:root {
  color-scheme: dark;
  --ink: #07131c;
  --panel: #0c1b27;
  --panel-2: #102333;
  --line: rgba(176, 210, 220, 0.16);
  --text: #e7f2f4;
  --muted: #8ea6b2;
  --accent: #79e2ff;
  --ok: #9be7a8;
  --bad: #ffb4a2;
  --paper: #f4efe6;
  --paper-ink: #1b2832;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  font-family: "IBM Plex Sans", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--ink); color: var(--text); }

button, .file, .ghost {
  font: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 0.95rem;
  cursor: pointer;
}
button:hover, .file:hover { border-color: rgba(121, 226, 255, 0.55); }
button:disabled { opacity: 0.45; cursor: wait; }
.file input { display: none; }
.file { display: inline-flex; align-items: center; }

.app {
  height: 100vh;
  min-height: 640px;
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) 360px;
  grid-template-rows: 68px minmax(0, 1fr) 168px;
  background:
    radial-gradient(circle at 18% -10%, rgba(121, 226, 255, 0.14), transparent 32%),
    var(--ink);
}

.topbar { grid-column: 1 / -1; display: flex; align-items: center; gap: 1.2rem; padding: 0 1rem; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 0.75rem; min-width: 190px; }
.brand strong { display: block; font-size: 1.05rem; letter-spacing: -0.03em; }
.brand span { color: var(--muted); font-size: 0.78rem; letter-spacing: 0.14em; }
.mark { width: 22px; height: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 3px; }
.mark i { display: block; background: var(--text); }
.mark i:nth-child(4) { background: var(--accent); }
.file-meta { flex: 1; margin: 0; color: var(--muted); font-size: 0.92rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.actions { display: flex; align-items: center; gap: 0.5rem; }
.pill { color: var(--accent); font-size: 0.82rem; }

.rail, .sheet-pane, .dock { min-height: 0; background: rgba(12, 27, 39, 0.92); }
.rail, .sheet-pane { border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.sheet-pane { border-right: 0; border-left: 1px solid var(--line); }
.rail-head, .dock-label { display: flex; justify-content: space-between; align-items: center; padding: 0.9rem 1rem 0.4rem; }
h2 { margin: 0; font-size: 0.78rem; letter-spacing: 0.16em; font-weight: 500; color: var(--muted); }
.rail-head span, .eyebrow { color: var(--muted); font-family: "IBM Plex Mono", monospace; font-size: 0.75rem; }

.part-filters { display: flex; flex-wrap: wrap; gap: 0.35rem; padding: 0 0.85rem 0.35rem; }
.chip { border-radius: 999px; padding: 0.28rem 0.62rem; font-size: 0.75rem; background: transparent; }
.chip.active { border-color: rgba(121, 226, 255, 0.7); color: var(--accent); }
.parts, .schemes, .sheets, #library-list { margin: 0; padding: 0.4rem; list-style: none; overflow: auto; }
.parts { display: flex; flex-direction: column; gap: 0.45rem; padding: 0.45rem 0.75rem 0.9rem; }
.part {
  width: 100%;
  text-align: left;
  border-radius: 8px;
  padding: 0.85rem 0.9rem;
  background: rgba(16, 35, 51, 0.82);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.22);
  display: grid;
  grid-template-columns: 12px 1fr auto;
  gap: 0.22rem 0.7rem;
  align-items: center;
}
.part.active { border-color: rgba(121, 226, 255, 0.55); background: rgba(121, 226, 255, 0.08); }
.part.bad { border-color: rgba(255, 122, 102, 0.55); }
.swatch { width: 10px; height: 10px; border-radius: 2px; grid-row: span 2; }
.part b, .part small { grid-column: 2; }
.part b { font-weight: 550; }
.part small { color: var(--muted); }
.part .state { width: 8px; height: 8px; border-radius: 50%; grid-column: 3; grid-row: 1; align-self: center; background: transparent; }
.part .state.ok { background: var(--ok); }
.part .state.warn { background: #f0cf86; }
.part .state.bad { background: #ff7a66; }
.part .reason { grid-column: 2 / -1; color: #ffb4a2; line-height: 1.35; }

