/* CADgang UI — CW&T Design System: ink + paper, Space Mono, hairline rules, radius 0.
   Tokens come from cwandt.css (linked first). */

* { box-sizing: border-box; }

/* dot-grid color as a token so it flips with the theme */
:root { --dot: #d8d7d3; }

/* ------------------------------------------------------------ dark theme
   Overrides the cwandt.css tokens (do NOT edit cwandt.css). Warm, never cool. */
:root[data-theme="dark"] {
  --paper: #1a1a18;
  --paper-2: #242320;
  --paper-3: #2c2b28;
  --ink: #f0efec;
  --ink-soft: #b5b3ae;
  --ink-faint: #7a7873;
  --rule: #3a3a38;
  --rule-soft: #2e2d2a;
  --dot: #3a3a38;
  --signal-red: #e34d4d;
}

html, body {
  margin: 0; height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-16); line-height: var(--lh-body);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

body { display: flex; flex-direction: column; }

/* ------------------------------------------------------------ header */

header {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; row-gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border-bottom: var(--bw-hair) solid var(--rule);
  background: var(--paper); flex: 0 0 auto;
}

.brand { display: flex; align-items: baseline; gap: var(--sp-2); min-width: 0; }

.logo {
  font-weight: 700; font-size: var(--fs-16);
  letter-spacing: var(--ls-label); color: var(--ink);
  white-space: nowrap;
}

.proj-sep { color: var(--ink-faint); font-size: var(--fs-16); }
.project-name {
  font-weight: 400; font-size: var(--fs-14); color: var(--ink-soft);
  letter-spacing: var(--ls-label); cursor: pointer; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; max-width: 260px;
  transition: opacity var(--dur-fast) var(--ease);
}
.project-name:hover { opacity: 0.55; color: var(--ink); }

.toolbar { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.toolbar label {
  color: var(--ink-faint); display: flex; align-items: center; gap: var(--sp-2);
  text-transform: uppercase; font-size: var(--fs-12); letter-spacing: var(--ls-label);
}
.toolbar .sep { width: 1px; height: 20px; background: var(--rule); }

.version { display: inline-flex; align-items: baseline; gap: 6px; white-space: nowrap; }
.version .idcode {
  font-weight: 700; font-size: var(--fs-14); letter-spacing: 0.06em; color: var(--ink);
}
.version .idver { color: var(--ink-faint); font-size: var(--fs-12); }

/* ------------------------------------------------------------ controls */

button {
  background: var(--paper); color: var(--ink);
  border: var(--bw-hair) solid var(--ink); border-radius: var(--radius-0);
  padding: 10px 18px; cursor: pointer;
  font-family: var(--font-mono); font-weight: 700; font-size: var(--fs-14);
  text-transform: uppercase; letter-spacing: 0.06em;
  transition: opacity var(--dur-fast) var(--ease);
}
button:hover { opacity: 0.55; }
button:active { opacity: 0.8; }
button.primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
button.ghost { border-color: var(--rule); }
button.danger { color: var(--signal-red); border-color: var(--signal-red); background: var(--paper); }

select, input[type="text"], input[type="number"] {
  background: var(--paper); color: var(--ink);
  border: var(--bw-hair) solid var(--rule); border-radius: var(--radius-0);
  padding: 6px 8px; font-family: var(--font-mono); font-size: var(--fs-14);
  transition: border-color var(--dur-fast) var(--ease);
}
select:focus, input[type="text"]:focus, input[type="number"]:focus {
  outline: none; border-color: var(--ink);
}
input[type="number"] { width: 56px; }

input[type="range"] { accent-color: var(--ink); }
#resolutionValue { color: var(--ink); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------ layout */

main { flex: 1; display: flex; min-height: 0; }

/* stacked split: graph on top, viewport below */
main.stacked { flex-direction: column; }
main.stacked #panel {
  border-right: none; border-bottom: var(--bw-hair) solid var(--rule);
  min-width: 0; min-height: 160px;
}
main.stacked #dragbar { cursor: row-resize; }
main.stacked #viewport { min-height: 0; }

#panel {
  flex: 0 0 42%;
  background: var(--paper-2); border-right: var(--bw-hair) solid var(--rule);
  display: flex; flex-direction: column; min-width: 280px; overflow: hidden;
}

