:root{
  --ink:#14161A; --panel:#1D2026; --panel-2:#23272F; --line:#2C313A;
  --text:#E8EAED; --muted:#8B93A1;
  --select:#FF9838;
  --ax-x:#FF5470; --ax-y:#7BE07B; --ax-z:#4DA6FF;
  --radius:10px; --dock-h:64px;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden;background:var(--ink);color:var(--text);
  font-family:'Space Grotesk',system-ui,sans-serif;font-size:14px;user-select:none;-webkit-user-select:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font-family:'IBM Plex Mono',monospace}

#app{position:fixed;inset:0;display:flex;flex-direction:column}
canvas{display:block;touch-action:none}
body.grabbing canvas{cursor:grabbing}
#viewport{flex:1;position:relative;min-height:0}

/* ---------- header ---------- */
#topbar{height:48px;display:flex;align-items:center;gap:12px;padding:0 14px;
  background:var(--panel);border-bottom:1px solid var(--line);z-index:20}
#brand{display:flex;align-items:center;gap:8px;font-weight:600;letter-spacing:.02em}
#brand .cube{width:14px;height:14px;border:2px solid var(--select);transform:rotate(45deg);border-radius:2px}
#scene-stats{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--muted)}
#topbar .spacer{flex:1}
.chip-btn{padding:6px 12px;border:1px solid var(--line);border-radius:8px;font-size:12.5px;background:var(--panel-2)}
.chip-btn:hover{border-color:var(--muted)}
.chip-btn:active{transform:translateY(1px)}
.chip-btn:disabled{opacity:.35;pointer-events:none}
.chip-btn.icon{padding:6px 10px;font-size:15px;line-height:1}

/* ---------- desktop rail ---------- */
#rail{position:absolute;left:12px;top:12px;z-index:10;display:flex;flex-direction:column;gap:10px}
.rail-group{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:6px;display:flex;flex-direction:column;gap:4px;box-shadow:0 4px 16px rgba(0,0,0,.35)}
.rail-label{font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:4px 6px 2px}
.tool{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:7px;font-size:13px;text-align:left}
.tool svg{width:16px;height:16px;flex:none}
.tool:hover{background:var(--panel-2)}
.tool.active{background:rgba(255,152,56,.14);color:var(--select)}
.tool.active svg *{stroke:var(--select)}
/* two-column grid for the Add + Tool sections */
.rail-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.rail-grid .tool{padding:7px 8px;gap:7px;font-size:12px;width:auto;min-width:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail-grid .tool svg{width:15px;height:15px}
/* grouped tool buttons (Mesh, More Tools…) occupy a grid cell and fill it */
.rail-grid .tool-group{display:flex}
.rail-grid .tool-group > .tool{flex:1;width:100%}

/* ---------- properties panel ---------- */
#props{position:absolute;right:12px;top:12px;bottom:12px;width:248px;z-index:10;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;overflow-y:auto;box-shadow:0 4px 16px rgba(0,0,0,.35)}
#props h2{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.empty{color:var(--muted);font-size:13px;line-height:1.5;padding:8px 0}
/* object list / outliner (shown when nothing is selected) */
.obj-list-head{display:flex;align-items:center;justify-content:space-between;
  font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.obj-sort{font-size:10.5px;letter-spacing:.04em;color:var(--muted);padding:4px 8px;
  border:1px solid var(--line);border-radius:6px;text-transform:none}
.obj-sort:hover{border-color:var(--muted);color:var(--text)}
.obj-list{display:flex;flex-direction:column;gap:3px}
.obj-row{display:flex;align-items:center;gap:8px;width:100%;padding:7px 9px;border-radius:7px;
  text-align:left;background:var(--panel-2);border:1px solid transparent;transition:border-color .12s ease,background .12s ease}
.obj-row:hover{border-color:var(--line);background:var(--panel)}
.obj-row.is-hidden .obj-name,.obj-row.is-hidden .obj-dot{opacity:.4}
.obj-eye{flex:none;width:20px;height:20px;display:flex;align-items:center;justify-content:center;
  color:var(--muted);border-radius:5px}
.obj-eye svg{width:15px;height:15px}
.obj-eye:hover{color:var(--select);background:rgba(255,152,56,.12)}
.obj-row.is-hidden .obj-eye{color:var(--select)}
.obj-dot{width:12px;height:12px;border-radius:4px;flex:none;box-shadow:0 0 0 1px rgba(255,255,255,.08) inset}
.obj-name{flex:1;font-size:13px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.obj-type{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;flex:none}
.obj-del{flex:none;width:20px;height:20px;display:flex;align-items:center;justify-content:center;
  border-radius:5px;color:var(--muted);font-size:12px;opacity:0;transition:opacity .12s ease}
.obj-row:hover .obj-del{opacity:1}
body.mobile .obj-del{opacity:.7}
.obj-del:hover{background:rgba(255,84,112,.16);color:#FF5470}
.obj-list-hint{font-size:11px;color:var(--muted);margin-top:12px;line-height:1.5}
.prop-row{margin-bottom:14px}
.prop-row label{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.name-input{width:100%;background:var(--panel-2);border:1px solid var(--line);border-radius:7px;
  color:var(--text);padding:7px 9px;font-size:13px;font-family:'Space Grotesk',sans-serif}
.name-input:focus{outline:none;border-color:var(--select)}

