/* Reset & Base - Enhanced for modern browsers */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Loading state for body */
body.loading { overflow: auto; }

body.loading::after { content: none; display: none; }

/* Centered spinner during initial load */
body.loading::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(59, 130, 246, 0.15);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: spin 1s linear infinite;
    z-index: 10000;
}

body.loaded::after { opacity: 0; pointer-events: none; }

/* Enhanced focus styles */
:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: 4px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* High contrast focus for accessibility */
@media (prefers-contrast: high) {
    :focus {
        outline: 3px solid #000;
        outline-offset: 3px;
    }
    
    body.dark-mode :focus {
        outline: 3px solid #fff;
        outline-offset: 3px;
    }
}

/* Selection styles */
::selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:root {
    /* Lightened & Harmonized Color System */
    --primary-blue: #60A5FA;
    --primary-blue-dark: #3B82F6;
    --primary-blue-light: #93C5FD;
    --primary-blue-ultralight: #EFF6FF;
    --secondary-blue: #6366F1;
    --accent-teal: #22D3EE;
    --accent-teal-light: #67E8F9;
    --accent-emerald: #34D399;
    --accent-emerald-light: #6EE7B7;
    --accent-amber: #FBBF24;
    --accent-amber-light: #FCD34D;
    --accent-rose: #FB7185;
    --accent-violet: #A78BFA;
    --accent-violet-light: #C4B5FD;
    
    /* Lightened Premium Gradients */
    --gradient-primary: linear-gradient(135deg, #93C5FD 0%, #60A5FA 50%, #3B82F6 100%);
    --gradient-secondary: linear-gradient(135deg, #67E8F9 0%, #60A5FA 50%, #A78BFA 100%);
    --gradient-accent: linear-gradient(135deg, #6EE7B7 0%, #22D3EE 50%, #60A5FA 100%);
    --gradient-warm: linear-gradient(135deg, #FCD34D 0%, #FBBF24 50%, #F59E0B 100%);
    --gradient-hero: linear-gradient(135deg, #3B82F6 0%, #60A5FA 25%, #93C5FD 75%, #DBEAFE 100%);
    --gradient-card: linear-gradient(135deg, rgba(96, 165, 250, 0.08) 0%, rgba(147, 197, 253, 0.12) 100%);
    
    /* Lightened background variables */
    --bg-primary: var(--gradient-hero);
    --bg-secondary: rgba(255, 255, 255, 0.95);
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.92);
    --bg-glass: rgba(255, 255, 255, 0.25);
    --bg-glass-hover: rgba(255, 255, 255, 0.35);
    --bg-glass-strong: rgba(255, 255, 255, 0.9);
    --bg-modal: rgba(255, 255, 255, 0.95);
    
    --text-primary: #0F172A;
    --text-secondary: #1E293B;
    --text-muted: #475569;
    --text-light: #64748B;
    --text-accent: var(--primary-blue);
    --text-white: rgba(255, 255, 255, 0.95);
    --text-hero: rgba(255, 255, 255, 0.98);
    
    --border-color: rgba(148, 163, 184, 0.2);
    --border-glass: rgba(255, 255, 255, 0.3);
    --border-accent: rgba(96, 165, 250, 0.3);
    --shadow: 0 8px 25px rgba(96, 165, 250, 0.08), 0 3px 12px rgba(96, 165, 250, 0.04);
    --shadow-hover: 0 15px 45px rgba(96, 165, 250, 0.12), 0 6px 20px rgba(96, 165, 250, 0.08);
    --shadow-glass: 0 6px 25px rgba(96, 165, 250, 0.12);
    --shadow-card: 0 3px 15px rgba(96, 165, 250, 0.08);
    --shadow-modal: 0 20px 60px rgba(96, 165, 250, 0.15);
    
    /* Enhanced Spacing System */
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 50px;
    
    /* Reduced Transitions */
    --transition-fast: all 0.1s ease-out;
    --transition: all 0.15s ease-out;
    --transition-slow: all 0.2s ease-out;
    --transition-bounce: all 0.2s ease-out;
    --transition-smooth: all 0.2s ease-out;
    
    /* Typography Scale */
    /* Enhanced typography scale for better readability */
    --font-size-xs: 0.85rem;
    --font-size-sm: 0.95rem;
    --font-size-base: 1.1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.4rem;
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2.1rem;
    --font-size-4xl: 2.5rem;
    
    /* Desktop typography enhancements */
    --font-size-desktop-xs: 0.9rem;
    --font-size-desktop-sm: 1rem;
    --font-size-desktop-base: 1.2rem;
    --font-size-desktop-lg: 1.4rem;
    --font-size-desktop-xl: 1.6rem;
    --font-size-desktop-2xl: 2rem;
    --font-size-desktop-3xl: 2.4rem;
    --font-size-desktop-4xl: 2.8rem;
    
    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Z-index layers */
    --z-base: 0;
    --z-dropdown: 50;
    --z-sticky: 100;
    --z-header: 200;
    --z-overlay: 500;
    --z-modal: 1000;
    --z-tooltip: 1100;
    --z-toast: 1200;
}

/* Enhanced Dark Mode Variables */
body.dark-mode {
    /* Lightened Dark Mode Gradients */
    --gradient-primary: linear-gradient(135deg, #374151 0%, #4B5563 30%, #6B7280 70%, #9CA3AF 100%);
    --gradient-secondary: linear-gradient(135deg, #4B5563 0%, #6366F1 50%, #8B5CF6 100%);
    --gradient-hero: linear-gradient(135deg, #374151 0%, #4B5563 30%, #6366F1 70%, #8B5CF6 100%);
    
    --bg-primary: var(--gradient-hero);
    --bg-secondary: rgba(55, 65, 81, 0.85);
    --bg-card: rgba(75, 85, 99, 0.7);
    --bg-card-hover: rgba(107, 114, 128, 0.85);
    --bg-glass: rgba(75, 85, 99, 0.5);
    --bg-glass-hover: rgba(107, 114, 128, 0.7);
    --bg-glass-strong: rgba(75, 85, 99, 0.9);
    --bg-modal: rgba(75, 85, 99, 0.95);
    
    --border-color: rgba(156, 163, 175, 0.3);
    --border-glass: rgba(209, 213, 219, 0.25);
    --border-accent: rgba(147, 197, 253, 0.4);
    
    --text-primary: #F9FAFB;
    --text-secondary: #E5E7EB;
    --text-muted: #9CA3AF;
    --text-light: #D1D5DB;
    --text-accent: var(--primary-blue-light);
    --text-white: rgba(249, 250, 251, 0.98);
    --text-hero: rgba(249, 250, 251, 0.95);
    
    /* Enhanced dark shadows with colored glows */
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(37, 99, 235, 0.1);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.5), 0 8px 32px rgba(37, 99, 235, 0.2);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    --shadow-card: 0 4px 20px rgba(37, 99, 235, 0.15);
    --shadow-modal: 0 25px 80px rgba(0, 0, 0, 0.6);
}

/* Dark mode table enhancements */
body.dark-mode .table-wrapper {
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 
                0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-mode .data-table thead {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.2) 0%, 
        rgba(147, 51, 234, 0.2) 50%,
        rgba(16, 185, 129, 0.2) 100%);
}

body.dark-mode .data-table tbody tr:hover {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.12) 0%, 
        rgba(147, 51, 234, 0.12) 50%,
        rgba(16, 185, 129, 0.12) 100%);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4),
                0 4px 12px rgba(59, 130, 246, 0.2);
}

body.dark-mode .action-btn {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4), 
                0 2px 6px rgba(59, 130, 246, 0.3);
}

body.dark-mode .action-btn:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 
                0 4px 12px rgba(59, 130, 246, 0.4);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    height: 100%;
    font-size: 16px;
}

/* Enhanced desktop typography */
@media (min-width: 1200px) {
    html {
        font-size: 18px;
    }
    
    :root {
        --font-size-xs: var(--font-size-desktop-xs);
        --font-size-sm: var(--font-size-desktop-sm);
        --font-size-base: var(--font-size-desktop-base);
        --font-size-lg: var(--font-size-desktop-lg);
        --font-size-xl: var(--font-size-desktop-xl);
        --font-size-2xl: var(--font-size-desktop-2xl);
        --font-size-3xl: var(--font-size-desktop-3xl);
        --font-size-4xl: var(--font-size-desktop-4xl);
    }
}

@media (min-width: 1920px) {
    html {
        font-size: 20px;
    }
    
    /* Ultra-wide screen optimizations */
    .hero h2 {
        font-size: 3.5rem;
        line-height: 1.1;
    }
    
    .hero p {
        font-size: var(--font-size-xl);
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    background-attachment: fixed;
    background-size: 100% 100%;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
    -moz-osx-font-smoothing: grayscale;
    
    /* Performance optimizations */
    will-change: scroll-position;
    transform: translateZ(0);
    contain: layout style;
    
    /* Enhanced typography */
    font-feature-settings: 'liga' 1, 'kern' 1, 'calt' 1, 'ss01' 1;
    font-variant-ligatures: common-ligatures;
    text-rendering: optimizeLegibility;
    font-optical-sizing: auto;
    
    /* Premium transitions for theme switching */
    transition: background 0.5s var(--transition-smooth), color 0.3s var(--transition);
    
    /* Subtle grain texture overlay for premium feel */
    position: relative;
}

/* Subtle noise texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.015;
    z-index: -1;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 25% 75%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    animation: subtle-float 20s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes subtle-float {
    0% { 
        transform: translate(0, 0) scale(1); 
        opacity: 0.015; 
    }
    100% { 
        transform: translate(-10px, -5px) scale(1.05); 
        opacity: 0.025; 
    }
}

/* Premium Animation System */
@keyframes premium-entrance {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
        filter: blur(4px);
    }
    60% {
        opacity: 0.8;
        transform: translateY(-5px) scale(1.02);
        filter: blur(0px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0px);
    }
}

@keyframes premium-glow {
    0%, 100% { 
        box-shadow: var(--shadow-glass), 0 0 20px rgba(59, 130, 246, 0.1); 
    }
    50% { 
        box-shadow: var(--shadow-glass), 0 0 40px rgba(59, 130, 246, 0.3); 
    }
}

@keyframes shimmer-slide {
    0% { 
        transform: translateX(-100%) skewX(-15deg); 
        opacity: 0; 
    }
    50% { 
        opacity: 1; 
    }
    100% { 
        transform: translateX(200%) skewX(-15deg); 
        opacity: 0; 
    }
}

@keyframes floating-subtle {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg); 
    }
    50% { 
        transform: translateY(-3px) rotate(1deg); 
    }
}

@keyframes scale-bounce {
    0% { 
        transform: scale(1); 
    }
    30% { 
        transform: scale(1.05); 
    }
    100% { 
        transform: scale(1); 
    }
}

/* Staggered Animation Classes */
.animate-in {
    animation: premium-entrance 0.8s var(--transition-smooth) forwards;
}

