/* ── Shams3D Design System — CSS Variables ──────────────── */
:root {
    --color-bg:          #f6f4ee;
    --color-text:        #1a1916;
    --color-text-sec:    #857f74;
    --color-accent:      #2563eb;
    --color-accent-dark: #1d4ed8;
    --color-surface:     #e8e2d8;
    --color-highlight:   #ffec99;
    --color-border:      rgba(26,25,22,0.32);
    --color-border-lt:   rgba(26,25,22,0.14);
    --shadow-card:       4px 4px 0 var(--color-text);
    --shadow-hover:      6px 6px 0 var(--color-accent);
    --font:              'Inter Tight', -apple-system, system-ui, sans-serif;
    --font-hand:         'Kalam', cursive;
    --font-script:       'Caveat', cursive;
    --font-mono:         'JetBrains Mono', monospace;
    --paper-texture:     url('/assets/images/paper-bg.png');
    --radius-btn:        8px;
    --radius-badge:      14px;
    --radius-card:       14px;
    --radius-lg:         18px;
    --radius-circle:     50%;
    --viewer-panel-right: 14px;
    --viewer-panel-top:   68px;
    --viewer-panel-width: 300px;
    --viewer-panel-gap:   18px;
    --viewer-light-width: 280px;
    --viewer-framebar-width: 304px;
    --kf-cam:            #2563eb;
    --kf-obj:            #0f766e;
}

@media (min-width: 1280px) {
    :root {
        --viewer-panel-width: 320px;
        --viewer-light-width: 300px;
    }
}

@media (max-width: 1100px) {
    :root {
        --viewer-panel-right: 12px;
        --viewer-panel-width: 280px;
        --viewer-panel-gap:   14px;
        --viewer-light-width: 260px;
    }
}

/* ── Scroll/load reveal ──────────────────────────────────────────── */
.zr-reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .55s cubic-bezier(.2,.8,.2,1), transform .55s cubic-bezier(.2,.8,.2,1);
    transition-delay: calc(var(--i, 0) * 70ms);
    will-change: opacity, transform;
}
.zr-reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    .zr-reveal { opacity: 1; transform: none; transition: none; }
}

/* ── Reset ─────────────────────────────────────────────────────── */
* { margin:0; padding:0; box-sizing:border-box; }
html {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

/* ── Body ──────────────────────────────────────────────────────── */
body {
    background:
        radial-gradient(circle at 20% 10%, rgba(255,236,153,0.16), transparent 28%),
        radial-gradient(circle at 80% 18%, rgba(37,99,235,0.06), transparent 24%),
        var(--color-bg) var(--paper-texture) repeat;
    background-size: auto, auto, 1100px auto;
    color: var(--color-text);
    font-family: var(--font);
    overflow: hidden;
    height: 100vh;
    width: 100%;
    max-width: 100%;
    user-select: none;
}
body::after {
    content:'';
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:9999;
    opacity:0.025;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}
@media (max-width: 760px) {
    body::after { display: none; }
}
body.bg-checker {
    background-image:
        linear-gradient(45deg, rgba(26,25,22,0.05) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(26,25,22,0.05) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(26,25,22,0.05) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(26,25,22,0.05) 75%),
        radial-gradient(circle at 20% 10%, rgba(255,236,153,0.16), transparent 28%),
        radial-gradient(circle at 80% 18%, rgba(37,99,235,0.06), transparent 24%),
        var(--paper-texture);
    background-size: 24px 24px, 24px 24px, 24px 24px, 24px 24px, auto, auto, 1100px auto;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0, 0 0, 0 0, 0 0;
    background-color: var(--color-bg);
}

#canvas-container { position:fixed; inset:0; }
canvas { display:block; }

/* ── 9:16 Reels overlay ─────────────────────────────────────────── */
#reels-overlay { display:none; position:fixed; inset:0; z-index:5; pointer-events:none; }
.reels-toggle-row { display:flex; align-items:center; gap:8px; margin-top:8px; }
.reels-toggle-btn {
    padding:5px 12px;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:10px; font-weight:700; font-family: var(--font);
    cursor:pointer; letter-spacing:.3px; transition:all .14s;
}
.reels-toggle-btn:hover { background:var(--color-surface); }
.reels-toggle-btn.on {
    background: var(--color-accent);
    color: #ffffff;
}

/* ── Restoring session — hide landing immediately, no flash ─────── */
html.restoring #drop-overlay { display: none !important; }
html.restoring #loading { display: flex !important; }

/* ── Drop overlay ───────────────────────────────────────────────── */
#drop-overlay {
    position:fixed; inset:0;
    display:flex; flex-direction:column;
    z-index:100;
}
#file-input {
    position:absolute;
    width:1px;
    height:1px;
    opacity:0;
    pointer-events:none;
}

/* ── Top bar ────────────────────────────────────────────────────── */
#topbar {
    position:fixed; top:0; left:0; right:0; height:56px;
    background: var(--color-bg);
    box-shadow: rgba(0,0,0,0.08) 0px 1px 0px;
    display:flex; align-items:center;
    padding:0 14px; gap:7px; z-index:50;
}
.logo { font-size:14px; font-weight:700; color: var(--color-text); }
.logo span { color: var(--color-accent); }
#model-name {
    font-size:12px; color: var(--color-text-sec);
    overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
    max-width:180px; margin-left:6px;
}
.spacer { flex:1; }
.top-btn {
    padding:4px 11px;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:11px; font-weight:500; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
.top-btn:hover { background:var(--color-surface); }
#cinematic-btn,
#lighting-btn,
#panel-btn {
    padding:4px 13px;
    background: var(--color-bg);
    border: 1px solid rgba(0,0,0,0.12);
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:11px; font-weight:600; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
#cinematic-btn:hover, #lighting-btn:hover, #panel-btn:hover { background: var(--color-surface); }
#cinematic-btn.on, #lighting-btn.on, #panel-btn.on { border-color: var(--color-accent); color: var(--color-accent); }

/* ── Keyframe sidebar ───────────────────────────────────────────── */
#kf-strip {
    position:fixed;
    top:var(--viewer-panel-top);
    bottom:86px;
    left:14px;
    width:var(--viewer-framebar-width);
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    padding:12px;
    z-index:50;
    overflow:hidden;
}
#kf-strip.show { display:flex; }

.kf-strip-header,
.kf-add-row,
.kf-xform-row {
    flex-shrink:0;
}
.kf-strip-header {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
}
.kf-label {
    font-size:10px;
    font-weight:700;
    color: var(--color-text-sec);
    letter-spacing:0.08em;
    text-transform:uppercase;
    white-space:nowrap;
}
.kf-add-row,
.kf-xform-row {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:6px;
}
.kf-play-btn {
    min-width:58px;
    justify-content:center;
    padding:6px 9px;
}

#kf-frames {
    position:relative;
    display:flex;
    flex:1 1 auto;
    min-height:0;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    overflow-y:auto;
    overflow-x:hidden;
    padding:2px 3px 6px 0;
    scrollbar-width:thin;
    scrollbar-color: var(--color-text) transparent;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
    scroll-snap-type: y proximity;
}
#kf-frames::-webkit-scrollbar { width:8px; }
#kf-frames::-webkit-scrollbar-track { background:transparent; }
#kf-frames::-webkit-scrollbar-thumb {
    background: var(--color-text);
    border-radius: 999px;
    border: 2px solid var(--color-bg);
}
#kf-frames::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }
#kf-frames .kf-frame { scroll-snap-align: start; }
#kf-frames.is-empty::before {
    content:'Add Cam or Obj';
    display:flex;
    align-items:center;
    justify-content:center;
    min-height:82px;
    padding:10px;
    border:1.5px dashed var(--color-border-lt);
    border-radius:var(--radius-btn);
    color:var(--color-text-sec);
    font-size:11px;
    font-weight:700;
    text-align:center;
}

.kf-frame {
    position:relative;
    flex-shrink:0;
    width:100%;
    height:74px;
    border-radius: var(--radius-btn);
    overflow:hidden;
    border:2px solid var(--color-border);
    cursor:pointer;
    transition: border-color .2s cubic-bezier(.2,.8,.2,1), box-shadow .25s cubic-bezier(.2,.8,.2,1), transform .25s cubic-bezier(.2,.8,.2,1);
    background: var(--color-surface);
    box-shadow:2px 2px 0 var(--color-text);
}
.kf-frame::after {
    content:'';
    position:absolute;
    inset:auto 0 0 0;
    height:38px;
    background:linear-gradient(to top, rgba(0,0,0,0.58), transparent);
    pointer-events:none;
}
.kf-frame:hover {
    border-color: var(--color-accent);
    transform:translate(-1px, -1px);
    box-shadow:3px 3px 0 var(--color-text);
}
.kf-frame.active { border-color: var(--color-accent); }
.kf-frame-cam { border-color: color-mix(in srgb, var(--kf-cam) 40%, var(--color-border)); }
.kf-frame-obj { border-color: color-mix(in srgb, var(--kf-obj) 40%, var(--color-border)); }
.kf-frame img {
    width:100%;
    height:100%;
    display:block;
    object-fit:cover;
}
.kf-frame-fallback {
    display:flex;
    align-items:center;
    justify-content:center;
    width:100%;
    height:100%;
    background:linear-gradient(135deg, rgba(26,25,22,0.18), rgba(26,25,22,0.04));
    color:rgba(26,25,22,0.42);
    font-family:var(--font-mono);
    font-size:24px;
    font-weight:700;
}
.kf-type-badge,
.kf-link-type {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:19px;
    height:19px;
    border-radius:5px;
    color:#fff;
    font-family:var(--font-mono);
    font-size:10px;
    font-weight:700;
    line-height:1;
    box-shadow:1.5px 1.5px 0 rgba(26,25,22,0.9);
}
.kf-type-badge {
    position:absolute;
    left:6px;
    top:6px;
    z-index:2;
}
.kf-type-cam { background:var(--kf-cam); }
.kf-type-obj { background:var(--kf-obj); }

.kf-frame.is-playing {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(37,99,235,0.32), 3px 3px 0 var(--color-text), 0 0 18px 4px rgba(37,99,235,0.42);
    transform: translate(-1px, -1px) scale(1.02);
    animation: kf-playing-pulse 1.4s ease-in-out infinite;
    z-index: 2;
}
.kf-frame.is-playing img { filter: saturate(1.15) brightness(1.03); }
@keyframes kf-playing-pulse {
    0%, 100% { box-shadow: 0 0 0 2px rgba(37,99,235,0.32), 3px 3px 0 var(--color-text), 0 0 18px 4px rgba(37,99,235,0.42); }
    50%      { box-shadow: 0 0 0 2px rgba(37,99,235,0.5),  3px 3px 0 var(--color-text), 0 0 24px 8px rgba(37,99,235,0.52); }
}
@media (prefers-reduced-motion: reduce) {
    .kf-frame.is-playing { animation: none; transform: none; }
}

