/* ============================================================================
   3dsmax2026 · web/css/app.css —— 3ds Max 2026 风格深色工作台
   纯手写 CSS：无框架、无外链字体、无 CDN。图标由 ui/icons.js 内联 SVG。
   ========================================================================== */
:root {
  --bg0: #17191d;
  --bg1: #212429;
  --bg2: #2a2d33;
  --bg3: #34383f;
  --bg4: #3e434b;
  --bg5: #494e57;
  --line: #121417;
  --line2: #4b5059;
  --line3: #5b616b;
  --text: #d8dce2;
  --text-dim: #a2a9b3;
  --text-mute: #737b86;
  --accent: #e69138;
  --accent-bright: #ffae4d;
  --accent-soft: rgba(230, 145, 56, .17);
  --blue: #4b93db;
  --blue-soft: rgba(75, 147, 219, .18);
  --ok: #62c184;
  --warn: #e0b44a;
  --bad: #e06a6a;
  --radius: 4px;
  --shadow: 0 8px 28px rgba(0, 0, 0, .45);
  --font: "Segoe UI", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg1);
  color: var(--text);
  font: 12px/1.45 var(--font);
  overflow: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
input, select, textarea { user-select: text; }
::selection { background: var(--accent-soft); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg1); }
::-webkit-scrollbar-thumb { background: var(--bg5); border: 2px solid var(--bg1); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #5e6570; }
:focus-visible { outline: 1px solid var(--accent); outline-offset: -1px; }
.icon { display: block; flex: none; }
.hidden { display: none !important; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: pre; border: 0; }
.mono { font-family: var(--mono); }
.dim { color: var(--text-dim); }
.muted { color: var(--text-mute); }
.spacer { flex: 1; }

#app { height: 100vh; display: flex; flex-direction: column; min-width: 980px; }

/* ------------------------------------------------------------------ 标题栏 */
.titlebar {
  height: 32px; flex: none; display: flex; align-items: center; gap: 12px;
  padding: 0 10px; background: linear-gradient(#2d3137, #22252a);
  border-bottom: 1px solid var(--line); box-shadow: 0 1px 0 rgba(255, 255, 255, .03) inset;
}
.brand { display: flex; align-items: center; gap: 8px; min-width: 0; }
.brand .product { font-weight: 700; font-size: 13px; letter-spacing: .2px; }
.brand .product em { color: var(--accent); font-style: normal; }
.brand .tag { font-size: 10px; color: var(--text-mute); border: 1px solid var(--line2); border-radius: 3px; padding: 1px 5px; }
.title-doc { color: var(--text-dim); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 40vw; }
.title-doc b { color: var(--text); font-weight: 600; }
.title-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.workspace { color: var(--text-dim); font-size: 11px; border: 1px solid var(--line2); border-radius: 3px; padding: 2px 8px; background: var(--bg2); }
.unofficial { color: var(--warn); font-size: 10px; }
.edition-chip { font-size: 10px; text-transform: uppercase; letter-spacing: .6px; color: var(--bg0); background: var(--accent); border-radius: 3px; padding: 1px 6px; font-weight: 700; }
.edition-chip.dev { background: var(--blue); color: #fff; }
.title-btn { width: 24px; height: 22px; border: 1px solid var(--line2); background: var(--bg2); color: var(--text-dim); border-radius: 3px; line-height: 1; }
.title-btn:hover { background: var(--bg4); color: var(--text); }

/* ------------------------------------------------------------------ 菜单栏 */
.menubar { height: 26px; flex: none; display: flex; align-items: stretch; background: #26292e; border-bottom: 1px solid var(--line); padding: 0 4px; position: relative; z-index: 40; }
.menu { position: relative; display: flex; align-items: stretch; }
.menu > button {
  border: 0; background: transparent; color: var(--text); padding: 0 10px; font-size: 12px;
  border-radius: 3px; margin: 2px 1px; white-space: nowrap;
}
.menu > button:hover, .menu.open > button { background: var(--bg4); }
.menu-popup {
  position: absolute; top: 25px; left: 0; min-width: 230px; background: #2c3036;
  border: 1px solid var(--line); border-radius: 5px; box-shadow: var(--shadow);
  padding: 4px; z-index: 1000; display: none; max-height: calc(100vh - 64px); overflow-y: auto;
}
.menu.open .menu-popup { display: block; }
.menu-item {
  display: flex; align-items: center; gap: 9px; width: 100%; border: 0; background: transparent;
  color: var(--text); text-align: left; padding: 6px 9px; border-radius: 3px; font-size: 12px; white-space: nowrap;
}
.menu-item:hover { background: var(--accent); color: #1b1d21; }
.menu-item:disabled { color: var(--text-mute); background: transparent; cursor: default; }
.menu-item .mi-icon { width: 18px; height: 18px; display: flex; align-items: center; justify-content: center; }
.menu-item .mi-key { margin-left: auto; color: var(--text-mute); font-size: 10.5px; padding-left: 18px; }
.menu-item:hover .mi-key { color: #3a2a13; }
.menu-sep { height: 1px; background: var(--line2); margin: 4px 7px; opacity: .5; }
.menu-item .check { width: 14px; color: var(--accent); }
.menu-item:hover .check { color: #1b1d21; }