.stage { position: relative; min-width: 0; min-height: 0; }
#viewport { position: absolute; inset: 0; }
#viewport canvas { display: block; }
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 42%, transparent 42%, rgba(0, 0, 0, 0.35) 100%);
}
.stage-caption, .status, .dropmask { position: absolute; z-index: 2; pointer-events: none; }
.view-tools { position: absolute; z-index: 3; top: 0.85rem; right: 0.85rem; display: flex; gap: 0.4rem; }
.view-tools button { pointer-events: auto; background: rgba(12, 27, 39, 0.88); box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28); }
.view-tools button.active { border-color: var(--accent); color: var(--accent); background: rgba(121, 226, 255, 0.12); }
.quote {
  position: absolute;
  z-index: 3;
  right: 0.85rem;
  bottom: 0.85rem;
  width: 228px;
  padding: 0.75rem 0.85rem 0.85rem;
  border-radius: 8px;
  background: rgba(12, 27, 39, 0.92);
  border: 1px solid var(--line);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
  pointer-events: none;
}
.quote h3 { margin: 0 0 0.45rem; font-size: 0.72rem; letter-spacing: 0.14em; color: var(--muted); font-weight: 500; }
.quote-row { display: flex; justify-content: space-between; gap: 0.6rem; margin-top: 0.28rem; font-size: 0.8rem; color: var(--muted); }
.quote-row b { color: var(--text); font-weight: 550; }
.quote-row.ops { margin-top: 0.5rem; padding-top: 0.4rem; border-top: 1px solid var(--line, rgba(255,255,255,0.08)); }
.ops-detail { display: block; margin-top: 0.15rem; font-size: 0.72rem; color: var(--muted); text-align: right; }
.quote .bar { display: flex; height: 8px; margin: 0.65rem 0 0.15rem; border-radius: 99px; overflow: hidden; background: rgba(255, 255, 255, 0.06); }
.quote .bar i { display: block; height: 100%; }
.quote .bar .cut { background: #79e2ff; }
.quote .bar .bend { background: #7aa2ff; }
.quote .bar .weld { background: #f0cf86; }
.quote .bar .setup { background: #8ea6b2; }
.quote .total { margin-top: 0.45rem; padding-top: 0.4rem; border-top: 1px solid var(--line); }
.quote .total b { font-family: "IBM Plex Mono", monospace; font-size: 1.05rem; }
.quote .warn { margin: 0.55rem 0 0; color: #ffb4a2; font-size: 0.75rem; line-height: 1.4; }
.corner-switch { display: flex; gap: 0.35rem; margin: 0 0 0.35rem; }
.corner-switch button { pointer-events: auto; }
.corner-note { margin: 0 0 0.55rem; color: var(--muted); font-size: 0.72rem; line-height: 1.45; }
.stage-caption { left: 1rem; bottom: 0.9rem; margin: 0; color: var(--muted); font-size: 0.85rem; }
.status { left: 1rem; top: 1rem; margin: 0; padding: 0.45rem 0.7rem; border-radius: 999px; background: rgba(7, 19, 28, 0.8); color: var(--accent); }
.dropmask {
  position: fixed;
  inset: 16px;
  z-index: 30;
  display: grid;
  place-items: center;
  border: 1px dashed var(--accent);
  border-radius: 18px;
  background: rgba(7, 19, 28, 0.55);
  color: var(--accent);
  font-size: 1.05rem;
}
.dropmask[hidden] { display: none !important; }