/* Per-segment editor trigger */
.kf-link {
    flex-shrink: 0;
    display:grid;
    grid-template-columns:auto auto minmax(0, 1fr) auto;
    align-items:center;
    gap:6px;
    width:100%;
    height:38px;
    padding:0 8px;
    line-height:1;
    white-space:nowrap;
    border: 2px solid var(--color-text);
    border-radius: var(--radius-btn);
    background: var(--color-text);
    color: #fff;
    box-shadow: 2px 2px 0 var(--color-text);
    font-family: var(--font);
    cursor: pointer;
    transition: transform .15s cubic-bezier(.2,.8,.2,1),
                box-shadow .15s cubic-bezier(.2,.8,.2,1),
                background .15s cubic-bezier(.2,.8,.2,1);
}
.kf-link:hover {
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0 var(--color-text);
}
.kf-link.is-open {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 2px 2px 0 var(--color-text);
}
.kf-link.is-running {
    background: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(37,99,235,0.34), 3px 3px 0 var(--color-text);
}
.kf-link-indirect {
    border-style:dashed;
}
.kf-link-arc {
    flex-shrink: 0;
    color: var(--color-accent);
    opacity: 1;
}
.kf-link.is-open .kf-link-arc,
.kf-link.is-open .kf-link-chev,
.kf-link.is-running .kf-link-arc,
.kf-link.is-running .kf-link-chev { color: #fff; opacity: 1; }
.kf-link-label {
    min-width:0;
    overflow:hidden;
    text-overflow:ellipsis;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .01em;
    color: #fff;
}
.kf-link-chev {
    flex-shrink: 0;
    color: #fff;
    opacity: .85;
}

/* Segment editor — centered floating popover, responsive */
.kf-seg-editor {
    position:fixed;
    top:50%;
    left:50%;
    transform:translate(-50%, -50%);
    z-index:80;
    display:flex;
    flex-direction:column;
    gap:10px;
    width:min(420px, calc(100vw - 24px));
    max-height:min(85vh, 620px);
    overflow-y:auto;
    padding:14px;
    border:2px solid var(--color-text);
    border-radius:var(--radius-card);
    background:rgba(246,244,238,0.98);
    backdrop-filter:saturate(140%) blur(6px);
    -webkit-backdrop-filter:saturate(140%) blur(6px);
    box-shadow:4px 4px 0 var(--color-text), 0 24px 48px rgba(0,0,0,0.22);
    font-family:var(--font);
}
@media (min-width:1280px) {
    .kf-seg-editor { width:460px; padding:16px; gap:12px; }
}
@media (max-width:640px) {
    .kf-seg-editor {
        width:calc(100vw - 20px);
        max-height:82vh;
        padding:12px;
        gap:8px;
    }
}
@media (max-width:380px) {
    .kf-seg-editor { padding:10px; gap:7px; }
}
.kf-seg-editor[hidden] { display:none !important; }
.kf-seg-head {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    padding-bottom:5px;
    border-bottom:1px solid var(--color-border-lt);
    color:var(--color-text-sec);
    font-size:10px;
    font-weight:800;
    letter-spacing:.08em;
    text-transform:uppercase;
}
.kf-seg-close {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:22px;
    height:22px;
    border:1.5px solid var(--color-text);
    border-radius:var(--radius-btn);
    background:var(--color-bg);
    color:var(--color-text);
    box-shadow:1.5px 1.5px 0 var(--color-text);
    font-family:var(--font);
    font-size:16px;
    font-weight:700;
    line-height:1;
    cursor:pointer;
}
.kf-seg-row {
    display:flex;
    align-items:center;
    gap:7px;
}
.kf-seg-row--col {
    flex-direction:column;
    align-items:stretch;
    gap:6px;
}
.kf-seg-lbl {
    flex:0 0 42px;
    color:var(--color-text);
    font-size:11px;
    font-weight:800;
}
.kf-seg-row--col .kf-seg-lbl { flex:none; }

.kf-ease-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}
.kf-ease-tile {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    min-width:0;
    padding: 5px 5px 4px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-btn);
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    font-family: var(--font);
    transition: border-color .15s, box-shadow .15s, background .15s, transform .15s;
}
.kf-ease-tile:hover {
    border-color: var(--color-accent);
    transform: translate(-1px, -1px);
    box-shadow: 2px 2px 0 var(--color-text);
}
.kf-ease-tile.is-active {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: #fff;
    box-shadow: 2px 2px 0 var(--color-text);
}
.kf-ease-curve {
    width: 100%;
    height: 44px;
    display: block;
}
.kf-ease-axis {
    stroke: currentColor;
    stroke-width: 1;
    opacity: .25;
}
.kf-ease-line {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.kf-ease-tile.is-active .kf-ease-line { stroke: #fff; }
.kf-ease-tile-lbl {
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    font-size: 10px;
    font-weight: 700;
    text-align: center;
    letter-spacing: .02em;
    color: inherit;
}
.kf-seg-sel {
    flex:1;
    min-width:0;
}
.kf-seg-num {
    flex: 1;
    min-width: 0;
    text-align: center;
    -moz-appearance: textfield;
}
.kf-seg-num::-webkit-outer-spin-button,
.kf-seg-num::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.kf-seg-unit {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-sec);
    min-width: 10px;
}
@media (prefers-reduced-motion: reduce) {
    .kf-ease-tile { transition:none; }
}
.kf-num {
    position:absolute;
    right:7px;
    bottom:6px;
    z-index:2;
    min-width:18px;
    height:18px;
    padding:0 5px;
    border-radius:5px;
    background:rgba(26,25,22,0.82);
    font-size:10px;
    font-weight:700;
    line-height:18px;
    text-align:center;
    color:#fff;
    text-shadow:0 1px 3px rgba(0,0,0,.5);
}
.kf-del {
    position:absolute;
    top:6px;
    right:6px;
    z-index:3;
    width:18px;
    height:18px;
    border-radius:5px;
    background: rgba(26,25,22,0.84);
    color:#fff;
    font-size:9px;
    line-height:18px;
    text-align:center;
    display:none;
    cursor:pointer;
}
.kf-del svg { pointer-events:none; }
.kf-frame:hover .kf-del { display:block; }

.kf-recap {
    position:absolute;
    top:6px;
    right:28px;
    z-index:3;
    width:18px;
    height:18px;
    border-radius:5px;
    background:rgba(26,25,22,0.84);
    color:#fff;
    display:none;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    transition:background .15s;
}
.kf-recap:hover { background: var(--color-accent); }
.kf-recap svg { pointer-events:none; }
.kf-frame:hover .kf-recap { display:flex; }
@media (hover: none) {
    .kf-recap, .kf-del { display:flex; }
}

/* Drag-and-drop reorder */
.kf-frame { touch-action: manipulation; cursor: grab; }
.kf-frame.is-dragging {
    opacity:.45;
    transform: scale(.96);
    cursor: grabbing;
    box-shadow: 2px 2px 0 var(--color-text);
    transition: none;
}
#kf-frames.is-reordering { cursor: grabbing; }
#kf-frames.is-reordering .kf-frame:not(.is-dragging) {
    transition: transform .18s, box-shadow .15s;
}
.kf-frame.is-drop-before {
    box-shadow: 0 -4px 0 var(--color-accent), 2px 2px 0 var(--color-text);
}
.kf-frame.is-drop-after {
    box-shadow: 0 4px 0 var(--color-accent), 2px 2px 0 var(--color-text);
}

.kf-btn {
    display:flex; align-items:center; gap:5px;
    padding:6px 11px;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:11px; font-weight:600; font-family: var(--font);
    cursor:pointer; white-space:nowrap; transition:all .15s; flex-shrink:0;
}
.kf-btn:hover { background:var(--color-surface); }
.kf-btn.on { background: var(--color-accent); color: #ffffff; border:none; }
.kf-xform-row .kf-btn.on {
    background:#dc2626;
    color:#fff;
    box-shadow:2px 2px 0 var(--color-text);
}
.kf-add-row .kf-btn,
.kf-xform-row .kf-btn {
    justify-content:center;
    min-width:0;
    padding:7px 6px;
}

.kf-div { width:1px; height:26px; background: var(--color-border); flex-shrink:0; }

.kf-mode-row {
    display:flex; flex-shrink:0;
    border:1.5px solid var(--color-text);
    border-radius:var(--radius-btn);
    overflow:hidden;
    box-shadow:2px 2px 0 var(--color-text);
}
.kf-mode-btn {
    padding:5px 10px;
    background:var(--color-bg);
    border:none;
    border-right:1px solid var(--color-border);
    color:var(--color-text);
    font-size:10px; font-weight:700;
    font-family:var(--font-mono);
    cursor:pointer; letter-spacing:.05em;
    transition:background .15s, color .15s;
}
.kf-mode-btn:last-child { border-right:none; }
.kf-mode-btn.on { background:var(--color-accent); color:#fff8e9; }
.kf-mode-btn:hover:not(.on) { background:var(--color-surface); }

.path-select {
    height:28px;
    min-width:88px;
    padding:0 8px;
    border:1.5px solid var(--color-text);
    border-radius:var(--radius-btn);
    background:var(--color-bg);
    color:var(--color-text);
    box-shadow:2px 2px 0 var(--color-text);
    font-family:var(--font);
    font-size:11px;
    font-weight:700;
    cursor:pointer;
}
.path-select:focus-visible {
    outline:2px solid var(--color-accent);
    outline-offset:2px;
}
/* ── Bottom controls ────────────────────────────────────────────── */
#controls {
    position:fixed; bottom:18px; left:50%; transform:translateX(-50%);
    display:flex; align-items:center; gap:6px;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-lg);
    padding:8px 14px; z-index:50;
}
.c-div { width:1px; height:26px; background: var(--color-border); margin:0 2px; }
.c-btn {
    display:flex; align-items:center; gap:5px;
    padding:6px 11px;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:12px; font-weight:500; font-family: var(--font);
    cursor:pointer; transition:all .15s; white-space:nowrap;
}
.c-btn:hover { background:var(--color-surface); }
.c-btn.on { background: var(--color-accent); color: #ffffff; }
.c-btn svg { width:13px; height:13px; flex-shrink:0; }

.bg-picker { position:relative; }
.bg-dropdown {
    display:none;
    position:absolute;
    bottom:calc(100% + 6px);
    left:50%; transform:translateX(-50%);
    background:var(--color-bg);
    border:1.5px solid var(--color-border);
    border-radius:var(--radius-card);
    box-shadow:4px 4px 0 var(--color-text);
    padding:5px;
    flex-direction:column;
    gap:3px;
    min-width:90px;
    z-index:200;
}
.bg-dropdown.open { display:flex; }
.bg-opt {
    display:block; width:100%;
    padding:6px 12px;
    background:transparent;
    border:none;
    border-radius:var(--radius-btn);
    color:var(--color-text);
    font-size:12px; font-weight:500; font-family:var(--font);
    cursor:pointer; text-align:left; transition:background .12s;
}
.bg-opt:hover { background:var(--color-surface); }
.bg-opt.on { background:var(--color-accent); color:#fff; }
#bg-main-btn.on { background:var(--color-accent); color:#fff; }