/* ------------------------------------------------------------------ 工具栏 */
.toolbar {
  height: 44px; flex: none; display: flex; align-items: center; gap: 2px; padding: 3px 7px;
  background: linear-gradient(#32363c, #292c31); border-bottom: 1px solid var(--line); overflow: hidden;
}
.tb-group { display: flex; align-items: center; gap: 1px; padding: 0 3px; }
.tb-sep { width: 1px; height: 26px; background: var(--line); box-shadow: 1px 0 0 rgba(255, 255, 255, .05); margin: 0 4px; }
.tb-btn {
  height: 32px; min-width: 32px; padding: 0 6px; border: 1px solid transparent; border-radius: 4px;
  background: transparent; color: var(--text-dim); display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  position: relative;
}
.tb-btn:hover { background: var(--bg4); color: var(--text); border-color: var(--line2); }
.tb-btn:active { background: var(--bg5); }
.tb-btn.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-bright); box-shadow: 0 0 0 1px rgba(230,145,56,.25) inset; }
.tb-btn[disabled] { opacity: .4; cursor: default; }
.tb-btn .caret { width: 7px; height: 7px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg) translateY(-2px); margin-left: 1px; }
.tb-btn.wide { padding: 0 9px; font-size: 11px; }
.tb-label { font-size: 10.5px; color: var(--text-dim); }
.toolbar .tb-spacer { flex: 1; }
.tb-toggle { font-size: 10px; font-weight: 700; letter-spacing: .4px; border: 1px solid var(--line2); border-radius: 3px; min-width: 26px; height: 24px; color: var(--text-dim); background: var(--bg2); }
.tb-toggle.on { color: #20160a; background: var(--accent); border-color: var(--accent); }
.tb-toggle:hover { border-color: var(--accent); }

/* ------------------------------------------------------------------ 功能区 */
.ribbon { height: 66px; flex: none; display: flex; flex-direction: column; background: #2b2f35; border-bottom: 1px solid var(--line); }
.ribbon.collapsed { height: 26px; }
.ribbon-tabs { height: 25px; display: flex; align-items: flex-end; gap: 2px; padding: 0 8px; background: #24272c; border-bottom: 1px solid var(--line); }
.ribbon-tab { border: 1px solid transparent; border-bottom: 0; background: transparent; color: var(--text-dim); padding: 3px 12px 4px; border-radius: 4px 4px 0 0; font-size: 11.5px; }
.ribbon-tab:hover { color: var(--text); background: var(--bg3); }
.ribbon-tab.active { color: var(--text); background: #2b2f35; border-color: var(--line2); }
.ribbon-body { flex: 1; display: flex; align-items: stretch; gap: 2px; padding: 3px 8px 4px; overflow: hidden; }
.ribbon.collapsed .ribbon-body { display: none; }
.ribbon-group { display: flex; align-items: center; gap: 2px; padding: 0 7px; border-right: 1px solid var(--line2); }
.ribbon-group:last-child { border-right: 0; }
.ribbon-btn { height: 40px; min-width: 38px; border: 1px solid transparent; border-radius: 4px; background: transparent; color: var(--text-dim); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; padding: 2px 6px; }
.ribbon-btn:hover { background: var(--bg4); color: var(--text); border-color: var(--line2); }
.ribbon-btn span { font-size: 9.5px; line-height: 1; white-space: nowrap; }
.ribbon-btn.active { color: var(--accent-bright); border-color: var(--accent); background: var(--accent-soft); }
.ribbon-group-label { color: var(--text-mute); font-size: 9px; align-self: flex-end; padding: 0 3px 2px; }

/* ------------------------------------------------------------------ 主工作区 */
.workspace { flex: 1; display: flex; min-height: 0; background: var(--bg0); }
.explorer { width: 238px; flex: none; display: flex; flex-direction: column; background: var(--bg1); border-right: 1px solid var(--line); min-height: 0; }
.explorer.collapsed { width: 34px; }
.explorer.collapsed .explorer-body, .explorer.collapsed .explorer-search, .explorer.collapsed .explorer-foot, .explorer.collapsed .explorer-title span { display: none; }
.explorer-head { height: 30px; display: flex; align-items: center; gap: 7px; padding: 0 8px; background: var(--bg2); border-bottom: 1px solid var(--line); flex: none; }
.explorer-title { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; color: var(--text-dim); white-space: nowrap; overflow: hidden; }
.explorer-title .icon { color: var(--accent); }
.explorer-actions { margin-left: auto; display: flex; gap: 2px; }
.mini-btn { width: 22px; height: 22px; border: 1px solid transparent; border-radius: 3px; background: transparent; color: var(--text-mute); display: inline-flex; align-items: center; justify-content: center; padding: 0; }
.mini-btn:hover { background: var(--bg4); color: var(--text); border-color: var(--line2); }
.mini-btn.on { color: var(--accent); }
.explorer-search { padding: 6px 8px; border-bottom: 1px solid var(--line); flex: none; }
.explorer-search .search-wrap { display: flex; align-items: center; gap: 5px; background: var(--bg0); border: 1px solid var(--line2); border-radius: 3px; padding: 3px 6px; }
.explorer-search input { flex: 1; min-width: 0; border: 0; background: transparent; outline: 0; font-size: 11px; color: var(--text); }
.explorer-search input::placeholder { color: var(--text-mute); }
.explorer-body { flex: 1; overflow: auto; padding: 4px 0 10px; min-height: 0; }
.explorer-foot { height: 27px; flex: none; display: flex; align-items: center; gap: 4px; padding: 0 6px; border-top: 1px solid var(--line); color: var(--text-mute); font-size: 10.5px; }
.explorer-foot .spacer { flex: 1; }

