:root {
  --bg: #0b1220;
  --panel: #111a2e;
  --panel-2: #16213a;
  --line: #22304f;
  --line-2: #2c3d63;
  --text: #e2e8f0;
  --muted: #8b9bb8;
  --accent: #38bdf8;
  --accent-ink: #04121f;
  --snap: #a855f7;
  --danger: #f87171;
  --ok: #34d399;
  --kbd: #1d2a47;
  --shadow: 0 12px 40px rgba(0, 0, 0, .45);
  --radius: 10px;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f4f2ec;
  --panel: #fffdf8;
  --panel-2: #f3f0e8;
  --line: #e2ddd0;
  --line-2: #d4cdbc;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #0284c7;
  --accent-ink: #ffffff;
  --kbd: #ece7da;
  --shadow: 0 12px 40px rgba(30, 41, 59, .18);
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 Inter, system-ui, sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
svg { display: block; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  min-height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}
.brand { display: flex; align-items: center; gap: 8px; font: 500 18px 'Space Grotesk', sans-serif; letter-spacing: -.01em; margin-right: 6px; white-space: nowrap; }
.brand svg { width: 28px; height: 28px; color: var(--accent); }
.brand b { color: var(--accent); font-weight: 700; }
.group { display: flex; gap: 2px; padding: 2px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px; }
.group button {
  border: 0; background: transparent; padding: 5px 10px; border-radius: 7px; cursor: pointer; white-space: nowrap;
}
.group button:hover { background: var(--line); }
.group button.icon { padding: 5px 7px; }
.group button svg, .toolbar svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.toggle[aria-pressed="true"] { background: var(--accent) !important; color: var(--accent-ink); }
.spacer { flex: 1; }
.gridsize input { width: 62px; padding: 4px 6px; border-radius: 7px; border: 1px solid var(--line); background: var(--bg); }

/* ---------- layout ---------- */
.layout { flex: 1; display: grid; grid-template-columns: 52px 232px 1fr 280px; min-height: 0; }
body.panels-hidden .layout { grid-template-columns: 52px 0 1fr 0; }
body.panels-hidden .panel { display: none; }
.toolbar {
  display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 8px 0;
  background: var(--panel); border-right: 1px solid var(--line); overflow-y: auto;
}
.toolbar button {
  width: 38px; height: 38px; display: grid; place-items: center;
  border: 1px solid transparent; border-radius: 9px; background: transparent; cursor: pointer; color: var(--muted);
}
.toolbar button:hover { background: var(--panel-2); color: var(--text); }
.toolbar button.active { background: var(--accent); color: var(--accent-ink); }
.toolbar .dot { fill: currentColor; }
.tool-sep { width: 24px; height: 1px; background: var(--line); margin: 6px 0; }

.panel { background: var(--panel); overflow-y: auto; overflow-x: hidden; min-width: 0; }
.panel.left { border-right: 1px solid var(--line); }
.panel.right { border-left: 1px solid var(--line); }
.panel section { padding: 12px; border-bottom: 1px solid var(--line); }
.panel h2 .mini-add { text-transform: none; }
.panel h2 { margin: 0 0 10px; font: 600 12px 'Space Grotesk', sans-serif; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); display: flex; justify-content: space-between; align-items: baseline; }
.panel h2 small { text-transform: none; letter-spacing: 0; font: 400 11px Inter, sans-serif; }
.muted { color: var(--muted); }
.tiny { font-size: 11.5px; margin: 8px 0 0; }

.sides-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 4px; }
.sides-grid button {
  aspect-ratio: 1; min-width: 0; border: 1px solid var(--line); background: var(--panel-2); border-radius: 8px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; padding: 3px;
  font: 500 10px 'JetBrains Mono', monospace; color: var(--muted);
}
.sides-grid button svg { width: 24px; height: 24px; fill: none; stroke: var(--accent); stroke-width: 1.6; }
.sides-grid button:hover { border-color: var(--accent); color: var(--text); }
.sides-grid button.current { outline: 2px solid var(--accent); outline-offset: -1px; color: var(--text); }

