:root { --bg:#f3f4f6; --panel:#ffffff; --line:#d1d5db; --fg:#111827; --muted:#6b7280; --accent:#2563eb; --accent2:#16a34a; --danger:#dc2626; }
* { box-sizing: border-box; }
body { margin:0; font: 15px/1.5 system-ui, Arial, sans-serif; background:var(--bg); color:var(--fg); }
.hidden { display:none !important; }
.hidden-overlay { display:none !important; }
#login { position:fixed; inset:0; background:var(--bg); display:flex; align-items:center; justify-content:center; z-index:99; }
#login form { display:flex; flex-direction:column; gap:12px; width:320px; padding:28px; background:var(--panel); border:1px solid var(--line); border-radius:12px; box-shadow:0 4px 20px rgba(0,0,0,.08); }
#login input, select, button { font:inherit; }
button { background:#e5e7eb; color:var(--fg); border:1px solid var(--line); border-radius:8px; padding:8px 14px; cursor:pointer; font-weight:600; }
button:hover { border-color:var(--accent); background:#dbeafe; }
button.primary { background:var(--accent); color:#fff; }
input, select { background:#fff; color:var(--fg); border:1px solid var(--line); border-radius:8px; padding:6px 10px; }
#topbar { display:flex; gap:8px; align-items:center; padding:8px 12px; background:var(--panel); border-bottom:1px solid var(--line); flex-wrap:wrap; }
#topbar .spacer { flex:1; }
#topbar nav { display:flex; gap:4px; }
#topbar nav button { background:transparent; border:1px solid transparent; }
#topbar nav button.on { background:var(--accent); color:#fff; border-color:var(--accent); }
#topbar nav button:hover { background:#e5e7eb; }
#topbar #pending-badge, #topbar #trash-link { padding:6px 10px; border-radius:8px; background:#fef3c7; font-size:13px; cursor:pointer; }
#topbar #trash-link { background:#fee2e2; }
#save-state { color:var(--accent2); font-size:13px; font-weight:600; }
.menu-btn { display:none; }
main { display:flex; height: calc(100vh - 52px - 32px); position:relative; }
.panel { background:var(--panel); display:flex; flex-direction:column; overflow:hidden; transition:width .2s; }
#leftpanel { width:320px; border-right:1px solid var(--line); }
#rightpanel { width:340px; border-left:1px solid var(--line); }
.panel.collapsed { width:44px; }
.panel.collapsed .panel-body { display:none; }
.panel-head { display:flex; justify-content:space-between; align-items:center; padding:8px 10px; border-bottom:1px solid var(--line); font-weight:600; }
.panel-body { padding:10px; overflow-y:auto; flex:1; }
.panel-body h4 { margin:12px 0 6px; font-size:13px; color:var(--muted); text-transform:uppercase; letter-spacing:.5px; }
#center { flex:1; display:flex; flex-direction:column; min-width:0; min-height:0; overflow:hidden; position:relative; }
#viewport-wrap { flex:1 1 0; min-height:0; overflow:hidden; position:relative; background:#111; }
#viewport { flex:1; position:relative; overflow:hidden; }
#viewport canvas { display:block; width:100%; height:100%; }
#overlay-text { position:absolute; left:0; right:0; bottom:14%; text-align:center; color:#fff; font:600 42px/1.2 Arial, sans-serif; text-shadow:0 2px 10px rgba(0,0,0,.8); pointer-events:none; }
#timeline-wrap { background:var(--panel); border-top:1px solid var(--line); }
#timeline { position:relative; height:60px; overflow-x:auto; overflow-y:hidden; background:#f9fafb; }
#timeline .beat-block { position:absolute; top:4px; height:52px; background:#dbeafe; border:1px solid #2563eb; border-radius:6px; padding:2px 6px; font-size:11px; cursor:grab; overflow:hidden; white-space:nowrap; }
#timeline .beat-block.sel { background:#2563eb; color:#fff; }
#playhead { position:absolute; top:0; bottom:0; width:2px; background:#dc2626; pointer-events:none; z-index:5; }
#transport { display:flex; gap:10px; align-items:center; padding:8px 12px; background:var(--panel); border-top:1px solid var(--line); }
#scrub { flex:1; }
.screen { display:none; position:absolute; inset:0; padding:14px; overflow-y:auto; background:var(--bg); z-index:2; }
.screen.on { display:block; }
.screen h3 { margin:4px 0 10px; }
#edittabs { display:none; }
#beat-list { list-style:none; margin:0 0 10px; padding:0; }
#beat-list li { padding:8px 10px; border:1px solid var(--line); border-radius:8px; margin-bottom:4px; cursor:pointer; display:flex; justify-content:space-between; align-items:center; }
#beat-list li.sel { border-color:var(--accent); background:#dbeafe; }
.field { display:flex; gap:8px; align-items:center; margin-bottom:8px; flex-wrap:wrap; }
.field label { color:var(--muted); font-size:13px; min-width:120px; }
.field input, .field select { flex:1; min-width:80px; }
