/* ===============================
   Artificial Cerebrum — Wallpaper Gallery
   Relies on theme.css for tokens + fonts.
================================== */

/* ── Body override for gallery page ─────────────────────────── */
body {
    margin: 0;
    padding: 0;
    background-color: var(--ac-bg);
    color: var(--ac-text);
    font-family: var(--font-body);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ── Page header ────────────────────────────────────────────── */
.gallery-header {
    width: 100%;
    max-width: 1200px;
    text-align: center;
    padding: 2.5rem 1rem 1rem;
}

.gallery-header h1 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    color: var(--ac-teal);
    text-shadow: 0 0 30px var(--ac-teal-glow);
    letter-spacing: 0.08em;
    margin: 0 0 0.4rem;
}

.gallery-header p {
    color: var(--ac-text-muted);
    font-family: var(--font-body);
    font-size: 1rem;
    margin: 0;
}

/* ── Filter container ───────────────────────────────────────── */
.filter-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    width: 100%;
    max-width: 1200px;
    padding: 0 1rem;
    /* theme.css `body > *:not(#neural-canvas)` has specificity 1-0-1 (ID in :not())
       which beats .filter-container (0-1-0) and clamps z-index back to 1.
       !important is required to escape that override. */
    position: relative;
    z-index: 100 !important;
}

.dropdown-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    max-width: 100%;
}

/* ── Dropdown ───────────────────────────────────────────────── */
.dropdown {
    position: relative;
    display: inline-block;
    /* z-index needed: .wallpaper-item uses backdrop-filter which creates a stacking
       context; items that come later in the DOM paint on top of earlier siblings even
       at z-index: auto. An explicit z-index here makes the dropdown stacking context
       outrank the card stacking contexts. */
    z-index: 10;
}

.dropdown-toggle {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: rgba(6, 14, 30, 0.7);
    color: var(--ac-text-muted);
    border: 1px solid var(--ac-teal-border);
    padding: 0.55rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.dropdown-toggle:hover {
    color: var(--ac-teal);
    border-color: rgba(0, 212, 255, 0.4);
    background: rgba(0, 212, 255, 0.06);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: rgba(6, 10, 20, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--ac-teal-border);
    border-radius: 10px;
    display: none;
    /* OLD: z-index: 1000 — wallpaper cards use backdrop-filter which creates a new
       stacking context, causing cards to render above the dropdown at z-index 1000.
       Fix: use a value high enough to clear all card stacking contexts. */
    z-index: 9000;
    min-width: 180px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 20px rgba(0,212,255,0.08);
    overflow: hidden;
}

.dropdown-menu.open {
    display: block;
    animation: dropFadeIn 0.15s ease;
}

@keyframes dropFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dropdown.open .dropdown-toggle {
    background: rgba(0, 212, 255, 0.12);
    color: var(--ac-teal);
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}

.dropdown-item {
    padding: 0.55rem 1rem;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ac-text-muted);
    transition: background 0.15s, color 0.15s;
    border-bottom: 1px solid rgba(0, 212, 255, 0.05);
}

.dropdown-item:last-child { border-bottom: none; }

.dropdown-item:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--ac-teal);
}

/* ── Filter buttons ─────────────────────────────────────────── */
.filter-button {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--ac-teal-border);
    border-radius: 999px;
    background: rgba(0, 212, 255, 0.05);
    color: var(--ac-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-button:hover {
    background: rgba(0, 212, 255, 0.12);
    border-color: rgba(0, 212, 255, 0.5);
    color: var(--ac-teal);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
}

/* ── Show All button ────────────────────────────────────────── */
.show-all-button {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.45rem 1rem;
    border: 1px solid var(--ac-gold-border);
    border-radius: 999px;
    background: rgba(212, 175, 55, 0.05);
    color: var(--ac-gold);
    cursor: pointer;
    transition: all 0.2s ease;
}

.show-all-button:hover {
    background: rgba(212, 175, 55, 0.12);
    border-color: rgba(212, 175, 55, 0.5);
    color: #fff;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.2);
}

/* ── Gallery grid ───────────────────────────────────────────── */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
    max-width: 1400px;
    padding: 0 1rem 3rem;
}

/* ── Wallpaper card ─────────────────────────────────────────── */
.wallpaper-item {
    background: rgba(6, 14, 30, 0.65);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: 16px;
    padding: 0.85rem;
    transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
    cursor: pointer;
}

.wallpaper-item:hover {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 28px rgba(0, 212, 255, 0.15), 0 8px 32px rgba(0,0,0,0.4);
    transform: translateY(-3px);
}

.wallpaper-frame {
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(0, 212, 255, 0.08);
    /* Normalise: all frames show the image at a consistent height */
    position: relative;
    /* Portrait default: 2:3 ratio container */
    padding-bottom: 150%;
    height: 0;
}

.wallpaper-frame img,
.wallpaper-item img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    border-radius: 10px;
    transition: transform 0.4s ease;
}

.wallpaper-item:hover .wallpaper-frame img,
.wallpaper-item:hover img {
    transform: scale(1.03);
}

