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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #f8f9fa;
    --text-color: #2c3e50;
    --light-gray: #ecf0f1;
    --border-radius: 12px;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-color);
    min-height: 100vh;
}

/* Header */
header {
    background: var(--primary-color);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.logo a {
    color: white;
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo a::before {
    content: '🖼️';
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
    position: relative;
}

.nav-links a:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-links a:hover::after {
    width: 80%;
}

.admin-link {
    background: var(--accent-color);
    padding: 0.8rem 1.5rem !important;
}

.admin-link:hover {
    background: #c0392b !important;
}

/* Main content */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    min-height: 70vh;
}

/* Grid layouts */
.categories-grid,
.galleries-grid,
.related-grid,
.gallery-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

/* Cards */
.category-card,
.gallery-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.category-card:hover,
.gallery-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 35px rgba(0,0,0,0.15);
}

.category-card img,
.gallery-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

.category-card:hover img,
.gallery-card:hover img {
    transform: scale(1.05);
}

.placeholder {
    width: 100%;
    height: 220px;
    background: linear-gradient(45deg, var(--light-gray), #f8f9fa);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #7f8c8d;
    font-size: 3rem;
}

.category-info,
.gallery-info {
    padding: 1.5rem;
}

.category-info h3,
.gallery-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
}

.stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--light-gray);
    font-size: 0.9rem;
}

.stats span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: #7f8c8d;
}

.stats span::before {
    font-size: 1.1rem;
}

.gallery-count {
    color: var(--accent-color) !important;
    font-weight: bold;
    font-size: 1rem !important;
}

/* Image grid in gallery */
.gallery-images {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.image-item {
    position: relative;
    cursor: pointer;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.image-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.image-item img {
    width: 100%;
    height: 430px;
    object-fit: cover;
    transition: var(--transition);
}

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

.image-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    padding: 1rem;
    font-size: 0.8rem;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
}

.image-item:hover .image-stats {
    opacity: 1;
    transform: translateY(0);
}

/* Tag */
.gallery-tags .badge {
    font-size: 0.75rem;
}
/* Modal */
.image-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    margin: auto;
    padding: 2rem;
    width: auto;
    max-width: 90%;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.close {
    position: absolute;
    top: -50px;
    right: -40px;
    color: white;
    font-size: 3rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(0,0,0,0.5);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
    background: rgba(0,0,0,0.7);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.pagination a {
    padding: 0.8rem 1.2rem;
    border: 2px solid var(--primary-color);
    text-decoration: none;
    color: var(--primary-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.pagination a.active,
.pagination a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Footer */
footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

footer p {
    opacity: 0.8;
}

/* Loader for infinite scroll */
.loader {
    text-align: center;
    padding: 3rem;
    color: #7f8c8d;
    font-size: 1.2rem;
}

.loader::after {
    content: '⏳';
    display: block;
    font-size: 2rem;
    margin-top: 1rem;
    animation: spin 1s infinite linear;
}

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

.no-more {
    text-align: center;
    padding: 3rem;
    color: #7f8c8d;
    font-style: italic;
    font-size: 1.1rem;
}

/* Responsive design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.8rem;
    }
    
    .nav-links a {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .categories-grid,
    .galleries-grid,
    .related-grid,
    .gallery-images {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .modal-content {
        padding: 1rem;
    }
    
    .close {
        right: 0;
        top: -60px;
    }
    
    .pagination {
        gap: 0.5rem;
    }
    
    .pagination a {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .categories-grid,
    .galleries-grid,
    .related-grid,
    .gallery-images {
        grid-template-columns: 1fr;
    }
    
    .logo a {
        font-size: 1.5rem;
    }
    
    .category-info,
    .gallery-info {
        padding: 1rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Animation for page transitions */
main {
    animation: fadeIn 0.6s ease-in-out;
}

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

.gallery-categories {
    padding: 10px;
    background: #f8f9fa;
    border-radius: 5px;
    margin-bottom: 20px;
}

.gallery-images .card {
    transition: transform 0.2s;
    cursor: pointer;
}

.gallery-images .card:hover {
    transform: scale(1.05);
}

.image-stats {
    font-size: 0.8em;
    color: #666;
}

.social-share {
    text-align: center;
    padding: 20px 0;
}

.related-galleries .card {
    height: 100%;
}

.related-galleries .card-img-top {
    height: 430px;
    object-fit: cover;
}

/* Hover effects for cards */
.category-card::before,
.gallery-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.category-card:hover::before,
.gallery-card:hover::before {
    opacity: 0.05;
}