@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 100 1000;
  font-display: block;
  src: url(assets/fonts/dmsans-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 100 1000;
  font-display: block;
  src: url(assets/fonts/dmsans-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Chinese for safety signs: subsets holding only the glyphs those signs use. */
@font-face {
  font-family: 'Spkm Safety TC';
  font-weight: 100 900;
  font-display: block;
  src: url(assets/fonts/noto-sans-tc-safety.woff2) format('woff2');
}
@font-face {
  font-family: 'Spkm Safety SC';
  font-weight: 100 900;
  font-display: block;
  src: url(assets/fonts/noto-sans-sc-safety.woff2) format('woff2');
}

[hidden] { display: none !important; }

:root {
  --black: #23272D;
  --yellow: #F1FE06;
  --deep-gray: #5D6166;
  --dark-gray: #8B8F94;
  --gray: #E8E9EB;
  --white: #FFFFFF;
  --panel-w: 380px;
  --gutter: 24px;
  color-scheme: dark;
}

* { box-sizing: border-box; border-radius: 0 !important; }

html, body {
  margin: 0;
  background: var(--black);
  color: var(--gray);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea { font: inherit; color: inherit; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 56px;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--deep-gray);
}
.topbar-left { display: flex; align-items: center; gap: 16px; min-width: 0; }
.topbar-logo { height: 14px; width: auto; aspect-ratio: 579 / 61; color: var(--gray); flex: none; }
.topbar-title {
  color: var(--white);
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 12px;
  padding-left: 16px;
  border-left: 1px solid var(--deep-gray);
  line-height: 24px;
}
.serial {
  color: var(--dark-gray);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--panel-w) 1fr;
  min-height: calc(100vh - 56px);
}

.panel {
  border-right: 1px solid var(--deep-gray);
  overflow-y: auto;
  max-height: calc(100vh - 56px);
}

.block {
  padding: 20px var(--gutter) 24px;
  border-bottom: 1px solid var(--deep-gray);
}
.block-head {
  margin: 0 0 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--white);
}
.block-head span { color: var(--dark-gray); margin-right: 8px; }

.field { display: block; margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }
.field-label {
  display: block;
  margin-bottom: 6px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--dark-gray);
}
.field-label em { font-style: normal; color: var(--deep-gray); margin-left: 6px; }

input[type="text"], input[type="number"], select, textarea {
  display: block;
  width: 100%;
  background: var(--black);
  border: 1px solid var(--deep-gray);
  padding: 9px 10px;
  color: var(--gray);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
textarea { resize: vertical; min-height: 40px; }
select {
  background-image: linear-gradient(45deg, transparent 50%, var(--dark-gray) 50%), linear-gradient(-45deg, transparent 50%, var(--dark-gray) 50%);
  background-position: calc(100% - 15px) 50%, calc(100% - 10px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 28px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
}
input:focus, select:focus, textarea:focus { border-color: var(--yellow); }
input[aria-invalid="true"] { border-color: var(--gray); border-style: dashed; }
.field-error { display: block; margin-top: 6px; font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; color: var(--gray); }
.field-error:empty { display: none; }
.field-error::before { content: 'CHECK'; color: var(--black); background: var(--yellow); padding: 1px 6px; margin-right: 8px; font-weight: 700; }
input::placeholder, textarea::placeholder { color: var(--deep-gray); }
.caps { text-transform: uppercase; }
.caps::placeholder { text-transform: uppercase; }
input[type="number"]::-webkit-inner-spin-button { opacity: 0.4; }

.row { display: flex; gap: 10px; margin-bottom: 14px; }
.row:last-child { margin-bottom: 0; }
.row > .field { flex: 1; margin-bottom: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 16px;
  background: var(--black);
  border: 1px solid var(--deep-gray);
  color: var(--gray);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { border-color: var(--gray); color: var(--white); }
.btn:focus-visible, .seg button:focus-visible, .preset:focus-visible { outline: 1px solid var(--yellow); outline-offset: 1px; }
.btn.primary { background: var(--yellow); border-color: var(--yellow); color: var(--black); }
.btn.primary:hover { background: var(--white); border-color: var(--white); color: var(--black); }
.btn.ghost { color: var(--dark-gray); }
.btn.full { width: 100%; margin-top: 8px; }
.btn.flash { border-color: var(--yellow); color: var(--yellow); }

.seg { display: flex; flex: 1; border: 1px solid var(--deep-gray); }
.seg button {
  flex: 1;
  min-height: 36px;
  padding: 0 8px;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--deep-gray);
  color: var(--dark-gray);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
}
.seg button:first-child { border-left: 0; }
.seg button:hover { color: var(--white); }
.seg button[aria-pressed="true"] { background: var(--gray); color: var(--black); }

