/* ==========================================================================
   AQUARIUM TEMPLATE - PREMIUM CSS
   Ocean-themed design with immersive underwater effects
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */

:root {
    /* Color Palette - Ocean Theme */
    --color-ocean-deep: #001f3f;
    --color-ocean-mid: #003d7a;
    --color-ocean-light: #0066cc;
    --color-teal: #008B8B;
    --color-teal-light: #20B2AA;
    --color-seafoam: #7fffd4;
    --color-coral: #FF6B6B;
    --color-coral-light: #FF8E8E;
    --color-sand: #f4e4c1;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-neutral-50: #f9fafb;
    --color-neutral-100: #f3f4f6;
    --color-neutral-200: #e5e7eb;
    --color-neutral-300: #d1d5db;
    --color-neutral-400: #9ca3af;
    --color-neutral-500: #6b7280;
    --color-neutral-600: #4b5563;
    --color-neutral-700: #374151;
    --color-neutral-800: #1f2937;
    --color-neutral-900: #111827;

    /* Dark Mode Ocean Colors */
    --color-dark-bg: #0a1628;
    --color-dark-surface: #0f1e33;
    --color-dark-border: #1a2942;

    /* Typography Scale */
    --text-hero: clamp(3rem, 8vw, 6rem);
    --text-display: clamp(2.5rem, 5vw, 4rem);
    --text-h1: clamp(2rem, 4vw, 3rem);
    --text-h2: clamp(1.5rem, 3vw, 2.25rem);
    --text-h3: clamp(1.25rem, 2vw, 1.5rem);
    --text-h4: 1.125rem;
    --text-body: 1rem;
    --text-small: 0.875rem;
    --text-xs: 0.75rem;

    /* Spacing Scale (8px base) */
    --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;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    --space-40: 10rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Ocean Glows */
    --glow-teal: 0 0 30px rgba(32, 178, 170, 0.3);
    --glow-teal-lg: 0 0 60px rgba(32, 178, 170, 0.4);
    --glow-coral: 0 0 30px rgba(255, 107, 107, 0.3);
    --glow-seafoam: 0 0 40px rgba(127, 255, 212, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: 800ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-tooltip: 1050;
}

/* Dark Mode Overrides */
.dark {
    --color-neutral-50: #1f2937;
    --color-neutral-100: #111827;
    --color-white: #0a1628;
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--text-body);
    line-height: 1.7;
    color: var(--color-neutral-700);
    background: var(--color-white);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.dark body {
    background: var(--color-dark-bg);
    color: var(--color-neutral-300);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-neutral-900);
    margin-bottom: var(--space-4);
}

.dark h1, .dark h2, .dark h3, .dark h4, .dark h5, .dark h6 {
    color: var(--color-white);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }
h4 { font-size: var(--text-h4); }

p {
    margin-bottom: var(--space-4);
}

a {
    color: var(--color-ocean-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-teal-light);
}

.dark a {
    color: var(--color-teal-light);
}

.dark a:hover {
    color: var(--color-seafoam);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Selection */
::selection {
    background: var(--color-teal);
    color: white;
}

::-moz-selection {
    background: var(--color-teal);
    color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-neutral-100);
}

.dark ::-webkit-scrollbar-track {
    background: var(--color-dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-teal);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-teal-light);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-teal);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-ocean-deep);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* ==========================================================================
   LAYOUT & UTILITIES
   ========================================================================== */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

section {
    padding: var(--space-20) 0;
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--text-h4);
    color: var(--color-neutral-600);
}

.dark .section-header p {
    color: var(--color-neutral-400);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-teal);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--text-small);
    font-weight: 600;
}

.badge-coral {
    background: var(--color-coral);
}

.badge-seafoam {
    background: var(--color-seafoam);
    color: var(--color-ocean-deep);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--text-body);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-ocean-light);
    color: white;
}

.btn-primary:hover {
    background: var(--color-ocean-mid);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-teal {
    background: var(--color-teal);
    color: white;
}

.btn-teal:hover {
    background: var(--color-teal-light);
    transform: translateY(-2px);
    box-shadow: var(--glow-teal);
}