.animate-in.delay-1 { animation-delay: 0.1s; }
.animate-in.delay-2 { animation-delay: 0.2s; }
.animate-in.delay-3 { animation-delay: 0.3s; }
.animate-in.delay-4 { animation-delay: 0.4s; }
.animate-in.delay-5 { animation-delay: 0.5s; }

.floating {
    animation: floating-subtle 6s ease-in-out infinite;
}

.premium-glow {
    animation: premium-glow 3s ease-in-out infinite;
}

.scale-on-hover {
    transition: var(--transition-smooth);
}

.scale-on-hover:hover {
    transform: scale(1.02);
}

/* Dark mode is now defined above */

/* Améliorations spécifiques des cartes en mode sombre */
body.dark-mode .water-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 
                0 4px 12px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
}

body.dark-mode .water-card::before {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.05) 0%, 
        rgba(147, 51, 234, 0.05) 50%,
        rgba(16, 185, 129, 0.05) 100%);
}

body.dark-mode .water-card:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 
                0 8px 24px rgba(59, 130, 246, 0.2);
    transform: translateY(-8px) scale(1.02);
}

body.dark-mode .water-card:hover::before {
    opacity: 1;
}

/* Amélioration des badges en mode sombre */
body.dark-mode .score-badge {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6), 
                0 2px 6px rgba(59, 130, 246, 0.3);
    font-weight: 800;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.9) 0%, 
        rgba(30, 64, 175, 0.9) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

body.dark-mode .water-card:hover .score-badge {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.7), 
                0 3px 10px rgba(59, 130, 246, 0.5);
    transform: scale(1.1) translateZ(0);
}

body.dark-mode .water-badge {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

body.dark-mode .water-badge.gazeuse {
    background: linear-gradient(135deg, 
        rgba(245, 158, 11, 0.9) 0%, 
        rgba(217, 119, 6, 0.9) 100%);
}

body.dark-mode .water-badge.source {
    background: linear-gradient(135deg, 
        rgba(16, 185, 129, 0.9) 0%, 
        rgba(5, 150, 105, 0.9) 100%);
}

/* Amélioration des textes des cartes en mode sombre */
body.dark-mode .water-origin {
    border-top-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.85);
}

body.dark-mode .water-card:hover .water-origin {
    border-top-color: rgba(59, 130, 246, 0.4);
    color: rgba(255, 255, 255, 0.95);
}

body.dark-mode .water-info {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode .water-card:hover .water-info {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.2);
}

body.dark-mode .info-value {
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.1);
}

body.dark-mode .water-card:hover .info-value {
    text-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
    color: rgba(255, 255, 255, 0.95);
}

/* Prevent layout shifts */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
    overflow-x: hidden;
}

/* Enhanced Header */
.header {
    background: var(--bg-glass);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--border-glass);
    padding: var(--space-3) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    will-change: transform;
    transition: var(--transition-smooth);
    
    /* Glass morphism enhancement */
    box-shadow: var(--shadow-glass), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    
    /* Subtle animation on scroll */
    transform: translateZ(0);
}

/* Header scrolled state for improved contrast */
.header.scrolled {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

body.dark-mode .header.scrolled {
    background: rgba(17, 24, 39, 0.6);
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        rgba(59, 130, 246, 0.05) 0%, 
        rgba(139, 92, 246, 0.05) 50%, 
        rgba(16, 185, 129, 0.05) 100%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.header:hover::before {
    opacity: 1;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.75rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

/* Center logo horizontally within header while keeping actions aligned */
.header-content .logo {
    margin-left: auto;
    margin-right: auto;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    user-select: none;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    
    /* Premium text styling */
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    
    /* Subtle text shadow for depth */
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.1));
    
    /* Letter spacing for premium feel */
    letter-spacing: -0.025em;
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.2));
}

/* Right-side header actions pinned to the edge while keeping logo centered */
.header-actions-right {
    position: absolute;
    right: 1.75rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Compact, consistent style for motion toggle */
.motion-toggle {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    padding: var(--space-2);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-bounce);
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 40px;
}

.dark-mode-toggle {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    padding: var(--space-2);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-bounce);
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 40px;
    user-select: none;
    position: relative;
    overflow: hidden;
    
    /* Glass morphism styling */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-glass);
}

.dark-mode-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.4) 50%, 
        transparent 100%);
    transition: var(--transition-smooth);
}

.dark-mode-toggle:hover::before {
    left: 100%;
}

.dark-mode-toggle:hover {
    background: var(--bg-glass-hover);
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-hover), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border-color: var(--primary-blue-light);
}

.dark-mode-toggle:active {
    transform: scale(0.95) rotate(0deg);
    transition: var(--transition-fast);
}

.dark-mode-toggle:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Enhanced Navigation */
.main-nav {
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-glass);
    padding: var(--space-3) 0;
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: calc(var(--z-header) - 1);
    
    /* Glass morphism enhancement */
    box-shadow: var(--shadow-glass);
    transition: var(--transition-smooth);
    
    /* Subtle background pattern */
    position: relative;
}

.main-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(59, 130, 246, 0.02) 25%,
        rgba(139, 92, 246, 0.02) 50%,
        rgba(16, 185, 129, 0.02) 75%,
        transparent 100%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.main-nav:hover::before {
    opacity: 1;
}

.nav-btn {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-6);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    min-height: 48px;
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
    
    /* Glass morphism styling */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow);
    
    /* Premium text styling */
    letter-spacing: -0.01em;
}

/* Shimmer effect for nav buttons */
.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 100%);
    transition: var(--transition-slow);
    z-index: 1;
}

.nav-btn:hover::before {
    left: 100%;
}

.nav-btn:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-blue-light);
    
    /* Glow effect */
    filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.3));
}

.nav-btn:active {
    transform: translateY(-1px) scale(1.01);
    transition: var(--transition-fast);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-hover), 0 0 0 1px rgba(59, 130, 246, 0.5);
    transform: translateY(-2px);
    position: relative;
    z-index: 2;
    
    /* Active state glow */
    filter: drop-shadow(0 0 12px rgba(59, 130, 246, 0.4));
}

.nav-btn.active::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--primary-blue-light), var(--accent-purple));
    border-radius: calc(var(--radius-lg) + 2px);
    z-index: -1;
    opacity: 0.5;
    filter: blur(8px);
    animation: pulse-glow 2s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
    0% { opacity: 0.3; transform: scale(1); }
    100% { opacity: 0.6; transform: scale(1.05); }
}

.nav-btn.active:hover {
    transform: translateY(-3px) scale(1.03);
}

.nav-btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.nav-icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    transition: var(--transition);
    position: relative;
    z-index: 2;
}

.nav-btn:hover .nav-icon {
    transform: scale(1.1) rotate(5deg);
}

.nav-btn.active .nav-icon {
    animation: icon-bounce 0.6s ease-out;
}

@keyframes icon-bounce {
    0%, 100% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.2) rotate(-5deg); }
    75% { transform: scale(1.1) rotate(5deg); }
}

.nav-text {
    flex-shrink: 0;
    position: relative;
    z-index: 2;
    font-weight: var(--font-weight-medium);
    transition: var(--transition);
}

.nav-btn:hover .nav-text {
    font-weight: var(--font-weight-semibold);
}

/* Enhanced Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-8);
    width: 100%;
    max-width: min(1200px, 100%);
    box-sizing: border-box;
    position: relative;
    min-height: calc(100vh - 200px);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    
    /* Subtle content enhancement */
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.01) 50%,
        transparent 100%);
    border-radius: var(--radius-xl);
    
    /* Performance optimization */
    will-change: scroll-position;
    contain: layout style;
}

/* Views */
.view {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.view.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* Premium Hero Section */
.hero {
    text-align: center;
    margin-bottom: var(--space-8);
    padding: var(--space-12) var(--space-4) var(--space-8);
    position: relative;
    
    /* Subtle background enhancement */
    background: radial-gradient(circle at center top, 
        rgba(59, 130, 246, 0.03) 0%, 
        transparent 70%);
    border-radius: var(--radius-2xl);
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: var(--text-hero);
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-align: center;
    
    /* Simplified shadow for better performance */
    text-shadow: 0 2px 8px rgba(96, 165, 250, 0.3),
                 0 1px 4px rgba(96, 165, 250, 0.2);
    
    /* Subtle gradient overlay */
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.98) 0%, 
        rgba(239, 246, 255, 0.95) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    
    /* Reduced animation */
    animation: hero-glow 6s ease-in-out infinite alternate;
}

@media (min-width: 768px) {
    .hero h2 {
        font-size: 4rem;
    }
}

@media (min-width: 1200px) {
    .hero h2 {
        font-size: 4.5rem;
        margin-bottom: 2.5rem;
    }
}


@keyframes hero-glow {
    0% { 
        text-shadow: 0 2px 8px rgba(96, 165, 250, 0.3),
                     0 1px 4px rgba(96, 165, 250, 0.2);
    }
    100% { 
        text-shadow: 0 3px 12px rgba(96, 165, 250, 0.4),
                     0 2px 6px rgba(34, 211, 238, 0.3);
    }
}

.hero p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    text-align: center;
    
    /* Enhanced readability for desktop */
    font-weight: 600;
    letter-spacing: 0.01em;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.8),
                 0 1px 4px rgba(0, 0, 0, 0.9);
    opacity: 1;
}

@media (min-width: 1200px) {
    .hero p {
        font-size: 1.6rem;
        max-width: 1000px;
        line-height: 1.7;
    }
}

/* Premium Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-10);
    
    /* Subtle entrance animation */
    animation: stats-fade-in 0.8s ease-out 0.2s both;
}

@keyframes stats-fade-in {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-card {
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(96, 165, 250, 0.3);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    transition: var(--transition-smooth);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    
    /* Enhanced glass styling with harmonized colors */
    box-shadow: var(--shadow-card),
                inset 0 1px 0 rgba(255, 255, 255, 0.15);
    
    /* Subtle animation on hover */
    cursor: pointer;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.05) 0%, 
        rgba(139, 92, 246, 0.05) 50%,
        rgba(16, 185, 129, 0.05) 100%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    background: var(--bg-glass-hover);
    border-color: var(--primary-blue-light);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-blue-dark);
    display: block;
    line-height: 1;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
    text-align: center;
    
    /* Enhanced readability with shadow */
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.6),
                 0 1px 4px rgba(59, 130, 246, 0.4);
    
    /* Premium number styling */
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    
    /* Subtle animation */
    transition: all 0.3s ease;
}

@media (min-width: 1200px) {
    .stat-number {
        font-size: 3.5rem;
    }
}

.stat-card:hover .stat-number {
    transform: scale(1.05);
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.3));
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-weight: 500;
    font-weight: 600;
    letter-spacing: 0.02em;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
    line-height: 1.5;
    text-align: center;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6),
                 0 1px 3px rgba(0, 0, 0, 0.8);
}

@media (min-width: 1200px) {
    .stat-label {
        font-size: 1.1rem;
    }
}

.stat-card:hover .stat-label {
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    font-weight: 500;
}