.vec3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}
.axis-field{position:relative}
.axis-field input{width:100%;background:var(--panel-2);border:1px solid var(--line);border-radius:7px;
  color:var(--text);padding:7px 6px 7px 20px;font-size:12px}
.axis-field input:focus{outline:none}
.axis-field::before{content:attr(data-ax);position:absolute;left:7px;top:50%;transform:translateY(-50%);
  font-family:'IBM Plex Mono',monospace;font-size:10px;font-weight:500;pointer-events:none}
.axis-field[data-ax="X"]::before{color:var(--ax-x)}
.axis-field[data-ax="Y"]::before{color:var(--ax-y)}
.axis-field[data-ax="Z"]::before{color:var(--ax-z)}
.axis-field[data-ax="X"] input:focus{border-color:var(--ax-x)}
.axis-field[data-ax="Y"] input:focus{border-color:var(--ax-y)}
.axis-field[data-ax="Z"] input:focus{border-color:var(--ax-z)}

.swatch-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}
.swatch{aspect-ratio:1;border-radius:7px;border:2px solid transparent}
.swatch.active{border-color:var(--text)}
.action-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:4px}
.action-btn{padding:9px 0;border-radius:8px;font-size:13px;border:1px solid var(--line);background:var(--panel-2)}
.action-btn:hover{border-color:var(--muted)}
.action-btn.danger{color:#FF7A7A}
.action-btn.danger:hover{border-color:#FF7A7A}

/* ---------- hint + lift chip ---------- */
#hint{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);z-index:10;
  font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--muted);
  background:rgba(20,22,26,.8);border:1px solid var(--line);border-radius:20px;padding:6px 14px;
  white-space:nowrap;backdrop-filter:blur(6px);pointer-events:none;transition:opacity .3s}
#hint.gone{opacity:0}
#lift-chip{display:none;position:absolute;left:50%;transform:translateX(-50%);bottom:14px;z-index:11;
  padding:8px 16px;border-radius:20px;font-size:12px;border:1px solid var(--line);
  background:rgba(29,32,38,.9);color:var(--muted);backdrop-filter:blur(6px)}
#lift-chip.on{border-color:var(--ax-y);color:var(--ax-y)}

/* ---------- file menu + toast ---------- */
#file-menu{position:fixed;right:12px;top:54px;z-index:40;background:var(--panel);border:1px solid var(--line);
  border-radius:10px;min-width:220px;padding:6px;display:none;box-shadow:0 8px 24px rgba(0,0,0,.45)}
#file-menu.open{display:block}
.menu-label{font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:6px 8px 3px}
.menu-item{display:block;width:100%;padding:10px;border-radius:7px;font-size:13px;text-align:left}
.menu-item:hover{background:var(--panel-2)}
.menu-item.danger{color:#FF7A7A}
.menu-sep{height:1px;background:var(--line);margin:6px 4px}
body.mobile #file-menu{top:50px}

#toast{position:fixed;left:50%;bottom:84px;transform:translateX(-50%) translateY(8px);z-index:80;
  background:var(--panel-2);border:1px solid var(--line);border-radius:20px;padding:8px 16px;
  font-size:12.5px;opacity:0;pointer-events:none;transition:.25s}
#toast.show{opacity:1;transform:translateX(-50%)}

/* ---------- mobile dock + sheets ---------- */
#dock{display:none;height:var(--dock-h);background:var(--panel);border-top:1px solid var(--line);
  padding:6px 8px calc(6px + env(safe-area-inset-bottom));z-index:20;gap:4px}
.dock-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  border-radius:10px;font-size:10px;color:var(--muted)}
.dock-btn svg{width:20px;height:20px}
.dock-btn.active{color:var(--select);background:rgba(255,152,56,.12)}
.dock-btn.active svg *{stroke:var(--select)}