.sheet-pane {
  background: #141414;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04), inset 0 18px 48px rgba(0, 0, 0, 0.45);
}
.sheet-note { padding: 0 1rem 0.4rem; color: #9aa0a6; font-size: 0.86rem; min-height: 1.2em; }
.sheets { display: flex; flex-direction: column; gap: 0.8rem; padding: 0 0.8rem 1rem; flex: 1; min-height: 0; }
.drawing {
  background: #1e1e1e;
  color: #e8e8e8;
  border-radius: 8px;
  border: 1px solid rgba(0, 255, 255, 0.22);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}
.drawing svg {
  width: 100%;
  flex: 1;
  min-height: 280px;
  display: block;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    #1e1e1e;
  background-size: 22px 22px;
}
.drawing .outer-line {
  fill: rgba(255, 255, 255, 0.03);
  stroke: #ffffff;
  stroke-width: 1.6;
  vector-effect: non-scaling-stroke;
  stroke-linejoin: round;
}
.drawing .hole-line {
  fill: none;
  stroke: #ff4dff;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}
.drawing .bend-line {
  fill: none;
  stroke: #00e5ff;
  stroke-width: 2;
  stroke-dasharray: 10 5 2 5;
  vector-effect: non-scaling-stroke;
  stroke-linecap: round;
}
.drawing .bend-label,
.drawing .dim-label {
  fill: #d0d0d0;
  font-family: "IBM Plex Mono", Consolas, monospace;
}
.drawing .bend-label {
  fill: #7aefff;
  font-weight: 500;
  stroke: #1e1e1e;
  stroke-width: 0.22em;
  paint-order: stroke fill;
}
.drawing .dim-label { fill: #8d8d8d; }
.drawing .mark-label {
  fill: #f4f7fb;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-weight: 650;
  stroke: #10202c;
  stroke-width: 0.18em;
  paint-order: stroke fill;
}
.drawing figcaption {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.15rem 0.8rem;
  padding: 0.65rem 0.75rem 0.75rem;
  border-top: 1px solid rgba(0, 255, 255, 0.16);
  background: #181818;
  font-size: 0.82rem;
}
.drawing strong { font-family: "IBM Plex Mono", Consolas, monospace; font-weight: 500; color: #f2f2f2; }
.drawing em { font-style: normal; color: #9aa0a6; }
.drawing .legend { display: inline-flex; align-items: center; gap: 0.35rem; }
.legend-outer, .legend-bend, .legend-hole { width: 1.1rem; height: 0; border-top: 2px solid #ffffff; display: inline-block; }
.legend-bend { border-top: 2px dashed #00e5ff; }
.legend-hole { border-top-color: #ff4dff; }
.empty-sheet { margin: 0.6rem; color: var(--muted); line-height: 1.5; }

.dock { grid-column: 1 / -1; display: grid; grid-template-columns: 148px minmax(0, 1fr); border-top: 1px solid var(--line); }
.dock-label { flex-direction: column; align-items: flex-start; justify-content: center; gap: 0.55rem; }
.dock-label a { color: var(--ink); background: var(--accent); text-decoration: none; border-radius: 999px; padding: 0.4rem 0.75rem; font-size: 0.85rem; white-space: nowrap; }
.dock-label a + a { background: transparent; color: var(--accent); border: 1px solid rgba(121, 226, 255, 0.55); }
.schemes { display: flex; gap: 0.55rem; align-items: stretch; overflow-x: auto; }
.scheme {
  position: relative;
  min-width: 230px;
  text-align: left;
  border-radius: 8px;
  padding: 0.75rem 0.85rem;
  background: rgba(16, 35, 51, 0.92);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.scheme.active { border-color: rgba(121, 226, 255, 0.45); }
.scheme.active.is-feasible {
  border-color: #79e2ff;
  box-shadow: 0 0 0 1px #79e2ff, 0 0 16px rgba(121, 226, 255, 0.45), 0 8px 18px rgba(0, 0, 0, 0.28);
}
.scheme .check { position: absolute; top: 0.4rem; right: 0.5rem; color: var(--ok); font-style: normal; font-weight: 600; }
.scheme b, .scheme span, .scheme .reason { display: block; }
.scheme span { color: var(--muted); font-size: 0.8rem; margin-top: 0.2rem; }
.scheme .ok { color: var(--ok); }
.scheme .bad { color: var(--bad); }
.scheme .reason { color: #ffb4a2; font-size: 0.72rem; line-height: 1.35; margin-top: 0.4rem; }