/* Categories */
.categories h3 {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.01em;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 900px) {
  .category-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 600px) {
  .category-grid {
    gap: 1rem;
  }
}

.category-card {
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);

.category-card:hover {
    background: rgba(255, 255, 255, 1);
    border-color: var(--primary-blue-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(96, 165, 250, 0.15);
}

.category-card:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    line-height: 1;
}

.category-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* View Header */
.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    background: var(--bg-glass);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: var(--shadow-glass);
    padding: var(--space-6);
}

/* Desktop view header optimizations */
@media (min-width: 1200px) {
    .view-header {
        padding: var(--space-8);
        margin-bottom: var(--space-10);
        border-radius: var(--radius-xl);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-6);
    }
    
    .header-main {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        flex-wrap: wrap;
        gap: var(--space-4);
    }
    
    .header-actions {
        display: flex;
        align-items: center;
        gap: var(--space-4);
    }
}

.view-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.search-filter {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.search-input,
.filter-select,
.compare-select {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.875rem 1.25rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    min-width: 220px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    font-weight: 500;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    
    /* Enhanced styling */
    background-image: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.02) 0%, 
        rgba(255, 255, 255, 0.05) 100%);
    
    position: relative;
}

.search-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
    font-style: italic;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus,
.filter-select:focus,
.compare-select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15), 
                0 4px 12px rgba(59, 130, 246, 0.1);
    background: var(--bg-card-hover);
    transform: translateY(-1px) scale(1.02);
    
    /* Enhanced focus state */
    background-image: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.02) 0%, 
        rgba(147, 51, 234, 0.02) 100%);
}

/* Waters Grid - Design avancé */
.waters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
    padding: 1rem 0;
    animation: gridFadeIn 0.6s ease-out;
}

@keyframes gridFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.waters-grid.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Premium Water Card Design */
.water-card {
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(16px) saturate(130%);
    -webkit-backdrop-filter: blur(16px) saturate(130%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    display: block;
    margin-bottom: 1rem;
    will-change: transform, box-shadow;
    box-shadow: var(--shadow-glass);
    
    /* Gradient border effect */
    background-clip: padding-box;
    
    /* Initial state with subtle depth */
    transform: translateY(0) scale(1) translateZ(0);
    
    /* Performance optimizations */
    contain: layout style paint;
    
    /* Premium glass texture */
    isolation: isolate;
}

/* Subtle reflective highlight */
.water-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 100%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.water-card:hover::after {
    opacity: 1;
}

.water-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.03) 0%, 
        rgba(147, 51, 234, 0.03) 50%,
        rgba(16, 185, 129, 0.03) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 0;
}

.water-card > * {
    position: relative;
    z-index: 1;
}

.water-card:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-4px) scale(1.01) translateZ(0);
    box-shadow: 0 8px 24px rgba(96, 165, 250, 0.2);
    border-color: var(--primary-blue-light);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
}

/* Reduce heavy effects while sidebar is open to prevent GPU glitches */
body.sidebar-open .water-card,
body.sidebar-open .water-card:hover {
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  transform: translateY(0) scale(1) !important;
  box-shadow: var(--shadow-glass);
}

.water-card:hover::before {
    opacity: 1;
}

.water-card:hover .water-name {
    color: var(--primary-blue);
    transform: translateX(4px);
}

.water-card:hover .score-badge {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.water-card:hover .info-value {
    color: var(--text-primary);
    font-weight: 700;
}

.water-card:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.water-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 1rem;
}

.water-name {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
    line-height: 1.2;
    transition: all 0.3s ease;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.water-type {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.water-score {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.score-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.water-badge {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
    flex-shrink: 0;
    transition: var(--transition);
    
    /* Glass effect */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.1);
    
    /* Text enhancement */
    letter-spacing: 0.025em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.water-card:hover .water-badge {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.water-badge.gazeuse {
    background: var(--gradient-warm);
}

.water-badge.source {
    background: var(--gradient-accent);
}

/* Premium Score Badges */
.score-badge {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-extrabold);
    text-align: center;
    white-space: nowrap;
    flex-shrink: 0;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.1);
    letter-spacing: -0.01em;
    
    /* Glass morphism effect */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    
    /* Shine effect */
    position: relative;
    overflow: hidden;
    
    /* Premium text styling */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    font-variant-numeric: tabular-nums;
}

.score-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.water-card:hover .score-badge::before {
    left: 100%;
}

.score-badge.score-excellent {
    background: var(--gradient-accent);
    box-shadow: var(--shadow), 0 0 20px rgba(16, 185, 129, 0.3);
}

.score-badge.score-good {
    background: var(--gradient-secondary);
    box-shadow: var(--shadow), 0 0 20px rgba(59, 130, 246, 0.3);
}

.score-badge.score-average {
    background: var(--gradient-warm);
    box-shadow: var(--shadow), 0 0 20px rgba(245, 158, 11, 0.3);
}

.score-badge.score-poor {
    background: linear-gradient(135deg, var(--accent-red) 0%, #DC2626 100%);
    box-shadow: var(--shadow), 0 0 20px rgba(239, 68, 68, 0.3);
}

.water-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
    padding: var(--space-5);
    background: var(--bg-glass);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
    
    /* Glass morphism enhancement */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.water-card:hover .water-info {
    background: var(--bg-glass-hover);
    border-color: var(--primary-blue-light);
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
    margin-bottom: var(--space-1);
    
    /* Subtle background */
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.05) 0%, 
        rgba(139, 92, 246, 0.05) 100%);
    padding: var(--space-1);
    border-radius: var(--radius-xs);
    text-align: center;
    border: 1px solid var(--border-glass);
}

.water-card:hover .info-label {
    color: var(--text-secondary);
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1) 0%, 
        rgba(139, 92, 246, 0.1) 100%);
}

.info-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.3;
    transition: var(--transition);
    text-align: center;
    
    /* Premium number styling */
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
    
    /* Subtle emphasis */
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    
    /* Text enhancement */
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    font-variant-numeric: tabular-nums;
    
    /* Glow effect for numbers */
    text-shadow: 0 0 10px rgba(59, 130, 246, 0);
}

.water-card:hover .info-value {
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.15);
}

.water-origin {
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.95rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    line-height: 1.4;
    transition: all 0.3s ease;
    font-weight: 500;
}

.water-card:hover .water-origin {
    color: var(--text-primary);
    border-top-color: rgba(59, 130, 246, 0.3);
    padding-left: 0.5rem;
}

/* Compare */
.compare-container {
    max-width: 800px;
    margin: 0 auto;
}

.compare-selectors {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.selector-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.selector-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.compare-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.compare-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.compare-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.compare-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    gap: 1rem;
}

.compare-detail:last-child {
    border-bottom: none;
}

.compare-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    flex-shrink: 0;
}

.compare-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
}

/* Simple and Functional Modal Design */
.modal {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.45);
    display: none;
    align-items: stretch; /* drawer style */
    justify-content: flex-end; /* drawer right */
    z-index: 1000;
    padding: 0;
}

/* Suppression des ::before qui causent des problèmes */

.modal.active {
    display: flex;
}

@keyframes modal-backdrop-in {
    0% {
        opacity: 0;
        backdrop-filter: blur(0px);
        -webkit-backdrop-filter: blur(0px);
    }
    100% {
        opacity: 1;
        backdrop-filter: blur(24px) saturate(150%);
        -webkit-backdrop-filter: blur(24px) saturate(150%);
    }
}

.modal-content {
    background: var(--bg-card) !important;
    border-radius: 0;
    max-width: 560px;
    width: 100%;
    height: 100%;
    max-height: 100vh;
    overflow-y: auto;
    position: relative;
    box-shadow: -8px 0 20px rgba(0,0,0,0.12);
    border-left: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    animation: drawer-in 220ms ease-out both;
    display: flex;
    flex-direction: column;
}

@keyframes drawer-in { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

@media (max-width: 640px) {
  .modal { align-items: flex-end; justify-content: center; }
  .modal-content { max-width: none; width: 100%; height: auto; max-height: 85vh; border-radius: 16px 16px 0 0; border-left: none; animation: sheet-up 220ms ease-out both; }
  @keyframes sheet-up { from { transform: translateY(16px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
}

/* Drawer side: left */
.modal.drawer-left { justify-content: flex-start; }
.modal.drawer-left .modal-content { border-left: none; border-right: 1px solid rgba(255,255,255,0.2); box-shadow: 8px 0 20px rgba(0,0,0,0.12); }

/* Drawer resizer */
.drawer-resizer {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  cursor: col-resize;
  background: transparent;
}
.modal.drawer-left .drawer-resizer { left: auto; right: 0; }
@media (max-width: 640px) {
  .drawer-resizer { display: none; }
}

.modal-actions { display: flex; gap: 6px; align-items: center; }
.drawer-side-toggle { border: none; background: transparent; font-size: 1rem; cursor: pointer; color: var(--text-secondary); padding: 0.25rem 0.5rem; border-radius: 6px; }
.drawer-side-toggle:hover { background: rgba(0,0,0,0.06); color: var(--text-primary); }

/* Plus de ::before problématiques */

/* Styles simples pour la modale */
.modal-body {
    padding: 20px;
    color: #333;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #666;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.modal-close:hover {
    background: #f0f0f0;
    color: #333;
}

@keyframes modal-content-in {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(40px) rotateX(10deg);
        filter: blur(4px);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.02) translateY(-5px) rotateX(0deg);
        filter: blur(0px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0) rotateX(0deg);
        filter: blur(0px);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-card) !important;
}

.modal-title-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    min-width: 0;
}

.modal-title-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    min-height: 2.5rem;
}

.modal-water-name {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
    flex: 1;
    min-width: 0;
    
    /* Premium gradient text */
    background: linear-gradient(135deg, 
        var(--text-primary) 0%, 
        var(--primary-blue) 60%, 
        var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 100%;
    
    /* Désactiver l'animation de gradient par défaut (trop imposante) */
    animation: none;
    
    /* Enhanced typography */
    letter-spacing: -0.02em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@keyframes gradient-slide {
    0% { background-position: 0% 0%; }
    100% { background-position: 100% 0%; }
}

.modal-badges {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}

.modal-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.4;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    padding: 0.25rem;
    border-radius: 4px;
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.modal-close:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.modal-body {
    padding: 1.5rem;
}

.modal-section {
    margin-bottom: 1.5rem;
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    gap: 1rem;
}

.modal-detail:last-child {
    border-bottom: none;
}

.modal-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    flex-shrink: 0;
}

.modal-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
    word-break: break-word;
}

/* Score Display in Modal */
.score-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.score-badge-large {
    background: var(--primary-blue);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 1.2rem;
    font-weight: 800;
    text-align: center;
    min-width: 80px;
    flex-shrink: 0;
}

.score-badge-large.score-excellent {
    background: var(--accent-green);
}

.score-badge-large.score-good {
    background: var(--primary-blue);
}

.score-badge-large.score-average {
    background: var(--accent-orange);
}

.score-badge-large.score-poor {
    background: var(--accent-red);
}

.score-breakdown p {
    margin: 0.25rem 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    grid-column: 1 / -1;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--border-color);
    margin: 2rem 0;
    transition: all 0.3s ease;
    