.tree-layer { display: flex; align-items: center; gap: 5px; padding: 4px 8px; color: var(--text-dim); font-size: 11px; border-bottom: 1px solid rgba(255,255,255,.03); }
.tree-layer:hover { background: var(--bg2); }
.tree-layer .swatch { width: 9px; height: 9px; border-radius: 2px; border: 1px solid rgba(0,0,0,.5); }
.tree-layer .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-layer .count { color: var(--text-mute); font-size: 10px; }
.tree-row { display: flex; align-items: center; gap: 5px; height: 23px; padding-right: 6px; color: var(--text-dim); font-size: 11px; border-left: 2px solid transparent; }
.tree-row:hover { background: var(--bg2); color: var(--text); }
.tree-row.selected { background: var(--accent-soft); border-left-color: var(--accent); color: var(--text); }
.tree-row.frozen { opacity: .55; }
.tree-row.hidden-obj .name { color: var(--text-mute); text-decoration: line-through; }
.tree-row .twist { width: 12px; height: 12px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-mute); }
.tree-row .obj-icon { width: 16px; height: 16px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-mute); }
.tree-row.selected .obj-icon { color: var(--accent); }
.tree-row .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-row .type { color: var(--text-mute); font-size: 9.5px; }
.tree-row .row-btn { width: 17px; height: 17px; border: 0; background: transparent; color: var(--text-mute); padding: 0; display: inline-flex; align-items: center; justify-content: center; border-radius: 2px; }
.tree-row .row-btn:hover { color: var(--accent); background: var(--bg4); }
.tree-row .row-btn.off { opacity: .35; }
.tree-row .rename-input { flex: 1; height: 19px; background: var(--bg0); border: 1px solid var(--accent); border-radius: 2px; padding: 0 4px; font-size: 11px; outline: 0; }
.tree-empty { color: var(--text-mute); font-size: 11px; padding: 18px 12px; text-align: center; line-height: 1.8; }

/* ------------------------------------------------------------------ 视口 */
.viewport-shell { flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--bg0); position: relative; }
.viewport-tabs { height: 27px; flex: none; display: flex; align-items: flex-end; gap: 1px; padding: 0 6px; background: #24272b; border-bottom: 1px solid var(--line); }
.vp-tab { border: 1px solid transparent; border-bottom: 0; background: transparent; color: var(--text-mute); font-size: 10.5px; padding: 3px 10px 4px; border-radius: 3px 3px 0 0; }
.vp-tab:hover { color: var(--text); background: var(--bg3); }
.vp-tab.active { color: var(--text); background: #34383f; border-color: var(--line2); }
.vp-tab .vp-dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--ok); margin-right: 5px; vertical-align: 1px; }
.viewport { flex: 1; position: relative; overflow: hidden; background: radial-gradient(ellipse at 50% 38%, #4a505a 0%, #343940 48%, #22252a 100%); min-height: 0; }
.viewport > canvas#viewport-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; outline: 0; }
.viewport.cursor-crosshair { cursor: crosshair; }
.viewport.cursor-move { cursor: move; }
.viewport.cursor-grabbing { cursor: grabbing; }
.viewport.cursor-zoom { cursor: zoom-in; }
.axis-gizmo { position: absolute; left: 10px; bottom: 48px; z-index: 3; width: 76px !important; height: 76px !important; inset: auto auto 48px 10px; pointer-events: none; opacity: .9; }
.webgl-fallback { position: absolute; inset: 0; z-index: 8; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 8px; padding: 30px; color: var(--text-dim); font-size: 12px; line-height: 1.8; background: radial-gradient(ellipse at 50% 40%, #2c3138, #15171a 75%); }
.webgl-fallback b { color: var(--bad); font-size: 18px; }
.webgl-fallback .mono { color: var(--text-mute); font-size: 10px; max-width: 620px; overflow-wrap: anywhere; }
.viewport.cursor-grabbing { cursor: grabbing; }
.viewport.cursor-zoom { cursor: zoom-in; }
.viewport-label { position: absolute; top: 8px; left: 10px; z-index: 3; display: flex; align-items: center; gap: 8px; pointer-events: none; }
.viewport-label .vp-name { font-size: 11px; color: #e7ebf0; text-shadow: 0 1px 2px rgba(0,0,0,.7); background: rgba(20,22,26,.5); padding: 2px 7px; border-radius: 3px; border: 1px solid rgba(255,255,255,.08); }
.viewport-label .vp-mode { font-size: 10px; color: #cfd5dc; text-shadow: 0 1px 2px rgba(0,0,0,.7); }
.viewport-hud { position: absolute; left: 10px; bottom: 9px; z-index: 3; display: flex; flex-direction: column; gap: 2px; pointer-events: none; color: #d4d9df; font-size: 10.5px; text-shadow: 0 1px 2px rgba(0,0,0,.8); }
.viewport-hud .hud-line { display: flex; gap: 10px; background: rgba(20,22,26,.35); padding: 2px 7px; border-radius: 3px; width: max-content; }
.viewport-hud b { color: #fff; font-weight: 600; }
.viewport-hud .hi { color: var(--accent-bright); }

.nav-bar { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); z-index: 4; display: flex; flex-direction: column; gap: 3px; background: rgba(28,31,36,.82); border: 1px solid rgba(255,255,255,.1); border-radius: 5px; padding: 4px; box-shadow: 0 2px 10px rgba(0,0,0,.35); }
.nav-btn { width: 28px; height: 26px; border: 1px solid transparent; border-radius: 3px; background: transparent; color: #b9c0c9; display: inline-flex; align-items: center; justify-content: center; padding: 0; }
.nav-btn:hover { background: rgba(255,255,255,.1); color: #fff; }
.nav-btn.active { background: var(--accent); color: #1b1d21; }

