/* demo-loop.css — CAD → FEA → CLAUDE → CAD iteration-loop demo.
   All rules scoped under #demo-loop. Technical-drawing aesthetic:
   hairlines, mono uppercase microlabels, no glow / no decorative radius. */

#demo-loop {
  font-family: var(--font-mono, "IBM Plex Mono", ui-monospace, monospace);
  color: var(--text, #e6e8ec);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---------- header ---------- */
#demo-loop .dl-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px solid var(--line-soft, rgba(159, 180, 200, .14));
  padding-bottom: 8px;
}
#demo-loop .dl-title {
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--dim, #8b93a0);
}
#demo-loop .dl-iterlbl {
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--redline, #c8371e);
  white-space: nowrap;
}

/* ---------- body grid ---------- */
#demo-loop .dl-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 236px;
  gap: 14px;
  align-items: stretch;
}
#demo-loop.dl-narrow .dl-body {
  grid-template-columns: minmax(0, 1fr);
}

/* ---------- stage ---------- */
#demo-loop .dl-stage {
  position: relative;
  border: 1px solid var(--line, rgba(159, 180, 200, .28));
  background: var(--panel-deep, #15181c);
  aspect-ratio: 21 / 20;
  max-height: 470px;
  min-height: 260px;
  overflow: hidden;
}
#demo-loop.dl-narrow .dl-stage {
  aspect-ratio: 10 / 9;
  max-height: 380px;
}
#demo-loop .dl-stage canvas {
  position: absolute;
  inset: 0;
  display: block;
}

/* ---------- side column ---------- */
#demo-loop .dl-side {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

/* loop diagram */
#demo-loop .dl-loopsvg {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line-soft, rgba(159, 180, 200, .14));
  background: var(--panel-deep, #15181c);
  padding: 6px 4px 2px;
  box-sizing: border-box;
}
#demo-loop .dl-node rect {
  fill: none;
  stroke: var(--line, rgba(159, 180, 200, .28));
  stroke-width: 1;
}
#demo-loop .dl-node text {
  fill: var(--dim, #8b93a0);
  font-family: inherit;
  font-size: 10px;
  letter-spacing: .1em;
}
#demo-loop .dl-node.on rect { stroke: var(--redline, #c8371e); }
#demo-loop .dl-node.on text { fill: var(--redline, #c8371e); }
#demo-loop .dl-leg path {
  stroke: var(--line, rgba(159, 180, 200, .28));
  stroke-width: 1;
}
#demo-loop .dl-leg polygon { fill: var(--line, rgba(159, 180, 200, .28)); }
#demo-loop .dl-leg.on path { stroke: var(--redline, #c8371e); }
#demo-loop .dl-leg.on polygon { fill: var(--redline, #c8371e); }
#demo-loop .dl-leg-return path { stroke-dasharray: 4 3; }
#demo-loop .dl-leg-return.wip path { stroke: var(--redline, #c8371e); }
#demo-loop .dl-leg-return.wip polygon { fill: var(--redline, #c8371e); }
#demo-loop .dl-retlbl {
  fill: var(--dim, #8b93a0);
  font-family: inherit;
  font-size: 8px;
  letter-spacing: .14em;
}
#demo-loop .dl-retlbl.wip { fill: var(--redline, #c8371e); }

/* phase microlabel */
#demo-loop .dl-phase {
  font-size: 9px;
  letter-spacing: .12em;
  color: var(--steel, #8a97a3);
  border-left: 2px solid var(--redline, #c8371e);
  padding: 2px 0 2px 8px;
  min-height: 22px;
}

/* readouts */
#demo-loop .dl-stats {
  border: 1px solid var(--line-soft, rgba(159, 180, 200, .14));
  background: var(--panel-deep, #15181c);
  padding: 2px 10px;
}
#demo-loop .dl-stat {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line-soft, rgba(159, 180, 200, .14));
}
#demo-loop .dl-stat:last-child { border-bottom: none; }
#demo-loop .dl-stat-l {
  flex: 1;
  font-size: 9px;
  letter-spacing: .12em;
  color: var(--dim, #8b93a0);
}
#demo-loop .dl-stat-v {
  font-size: 17px;
  font-weight: 500;
  color: var(--white, #f4f6f8);
  font-variant-numeric: tabular-nums;
}
#demo-loop .dl-stat-u {
  font-size: 9px;
  letter-spacing: .08em;
  color: var(--dim, #8b93a0);
}
#demo-loop .dl-stat-d {
  font-size: 10px;
  min-width: 44px;
  text-align: right;
  color: var(--dim, #8b93a0);
  font-variant-numeric: tabular-nums;
}
#demo-loop .dl-stat-d.dl-down { color: var(--steel, #8a97a3); }
#demo-loop .dl-stat-d.dl-up { color: var(--redline, #c8371e); }

/* AI proposal log */
#demo-loop .dl-ai {
  border: 1px solid var(--line-soft, rgba(159, 180, 200, .14));
  background: var(--panel-deep, #15181c);
  padding: 8px 10px;
  flex: 1;
  min-height: 86px;
  overflow: hidden;
}
#demo-loop .dl-ai-h {
  font-size: 9px;
  letter-spacing: .14em;
  color: var(--dim, #8b93a0);
  margin-bottom: 6px;
}
#demo-loop .dl-ai-m {
  font-size: 10px;
  line-height: 1.5;
  color: var(--steel, #8a97a3);
  margin-bottom: 5px;
  word-break: break-word;
}
#demo-loop .dl-ai-m:last-child {
  color: var(--text, #e6e8ec);
  margin-bottom: 0;
}
#demo-loop .dl-ai-m.dl-ai-final { color: var(--white, #f4f6f8); }
#demo-loop .dl-ai-p { color: var(--redline, #c8371e); }

/* ---------- controls ---------- */
#demo-loop .dl-ctrl {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid var(--line-soft, rgba(159, 180, 200, .14));
  padding-top: 12px;
}
#demo-loop .dl-btn {
  appearance: none;
  font-family: inherit;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--steel, #8a97a3);
  background: transparent;
  border: 1px solid var(--line, rgba(159, 180, 200, .28));
  border-radius: 2px;
  padding: 9px 16px;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
#demo-loop .dl-btn:hover:not(:disabled),
#demo-loop .dl-btn:focus-visible {
  color: var(--white, #f4f6f8);
  border-color: var(--steel, #8a97a3);
  outline: none;
}
#demo-loop .dl-btn:focus-visible {
  border-color: var(--redline, #c8371e);
}
#demo-loop .dl-btn-run {
  color: var(--redline, #c8371e);
  border-color: var(--redline, #c8371e);
}
#demo-loop .dl-btn-run:hover:not(:disabled),
#demo-loop .dl-btn-run:focus-visible {
  background: var(--redline, #c8371e);
  color: var(--white, #f4f6f8);
  border-color: var(--redline, #c8371e);
}
#demo-loop .dl-btn:disabled {
  opacity: .38;
  cursor: default;
}
#demo-loop .dl-note {
  margin-left: auto;
  font-size: 9px;
  letter-spacing: .1em;
  color: var(--dim, #8b93a0);
  text-align: right;
}
#demo-loop.dl-narrow .dl-note {
  flex-basis: 100%;
  margin-left: 0;
  text-align: left;
}