    /* Enhanced styling */
    background-image: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.02) 0%, 
        rgba(147, 51, 234, 0.02) 100%);
}

.empty-state:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    
    /* Text gradient */
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.empty-state p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1.05rem;
    font-weight: 500;
    max-width: 400px;
    margin: 0 auto;
}

/* Tap Water Styles */
.tap-water-info {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.tap-hero {
    margin-bottom: 3rem;
}

.tap-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    text-align: center;
}

.tap-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tap-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.tap-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.tap-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.tap-stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    align-items: center;
}

.tap-stat .stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    line-height: 1;
}

.tap-stat .stat-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.tap-comparison h3,
.tap-quality h3,
.tap-tips h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: flex;
    text-align: center;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

/* Add spacing to tap water sections */
.tap-comparison,
.tap-quality, 
.tap-tips {
    margin-bottom: 4rem;
    margin-top: 2rem;
}

/* France Map Interactive Styles */
.france-map {
    position: relative;
    margin-bottom: 1rem;
    margin-top: 0;
    display: flex;
    justify-content: center;
}

.france-map svg {
    width: 100%;
    max-width: 600px;
    height: auto;
    aspect-ratio: 1;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.05) 0%, 
        rgba(147, 51, 234, 0.05) 100%);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    padding: 1rem;
}

.region {
    stroke: var(--border-color);
    stroke-width: 2;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.8;
}

.region:hover {
    opacity: 1;
    stroke-width: 3;
    filter: brightness(1.1);
}

.region.excellent {
    fill: var(--accent-green);
}

.region.good {
    fill: var(--primary-blue);
}

.region.average {
    fill: var(--accent-orange);
}

.region.poor {
    fill: var(--accent-red);
}

.region-tooltip {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: var(--shadow-hover);
    backdrop-filter: blur(20px);
    max-width: 250px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 1000;
    visibility: hidden;
}

.region-tooltip.visible {
    opacity: 1;
    visibility: visible;
}

.quality-badge.quality-excellent {
    background: var(--accent-green);
    color: white;
}

.quality-badge.quality-good {
    background: var(--primary-blue);
    color: white;
}

.quality-badge.quality-average {
    background: var(--accent-orange);
    color: white;
}

.quality-badge.quality-poor {
    background: var(--accent-red);
    color: white;
}

.tooltip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.quality-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.quality-badge.excellent {
    background: var(--accent-green);
    color: white;
}

.quality-badge.good {
    background: var(--primary-blue);
    color: white;
}

.quality-badge.average {
    background: var(--accent-orange);
    color: white;
}

.quality-badge.poor {
    background: var(--accent-red);
    color: white;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.comparison-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.comparison-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comparison-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    gap: 1rem;
}

.comparison-detail:last-child {
    border-bottom: none;
    margin-bottom: 1rem;
}

.comparison-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    flex-shrink: 0;
}

.comparison-value {
    font-size: 0.95rem;
    font-weight: 600;
    text-align: right;
}

.comparison-value.good {
    color: var(--accent-green);
}

.comparison-value.average {
    color: var(--accent-orange);
}

.comparison-value.poor {
    color: var(--accent-red);
}

.comparison-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin: 0;
    line-height: 1.4;
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 3rem;
}

.quality-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    gap: 1rem;
}

.quality-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    flex-shrink: 0;
}

.quality-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tip-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    text-align: center;
    transition: var(--transition);
}

.tip-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.tip-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
    line-height: 1;
}

.tip-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.tip-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Loading States - Enhanced */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    color: var(--text-secondary);
    flex-direction: column;
    gap: 1rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(59, 130, 246, 0.1);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite, pulseGlow 2s ease-in-out infinite;
}

.loading-text {
    font-weight: 600;
    letter-spacing: 0.05em;
    animation: shimmer 1.5s infinite;
    background: linear-gradient(90deg, 
        var(--text-secondary) 0%, 
        var(--primary-blue) 50%, 
        var(--text-secondary) 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
}

/* Animation pour les éléments qui apparaissent */
.fade-in { animation: fadeInUp 0.24s ease-out forwards; opacity: 0; transform: translateY(10px); }

.fade-in.delay-1 { animation-delay: 0.1s; }
.fade-in.delay-2 { animation-delay: 0.2s; }
.fade-in.delay-3 { animation-delay: 0.3s; }
.fade-in.delay-4 { animation-delay: 0.4s; }
.fade-in.delay-5 { animation-delay: 0.5s; }

/* Subtle floating animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-2px); }
}

.floating { animation: float 10s ease-in-out infinite; }

/* Success animation */
@keyframes successPulse { 0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16,185,129,0.5);} 70% { transform: scale(1.03); box-shadow: 0 0 0 6px rgba(16,185,129,0);} 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16,185,129,0);} }

.success-animation { animation: successPulse 0.35s ease-out; }

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Performance optimized animations */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Intersection Observer animations */
.reveal { opacity: 0; transform: translateY(16px); transition: all 0.24s ease-out; }

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations for grids */
.stagger-animation { opacity: 0; transform: translateY(12px); animation: fadeInUp 0.24s ease-out forwards; }

.stagger-animation:nth-child(1) { animation-delay: 0s; }
.stagger-animation:nth-child(2) { animation-delay: 0.1s; }
.stagger-animation:nth-child(3) { animation-delay: 0.2s; }
.stagger-animation:nth-child(4) { animation-delay: 0.3s; }
.stagger-animation:nth-child(5) { animation-delay: 0.4s; }
.stagger-animation:nth-child(6) { animation-delay: 0.5s; }

/* Mobile-first animations */
@media (max-width: 768px) {
    .water-card {
        animation: mobileSlideUp 0.5s ease-out forwards;
    }
    
    @keyframes mobileSlideUp {
        from {
            opacity: 0;
            transform: translateY(40px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .data-table tbody tr:hover {
        transform: scale(1.01);
        margin: 0;
    }
    
    /* Table mobile responsive */
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-color: rgba(59, 130, 246, 0.3) transparent;
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-glass);
    }
    
    .table-wrapper::-webkit-scrollbar {
        height: 8px;
    }
    
    .table-wrapper::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.05);
        border-radius: 4px;
    }
    
    .table-wrapper::-webkit-scrollbar-thumb {
        background: linear-gradient(90deg, rgba(59, 130, 246, 0.5), rgba(147, 51, 234, 0.5));
        border-radius: 4px;
    }
    
    .data-table {
        min-width: 900px;
    }
    
    .data-table th,
    .data-table td {
        font-size: 0.85rem;
        padding: 0.75rem 0.5rem;
        white-space: nowrap;
    }
    
    /* Mobile column width optimizations */
    .data-table th:nth-child(1), .data-table td:nth-child(1) { min-width: 120px; }
    .data-table th:nth-child(2), .data-table td:nth-child(2) { min-width: 140px; }
    .data-table th:nth-child(3), .data-table td:nth-child(3) { min-width: 70px; }
    .data-table th:nth-child(4), .data-table td:nth-child(4) { min-width: 60px; }
    .data-table th:nth-child(5), .data-table td:nth-child(5) { min-width: 90px; }
    .data-table th:nth-child(6), .data-table td:nth-child(6) { min-width: 90px; }
    .data-table th:nth-child(7), .data-table td:nth-child(7) { min-width: 70px; }
    .data-table th:nth-child(8), .data-table td:nth-child(8) { min-width: 150px; }
    .data-table th:nth-child(9), .data-table td:nth-child(9) { min-width: 80px; }

/* Desktop table optimizations */
@media (min-width: 1200px) {
    .table-wrapper {
        border-radius: var(--radius-xl);
        overflow: hidden;
        box-shadow: var(--shadow-glass);
    }
    
    .data-table {
        min-width: 100%;
        font-size: var(--font-size-sm);
    }
    
    .data-table th,
    .data-table td {
        font-size: var(--font-size-sm);
        padding: 1rem 1.25rem;
    }
    
    /* Enhanced desktop column widths */
    .data-table th:nth-child(1), .data-table td:nth-child(1) { width: 20%; }
    .data-table th:nth-child(2), .data-table td:nth-child(2) { width: 12%; }
    .data-table th:nth-child(3), .data-table td:nth-child(3) { width: 8%; }
    .data-table th:nth-child(4), .data-table td:nth-child(4) { width: 8%; }
    .data-table th:nth-child(5), .data-table td:nth-child(5) { width: 10%; }
    .data-table th:nth-child(6), .data-table td:nth-child(6) { width: 10%; }
    .data-table th:nth-child(7), .data-table td:nth-child(7) { width: 8%; }
    .data-table th:nth-child(8), .data-table td:nth-child(8) { width: 16%; }
    .data-table th:nth-child(9), .data-table td:nth-child(9) { width: 8%; }
    
    /* Enhanced hover effects for desktop */
    .data-table tbody tr:hover {
        transform: scale(1.005);
        background: linear-gradient(135deg,
            rgba(59, 130, 246, 0.05) 0%,
            rgba(147, 51, 234, 0.05) 50%,
            rgba(16, 185, 129, 0.05) 100%);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1),
                    0 4px 12px rgba(59, 130, 246, 0.1);
    }
    
    .data-table thead th {
        background: linear-gradient(135deg,
            rgba(59, 130, 246, 0.1) 0%,
            rgba(147, 51, 234, 0.08) 100%);
        font-weight: 600;
        letter-spacing: 0.025em;
        text-transform: uppercase;
        font-size: var(--font-size-xs);
    }
}
    
    /* Reduce animations on mobile for performance */
    .water-card:hover {
        transform: translateY(-4px) scale(1.01);
    }
}

/* Premium Responsive Design System */

/* Utility Classes for Enhanced UX */
.glass-advanced {
    background: var(--bg-glass);
    backdrop-filter: blur(32px) saturate(200%);
    -webkit-backdrop-filter: blur(32px) saturate(200%);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-glass), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.premium-glow-blue {
    box-shadow: var(--shadow), 0 0 30px rgba(59, 130, 246, 0.2);
}

.premium-glow-purple {
    box-shadow: var(--shadow), 0 0 30px rgba(139, 92, 246, 0.2);
}

.premium-glow-green {
    box-shadow: var(--shadow), 0 0 30px rgba(16, 185, 129, 0.2);
}

.text-gradient-primary {
    background: linear-gradient(135deg, 
        var(--text-primary) 0%, 
        var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-accent {
    background: linear-gradient(135deg, 
        var(--primary-blue) 0%, 
        var(--accent-purple) 50%,
        var(--accent-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Enhanced Accessibility & Focus States */
.focus-ring:focus,
.water-card:focus,
.nav-btn:focus,
.btn-premium:focus,
.stat-card:focus {
    outline: none;
    box-shadow: var(--shadow), 0 0 0 3px rgba(59, 130, 246, 0.4);
    border-color: var(--primary-blue-light);
    position: relative;
    z-index: 10;
}