.search {
  width: 100%; padding: 7px 10px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); margin-bottom: 8px;
}
.preset-list { display: flex; flex-direction: column; gap: 2px; }
.preset-list button {
  display: flex; align-items: center; gap: 9px; text-align: left; padding: 5px 7px; border: 0; border-radius: 7px; background: transparent; cursor: pointer;
}
.preset-list button:hover { background: var(--panel-2); }
.preset-list svg { width: 28px; height: 28px; flex: none; fill: none; stroke: var(--accent); stroke-width: 1.5; }
.preset-list .pname { font-weight: 500; font-size: 13px; }
.preset-list .pdesc { color: var(--muted); font-size: 11px; line-height: 1.25; }

/* ---------- stage ---------- */
.stage { position: relative; min-width: 0; min-height: 0; overflow: hidden; }
#canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; display: block; }
.hud {
  position: absolute; left: 10px; bottom: 10px; display: flex; gap: 10px; pointer-events: none;
  font: 12px 'JetBrains Mono', monospace; color: var(--muted);
}
.hud span:not(:empty) { background: color-mix(in srgb, var(--panel) 85%, transparent); padding: 3px 8px; border-radius: 6px; border: 1px solid var(--line); }
.hint {
  position: absolute; left: 50%; top: 10px; transform: translateX(-50%); pointer-events: none; max-width: calc(100% - 24px);
  background: color-mix(in srgb, var(--panel) 88%, transparent); border: 1px solid var(--line); padding: 5px 12px; border-radius: 999px;
  font-size: 12.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.hint:empty { display: none; }
.toast {
  position: absolute; left: 50%; bottom: 18px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--panel); border: 1px solid var(--line-2); box-shadow: var(--shadow); padding: 8px 14px; border-radius: 10px;
  transition: .2s; max-width: 80%;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { border-color: var(--danger); color: var(--danger); }

/* ---------- properties ---------- */
.prop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 8px; }
.prop-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 3px; font-size: 11.5px; color: var(--muted); min-width: 0; }
.field input, .field select, .rt-grid input, .dlg input, .dlg select, .dlg textarea {
  width: 100%; padding: 5px 7px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); color: var(--text); font-size: 13px;
}
.field input[type="color"], .dlg input[type="color"] { padding: 2px; height: 30px; cursor: pointer; }
.field input[type="range"] { padding: 0; accent-color: var(--accent); }
.field .inline { display: flex; align-items: center; gap: 6px; }
.field .inline output { font: 12px 'JetBrains Mono', monospace; color: var(--text); min-width: 34px; text-align: right; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 12.5px; margin-top: 8px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-family: 'JetBrains Mono', monospace; text-align: right; }
.row-btns { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
button.btn, .row-btns button, .dlg-actions button, .dlg button.btn {
  padding: 6px 11px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--panel-2); cursor: pointer; font-size: 13px;
}
.row-btns button:hover, .dlg-actions button:hover, .dlg button.btn:hover { border-color: var(--accent); }
button.primary { background: var(--accent) !important; color: var(--accent-ink); border-color: var(--accent) !important; font-weight: 600; }
button.danger { color: var(--danger); }
.dash-picker { display: flex; gap: 4px; }
.dash-picker button { flex: 1; height: 28px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); cursor: pointer; display: grid; place-items: center; }
.dash-picker button.on { border-color: var(--accent); background: var(--panel-2); }
.dash-picker svg { width: 34px; height: 8px; }
.badge { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); color: var(--muted); margin-bottom: 8px; }
.badge.link { border-color: #facc15; color: #facc15; }

.rt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 8px; }
.rt-grid label { display: flex; flex-direction: column; gap: 3px; font-size: 11.5px; color: var(--muted); }
.rt-grid output { padding: 5px 0; font: 13px 'JetBrains Mono', monospace; color: var(--text); }
.err { color: var(--danger); font-size: 12.5px; min-height: 0; margin-top: 6px; }
.err:empty { display: none; }