/* ── Background image controls ───────────────────────────────── */
.bg-img-controls {
    display:none; position:fixed; bottom:56px; left:50%; transform:translateX(-50%);
    background:var(--color-bg); border:2px solid var(--color-border);
    border-radius:var(--radius-card); box-shadow:var(--shadow-card);
    padding:10px 14px; z-index:52; width:280px;
}
.bg-img-controls.show { display:block; }
.bg-img-row {
    display:grid; grid-template-columns:48px 1fr 32px;
    gap:6px; align-items:center; margin-bottom:4px;
    font-size:10px; font-family:var(--font); color:var(--color-text-sec);
}
.bg-img-row input[type="range"] { width:100%; }
.bg-img-row span:last-child { text-align:right; font-size:10px; }
.bg-img-remove {
    width:100%; margin-top:6px; padding:5px;
    background:rgba(220,50,50,0.1); border:1px solid rgba(220,50,50,0.2);
    border-radius:var(--radius-btn); color:#c0392b;
    font-size:10px; font-weight:600; font-family:var(--font);
    cursor:pointer; transition:all .15s;
}
.bg-img-remove:hover { background:rgba(220,50,50,0.2); }

.world-tag {
    display:inline-flex; align-items:center; gap:4px;
    margin-left:8px; padding:2px 6px 2px 8px;
    background:var(--color-surface); border-radius:var(--radius-btn);
    font-size:11px; color:var(--color-text-sec);
}
.world-tag[hidden] { display:none; }
.world-tag-x {
    background:none; border:none; color:var(--color-text-sec);
    font-size:14px; line-height:1; cursor:pointer; padding:0 2px;
}
.world-tag-x:hover { color:var(--color-text); }

.world-browse-back { display:none !important; }
html.world-browse .world-browse-back { display:inline-flex !important; }
html.world-browse .lib-upload-btn { display:none !important; }
html.world-browse #topbar,
html.world-browse #controls,
html.world-browse #kf-strip { z-index:0; }

#rec-btn {
    display:flex;
    align-items:center;
    gap:7px;
    padding:7px 18px;
    background:var(--color-text);
    border:none;
    border-radius:var(--radius-btn);
    color:var(--color-bg);
    font-family:var(--font);
    font-size:13px;
    font-weight:600;
    cursor:pointer;
    white-space:nowrap;
    transition:all .15s;
    box-shadow:4px 4px 0 var(--color-accent);
}
#rec-btn:hover {
    background:var(--color-bg);
    color:var(--color-text);
}
#rec-btn.rec {
    background:var(--color-accent);
    color:#fff8e9;
    animation:rec-pulse 1.6s ease-in-out infinite;
}
.rec-dot {
    width:8px;
    height:8px;
    border-radius:50%;
    background:currentColor;
}
#rec-btn.rec .rec-dot {
    animation:blink 1s step-end infinite;
}

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }
#rec-timer {
    font-size:13px; font-weight:700;
    color: var(--color-accent);
    min-width:52px; display:none;
    font-variant-numeric:tabular-nums;
}
#rec-timer.show { display:block; }

/* ── Side panel ─────────────────────────────────────────────────── */
#panel {
    position:fixed; left:auto; right:var(--viewer-panel-right); top:var(--viewer-panel-top); bottom:18px; width:var(--viewer-panel-width);
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-card);
    padding:14px; z-index:50; display:none;
    max-height:none; overflow-y:auto;
    scrollbar-width:thin; scrollbar-color:#d5d5d5 transparent;
}
#panel.show { display:block; }
#panel::-webkit-scrollbar { width:3px; }
#panel::-webkit-scrollbar-thumb { background:#d5d5d5; border-radius:2px; }

.p-sec {
    margin-bottom:14px; padding-bottom:14px;
    border-bottom: 1px solid var(--color-border-lt);
}
.p-sec:last-child { margin-bottom:0; padding-bottom:0; border-bottom:none; }
.p-lbl-head {
    font-size:11px; font-weight:700;
    color: var(--color-text);
    letter-spacing:0.5px; text-transform:uppercase;
    margin-bottom:9px;
}
.p-row { display:flex; align-items:center; gap:8px; margin-bottom:7px; }
.p-row:last-child { margin-bottom:0; }
.p-lbl { font-size:13px; font-weight:500; color: var(--color-text-sec); min-width:56px; }
input[type="range"] { flex:1; height:3px; accent-color: var(--color-accent); cursor:pointer; }
.p-val { font-size:13px; font-weight:600; color: var(--color-text); min-width:28px; text-align:right; }

.swatch-row { display:flex; gap:6px; flex-wrap:wrap; }
.swatch {
    width:22px; height:22px; border-radius:5px;
    cursor:pointer; border:2px solid transparent;
    transition:border-color .15s;
}
.swatch.sel { border-color: var(--color-accent); }

.anim-list { display:flex; flex-direction:column; gap:4px; }
.anim-item {
    display:flex; align-items:center; gap:7px;
    padding:5px 9px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-lt);
    border-radius: var(--radius-btn);
    color: var(--color-text-sec);
    font-size:11px; cursor:pointer; transition:all .15s;
}
.anim-item:hover { box-shadow: var(--shadow-hover); }
.anim-item.playing {
    background: rgba(37,99,235,0.06);
    border-color: var(--color-accent);
    color: var(--color-accent);
}


/* ── Light list ─────────────────────────────────────────────────── */
.add-light-row { display:flex; gap:5px; margin-bottom:10px; }
.add-l-btn {
    flex:1; padding:6px 4px; text-align:center;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:10px; font-weight:600; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
.add-l-btn:hover { background:var(--color-surface); }

.light-list { display:flex; flex-direction:column; gap:4px; }
.light-item {
    display:flex; align-items:center; gap:7px;
    padding:6px 9px;
    background: rgba(0,0,0,0.04);
    border: 1px solid var(--color-border-lt);
    border-radius: var(--radius-btn);
    cursor:pointer; transition:all .15s;
}
.light-item:hover { box-shadow: var(--shadow-card); }
.light-item.sel {
    background: rgba(37,99,235,0.06);
    border-color: var(--color-accent);
}
.light-dot { width:10px; height:10px; border-radius:50%; flex-shrink:0; }
.light-item-name {
    font-size:12px; font-weight:500;
    color: var(--color-text-sec);
    flex:1;
}
.light-item.sel .light-item-name { color: var(--color-accent); }
.light-del-btn {
    width:16px; height:16px; border-radius:3px;
    background:transparent; color: var(--color-accent);
    font-size:10px; line-height:16px; text-align:center; cursor:pointer;
    display:none; flex-shrink:0; border:none;
}
.light-item:hover .light-del-btn { display:block; }

/* ── Cinematic presets panel ─────────────────────────────────────── */
#cinematic-panel {
    position:fixed; left:auto; right:var(--viewer-panel-right); top:var(--viewer-panel-top); width:var(--viewer-panel-width);
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-card);
    padding:14px; z-index:55; display:none;
    max-height:calc(100dvh - var(--viewer-panel-top) - 18px); overflow-y:auto;
}
#cinematic-panel.show { display:block; }
.preset-grid { display:grid; grid-template-columns:1fr 1fr; gap:7px; margin-top:10px; }
.preset-card {
    display:flex; flex-direction:column; align-items:center; gap:5px;
    padding:10px 6px;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-badge);
    cursor:pointer; transition:all .15s; text-align:center;
}
.preset-card:hover { box-shadow: var(--shadow-hover); transform:translateY(-2px); }
.preset-card:active { transform:scale(.96); }
.preset-icon { font-size:22px; line-height:1; }
.preset-name { font-size:12px; font-weight:600; color: var(--color-text); }
.preset-desc { font-size:9px; color: var(--color-text-sec); line-height:1.3; }
.preset-dur  { font-size:11px; font-weight:500; color: var(--color-accent); margin-top:1px; }
.cinematic-hint {
    font-size:10px; color: var(--color-text-sec);
    margin-top:10px; line-height:1.4; text-align:center;
}

/* ── Lighting panel ─────────────────────────────────────────────── */
#lighting-panel {
    position:fixed; left:auto; right:var(--viewer-panel-right); top:var(--viewer-panel-top); width:var(--viewer-panel-width);
    max-height:calc(100dvh - var(--viewer-panel-top) - 18px); overflow-y:auto;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-card);
    padding:14px; z-index:55; display:none;
    scrollbar-width:thin; scrollbar-color:#d5d5d5 transparent;
}
#lighting-panel.show { display:block; }
#lighting-panel::-webkit-scrollbar { width:3px; }
#lighting-panel::-webkit-scrollbar-thumb { background:#d5d5d5; border-radius:2px; }
.lp-section-lbl {
    font-size:11px; font-weight:700; letter-spacing:0.5px;
    color: var(--color-text-sec);
    text-transform:uppercase; margin:10px 0 6px;
}
.lp-section-lbl:first-child { margin-top:0; }
.lp-grid { display:grid; grid-template-columns:1fr 1fr; gap:6px; margin-bottom:4px; }
.lp-card {
    display:flex; flex-direction:column; align-items:center; gap:3px;
    padding:9px 4px 7px;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-badge);
    cursor:pointer; transition:all .14s; text-align:center;
}
.lp-card:hover { box-shadow: var(--shadow-hover); transform:translateY(-2px); }
.lp-card.active {
    border: 1px solid var(--color-accent);
    background: rgba(37,99,235,0.04);
}
.lp-card:active { transform:scale(.96); }
.lp-icon { font-size:20px; line-height:1; }
.lp-name { font-size:12px; font-weight:600; color: var(--color-text); }
.lp-desc { font-size:8px; color: var(--color-text-sec); line-height:1.3; }
.lp-dots { display:flex; gap:3px; margin-top:3px; justify-content:center; }
.lp-dot { width:6px; height:6px; border-radius:50%; }
.lp-hint { font-size:9px; color: var(--color-text-sec); text-align:center; margin-top:8px; line-height:1.4; }

/* ── Flying Intro cards ──────────────────────────────────────────── */
.flyby-section { margin-bottom:12px; }
.flyby-badge {
    font-size:9px; font-weight:700; letter-spacing:1.5px;
    color: var(--color-accent);
    text-transform:uppercase; margin-bottom:6px;
}
.flyby-cards { display:grid; grid-template-columns:repeat(3,1fr); gap:6px; }
.flyby-card {
    display:flex; flex-direction:column; align-items:center; gap:3px;
    padding:9px 4px 7px;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-badge);
    cursor:pointer; transition:all .15s; text-align:center;
    border: 1px solid transparent;
}
.flyby-card:hover {
    background: rgba(37,99,235,0.04);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}
.flyby-card:active { transform:scale(.96); }
.flyby-card-icon { font-size:20px; line-height:1; margin-bottom:1px; }
.flyby-card-name { font-size:12px; font-weight:600; color: var(--color-text); }
.flyby-card-desc { font-size:8px; color: var(--color-text-sec); line-height:1.3; }
.flyby-card-foot { display:flex; align-items:center; justify-content:center; margin-top:4px; }
.flyby-card-dur { font-size:9px; color: var(--color-accent); font-weight:600; }