.viewcube { position: absolute; top: 10px; right: 12px; z-index: 4; width: 92px; height: 92px; perspective: 420px; cursor: pointer; }
.viewcube .cube { position: absolute; left: 50%; top: 50%; width: 58px; height: 58px; margin: -29px 0 0 -29px; transform-style: preserve-3d; transition: transform .12s linear; }
.viewcube .face { position: absolute; width: 58px; height: 58px; border: 1px solid rgba(255,255,255,.28); background: rgba(66,72,82,.82); color: #e3e7ec; font-size: 10px; display: flex; align-items: center; justify-content: center; text-shadow: 0 1px 1px #000; backface-visibility: hidden; }
.viewcube .face:hover { background: rgba(230,145,56,.75); color: #1b1d21; }
.viewcube .f-front { transform: translateZ(29px); }
.viewcube .f-back { transform: rotateY(180deg) translateZ(29px); }
.viewcube .f-right { transform: rotateY(90deg) translateZ(29px); }
.viewcube .f-left { transform: rotateY(-90deg) translateZ(29px); }
.viewcube .f-top { transform: rotateX(90deg) translateZ(29px); }
.viewcube .f-bottom { transform: rotateX(-90deg) translateZ(29px); }
.viewcube .cube-label { position: absolute; bottom: -2px; left: 0; right: 0; text-align: center; color: #cfd5dd; font-size: 9px; text-shadow: 0 1px 2px #000; }

.marquee { position: absolute; border: 1px dashed var(--accent-bright); background: rgba(230,145,56,.10); z-index: 6; pointer-events: none; }
.quadmenu { position: absolute; z-index: 30; width: 230px; background: #2a2e34; border: 1px solid #0d0f11; border-radius: 5px; box-shadow: 0 6px 26px rgba(0,0,0,.6); padding: 4px; }
.quad-title { color: var(--text-mute); font-size: 10px; padding: 3px 7px 4px; border-bottom: 1px solid var(--line2); margin-bottom: 3px; }
.quad-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.quad-item { border: 1px solid transparent; background: transparent; color: var(--text); display: flex; align-items: center; gap: 6px; padding: 5px 6px; border-radius: 3px; font-size: 11px; text-align: left; }
.quad-item:hover { background: var(--accent); color: #1b1d21; }
.quad-item.danger:hover { background: #b04a4a; color: #fff; }

.tooltip { position: absolute; z-index: 50; pointer-events: none; background: #111317; border: 1px solid var(--line2); color: var(--text); padding: 3px 7px; border-radius: 3px; font-size: 10.5px; box-shadow: 0 3px 12px rgba(0,0,0,.5); max-width: 280px; }

/* ------------------------------------------------------------------ 命令面板 */
.command { width: 330px; flex: none; display: flex; background: var(--bg1); border-left: 1px solid var(--line); min-height: 0; }
.command.collapsed { width: 34px; }
.command.collapsed .cmd-body { display: none; }
.command.collapsed .cmd-tab span { display: none; }
.cmd-tabs { width: 35px; flex: none; display: flex; flex-direction: column; gap: 1px; padding: 3px 0; background: #1e2125; border-right: 1px solid var(--line); }
.cmd-tab { width: 33px; height: 52px; border: 0; border-left: 2px solid transparent; background: transparent; color: var(--text-mute); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: 9px; }
.cmd-tab:hover { color: var(--text); background: var(--bg3); }
.cmd-tab.active { color: var(--accent-bright); background: var(--bg2); border-left-color: var(--accent); }
.cmd-body { flex: 1; min-width: 0; overflow-y: auto; overflow-x: hidden; padding-bottom: 18px; }
.cmd-title { padding: 9px 10px 7px; color: var(--text); font-size: 12px; font-weight: 600; background: var(--bg2); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; display: flex; align-items: center; gap: 6px; }
.cmd-title .icon { color: var(--accent); }
.cmd-section { padding: 7px 9px; border-bottom: 1px solid var(--line); }
.cmd-section h4 { margin: 0 0 6px; font-size: 10.5px; color: var(--text-dim); font-weight: 600; letter-spacing: .3px; text-transform: uppercase; }
.type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; }
.type-btn { display: flex; align-items: center; gap: 6px; min-height: 33px; padding: 3px 7px; border: 1px solid var(--line2); border-radius: 3px; background: var(--bg2); color: var(--text-dim); font-size: 10.5px; text-align: left; }
.type-btn:hover { color: var(--text); border-color: var(--accent); background: var(--bg3); }
.type-btn.active { color: #1e160c; background: var(--accent); border-color: var(--accent); font-weight: 600; }
.type-btn .icon { color: currentColor; }
.type-btn .ticon { width: 18px; display: flex; justify-content: center; }
.type-btn .tlabel { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.type-btn.wide { grid-column: 1 / -1; }
.create-hint { color: var(--text-mute); font-size: 10.5px; line-height: 1.6; padding: 5px 8px; background: var(--bg0); border: 1px dashed var(--line2); border-radius: 3px; }
.create-hint b { color: var(--text-dim); }