/* ---------- grouped tools: expanding flyout ---------- */
.tool-group{position:relative;display:flex;flex-direction:column}
#dock .tool-group{flex:1;flex-direction:row}
.grouped{position:relative}
.grouped::after{content:'';position:absolute;right:5px;bottom:5px;width:0;height:0;
  border-left:4px solid transparent;border-top:4px solid var(--muted);
  transform:rotate(-45deg);opacity:.7}
.flyout{position:absolute;display:flex;gap:8px;padding:6px;z-index:15;
  background:var(--panel);border:1px solid var(--line);border-radius:26px;
  box-shadow:0 6px 18px rgba(0,0,0,.4);
  opacity:0;pointer-events:none;
  transition:opacity .18s ease, transform .18s ease}
.flyout.open{opacity:1;pointer-events:auto}
#rail .flyout{left:calc(100% + 12px);top:50%;transform:translateY(-50%) scale(.92)}
#rail .flyout.open{transform:translateY(-50%) scale(1)}
#dock .flyout{left:50%;bottom:calc(100% + 10px);transform:translate(-50%,5px) scale(.92)}
#dock .flyout.open{transform:translate(-50%,0) scale(1)}
.sub-tool{width:40px;height:40px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--panel-2);border:1px solid var(--line);
  opacity:0;transform:scale(.5);
  transition:opacity .18s ease, transform .2s cubic-bezier(.34,1.45,.4,1),
    border-color .15s ease, background .15s ease}
.flyout.open .sub-tool{opacity:1;transform:scale(1)}
.flyout.open .sub-tool:nth-child(2){transition-delay:.045s}
.flyout.open .sub-tool:nth-child(3){transition-delay:.09s}
.flyout.open .sub-tool:nth-child(4){transition-delay:.135s}
.flyout.open .sub-tool:nth-child(5){transition-delay:.18s}
.flyout.open .sub-tool:nth-child(6){transition-delay:.225s}
#dock .flyout{flex-wrap:wrap;justify-content:center;max-width:150px}
.sub-tool svg{width:18px;height:18px}
.sub-tool:hover{border-color:var(--muted)}
.sub-tool.active{border-color:var(--select);background:rgba(255,152,56,.14)}
.sub-tool.active svg *{stroke:var(--select)}
body.mobile .sub-tool{width:46px;height:46px}

.sheet{position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--panel);
  border-top:1px solid var(--line);border-radius:16px 16px 0 0;
  padding:10px 16px calc(16px + env(safe-area-inset-bottom));
  transform:translateY(105%);transition:transform .28s cubic-bezier(.32,.72,.28,1);
  max-height:70vh;overflow-y:auto}
.sheet.open{transform:translateY(0)}
.sheet .grabber{width:36px;height:4px;border-radius:2px;background:var(--line);margin:0 auto 12px}
.sheet h2{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.add-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.add-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px 8px;
  background:var(--panel-2);border:1px solid var(--line);border-radius:12px;font-size:12px}
.add-card:active{border-color:var(--select);color:var(--select)}
.add-card svg{width:26px;height:26px}
#scrim{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:25;opacity:0;pointer-events:none;transition:opacity .25s}
#scrim.show{opacity:1;pointer-events:auto}

/* ---------- responsive switch ---------- */
@media (max-width:767px), (pointer:coarse) and (max-width:1024px){
  body.mobile #rail,body.mobile #props,body.mobile #hint{display:none}
  body.mobile #dock{display:flex}
  body.mobile #topbar{height:44px;padding:0 12px}
  body.mobile #lift-chip.visible{display:block;bottom:calc(var(--dock-h) + 14px)}
}

/* ---------- topbar project name ---------- */
#project-name{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;min-width:0;max-width:26vw}