/* ── Selected light controls ────────────────────────────────────── */
#light-controls {
    position:fixed;
    left:auto;
    right:calc(var(--viewer-panel-right) + var(--viewer-panel-width) + var(--viewer-panel-gap));
    top:var(--viewer-panel-top);
    width:var(--viewer-light-width);
    max-width:calc(100vw - var(--viewer-panel-right) - var(--viewer-panel-width) - var(--viewer-panel-gap) - 18px);
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-card);
    padding:14px; z-index:56; display:none;
}
#light-controls.show { display:block; }
#light-controls .p-lbl-head { margin-bottom:12px; }
#light-controls .p-row {
    display:grid;
    grid-template-columns:72px minmax(0, 1fr) 42px;
    gap:10px;
    align-items:center;
}
#light-controls .p-lbl,
#light-controls .p-val {
    min-width:0;
}
#light-controls .p-val {
    text-align:right;
}
#light-controls input[type="range"] {
    width:100%;
    min-width:0;
}

.transform-btns { display:flex; gap:5px; margin-bottom:10px; }
.xform-btn {
    flex:1; padding:5px 4px; text-align:center;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text);
    font-size:11px; font-weight:600; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
.xform-btn:hover { background:var(--color-surface); }
.xform-btn.on { background: var(--color-accent); color: #ffffff; }

#light-controls .color-row {
    display:grid;
    grid-template-columns:62px 48px minmax(0, 1fr);
    gap:10px;
    align-items:center;
    margin-bottom:9px;
}
.color-row { display:flex; align-items:center; gap:8px; margin-bottom:7px; }
.color-row span { font-size:11px; font-weight:500; color: var(--color-text-sec); }
input[type="color"] { width:32px; height:22px; border:none; background:none; cursor:pointer; border-radius:4px; overflow:hidden; }
#light-controls input[type="color"] {
    width:44px;
}

.del-light-btn {
    width:100%; padding:7px; margin-top:8px;
    background: rgba(37,99,235,0.08);
    border: 1px solid rgba(37,99,235,0.15);
    border-radius: var(--radius-btn);
    color: var(--color-accent);
    font-size:11px; font-weight:600; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
.del-light-btn:hover { background: rgba(37,99,235,0.16); }

/* ── Parts panel (right side, like cinematic/lighting) ─────────── */
#parts-panel {
    position:fixed; left:auto; right:var(--viewer-panel-right); top:var(--viewer-panel-top); width:var(--viewer-panel-width);
    max-height:calc(100vh - var(--viewer-panel-top) - 18px);
    overflow-y:auto;
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-card);
    padding:14px; z-index:55; display:none;
}
#parts-panel.show { display:block; }
#parts-panel::-webkit-scrollbar { width:3px; }
#parts-panel::-webkit-scrollbar-thumb { background:#d5d5d5; border-radius:2px; }
.parts-hint { font-size:10px; color:var(--color-text-sec); margin-bottom:8px; }
.parts-list { display:flex; flex-direction:column; gap:2px; max-height:40vh; overflow-y:auto; margin-bottom:4px; }
.parts-list::-webkit-scrollbar { width:3px; }
.parts-list::-webkit-scrollbar-thumb { background:#d5d5d5; border-radius:2px; }
.part-item {
    display:flex; align-items:center; gap:8px;
    padding:6px 8px; border-radius:var(--radius-btn);
    cursor:pointer; font-size:11px; font-family:var(--font);
    color:var(--color-text); transition:background .12s;
    border:1px solid transparent;
}
.part-item:hover { background:var(--color-surface); }
.part-item.sel { background:rgba(37,99,235,0.1); border-color:rgba(37,99,235,0.25); font-weight:600; }
.part-item-dot {
    width:14px; height:14px; border-radius:50%;
    border:1.5px solid rgba(0,0,0,0.15); flex-shrink:0;
}
.part-item-name { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; flex:1; }
.parts-actions .color-row {
    display:grid;
    grid-template-columns:42px 44px minmax(0, 1fr);
    gap:8px;
    align-items:center;
    margin-bottom:8px;
}
.parts-actions input[type="color"] { width:44px; }
.part-swatches {
    display:flex; flex-wrap:wrap; gap:5px; margin-bottom:10px;
}
.part-sw {
    width:22px; height:22px; border-radius:50%; border:2px solid rgba(0,0,0,0.12);
    cursor:pointer; transition:transform .12s;
}
.part-sw:hover { transform:scale(1.2); }
.part-action-row { display:flex; gap:5px; margin-bottom:6px; }
.part-reset-btn {
    flex:1; padding:5px 4px; text-align:center;
    background: var(--color-surface);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text-sec);
    font-size:10px; font-weight:600; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
.part-reset-btn:hover { background:var(--color-accent); color:#fff; }
.part-deselect-btn {
    width:100%; padding:7px; margin-top:2px;
    background: rgba(37,99,235,0.08);
    border: 1px solid rgba(37,99,235,0.15);
    border-radius: var(--radius-btn);
    color: var(--color-accent);
    font-size:11px; font-weight:600; font-family: var(--font);
    cursor:pointer; transition:all .15s;
}
.part-deselect-btn:hover { background: rgba(37,99,235,0.16); }

/* ── Recording popup ────────────────────────────────────────────── */
#rec-popup {
    position:fixed; bottom:90px; left:50%;
    transform:translateX(-50%) translateY(16px);
    opacity:0; width:272px;
    background:rgba(246,244,238,0.97);
    border:2px solid var(--color-text);
    box-shadow:6px 6px 0 var(--color-text);
    border-radius:var(--radius-card);
    padding:14px; z-index:300;
    transition:opacity .22s, transform .22s;
    backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
}
#rec-popup.show { opacity:1; transform:translateX(-50%) translateY(0); }
.rec-popup-head { display:flex; align-items:center; gap:8px; margin-bottom:8px; }
.rec-popup-title { font-size:13px; font-weight:700; color:var(--color-text); flex:1; }
.rec-popup-close {
    width:22px; height:22px; flex-shrink:0;
    background:var(--color-surface); border:1.5px solid var(--color-text);
    border-radius:4px; box-shadow:1px 1px 0 var(--color-text);
    color:var(--color-text); cursor:pointer;
    display:flex; align-items:center; justify-content:center; transition:all .15s;
}
.rec-popup-close:hover { border-color:var(--color-accent); box-shadow:2px 2px 0 var(--color-accent); }
.rec-popup-meta {
    font-family:var(--font-mono); font-size:10px;
    color:var(--color-text-sec); margin-bottom:10px; letter-spacing:.04em;
}
.rec-popup-btns { display:flex; flex-direction:column; gap:6px; }
.rec-popup-dl {
    display:flex; align-items:center; gap:9px;
    width:100%; padding:9px 12px;
    background:var(--color-surface); color:var(--color-text);
    border:1.5px solid var(--color-border); border-radius:var(--radius-btn);
    box-shadow:2px 2px 0 var(--color-text);
    font-size:12px; font-family:var(--font); cursor:pointer; transition:all .18s;
    text-align:left;
}
.rec-popup-dl span { display:flex; flex-direction:column; gap:1px; }
.rec-popup-dl strong { font-size:13px; font-weight:700; }
.rec-popup-dl small { font-size:10px; color:var(--color-text-sec); font-weight:400; }
.rec-popup-dl svg { flex-shrink:0; }
.rec-popup-mp4 {
    background:var(--color-text); color:#fff8e9;
    border-color:var(--color-text); box-shadow:3px 3px 0 var(--color-accent);
}
.rec-popup-mp4 small { color:rgba(255,248,233,0.65); }
.rec-popup-dl:hover { box-shadow:4px 4px 0 var(--color-text); transform:translate(-1px,-1px); }
.rec-popup-mp4:hover { background:var(--color-accent); border-color:var(--color-text); }
.rec-popup-webm:hover { background:var(--color-surface); border-color:var(--color-text); }
.rec-popup-dl:active { transform:translate(1px,1px); box-shadow:2px 2px 0 var(--color-text); }
#rec-fmt-picker {
    position:fixed; bottom:90px; left:50%;
    transform:translateX(-50%) translateY(16px);
    opacity:0; width:248px;
    background:rgba(246,244,238,0.97);
    border:2px solid var(--color-text);
    box-shadow:6px 6px 0 var(--color-text);
    border-radius:var(--radius-card);
    padding:14px; z-index:300;
    transition:opacity .22s, transform .22s;
    backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
}
#rec-fmt-picker.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* ── Loading & toast ────────────────────────────────────────────── */
#loading {
    position:fixed; top:50%; left:50%; transform:translate(-50%,-50%);
    display:none; flex-direction:column; align-items:center; gap:12px; z-index:150;
}
#loading.show { display:flex; }
.spinner {
    width:38px; height:38px;
    border:3px solid rgba(37,99,235,0.18);
    border-top-color: var(--color-accent);
    border-radius:50%;
    animation:spin .75s linear infinite;
}
@keyframes spin { to{transform:rotate(360deg)} }
.load-txt { font-size:13px; color: var(--color-text-sec); }
.load-bar {
    width: 220px; height: 4px;
    background: rgba(26,25,22,0.10);
    border-radius: 999px;
    overflow: hidden;
    display: none;
}
.load-bar.show { display: block; }
.load-bar-fill {
    width: 0%; height: 100%;
    background: var(--color-accent);
    border-radius: 999px;
    transition: width .2s ease-out;
}
.load-meta {
    font-size: 11px;
    color: var(--color-text-sec);
    font-variant-numeric: tabular-nums;
    min-height: 14px;
}

#toast {
    position:fixed; top:68px; left:50%;
    transform:translateX(-50%) translateY(-6px);
    background: var(--color-bg);
    box-shadow: var(--shadow-card);
    border-radius:12px;
    padding:9px 16px; font-size:14px; font-weight:500;
    color: var(--color-text);
    z-index:200; opacity:0; transition:all .25s; pointer-events:none;
}
#toast.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* ── Icon SVGs ──────────────────────────────────────────────── */
.ico { display:inline-block; vertical-align:middle; flex-shrink:0; }
.ico svg { display:block; }
.btn-icon { display:flex; align-items:center; gap:6px; }

/* ── Portfolio fingerprint overrides ───────────────────────────── */
button, input, .top-btn, .c-btn, .kf-btn,
.add-l-btn, .xform-btn, .reels-toggle-btn {
    font-family: var(--font);
}

#topbar {
    height:64px;
    background:
        linear-gradient(rgba(246,244,238,0.84), rgba(246,244,238,0.84)),
        radial-gradient(circle at 28% 10%, rgba(255,236,153,0.28), transparent 28%),
        radial-gradient(circle at 74% 30%, rgba(37,99,235,0.08), transparent 30%),
        var(--paper-texture) repeat;
    background-size:auto, auto, auto, 1100px auto;
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border-bottom: 1.5px solid var(--color-text);
    box-shadow: 0 4px 0 var(--color-text);
    padding:0 22px;
    overflow:hidden;
}
#topbar > * {
    position:relative;
    z-index:2;
}
.logo {
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:inherit;
    text-decoration:none;
    cursor:pointer;
    border-radius:10px;
}
.logo:focus-visible {
    outline:2px solid var(--color-accent);
    outline-offset:3px;
}
.tb-logo-crop {
    display: block;
    height: 44px;
    overflow: visible;
    flex-shrink: 0;
    align-self: center;
}
.tb-logo-img {
    display: block;
    height: 44px;
    width: auto;
    margin: 0;
    object-fit: contain;
}