.func-form { display: flex; gap: 6px; align-items: center; }
.func-form .yeq { font: 13px 'JetBrains Mono', monospace; color: var(--muted); }
.func-form input { flex: 1; min-width: 0; padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); font-family: 'JetBrains Mono', monospace; font-size: 13px; }
.func-form button { width: 32px; height: 32px; border-radius: 8px; border: 0; cursor: pointer; font-size: 18px; }
.func-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.func-item { display: flex; align-items: center; gap: 6px; padding: 4px 6px; border-radius: 8px; border: 1px solid var(--line); cursor: pointer; }
.func-item.sel { border-color: var(--accent); }
.func-item .sw { width: 12px; height: 12px; border-radius: 50%; flex: none; }
.func-item .sw-line { flex: none; display: grid; place-items: center; padding: 3px 2px; border-radius: 5px; cursor: pointer; }
.func-item .sw-line:hover { background: var(--panel-2); }
input.mono { font-family: 'JetBrains Mono', monospace !important; }
.chk-row { display: flex; align-items: center; gap: 8px; font-size: 12.5px; margin-top: 8px; cursor: pointer; }
.chk-row input { accent-color: var(--accent); }
.func-item code { flex: 1; font: 12.5px 'JetBrains Mono', monospace; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.func-item button { border: 0; background: transparent; cursor: pointer; color: var(--muted); padding: 2px 4px; border-radius: 5px; }
.func-item button:hover { color: var(--text); background: var(--panel-2); }
.func-item.hidden code { opacity: .45; text-decoration: line-through; }

/* daily puzzle */
.brand { cursor: pointer; border-radius: 8px; padding: 2px 4px; }
.brand:hover svg { transform: rotate(-12deg); }
.brand svg { transition: transform .25s; }
.puzzle-bar { position: absolute; left: 50%; top: 10px; transform: translateX(-50%); width: min(620px, calc(100% - 24px)); z-index: 18;
  background: var(--panel); border: 1px solid #facc15; border-radius: 14px; box-shadow: var(--shadow); padding: 12px 14px; }
.puzzle-bar[hidden] { display: none; }
.pz-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.pz-head b { font: 600 15px 'Space Grotesk', sans-serif; color: #facc15; }
.pz-x { border: 1px solid var(--line-2); background: var(--panel-2); border-radius: 8px; padding: 3px 10px; cursor: pointer; }
.pz-q { margin: 6px 0 8px; font-size: 15px; }
.pz-row { display: flex; gap: 6px; flex-wrap: wrap; }
.pz-row input { flex: 1; min-width: 140px; padding: 7px 10px; border: 1px solid var(--line-2); border-radius: 8px; background: var(--bg); color: var(--text); font: 15px 'JetBrains Mono', monospace; }
.pz-row button { padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--panel-2); cursor: pointer; }
.pz-result { margin-top: 8px; font-size: 13.5px; min-height: 0; }
.pz-result:empty { display: none; }
.pz-result.good { color: var(--ok); }
.pz-result.bad { color: var(--danger); }
.pz-foot { font-size: 11.5px; margin-top: 6px; }
body.puzzle-mode #tglArea, body.puzzle-mode #tglRightTri, body.puzzle-mode #tglExact, body.puzzle-mode [data-tool="measure"], body.puzzle-mode [data-tool="angle"],
body.puzzle-mode #measureSection, body.puzzle-mode #rtSection, body.puzzle-mode .kv, body.puzzle-mode details.corners, body.puzzle-mode .scale-row, body.puzzle-mode #btnData { display: none !important; }
body.puzzle-mode .hint, body.puzzle-mode nav[aria-label="Measurement tools"] { display: none; }
.confetti { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 25; }
.confetti i { position: absolute; top: -12px; width: 8px; height: 14px; border-radius: 2px; animation: fall linear forwards; }
@keyframes fall { to { top: 110%; transform: translateX(40px) rotate(720deg); } }