dialog { border: 0; padding: 0; background: transparent; color: var(--text); }
dialog::backdrop { background: rgba(3, 8, 12, 0.72); }
.library-card { width: min(720px, calc(100vw - 2rem)); background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 1rem; box-shadow: var(--shadow); }
.library-card header { display: flex; justify-content: space-between; align-items: center; }
.library-card h2 { color: var(--text); font-size: 1.4rem; letter-spacing: -0.03em; }
.eyebrow { margin: 0; }
#library-filter { width: 100%; margin: 0.8rem 0; padding: 0.7rem 0.8rem; border-radius: 12px; border: 1px solid var(--line); background: var(--ink); color: var(--text); font: inherit; }
#library-list { max-height: 420px; display: flex; flex-direction: column; gap: 0.35rem; }
.library-row { display: grid; grid-template-columns: auto 1fr auto auto; gap: 0.7rem; align-items: center; padding: 0.65rem 0.4rem; border-bottom: 1px solid var(--line); }
.library-row b { font-weight: 500; }
.tag { font-family: "IBM Plex Mono", monospace; font-size: 0.72rem; letter-spacing: 0.08em; color: var(--accent); }

.user-chip[hidden] { display: none; }
.user-chip { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--muted); font-size: 0.82rem; }
.user-chip b { color: var(--text); font-weight: 500; }
.user-chip button { padding: 0.35rem 0.7rem; font-size: 0.78rem; }
.history-list { max-height: 460px; overflow: auto; display: flex; flex-direction: column; gap: 0.2rem; padding: 0; margin: 0.8rem 0 0; list-style: none; }
.history-row { display: grid; grid-template-columns: 1fr auto auto auto; gap: 0.7rem; align-items: center; padding: 0.6rem 0.4rem; border-bottom: 1px solid var(--line); }
.history-row small { color: var(--muted); }
.history-row .failed { color: var(--bad); }
.factory-card { width: min(980px, calc(100vw - 2rem)); max-height: calc(100vh - 3rem); display: flex; flex-direction: column; }
.factory-hint { color: var(--muted); font-size: 0.82rem; line-height: 1.5; margin: 0.4rem 0 0.8rem; }
.factory-list { overflow: auto; display: grid; gap: 0.8rem; padding-right: 0.2rem; }
.factory { border: 1px solid var(--line); border-radius: 14px; padding: 0.8rem; background: var(--panel-2); }
.factory-top { display: flex; gap: 0.6rem; align-items: center; margin-bottom: 0.6rem; }
.factory-top input[name="name"] { flex: 1; font-weight: 600; }
.factory-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.5rem 0.8rem; }
.factory label, .login-card label { display: flex; flex-direction: column; gap: 0.25rem; color: var(--muted); font-size: 0.76rem; }
.factory input, .factory select, .login-card input { font: inherit; color: var(--text); background: var(--ink); border: 1px solid var(--line); border-radius: 10px; padding: 0.45rem 0.6rem; }
.factory .check { flex-direction: row; align-items: center; gap: 0.4rem; color: var(--text); font-size: 0.85rem; }
.factory-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 0.9rem; }
.factory-error { color: var(--bad); font-size: 0.85rem; margin: 0.6rem 0 0; }
.login-card { width: min(380px, calc(100vw - 2rem)); display: flex; flex-direction: column; gap: 0.8rem; }