.rollout { border-bottom: 1px solid var(--line); }
.rollout-head { width: 100%; border: 0; border-bottom: 1px solid var(--line); background: linear-gradient(#3b3f47, #33373e); color: var(--text-dim); display: flex; align-items: center; gap: 7px; padding: 5px 9px; font-size: 11px; font-weight: 600; text-align: left; }
.rollout-head:hover { color: var(--text); background: linear-gradient(#444a53, #393e46); }
.rollout-head .twist { width: 10px; height: 10px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg); transition: transform .12s; }
.rollout.closed .rollout-head .twist { transform: rotate(-45deg); }
.rollout.closed .rollout-body { display: none; }
.rollout-body { padding: 7px 9px 8px; }
.param-row { display: flex; align-items: center; gap: 6px; min-height: 25px; margin-bottom: 3px; }
.param-row > label { flex: none; width: 78px; color: var(--text-dim); font-size: 10.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.param-row .param-control { flex: 1; display: flex; align-items: center; gap: 4px; min-width: 0; }
.param-row .param-control select { width: 100%; }
.param-row .unit { color: var(--text-mute); font-size: 9.5px; flex: none; }
.param-row .hint { color: var(--text-mute); font-size: 9.5px; }
.param-row.full { flex-direction: column; align-items: stretch; gap: 3px; }
.param-row.full > label { width: auto; }
input[type="text"], input[type="number"], select, textarea {
  background: var(--bg0); border: 1px solid var(--line2); border-radius: 3px; color: var(--text);
  padding: 3px 6px; font-size: 11px; outline: 0; min-width: 0;
}
input[type="text"]:focus, input[type="number"]:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(230,145,56,.2); }
input[type="number"] { width: 100%; font-family: var(--mono); }
input[type="color"] { width: 36px; height: 22px; padding: 1px; border: 1px solid var(--line2); border-radius: 3px; background: var(--bg0); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
input[type="checkbox"] { accent-color: var(--accent); }
.spinner { display: flex; align-items: stretch; width: 100%; }
.spinner input { border-radius: 3px 0 0 3px; border-right: 0; }
.spinner .spin-arrows { display: flex; flex-direction: column; width: 18px; border: 1px solid var(--line2); border-left: 0; border-radius: 0 3px 3px 0; overflow: hidden; }
.spinner .spin-arrows button { flex: 1; border: 0; border-bottom: 1px solid var(--line2); background: var(--bg3); color: var(--text-dim); font-size: 8px; line-height: 1; padding: 0; display: flex; align-items: center; justify-content: center; }
.spinner .spin-arrows button:last-child { border-bottom: 0; }
.spinner .spin-arrows button:hover { background: var(--bg5); color: var(--accent-bright); }
.param-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3px 6px; }
.param-grid .param-row { display: flex; flex-direction: column; align-items: stretch; gap: 2px; }
.param-grid .param-row > label { width: auto; font-size: 9.5px; }
.param-grid .param-row .param-control { width: 100%; }
.check-row { display: flex; align-items: center; gap: 6px; color: var(--text-dim); font-size: 10.5px; margin: 2px 0; }
.check-row input { accent-color: var(--accent); }

.obj-name-row { display: flex; gap: 5px; align-items: center; }
.obj-name-row input { flex: 1; font-size: 12px; font-weight: 600; }
.color-chip { width: 24px; height: 22px; border: 1px solid var(--line2); border-radius: 3px; flex: none; padding: 0; }
.stack-list { display: flex; flex-direction: column; gap: 2px; margin-bottom: 6px; }
.stack-row { display: flex; align-items: center; gap: 5px; border: 1px solid var(--line2); border-radius: 3px; background: var(--bg2); padding: 3px 5px; font-size: 10.5px; cursor: pointer; }
.stack-row:hover { border-color: var(--line3); }
.stack-row.active { border-color: var(--accent); background: var(--accent-soft); color: var(--text); }
.stack-row.disabled { opacity: .5; }
.stack-row .stack-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.stack-row .stack-kind { color: var(--text-mute); font-size: 9px; }
.stack-row .mini-btn { width: 18px; height: 18px; }
.stack-empty { color: var(--text-mute); font-size: 10px; padding: 5px 2px; }
.stack-base { border-color: var(--blue); }
.stack-base .stack-name { color: #9dc4ee; }
.add-mod { display: flex; gap: 4px; margin-bottom: 6px; }
.add-mod select { flex: 1; }
.btn { border: 1px solid var(--line2); border-radius: 3px; background: linear-gradient(#3c414a, #33373e); color: var(--text); padding: 4px 10px; font-size: 11px; display: inline-flex; align-items: center; justify-content: center; gap: 5px; }
.btn:hover { border-color: var(--accent); color: var(--accent-bright); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #1d160c; font-weight: 600; }
.btn.primary:hover { background: var(--accent-bright); color: #17120b; }
.btn.danger { color: #eda0a0; border-color: #6d3a3a; }
.btn.danger:hover { background: #6d3131; color: #fff; border-color: #a04a4a; }
.btn.block { width: 100%; }
.btn.small { padding: 2px 7px; font-size: 10px; }
.btn:disabled { opacity: .4; cursor: default; }
.button-row { display: flex; gap: 4px; margin: 4px 0; }
.button-row .btn { flex: 1; }
.keyval { color: var(--text-mute); font-size: 10px; }
.stat-table { width: 100%; border-collapse: collapse; font-size: 10.5px; }
.stat-table td { padding: 2px 3px; border-bottom: 1px solid rgba(255,255,255,.04); color: var(--text-dim); }
.stat-table td:last-child { text-align: right; color: var(--text); font-family: var(--mono); }
.empty-panel { padding: 24px 16px; color: var(--text-mute); font-size: 11px; line-height: 1.8; text-align: center; }

