/* Layout: one narrow reading column; the tool breaks out to a wider stage. Drafting-table palette. */
@font-face { font-family: "Archivo"; font-weight: 700; font-display: swap; src: url("fonts/archivo-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Archivo"; font-weight: 800; font-display: swap; src: url("fonts/archivo-latin-800-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 400; font-display: swap; src: url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 600; font-display: swap; src: url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 500; font-display: swap; src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); }

:root {
  --bg: #f3f5f6;
  --panel: #ffffff;
  --ink: #15212b;
  --muted: #5a6873;
  --line: #d5dde2;
  --accent: #0b6a72;
  --tape: #f2c230;
  --p1: #0b7f89;
  --p2: #d4521c;
  --p3: #6a4fc0;
  --p4: #a37a00;
  --f-display: "Archivo", "Arial Narrow", system-ui, sans-serif;
  --f-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f161b; --panel: #172128; --ink: #e5ecf0; --muted: #96a6b0; --line: #2a3943;
    --accent: #4fc2cb; --tape: #e8b923; --p1: #3fc3cd; --p2: #ff8a57; --p3: #a98cff; --p4: #e2b53a;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f161b; --panel: #172128; --ink: #e5ecf0; --muted: #96a6b0; --line: #2a3943;
  --accent: #4fc2cb; --tape: #e8b923; --p1: #3fc3cd; --p2: #ff8a57; --p3: #a98cff; --p4: #e2b53a;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 1rem/1.6 var(--f-body);
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.12; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.75rem, 4.6vw, 2.6rem); font-weight: 800; }
h2 { font-size: clamp(1.25rem, 2.6vw, 1.6rem); font-weight: 700; }
h3 { font-size: 1.05rem; font-weight: 700; }
p, li { text-wrap: pretty; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap { max-width: 1040px; margin: 0 auto; }
.read { max-width: 40rem; }
.num, .mm, td.n { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }

/* header / footer */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--f-display); font-weight: 800; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand svg { width: 30px; height: 30px; }
.nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.95rem; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--ink); }
.foot { margin-top: 56px; border-top: 1px solid var(--line); padding-block: 24px 40px; color: var(--muted); font-size: 0.875rem; display: grid; gap: 10px; }
.foot nav { display: flex; gap: 16px; flex-wrap: wrap; }
.foot a { color: var(--muted); }

main { display: grid; gap: 40px; }
.hero { display: grid; gap: 10px; padding-top: 12px; }
.hero p { color: var(--muted); margin: 0; max-width: 34rem; font-size: 1.05rem; }
.eyebrow { font-family: var(--f-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }

/* tool */
.tool { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; display: grid; gap: 14px; padding: 14px; min-width: 0; }
.tool-pick { display: flex; flex-wrap: wrap; gap: 8px; }
.pick { display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 10px; padding: 4px 6px 4px 10px; background: var(--bg); min-width: 0; flex: 1 1 200px; max-width: 100%; }
.pick .sw, .legend .sw { width: 12px; height: 12px; border-radius: 3px; border: 2px solid var(--c); flex: none; }
.pick select { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--ink); font: 600 0.95rem var(--f-body); padding: 6px 2px; }
.pick .x { border: 0; background: none; color: var(--muted); font-size: 1.2rem; line-height: 1; padding: 4px 6px; cursor: pointer; border-radius: 6px; }
.pick .x:hover, .pick .rot:hover { color: var(--ink); background: var(--line); }
.pick .rot { border: 0; background: none; color: var(--muted); padding: 5px; cursor: pointer; border-radius: 6px; display: inline-flex; }
.pick .rot[aria-pressed="true"] { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }
.add { border: 1px dashed var(--line); background: none; color: var(--accent); font: 600 0.95rem var(--f-body); border-radius: 10px; padding: 8px 14px; cursor: pointer; }
.tool-ctrl { display: flex; flex-wrap: wrap; gap: 8px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.seg button { border: 0; background: transparent; color: var(--muted); font: 600 0.85rem var(--f-body); padding: 7px 12px; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--panel); }
.stage { overflow-x: auto; overscroll-behavior-x: contain; border-radius: 10px; background:
  linear-gradient(var(--bg), var(--bg)) padding-box; padding-block: 18px 10px; min-height: 120px; }
.stage-inner { display: grid; justify-items: center; gap: 6px; width: max-content; min-width: 100%; }
.draw { display: block; overflow: visible; }
.draw .lbl { font: 700 3.4px var(--f-body); }
.draw .lbl2 { font: 500 2.9px var(--f-mono); fill: var(--muted); }
.ruler { display: block; }
.ruler line { stroke: var(--muted); stroke-width: 0.18; }
.ruler text { font: 500 2.4px var(--f-mono); fill: var(--muted); }
.tool.is-true .ruler line { stroke: var(--ink); }
.stage-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.scale-note { font-size: 0.9rem; color: var(--muted); }
.scale-note b { color: var(--ink); }
.tool.is-true .scale-note b { color: var(--accent); }
.btn { border: 0; border-radius: 10px; background: var(--ink); color: var(--panel); font: 600 0.95rem var(--f-body); padding: 10px 16px; cursor: pointer; }
.btn.tape { background: var(--tape); color: #1d1a10; }
.legend { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.legend li { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 0.92rem; }
.legend .nm { font-weight: 600; }
.legend em { font-style: normal; font-size: 0.75rem; color: var(--accent); border: 1px solid var(--accent); border-radius: 99px; padding: 0 7px; margin-left: 4px; }
.legend .mm { color: var(--muted); font-size: 0.85rem; }
.legend .wt { font: 500 0.85rem var(--f-mono); color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 0 6px; font-variant-numeric: tabular-nums; }
.tool-mine { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 0.9rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 12px; }
.tool-mine select { border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: 8px; font: 500 0.9rem var(--f-body); padding: 6px 8px; max-width: 100%; }
.link { background: none; border: 0; color: var(--accent); font: 600 0.9rem var(--f-body); cursor: pointer; padding: 4px; text-decoration: underline; text-underline-offset: 2px; }
.drawnote { font-size: 0.8rem; color: var(--muted); margin: 0; }