#model-name, .p-lbl, .color-row span,
.preset-desc, .lp-desc, .lp-hint, .flyby-card-desc,
.cinematic-hint, .load-txt {
    color: var(--color-text-sec);
}

#topbar button, #cinematic-btn, #lighting-btn, #panel-btn,
.top-btn, .c-btn, .kf-btn,
.add-l-btn, .xform-btn, .reels-toggle-btn,
.del-light-btn {
    border:1.5px solid var(--color-text);
    background:var(--color-bg);
    color:var(--color-text);
    box-shadow:2px 2px 0 var(--color-text);
    font-weight:600;
    transition:transform .18s, box-shadow .18s, background .18s, color .18s, border-color .18s;
}
#topbar button:hover, #cinematic-btn:hover, #lighting-btn:hover, #panel-btn:hover,
.top-btn:hover, .c-btn:hover, .kf-btn:hover,
.add-l-btn:hover, .xform-btn:hover, .reels-toggle-btn:hover,
.del-light-btn:hover {
    background:var(--color-bg);
    border-color:var(--color-accent);
    box-shadow:4px 4px 0 var(--color-accent);
    transform:translate(-1px,-1px);
}
.c-btn.on, .kf-btn.on,
.xform-btn.on, .reels-toggle-btn.on,
#cinematic-btn.on, #lighting-btn.on, #panel-btn.on {
    background:var(--color-accent);
    color:#fff8e9;
    border-color:var(--color-text);
}

#controls, #kf-strip, #panel, #cinematic-panel,
#lighting-panel, #light-controls, #parts-panel, #toast {
    background:rgba(246,244,238,0.96);
    border:2px solid var(--color-border);
    box-shadow:var(--shadow-card);
    border-radius:var(--radius-card);
}
#controls {
    border-radius:18px;
}
#panel {
    left:auto;
    right:var(--viewer-panel-right);
    top:var(--viewer-panel-top);
    bottom:18px;
    width:var(--viewer-panel-width);
    max-width:calc(100vw - var(--viewer-panel-right) - 18px);
    padding:16px;
    max-height:none;
    overflow-x:hidden;
    overflow-y:auto;
    scrollbar-width:none;
}
#cinematic-panel,
#lighting-panel,
#parts-panel {
    left:auto;
    right:var(--viewer-panel-right);
    top:var(--viewer-panel-top);
    width:var(--viewer-panel-width);
    max-width:calc(100vw - var(--viewer-panel-right) - 18px);
    max-height:calc(100dvh - var(--viewer-panel-top) - 18px);
    overflow-y:auto;
}
#panel::-webkit-scrollbar {
    width:0;
    height:0;
}
#panel .p-sec {
    margin-bottom:11px;
    padding-bottom:11px;
}
#panel .p-lbl-head {
    margin-bottom:8px;
    font-size:10px;
    letter-spacing:.11em;
}
#panel .p-row {
    gap:8px;
    margin-bottom:6px;
}
#panel .p-lbl {
    min-width:52px;
    font-size:12px;
}
#panel input[type="range"] {
    min-width:0;
}
#panel .p-val {
    min-width:24px;
    font-size:12px;
}
#panel .add-light-row {
    gap:7px;
}
#panel .add-light-row {
    flex-wrap:wrap;
}
#panel .add-l-btn {
    flex:1 1 68px;
    padding:6px 5px;
}
#panel .reels-toggle-row {
    align-items:center;
    gap:8px;
}
#panel .reels-toggle-btn {
    flex:0 0 112px;
    padding:6px 8px;
    line-height:1.1;
}
#panel .reels-toggle-row span {
    flex:1;
    min-width:0;
    line-height:1.25;
}
#kf-strip {
    bottom:86px;
}
.c-div, .kf-div {
    background:var(--color-border-lt);
}
.p-lbl-head, .kf-label, .lp-section-lbl, .flyby-badge {
    font-family:var(--font-mono);
    color:var(--color-accent);
    letter-spacing:0.08em;
}
.p-sec {
    border-color:var(--color-border-lt);
}
input[type="range"] {
    accent-color:var(--color-accent);
}
.spinner {
    border-color:rgba(37,99,235,0.18);
    border-top-color:var(--color-accent);
}
.kf-frame {
    background:var(--color-bg);
    border-color:var(--color-border);
    box-shadow:2px 2px 0 var(--color-text);
}
.kf-frame.kf-frame-cam { border-color:rgba(37,99,235,0.48); }
.kf-frame.kf-frame-obj { border-color:rgba(15,118,110,0.48); }
.kf-frame:hover, .kf-frame.active {
    border-color:var(--color-accent);
    box-shadow:3px 3px 0 var(--color-accent);
}
.kf-del {
    background:var(--color-accent);
    color:#fff8e9;
}
.anim-item, .light-item, .preset-card,
.lp-card, .flyby-card {
    background:var(--color-bg);
    border:1.5px solid var(--color-border);
    box-shadow:2px 2px 0 var(--color-text);
}
.anim-item:hover, .light-item:hover,
.preset-card:hover, .lp-card:hover, .flyby-card:hover {
    background:var(--color-bg);
    border-color:var(--color-accent);
    box-shadow:4px 4px 0 var(--color-accent);
    transform:translate(-1px,-1px);
}
.anim-item.playing, .light-item.sel, .lp-card.active {
    background:rgba(37,99,235,0.08);
    border-color:var(--color-accent);
}
.light-item.sel .light-item-name,
.preset-dur, .flyby-card-dur, .lp-name, .preset-name {
    color:var(--color-accent);
}
.light-item-name {
    color:var(--color-text);
}
.swatch {
    border:1.5px solid var(--color-text);
    box-shadow:1px 1px 0 var(--color-text);
}
.swatch.sel {
    border-color:var(--color-accent);
    box-shadow:2px 2px 0 var(--color-accent);
}

@keyframes rec-pulse {
    0%,100% { box-shadow:4px 4px 0 var(--color-accent), 0 0 0 0 rgba(37,99,235,0.38); }
    50% { box-shadow:4px 4px 0 var(--color-accent), 0 0 0 8px rgba(37,99,235,0); }
}

@media (max-width: 760px) {
    body {
        height: 100dvh;
        min-height: 100svh;
    }
    #topbar {
        height:56px;
        padding:0 10px;
        gap:4px;
        overflow:hidden;
    }
    .logo { font-size:18px; gap:6px; }
    .top-btn { display:none; }
    #model-name { max-width:80px; font-size:10px; }
    #cinematic-btn,
    #lighting-btn {
        padding:4px 10px;
        font-size:10px;
    }
    #panel-btn {
        display:flex;
        padding:4px 8px;
        font-size:10px;
    }
    #panel-btn svg { width:12px; height:12px; }
    #controls {
        left:10px;
        right:10px;
        transform:none;
        width:auto;
        max-width:none;
        overflow-x:auto;
        justify-content:flex-start;
        bottom:10px;
        padding:6px 8px;
        gap:4px;
    }
    #panel, #cinematic-panel, #lighting-panel, #parts-panel {
        top:62px;
        left:auto;
        right:8px;
        bottom:128px;
        width:min(86vw, 340px);
        max-width:none;
        max-height:none;
        overflow-y:auto;
        background:rgba(246,244,238,0.58);
        backdrop-filter:blur(14px) saturate(130%);
        -webkit-backdrop-filter:blur(14px) saturate(130%);
    }
    #panel {
        box-shadow:4px 4px 0 rgba(26,25,22,0.75);
    }
    #light-controls, #parts-panel {
        top:62px;
        left:auto;
        right:8px;
        bottom:128px;
        width:min(86vw, 340px);
        max-width:none;
        max-height:none;
        overflow-y:auto;
        background:rgba(246,244,238,0.86);
        box-shadow:4px 4px 0 rgba(26,25,22,0.75);
        backdrop-filter:blur(14px) saturate(130%);
        -webkit-backdrop-filter:blur(14px) saturate(130%);
    }
    #panel .p-sec {
        background:transparent;
    }
    #panel .p-row,
    #panel .add-light-row,
    #panel .reels-toggle-row {
        background:transparent;
    }
    #kf-strip {
        top:62px;
        left:8px;
        right:auto;
        transform:none;
        width:128px;
        bottom:74px;
        max-width:none;
        overflow:hidden;
        justify-content:flex-start;
        padding:8px;
        gap:8px;
        flex-wrap:nowrap;
    }
    #kf-strip .kf-strip-header { gap:5px; }
    #kf-strip .kf-label { display:block; font-size:9px; }
    #kf-strip .kf-play-btn {
        min-width:30px;
        width:30px;
        height:28px;
        padding:0;
        font-size:0;
        gap:0;
    }
    #kf-strip .kf-play-btn svg { margin:0; }
    #kf-strip .kf-add-row,
    #kf-strip .kf-xform-row {
        grid-template-columns:1fr;
        gap:5px;
    }
    #kf-strip .kf-btn {
        padding:6px 7px;
        font-size:10px;
        justify-content:center;
    }
    #kf-strip #kf-frames {
        max-width:none;
        flex:1 1 auto;
        min-width:0;
        gap:6px;
        padding-right:1px;
    }
    #kf-strip .kf-frame { height:58px; }
    #kf-strip .kf-link {
        grid-template-columns:auto minmax(0, 1fr) auto;
        height:32px;
        padding:0 7px;
        gap:5px;
        box-shadow:1.5px 1.5px 0 var(--color-text);
    }
    #kf-strip .kf-link-arc { display:none; }
    #kf-strip .kf-link-label { font-size:9px; }
    #kf-strip .kf-link-type {
        width:17px;
        height:17px;
        font-size:9px;
    }
    .kf-seg-editor .kf-seg-head { font-size:10px; }
    .kf-seg-editor .kf-ease-curve { height:38px; }
    .kf-seg-editor .kf-ease-tile-lbl { font-size:9.5px; }
    .reels-toggle-row { display:none; }
    #reels-overlay { display:none !important; }
    #drop-overlay {
        min-height:100dvh;
        overflow-y:auto;
        -webkit-overflow-scrolling:touch;
        overscroll-behavior:contain;
    }
}

@media (max-width: 380px) {
    #panel, #cinematic-panel, #lighting-panel, #light-controls, #parts-panel {
        left:auto;
        right:8px;
        width:calc(100vw - 16px);
    }
    #kf-strip {
        width:112px;
    }
    #kf-strip .kf-btn {
        font-size:9px;
        padding-left:5px;
        padding-right:5px;
    }
}

/* ── Library landing layout ───────────────────────────────────────────── */
#drop-overlay {
    display: flex;
    flex-direction: column;
    background: #f6f4ee;
    width: 100%;
    max-width: 100%;
    height: 100dvh;
    min-height: 0;
    overflow: hidden;
}

/* ── Library header ───────────────────────────────────────────────────── */
.lib-header {
    display: grid;
    grid-template-columns: auto minmax(180px, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding: 10px 18px;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    background: #f6f4ee;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
    min-width: 0;
}

.lib-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
    min-width: 0;
}
.lib-logo .tb-logo-crop { height: 40px; }
.lib-logo .tb-logo-img  { height: 40px; }