/* ---------- project lobby ---------- */
#lobby{position:fixed;inset:0;z-index:60;background:var(--ink);display:none;overflow-y:auto}
#lobby.open{display:block}
.lobby-inner{max-width:980px;margin:0 auto;padding:28px 20px 60px}
.lobby-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:34px;flex-wrap:wrap}
#brand-lg{display:flex;align-items:center;gap:10px;font-weight:600;font-size:18px;letter-spacing:.02em}
#brand-lg .cube{width:16px;height:16px;border:2px solid var(--select);transform:rotate(45deg);border-radius:2px}
.lobby-links{display:flex;gap:10px}
.lobby-links a,.lobby-links button{color:var(--muted);font-size:12.5px;text-decoration:none;border:1px solid var(--line);
  border-radius:8px;padding:6px 12px;background:var(--panel)}
.lobby-links a:hover,.lobby-links button:hover{color:var(--text);border-color:var(--muted)}
#lobby h1{font-size:15px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  font-weight:500;margin-bottom:16px}
#project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.proj-card{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;cursor:pointer;text-align:left;transition:border-color .15s ease, transform .15s ease}
.proj-card:hover{border-color:var(--muted);transform:translateY(-2px)}
.proj-card .thumb{aspect-ratio:16/10;background:var(--panel-2);display:flex;align-items:center;
  justify-content:center;border-bottom:1px solid var(--line)}
.proj-card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.proj-card .thumb svg{width:44px;height:44px}
.proj-card .thumb.plus{font-size:34px;color:var(--muted);font-weight:300}
.proj-card.new{border-style:dashed}
.proj-card.new:hover .thumb.plus{color:var(--select)}
.proj-card .meta{padding:10px 12px 12px}
.proj-card .pname{font-size:13.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.proj-card .pdate{font-size:11px;color:var(--muted);margin-top:3px;font-family:'IBM Plex Mono',monospace}
.pname-input{width:100%;background:var(--panel-2);border:1px solid var(--select);border-radius:7px;
  color:var(--text);padding:6px 8px;font-size:13px;font-family:'Space Grotesk',sans-serif;outline:none}
.pacts{position:absolute;top:8px;right:8px;display:flex;gap:6px}
.pact{padding:4px 8px;border-radius:7px;font-size:11px;
  background:rgba(20,22,26,.75);border:1px solid var(--line);color:var(--muted);backdrop-filter:blur(4px)}
.pact:hover{color:var(--text);border-color:var(--muted)}
.pdel:hover,.pdel.confirm{color:#FF7A7A;border-color:#FF7A7A}

/* ---------- settings modal ---------- */
#settings{position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.5);
  display:none;align-items:center;justify-content:center;padding:20px}
#settings.open{display:flex}
.settings-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:18px;width:100%;max-width:420px;box-shadow:0 12px 32px rgba(0,0,0,.5)}
.settings-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.settings-head h2{font-size:14px;font-weight:600;letter-spacing:.02em}
.settings-close{padding:4px 9px;border-radius:7px;font-size:12px;color:var(--muted);
  border:1px solid var(--line);background:var(--panel-2)}
.settings-close:hover{color:var(--text);border-color:var(--muted)}
.settings-label{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);margin-bottom:10px}
.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.theme-opt{display:flex;flex-direction:column;gap:8px;padding:8px;border-radius:11px;
  border:1px solid var(--line);background:var(--panel-2);font-size:12px;color:var(--muted);
  transition:border-color .15s ease}
.theme-opt:hover{border-color:var(--muted)}
.theme-opt.active{border-color:var(--select);color:var(--text)}
.theme-preview{aspect-ratio:16/11;border-radius:7px;border:1px solid rgba(255,255,255,.06)}

/* ---------- settings: project-mode sub label ---------- */
.theme-opt .sub{font-size:10px;color:var(--muted);margin-top:-4px}

/* ---------- live preview mini-HUD ---------- */
#phud{position:absolute;left:12px;bottom:14px;z-index:12;display:flex;align-items:center}
#phud-panel{position:relative;width:210px;height:136px;overflow:visible;border-radius:10px;
  border:1px solid var(--line);background:transparent;
  transition:opacity .2s ease, border-color .2s ease}
#phud-panel.animating{transition:width .28s cubic-bezier(.32,.72,.28,1), opacity .2s ease, border-color .2s ease}
#phud.closed #phud-panel{width:0 !important;opacity:0;border-color:transparent}
#phud-view{position:absolute;inset:0;overflow:hidden;border-radius:10px}
#phud-tag{position:absolute;top:6px;left:8px;font-family:'IBM Plex Mono',monospace;font-size:9.5px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--muted);pointer-events:none;
  background:rgba(20,22,26,.55);padding:2px 6px;border-radius:5px;backdrop-filter:blur(3px)}
#phud-tab{width:20px;height:46px;margin-left:6px;border-radius:7px;font-size:12px;
  background:var(--panel);border:1px solid var(--line);color:var(--muted)}
#phud-tab:hover{color:var(--text);border-color:var(--muted)}
body.mobile #phud{bottom:calc(var(--dock-h) + 12px)}