/* ------------------------------------------------------------------ 时间轴 */
.timeline { height: 86px; flex: none; background: var(--bg2); border-top: 1px solid var(--line); display: flex; flex-direction: column; user-select: none; }
.timeline.collapsed { height: 30px; }
.timeline.collapsed .track-area { display: none; }
.tl-top { height: 28px; display: flex; align-items: center; gap: 4px; padding: 2px 8px; border-bottom: 1px solid var(--line); background: #2c3036; }
.tl-btn { width: 25px; height: 21px; border: 1px solid transparent; border-radius: 3px; background: transparent; color: var(--text-dim); display: inline-flex; align-items: center; justify-content: center; padding: 0; }
.tl-btn:hover { background: var(--bg4); color: var(--text); }
.tl-btn.active { color: var(--accent-bright); background: var(--accent-soft); border-color: var(--accent); }
.tl-btn:disabled { opacity: .35; }
.tl-sep { width: 1px; height: 16px; background: var(--line2); margin: 0 4px; }
.tl-label { color: var(--text-mute); font-size: 10px; }
.tl-frame { display: flex; align-items: center; gap: 3px; margin-left: 4px; }
.tl-frame input { width: 58px; text-align: center; font-family: var(--mono); }
.tl-top .spacer { flex: 1; }
.tl-time-config { color: var(--text-dim); font-size: 10.5px; }
.track-area { flex: 1; position: relative; padding: 0 12px 0 10px; min-height: 0; }
.track-ruler { position: absolute; left: 10px; right: 12px; top: 6px; height: 18px; cursor: pointer; }
.track-ruler .tick { position: absolute; top: 0; width: 1px; background: #6c737e; height: 5px; }
.track-ruler .tick.major { height: 9px; background: #8a929e; }
.track-ruler .tick-label { position: absolute; top: 10px; font-size: 8.5px; color: var(--text-mute); transform: translateX(-50%); font-family: var(--mono); }
.track-bar { position: absolute; left: 10px; right: 12px; top: 28px; height: 16px; background: #1c1f23; border: 1px solid var(--line); border-radius: 3px; cursor: pointer; }
.track-fill { position: absolute; left: 0; top: 0; bottom: 0; background: linear-gradient(rgba(230,145,56,.23), rgba(230,145,56,.11)); border-right: 1px solid var(--accent); }
.track-key { position: absolute; top: 50%; width: 9px; height: 9px; margin: -5px 0 0 -4px; background: #e8b45e; border: 1px solid #6c4b17; transform: rotate(45deg); box-shadow: 0 0 0 1px rgba(0,0,0,.4); cursor: pointer; }
.track-key.selected { background: #fff; border-color: var(--accent); }
.track-key:hover { background: #fff0c9; }
.track-playhead { position: absolute; top: 3px; bottom: 2px; width: 1px; background: var(--accent-bright); pointer-events: none; box-shadow: 0 0 4px rgba(255,174,77,.8); }
.track-playhead::before { content: ""; position: absolute; top: -3px; left: -4px; width: 9px; height: 7px; background: var(--accent-bright); clip-path: polygon(0 0, 100% 0, 50% 100%); }
.track-labels { position: absolute; left: 10px; bottom: 4px; right: 12px; display: flex; justify-content: space-between; color: var(--text-mute); font-size: 9px; }
.track-labels b { color: var(--text-dim); font-weight: 500; }

/* ------------------------------------------------------------------ 状态栏 */
.statusbar { height: 27px; flex: none; display: flex; align-items: center; gap: 10px; padding: 0 9px; background: #202328; border-top: 1px solid var(--line); color: var(--text-dim); font-size: 10.5px; }
.statusbar .prompt { color: var(--text); min-width: 140px; }
.statusbar .coords { font-family: var(--mono); color: var(--text-dim); font-size: 10px; }
.statusbar .spacer { flex: 1; }
.statusbar .sb-group { display: flex; align-items: center; gap: 3px; }
.statusbar .sb-btn { border: 1px solid transparent; background: transparent; color: var(--text-mute); border-radius: 3px; padding: 1px 5px; font-size: 9.5px; height: 19px; display: inline-flex; align-items: center; gap: 3px; }
.statusbar .sb-btn:hover { color: var(--text); background: var(--bg3); }
.statusbar .sb-btn.on { color: var(--accent-bright); background: var(--accent-soft); border-color: rgba(230,145,56,.35); }
.statusbar .sb-sep { width: 1px; height: 13px; background: var(--line2); }
.statusbar .sb-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ok); }
.statusbar .sb-dot.dev { background: var(--blue); }

/* ------------------------------------------------------------------ Toast / 启动 */
.toast { position: fixed; left: 50%; bottom: 106px; transform: translateX(-50%) translateY(10px); background: #15181c; border: 1px solid var(--line3); color: var(--text); border-radius: 5px; padding: 7px 14px; font-size: 11.5px; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: opacity .16s, transform .16s; z-index: 3000; max-width: 70vw; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { border-color: #8a4444; color: #f0b4b4; }
.toast.ok { border-color: #3e6f4d; color: #b6e5c4; }
.boot { position: fixed; inset: 0; z-index: 5000; display: flex; align-items: center; justify-content: center; background: radial-gradient(ellipse at 50% 40%, #2c3138, #141619 70%); transition: opacity .25s; }
.boot.done { opacity: 0; pointer-events: none; }
.boot-card { width: 360px; text-align: center; }
.boot-logo { font-size: 34px; font-weight: 300; letter-spacing: 1px; color: #e9edf2; }
.boot-logo span { color: var(--accent); font-weight: 700; }
.boot-sub { margin-top: 4px; color: var(--text-dim); font-size: 12px; }
.boot-bar { height: 3px; background: #2a2e34; border-radius: 2px; overflow: hidden; margin: 20px 0 8px; }
.boot-bar i { display: block; height: 100%; width: 30%; background: linear-gradient(90deg, transparent, var(--accent), transparent); animation: bootslide 1.1s infinite ease-in-out; }
@keyframes bootslide { 0% { transform: translateX(-100%); } 100% { transform: translateX(430%); } }
.boot-note { color: var(--text-mute); font-size: 10.5px; }
.noscript { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: #1b1d21; color: #e6e9ee; font-size: 16px; z-index: 9999; }