.lib-search-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1.5px solid rgba(0,0,0,0.13);
    border-radius: 9px;
    padding: 0 12px;
    height: 38px;
    transition: border-color .15s, box-shadow .15s;
    min-width: 0;
}
.lib-search-wrap:focus-within {
    border-color: rgba(0,0,0,0.28);
    box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}
#sf-q {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    outline: none;
    font-family: 'Inter Tight', sans-serif;
    font-size: 13.5px;
    color: #1a1a1a;
}
#sf-q::placeholder { color: #aaa; }
#sf-clear {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0 2px;
    font-size: 17px;
    color: #aaa;
    line-height: 1;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}
#sf-clear:hover { color: #555; }

.lib-header-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    justify-content: flex-end;
    min-width: 0;
}

.lib-upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 14px;
    height: 34px;
    border-radius: 8px;
    font-family: 'Inter Tight', sans-serif;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    background: var(--color-accent);
    color: #fff;
    border: none;
    white-space: nowrap;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    transition: background .2s cubic-bezier(.2,.8,.2,1), transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .2s cubic-bezier(.2,.8,.2,1);
    flex-shrink: 0;
    box-shadow: 2px 2px 0 rgba(26,25,22,0.16);
}
.lib-upload-btn,
.lib-upload-btn:visited,
.lib-upload-btn:link { color: #fff; text-decoration: none; }
.lib-upload-btn:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    color: #fff;
    text-decoration: none;
    box-shadow: 3px 3px 0 rgba(26,25,22,0.18);
}
.lib-upload-btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.lib-upload-btn input { display: none; }

.lib-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
    height: 34px;
    border-radius: 8px;
    font-family: 'Inter Tight', sans-serif;
    font-size: 12.5px;
    font-weight: 600;
    color: #555;
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background .2s cubic-bezier(.2,.8,.2,1), color .2s cubic-bezier(.2,.8,.2,1), transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .2s cubic-bezier(.2,.8,.2,1);
    white-space: nowrap;
    flex-shrink: 0;
}
.lib-nav-btn:hover { background: rgba(0,0,0,0.06); color: #1a1a1a; transform: translateY(-1px); }
.lib-nav-btn svg { opacity: .6; flex-shrink: 0; }
.lib-nav-tutorial,
.lib-nav-tutorial:visited,
.lib-nav-tutorial:link {
    color: #fff;
    background: #1a1a1a;
    box-shadow: 2px 2px 0 rgba(26,25,22,0.16);
}
.lib-nav-tutorial:hover {
    background: #000;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 3px 3px 0 rgba(26,25,22,0.18);
}
.lib-nav-support,
.lib-nav-support:visited,
.lib-nav-support:link {
    color: #fff;
    background: #dc2626;
    box-shadow: 2px 2px 0 rgba(26,25,22,0.16);
}
.lib-nav-support:hover {
    background: #b91c1c;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 3px 3px 0 rgba(26,25,22,0.18);
}
.lib-nav-tutorial svg,
.lib-nav-support svg {
    opacity: .95;
}

/* Status bar */
.lib-statusbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 18px 4px;
    flex-shrink: 0;
    min-width: 0;
}
.lib-status-txt {
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    font-weight: 600;
    color: #888;
    letter-spacing: .04em;
    text-transform: uppercase;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.lib-drag-hint {
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    color: #bbb;
    text-align: center;
    white-space: nowrap;
}
.lib-sketchfab-credit {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: #aaa;
    text-decoration: none;
    transition: color .15s;
    white-space: nowrap;
    flex-shrink: 0;
}
.lib-sketchfab-credit:hover { color: #555; }
.lib-sketchfab-credit svg { opacity: .6; }

/* Grid body */
.lib-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 10px 14px 28px;
    position: relative;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* Drag-over veil */
.lib-drop-veil {
    display: none;
    position: absolute;
    inset: 0;
    z-index: 10;
    background: rgba(246,244,238,0.92);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 12px;
    font-family: 'Inter Tight', sans-serif;
    font-size: 15px;
    font-weight: 600;
    color: #444;
    border: 2.5px dashed rgba(0,0,0,0.2);
    border-radius: 12px;
    margin: 8px;
    pointer-events: none;
}
.lib-drop-veil.active { display: flex; }

.sf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr));
    gap: 12px;
}

.sf-card {
    border-radius: var(--radius-card);
    background: #fff;
    border: 2px solid var(--color-text);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    cursor: pointer;
    transition: transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .2s cubic-bezier(.2,.8,.2,1), border-color .15s;
    display: flex;
    flex-direction: column;
    min-width: 0;
    contain: layout paint style;
    content-visibility: auto;
    contain-intrinsic-size: 220px 230px;
}
@media (hover: hover) and (pointer: fine) {
    .sf-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: var(--color-text);
    }
}

@keyframes sf-card-in {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}
.sf-card.is-enter {
    animation: sf-card-in .38s cubic-bezier(.2,.8,.2,1) both;
    animation-delay: calc(var(--i, 0) * 28ms);
}

.sf-card-thumb {
    width: 100%;
    aspect-ratio: 4/3;
    background-color: #e8e6e0;
    border-bottom: 2px solid var(--color-text);
    position: relative;
    overflow: hidden;
}
.sf-card-thumb img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .45s cubic-bezier(.2,.8,.2,1);
}
@media (hover: hover) and (pointer: fine) {
    .sf-card:hover .sf-card-thumb img {
        transform: scale(1.06);
    }
}

@media (prefers-reduced-motion: reduce) {
    .sf-card.is-enter { animation: none; }
    .sf-card,
    .sf-card-thumb img { transition: none; }
    .sf-card:hover { transform: none; }
    .sf-card:hover .sf-card-thumb img { transform: none; }
}

.sf-card-body {
    padding: 9px 11px 10px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex: 1;
    min-width: 0;
}
.sf-card-name {
    font-family: 'Inter Tight', sans-serif;
    font-size: 12px;
    font-weight: 600;
    color: #1a1a1a;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    overflow-wrap: anywhere;
}
.sf-card-author {
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    color: #666;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sf-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    margin-top: 5px;
    min-width: 0;
}
.sf-card-lic {
    font-family: 'Inter Tight', sans-serif;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(0,0,0,0.06);
    color: #444;
    letter-spacing: .02em;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.sf-card-polys {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: #aaa;
    flex-shrink: 0;
}

@media (max-width: 1024px) {
    .lib-header {
        grid-template-columns: auto minmax(0, 1fr);
        grid-template-areas:
            "logo actions"
            "search search";
        gap: 9px 12px;
        padding: 10px 14px;
    }
    .lib-logo { grid-area: logo; }
    .lib-search-wrap { grid-area: search; width: 100%; }
    .lib-header-actions {
        grid-area: actions;
        flex-wrap: wrap;
        row-gap: 6px;
    }
    .lib-statusbar {
        flex-wrap: wrap;
        justify-content: flex-start;
        padding: 7px 14px 4px;
    }
    .lib-status-txt {
        flex: 1 1 180px;
    }
    .lib-drag-hint {
        flex: 1 1 220px;
        text-align: left;
    }
    .sf-grid {
        grid-template-columns: repeat(auto-fill, minmax(min(100%, 180px), 1fr));
    }
}

@media (max-width: 640px) {
    #drop-overlay {
        height: 100dvh;
        overflow: hidden;
    }
    .lib-header {
        grid-template-columns: minmax(0, 1fr) auto;
        grid-template-areas:
            "logo actions"
            "search search";
        gap: 8px;
        padding: 8px 10px;
    }
    .lib-logo .tb-logo-crop { height: 40px; }
    .lib-logo .tb-logo-img  { height: 40px; }
    .lib-header-actions {
        flex-wrap: nowrap;
        gap: 5px;
    }
    .lib-nav-btn,
    .lib-upload-btn {
        width: 36px;
        min-width: 36px;
        height: 36px;
        justify-content: center;
        padding: 0;
    }
    .lib-nav-btn span,
    .lib-upload-btn span {
        display: none;
    }
    .lib-search-wrap {
        height: 42px;
        padding: 0 10px;
    }
    #sf-q {
        font-size: 16px;
    }
    .lib-statusbar {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: center;
        gap: 6px;
        padding: 7px 10px 4px;
    }
    .lib-drag-hint { display: none; }
    .lib-body { padding: 9px 9px 22px; }
    .sf-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }
    .sf-card {
        border-radius: 12px;
        box-shadow: 3px 3px 0 var(--color-text);
    }
    .sf-card-body {
        padding: 8px 9px 9px;
    }
    .sf-card-name {
        font-size: 12px;
        line-height: 1.25;
    }
    .sf-card-author,
    .sf-card-foot {
        font-size: 10px;
    }
    .sf-card-lic {
        max-width: 100%;
    }
}

@media (max-width: 380px) {
    .lib-header {
        padding-left: 8px;
        padding-right: 8px;
    }
    .lib-header-actions {
        gap: 4px;
    }
    .lib-nav-btn,
    .lib-upload-btn {
        width: 34px;
        min-width: 34px;
        height: 34px;
    }
    .sf-grid {
        grid-template-columns: 1fr;
    }
    .lib-sketchfab-credit {
        font-size: 0;
        gap: 0;
    }
    .lib-sketchfab-credit svg {
        width: 14px;
        height: 14px;
    }
}

.sf-spin-row {
    padding: 24px 0 8px;
    display: flex;
    justify-content: center;
}
.sf-spin-row[hidden] { display: none; }
.sf-load-more-row {
    display: flex;
    justify-content: center;
    padding: 18px 0 30px;
}
.sf-load-more-row[hidden] { display: none; }
.sf-load-more-btn {
    min-width: 148px;
    height: 40px;
    padding: 0 18px;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    background: var(--color-accent);
    color: #fff;
    box-shadow: 3px 3px 0 var(--color-text);
    font-family: 'Inter Tight', sans-serif;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: transform .2s cubic-bezier(.2,.8,.2,1), box-shadow .2s cubic-bezier(.2,.8,.2,1), background .2s cubic-bezier(.2,.8,.2,1);
}
@media (hover: hover) and (pointer: fine) {
    .sf-load-more-btn:hover {
        transform: translateY(-2px);
        background: var(--color-accent-dark);
        box-shadow: 5px 5px 0 var(--color-text);
    }
}
.sf-load-more-btn:disabled {
    cursor: default;
    opacity: .65;
    transform: none;
    box-shadow: 3px 3px 0 var(--color-text);
}
.sf-spinner {
    width: 28px;
    height: 28px;
    border: 2.5px solid rgba(37,99,235,0.18);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: sf-spin .7s linear infinite;
}
@keyframes sf-spin { to { transform: rotate(360deg); } }

.sf-empty {
    padding: 40px 20px;
    text-align: center;
    font-family: 'Inter Tight', sans-serif;
    font-size: 13px;
    color: #888;
}

