/* Global Styles */
* {
    box-sizing: border-box;
}

/* Header */
.app-header {
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 13, 13, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#site-title {
    font-weight: 600;
    margin: 0;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

/* Main Content Area */
#content-area {
    padding: var(--space-xl);
    min-height: 80vh;
}

/* Grid Layouts */
.album-grid,
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    cursor: pointer;
    border: 1px solid var(--border-color);
    position: relative;
    aspect-ratio: 4/3;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: var(--text-secondary);
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    padding: var(--space-lg);
    transform: translateY(20px);
    opacity: 0.8;
    transition: all var(--transition-medium);
}

.card:hover .card-overlay {
    transform: translateY(0);
    opacity: 1;
}

.card-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.card-desc {
    margin-top: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-medium);
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox.hidden {
    display: none;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.lightbox-info {
    margin-top: var(--space-md);
    text-align: center;
}

.lightbox-btn {
    position: absolute;
    background: transparent;
    border: none;
    color: white;
    font-size: 3rem;
    cursor: pointer;
    padding: var(--space-md);
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.lightbox-btn:hover {
    opacity: 1;
}

.lightbox-btn.close {
    top: var(--space-md);
    right: var(--space-md);
    z-index: 1010;
}

.lightbox-btn.prev {
    left: var(--space-md);
}

.lightbox-btn.next {
    right: var(--space-md);
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    #content-area {
        padding: var(--space-md);
    }

    .app-header {
        padding: var(--space-md);
    }

    .album-grid,
    .image-grid {
        grid-template-columns: 1fr;
    }
}