:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #e94560;
    --accent-hover: #ff6b6b;
    --text: #eee;
    --text-muted: #aaa;
    --bg: #0f0f1a;
    --card-bg: #1a1a2e;
    --shadow: 0 4px 20px rgba(0,0,0,0.4);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(233, 69, 96, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(22, 33, 62, 0.5) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(233, 69, 96, 0.2);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--accent);
}

.search-box {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem;
    padding-left: 2.5rem;
    border: 2px solid transparent;
    border-radius: 50px;
    background: var(--secondary);
    color: var(--text);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(233, 69, 96, 0.2);
}

.search-box::before {
    content: '🔍';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
}

nav {
    background: var(--secondary);
    padding: 0.75rem 2rem;
    overflow-x: auto;
}

nav ul {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 0.5rem;
    list-style: none;
    flex-wrap: wrap;
    justify-content: center;
}

nav button {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 25px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    white-space: nowrap;
}

nav button:hover {
    background: rgba(233, 69, 96, 0.2);
    color: var(--text);
}

nav button.active {
    background: var(--accent);
    color: white;
}

main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

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

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.3);
}

.card-image {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

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

.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 1rem;
}

.card:hover .card-overlay {
    opacity: 1;
}

.card-download {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-download:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.card-info {
    color: white;
}

.card-info h3 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--secondary);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.load-more {
    text-align: center;
    margin-top: 2rem;
}

.load-more button {
    padding: 1rem 3rem;
    border: none;
    border-radius: 50px;
    background: var(--accent);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.load-more button:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.load-more button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1rem;
}

.pagination button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: white;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.pagination button:hover:not(:disabled) {
    background: var(--accent-hover);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination .page-info {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 0 1rem;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 200;
    padding: 2rem;
    overflow-y: auto;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
    overflow-y: auto;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.5);
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.modal-close:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.modal-info {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    margin-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.modal-author {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    justify-content: flex-start;
}

.modal-author a {
    color: var(--accent);
    text-decoration: none;
}

.modal-author a:hover {
    text-decoration: underline;
}

.modal-downloads {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.modal-downloads button {
    padding: 0.6rem 1rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    min-width: 100px;
}

.modal-downloads button:hover {
    background: var(--accent-hover);
}

.modal-downloads button.secondary {
    background: var(--secondary);
}

.modal-downloads button.secondary:hover {
    background: var(--accent);
}

.source-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 0.5rem;
}

.source-badge.unsplash { background: #000; color: #fff; }
.source-badge.pexels { background: #05a081; color: #fff; }
.source-badge.pixabay { background: #89c402; color: #000; }

.related-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.related-title {
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 1rem;
    display: none;
}

.related-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.related-item {
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
    aspect-ratio: 16/10;
}

.related-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
}

.related-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

footer {
    text-align: center;
    padding: 2rem;
    background: var(--primary);
    margin-top: 3rem;
    color: var(--text-muted);
}

footer .footer-links {
    margin-top: 1rem;
    font-size: 0.85rem;
}

footer .footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin: 0 0.5rem;
}

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

.ad-container {
    text-align: center;
    margin: 1rem 0;
    min-height: 90px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ad-container-modal {
    margin: 1rem 0;
    min-height: 250px;
}

.adsbygoogle {
    background: var(--card-bg);
    border-radius: var(--radius);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    z-index: 50;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    nav {
        padding: 0.75rem 1rem;
    }
    
    main {
        padding: 1rem;
    }
    
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    .modal {
        padding: 1rem;
    }
    
    .modal-info {
        flex-direction: column;
        text-align: center;
    }
    
    .modal-downloads {
        justify-content: center;
    }
    
    .related-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}