/* ------------------------------------------------------------ vars bar */

#varsBar {
  flex: 0 0 auto; display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  padding: 6px var(--sp-3); background: var(--paper);
  border-bottom: var(--bw-hair) solid var(--rule);
}
.vars-label {
  font-size: var(--fs-12); font-weight: 700; color: var(--ink-faint);
  text-transform: uppercase; letter-spacing: var(--ls-label); margin-right: 2px;
}
#varsChips { display: contents; }
.var-chip {
  display: inline-flex; align-items: center; gap: 4px;
  border: var(--bw-hair) solid var(--rule); padding: 2px 4px 2px 8px;
  font-size: var(--fs-14); color: var(--ink); background: var(--paper);
}
.var-chip .vk { font-weight: 700; }
.var-chip .veq { color: var(--ink-faint); }
.var-chip .vv { font-variant-numeric: tabular-nums; cursor: text; }
.var-chip .vv-edit { width: 52px; padding: 0 3px; font-size: var(--fs-14); }
.var-chip .vdel {
  padding: 0 3px; font-size: 14px; line-height: 1; border: none; background: transparent;
  color: var(--ink-faint);
}
.var-chip .vdel:hover { color: var(--signal-red); opacity: 1; }
#varAdd { width: 120px; padding: 3px 6px; font-size: var(--fs-14); }

/* ------------------------------------------------------------ graph canvas */

#graph {
  flex: 1; position: relative; overflow: hidden;
  cursor: grab;
  background-color: var(--paper-2);
  background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
  touch-action: none;
}
#graph.panning { cursor: grabbing; }

#world { position: absolute; left: 0; top: 0; transform-origin: 0 0; width: 0; height: 0; }

#wires { position: absolute; left: 0; top: 0; width: 1px; height: 1px; overflow: visible; pointer-events: none; }
#wires path.wire-hit { stroke: transparent; stroke-width: 16; fill: none; pointer-events: stroke; cursor: crosshair; }
#wires path.wire { stroke: var(--ink); stroke-width: 1.75; fill: none; vector-effect: non-scaling-stroke; pointer-events: none; }
#wires g.wire-group:hover path.wire { stroke: var(--signal-red); stroke-width: 2; }
/* wire hovered as a connection (JS-driven) → highlight the wire + both endpoint blocks in green */
#wires g.wire-group.hover path.wire { stroke: var(--signal-green); stroke-width: 2.75; }
#wires path.wire-temp { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 4 4; fill: none; vector-effect: non-scaling-stroke; pointer-events: none; }

.graph-hint {
  position: absolute; left: 0; bottom: 0; color: var(--ink-faint);
  font-size: var(--fs-12); text-transform: uppercase; letter-spacing: var(--ls-label);
  pointer-events: none; z-index: 3;
  padding: 5px 10px; background: var(--paper);
  border-top: var(--bw-hair) solid var(--rule); border-right: var(--bw-hair) solid var(--rule);
}

/* ------------------------------------------------------------ nodes */

.gnode {
  position: absolute; width: 208px;
  background: var(--paper); border: var(--bw-hair) solid var(--rule);
  border-radius: var(--radius-0); user-select: none;
}
.gnode.output { border: var(--bw-bold) solid var(--ink); }
/* marquee-selected blocks */
.gnode.selected { box-shadow: 0 0 0 2px var(--signal-orange); }
/* endpoint blocks of a hovered wire — green glow, distinct from the orange selection ring */
.gnode.wire-hover { box-shadow: 0 0 0 2px var(--signal-green), 0 0 12px -2px var(--signal-green); }

/* category → machined-metal left edge stripe */
.gnode::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--metal-titanium);
}
.gnode.cat-primitive::before { background: var(--metal-stainless); }
.gnode.cat-boolean::before   { background: var(--metal-graphite); }
.gnode.cat-modify::before    { background: var(--metal-brass); }
.gnode.cat-output::before    { background: var(--signal-orange); }
/* the exact (B-rep) lineage reads as blueprint blue against the metals */
.gnode.cat-sketch::before    { background: var(--blueprint-light); }
.gnode.cat-brep::before      { background: var(--blueprint); }
/* color mode: per-node hue stripe (set inline as --stripe) wins over category */
html.color-mode .gnode::before { background: var(--stripe, var(--metal-titanium)); }

.gnode-head {
  display: flex; align-items: center; gap: var(--sp-2);
  padding: 6px 8px; border-bottom: var(--bw-hair) solid var(--rule);
  background: var(--paper); cursor: grab;
}
.gnode-head:active { cursor: grabbing; }
.gnode-head .badge {
  font-size: var(--fs-12); color: var(--ink-faint);
  text-transform: uppercase; letter-spacing: var(--ls-label); white-space: nowrap;
}
.gnode-head .gname {
  font-weight: 700; flex: 1; overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; cursor: text; font-size: var(--fs-14); color: var(--ink);
}
.gnode-head .gname-edit { flex: 1; width: 100%; padding: 1px 4px; font-size: var(--fs-14); }