/* bound inputs, stats, examples */
input.bound { border-color: #facc15 !important; color: #facc15; font-family: 'JetBrains Mono', monospace; }
.stats-out .kv { margin-top: 0; }
.stats-kv dd { overflow-wrap: anywhere; }
.ex-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.ex-card { display: flex; flex-direction: column; gap: 4px; text-align: left; padding: 10px 12px; border: 1px solid var(--line-2); border-radius: 10px; background: var(--panel-2); cursor: pointer; }
.ex-card:hover { border-color: var(--accent); }
.ex-card b { font: 600 14px 'Space Grotesk', sans-serif; }
.ex-card span { color: var(--muted); font-size: 12.5px; }

/* measurements card */
.measure-card .m-row { display: flex; justify-content: space-between; gap: 10px; font-size: 12.5px; padding: 2px 0; }
.measure-card .m-row span { color: var(--muted); }
.measure-card .m-row b { font: 500 12.5px 'JetBrains Mono', monospace; text-align: right; overflow-wrap: anywhere; }
.measure-card .m-row.big b { font-size: 16px; color: var(--ok); }
.measure-card h2 small { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* sliders */
.mini-add { border: 1px solid var(--line-2); background: var(--panel-2); color: var(--text); border-radius: 6px; width: 22px; height: 22px; cursor: pointer; font-size: 15px; line-height: 1; }
.mini-add:hover { border-color: var(--accent); }
.slider-list { display: flex; flex-direction: column; gap: 6px; }
.slider-card { border: 1px solid var(--line); border-radius: 9px; padding: 6px 8px; }
.sl-top { display: flex; align-items: center; gap: 5px; }
.sl-name { font: 600 14px 'JetBrains Mono', monospace; color: var(--accent); min-width: 12px; }
.sl-top input { flex: 1; min-width: 0; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); font-size: 13px; }
.sl-btn { border: 0; background: transparent; color: var(--muted); cursor: pointer; padding: 2px 5px; border-radius: 5px; font-size: 12px; }
.sl-btn:hover { background: var(--panel-2); color: var(--text); }
.sl-range { display: flex; align-items: center; gap: 6px; margin-top: 4px; }
.sl-range input { flex: 1; accent-color: var(--accent); }
.sl-more { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 6px; }
.sl-more[hidden] { display: none; }
.sl-more input { width: 100%; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); font-size: 12.5px; }
.follow-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.follow-row .badge { margin: 0; }
.follow-row .btn { padding: 2px 9px; font-size: 12px; border-radius: 7px; border: 1px solid var(--line-2); background: var(--panel-2); cursor: pointer; }
.member-list { display: flex; flex-direction: column; gap: 2px; margin-top: 4px; }
.member { text-align: left; border: 1px solid var(--line); background: transparent; border-radius: 7px; padding: 4px 8px; cursor: pointer; font-size: 12.5px; }
.member:hover { border-color: var(--accent); }

/* command bar */
.cmd-ico { font-size: 13px; opacity: .8; }
#btnCmd kbd { margin-left: 4px; }
.cmdbar { position: absolute; left: 50%; top: 12px; transform: translateX(-50%); width: min(640px, calc(100% - 24px)); z-index: 20;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.cmd-in { display: flex; align-items: center; gap: 8px; padding: 10px 12px; }
.cmd-slash { font: 600 16px 'JetBrains Mono', monospace; color: var(--accent); }
.cmd-in input { flex: 1; border: 0; background: transparent; font: 15px 'JetBrains Mono', monospace; outline: none; color: var(--text); }
.cmd-err { color: var(--danger); font-size: 13px; padding: 0 14px 8px; }
.cmd-err:empty { display: none; }
.cmd-sug { border-top: 1px solid var(--line); max-height: 300px; overflow-y: auto; }
.cmd-row { display: flex; gap: 12px; align-items: baseline; padding: 7px 14px; cursor: pointer; }
.cmd-row code { background: transparent; padding: 0; color: var(--text); white-space: nowrap; }
.cmd-row span { font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cmd-row:hover, .cmd-row.on { background: var(--panel-2); }

