/* ========================================
   Gallery — PaperMod Design Language
   ======================================== */

/* ---------- Page Layout ---------- */
/* Widen the main container for gallery pages */
.main:has(.gallery-page-content) {
    max-width: calc(var(--nav-width) + var(--gap) * 2);
}

.gallery-page-content {
    max-width: 100%;
}

/* ---------- Album Section ---------- */
.gallery-album {
    background: var(--entry);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--gap);
    margin-bottom: var(--gap);
    transition: transform 0.1s;
}

.gallery-album:active {
    transform: scale(0.99);
}

.gallery-album-header {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
}

.gallery-album-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.3;
}

.gallery-album-count {
    font-size: 13px;
    color: var(--secondary);
    flex-shrink: 0;
}

.gallery-album-desc {
    color: var(--secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--content-gap);
}

/* ---------- Image Grid ---------- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: calc(var(--content-gap) * 0.5);
}

.gallery-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    background: var(--code-bg);
    border: 1px solid var(--border);
    transition: transform 0.1s;
}

[data-theme="dark"] .gallery-card {
    background: var(--tertiary);
}

.gallery-card:active {
    transform: scale(0.96);
}

.gallery-card-img {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

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

.gallery-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    transition: background 0.2s ease;
    pointer-events: none;
    border-radius: inherit;
}

.gallery-card:hover::after {
    background: rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .gallery-card:hover::after {
    background: rgba(0, 0, 0, 0.2);
}

/* ---------- Empty State ---------- */
.gallery-empty {
    text-align: center;
    padding: calc(var(--gap) * 3) 0;
    color: var(--secondary);
}

.gallery-empty svg {
    margin: 0 auto var(--gap);
    opacity: 0.4;
}

.gallery-empty p {
    font-size: 16px;
}

/* ---------- Lightbox ---------- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

[data-theme="dark"] .lightbox-backdrop {
    background: rgba(0, 0, 0, 0.92);
}

.lightbox-body {
    position: relative;
    max-width: 92vw;
    max-height: 88vh;
    z-index: 1;
}

.lightbox-body img {
    max-width: 92vw;
    max-height: 88vh;
    object-fit: contain;
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Lightbox Buttons */
.lightbox-btn {
    position: absolute;
    z-index: 2;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: background 0.2s, transform 0.1s;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    padding: 0;
}

.lightbox-btn:hover {
    background: rgba(255, 255, 255, 0.22);
}

.lightbox-btn:active {
    transform: scale(0.92);
}

.lightbox-btn svg {
    width: 20px;
    height: 20px;
}

.lightbox-close-btn {
    top: 20px;
    right: 20px;
}

.lightbox-prev-btn {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-prev-btn:active {
    transform: translateY(-50%) scale(0.92);
}

.lightbox-next-btn {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next-btn:active {
    transform: translateY(-50%) scale(0.92);
}

.lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    background: rgba(0, 0, 0, 0.4);
    padding: 4px 12px;
    border-radius: 20px;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    :root {
        --gap: 14px;
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .gallery-album {
        padding: 14px;
    }

    .gallery-album-title {
        font-size: 20px;
    }

    .lightbox-btn {
        width: 38px;
        height: 38px;
    }

    .lightbox-btn svg {
        width: 16px;
        height: 16px;
    }

    .lightbox-prev-btn {
        left: 10px;
    }

    .lightbox-next-btn {
        right: 10px;
    }

    .lightbox-close-btn {
        top: 10px;
        right: 10px;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-album-title {
        font-size: 18px;
    }
}