.btn-coral {
    background: var(--color-coral);
    color: white;
}

.btn-coral:hover {
    background: var(--color-coral-light);
    transform: translateY(-2px);
    box-shadow: var(--glow-coral);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-ocean-light);
    color: var(--color-ocean-light);
}

.btn-outline:hover {
    background: var(--color-ocean-light);
    color: white;
}

.dark .btn-outline {
    border-color: var(--color-teal-light);
    color: var(--color-teal-light);
}

.dark .btn-outline:hover {
    background: var(--color-teal-light);
    color: var(--color-dark-bg);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-neutral-200);
    transition: all var(--transition-base);
}

.dark nav {
    background: rgba(10, 22, 40, 0.9);
    border-bottom-color: var(--color-dark-border);
}

nav.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-ocean-deep);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.dark .logo {
    color: var(--color-teal-light);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.nav-links a {
    color: var(--color-neutral-700);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-teal);
    transition: width var(--transition-base);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.dark .nav-links a {
    color: var(--color-neutral-300);
}

.dark .nav-links a:hover {
    color: var(--color-teal-light);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

#theme-toggle {
    background: var(--color-neutral-100);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

#theme-toggle:hover {
    background: var(--color-neutral-200);
    transform: rotate(15deg);
}

.dark #theme-toggle {
    background: var(--color-dark-surface);
}

.dark #theme-toggle:hover {
    background: var(--color-dark-border);
}

#mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

/* Mobile Menu */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--space-6);
        gap: var(--space-4);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-xl);
    }

    .dark .nav-links {
        background: var(--color-dark-surface);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    #mobile-menu-toggle {
        display: block;
    }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, var(--color-ocean-deep) 0%, var(--color-ocean-mid) 100%);
    padding-top: 80px;
}

.dark .hero {
    background: linear-gradient(180deg, var(--color-dark-bg) 0%, var(--color-ocean-deep) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: var(--text-hero);
    color: white;
    margin-bottom: var(--space-6);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: var(--text-h3);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Underwater Effect */
.underwater-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    opacity: 0.3;
}

.bubble {
    position: absolute;
    bottom: -100px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.1) 100%);
    border-radius: 50%;
    animation: rise linear infinite;
}

@keyframes rise {
    to {
        bottom: 100%;
        transform: translateX(100px);
    }
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 100'%3E%3Cpath fill='rgba(255,255,255,0.1)' d='M0,50 Q300,0 600,50 T1200,50 L1200,100 L0,100 Z'/%3E%3C/svg%3E");
    background-size: 50% 100%;
    animation: wave 20s linear infinite;
}

@keyframes wave {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ==========================================================================
   CARDS
   ========================================================================== */

.grid {
    display: grid;
    gap: var(--space-8);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Exhibit Card */
.exhibit-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-slow);
    border: 1px solid var(--color-neutral-200);
}

.dark .exhibit-card {
    background: var(--color-dark-surface);
    border-color: var(--color-dark-border);
}

.exhibit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.exhibit-card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
    background: var(--color-neutral-100);
}

.dark .exhibit-card-image {
    background: var(--color-dark-bg);
}

.exhibit-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.exhibit-card:hover .exhibit-card-image img {
    transform: scale(1.1);
}

.exhibit-card-badge {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
}

.exhibit-card-content {
    padding: var(--space-6);
}

.exhibit-card h3 {
    margin-bottom: var(--space-3);
    color: var(--color-ocean-deep);
}

.dark .exhibit-card h3 {
    color: var(--color-teal-light);
}

.exhibit-card p {
    color: var(--color-neutral-600);
    margin-bottom: var(--space-4);
}

.dark .exhibit-card p {
    color: var(--color-neutral-400);
}

/* Animal Card */
.animal-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-slow);
    border: 1px solid var(--color-neutral-200);
}

.dark .animal-card {
    background: var(--color-dark-surface);
    border-color: var(--color-dark-border);
}

.animal-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--glow-teal-lg);
}

.animal-card-image {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--color-neutral-100);
}

.dark .animal-card-image {
    background: var(--color-dark-bg);
}

.animal-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.animal-card:hover .animal-card-image img {
    transform: scale(1.05);
}

.animal-card-content {
    padding: var(--space-6);
}

.animal-name {
    font-size: var(--text-h3);
    margin-bottom: var(--space-2);
}