/* tour */
.tour { position: fixed; inset: 0; z-index: 70; }
.tour-spot { position: fixed; border-radius: 12px; box-shadow: 0 0 0 9999px rgba(2, 6, 23, .62); transition: all .25s ease; pointer-events: none; outline: 2px solid var(--accent); }
.tour-bubble { position: fixed; width: min(340px, calc(100vw - 24px)); background: var(--panel); border: 1px solid var(--line-2); border-radius: 14px; box-shadow: var(--shadow); padding: 14px 16px; }
.tour-bubble h4 { margin: 2px 0 6px; font: 600 17px 'Space Grotesk', sans-serif; }
.tour-bubble p { margin: 0 0 12px; color: var(--text); font-size: 14px; }
.tour-step { font-size: 11.5px; color: var(--accent); font-weight: 600; letter-spacing: .05em; }
.tour-actions { display: flex; justify-content: flex-end; gap: 8px; }
.tour-actions .btn { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line-2); background: var(--panel-2); cursor: pointer; }

/* floating touch buttons */
.touch-bar { position: absolute; right: 12px; bottom: 12px; display: flex; gap: 6px; z-index: 15; }
.touch-bar[hidden] { display: none; }
.touch-bar button { width: 48px; height: 48px; border-radius: 14px; border: 1px solid var(--line-2); background: color-mix(in srgb, var(--panel) 92%, transparent); color: var(--text); display: grid; place-items: center; box-shadow: var(--shadow); cursor: pointer; }
.touch-bar svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.touch-bar #tbMenu svg { fill: currentColor; stroke: none; }
body.touch .toolbar button { width: 44px; height: 44px; }

/* scale row & aspect lock */
.scale-row { display: flex; align-items: center; gap: 4px; margin-top: 8px; flex-wrap: wrap; }
.scale-row .lbl { font-size: 11.5px; color: var(--muted); flex-basis: 100%; margin-bottom: -1px; }
.scale-row .x { color: var(--muted); font-size: 13px; }
.scale-row input { flex: 1; min-width: 40px; width: 40px; padding: 5px 6px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); color: var(--text); font-size: 13px; }
.scale-row button { padding: 5px 8px; border-radius: 7px; border: 1px solid var(--line-2); background: var(--panel-2); cursor: pointer; font-size: 12.5px; }
.scale-row button:hover { border-color: var(--accent); }
.hlabel { display: flex; align-items: center; justify-content: space-between; }
.lock-aspect { border: 0; background: transparent; cursor: pointer; font-size: 11px; padding: 0 3px; border-radius: 5px; opacity: .35; filter: grayscale(1); line-height: 1; }
.lock-aspect.on { opacity: 1; filter: none; background: color-mix(in srgb, var(--accent) 25%, transparent); }

/* objects list */
.obj-list { display: flex; flex-direction: column; gap: 1px; max-height: 240px; overflow-y: auto; }
.obj-row { display: flex; align-items: center; gap: 7px; padding: 3px 6px; border-radius: 7px; cursor: pointer; font-size: 12.5px; }
.obj-row:hover { background: var(--panel-2); }
.obj-row.sel { background: color-mix(in srgb, var(--accent) 18%, transparent); }
.obj-row.hidden .nm, .obj-row.hidden .glyph { opacity: .4; }
.obj-row .glyph { width: 14px; text-align: center; font-size: 13px; }
.obj-row .nm { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.obj-row button { border: 0; background: transparent; color: var(--muted); padding: 2px 3px; border-radius: 5px; cursor: pointer; opacity: .45; display: grid; place-items: center; }
.obj-row:hover button, .obj-row button.on { opacity: 1; }
.obj-row button.on { color: var(--accent); }
.obj-row button:hover { background: var(--line); color: var(--text); }
.obj-row button.del:hover { color: var(--danger); }
.obj-row button:disabled { opacity: .2 !important; cursor: not-allowed; }
.obj-row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.obj-row.flashing { animation: rowflash 1.5s ease-out; }
@keyframes rowflash { 0%, 30% { background: color-mix(in srgb, var(--accent) 45%, transparent); } }

details.corners { margin-top: 10px; border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; }
details.corners summary { cursor: pointer; font-size: 12.5px; color: var(--muted); }
.corner-grid { display: grid; grid-template-columns: 22px 1fr 1fr; gap: 4px 6px; margin-top: 8px; align-items: center; }
.corner-grid .nm { font: 12px 'JetBrains Mono', monospace; color: var(--muted); }
.corner-grid input { width: 100%; min-width: 0; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); font-size: 12.5px; }