/* ── Sketchfab error overlay ───────────────────────────────────────── */
.sf-error-overlay {
    position: absolute;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    background: rgba(246,244,238,0.75);
}
.sf-error-overlay[hidden] { display: none; }
.sf-error-card {
    max-width: 380px;
    width: 100%;
    text-align: center;
    background: var(--color-bg);
    border: 2px solid var(--color-text);
    border-radius: var(--radius-lg);
    box-shadow: 6px 6px 0 var(--color-text);
    padding: 36px 28px 28px;
}
.sf-error-logo { margin-bottom: 18px; }
.sf-error-logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
}
.sf-error-title {
    font-family: var(--font);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin: 0 0 8px;
}
.sf-error-msg {
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--color-text-sec);
    margin: 0 0 20px;
}
.sf-error-retry {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 24px;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: var(--color-accent);
    border: 2px solid var(--color-text);
    border-radius: var(--radius-btn);
    box-shadow: 3px 3px 0 var(--color-text);
    cursor: pointer;
    transition: transform 0.12s, box-shadow 0.12s;
}
.sf-error-retry:hover {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--color-text);
}
.sf-error-retry:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 var(--color-text);
}
.sf-error-sub {
    font-size: 12px;
    color: var(--color-text-sec);
    margin: 14px 0 0;
}
.sf-error-sub a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ── Format picker sheet ──────────────────────────────────────────────── */
#sf-picker {
    position: fixed;
    inset: 0;
    z-index: 9100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
#sf-picker[hidden] { display: none; }

.sfp-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26,25,22,0.7);
    backdrop-filter: blur(6px);
    animation: sfp-fade-in .18s ease;
}
@keyframes sfp-fade-in { from { opacity:0; } to { opacity:1; } }

.sfp-sheet {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 440px;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--color-bg);
    border: 2px solid var(--color-text);
    border-radius: var(--radius-card);
    padding: 20px 20px 24px;
    animation: sfp-pop-in .2s cubic-bezier(.22,1,.36,1);
    box-shadow: 6px 6px 0 var(--color-text);
}
@keyframes sfp-pop-in { from { opacity:0; transform:scale(0.95) translateY(8px); } to { opacity:1; transform:scale(1) translateY(0); } }

.sfp-x {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1.5px solid var(--color-text);
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: background .15s;
}
.sfp-x:hover { background: var(--color-surface); }

.sfp-top {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 18px;
}
.sfp-thumb {
    width: 68px;
    height: 68px;
    border-radius: var(--radius-card);
    border: 2px solid var(--color-text);
    background-size: cover;
    background-position: center;
    background-color: var(--color-surface);
    flex-shrink: 0;
}
.sfp-meta { flex: 1; min-width: 0; }
.sfp-name {
    font-family: 'Inter Tight', sans-serif;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 3px;
}
.sfp-author {
    font-family: 'Inter Tight', sans-serif;
    font-size: 12px;
    color: var(--color-text-sec);
    margin-bottom: 5px;
}
.sfp-lic {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--color-text);
    background: transparent;
    color: var(--color-text);
    letter-spacing: .03em;
}

.sfp-label {
    font-family: 'Inter Tight', sans-serif;
    font-size: 10px;
    font-weight: 700;
    color: var(--color-text-sec);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 10px;
}

.sfp-loading {
    display: flex;
    justify-content: center;
    padding: 20px 0;
}

.sfp-error {
    font-family: 'Inter Tight', sans-serif;
    font-size: 12px;
    color: #c00;
    padding: 12px 0;
}

.sfp-fmt-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: var(--radius-card);
    border: 2px solid var(--color-text);
    background: var(--color-bg);
    cursor: pointer;
    margin-bottom: 8px;
    transition: box-shadow .12s, transform .12s, background .12s;
    text-align: left;
    box-shadow: 3px 3px 0 var(--color-text);
}
.sfp-fmt-btn:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--color-accent-dark);
}
.sfp-fmt-btn:hover .sfp-fmt-label,
.sfp-fmt-btn:hover .sfp-fmt-note,
.sfp-fmt-btn:hover .sfp-fmt-size,
.sfp-fmt-btn:hover .sfp-fmt-right { color: #fff; }
.sfp-fmt-btn:hover .sfp-fmt-ext { background: #fff; color: var(--color-accent); }
.sfp-fmt-btn:active {
    transform: translate(1px, 1px);
    box-shadow: 2px 2px 0 var(--color-text);
}
.sfp-fmt-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.sfp-fmt-ext {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 5px;
    background: var(--color-text);
    color: var(--color-bg);
    letter-spacing: .04em;
    flex-shrink: 0;
}
.sfp-fmt-label {
    font-family: 'Inter Tight', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
}
.sfp-fmt-note {
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    color: var(--color-text-sec);
    margin-top: 1px;
}
.sfp-fmt-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    color: var(--color-text);
}
.sfp-fmt-size {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--color-text-sec);
}

/* ── Attribution badge (bottom-left in viewer) ────────────────────────── */
.sf-attribution {
    position: fixed;
    bottom: 60px;
    left: 14px;
    z-index: 500;
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 6px 10px 6px 12px;
    background: rgba(10,10,16,0.82);
    backdrop-filter: blur(8px);
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.08);
    animation: sf-attr-in .25s ease;
}
@keyframes sf-attr-in {
    from { opacity:0; transform:translateY(6px); }
    to   { opacity:1; transform:translateY(0); }
}
.sf-attr-text {
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    color: rgba(255,255,255,0.65);
}
.sf-attr-text strong { color: rgba(255,255,255,0.9); font-weight:600; }
.sf-attr-lic {
    font-family: 'Inter Tight', sans-serif;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.75);
    text-decoration: none;
}
.sf-attr-lic:hover { background: rgba(255,255,255,0.18); }
.sf-attr-close {
    background: none;
    border: none;
    color: rgba(255,255,255,0.4);
    cursor: pointer;
    font-size: 15px;
    line-height: 1;
    padding: 0 0 0 2px;
    display: flex;
    align-items: center;
}
.sf-attr-close:hover { color: rgba(255,255,255,0.75); }

@media (max-width: 760px) {
    .sf-attribution { bottom: 70px; left: 10px; }
}

/* ── Welcome hero — workflow diagram (home) ──────────────────── */
.welcome-hero {
    padding: 8px 0 18px;
    overflow: hidden;
    transition: max-height .4s ease, opacity .25s ease, padding .3s ease, margin .3s ease;
    max-height: 720px;
}
.welcome-hero.is-hidden {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin: 0;
    pointer-events: none;
}

.welcome-card {
    position: relative;
    background:
        radial-gradient(circle at 12% 18%, rgba(37,99,235,0.06), transparent 55%),
        radial-gradient(circle at 88% 85%, rgba(244,114,182,0.06), transparent 55%),
        #fff;
    border: 1.5px solid rgba(26,25,22,0.10);
    border-radius: 22px;
    box-shadow: 6px 6px 0 rgba(26,25,22,0.06);
    padding: 24px 28px 26px;
    overflow: hidden;
    animation: heroPop .55s cubic-bezier(.2,.9,.3,1.2) both;
}
@keyframes heroPop {
    0%   { transform: translateY(-10px) scale(0.99); opacity: 0; }
    100% { transform: translateY(0) scale(1); opacity: 1; }
}

/* Decorative drifting dots */
.welcome-card::before,
.welcome-card::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: var(--color-accent);
    opacity: 0.18;
    pointer-events: none;
}
.welcome-card::before {
    width: 6px; height: 6px;
    top: 22%; left: 5%;
    animation: heroDot 2.4s ease-in-out infinite;
}
.welcome-card::after {
    width: 4px; height: 4px;
    bottom: 18%; right: 6%;
    animation: heroDot 2.8s ease-in-out 0.5s infinite;
}

/* Center Shams3D hub */
.welcome-shams3d-hub {
    grid-area: shams3d;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 0;
    padding: 16px 20px;
    z-index: 2;
}
.welcome-shams3d-glow {
    position: absolute;
    inset: -28px;
    border-radius: 50%;
    background:
        radial-gradient(circle, rgba(37,99,235,0.22) 0%, rgba(37,99,235,0.08) 35%, transparent 70%);
    z-index: -1;
    animation: glowPulse 3.5s ease-in-out infinite;
    pointer-events: none;
}
@keyframes glowPulse {
    0%, 100% { transform: scale(1);   opacity: 0.7; }
    50%      { transform: scale(1.12); opacity: 1; }
}
.welcome-eyebrow {
    font-family: var(--font-script, 'Caveat', cursive);
    font-size: 22px;
    font-weight: 600;
    line-height: 1;
    color: var(--color-accent);
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}
.welcome-title {
    margin: 0;
    line-height: 0.85;
}
.welcome-shams3d {
    display: inline-block;
    font-family: var(--font-script, 'Caveat', cursive);
    font-size: 88px;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 1px;
    line-height: 1;
    transform-origin: 50% 70%;
    animation: shams3dPop .9s cubic-bezier(.34,1.56,.64,1) .15s both;
    text-shadow: 0 2px 0 rgba(37,99,235,0.10);
}
@keyframes shams3dPop {
    0%   { transform: scale(0.4) rotate(-8deg); opacity: 0; }
    60%  { transform: scale(1.08) rotate(2deg); opacity: 1; }
    100% { transform: scale(1) rotate(0); }
}
.welcome-sub {
    font-family: var(--font-script, 'Caveat', cursive);
    font-size: 18px;
    font-weight: 500;
    color: var(--color-text-sec);
    line-height: 1.2;
    margin: 2px 0 0;
    letter-spacing: 0.3px;
}
@keyframes heroDot {
    0%,100% { transform: scale(1);   opacity: 0.9; box-shadow: 0 0 0 4px rgba(37,99,235,0.12); }
    50%     { transform: scale(1.25); opacity: 1;  box-shadow: 0 0 0 7px rgba(37,99,235,0.04); }
}

/* Orbital flow diagram — true circle, Shams3D at center, steps at N/E/S/W */
.welcome-orbit {
    position: relative;
    width: 100%;
    max-width: 580px;
    aspect-ratio: 1 / 1;
    margin: 0 auto;
}

.orbit-ring {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    color: var(--color-accent);
    pointer-events: none;
    z-index: 1;
}

.orbit-arc {
    stroke-dasharray: 260;
    stroke-dashoffset: 260;
    animation: arcDraw 1.1s ease-out forwards;
}
.orbit-arc-1 { animation-delay: 0.4s; }
.orbit-arc-2 { animation-delay: 0.7s; }
.orbit-arc-3 { animation-delay: 1.0s; }
.orbit-arc-4 { animation-delay: 1.3s; }
@keyframes arcDraw {
    to { stroke-dashoffset: 0; }
}

/* Center Shams3D hub */
.welcome-shams3d-hub {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
}

/* Steps at cardinal positions around the ring */
.orbit-step {
    position: absolute;
    z-index: 2;
    width: 170px;
}
.orbit-step-n { top: 0;    left: 50%; transform: translateX(-50%); }
.orbit-step-e { right: 0;  top: 50%;  transform: translateY(-50%); }
.orbit-step-s { bottom: 0; left: 50%; transform: translateX(-50%); }
.orbit-step-w { left: 0;   top: 50%;  transform: translateY(-50%); }

