/* ── Reset ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Variables ──────────────────────────────────────────────────────────────── */
:root {
    --bg:       #0f0f0f;
    --surface:  #1a1a1a;
    --border:   #2a2a2a;
    --text:     #e2e2e2;
    --muted:    #787878;
    --accent:   #c8a96e;   /* warm gold — complements wildlife/nature photography */
    --radius:   5px;
}

/* ── Base ───────────────────────────────────────────────────────────────────── */
body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 2rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

header h1 {
    flex: 1;
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--text);
}

.back {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
}
.back:hover { text-decoration: underline; }

.count {
    color: var(--muted);
    font-size: 0.85rem;
    white-space: nowrap;
}

/* ── Main content ───────────────────────────────────────────────────────────── */
main {
    padding: 2rem;
    max-width: 1600px;
    margin: 0 auto;
}

.empty {
    color: var(--muted);
    text-align: center;
    padding: 5rem 2rem;
    font-size: 0.95rem;
}

/* ── Album grid ─────────────────────────────────────────────────────────────── */
.album-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.album-card {
    display: block;
    text-decoration: none;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.15s ease, border-color 0.15s ease;
}
.album-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.album-cover {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #000;
}
.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.2s ease;
}
.album-card:hover .album-cover img {
    transform: scale(1.04);
}
.album-cover.no-cover {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-size: 0.85rem;
}

.album-info {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.7rem 0.9rem;
}
.album-title {
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 75%;
}
.album-count {
    color: var(--muted);
    font-size: 0.8rem;
    flex-shrink: 0;
}

/* ── Photo grid ─────────────────────────────────────────────────────────────── */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.6rem;
}

.photo-thumb {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--radius);
    cursor: pointer;
    background: #000;
    border: 1px solid var(--border);
    transition: border-color 0.15s ease;
}
.photo-thumb:hover {
    border-color: var(--accent);
}
.photo-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.2s ease, opacity 0.2s;
}
.photo-thumb:hover img {
    transform: scale(1.04);
}

/* ── Lightbox ───────────────────────────────────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.96);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lightbox.hidden { display: none; }

.lb-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 94vw;
    max-height: 96vh;
    /* Prevent click bubbling to backdrop */
}

#lb-img {
    display: block;
    max-width: 100%;
    max-height: calc(96vh - 56px);
    object-fit: contain;
    border-radius: 3px;
    transition: opacity 0.2s ease;
}

.lb-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0.5rem 0.25rem 0;
    gap: 1rem;
}
#lb-pos {
    color: var(--muted);
    font-size: 0.82rem;
    flex-shrink: 0;
}
#lb-name {
    color: var(--muted);
    font-size: 0.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    text-align: center;
}
.lb-dl-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.82rem;
    flex-shrink: 0;
    white-space: nowrap;
}
.lb-dl-link:hover { text-decoration: underline; }

/* Lightbox buttons */
.lb-btn {
    position: fixed;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    border-radius: 4px;
    line-height: 1;
    transition: background 0.15s, border-color 0.15s;
    font-size: 1rem;
}
.lb-btn:hover {
    background: rgba(200, 169, 110, 0.15);
    border-color: var(--accent);
}

.lb-close {
    top: 1rem;
    right: 1rem;
    padding: 0.45rem 0.65rem;
    font-size: 1rem;
}
.lb-prev {
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.8rem 1rem;
    font-size: 2rem;
}
.lb-next {
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.8rem 1rem;
    font-size: 2rem;
}

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
    main     { padding: 1rem; }
    header   { padding: 1rem; }
    header h1 { font-size: 1.05rem; }

    .album-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 0.75rem;
    }
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.4rem;
    }
    .lb-prev { left: 0.4rem; padding: 0.6rem 0.75rem; }
    .lb-next { right: 0.4rem; padding: 0.6rem 0.75rem; }
}