/* OUT pill — status-pill exception (radius-pill) */
.gnode-head .oradio {
  padding: 2px 7px; font-size: var(--fs-12); font-weight: 700; line-height: 1.2;
  text-transform: uppercase; letter-spacing: var(--ls-label);
  border: var(--bw-hair) solid var(--rule); border-radius: var(--radius-pill);
  background: var(--paper); color: var(--ink-faint);
}
.gnode-head .oradio.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.gnode-head .odel {
  padding: 0 6px; font-size: 15px; font-weight: 700; line-height: 1;
  border: var(--bw-hair) solid transparent; background: transparent; color: var(--ink);
}
.gnode-head .odel:hover { color: var(--signal-red); opacity: 1; }

.gnode-body { padding: 6px 8px 8px; position: relative; }

.port-row {
  position: relative; display: flex; align-items: center;
  min-height: 20px; margin: 2px 0; color: var(--ink-soft); font-size: var(--fs-14);
}
.plabel { padding-left: 8px; text-transform: uppercase; letter-spacing: var(--ls-label); font-size: var(--fs-12); }

/* ports — circular dots (sanctioned radius exception) */
.gport {
  width: 10px; height: 10px; border-radius: var(--radius-pill);
  background: var(--paper); border: 1.5px solid var(--ink);
  cursor: crosshair; flex: 0 0 auto; box-sizing: border-box;
  transition: transform var(--dur-fast) var(--ease);
}
.gport:hover { background: var(--ink); transform: scale(1.25); }
.gport.in { position: absolute; left: -6px; top: 50%; transform: translateY(-50%); }
.gport.in:hover { transform: translateY(-50%) scale(1.25); }
.gport.out { position: absolute; right: -6px; top: 16px; }
.gport.connected { background: var(--ink); }
/* wire-drag: compatible drop target under the cursor */
.gport.drop-target { background: var(--signal-orange); border-color: var(--signal-orange); transform: scale(1.6); box-shadow: 0 0 0 3px color-mix(in srgb, var(--signal-orange) 35%, transparent); }
.gport.in.drop-target { transform: translateY(-50%) scale(1.6); }

.param-row {
  display: flex; align-items: center; gap: var(--sp-2); margin-top: 5px;
  color: var(--ink-soft);
}
.param-row .pname {
  width: 56px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  text-transform: uppercase; letter-spacing: var(--ls-label); font-size: var(--fs-12);
}
.param-row input { flex: 0 0 auto; font-size: var(--fs-12); }
.param-row > input { width: 66px; padding: 4px 6px; }
/* expression-valued params read in italic (Space Mono Italic is vendored) */
.param-row input.expr { font-style: italic; }

/* read-only asset-reference param (imported_mesh / extrude_face) */
.param-row .pval {
  flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: var(--fs-12); color: var(--ink-soft); font-style: italic; text-align: right;
}
/* empty asset → "load file…" affordance (button styled as an inline link) */
.param-row .pload {
  flex: 1 1 auto; min-width: 0; padding: 3px 6px; text-align: right;
  border: var(--bw-hair) dashed var(--rule); background: transparent;
  color: var(--signal-orange); font-size: var(--fs-12); font-weight: 700;
  text-transform: none; letter-spacing: 0;
}
.param-row .pload:hover { border-color: var(--signal-orange); opacity: 1; }
/* free-text param input (e.g. export filename) */
.param-row .ptext { flex: 1 1 auto; min-width: 0; width: auto; padding: 4px 6px; font-size: var(--fs-12); }

/* export_stl download button (footer row on the block) */
.export-row { margin-top: 6px; display: flex; }
.export-dl {
  flex: 1 1 auto; padding: 5px 8px; font-size: var(--fs-12);
  border-color: var(--signal-orange); color: var(--signal-orange); background: var(--paper);
}
.export-dl:hover:not(:disabled) { opacity: 0.55; }
.export-dl:disabled { border-color: var(--rule); color: var(--ink-faint); cursor: not-allowed; opacity: 1; }