/* ------------------------------------------------------------------ 模态框 */
.modal-root { position: fixed; inset: 0; z-index: 2000; pointer-events: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(8,9,11,.55); backdrop-filter: blur(1px); pointer-events: auto; }
.dialog { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: #2a2e34; border: 1px solid #0c0e10; border-radius: 6px; box-shadow: 0 18px 60px rgba(0,0,0,.65); display: flex; flex-direction: column; max-height: 88vh; pointer-events: auto; overflow: hidden; }
.dialog.nonmodal { box-shadow: 0 12px 40px rgba(0,0,0,.55); }
.dialog-head { height: 34px; flex: none; display: flex; align-items: center; gap: 8px; padding: 0 10px; background: linear-gradient(#3d424a, #31353c); border-bottom: 1px solid var(--line); cursor: move; }
.dialog-title { font-weight: 600; font-size: 12px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dialog-close { width: 22px; height: 22px; border: 1px solid transparent; background: transparent; color: var(--text-dim); border-radius: 3px; display: inline-flex; align-items: center; justify-content: center; }
.dialog-close:hover { background: #8a3a3a; color: #fff; }
.dialog-body { padding: 13px 15px; overflow: auto; min-height: 60px; }
.dialog-foot { flex: none; padding: 8px 12px; display: flex; justify-content: flex-end; gap: 6px; background: #262a30; border-top: 1px solid var(--line); }
.dialog-foot .left { margin-right: auto; display: flex; gap: 6px; }
.dialog-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; }
.form-row { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; }
.form-row > label { width: 92px; flex: none; color: var(--text-dim); font-size: 11px; }
.form-row > .control { flex: 1; min-width: 0; display: flex; align-items: center; gap: 5px; }
.form-row .control input[type="text"], .form-row .control input[type="number"], .form-row .control select { width: 100%; }
.form-section { margin: 4px 0 10px; padding-bottom: 8px; border-bottom: 1px solid var(--line2); }
.form-section h4 { margin: 0 0 7px; color: var(--text-dim); font-size: 10.5px; text-transform: uppercase; letter-spacing: .4px; }
.form-note { color: var(--text-mute); font-size: 10.5px; line-height: 1.7; }
.form-note code { color: #cdd4dd; background: var(--bg0); border: 1px solid var(--line2); padding: 0 4px; border-radius: 2px; font-family: var(--mono); font-size: 10px; }
.warn-box { border-left: 3px solid var(--warn); background: rgba(224,180,74,.09); padding: 7px 10px; color: #e9d6a5; font-size: 10.5px; border-radius: 0 3px 3px 0; line-height: 1.7; margin: 7px 0; }
.info-box { border-left: 3px solid var(--blue); background: var(--blue-soft); padding: 7px 10px; color: #cfe3f8; font-size: 10.5px; border-radius: 0 3px 3px 0; line-height: 1.7; margin: 7px 0; }

/* 材质编辑器 */
.mat-editor { display: grid; grid-template-columns: 420px 1fr; gap: 12px; min-width: 760px; }
.mat-slots { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; align-content: start; max-height: 470px; overflow: auto; padding-right: 3px; }
.mat-slot { border: 1px solid var(--line2); border-radius: 4px; background: var(--bg2); padding: 3px; cursor: pointer; position: relative; }
.mat-slot:hover { border-color: var(--line3); }
.mat-slot.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.mat-slot .preview { width: 100%; aspect-ratio: 1; border-radius: 3px; background: #1a1c20; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.mat-slot .preview img { width: 100%; height: 100%; display: block; }
.mat-slot .mat-name { font-size: 9.5px; color: var(--text-dim); padding: 3px 2px 1px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mat-slot .mat-used { position: absolute; top: 5px; right: 5px; background: var(--accent); color: #1b150c; font-size: 8px; border-radius: 2px; padding: 0 3px; font-weight: 700; }
.mat-form { min-width: 300px; }
.mat-form .mat-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.mat-form .mat-head input { font-size: 13px; font-weight: 600; flex: 1; }
.mat-preview-big { width: 92px; height: 92px; border-radius: 4px; background: #17191d; border: 1px solid var(--line2); overflow: hidden; flex: none; }
.mat-preview-big img { width: 100%; height: 100%; }
.swatch-row { display: flex; align-items: center; gap: 6px; }
.swatch-row .swatch-val { font-family: var(--mono); font-size: 10px; color: var(--text-mute); }
.color-presets { display: flex; gap: 3px; flex-wrap: wrap; }
.color-presets button { width: 16px; height: 16px; border: 1px solid rgba(255,255,255,.2); border-radius: 2px; padding: 0; }

/* 渲染窗口 */
.render-stage { display: flex; flex-direction: column; gap: 9px; align-items: center; min-width: 540px; }
.render-frame { background: #0c0d0f; border: 1px solid #000; border-radius: 3px; display: flex; align-items: center; justify-content: center; min-height: 260px; max-width: 76vw; overflow: hidden; }
.render-frame img, .render-frame canvas { max-width: 100%; max-height: 58vh; display: block; image-rendering: auto; }
.render-progress { width: 100%; height: 5px; background: #17191d; border-radius: 3px; overflow: hidden; }
.render-progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--blue), var(--accent)); transition: width .18s; }
.render-meta { display: flex; gap: 16px; color: var(--text-dim); font-size: 10.5px; flex-wrap: wrap; justify-content: center; }
.render-meta b { color: var(--text); font-family: var(--mono); }
.render-empty { color: var(--text-mute); font-size: 12px; padding: 60px 30px; }