/* ---------- Presets ---------- */
.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--deep-gray);
  border-left: 1px solid var(--deep-gray);
}
.preset {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 10px 12px;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--deep-gray);
  border-bottom: 1px solid var(--deep-gray);
  text-align: left;
  cursor: pointer;
}
.preset b { font-size: 11.5px; font-weight: 700; letter-spacing: 0.08em; color: var(--gray); }
.preset small { font-size: 10px; font-weight: 600; letter-spacing: 0.08em; color: var(--dark-gray); }
.preset:hover b { color: var(--white); }
.preset[aria-pressed="true"] { background: var(--gray); }
.preset[aria-pressed="true"] b, .preset[aria-pressed="true"] small { color: var(--black); }

.sub-head {
  margin: 20px 0 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--white);
}
.sub-head em { font-style: normal; color: var(--dark-gray); margin-left: 8px; }
.preset .swatch { display: inline-block; width: 8px; height: 8px; margin-right: 8px; vertical-align: 1px; }
.locked-note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--deep-gray);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--dark-gray);
}

/* ---------- Spec rows ---------- */
.specs { display: grid; gap: 6px; }
.spec {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr) 36px 36px;
  gap: 0;
}
.spec input { border-right-width: 0; }
.spec .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--deep-gray);
  border-right-width: 0;
  color: var(--dark-gray);
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}
.spec .icon:last-child { border-right-width: 1px; }
.spec .icon:hover { color: var(--white); }
.spec .icon.crit[aria-pressed="true"] { background: var(--yellow); color: var(--black); border-color: var(--yellow); }

.locked-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--dark-gray);
}
.locked-list li { padding: 6px 0; border-top: 1px solid var(--deep-gray); }
.locked-list li:first-child { border-top: 0; padding-top: 0; }
.locked-list li::before { content: '■'; color: var(--yellow); margin-right: 10px; font-size: 7px; vertical-align: 2px; }

/* ---------- Stage ---------- */
.stage {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: calc(100vh - 56px);
}

.telemetry {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--deep-gray);
}
.tm { padding: 14px var(--gutter); border-left: 1px solid var(--deep-gray); min-width: 0; }
.tm:first-child { border-left: 0; }
.tm-k { display: block; font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; color: var(--dark-gray); }
.tm-v {
  display: block;
  margin-top: 4px;
  font-size: clamp(14px, 1.35vw, 18px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tm-v.ok { color: var(--yellow); }
.tm-v.warn { color: var(--gray); }

.canvas {
  flex: 1;
  min-height: 320px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 40px 40px 72px;
  overflow: hidden;
}
.sheet { position: relative; }
.label { width: 100%; height: 100%; outline: 1px solid var(--deep-gray); }
.label svg { display: block; width: 100%; height: 100%; }

/* CAD-style dimension lines */
.dim { position: absolute; color: var(--dark-gray); font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; }
.dim-x { left: 0; right: 0; top: -24px; height: 9px; border-left: 1px solid var(--deep-gray); border-right: 1px solid var(--deep-gray); }
.dim-x::before { content: ''; position: absolute; left: 0; right: 0; top: 4px; border-top: 1px solid var(--deep-gray); }
.dim-x span { position: absolute; left: 50%; top: -6px; transform: translateX(-50%); background: var(--black); padding: 0 8px; white-space: nowrap; }
.dim-y { top: 0; bottom: 0; left: -24px; width: 9px; border-top: 1px solid var(--deep-gray); border-bottom: 1px solid var(--deep-gray); }
.dim-y::before { content: ''; position: absolute; top: 0; bottom: 0; left: 4px; border-left: 1px solid var(--deep-gray); }
.dim-y span { position: absolute; top: 50%; left: 4px; transform: translate(-50%, -50%) rotate(-90deg); background: var(--black); padding: 0 8px; white-space: nowrap; }

.notes { padding: 0 var(--gutter); }
.notes:empty { display: none; }
.note {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px solid var(--deep-gray);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gray);
}
.note::before { content: 'NOTE'; color: var(--black); background: var(--yellow); padding: 1px 6px; font-weight: 700; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px var(--gutter);
  border-top: 1px solid var(--deep-gray);
}

#print-root { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  :root { --gutter: 16px; }
  .layout { grid-template-columns: 1fr; }
  .panel { max-height: none; border-right: 0; order: 2; }
  .stage { height: auto; order: 1; border-bottom: 1px solid var(--deep-gray); }
  .canvas { height: 56vh; min-height: 260px; padding: 48px 20px 24px 52px; }
  .telemetry { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tm:nth-child(3) { border-left: 0; }
  .tm:nth-child(n+3) { border-top: 1px solid var(--deep-gray); }
  .tm-v { font-size: 15px; }
  .actions .btn { flex: 1 1 calc(50% - 5px); }
  .serial { display: none; }
}

/* ---------- Print: only the label, at true size ---------- */
@media print {
  html, body { background: transparent; }
  body > *:not(#print-root) { display: none !important; }
  #print-root { display: block; }
  #print-root svg { display: block; }
}