/* ---------- file menu: expanding export submenu ---------- */
.menu-sub{overflow:hidden;max-height:0;transition:max-height .22s ease}
.menu-sub.open{max-height:240px}
.menu-sub .menu-item{padding:9px 10px 9px 26px;font-size:12.5px;color:var(--muted)}
.menu-sub .menu-item:hover{color:var(--text)}

/* ---------- slice tool overlay ---------- */
#slice-overlay{position:absolute;inset:0;width:100%;height:100%;z-index:9;
  pointer-events:none;display:none}
#slice-overlay.active{display:block}
#slice-line{stroke:var(--select);stroke-width:2;stroke-dasharray:7 6;stroke-linecap:round}

/* ---------- settings: toggle switch ---------- */
.settings-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;
  padding:10px 2px;border-radius:8px}
.settings-toggle-name{font-size:13px;color:var(--text)}
.settings-switch{width:38px;height:22px;border-radius:11px;background:var(--panel-2);
  border:1px solid var(--line);position:relative;transition:background .18s ease, border-color .18s ease;flex:none}
.settings-knob{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;
  background:var(--muted);transition:transform .18s ease, background .18s ease}
.settings-toggle.on .settings-switch{background:rgba(255,152,56,.25);border-color:var(--select)}
.settings-toggle.on .settings-knob{transform:translateX(16px);background:var(--select)}

/* ---------- preview HUD: resize handle ---------- */
#phud-resize{position:absolute;top:-3px;right:-3px;width:16px;height:16px;z-index:2;
  cursor:nesw-resize;touch-action:none;display:flex;align-items:flex-start;justify-content:flex-end}
#phud-resize::after{content:'';width:9px;height:9px;border-top:2px solid var(--muted);
  border-right:2px solid var(--muted);border-radius:0 3px 0 0;opacity:.7}
#phud-resize:hover::after{border-color:var(--select);opacity:1}
#phud.closed #phud-resize{display:none}

/* ---------- properties: multi-selection note ---------- */
.multi-note{background:rgba(255,152,56,.12);border:1px solid rgba(255,152,56,.4);
  border-radius:8px;padding:8px 10px;font-size:11.5px;line-height:1.5;color:var(--text);margin-bottom:14px}

/* ---------- lobby: local folder bar ---------- */
#folder-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:10px 14px;margin-bottom:18px;font-size:12.5px}
.folder-status{color:var(--muted)}
.folder-status strong{color:var(--text);font-weight:500}
.folder-btn{padding:6px 12px;border:1px solid var(--line);border-radius:8px;
  font-size:12px;color:var(--text);background:var(--panel-2)}
.folder-btn:hover{border-color:var(--muted)}
.folder-btn.primary{border-color:var(--select);color:var(--select)}
.folder-btn.primary:hover{background:rgba(255,152,56,.12)}

/* ---------- properties: texture control ---------- */
.tex-row{display:flex;gap:8px}
.tex-row .action-btn{flex:1}
.tex-preview{margin-top:8px;border:1px solid var(--line);border-radius:8px;overflow:hidden;
  aspect-ratio:2/1;background:var(--panel-2)}
.tex-preview img{width:100%;height:100%;object-fit:cover;display:block}
/* opacity / transparency slider */
.opacity-row{display:flex;align-items:center;gap:10px;width:100%}
.opacity-slider{flex:1;accent-color:var(--select);cursor:pointer}
.opacity-val{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--muted);
  min-width:34px;text-align:right}

/* ---------- animate button active state ---------- */
.chip-btn.active-chip{border-color:var(--select);color:var(--select);background:rgba(255,152,56,.12)}