.animal-scientific {
    font-style: italic;
    color: var(--color-neutral-500);
    font-size: var(--text-small);
    margin-bottom: var(--space-4);
}

.dark .animal-scientific {
    color: var(--color-neutral-400);
}

.animal-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    margin-top: var(--space-3);
}

.status-safe {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.status-vulnerable {
    background: rgba(234, 179, 8, 0.1);
    color: #ca8a04;
}

.status-endangered {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

/* Event Card */
.event-card {
    display: flex;
    gap: var(--space-6);
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-neutral-200);
    transition: all var(--transition-base);
}

.dark .event-card {
    background: var(--color-dark-surface);
    border-color: var(--color-dark-border);
}

.event-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.event-date {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    padding: var(--space-4);
    background: var(--color-teal);
    color: white;
    border-radius: var(--radius-lg);
}

.event-day {
    font-size: var(--text-h2);
    font-weight: 800;
    line-height: 1;
}

.event-month {
    font-size: var(--text-small);
    text-transform: uppercase;
    font-weight: 600;
    margin-top: var(--space-1);
}

.event-details h3 {
    margin-bottom: var(--space-2);
}

.event-time {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-neutral-500);
    font-size: var(--text-small);
    margin-bottom: var(--space-3);
}

.dark .event-time {
    color: var(--color-neutral-400);
}

/* Pricing Card */
.pricing-card {
    background: white;
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
    position: relative;
}

.dark .pricing-card {
    background: var(--color-dark-surface);
    border-color: var(--color-dark-border);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.pricing-card.featured {
    border-color: var(--color-teal);
    box-shadow: var(--glow-teal-lg);
}

.pricing-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-6);
    background: var(--color-teal);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--text-small);
    font-weight: 700;
}

.pricing-card h3 {
    font-size: var(--text-h3);
    margin-bottom: var(--space-2);
}

.pricing-price {
    font-size: var(--text-display);
    font-weight: 800;
    color: var(--color-ocean-deep);
    margin-bottom: var(--space-2);
}

.dark .pricing-price {
    color: var(--color-teal-light);
}

.pricing-price span {
    font-size: var(--text-body);
    font-weight: 500;
    color: var(--color-neutral-500);
}

.pricing-features {
    list-style: none;
    margin: var(--space-6) 0;
    padding: 0;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-neutral-100);
}

.dark .pricing-features li {
    border-bottom-color: var(--color-dark-border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features svg {
    flex-shrink: 0;
    color: var(--color-teal);
}

/* ==========================================================================
   STATISTICS
   ========================================================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    text-align: center;
}

.stat-item {
    padding: var(--space-6);
}

.stat-number {
    font-size: var(--text-display);
    font-weight: 800;
    color: var(--color-teal);
    margin-bottom: var(--space-2);
}

.stat-label {
    color: var(--color-neutral-600);
    font-size: var(--text-h4);
}

.dark .stat-label {
    color: var(--color-neutral-400);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
    background: var(--color-ocean-deep);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-20) 0 var(--space-8);
    margin-top: var(--space-32);
}

.dark footer {
    background: var(--color-dark-bg);
    border-top: 1px solid var(--color-dark-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand h3 {
    color: white;
    font-size: var(--text-h3);
    margin-bottom: var(--space-4);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-6);
}

.social-links {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-teal);
    transform: translateY(-4px);
}

.footer-links h4 {
    color: white;
    margin-bottom: var(--space-4);
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-teal-light);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--text-small);
}

.dark .footer-bottom {
    border-top-color: var(--color-dark-border);
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ==========================================================================
   HOVER EFFECTS
   ========================================================================== */

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-zoom:hover img {
    transform: scale(1.05);
}

/* ==========================================================================
   CONTINUOUS ANIMATIONS
   ========================================================================== */

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring {
    animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 768px) {
    section {
        padding: var(--space-16) 0;
    }

    .hero {
        min-height: 80vh;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .event-card {
        flex-direction: column;
    }

    .event-date {
        width: 100%;
        text-align: left;
        display: flex;
        align-items: center;
        gap: var(--space-3);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */

@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;
    }

    .reveal, .reveal-left, .reveal-right, .reveal-scale {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    nav,
    footer,
    .hero-buttons,
    #theme-toggle {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}