/* Focus visible for keyboard navigation */
.focus-ring:focus-visible,
.water-card:focus-visible,
.nav-btn:focus-visible,
.btn-premium:focus-visible {
    outline: 2px solid var(--primary-blue-light);
    outline-offset: 2px;
    box-shadow: var(--shadow-hover), 0 0 0 4px rgba(59, 130, 246, 0.2);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #2D3748;
        --border-color: #4A5568;
        --border-glass: rgba(0, 0, 0, 0.3);
        --bg-glass: rgba(255, 255, 255, 0.95);
        --bg-glass-hover: rgba(255, 255, 255, 1);
    }
    
    body.dark-mode {
        --text-primary: #FFFFFF;
        --text-secondary: #E2E8F0;
        --border-color: #A0AEC0;
        --border-glass: rgba(255, 255, 255, 0.4);
        --bg-glass: rgba(0, 0, 0, 0.9);
        --bg-glass-hover: rgba(0, 0, 0, 1);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .floating,
    .premium-glow,
    .hero h2 {
        animation: none !important;
    }
    
    .water-card::before,
    .nav-btn::before,
    .btn-premium::before {
        transition: none !important;
    }
}

/* Color scheme preference support */
@media (prefers-color-scheme: dark) {
    body:not(.dark-mode):not([data-theme="light"]) {
        color-scheme: dark;
    }
}

@media (prefers-color-scheme: light) {
    body.dark-mode:not([data-theme="dark"]) {
        color-scheme: light;
    }
}

/* Premium Button System */
.btn-premium {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    
    /* Glass effect */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-premium:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.btn-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 100%);
    transition: var(--transition-slow);
}

.btn-premium:hover::before {
    left: 100%;
}

/* Enhanced Responsive Design */
@media (max-width: 768px) {
    :root {
        /* Enhanced mobile-optimized spacing */
        --space-4: 1.2rem;
        --space-6: 1.5rem;
        --space-8: 1.8rem;
        --space-10: 2.2rem;
        --space-12: 2.8rem;
        
        /* Enhanced mobile typography - larger sizes */
        --font-size-xs: 0.85rem;
        --font-size-sm: 0.95rem;
        --font-size-base: 1.05rem;
        --font-size-lg: 1.15rem;
        --font-size-xl: 1.3rem;
        --font-size-2xl: 1.5rem;
    }
    
    .main-content {
        padding: var(--space-4);
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
        animation: mobileContentSlide 0.4s ease-out forwards;
    }
    
    @keyframes mobileContentSlide {
        from {
            opacity: 0;
            transform: translateX(-20px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    
    .hero {
        padding: var(--space-10) var(--space-4) var(--space-8);
        margin-bottom: var(--space-6);
    }
    
    .hero h2 {
        font-size: clamp(2.2rem, 7vw, 3rem);
        margin-bottom: var(--space-4);
        line-height: 1.2;
    }
    
    .hero p {
        font-size: max(18px, 1.15rem);
        margin-bottom: var(--space-6);
        line-height: 1.6;
        padding: 1rem 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
        margin-bottom: var(--space-8);
    }
    
    .stat-card {
        padding: var(--space-6);
    }
    
    .category-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .view-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .search-filter {
        justify-content: stretch;
        flex-direction: column;
    }
    
    .search-input,
    .filter-select,
    .compare-select {
        min-width: unset;
        width: 100%;
    }
    
    .waters-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0.5rem 0;
    }
    
    .water-card {
        padding: var(--space-6);
        border-radius: var(--radius-lg);
        
        /* Mobile-optimized interactions */
        transform: translateZ(0);
        transition: var(--transition);
    }
    
    .water-card:hover,
    .water-card:active {
        transform: translateY(-4px) scale(1.01) translateZ(0);
        box-shadow: var(--shadow-hover);
    }
    
    .water-card:active {
        transform: scale(0.98) translateZ(0);
        transition: var(--transition-fast);
    }
    
    .compare-selectors,
    .compare-results {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .quality-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .main-nav {
        padding: 0.75rem;
        gap: 0.25rem;
    }
    
    .nav-btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-xs);
        min-height: 44px;
        border-radius: var(--radius);
        
        /* Enhanced mobile touch targets */
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(59, 130, 246, 0.2);
    }
    
    .nav-btn:active {
        transform: scale(0.95);
        transition: var(--transition-fast);
        font-size: 0.75rem;
        flex-direction: column;
        gap: 0.25rem;
        min-width: 60px;
    }
    
    .nav-text {
        font-size: 0.65rem;
        text-align: center;
        line-height: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 60px;
    }
    
    .water-info {
        grid-template-columns: 1fr;
        gap: 0.75rem;
        padding: 0.75rem;
    }
    
    .info-item {
        text-align: center;
        padding: 0.5rem;
        background: rgba(255, 255, 255, 0.05);
        border-radius: var(--radius);
        transition: all 0.3s ease;
    }
    
    .info-item:hover {
        background: rgba(255, 255, 255, 0.08);
        transform: scale(1.02);
    }
    
    .tap-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .tap-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }
    
    .score-display {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    /* legacy modal tweaks (disabled for drawer) */
    .modal-content-legacy {
        margin: 0.5rem;
        max-height: 90vh;
        border-radius: var(--radius);
    }
    
    .modal-header {
        padding: 1rem;
        position: relative;
    }
    
    .modal-badges {
        justify-content: center;
        margin-top: 0.5rem;
    }
    
    .modal-header,
    .modal-body {
        padding: 1rem;
    }
}

/* ===== ENHANCED UX IMPROVEMENTS ===== */

/* Enhanced Header with Filter Toggle */
.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    flex-wrap: wrap;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
    max-width: 100%;
    box-sizing: border-box;
}

.filters-toggle-btn {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--primary-blue);
    color: white;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 0 2px 8px rgba(96, 165, 250, 0.25);
}

.filters-toggle-btn:hover {
    background: var(--primary-blue-dark);
    border-color: var(--primary-blue-light);
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.35);
}

.filters-badge {
    background: var(--accent-orange);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    min-width: 20px;
    text-align: center;
    position: absolute;
    top: -8px;
    right: -8px;
    transition: all 0.3s ease;
}

.filters-badge:empty {
    display: none;
}

.quick-search {
    position: relative;
    flex: 1;
    max-width: 350px;
    min-width: 200px;
    box-sizing: border-box;
}

.search-input-quick {
    padding: 0.75rem 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.95rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.search-input-quick:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    transform: scale(1.02);
}

.search-input-quick::placeholder {
    color: var(--text-muted);
}

/* Active Filters Display */
.active-filters-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.active-filters-label {
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.active-filters-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    flex: 1;
}

.filter-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--primary-blue);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-tag-remove {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s ease;
}

.filter-tag-remove:hover {
    background: rgba(255, 255, 255, 0.3);
}

.clear-filters-btn {
    padding: 0.5rem 1rem;
    background: var(--accent-red);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.clear-filters-btn:hover {
    background: #dc2626;
    transform: scale(1.05);
}

/* Filters Sidebar */
.filters-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    max-width: min(400px, calc(100% - 40px));
    height: 100vh;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-color);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
    z-index: var(--z-modal);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overflow-x: hidden;
    box-sizing: border-box;
}

.filters-sidebar.active {
    right: min(0px, calc(100vw - 400px));
}

.filters-sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    z-index: 1;
}

.filters-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.close-sidebar-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-sidebar-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.filters-body {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.filter-section {
    margin-bottom: 2rem;
}

.filter-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

/* Enhanced Search */
.search-enhanced {
    position: relative;
}

.search-input-enhanced {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.search-input-enhanced:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
    outline: none;
}

.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    display: none;
    box-shadow: var(--shadow);
}

.search-suggestion {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border-color);
}

.search-suggestion:hover {
    background: var(--bg-card-hover);
}

.search-suggestion:last-child {
    border-bottom: none;
}

/* Filter Chips */
.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.filter-chip {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.filter-chip:hover {
    border-color: var(--primary-blue);
    background: rgba(96, 165, 250, 0.15);
    color: var(--primary-blue);
}

.filter-chip.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
    box-shadow: 0 2px 8px rgba(96, 165, 250, 0.25);
}

.chip-icon {
    font-size: 1rem;
}

.chip-text {
    font-weight: 500;
}

.chip-count {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Score Filter */
.score-filter {
    space-y: 1rem;
}

.score-range {
    margin-bottom: 1rem;
}

.score-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    appearance: none;
    margin: 1rem 0;
}

.score-slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-blue);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
    transition: all 0.2s ease;
}

.score-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.5);
}

.score-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-blue);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
}

.score-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

#scoreValue {
    font-weight: 700;
    color: var(--primary-blue);
    font-size: 1rem;
}

.score-presets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.score-preset {
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    text-align: center;
}

.score-preset:hover {
    border-color: var(--primary-blue);
    background: rgba(59, 130, 246, 0.1);
}

.score-preset.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
}

/* Radio Groups */
.filter-radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.filter-radio {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.filter-radio:hover {
    background: var(--bg-card-hover);
}

.filter-radio input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
    transition: all 0.3s ease;
}

.filter-radio input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary-blue);
    background: var(--primary-blue);
}

.filter-radio input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.radio-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Checkboxes */
.filter-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.filter-checkbox:hover {
    background: var(--bg-card-hover);
}

.filter-checkbox input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.filter-checkbox input[type="checkbox"]:checked + .checkbox-custom {
    border-color: var(--accent-green);
    background: var(--accent-green);
}

.filter-checkbox input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.85rem;
    font-weight: bold;
}

.checkbox-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Filters Footer */
.filters-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    position: sticky;
    bottom: 0;
}

.results-preview {
    text-align: center;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.filter-actions {
    display: flex;
    gap: 1rem;
}

.btn-secondary {
    flex: 1;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--primary-blue-light);
    border-radius: var(--radius);
    color: var(--primary-blue-dark);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    background: rgba(96, 165, 250, 0.15);
    color: var(--primary-blue);
}

.btn-primary {
    flex: 2;
    padding: 0.875rem 1rem;
    background: var(--primary-blue);
    border: 2px solid transparent;
    border-radius: var(--radius);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 0 2px 8px rgba(96, 165, 250, 0.25);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    border-color: var(--primary-blue-light);
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.35);
}

/* Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.45);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===== MOBILE RESPONSIVE IMPROVEMENTS ===== */

/* Mobile Typography Improvements */
@media (max-width: 768px) {
    /* Enhanced minimum readable font sizes on mobile */
    body {
        font-size: max(18px, 1.1rem);
        line-height: 1.7;
    }
    
    .water-card-title,
    .water-name {
        font-size: max(20px, 1.3rem) !important;
        line-height: 1.4 !important;
    }
    
    .water-card-subtitle,
    .water-type,
    .data-cell,
    .filter-option label {
        font-size: max(16px, 1rem) !important;
        line-height: 1.5 !important;
    }
    
    .info-label,
    .score-label {
        font-size: max(14px, 0.9rem) !important;
    }
    