/* content */
section.block { display: grid; gap: 14px; min-width: 0; }
.summary { font-size: 1.08rem; margin: 0; max-width: 40rem; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.fact { border-top: 3px solid var(--tape); background: var(--panel); padding: 10px 12px 12px; border-radius: 0 0 10px 10px; }
.fact .k { font-size: 0.8rem; color: var(--muted); }
.fact .v { font: 500 1.15rem var(--f-mono); }
.tbl { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
table { border-collapse: collapse; width: 100%; font-size: 0.93rem; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
thead th { font-size: 0.8rem; color: var(--muted); font-weight: 600; }
td.n { white-space: nowrap; }
.pos { color: var(--p2); }
.qa { display: grid; gap: 14px; max-width: 40rem; }
.qa h3 { margin-bottom: 4px; }
.qa p { margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.chips a { display: inline-block; border: 1px solid var(--line); background: var(--panel); border-radius: 99px; padding: 6px 12px; font-size: 0.9rem; text-decoration: none; color: var(--ink); }
.chips a:hover { border-color: var(--accent); }
.shop { display: flex; flex-wrap: wrap; gap: 10px; }
.shop a { display: inline-flex; align-items: center; gap: 8px; border-radius: 10px; padding: 10px 14px; background: var(--panel); border: 1px solid var(--line); text-decoration: none; color: var(--ink); font-weight: 600; font-size: 0.95rem; }
.shop a:hover { border-color: var(--accent); }
.disc { font-size: 0.8rem; color: var(--muted); margin: 0; }
.brandlist { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; }
.brandlist ul { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 4px; }
.prose { max-width: 40rem; display: grid; gap: 12px; }
.prose p, .prose ul { margin: 0; }
.crumbs { font-size: 0.85rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
.flag { font-size: 0.75rem; color: var(--muted); }

/* calibration dialog */
dialog#cal { border: 0; border-radius: 16px; padding: 0; background: var(--panel); color: var(--ink); width: min(760px, calc(100vw - 12px)); max-width: none; max-height: calc(100dvh - 16px); }
dialog#cal::backdrop { background: rgb(10 16 20 / 0.55); }
.cal-in { display: grid; gap: 14px; padding: 14px; }
@media (min-width: 640px) { .cal-in { padding: 22px; } }
.cal-in p { margin: 0; color: var(--muted); }
.card-zone { overflow-x: auto; padding-block: 8px; display: grid; justify-items: start; }
.card { border: 2px solid var(--ink); border-radius: 3.2mm; background: repeating-linear-gradient(135deg, transparent 0 10px, color-mix(in srgb, var(--tape) 22%, transparent) 10px 20px); position: relative; }
.card::after { content: "85.60 x 53.98 mm"; position: absolute; left: 10px; bottom: 8px; font: 500 0.75rem var(--f-mono); color: var(--muted); }
.cal-row { display: flex; align-items: center; gap: 10px; }
.cal-row input { flex: 1; min-width: 0; accent-color: var(--accent); }
.cal-row button { width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font-size: 1.2rem; cursor: pointer; }
.cal-act { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }
.ghost { background: none; border: 1px solid var(--line); color: var(--ink); border-radius: 10px; font: 600 0.95rem var(--f-body); padding: 10px 14px; cursor: pointer; }

@media (min-width: 760px) {
  .tool { padding: 18px; }
  .two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }
.brandlist .flag { white-space: nowrap; }
@media (max-width: 480px) { .pick, .add { flex-basis: 100%; } }