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

:root {
    --bg:           #0d0d0e;
    --ink:          #f3f1ec;
    --muted:        rgba(243,241,236,.5);
    --accent:       #c1552c;
    --accent-soft:  rgba(193,85,44,.16);
    --line:         rgba(243,241,236,.14);
    --line-strong:  rgba(243,241,236,.32);
    --panel-bg:     rgba(13,13,14,.94);
    --glass:        rgba(255,255,255,.05);
    --ease:         cubic-bezier(.4,0,.2,1);
    --mono:         ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
    --sans:         system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

html, body {
    height: 100%;
    background: var(--bg);
    font-family: var(--sans);
    overflow: hidden;
    color: var(--ink);
}

/* ── INTRO ──────────────────────────────────────────────── */
#intro {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: grid;
    place-items: center;
    z-index: 999;
    opacity: 1;
    transition: opacity .8s var(--ease);
    pointer-events: none;
}
#intro.hidden { opacity: 0; }
#intro-mark { text-align: center; }
#intro-title {
    font-size: clamp(1.6rem, 5vw, 3.2rem);
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--ink);
    opacity: 0;
    transform: translateY(10px);
    animation: fadeUp .7s .15s var(--ease) forwards;
}
#intro-rule {
    width: 0;
    height: 2px;
    background: var(--accent);
    margin: 18px auto;
    animation: ruleGrow .7s .5s var(--ease) forwards;
}
#intro-sub {
    font-family: var(--mono);
    font-size: clamp(.7rem, 1.4vw, .85rem);
    letter-spacing: .1em;
    color: var(--muted);
    opacity: 0;
    transform: translateY(8px);
    animation: fadeUp .7s .65s var(--ease) forwards;
}
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes ruleGrow { to { width: 64px; } }

/* ── STAGE ──────────────────────────────────────────────── */
.stage {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    opacity: 0;
    transition: opacity .6s var(--ease);
}
.stage.visible { opacity: 1; }

/* ── FRAME ──────────────────────────────────────────────── */
.frame {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
    background: #000;
}

.frame img,
.frame video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    z-index: 1;
    opacity: 0;
    transition: transform .65s var(--ease), opacity .65s var(--ease);
}

/* ── BLURRED BACKGROUND ────────────────────────────────── */
#bg-blur {
    position: absolute;
    inset: -40px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(28px) brightness(.5) saturate(1.3);
    z-index: 0;
}

/* ── VIGNETTE ───────────────────────────────────────────── */
.vignette {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 70% at 50% 50%, transparent 55%, rgba(0,0,0,.55) 100%),
        linear-gradient(to bottom, rgba(0,0,0,.35) 0%, transparent 18%, transparent 75%, rgba(0,0,0,.55) 100%);
    pointer-events: none;
    z-index: 2;
}

/* ── CORNER MARKS (blueprint-style crop marks) ─────────── */
.corner-mark {
    position: absolute;
    width: 20px;
    height: 20px;
    z-index: 6;
    pointer-events: none;
    opacity: .5;
}
.corner-mark.tl { top: 18px;    left: 18px;  border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.corner-mark.tr { top: 18px;    right: 18px; border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.corner-mark.bl { bottom: 18px; left: 18px;  border-bottom: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.corner-mark.br { bottom: 18px; right: 18px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }

/* ── PROGRESS BAR ───────────────────────────────────────── */
#progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--accent);
    z-index: 10;
    transition: width linear;
    opacity: .8;
}

/* ── COUNTER ────────────────────────────────────────────── */
#counter {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 10;
    font-family: var(--mono);
    font-size: .78rem;
    letter-spacing: .08em;
    color: var(--muted);
}

/* ── NAV ARROWS ─────────────────────────────────────────── */
.arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 48px;
    height: 48px;
    border-radius: 6px;
    background: var(--glass);
    border: 1px solid var(--line);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--ink);
    font-size: 22px;
    display: grid;
    place-items: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity .25s, background .2s, border-color .2s;
    user-select: none;
}
.arrow#prev { left: 20px; }
.arrow#next { right: 20px; }
.frame:hover .arrow { opacity: .7; }
.arrow:hover { opacity: 1 !important; background: rgba(255,255,255,.1); border-color: var(--line-strong); }

/* ── TOOLBAR ────────────────────────────────────────────── */
#toolbar {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    display: flex;
    gap: 8px;
}

.tool-btn {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    background: var(--glass);
    border: 1px solid var(--line);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--ink);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background .2s, opacity .2s, border-color .2s;
    opacity: .75;
    font-size: 16px;
}
.tool-btn:hover { opacity: 1; background: rgba(255,255,255,.1); border-color: var(--line-strong); }
.tool-btn.active { opacity: 1; color: var(--accent); border-color: var(--accent); }