    .info-value {
        font-size: max(16px, 1rem) !important;
        font-weight: 600 !important;
    }
    
    .btn,
    .action-btn {
        font-size: max(14px, 0.9rem) !important;
        padding: 0.75rem 1rem !important;
    }
}

/* Mobile Header Adaptations */
@media (max-width: 768px) {
    .header-main {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .header-actions {
        justify-content: space-between;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        flex-wrap: wrap;
    }
    
    .search-input-quick {
        min-width: 0;
        flex: 1;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }
    
    .quick-search {
        flex: 1;
        max-width: 100%;
        min-width: 0;
        box-sizing: border-box;
    }
    
    .filters-toggle-btn {
        padding: 0.625rem 1rem;
        font-size: 0.95rem;
    }
    
    .btn-text {
        display: none;
    }
    
    .btn-icon {
        font-size: 1.2rem;
    }
    
    /* Mobile Sidebar */
    .filters-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .filters-sidebar.active {
        right: 0;
    }
    
    .filters-header {
        padding: 1rem;
    }
    
    .filters-body {
        padding: 1rem;
    }
    
    .filters-footer {
        padding: 1rem;
    }
    
    /* Mobile Filter Chips */
    .filter-chips {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .filter-chip {
        justify-content: center;
        padding: 1rem;
        font-size: 1rem;
        border-radius: var(--radius);
    }
    
    /* Mobile Score Filter */
    .score-presets {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .score-preset {
        padding: 0.875rem;
        font-size: 0.95rem;
    }
    
    /* Mobile Active Filters */
    .active-filters-container {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .active-filters-tags {
        justify-content: center;
    }
    
    .clear-filters-btn {
        align-self: center;
        padding: 0.75rem 1.5rem;
    }
}

/* Bottom Sheet for Mobile Filters */
@media (max-width: 480px) {
    .filters-sidebar {
        top: auto;
        bottom: -100%;
        right: 0;
        width: 100%;
        height: 80vh;
        border-radius: 20px 20px 0 0;
        border-left: none;
        border-top: 1px solid var(--border-color);
        transition: bottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .filters-sidebar.active {
        bottom: 0;
    }
    
    .filters-header {
        position: relative;
        text-align: center;
        padding: 1rem;
    }
    
    .filters-header::before {
        content: '';
        position: absolute;
        top: 0.5rem;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 4px;
        background: var(--text-muted);
        border-radius: 2px;
        opacity: 0.5;
    }
    
    .close-sidebar-btn {
        position: absolute;
        top: 1rem;
        right: 1rem;
    }
    
    /* Mobile Touch Targets */
    .filter-chip,
    .score-preset,
    .filter-radio,
    .filter-checkbox {
        min-height: 44px;
        padding: 0.875rem;
    }
    
    .filter-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 1rem;
        font-size: 1rem;
    }
}

/* Enhanced Table Mobile Adaptations */
@media (max-width: 768px) {
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
    
    .data-table {
        min-width: 800px;
    }
    
    .data-table th,
    .data-table td {
        min-width: 120px;
        padding: 0.75rem 0.5rem;
        font-size: 0.95rem;
    }
    
    .table-name {
        min-width: 150px;
        font-weight: 600;
        position: sticky;
        left: 0;
        background: var(--bg-card);
        z-index: 1;
    }
    
    .table-actions {
        min-width: 100px;
        position: sticky;
        right: 0;
        background: var(--bg-card);
        z-index: 1;
    }
    
    .action-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
        min-height: 36px;
    }
}

/* Grid Mobile Optimizations */
@media (max-width: 768px) {
    .waters-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }
    
    .water-card {
        padding: 1.25rem;
    }
    
    .water-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        text-align: center;
    }
    
    .water-name {
        font-size: 1.3rem;
        line-height: 1.3;
    }
    
    .water-score {
        justify-content: center;
        gap: 0.75rem;
    }
    
    .score-badge {
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }
    
    .water-info {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .info-item {
        text-align: center;
        padding: 0.75rem;
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--radius);
    }
    
    .info-label {
        font-size: 0.85rem;
        margin-bottom: 0.25rem;
    }
    
    .info-value {
        font-size: 0.95rem;
        font-weight: 600;
    }
}

/* Enhanced Loading States */
.loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 10;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Skeleton Loading Animation */
.skeleton {
    background: linear-gradient(90deg, 
        var(--bg-secondary) 25%, 
        var(--bg-card-hover) 50%, 
        var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Enhanced Animations */
.stagger-animation {
    opacity: 0;
    transform: translateY(20px);
    animation: slideInUp 0.6s ease forwards;
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

.slide-in-right {
    transform: translateX(100%);
    animation: slideInRight 0.4s ease forwards;
}

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    to {
        transform: translateX(0);
    }
}

/* Enhanced Hover Effects */
.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple-effect:hover::before {
    width: 300px;
    height: 300px;
}

/* Success Animation for Score Badges */
.success-animation {
    animation: successPulse 0.6s ease;
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); box-shadow: 0 0 20px var(--accent-green); }
    100% { transform: scale(1); }
}

/* Magnetic Effect for Buttons */
.magnetic {
    transition: transform 0.2s ease;
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-muted: #000000;
    }
    
    body.dark-mode {
        --border-color: #ffffff;
        --text-muted: #ffffff;
    }
    
    .filter-chip,
    .score-preset,
    .btn-secondary {
        border-width: 2px;
    }
}

/* ===== ONBOARDING SYSTEM ===== */

/* Help Button */
.help-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1500;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
}

.help-button:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(59, 130, 246, 0.6);
}

.help-icon {
    font-size: 1.5rem;
    font-weight: bold;
}

.help-text {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Onboarding Overlay */
.onboarding-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.onboarding-overlay.active {
    opacity: 1;
}

/* Onboarding Tooltip */
.onboarding-tooltip {
    position: absolute;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    max-width: 400px;
    min-width: 300px;
    transform: scale(0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2100;
}

.onboarding-overlay.active .onboarding-tooltip {
    transform: scale(1);
}

.tooltip-content {
    padding: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.tooltip-header {
    padding: 1.5rem 1.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1) 0%, 
        rgba(147, 51, 234, 0.1) 100%);
    border-bottom: 1px solid var(--border-color);
}

.tooltip-header h4 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.skip-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s ease;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skip-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.tooltip-body {
    padding: 1rem 1.5rem 1.5rem;
}

.tooltip-body p {
    margin: 0;
    line-height: 1.6;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.tooltip-footer {
    padding: 1rem 1.5rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid var(--border-color);
}

/* Progress Indicators */
.progress-indicators {
    display: flex;
    gap: 0.5rem;
}

.progress-step {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all 0.3s ease;
}

.progress-step.active {
    background: var(--primary-blue);
    transform: scale(1.2);
}

.progress-step.completed {
    background: var(--accent-green);
}

/* Tooltip Actions */
.tooltip-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-ghost {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-card-hover);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-ghost:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Tooltip Arrow */
.tooltip-arrow {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transform: rotate(45deg);
    z-index: -1;
}

.tooltip-arrow.top {
    top: -8px;
    left: 50%;
    margin-left: -8px;
    border-bottom: none;
    border-right: none;
}

.tooltip-arrow.bottom {
    bottom: -8px;
    left: 50%;
    margin-left: -8px;
    border-top: none;
    border-left: none;
}

.tooltip-arrow.left {
    left: -8px;
    top: 50%;
    margin-top: -8px;
    border-top: none;
    border-right: none;
}

.tooltip-arrow.right {
    right: -8px;
    top: 50%;
    margin-top: -8px;
    border-bottom: none;
    border-left: none;
}

/* Spotlight Effect */
.spotlight {
    position: relative;
    z-index: 2050;
}

.spotlight::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 3px solid var(--primary-blue);
    border-radius: var(--radius-lg);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2),
                0 0 30px rgba(59, 130, 246, 0.4);
    animation: spotlightPulse 2s infinite;
    pointer-events: none;
}

@keyframes spotlightPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

/* Mobile Onboarding Adaptations */
@media (max-width: 768px) {
    .help-button {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }
    
    .help-icon {
        font-size: 1.3rem;
    }
    
    .help-text {
        font-size: 0.6rem;
    }
    
    .onboarding-tooltip {
        max-width: 90vw;
        min-width: 280px;
        margin: 0 5vw;
    }
    
    .tooltip-header,
    .tooltip-body,
    .tooltip-footer {
        padding: 1rem;
    }
    
    .tooltip-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .tooltip-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .btn-ghost,
    .btn-primary {
        flex: 1;
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .main-content {
        padding: 0.75rem;
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1.25rem;
        border-radius: var(--radius);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .water-card {
        padding: 1rem;
    }
    
    .water-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .water-name {
        font-size: 1.2rem;
        text-align: center;
    }
    
    .water-score {
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .water-badge {
        align-self: flex-start;
        font-size: 0.75rem;
        padding: 0.2rem 0.5rem;
    }
    
    .tap-card {
        padding: 1.5rem;
    }
    
    .comparison-card,
    .tip-card {
        padding: 1.25rem;
        border-radius: var(--radius);
    }
    
    .tip-icon {
        font-size: 1.75rem;
    }
    
    .tip-card h4 {
        font-size: 0.95rem;
    }
    
    .tip-card p {
        font-size: 0.85rem;
    }
    
    .nav-btn {
        padding: 0.5rem 0.8rem;
        min-height: 44px;
        border-radius: var(--radius);
    }
    
    .nav-text {
        font-size: 0.8rem;
        line-height: 1.2;
    }
    
    .modal {
        padding: 0.5rem;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    
    .modal-content-legacy {
        border-radius: var(--radius);
        max-height: 95vh;
    }
    
    .modal-close {
        padding: 0.5rem;
        border-radius: var(--radius);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: rgba(255, 255, 255, 0.6);
        --bg-card: rgba(255, 255, 255, 0.25);
        --bg-card-hover: rgba(255, 255, 255, 0.35);
    }
    
    .water-card {
        border-width: 2px;
    }
    
    .score-badge {
        border: 2px solid rgba(255, 255, 255, 0.3);
    }
    
    .action-btn {
        border: 2px solid rgba(255, 255, 255, 0.3);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .water-card:hover {
        transform: none;
    }
    
    .score-badge::before,
    .action-btn::before {
        display: none;
    }
    
    .shimmer {
        animation: none;
    }
}

/* Table Controls - Design premium */
.table-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-wrap: wrap;
    gap: 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    
    /* Gradient background */
    background-image: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.02) 0%, 
        rgba(147, 51, 234, 0.02) 100%);
    
    /* Border enhancement */
    position: relative;
    overflow: hidden;
}

.table-controls::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        var(--primary-blue) 0%, 
        var(--accent-green) 50%, 
        var(--primary-blue) 100%);
    opacity: 0.6;
}

.view-toggle {
    display: flex;
    gap: 0.25rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.view-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1) 0%, 
        rgba(147, 51, 234, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.view-btn.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3), 
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.view-btn.active::before {
    opacity: 0;
}