/* vec3: label on its own line, three components span the full node width */
.param-row.vec3 { flex-direction: column; align-items: stretch; gap: 3px; }
.param-row.vec3 .triple { display: flex; gap: 6px; }
.param-row.vec3 .triple input { flex: 1 1 0; width: auto; min-width: 0; }

/* select / bool / points — the B-rep param widgets */
.param-row .pselect {
  flex: 1 1 auto; min-width: 0; padding: 3px 6px;
  font: inherit; font-size: var(--fs-12);
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 2px;
}
.param-row .pselect:hover { border-color: var(--blueprint); }
.param-row .pcheck { flex: 0 0 auto; margin: 0; accent-color: var(--blueprint); cursor: pointer; }
.param-row.points { flex-direction: column; align-items: stretch; gap: 3px; }
.param-row.points .ppoints {
  width: 100%; min-width: 0; resize: vertical;
  font: inherit; font-size: var(--fs-12); line-height: 1.45;
  padding: 4px 6px; background: var(--surface); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 2px;
}
.param-row.points .ppoints:focus { outline: none; border-color: var(--blueprint); }

/* bounded scalar params: label + number on top, a full-width drag slider below */
.param-row.has-slider { flex-direction: column; align-items: stretch; gap: 4px; }
.pslider-top { display: flex; align-items: center; gap: var(--sp-2); }
.pslider-top .pname { flex: 1; width: auto; }
.pslider-top input { flex: 0 0 auto; width: 66px; padding: 4px 6px; }
.param-slider {
  width: 100%; margin: 0; height: 14px; cursor: pointer;
  accent-color: var(--ink); background: transparent;
}
.param-slider:disabled { opacity: 0.35; cursor: not-allowed; }

/* ------------------------------------------------------------ dragbar + viewport */

#dragbar {
  flex: 0 0 5px; cursor: col-resize; background: var(--rule);
  position: relative; transition: opacity var(--dur-fast) var(--ease);
}
#dragbar:hover, #dragbar.active { background: var(--ink); }

#viewport { flex: 1; position: relative; min-width: 0; }
#viewport canvas { display: block; }

/* floating tool buttons over the viewport / graph */
.vp-tool {
  position: absolute; top: 10px; right: 10px; z-index: 6;
  padding: 6px 12px; font-size: var(--fs-12);
  background: var(--paper); border-color: var(--rule);
}
.vp-tool.active { background: var(--signal-orange); color: var(--paper); border-color: var(--signal-orange); opacity: 1; }
.graph-tool {
  position: absolute; top: 10px; right: 10px; z-index: 4;
  padding: 6px 12px; font-size: var(--fs-12); background: var(--paper); border-color: var(--rule);
}

/* rectangular multi-select marquee (drawn in graph screen space) */
.marquee {
  position: absolute; z-index: 4; pointer-events: none;
  border: var(--bw-hair) dashed var(--signal-orange);
  background: color-mix(in srgb, var(--signal-orange) 12%, transparent);
}

/* meshing progress bar — flat 3px hairline track flush along the viewport top edge */
#meshProgress {
  position: absolute; top: 0; left: 0; right: 0; height: 3px; z-index: 5;
  background: var(--rule-soft); opacity: 0; pointer-events: none;
  transition: opacity var(--dur-fast) linear;
}
#meshProgress.on { opacity: 1; }
#meshProgressFill {
  height: 100%; width: 0; background: var(--ink);
  transition: width var(--dur-fast) linear;
}

/* ------------------------------------------------------------ footer / status */

footer {
  padding: 6px var(--sp-4); border-top: var(--bw-hair) solid var(--rule);
  background: var(--paper); color: var(--ink-soft); font-size: var(--fs-14);
  min-height: 28px; flex: 0 0 auto;
  display: flex; align-items: center; gap: var(--sp-4);
}

#formula {
  flex: 1 1 auto; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  color: var(--ink-soft); cursor: pointer;
  transition: opacity var(--dur-fast) var(--ease);
}
#formula:hover { opacity: 0.55; color: var(--ink); }
#formula:empty { cursor: default; }

#stats {
  flex: 0 0 auto; text-align: right; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: var(--ls-label);
  font-variant-numeric: tabular-nums;
}

.status {
  color: var(--ink-soft); font-size: var(--fs-12); min-width: 84px; text-align: right;
  text-transform: uppercase; letter-spacing: var(--ls-label); font-variant-numeric: tabular-nums;
}
.status.err { color: var(--signal-red); }
.status.ok { color: var(--signal-green); }

