/* CSS Variables for theming */
:root {
    /* Light theme colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark theme colors */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color), #8b5cf6, #ec4899);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-normal);
    animation: gradientShift 3s ease-in-out infinite;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), #8b5cf6, #ec4899);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.logo:hover::after {
    transform: scaleX(1);
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.05);
}

.theme-toggle svg {
    transition: all var(--transition-normal);
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: block;
}

/* Filter Section */
.filter-section {
    background-color: var(--bg-secondary);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.filter-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left var(--transition-slow);
}

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

.filter-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2), transparent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all var(--transition-normal);
}

.filter-btn:hover::after {
    width: 100%;
    height: 100%;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left var(--transition-slow);
}

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

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Gallery Container */
.gallery-container {
    flex: 1;
    padding: 3rem 0;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
}

/* Gallery Item */
.gallery-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.gallery-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
}

.gallery-item:hover::before {
    opacity: 1;
}

.gallery-item:hover {
    transform: translateY(-8px) scale(1.02) rotate(1deg);
    box-shadow: var(--shadow-xl);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), #8b5cf6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.gallery-item:hover::after {
    transform: scaleX(1);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: all var(--transition-normal);
    filter: grayscale(20%) brightness(0.9);
    transform: scale(1);
}

.gallery-item:hover img {
    filter: grayscale(0%) brightness(1.1);
    transform: scale(1.15);
}

.gallery-item img {
    position: relative;
    z-index: 2;
}

.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1.5rem 1.5rem;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-item-overlay {
    transform: translateY(0);
}

.gallery-item-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.gallery-item-category {
    font-size: 0.875rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Lightbox Styles */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.lightbox-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    max-width: 90vw;
    max-height: 90vh;
    transition: transform var(--transition-normal);
}

.lightbox.active .lightbox-content {
    transform: translate(-50%, -50%) scale(1);
}

.lightbox-image-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.lightbox-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    display: block;
}

.lightbox-close {
    position: absolute;
    top: -3rem;
    right: 0;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
    left: -4rem;
}

.lightbox-next {
    right: -4rem;
}

.lightbox-caption {
    position: absolute;
    bottom: -3rem;
    left: 0;
    right: 0;
    text-align: center;
    color: white;
    font-size: 1.125rem;
    font-weight: 500;
}

/* Loading Styles */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    transition: opacity var(--transition-normal);
}

.loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-color);
    border-right: 3px solid #8b5cf6;
    border-bottom: 3px solid #ec4899;
    border-radius: 50%;
    animation: spin 1.5s linear infinite;
    position: relative;
}

.loading-spinner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--accent-color), #8b5cf6);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.7; }
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .filter-container {
        padding: 0 1rem;
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
        padding: 0 1rem;
    }
    
    .gallery-item img {
        height: 200px;
    }
    
    .lightbox-nav {
        padding: 0.75rem;
    }
    
    .lightbox-prev {
        left: 1rem;
    }
    
    .lightbox-next {
        right: 1rem;
    }
    
    .lightbox-close {
        top: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .filter-container {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

.slide-in {
    animation: slideIn 0.3s ease forwards;
}

.slide-out {
    animation: slideOut 0.3s ease forwards;
}

/* Focus styles for accessibility */
button:focus,
.gallery-item:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Smooth scrolling for the entire page */
html {
    scroll-behavior: smooth;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-color), #8b5cf6);
    border-radius: var(--radius-sm);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #2563eb, #7c3aed);
    transform: scale(1.1);
}

/* Scroll indicator */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--bg-secondary);
    z-index: 1000;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), #8b5cf6, #ec4899);
    width: var(--scroll-width, 0%);
    transition: width 0.1s ease;
}

/* Footer Styles */
.footer {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.footer-section:nth-child(1) { animation-delay: 0.1s; }
.footer-section:nth-child(2) { animation-delay: 0.2s; }
.footer-section:nth-child(3) { animation-delay: 0.3s; }

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent-color);
    border-radius: 1px;
    animation: expandWidth 0.8s ease forwards 0.5s;
}

@keyframes expandWidth {
    from { width: 0; }
    to { width: 30px; }
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-subtitle {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
}

.footer-subtitle::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 2px;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInLeft 0.6s ease forwards;
}

.footer-links li:nth-child(1) { animation-delay: 0.4s; }
.footer-links li:nth-child(2) { animation-delay: 0.5s; }
.footer-links li:nth-child(3) { animation-delay: 0.6s; }
.footer-links li:nth-child(4) { animation-delay: 0.7s; }

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
    padding-left: 0;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: -15px;
    opacity: 0;
    transition: all var(--transition-fast);
    color: var(--accent-color);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 15px;
}

.footer-links a:hover::before {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left var(--transition-slow);
}

.social-link:hover::before {
    left: 100%;
}

.social-link:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    background: var(--bg-primary);
    position: relative;
}

.footer-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.footer-copyright {
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.8s;
}

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

.footer-copyright p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.author-name {
    font-weight: 600;
    color: var(--accent-color);
    position: relative;
    display: inline-block;
}

.author-name::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
}

.author-name:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.footer-tagline {
    font-style: italic;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* Enhanced Gallery Grid for more images */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 0 2rem;
    position: relative;
}

/* Add a subtle background pattern */
.gallery-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Floating particles effect */
.gallery-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(59, 130, 246, 0.1), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(139, 92, 246, 0.1), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(236, 72, 153, 0.1), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(59, 130, 246, 0.1), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(139, 92, 246, 0.1), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: floatParticles 20s linear infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes floatParticles {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-100px); }
}

/* Enhanced Gallery Item animations */
.gallery-item {
    animation-delay: calc(var(--item-index, 0) * 0.1s);
}

.gallery-item:nth-child(odd) {
    animation-delay: calc(var(--item-index, 0) * 0.1s + 0.05s);
}

/* Floating animation for gallery items */
.gallery-item {
    animation: fadeInUp 0.6s ease forwards, float 6s ease-in-out infinite;
    animation-delay: calc(var(--item-index, 0) * 0.1s), calc(var(--item-index, 0) * 0.2s + 2s);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Staggered entrance animation */
.gallery-item:nth-child(3n+1) { animation-delay: calc(var(--item-index, 0) * 0.08s), calc(var(--item-index, 0) * 0.15s + 1s); }
.gallery-item:nth-child(3n+2) { animation-delay: calc(var(--item-index, 0) * 0.12s), calc(var(--item-index, 0) * 0.25s + 1.5s); }
.gallery-item:nth-child(3n+3) { animation-delay: calc(var(--item-index, 0) * 0.16s), calc(var(--item-index, 0) * 0.35s + 2s); }

/* Responsive Footer */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem 1rem 1rem;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-subtitle::before {
        display: none;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 480px) {
    .footer-content {
        gap: 1.5rem;
    }
    
    .footer-title {
        font-size: 1.25rem;
    }
    
    .social-link {
        width: 35px;
        height: 35px;
    }
}