.flow-step {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: flowFloat 4.2s ease-in-out infinite;
}
.flow-step-1 { animation-delay: 0s; }
.flow-step-2 { animation-delay: 0.5s; }
.flow-step-3 { animation-delay: 1s; }
.flow-step-4 { animation-delay: 1.5s; }
@keyframes flowFloat {
    0%, 100% { transform: translate(-50%, 0); }
    50%      { transform: translate(-50%, -5px); }
}
.orbit-step-e.flow-step, .orbit-step-w.flow-step {
    animation-name: flowFloatX;
}
@keyframes flowFloatX {
    0%, 100% { transform: translate(0, -50%); }
    50%      { transform: translate(0, calc(-50% - 5px)); }
}

.flow-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 160px;
}
.flow-or {
    font-family: var(--font-script, 'Caveat', cursive);
    font-size: 18px;
    color: var(--color-text-sec);
    line-height: 1;
}

/* Borderless floating items — icon + label only */
.flow-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-text);
    transition: transform .15s;
}
.flow-item-link { cursor: pointer; }
.flow-item-link:hover { transform: translateY(-2px); }
.flow-item-link:hover .flow-label { color: var(--color-accent); }

.flow-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    color: var(--color-text);
    filter: drop-shadow(0 2px 3px rgba(26,25,22,0.18));
}
.flow-icon-big { width: 64px; height: 48px; }
.flow-icon svg { width: 100%; height: 100%; display: block; }

.flow-icon-float {
    animation: iconFloat 3s ease-in-out infinite;
}
.flow-step-2 .flow-icon-float { animation-delay: 0.2s; }
.flow-step-3 .flow-icon-float:nth-child(2) { animation-delay: 0.5s; }
.flow-step-4 .social-tt       { animation-delay: 0.5s; }
@keyframes iconFloat {
    0%, 100% { transform: translateY(0) rotate(-3deg); }
    50%      { transform: translateY(-3px) rotate(3deg); }
}

.flow-icons-row {
    display: flex;
    gap: 14px;
    align-items: center;
}

.social-ig { color: #e1306c; }
.social-tt { color: #1a1a1a; }

.flow-label {
    font-family: var(--font-script, 'Caveat', cursive);
    font-size: 19px;
    font-weight: 600;
    text-align: center;
    line-height: 1.1;
    color: var(--color-text);
    letter-spacing: 0.3px;
    max-width: 160px;
    transition: color .15s;
}

/* Responsive — keep the orbital circle on every screen, just scale it */
@media (max-width: 1100px) {
    .welcome-shams3d { font-size: 78px; }
}
@media (max-width: 720px) {
    .welcome-orbit { max-width: 480px; }
    .orbit-step { width: 140px; }
    .welcome-shams3d { font-size: 60px; }
    .welcome-eyebrow { font-size: 18px; }
    .welcome-sub { font-size: 15px; }
    .flow-icon { width: 38px; height: 38px; }
    .flow-icon-big { width: 54px; height: 40px; }
    .flow-label { font-size: 15px; max-width: 130px; }
    .flow-icons-row { gap: 10px; }
    .flow-stack { width: 130px; gap: 8px; }
    .flow-or { font-size: 16px; }
    .welcome-shams3d-glow { inset: -22px; }
}
@media (max-width: 540px) {
    .welcome-hero { padding: 10px 6px 0; }
    .welcome-card { padding: 16px 12px 14px; border-radius: 18px; }
    .welcome-orbit { max-width: 380px; }
    .orbit-step { width: 110px; }
    .welcome-shams3d { font-size: 46px; }
    .welcome-eyebrow { font-size: 15px; }
    .welcome-sub { font-size: 13px; }
    .flow-icon { width: 32px; height: 32px; }
    .flow-icon-big { width: 44px; height: 32px; }
    .flow-label { font-size: 13px; max-width: 110px; line-height: 1.05; }
    .flow-icons-row { gap: 8px; }
    .flow-stack { width: 108px; gap: 6px; }
    .flow-or { font-size: 14px; }
    .welcome-shams3d-glow { inset: -16px; }
}
@media (max-width: 420px) {
    .welcome-card { padding: 14px 10px 12px; }
    .welcome-orbit { max-width: 320px; }
    .orbit-step { width: 96px; }
    .welcome-shams3d { font-size: 40px; }
    .welcome-eyebrow { font-size: 13px; }
    .welcome-sub { font-size: 11.5px; }
    .flow-icon { width: 28px; height: 28px; }
    .flow-icon-big { width: 38px; height: 28px; }
    .flow-label { font-size: 12px; max-width: 96px; }
    .flow-icons-row { gap: 6px; }
    .flow-stack { width: 96px; gap: 4px; }
    .flow-or { font-size: 13px; }
    .welcome-shams3d-glow { inset: -10px; }
}
@media (max-width: 340px) {
    .welcome-orbit { max-width: 280px; }
    .orbit-step { width: 84px; }
    .welcome-shams3d { font-size: 34px; }
    .welcome-eyebrow { font-size: 12px; }
    .flow-icon { width: 24px; height: 24px; }
    .flow-icon-big { width: 32px; height: 24px; }
    .flow-label { font-size: 11px; max-width: 84px; }
    .flow-stack { width: 84px; }
}
@media (prefers-reduced-motion: reduce) {
    .welcome-card,
    .welcome-shams3d,
    .welcome-shams3d-glow,
    .welcome-dot,
    .flow-step,
    .flow-icon-float,
    .orbit-ring,
    .orbit-arc,
    .welcome-card::before,
    .welcome-card::after { animation: none; }
    .orbit-arc { stroke-dashoffset: 0; }
}

/* ── Upload page (/upload) ───────────────────────────────────── */
#upload-page {
    display: none;
    position: fixed;
    inset: 0;
    background: #f6f4ee;
    z-index: 8;
    flex-direction: column;
}
html.upload-mode #drop-overlay { display: none !important; }
html.upload-mode #upload-page { display: flex; }
html.upload-mode #topbar,
html.upload-mode #controls,
html.upload-mode #kf-strip,
html.upload-mode #panel,
html.upload-mode #cinematic-panel,
html.upload-mode #lighting-panel,
html.upload-mode #light-controls,
html.upload-mode #parts-panel { display: none !important; }

.up-header-spacer { min-width: 0; }

.up-body {
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
}

.up-drop {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    width: 100%;
    max-width: 620px;
    min-height: 380px;
    padding: 56px 32px;
    border: 2px dashed rgba(26,25,22,0.25);
    border-radius: 18px;
    background: rgba(255,255,255,0.55);
    cursor: pointer;
    transition: border-color .25s cubic-bezier(.2,.8,.2,1), background .25s cubic-bezier(.2,.8,.2,1), transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s cubic-bezier(.2,.8,.2,1);
    text-align: center;
}
.up-drop:hover {
    border-color: var(--color-accent);
    background: rgba(255,255,255,0.85);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px -12px rgba(26,25,22,0.18);
}
.up-drop.is-dragover {
    border-color: var(--color-accent);
    background: rgba(37,99,235,0.06);
    transform: scale(1.01);
}

.up-drop-icon {
    width: 92px;
    height: 92px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid rgba(26,25,22,0.12);
    display: grid;
    place-items: center;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.up-drop-title {
    font-family: 'Inter Tight', sans-serif;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--color-text);
}

.up-drop-sub {
    font-size: 14px;
    color: var(--color-text-sec);
    margin-top: -4px;
}

.up-browse-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 22px;
    border-radius: 10px;
    background: #1a1a1a;
    color: #fff;
    font-family: 'Inter Tight', sans-serif;
    font-size: 13.5px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background .2s cubic-bezier(.2,.8,.2,1), transform .2s cubic-bezier(.2,.8,.2,1);
    margin-top: 4px;
}
.up-drop:hover .up-browse-btn { background: var(--color-accent); transform: translateY(-2px); }

.up-formats {
    margin-top: 14px;
    font-size: 12px;
    color: var(--color-text-sec);
    letter-spacing: 0.3px;
}

@media (max-width: 560px) {
    .up-body { padding: 18px 14px; }
    .up-drop {
        min-height: 320px;
        padding: 40px 20px;
        border-radius: 14px;
    }
    .up-drop-icon { width: 72px; height: 72px; }
    .up-drop-title { font-size: 18px; }
}

/* ── Tour ───────────────────────────────────────────────────────────── */
.tour-mask {
    position: fixed;
    inset: 0;
    z-index: 9998;
    background: rgba(0,0,0,0.55);
    pointer-events: auto;
    cursor: pointer;
}
.tour-spotlight {
    position: fixed;
    z-index: 9999;
    border: 2px solid var(--color-accent, #ff7a2d);
    border-radius: 10px;
    box-shadow:
        0 0 0 4px rgba(255,122,45,0.25),
        0 0 0 9999px rgba(0,0,0,0.55);
    pointer-events: none;
    transition: top .25s, left .25s, width .25s, height .25s;
}
body.tour-active .tour-mask { background: transparent; }
.tour-tooltip {
    position: fixed;
    z-index: 10000;
    width: min(320px, calc(100vw - 24px));
    background: #f6f4ee;
    color: var(--color-text);
    border: 2px solid var(--color-text);
    border-radius: var(--radius-card, 8px);
    box-shadow: 4px 4px 0 var(--color-text);
    padding: 14px 14px 12px;
    font-family: var(--font);
    transition: top .25s, left .25s;
}
.tour-tip-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--color-text-sec, #6b6b6b);
}
.tour-tip-step { font-weight: 700; }
.tour-tip-skip {
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    font-size: 11px;
    color: var(--color-text-sec, #6b6b6b);
    text-decoration: underline;
    padding: 0;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.tour-tip-skip:hover { color: var(--color-text); }
.tour-tip-body {
    font-size: 14px;
    line-height: 1.45;
    margin: 0 0 12px;
    color: var(--color-text);
}
.tour-tip-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}
.tour-tip-btn {
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    padding: 7px 14px;
    border: 2px solid var(--color-text);
    border-radius: 6px;
    background: #fff;
    color: var(--color-text);
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--color-text);
    transition: transform .1s, box-shadow .1s, background .15s;
}
.tour-tip-btn:hover { background: var(--color-text); color: #fff; }
.tour-tip-btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--color-text); }
.tour-tip-btn.is-primary { background: var(--color-text); color: #fff; }
.tour-tip-btn.is-primary:hover { background: var(--color-accent, #ff7a2d); border-color: var(--color-accent, #ff7a2d); color: #fff; }

.tour-prompt {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9997;
    width: min(280px, calc(100vw - 24px));
    background: #f6f4ee;
    border: 2px solid var(--color-text);
    border-radius: var(--radius-card, 8px);
    box-shadow: 4px 4px 0 var(--color-text);
    padding: 12px 14px;
    font-family: var(--font);
    animation: tour-prompt-in .3s ease-out;
}
@keyframes tour-prompt-in {
    from { transform: translateY(20px); opacity: 0; }
    to   { transform: translateY(0);     opacity: 1; }
}
.tour-prompt-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; color: var(--color-text); }
.tour-prompt-sub   { font-size: 12px; color: var(--color-text-sec, #6b6b6b); margin-bottom: 10px; }
.tour-prompt-actions { display: flex; gap: 6px; justify-content: flex-end; }

@media (max-width: 640px) {
    .tour-tooltip { width: calc(100vw - 20px); }
    .tour-prompt  { bottom: 12px; right: 12px; left: 12px; width: auto; }
}