/* ---------- context menu ---------- */
.ctxmenu {
  position: fixed; z-index: 50; min-width: 210px; padding: 5px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--line-2); box-shadow: var(--shadow);
}
.ctxmenu .mi {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 6px 10px; border-radius: 7px; cursor: pointer; position: relative; white-space: nowrap;
}
.ctxmenu .mi:hover, .ctxmenu .mi.open { background: var(--panel-2); }
.ctxmenu .mi.danger { color: var(--danger); }
.ctxmenu .mi.disabled { opacity: .4; pointer-events: none; }
.ctxmenu .mi kbd, .ctxmenu .mi .arrow { color: var(--muted); font-size: 11px; }
.ctxmenu .sep { height: 1px; background: var(--line); margin: 4px 2px; }
.ctxmenu .mh { padding: 4px 10px 2px; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.ctxmenu .snap-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--snap); display: inline-block; margin-right: 6px; }

/* ---------- modals ---------- */
.overlay {
  position: fixed; inset: 0; z-index: 60; background: rgba(2, 6, 23, .55); display: grid; place-items: center; padding: 16px;
  animation: fade .12s ease-out;
}
@keyframes fade { from { opacity: 0; } }
.dlg {
  width: min(440px, 100%); max-height: min(86vh, 760px); display: flex; flex-direction: column;
  background: var(--panel); border: 1px solid var(--line-2); border-radius: 14px; box-shadow: var(--shadow);
}
.dlg.wide { width: min(720px, 100%); }
.dlg header { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 10px; }
.dlg header h3 { margin: 0; font: 600 17px 'Space Grotesk', sans-serif; }
.dlg header .x { border: 0; background: transparent; font-size: 20px; cursor: pointer; color: var(--muted); width: 30px; height: 30px; border-radius: 8px; }
.dlg header .x:hover { background: var(--panel-2); color: var(--text); }
.dlg .body { padding: 0 16px 8px; overflow-y: auto; }
.dlg .dlg-err { color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, transparent); border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent); padding: 8px 10px; border-radius: 8px; margin: 8px 16px 0; font-size: 13px; }
.dlg .dlg-err:empty { display: none; }
.dlg-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 16px 14px; }
.dlg p { margin: 6px 0 10px; }
.dlg label.chk { display: flex; align-items: center; gap: 8px; margin: 8px 0; cursor: pointer; font-size: 13px; }
.dlg label.chk input { width: auto; accent-color: var(--accent); }
.dlg .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
.dlg .grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }

table.dims { width: 100%; border-collapse: collapse; font-size: 13px; }
table.dims th { text-align: left; font-weight: 500; color: var(--muted); font-size: 11.5px; padding: 4px 6px; }
table.dims td { padding: 3px 6px; }
table.dims td.nm { font-family: 'JetBrains Mono', monospace; color: var(--muted); width: 40px; }
table.dims input.changed { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--bg)); }
.sumline { font-size: 12.5px; margin-top: 8px; color: var(--muted); }
.sumline.bad { color: var(--danger); }
.sumline.good { color: var(--ok); }

.code-box { width: 100%; font: 12px 'JetBrains Mono', monospace; resize: vertical; min-height: 96px; word-break: break-all; }

.saved-list { display: flex; flex-direction: column; gap: 6px; }
.saved-item { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; }
.saved-item .meta { flex: 1; min-width: 0; }
.saved-item .meta b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.saved-item .meta span { color: var(--muted); font-size: 12px; }