/* ------------------------------------------------------------ create menu */

.hidden { display: none !important; }

.popup {
  position: fixed; z-index: 50; width: 224px; max-height: 340px;
  display: flex; flex-direction: column;
  background: var(--paper); border: var(--bw-hair) solid var(--ink);
  border-radius: var(--radius-0); box-shadow: var(--shadow-0);
  overflow: hidden;
}
.popup input { margin: var(--sp-2); }
#createList { overflow-y: auto; padding: 0 var(--sp-1) var(--sp-2); }
#createList .cat-label {
  font-size: var(--fs-12); text-transform: uppercase; letter-spacing: var(--ls-label);
  color: var(--ink-faint); padding: 8px 8px 3px;
  border-top: var(--bw-hair) solid var(--rule-soft); margin-top: 4px;
}
#createList .cat-label:first-child { border-top: none; margin-top: 0; }
#createList .create-item {
  padding: 5px 8px; border-radius: var(--radius-0); cursor: pointer;
  display: flex; align-items: center; gap: var(--sp-2); color: var(--ink);
  transition: opacity var(--dur-fast) var(--ease);
}
#createList .create-item:hover, #createList .create-item.active { background: var(--paper-2); }
#createList .create-item .dot { width: 8px; height: 8px; flex: 0 0 auto; }

/* ------------------------------------------------------------ modals */

#modalBackdrop {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(0,0,0,0.55); display: flex; align-items: center; justify-content: center;
}
.modal {
  background: var(--paper); border: var(--bw-hair) solid var(--ink);
  border-radius: var(--radius-0); padding: var(--sp-5); width: 360px;
  box-shadow: var(--shadow-0);
}
.modal h3 {
  margin: 0 0 var(--sp-4); font-size: var(--fs-14); font-weight: 700;
  text-transform: uppercase; letter-spacing: var(--ls-label);
}
.modal input[type="text"] { width: 100%; margin-bottom: var(--sp-4); padding: 8px 10px; }
.modal-actions { display: flex; justify-content: flex-end; gap: var(--sp-2); }

/* formula modal */
.modal-wide { width: 640px; max-width: 92vw; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-3); }
.modal-head h3 { margin: 0; }
#formulaPre {
  margin: 0 0 var(--sp-4); padding: var(--sp-3);
  border: var(--bw-hair) solid var(--rule); background: var(--paper-2);
  font-family: var(--font-mono); font-size: var(--fs-14); line-height: var(--lh-snug);
  color: var(--ink); white-space: pre; overflow: auto; max-height: 60vh;
}
#formulaPre .where {
  color: var(--ink-faint); text-transform: uppercase; letter-spacing: var(--ls-label);
}

.file-list { max-height: 300px; overflow-y: auto; margin-bottom: var(--sp-3);
  border-top: var(--bw-hair) solid var(--rule); }
.file-list .file-row {
  display: flex; align-items: center; gap: var(--sp-2);
  padding: 10px 8px; border-bottom: var(--bw-hair) solid var(--rule);
  cursor: pointer; transition: opacity var(--dur-fast) var(--ease);
}
.file-list .file-row:hover { background: var(--paper-2); }
.file-row .fname { font-weight: 700; flex: 1; color: var(--ink); }
.file-row .fmeta {
  color: var(--ink-faint); font-size: var(--fs-12);
  text-transform: uppercase; letter-spacing: var(--ls-label);
}
.file-row .fdel {
  padding: 0 6px; font-size: 15px; border: var(--bw-hair) solid transparent;
  background: transparent; color: var(--ink-faint);
}
.file-row .fdel:hover { color: var(--signal-red); opacity: 1; }
.file-list .empty {
  color: var(--ink-faint); text-align: center; padding: var(--sp-6);
  text-transform: uppercase; letter-spacing: var(--ls-label); font-size: var(--fs-12);
}

/* ------------------------------------------------------------ variable autocomplete */

.ac-pop {
  position: fixed; z-index: 70; min-width: 120px; max-height: 200px; overflow-y: auto;
  background: var(--paper); border: var(--bw-hair) solid var(--ink);
  border-radius: var(--radius-0); box-shadow: var(--shadow-0);
  font-family: var(--font-mono); font-size: var(--fs-14);
}
.ac-pop .ac-row {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-3);
  padding: 4px 8px; cursor: pointer;
}
.ac-pop .ac-row.active { background: var(--paper-2); }
.ac-pop .ac-name { font-weight: 700; color: var(--ink); }
.ac-pop .ac-val { color: var(--ink-faint); font-variant-numeric: tabular-nums; }