.obj-card, .char-card, .flat-card, .sfx-card, .lib-card, .video-card { border:1px solid var(--line); border-radius:10px; padding:10px; margin-bottom:10px; background:#fff; }
.video-card { display:flex; gap:10px; align-items:center; }
.video-card img { width:80px; height:50px; object-fit:cover; border-radius:6px; background:#e5e7eb; }
.lib-card img { max-width:100%; height:90px; object-fit:cover; margin:6px 0; border-radius:6px; background:#e5e7eb; }
#render-progress { height:16px; background:#e5e7eb; border:1px solid var(--line); border-radius:8px; overflow:hidden; margin:8px 0; }
#render-bar { height:100%; width:0%; background:var(--accent); transition:width .3s; }
#render-status { font-size:13px; color:var(--muted); }
a { color:var(--accent); }
#statusbar { display:flex; gap:16px; padding:6px 16px; background:var(--panel); border-top:1px solid var(--line); font-size:12px; color:var(--muted); flex-wrap:wrap; }
#statusbar span { white-space:nowrap; }
/* phone */
@media (max-width: 768px) {
  .menu-btn { display:inline-block; }
  #topbar nav { display:none; }
  #topbar nav.open { display:flex; flex-direction:column; position:absolute; top:52px; left:0; right:0; background:var(--panel); border-bottom:1px solid var(--line); padding:8px; z-index:5; }
  main { flex-direction:column; }
  .panel { position:fixed; top:52px; bottom:32px; z-index:20; transition:transform .2s; }
  #leftpanel { left:0; transform:translateX(-100%); width:85vw; }
  #rightpanel { right:0; transform:translateX(100%); width:85vw; }
  .panel.open { transform:translateX(0); }
  .panel.collapsed { transform:translateX(-100%); }
  #rightpanel.collapsed { transform:translateX(100%); }
  #center { width:100%; }
}/* ===== multi-lane timeline (tl2) ===== */
.tl2 { border-top:1px solid var(--line); background:var(--panel); display:flex; flex-direction:column; height:300px; flex:0 0 300px; }
.tl2-bar { display:flex; gap:6px; align-items:center; padding:4px 8px; border-bottom:1px solid var(--line); flex-wrap:wrap; }
.tl2-btn { padding:3px 8px; font-size:12px; }
.tl2-zoom { width:90px; }
.tl2-jump { width:70px; font-size:12px; padding:3px 6px; }
.tl2-time { font-size:12px; font-weight:700; color:#111; }
.tl2-warn { font-size:12px; color:#dc2626; font-weight:700; }
.tl2-body { position:relative; overflow-x:auto; overflow-y:auto; flex:1; min-height:0; }
.tl2-ruler { position:sticky; top:0; z-index:4; height:44px; background:#f9fafb; border-bottom:1px solid var(--line); }
.tl2-ruler-inner { position:relative; height:100%; }
.tl2-scene { position:absolute; top:0; height:16px; background:#dbeafe; border:1px solid #93c5fd; font-size:10px; padding:0 4px; overflow:hidden; box-sizing:border-box; }
.tl2-beatblk { position:absolute; top:17px; height:20px; background:#e5e7eb; border:1px solid #9ca3af; border-radius:3px; font-size:10px; line-height:18px; padding:0 4px; overflow:hidden; cursor:grab; box-sizing:border-box; white-space:nowrap; }
.tl2-tick { position:absolute; top:0; bottom:0; width:1px; background:#d1d5db; }
.tl2-time-label { position:absolute; top:38px; font-size:9px; color:#6b7280; transform:translateX(2px); }
.tl2-marker { position:absolute; top:0; font-size:12px; cursor:grab; color:#b45309; z-index:5; }
.tl2-lane { display:flex; border-bottom:1px solid var(--line); }
.tl2-lane-head { width:92px; min-width:92px; display:flex; gap:2px; align-items:center; padding:2px 4px; font-size:11px; font-weight:600; background:#f3f4f6; border-right:1px solid var(--line); box-sizing:border-box; }
.tl2-lane-head button { padding:0 3px; font-size:9px; line-height:14px; }
.tl2-lane-head button.on { background:#2563eb; color:#fff; border-color:#2563eb; }
.tl2-lane-tracks { flex:1; overflow:hidden; position:relative; height:56px; }
.tl2-lane-inner { position:relative; height:100%; }
.tl2-lane[data-mute="1"] .tl2-lane-tracks { opacity:.4; }
.tl2-lane[data-lock="1"] .tl2-clip { cursor:not-allowed; }
.tl2-clip { position:absolute; top:5px; height:46px; border-radius:5px; color:#fff; font-size:11px; padding:2px 4px; overflow:hidden; cursor:grab; box-sizing:border-box; border:1px solid rgba(0,0,0,.25); }
.tl2-clip.sel { outline:2px solid #111; z-index:2; }
.tl2-clip-label { display:block; white-space:nowrap; text-shadow:0 1px 2px rgba(0,0,0,.4); }
.tl2-wave { position:absolute; left:2px; right:2px; bottom:1px; width:calc(100% - 4px); height:22px; pointer-events:none; }
.tl2-edge { position:absolute; top:0; bottom:0; width:6px; cursor:ew-resize; }
.tl2-edge.l { left:0; } .tl2-edge.r { right:0; }
.tl2-playhead { position:absolute; top:0; bottom:0; left:92px; width:2px; background:#dc2626; z-index:6; pointer-events:none; }