/* ---------- timeline bar ---------- */
#timeline{display:none;flex-direction:column;background:var(--panel);
  border-top:1px solid var(--line);z-index:19}
#timeline.open{display:flex}
#timeline-head{display:flex;align-items:center;gap:12px;padding:8px 14px;
  border-bottom:1px solid var(--line)}
#tl-play{width:34px;height:34px;border-radius:8px;background:var(--panel-2);
  border:1px solid var(--line);font-size:13px;color:var(--text);flex:none}
#tl-play:hover:not(:disabled){border-color:var(--select);color:var(--select)}
#tl-play:disabled{opacity:.4}
#tl-fps{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}
#tl-fps label{letter-spacing:.1em;text-transform:uppercase}
#tl-fps input[type=range]{width:90px;accent-color:var(--select)}
#tl-fps-val{font-family:'IBM Plex Mono',monospace;min-width:16px;color:var(--text)}
.tl-spacer{flex:1}
#tl-status{font-size:11.5px;color:var(--muted);font-family:'IBM Plex Mono',monospace}
.tl-btn{padding:7px 12px;border-radius:8px;font-size:12.5px;border:1px solid var(--line);
  background:var(--panel-2);color:var(--text)}
.tl-btn:hover{border-color:var(--muted)}
#tl-capture{border-color:var(--select);color:var(--select)}
#tl-capture:hover{background:rgba(255,152,56,.12)}
#tl-frames{display:flex;gap:8px;padding:12px 14px;overflow-x:auto;min-height:64px;align-items:center}
#tl-frames:empty::before{content:'Pose your objects, then “Capture frame” to begin.';
  color:var(--muted);font-size:12px}
.tl-frame{position:relative;width:64px;height:44px;border-radius:8px;flex:none;
  background:var(--panel-2);border:1px solid var(--line);color:var(--muted);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  font-family:'IBM Plex Mono',monospace;transition:border-color .12s ease}
.tl-frame:hover{border-color:var(--muted)}
.tl-frame.active{border-color:var(--select);color:var(--select);box-shadow:0 0 0 1px var(--select) inset}
.tl-frame-del{position:absolute;top:-6px;right:-6px;width:18px;height:18px;border-radius:50%;
  background:var(--panel);border:1px solid var(--line);color:var(--muted);font-size:10px;
  display:none;align-items:center;justify-content:center;line-height:1}
.tl-frame:hover .tl-frame-del{display:flex}
.tl-frame-del:hover{color:#FF7A7A;border-color:#FF7A7A}
body.mobile #tl-frames{min-height:56px}
body.mobile #timeline-head{flex-wrap:wrap;gap:8px}

/* ---------- timeline: onion toggle active ---------- */
#tl-onion.on{border-color:var(--select);color:var(--select);background:rgba(255,152,56,.12)}

/* ---------- auth modal ---------- */
.auth-modal{position:fixed;inset:0;z-index:60;display:none;align-items:center;justify-content:center;
  background:rgba(8,9,11,.72);backdrop-filter:blur(4px)}
.auth-modal.open{display:flex}
.auth-card{width:340px;max-width:calc(100vw - 32px);background:var(--panel);border:1px solid var(--line);
  border-radius:16px;padding:26px 24px;position:relative;box-shadow:0 24px 64px rgba(0,0,0,.5)}
.auth-close{position:absolute;top:14px;right:14px;width:28px;height:28px;border-radius:8px;
  color:var(--muted);font-size:14px}
.auth-close:hover{background:var(--panel-2);color:var(--text)}
.auth-card h2{font-size:20px;margin:0 0 6px}
.auth-sub{font-size:12.5px;color:var(--muted);margin:0 0 18px;line-height:1.5}
.auth-card input{width:100%;margin-bottom:10px;padding:11px 12px;border-radius:9px;
  background:var(--panel-2);border:1px solid var(--line);color:var(--text);font-size:13px}
.auth-card input:focus{outline:none;border-color:var(--select)}
.auth-primary{width:100%;padding:11px;border-radius:9px;background:var(--select);color:#1a1206;
  font-size:13.5px;font-weight:600;margin-top:4px}
.auth-primary:hover{filter:brightness(1.06)}
.auth-primary:disabled{opacity:.6}
.auth-switch{display:flex;gap:6px;justify-content:center;margin-top:14px;font-size:12px;color:var(--muted)}
.auth-link{color:var(--select);font-size:12px}
.auth-link:hover{text-decoration:underline}
.auth-error{color:#FF7A7A;font-size:12px;margin-top:12px;text-align:center;min-height:16px;line-height:1.4}

/* lobby account + upgrade bits */
#account-btn[data-state="licensed"]{border-color:var(--select);color:var(--select)}
.upgrade-banner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  background:linear-gradient(90deg,rgba(255,152,56,.14),rgba(255,152,56,.05));
  border:1px solid rgba(255,152,56,.4);border-radius:12px;padding:12px 16px;margin-bottom:18px;font-size:12.5px}
.upgrade-banner strong{color:var(--text)}
.upgrade-btn{margin-left:auto;padding:8px 16px;border-radius:8px;background:var(--select);
  color:#1a1206;font-weight:600;font-size:12.5px}
.upgrade-btn:hover{filter:brightness(1.06)}