/* ── SORT POPOVER ───────────────────────────────────────── */
#sort-pop {
    position: fixed;
    top: 68px;
    right: 20px;
    width: 200px;
    background: var(--panel-bg);
    border: 1px solid var(--line);
    border-radius: 8px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 14px 16px 12px;
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity .2s var(--ease), transform .2s var(--ease);
}
#sort-pop.open { opacity: 1; pointer-events: auto; transform: translateY(0); }
#sort-pop h4 {
    font-size: .68rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
    font-weight: 600;
}
.sort-opt {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 2px;
    font-size: .82rem;
    color: rgba(243,241,236,.65);
    cursor: pointer;
    transition: color .15s;
    user-select: none;
}
.sort-opt:hover { color: var(--ink); }
.sort-opt.active { color: var(--accent); }
.sort-opt::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 1px;
    border: 1.5px solid currentColor;
    flex-shrink: 0;
    transition: background .15s;
}
.sort-opt.active::before { background: var(--accent); }

/* ── GRID VIEW ──────────────────────────────────────────── */
#grid-view {
    position: fixed;
    inset: 0;
    background: rgba(9,9,10,.97);
    z-index: 190;
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transition: opacity .15s var(--ease);
}
#grid-view.open { opacity: 1; pointer-events: auto; }

#grid-inner {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    align-content: start;
    gap: 14px;
    padding: 80px 32px 40px;
    min-height: 100%;
}

#grid-view.open .thumb { animation: thumbIn .35s var(--ease) both; }
@keyframes thumbIn { from { opacity: 0; } to { opacity: 1; } }

.thumb {
    aspect-ratio: 1;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
    cursor: pointer;
    position: relative;
    transition: box-shadow .2s var(--ease);
    box-shadow: 0 0 0 0 transparent;
}
.thumb:hover { box-shadow: 0 0 0 2px var(--accent); }
.thumb img, .thumb video { width: 100%; height: 100%; object-fit: cover; display: block; }

.thumb .num-badge {
    position: absolute;
    top: 6px;
    left: 6px;
    font-family: var(--mono);
    font-size: .65rem;
    letter-spacing: .02em;
    color: var(--ink);
    background: rgba(0,0,0,.55);
    border-radius: 3px;
    padding: 1px 5px;
    pointer-events: none;
    z-index: 2;
}

.thumb .play-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(0,0,0,.55);
    display: grid;
    place-items: center;
    pointer-events: none;
    opacity: .85;
    transition: opacity .2s;
    z-index: 2;
}
.thumb:hover .play-badge { opacity: 0; }
.thumb.current { outline: 2px solid var(--accent); outline-offset: 2px; }

#grid-close {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 191;
    background: var(--accent-soft);
    border: 1px solid rgba(193,85,44,.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--accent);
    padding: 8px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    display: none;
    transition: background .2s, border-color .2s;
    font-family: var(--sans);
}
#grid-close.open { display: block; }
#grid-close:hover { background: rgba(193,85,44,.32); border-color: var(--accent); }

/* ── KEYBOARD HINT ──────────────────────────────────────── */
#kb-hint {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--mono);
    font-size: .68rem;
    letter-spacing: .06em;
    color: var(--muted);
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
    white-space: nowrap;
    z-index: 5;
}
#kb-hint.show { opacity: 1; }

/* ── CAPTION ─────────────────────────────────────────────── */
#caption {
    position: absolute;
    bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    max-width: clamp(220px, 88vw, 860px);
    text-align: center;
    font-size: clamp(0.7rem, 2.5vw, 0.9rem);
    line-height: 1.5;
    color: var(--ink);
    opacity: 0;
    transition: opacity .45s var(--ease);
    padding: 6px 14px;
    background: rgba(10,10,10,.7);
    border-radius: 4px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    pointer-events: none;
    white-space: pre-line;
    max-height: 25vh;
    overflow-y: auto;
    word-break: break-word;
}
#caption.has-caption { opacity: 1; }

@media (max-width: 600px) {
    #kb-hint { display: none; }
    .arrow { width: 44px; height: 44px; opacity: .55 !important; }
    #toolbar { top: 14px; right: 14px; }
    #grid-view { padding: 0; }
    #grid-inner { padding: 70px 14px 30px; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(130px,1fr)); }
    @supports (-webkit-touch-callout: none) {
        #caption { bottom: calc(120px + env(safe-area-inset-bottom, 0px)); }
    }
}