/* 打开/保存列表 */
.doc-list { display: flex; flex-direction: column; gap: 3px; max-height: 330px; overflow: auto; min-width: 480px; }
.doc-row { display: flex; align-items: center; gap: 8px; padding: 7px 9px; border: 1px solid var(--line2); border-radius: 3px; background: var(--bg2); cursor: pointer; }
.doc-row:hover { border-color: var(--accent); }
.doc-row.active { border-color: var(--accent); background: var(--accent-soft); }
.doc-row .doc-name { flex: 1; font-size: 11.5px; }
.doc-row .doc-meta { color: var(--text-mute); font-size: 10px; }
.doc-row .doc-actions { display: flex; gap: 3px; }
.doc-empty { color: var(--text-mute); font-size: 11px; padding: 20px; text-align: center; }

/* 帮助 / 快捷键 */
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; min-width: 680px; }
.help-grid h3 { margin: 0 0 7px; font-size: 12px; color: var(--accent); }
.kbd-table { width: 100%; border-collapse: collapse; font-size: 10.5px; }
.kbd-table td { padding: 3px 5px; border-bottom: 1px solid rgba(255,255,255,.05); color: var(--text-dim); vertical-align: top; }
.kbd-table td:first-child { width: 120px; }
kbd { display: inline-block; background: var(--bg0); border: 1px solid var(--line2); border-bottom-width: 2px; border-radius: 3px; padding: 0 4px; font-family: var(--mono); font-size: 9.5px; color: var(--text); margin-right: 2px; }
.about-block { min-width: 560px; line-height: 1.8; color: var(--text-dim); font-size: 11.5px; }
.about-block h3 { color: var(--text); margin: 0 0 4px; font-size: 16px; }
.about-block .ver { color: var(--accent); font-family: var(--mono); font-size: 10.5px; }
.about-block p { margin: 7px 0; }
.about-block ul { margin: 5px 0; padding-left: 18px; }
.about-block li { margin: 2px 0; }

/* MAXScript 侦听器 */
.listener { display: flex; flex-direction: column; gap: 6px; min-width: 620px; }
.listener-log { height: 230px; overflow: auto; background: #0f1114; border: 1px solid var(--line2); border-radius: 3px; padding: 7px 9px; font-family: var(--mono); font-size: 10.5px; line-height: 1.65; white-space: pre-wrap; color: #b8d4c4; user-select: text; }
.listener-log .cmd { color: #f0c27c; }
.listener-log .err { color: #f08d8d; }
.listener-log .ok { color: #9ed3af; }
.listener-input { display: flex; gap: 6px; align-items: center; }
.listener-input span { color: var(--accent); font-family: var(--mono); }
.listener-input input { flex: 1; font-family: var(--mono); }
.listener-hints { display: flex; flex-wrap: wrap; gap: 4px; }
.listener-hints button { font-family: var(--mono); font-size: 9.5px; padding: 2px 6px; border: 1px solid var(--line2); background: var(--bg2); color: var(--text-dim); border-radius: 3px; }
.listener-hints button:hover { border-color: var(--accent); color: var(--accent-bright); }

/* 自检 */
.selftest { min-width: 720px; }
.selftest-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.selftest-head .verdict { font-size: 15px; font-weight: 700; padding: 3px 12px; border-radius: 4px; }
.selftest-head .verdict.pass { background: rgba(98,193,132,.16); color: #8ee0a7; border: 1px solid #3f7c52; }
.selftest-head .verdict.fail { background: rgba(224,106,106,.16); color: #f0a0a0; border: 1px solid #7d4040; }
.selftest-list { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 14px; max-height: 420px; overflow: auto; }
.selftest-row { display: flex; gap: 6px; align-items: baseline; font-size: 10.5px; padding: 2px 0; border-bottom: 1px solid rgba(255,255,255,.04); }
.selftest-row .st { width: 12px; flex: none; font-weight: 700; }
.selftest-row .st.ok { color: var(--ok); }
.selftest-row .st.no { color: var(--bad); }
.selftest-row .st-name { color: var(--text-dim); }
.selftest-row .st-detail { color: var(--text-mute); font-family: var(--mono); font-size: 9.5px; margin-left: auto; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 46%; }

/* 最大化视口 */
#app.max-view .explorer, #app.max-view .command, #app.max-view .ribbon, #app.max-view .timeline { display: none !important; }
#app.max-view .workspace { min-height: 0; }
#app.max-view .viewport { border: 0; }

/* 响应式 */
@media (max-width: 1320px) {
  .explorer { width: 200px; }
  .command { width: 306px; }
  .ribbon-btn span { display: none; }
  .ribbon-btn { min-width: 30px; }
}
@media (max-width: 1120px) {
  .explorer { width: 34px; }
  .explorer .explorer-body, .explorer .explorer-search, .explorer .explorer-foot, .explorer .explorer-title span { display: none; }
  .command { width: 286px; }
  .ribbon { display: none; }
}
@media (max-height: 720px) {
  .ribbon { display: none; }
  .timeline { height: 72px; }
  .explorer-body { padding-bottom: 4px; }
}
@media print {
  .titlebar, .menubar, .toolbar, .ribbon, .explorer, .command, .timeline, .statusbar, .nav-bar, .viewcube { display: none !important; }
  #app { height: auto; }
  .viewport { height: 100vh; }
}