/* settings */
.set-group h4 { margin: 14px 0 4px; font: 600 11.5px 'Space Grotesk', sans-serif; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 8px 4px; border-bottom: 1px solid var(--line); }
.set-row .lbl { min-width: 0; }
.set-row .lbl b { font-weight: 500; display: block; }
.set-row .lbl span { color: var(--muted); font-size: 12px; }
.set-row .ctl { flex: none; width: 150px; display: flex; justify-content: flex-end; }
.set-row .ctl input[type="number"], .set-row .ctl input[type="text"] { width: 150px; }
.set-row .ctl select { width: 190px; }
.set-row .ctl input[type="color"] { width: 60px; }
.switch { position: relative; width: 40px; height: 22px; flex: none; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; z-index: 1; }
.switch span { position: absolute; inset: 0; background: var(--line-2); border-radius: 999px; transition: .15s; }
.switch span::after { content: ''; position: absolute; left: 3px; top: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: .15s; }
.switch input:checked + span { background: var(--accent); }
.switch input:checked + span::after { transform: translateX(18px); }
.switch input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.empty { color: var(--muted); text-align: center; padding: 24px 0; }
mark { background: color-mix(in srgb, #facc15 45%, transparent); color: inherit; border-radius: 3px; padding: 0 1px; }

/* settings chips & reset */
.chips { display: flex; flex-wrap: wrap; gap: 5px; margin: -2px 0 6px; }
.chip { border: 1px solid var(--line-2); background: var(--panel-2); border-radius: 999px; padding: 3px 10px; font-size: 12px; cursor: pointer; color: var(--muted); }
.chip:hover { color: var(--text); border-color: var(--accent); }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.set-row .ctl { gap: 6px; align-items: center; width: auto; min-width: 150px; }
.set-row .reset { border: 0; background: transparent; color: var(--accent); cursor: pointer; font-size: 16px; line-height: 1; padding: 2px 4px; border-radius: 6px; }
.set-row .reset:hover { background: var(--panel-2); }
.set-group { scroll-margin-top: 8px; }

/* help */
.help-layout { display: grid; grid-template-columns: 200px 1fr; gap: 14px; min-height: 380px; }
.help-toc { display: flex; flex-direction: column; gap: 1px; max-height: 60vh; overflow-y: auto; border-right: 1px solid var(--line); padding-right: 8px; }
.help-toc button { text-align: left; border: 0; background: transparent; padding: 5px 8px; border-radius: 7px; cursor: pointer; font-size: 13px; }
.help-toc button:hover { background: var(--panel-2); }
.help-toc button.on { background: var(--panel-2); color: var(--accent); }
.help-body { max-height: 60vh; overflow-y: auto; }
.help-topic { padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px solid var(--line); }
.help-topic h4 { margin: 0 0 4px; font: 600 15px 'Space Grotesk', sans-serif; }
.help-topic ul { padding-left: 18px; margin: 6px 0; }
.help-topic li { margin: 3px 0; }
kbd { font: 11px 'JetBrains Mono', monospace; background: var(--kbd); border: 1px solid var(--line-2); border-bottom-width: 2px; padding: 0 5px; border-radius: 5px; }
code { font: 12.5px 'JetBrains Mono', monospace; background: var(--panel-2); padding: 1px 4px; border-radius: 4px; }
table.keys td { padding: 3px 8px 3px 0; vertical-align: top; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 52px 200px 1fr 250px; }
}
@media (max-width: 820px) {
  .layout { grid-template-columns: 48px 1fr; }
  .panel { display: none; }
  body.panels-shown .panel { display: block; position: fixed; top: 52px; bottom: 0; z-index: 30; width: min(300px, 85vw); box-shadow: var(--shadow); }
  body.panels-shown .panel.left { left: 48px; }
  body.panels-shown .panel.right { right: 0; }
  .help-layout { grid-template-columns: 1fr; }
  .help-toc { display: none; }
  .brand span { display: none; }
}