@media (max-width: 980px) {
  .app { height: auto; min-height: 100vh; grid-template-columns: 1fr; grid-template-rows: auto 280px 52vh 360px auto; }
  .topbar { flex-wrap: wrap; padding: 0.8rem; }
  .stage { min-height: 280px; }
  .rail, .sheet-pane { border: 0; border-top: 1px solid var(--line); }
  .dock { grid-template-columns: 1fr; }
  .schemes { overflow-x: auto; }
}

/* Review: does the cut list rebuild the model as designed? */
.review {
  position: absolute; z-index: 3; left: 0.85rem; top: 0.85rem; width: 268px; max-height: calc(100% - 5rem); overflow: auto;
  padding: 0.75rem 0.85rem 0.8rem; border-radius: 8px; background: rgba(12, 27, 39, 0.92);
  border: 1px solid var(--line); box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}
.review h3 { margin: 0 0 0.45rem; font-size: 0.72rem; letter-spacing: 0.14em; color: var(--muted); font-weight: 500; display: flex; justify-content: space-between; align-items: center; }
.review .verdict { font-size: 0.72rem; letter-spacing: 0.04em; padding: 0.1rem 0.45rem; border-radius: 99px; border: 1px solid currentColor; }
.review .verdict.pass { color: #7fe0a6; }
.review .verdict.cond { color: #f0cf86; }
.review .verdict.fail { color: #ff8f7a; }
.review .score { display: flex; align-items: baseline; gap: 0.35rem; margin: 0.1rem 0 0.35rem; }
.review .score b { font-family: "IBM Plex Mono", monospace; font-size: 1.6rem; color: var(--text); }
.review .score small { color: var(--muted); font-size: 0.72rem; }
.review .meters { display: grid; grid-template-columns: auto 1fr auto; gap: 0.2rem 0.5rem; align-items: center; font-size: 0.75rem; color: var(--muted); }
.review .meters i { display: block; height: 5px; border-radius: 99px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.review .meters i span { display: block; height: 100%; background: #79e2ff; }
.review .meters b { color: var(--text); font-weight: 550; font-family: "IBM Plex Mono", monospace; font-size: 0.72rem; }
.review .summary { margin: 0.55rem 0 0.35rem; font-size: 0.74rem; line-height: 1.45; color: var(--muted); }
.review ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.25rem; }
.review li button { width: 100%; text-align: left; padding: 0.35rem 0.45rem; border-radius: 6px; font-size: 0.72rem; line-height: 1.35;
  background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line); color: var(--text); cursor: pointer; }
.review li button:hover { border-color: var(--accent); }
.review li .tag { font-weight: 600; margin-right: 0.3rem; }
.review li .major { color: #ff8f7a; }
.review li .minor { color: #f0cf86; }
.review li .info { color: #8fc8ff; }
.review li small { display: block; color: var(--muted); }
.review .more { margin-top: 0.3rem; font-size: 0.7rem; color: var(--muted); }
.part .reason.review-flag { color: #ff8f7a; }
.review .gates { display: grid; gap: 0.3rem; margin: 0.2rem 0 0.45rem; }
.review .gate { display: grid; grid-template-columns: 1.1rem 1fr; column-gap: 0.3rem; font-size: 0.8rem; color: var(--text); }
.review .gate i { font-style: normal; font-weight: 700; }
.review .gate.ok i { color: #7fe0a6; }
.review .gate.bad i { color: #ff8f7a; }
.review .gate small { grid-column: 2; color: var(--muted); font-size: 0.72rem; line-height: 1.35; }
.review h4 { margin: 0.7rem 0 0.15rem; padding-top: 0.5rem; border-top: 1px solid var(--line); font-size: 0.68rem; letter-spacing: 0.14em; color: var(--muted); font-weight: 500; }
.review .indicators .quote-row { margin-top: 0.2rem; }
.review .internal { margin: 0.6rem 0 0; padding-top: 0.45rem; border-top: 1px dashed var(--line); font-size: 0.68rem; color: var(--muted); opacity: 0.8; }