.view-btn.active .view-icon {
    transform: scale(1.1);
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.5));
}

.view-btn:hover:not(.active) {
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.view-btn:hover:not(.active)::before {
    opacity: 1;
}

.view-btn:hover .view-icon {
    transform: scale(1.05);
    transition: transform 0.3s ease;
}

.view-icon {
    font-size: 1.1rem;
    transition: all 0.3s ease;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.results-info {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
    
    /* Subtle animation */
    transition: all 0.3s ease;
}

.results-info:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    transform: scale(1.02);
}

/* Data Table - Design ultra-moderne */
.waters-table {
    margin-top: 1.5rem;
    width: 100%;
    animation: tableSlideIn 0.6s ease-out;
}

@keyframes tableSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.table-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 
                0 2px 8px rgba(0, 0, 0, 0.08);
    position: relative;
    
    /* Gradient overlay */
    background-image: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.02) 0%, 
        rgba(147, 51, 234, 0.02) 50%,
        rgba(16, 185, 129, 0.02) 100%);
}

.table-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--primary-blue) 0%, 
        var(--accent-green) 50%, 
        var(--primary-blue) 100%);
    z-index: 1;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.95rem;
    table-layout: fixed;
    min-width: 1200px;
    position: relative;
}

.data-table thead {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.15) 0%, 
        rgba(147, 51, 234, 0.15) 50%,
        rgba(16, 185, 129, 0.15) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 10;
    
    /* Enhanced shadow */
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.data-table th {
    padding: 1.25rem 1rem;
    text-align: left;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid rgba(59, 130, 246, 0.2);
    background: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-size: 0.85rem;
    
    /* Text gradient */
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    
    /* Hover preparation */
    transition: all 0.3s ease;
    position: relative;
}

.data-table th::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-green));
    transition: width 0.3s ease;
}

.data-table th:hover::before {
    width: 100%;
}

.data-table td {
    padding: 1rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    vertical-align: middle;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all 0.3s ease;
    font-weight: 500;
    
    /* Enhanced readability */
    font-variant-numeric: tabular-nums;
    line-height: 1.4;
}

.data-table tr:hover td {
    color: var(--text-primary);
    border-bottom-color: rgba(59, 130, 246, 0.15);
}

/* Largeurs fixes des colonnes pour éviter les bugs de layout */
.data-table th:nth-child(1), .data-table td:nth-child(1) { width: 14%; } /* Nom */
.data-table th:nth-child(2), .data-table td:nth-child(2) { width: 18%; } /* Type */
.data-table th:nth-child(3), .data-table td:nth-child(3) { width: 8%; text-align: center; } /* Score */
.data-table th:nth-child(4), .data-table td:nth-child(4) { width: 6%; text-align: center; } /* pH */
.data-table th:nth-child(5), .data-table td:nth-child(5) { width: 10%; text-align: center; } /* Calcium */
.data-table th:nth-child(6), .data-table td:nth-child(6) { width: 10%; text-align: center; } /* Magnésium */
.data-table th:nth-child(7), .data-table td:nth-child(7) { width: 8%; text-align: center; } /* Gazeuse */
.data-table th:nth-child(8), .data-table td:nth-child(8) { width: 18%; } /* Origine */
.data-table th:nth-child(9), .data-table td:nth-child(9) { width: 8%; text-align: center; } /* Actions */

.data-table tbody tr {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid transparent;
    cursor: pointer;
    position: relative;
}

.data-table tbody tr:hover {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.08) 0%, 
        rgba(147, 51, 234, 0.08) 50%,
        rgba(16, 185, 129, 0.08) 100%);
    transform: translateY(-2px) scale(1.005);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15),
                0 4px 12px rgba(59, 130, 246, 0.1);
    border-radius: 8px;
    margin: 0 -4px;
    z-index: 2;
}

.data-table tbody tr:hover + tr {
    border-top-color: transparent;
}

/* Staggered hover animation */
.data-table tbody tr:hover td {
    animation: cellHighlight 0.3s ease forwards;
}

@keyframes cellHighlight {
    0% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(2px);
    }
    100% {
        transform: translateX(0);
    }
}

.data-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.015);
}

.data-table tbody tr:nth-child(even):hover {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.08) 0%, 
        rgba(147, 51, 234, 0.08) 50%,
        rgba(16, 185, 129, 0.08) 100%);
}

/* Styles pour les en-têtes triables */
.data-table th.sortable {
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
    position: relative;
}

.data-table th.sortable:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--primary-blue);
}

.data-table th.sortable::after {
    content: '⇅';
    margin-left: 0.75rem;
    font-size: 0.95rem;
    opacity: 0.5;
    transition: all 0.3s ease;
    color: var(--primary-blue);
    font-weight: 800;
}

.data-table th.sortable:hover::after {
    opacity: 1;
    transform: scale(1.2);
    color: var(--accent-green);
}

.data-table th.sort-asc::after {
    content: '↑';
    opacity: 1;
    color: var(--primary-blue);
}

.data-table th.sort-desc::after {
    content: '↓';
    opacity: 1;
    color: var(--primary-blue);
}

/* Styles pour le contenu des cellules */
.table-name {
    font-weight: 700;
    color: var(--text-primary);
    max-width: 160px;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    letter-spacing: -0.01em;
}

.data-table tr:hover .table-name {
    color: var(--primary-blue);
    transform: translateX(4px);
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.table-type {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
    opacity: 0.8;
}

.table-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.table-actions {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.action-btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: white;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
    letter-spacing: 0.02em;
    
    /* Hover preparation */
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.action-btn:hover::before {
    left: 100%;
}

.action-btn:hover {
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue) 100%);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4), 
                0 2px 8px rgba(59, 130, 246, 0.2);
}

.action-btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Container avec scroll amélioré et animations */
.waters-table {
    overflow-x: auto;
    overflow-y: visible;
    border-radius: var(--radius-lg);
    /* Style personnalisé pour la scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--primary-blue) transparent;
    
    /* Smooth scrolling */
    scroll-behavior: smooth;
    
    /* Enhanced momentum scrolling */
    -webkit-overflow-scrolling: touch;
    
    /* Loading state */
    position: relative;
}

.waters-table.loading {
    opacity: 0.7;
    pointer-events: none;
}

.waters-table.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.1) 50%, 
        rgba(255, 255, 255, 0) 100%);
    animation: shimmer 1.5s infinite;
    z-index: 100;
}

.waters-table::-webkit-scrollbar {
    height: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 5px;
}

.waters-table::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 5px;
    margin: 0 4px;
}

.waters-table::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-green) 100%);
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.waters-table::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue) 100%);
    transform: scaleY(1.2);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Regional Water Data */
.regional-waters {
    margin-bottom: 4rem;
}
.regional-waters h3 {
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.regional-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.regional-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: var(--transition);
}

.regional-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.regional-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quality-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.indicator-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.indicator-good { background: var(--accent-green); }
.indicator-average { background: var(--accent-orange); }
.indicator-poor { background: var(--accent-red); }

.indicator-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Interactive Map */
.interactive-map {
    margin-bottom: 4rem;
}
.interactive-map h3 {
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.map-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    text-align: center;
}

.map-placeholder {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    margin-bottom: 2rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.map-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M20,20 L80,20 L80,80 L20,80 Z" fill="rgba(255,255,255,0.1)" stroke="rgba(255,255,255,0.3)" stroke-width="2"/></svg>');
    opacity: 0.3;
}

.map-placeholder h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.map-placeholder p {
    font-size: 1rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    margin-top: 0;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    flex-shrink: 0;
}

.legend-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Pollution Alerts */
.pollution-alerts {
    margin-bottom: 4rem;
}
.pollution-alerts h3 {
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
}

.alerts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.alert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 4px solid var(--accent-orange);
}

.alert-card.high-risk {
    border-left-color: var(--accent-red);
}

.alert-card.low-risk {
    border-left-color: var(--accent-green);
}

.alert-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.alert-icon {
    font-size: 1.2rem;
}

.alert-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.alert-content {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.alert-regions {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Animations avancées et micro-interactions */
@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.6), 0 0 30px rgba(59, 130, 246, 0.3);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(100px);
    }
    50% {
        opacity: 1;
        transform: scale(1.05) translateY(-10px);
    }
    70% {
        transform: scale(0.95) translateY(0);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes slideInFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    0% {
        opacity: 0;
        transform: translateX(100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* Classe pour les animations d'entrée */
.animate-in {
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

.animate-slide-left {
    animation: slideInFromLeft 0.5s ease-out forwards;
}

.animate-slide-right {
    animation: slideInFromRight 0.5s ease-out forwards;
}

/* Loading shimmer effect */
.shimmer {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        rgba(255, 255, 255, 0) 100%);
    background-size: 200px 100%;
    animation: shimmer 1.5s infinite;
}

/* Ripple effect pour les boutons */
.ripple-effect {
    position: relative;
    overflow: hidden;
}

/* ===== MODAL RESPONSIVE IMPROVEMENTS ===== */
@media (max-width: 768px) {
    .modal-content-legacy {
        margin: 1rem;
        max-width: calc(100% - 2rem);
        max-height: calc(100vh - 2rem);
        border-radius: var(--radius-lg);
    }
    
    .modal-header {
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        border-top-left-radius: var(--radius-lg);
        border-top-right-radius: var(--radius-lg);
    }
    
    .modal-title-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        min-height: auto;
    }
    
    .modal-water-name {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .modal-badges {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    
    .modal-close {
        position: absolute;
        top: 1rem;
        right: 1rem;
        padding: 0.5rem;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
        backdrop-filter: blur(10px);
    }
    
    .modal-subtitle {
        font-size: 0.9rem;
        margin-top: 0.25rem;
    }
}

.ripple-effect::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple-effect:active::before {
    width: 300px;
    height: 300px;
}

/* Hover effects avancés */
.enhanced-hover {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.enhanced-hover:hover {
    transform: translateY(-4px) scale(1.02);
    filter: brightness(1.1) saturate(1.1);
}

/* Magnetic effect pour les éléments interactifs */
.magnetic {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Glass morphism avancé */
.glass-advanced {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), 
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* Parallax scrolling elements */
.parallax-element {
    transition: transform 0.1s ease-out;
}

/* Focus visible support */
@supports selector(:focus-visible) {
    .nav-btn:focus:not(:focus-visible),
    .category-card:focus:not(:focus-visible),
    .water-card:focus:not(:focus-visible),
    .modal-close:focus:not(:focus-visible),
    .dark-mode-toggle:focus:not(:focus-visible),
    .view-btn:focus:not(:focus-visible),
    .action-btn:focus:not(:focus-visible) {
        outline: none;
    }
}
/* Skip link (accessibilité) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: fixed;
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  overflow: visible;
  background: var(--bg-card, #ffffff);
  color: var(--text-primary, #0a0a0a);
  padding: 10px 14px;
  border-radius: var(--radius, 10px);
  outline: 2px solid var(--primary-blue, #2b6cb0);
  box-shadow: var(--shadow, 0 10px 30px rgba(0,0,0,0.1));
  z-index: 3000;
}
/* =====================
   Responsive compact mode (50% size reduction intent)
   Non-invasive overrides appended to keep DA intact
===================== */