/* ── Landscape card variant ─────────────────────────────────── */
/* galleryModal.js adds .wm-card-landscape when image is wider than tall */
.wm-card-landscape .wallpaper-frame {
    /* 16:9 ratio container */
    padding-bottom: 56.25%;
}

.wm-card-landscape img,
.wm-card-landscape .wallpaper-frame img {
    object-position: center center;
}

/* If gallery script puts img directly in .wallpaper-item without .wallpaper-frame */
.wallpaper-item:not(:has(.wallpaper-frame)) {
    display: flex;
    flex-direction: column;
}

.wallpaper-item:not(:has(.wallpaper-frame)) img {
    position: static;
    width: 100%;
    height: 220px;
    object-fit: cover;
    object-position: center top;
    border-radius: 10px;
    flex-shrink: 0;
}

.wm-card-landscape:not(:has(.wallpaper-frame)) img {
    height: 160px;
    object-position: center center;
}

.wallpaper-title {
    margin-top: 0.65rem;
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-align: center;
    color: var(--ac-teal);
}

.wallpaper-tags {
    margin-top: 0.4rem;
    text-align: center;
    font-size: 0.78rem;
    color: var(--ac-text-muted);
}

/* ── Tag pills ──────────────────────────────────────────────── */
.tag-pill {
    display: inline-block;
    background: rgba(0, 212, 255, 0.06);
    color: var(--ac-text-muted);
    border: 1px solid rgba(0, 212, 255, 0.12);
    padding: 0.2rem 0.5rem;
    margin: 2px;
    border-radius: 999px;
    font-size: 0.72rem;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    z-index: 2;
}

.tag-pill:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: rgba(0, 212, 255, 0.4);
    color: var(--ac-teal);
}

/* ── Hidden state ───────────────────────────────────────────── */
.hidden { display: none !important; }

/* ════════════════════════════════════════
   MODAL
════════════════════════════════════════ */
#wm-overlay {
    /* Force out of flex flow — position fixed must ignore parent flex layout */
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    /* OLD: inset: 0 — unreliable inside flex body */
    z-index: 9999;
    background: rgba(4, 8, 16, 0.92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
    padding: 1rem;
    /* Force own compositing layer above everything */
    isolation: isolate;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

#wm-overlay.wm-open {
    opacity: 1;
    pointer-events: all;
}

#wm-box {
    position: relative;
    background: rgba(6, 14, 30, 0.98);
    border: 1px solid rgba(0, 212, 255, 0.18);
    border-radius: 20px;
    box-shadow: 0 0 60px rgba(0,0,0,0.7), 0 0 30px rgba(0,212,255,0.08);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    /* Portrait default — max 80vh tall */
    max-height: 90vh;
    max-width: min(500px, 92vw);
    width: 100%;
    transform: scale(0.95);
    transition: transform 0.22s ease;
}

#wm-overlay.wm-open #wm-box {
    transform: scale(1);
}

/* Landscape modal — wider, shorter */
#wm-box.wm-landscape {
    max-width: min(900px, 96vw);
    max-height: 90vh;
}

/* ── Close button ───────────────────────────────────────────── */
#wm-close {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(4, 8, 16, 0.85);
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: rgba(200, 220, 240, 0.7);
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.18s ease;
    backdrop-filter: blur(8px);
}

#wm-close:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: rgba(0, 212, 255, 0.5);
    color: #fff;
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}

/* ── Image wrapper ──────────────────────────────────────────── */
#wm-img-wrap {
    /* OLD: flex: 1; min-height: 0;
       Firefox does not treat max-height on a flex container as a definite size,
       so flex-basis: 0 collapses this to 0 height and overflow: hidden hides the image.
       Fix: explicit height so the wrap always has visible space regardless of browser. */
    height: calc(90vh - 60px);
    flex-shrink: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.3);
}

#wm-img {
    display: block;
    max-width: 100%;
    max-height: 75vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 0;
}

/* ── Footer bar ─────────────────────────────────────────────── */
#wm-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.1rem;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    background: rgba(4, 8, 16, 0.9);
    flex-shrink: 0;
    gap: 1rem;
}

#wm-title {
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ac-teal);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

/* ── Download button ────────────────────────────────────────── */
#wm-download {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--font-display);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.6rem 1.1rem;
    border-radius: 8px;
    border: 1px solid rgba(212, 175, 55, 0.4);
    background: rgba(212, 175, 55, 0.08);
    color: var(--ac-gold);
    flex-shrink: 0;
    transition: all 0.2s ease;
    white-space: nowrap;
}

#wm-download svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

#wm-download:hover {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--ac-gold);
    color: #fff;
    box-shadow: 0 0 16px rgba(212, 175, 55, 0.3);
    transform: translateY(-1px);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 600px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    .gallery-header h1 {
        font-size: 1.5rem;
    }
    #wm-box {
        max-width: 98vw;
        max-height: 95vh;
        border-radius: 14px;
    }
    #wm-title {
        font-size: 0.62rem;
    }
}