/* ── Gallery header ─────────────────────────────────────────────────────── */
.gallery-header {
    text-align: center;
    padding: clamp(3rem, 8vh, 5rem) 1.5rem clamp(1.5rem, 3vh, 2rem);
}
.back-link {
    display: inline-block;
    color: var(--muted);
    text-decoration: none;
    font-size: clamp(0.68rem, 1.2vw, 0.8rem);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: clamp(1.2rem, 3vh, 2rem);
    transition: opacity 0.2s;
}
.back-link:hover { opacity: 0.6; }
.gallery-title {
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}
.gallery-subtitle {
    margin-top: 0.8rem;
    font-size: clamp(0.8rem, 1.4vw, 0.98rem);
    font-weight: 500;
    opacity: 0.85;
}

/* ── Tabs ───────────────────────────────────────────────────────────────── */
.edition-tabs, .day-tabs {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    padding: 0 1.5rem;
}
.day-tabs { margin-top: 0.8rem; }

.tab {
    background: none;
    border: 1px solid var(--faint);
    color: var(--muted);
    padding: 0.5rem 1.3rem;
    cursor: pointer;
    font-family: 'Cinzel', serif;
    font-size: clamp(0.72rem, 1.3vw, 0.85rem);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.tab:hover { color: var(--ink); border-color: var(--ink); }
.tab.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.day-tab { padding: 0.4rem 1.1rem; font-size: clamp(0.66rem, 1.2vw, 0.78rem); opacity: 0.9; }

/* ── Grid ───────────────────────────────────────────────────────────────── */
.gallery-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: clamp(2rem, 5vh, 3.5rem) clamp(1rem, 3vw, 2rem) clamp(3rem, 8vh, 5rem);
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: clamp(6px, 1vw, 12px);
}

.photo-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--surface);
    cursor: pointer;
    border: none;
    padding: 0;
    display: block;
}
.photo-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    opacity: 0;
    transform: scale(1.03);
    transition: opacity 0.5s ease, transform 6s ease;
}
.photo-thumb img.loaded { opacity: 1; }
.photo-thumb:hover img { transform: scale(1.08); }

.grid-sentinel { height: 1px; }

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    opacity: 0.6;
    font-size: 0.9rem;
}

/* ── Lightbox ───────────────────────────────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(20, 6, 6, 0.94);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease;
}
.lightbox.open { opacity: 1; visibility: visible; }

.lb-figure {
    position: relative;
    max-width: 92vw;
    max-height: 86vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lb-figure img {
    max-width: 92vw;
    max-height: 86vh;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.2s ease;
}
.lb-figure img.loaded { opacity: 1; }

.lb-spinner {
    position: absolute;
    width: 28px;
    height: 28px;
    border: 2px solid rgba(255,255,255,0.25);
    border-top-color: #fff;
    border-radius: 50%;
    animation: lb-spin 0.8s linear infinite;
}
.lb-spinner[hidden] { display: none; }
@keyframes lb-spin { to { transform: rotate(360deg); } }

.lb-close, .lb-nav {
    position: absolute;
    background: none;
    border: none;
    color: #fdf3e4;
    cursor: pointer;
    opacity: 0.75;
    transition: opacity 0.2s;
}
.lb-close:hover, .lb-nav:hover { opacity: 1; }

.lb-close { top: clamp(0.8rem, 2vh, 1.6rem); right: clamp(1rem, 3vw, 2rem); font-size: 2.2rem; line-height: 1; }
.lb-nav { top: 50%; transform: translateY(-50%); font-size: 1.6rem; padding: 0.8rem; }
.lb-prev { left: clamp(0.4rem, 2vw, 1.5rem); }
.lb-next { right: clamp(0.4rem, 2vw, 1.5rem); }

.lb-counter {
    position: absolute;
    bottom: clamp(0.8rem, 2vh, 1.6rem);
    left: 50%;
    transform: translateX(-50%);
    color: rgba(253, 243, 228, 0.75);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.gallery-footer {
    text-align: center;
    padding: clamp(2rem, 5vh, 3rem) 1.5rem;
    border-top: 1px solid var(--hairline);
}
.footer-back {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.footer-back:hover { opacity: 0.6; }

/* ── Mobile ─────────────────────────────────────────────────────────────── */
@media (max-width: 680px) {
    .photo-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 5px; }
    .lb-nav { font-size: 1.2rem; padding: 0.6rem; }
    .lb-close { font-size: 1.8rem; }
}