:root {
    --primary-color: #f8f9fa;
    --secondary-color: #ffffff;
    --text-color: #2c3e50;
    --text-light: #7f8c8d;
    --accent-color: #3498db;
    --hover-color: #2980b9;
    --border-color: #e1e8ed;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--text-color);
    min-height: 100vh;
    line-height: 1.6;
}

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

header {
    background: var(--secondary-color);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent-color), var(--hover-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
}

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

.btn-secondary, .btn-admin, .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-secondary {
    background: var(--primary-color);
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

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

.btn-admin {
    background: #e74c3c;
    color: white;
}

.btn-admin:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

.albums-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.album-card {
    background: var(--secondary-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    cursor: pointer;
}

.album-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.album-cover {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: #f0f0f0;
}

.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.album-card:hover .album-cover img {
    transform: scale(1.05);
}

.album-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.album-overlay svg {
    color: white;
}

.album-count {
    position: absolute;
    bottom: 0.75rem;
    right: 0.75rem;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
}

.album-info {
    padding: 1.25rem;
}

.album-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.album-info p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.album-date {
    color: var(--text-light);
    font-size: 0.85rem;
}

.loading {
    text-align: center;
    padding: 4rem 2rem;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--secondary-color);
    border-radius: 16px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.empty-state svg {
    color: var(--text-light);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-top: 1rem;
}

.empty-state p {
    color: var(--text-light);
    max-width: 400px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--secondary-color);
    border-radius: 16px;
    width: 100%;
    max-width: 1200px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.viewer-content {
    max-height: 95vh;
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: var(--text-color);
}

.close-btn:hover {
    background: white;
    transform: rotate(90deg);
}

.viewer-header {
    padding: 2rem 2rem 1rem;
    background: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
}

.viewer-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.viewer-header p {
    color: var(--text-light);
}

#gallery-container {
    flex: 1;
    overflow: auto;
    background: #f8f9fa;
}

.image-gallery {
    background: #f8f9fa;
}

.image-gallery-slide img {
    max-height: 70vh;
    object-fit: contain;
}

.image-gallery-description {
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 1rem;
    font-size: 1rem;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header {
        padding: 1.5rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .albums-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        max-height: 100vh;
        border-radius: 0;
    }
}

/* Grid de miniaturas para Lightgallery - Masonry style */
.lightgallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    grid-auto-rows: 10px;
    gap: 8px;
    padding: 20px;
}

.lightgallery-grid a {
    display: block;
    cursor: pointer;
    border-radius: 6px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.lightgallery-grid a:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.lightgallery-grid a::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    transition: background 0.3s;
}

.lightgallery-grid a:hover::after {
    background: rgba(0, 0, 0, 0.1);
}

.gallery-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}