/* Global compaction */
html { font-size: 14px; }
@media (max-width: 1200px) { html { font-size: 13px; } }
@media (max-width: 900px)  { html { font-size: 12px; } }
@media (max-width: 600px)  { html { font-size: 11px; } }

body { line-height: 1.35; }

/* Header and nav */
.header { padding: 14px 18px; }
.logo { font-size: 1.6rem; }
.main-nav { gap: 6px; padding: 6px 10px; }
.nav-btn { padding: 10px 14px; font-size: max(14px, 0.95rem); min-height: 48px; }
.nav-icon { font-size: max(16px, 1.1rem); }
.nav-text { font-size: max(14px, 0.95rem); line-height: 1.3; }
@media (max-width: 640px) {
  .main-nav { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .nav-text { display: none; }
}

/* View headers */
.view-header h2 { font-size: max(18px, 1.2rem); }
.filters-toggle-btn { padding: 8px 12px; font-size: max(14px, 0.95rem); min-height: 44px; }
.search-input-quick { height: 44px; font-size: max(16px, 1rem); padding: 0 12px; }

/* Hero and stats */
.hero h2 { font-size: max(24px, 1.6rem); line-height: 1.3; }
.hero p { font-size: max(16px, 1.05rem); line-height: 1.6; }
.stats-grid { gap: 14px; }
.stat-card { padding: 16px; min-height: 120px; }
.stat-card .stat-number { font-size: max(22px, 1.5rem); }
.stat-card .stat-label { font-size: max(13px, 0.9rem); line-height: 1.4; }

/* Enhanced Categories */
.category-card { padding: 16px; min-height: 120px; }
.category-card h4 { font-size: max(18px, 1.1rem); line-height: 1.3; margin-bottom: 0.5rem; }
.category-card p { font-size: max(14px, 0.95rem); line-height: 1.5; }

/* Enhanced Waters grid/cards - MOBILE ONLY */
@media (max-width: 480px) {
.waters-grid { grid-template-columns: 1fr !important; gap: 16px; padding: 1rem; }
.water-card { padding: 16px; min-height: 200px; }
.water-name { font-size: max(18px, 1.15rem) !important; line-height: 1.3 !important; }
.water-type { font-size: max(14px, 0.9rem) !important; margin-bottom: 0.8rem; }
.water-score .score-label { font-size: max(13px, 0.85rem) !important; }
.score-badge { font-size: max(14px, 0.9rem) !important; padding: 0.4rem 0.8rem; min-height: 32px; }
.water-info { gap: 12px; margin-top: 1rem; }
.water-origin { font-size: max(14px, 0.9rem) !important; line-height: 1.4; padding-top: 0.8rem; }
}

@media (max-width: 900px) {
  .waters-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}
@media (max-width: 640px) {
  .waters-grid { grid-template-columns: 1fr; }
}

/* Table view */
.table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table th, .data-table td { padding: 8px 10px; font-size: 0.9rem; }
.data-table th { white-space: nowrap; }

/* Filters sidebar */
.filters-sidebar { width: 360px; }
.search-input-enhanced { height: 36px; font-size: 0.95rem; }
.filter-chip { padding: 6px 10px; font-size: 0.9rem; }
.filter-select { height: 34px; font-size: 0.95rem; }
.score-slider { height: 4px; }
.score-presets .score-preset { padding: 6px 10px; font-size: 0.9rem; }
.btn-primary, .btn-secondary, .btn-ghost { padding: 12px 16px; font-size: max(15px, 1rem); min-height: 44px; line-height: 1.2; }
@media (max-width: 900px) {
  .filters-sidebar { width: 320px; }
}
@media (max-width: 640px) {
  .filters-sidebar { width: 85vw; }
}

/* Modal */
/* legacy modal size rule disabled for drawer
.modal-content { max-width: 680px; }
*/
.modal .modal-header h3, .modal-water-name { font-size: 1.1rem; }
.modal .modal-body { font-size: 0.95rem; }
.score-badge-large { font-size: 1.25rem; padding: 6px 10px; }
@media (max-width: 640px) {
  /* .modal-content { width: 95vw; } */
}

/* Tap/Compare sections */
.compare-select { height: 34px; font-size: 0.95rem; }
.compare-label { font-size: 0.85rem; }
.compare-value { font-size: 0.95rem; }
.tap-card { padding: 12px; }
.tap-stat .stat-value { font-size: 1.15rem; }
.tap-stat .stat-label { font-size: 0.85rem; }

/* Grids inside views */
.category-grid, .regional-grid, .comparison-grid, .quality-grid, .tips-grid { gap: 12px; }
@media (max-width: 900px) {
  .regional-grid, .comparison-grid, .tips-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .regional-grid, .comparison-grid, .tips-grid { grid-template-columns: 1fr; }
}
/* Reduced-motion class to dampen animations */
body.reduced-motion *, body.reduced-motion *::before, body.reduced-motion *::after {
  animation-duration: 0.2s !important;
  transition-duration: 0.15s !important;
  animation-iteration-count: 1 !important;
}
body.reduced-motion .floating { animation: none !important; }
body.reduced-motion .reveal, body.reduced-motion .stagger-animation { transition-duration: 0.12s !important; }
/* Icons in active filter tags */
.filter-tag .tag-icon { margin-right: 6px; display: inline-flex; align-items: center; }
.filter-tag .filter-tag-remove { margin-left: 6px; }
/* Home hero actions */
.hero .hero-actions { display: flex; gap: 0.75rem; margin-top: 0.75rem; flex-wrap: wrap; }
/* Center hero actions on all viewports for harmony */
.hero .hero-actions { justify-content: center; }
@media (max-width: 640px) { .hero .hero-actions { justify-content: center; } }
/* Minimal hero variant */
.hero.hero-simple { padding-bottom: 1.25rem; }
.hero.hero-simple h2 { margin-bottom: 0.5rem; }
.hero.hero-simple p { max-width: 60ch; }
@media (max-width: 640px) { .hero.hero-simple p { max-width: 100%; } }
/* Subline under minimal hero */
.hero-subline { color: var(--text-secondary); font-size: 0.95rem; margin-top: 0.25rem; }

/* Home layout centering & harmony */
#home .category-grid,
#home .why-section { 
    max-width: 960px; 
    /* Responsive vertical spacing (airier on desktop) */
    margin: clamp(24px, 5vw, 64px) auto; 
}

.why-section h3 {
    text-align: center;
    /* Responsive title spacing (slightly larger on desktop) */
    margin-bottom: clamp(10px, 2.5vw, 20px);
}

/* Responsive gaps for grids on home */
#home .stats-grid { gap: clamp(12px, 2.5vw, 24px); }
#home .category-grid { gap: clamp(12px, 2.5vw, 24px); }
.why-section .category-grid { gap: clamp(12px, 2.5vw, 24px); }

/* Responsive spacing for hero elements */
.hero .hero-actions { gap: clamp(12px, 2vw, 24px); }
.hero-subline { margin-top: clamp(6px, 1.2vw, 12px); }

/* Bigger, more prominent hero buttons */
.hero .action-btn {
  padding: 0.8rem 1.25rem;
  font-size: 1rem;
  border-radius: calc(var(--radius) + 2px);
}

/* Two-column intro layout on Home */
.home-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); /* split hero into two columns */
  gap: clamp(16px, 4vw, 40px);
  align-items: center;
  max-width: 1200px;
  margin: 0 auto clamp(24px, 5vw, 48px);
}

.home-intro-left .hero { text-align: left; padding-right: 0; }
.home-intro-left .hero h2 {
  /* Subtler left-aligned gradient for readability */
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(59, 130, 246, 0.65) 50%,
    rgba(139, 92, 246, 0.55) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 2px 8px rgba(59, 130, 246, 0.10));
  animation: none;
}
.home-intro-left .hero p { margin-left: 0; margin-right: 0; }
.home-intro-left .hero .hero-actions { justify-content: flex-start; }


.home-intro-right { display: flex; justify-content: center; }
@media (min-width: 961px) {
  .home-intro-right {
    padding-left: clamp(16px, 3vw, 32px);
  }
}

.hero-aside {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: clamp(16px, 3vw, 24px);
  box-shadow: var(--shadow-glass);
  max-width: 520px;
  width: 100%;
}

.hero-aside-title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hero-aside-list {
  margin: 0 0 12px 0;
  padding-left: 18px;
  color: var(--text-secondary);
}

.hero-aside-list li { margin: 6px 0; }

.hero-aside .action-btn { margin-top: 4px; }

/* Quick access buttons inside hero aside */
.hero-quick { display: flex; gap: 8px; flex-wrap: wrap; }

@media (max-width: 960px) {
  .home-intro { grid-template-columns: 1fr; }
  .hero-aside { max-width: 100%; }
}

/* Lightweight grid headings inside unified discovery grid */
.grid-heading {
  grid-column: 1 / -1;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  margin-top: clamp(8px, 2vw, 16px);
  margin-bottom: clamp(6px, 1.5vw, 12px);
}
/* Inline tooltip near titles */
.info-wrapper { position: relative; display: inline-flex; align-items: center; margin-left: 0.5rem; vertical-align: middle; }
.info-btn { border: 1px solid var(--border-color); background: var(--bg-card); color: var(--text-secondary); border-radius: 999px; padding: 0.1rem 0.4rem; font-size: 0.8rem; cursor: pointer; vertical-align: middle; transition: all 0.2s ease; }
.info-btn:hover, .info-btn:focus { color: var(--primary-blue); border-color: var(--primary-blue); outline: none; }
.inline-tooltip { position: absolute; top: 115%; left: 0; min-width: 260px; max-width: 320px; padding: 0.75rem 1rem; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); box-shadow: 0 10px 30px rgba(0,0,0,0.12); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); z-index: 200; display: none; }
.inline-tooltip::after { content: ""; position: absolute; top: -6px; left: 14px; width: 12px; height: 12px; background: var(--bg-card); border-left: 1px solid var(--border-color); border-top: 1px solid var(--border-color); transform: rotate(45deg); }
.inline-tooltip .tooltip-title { font-weight: 700; margin-bottom: 0.35rem; color: var(--text-primary); }
.inline-tooltip .tooltip-list { margin: 0; padding-left: 1rem; color: var(--text-secondary); font-size: 0.95rem; }
.inline-tooltip .tooltip-list li { margin: 0.15rem 0; }
.inline-tooltip .tooltip-note { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-secondary); }
@media (max-width: 640px) { .inline-tooltip { left: auto; right: 0; } .inline-tooltip::after { left: auto; right: 14px; } }

/* Zero state hint for active filters */
.filter-zero-state {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-style: italic;
  padding: 4px 8px;
}
.view-toolbar { margin-top: 0.75rem; }
.view-header .view-toolbar { margin-top: 0.75rem; }
.tap-water-info .tap-title { margin: 0 0 1rem 0; }