/* Layout: top bar + single column; case screen = brief, bench (analyzer), answer, result. dybyskz palette (ADR-0010). */
:root {
  --bg: #ffffff; --panel: #f4f6f9; --line: #e4e7ec; --ink: #111215; --muted: #5b6470;
  --accent: #2563eb; --accent-dark: #1d4ed8; --on-ink: #ffffff; --info-bg: #eff4ff;
  --ok: #156a33; --ok-bg: #e8f5ec; --warn: #9a3412; --warn-bg: #fdf4e3; --bad: #a32118; --bad-bg: #fcedec;
  --cta: #111215; --cta-ink: #ffffff; --gold: #b7791f;
  --scr-bg: #0d1117; --scr-grid: #222b36; --scr-text: #8b98a8; --scr-ink: #e6edf3;
  --tr-live: #ff5f56; --tr-1: #58a6ff; --tr-2: #3fb950; --tr-3: #d29922; --tr-4: #bc8cff; --tr-coh: #3fb950; --tr-ir: #f0b72f;
  --scene-bg: #f4f6f9; --scene-ink: #111215; --scene-muted: #9aa3ae; --scene-table: #c9cfd8;
  --f-display: "Space Mono", "IBM Plex Mono", Menlo, monospace;
  --f-body: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", Menlo, Consolas, monospace;
  --r: 12px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101114; --panel: #17181c; --line: #2a2c32; --ink: #fcfbf7; --muted: #9aa0ac;
    --accent: #3b82f6; --accent-dark: #60a5fa; --on-ink: #101114; --info-bg: #142036;
    --ok: #3dbe6b; --ok-bg: #11291a; --warn: #e8a05a; --warn-bg: #2e2112; --bad: #f0705f; --bad-bg: #331512;
    --cta: #fcfbf7; --cta-ink: #101114; --gold: #e3b341;
    --scene-bg: #17181c; --scene-ink: #fcfbf7; --scene-muted: #5b6470; --scene-table: #2f333b;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #101114; --panel: #17181c; --line: #2a2c32; --ink: #fcfbf7; --muted: #9aa0ac;
  --accent: #3b82f6; --accent-dark: #60a5fa; --on-ink: #101114; --info-bg: #142036;
  --ok: #3dbe6b; --ok-bg: #11291a; --warn: #e8a05a; --warn-bg: #2e2112; --bad: #f0705f; --bad-bg: #331512;
  --cta: #fcfbf7; --cta-ink: #101114; --gold: #e3b341;
  --scene-bg: #17181c; --scene-ink: #fcfbf7; --scene-muted: #5b6470; --scene-table: #2f333b;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 16px; line-height: 1.55;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.wrap { max-width: 1040px; margin: 0 auto; }
header.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--bg); border-bottom: 1px solid var(--line); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--bg); }
.topin { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding-block: 10px; }
.logo { font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; }
.logo span { color: var(--accent-dark); }
nav.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
nav.tabs a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-weight: 500; font-size: 0.94rem; }
nav.tabs a.on { color: var(--ink); background: var(--panel); }
.rank { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--muted); }
.rank b { color: var(--ink); }
.xpbar { width: 110px; height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; }
.xpbar i { display: block; height: 100%; background: var(--accent); }
main { padding-block: 22px 70px; }
h1, h2, h3 { text-wrap: balance; line-height: 1.2; }
h1 { font-family: var(--f-display); font-size: clamp(1.7rem, 4.4vw, 2.7rem); letter-spacing: -0.03em; margin: 8px 0 10px; }
h2 { font-size: 1.25rem; margin: 30px 0 10px; }
h3.sub { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 18px 0 6px; font-weight: 600; }
p { max-width: 68ch; }
.lede { color: var(--muted); font-size: 1.08rem; max-width: 60ch; }
.btn { text-decoration: none; display: inline-block; font: inherit; font-size: 0.92rem; padding: 8px 14px; border-radius: 9px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.cta { background: var(--cta); color: var(--cta-ink); border-color: var(--cta); font-weight: 600; }
.btn.measure { border-color: var(--accent); color: var(--accent-dark); }
.btn.primary { border-color: var(--accent); color: var(--accent-dark); font-weight: 600; }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent-dark); outline-offset: 2px; }
.btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.card { display: grid; gap: 6px; align-content: start; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 14px; color: var(--ink); text-decoration: none; min-width: 0; }
a.card:hover, button.card:hover { border-color: var(--accent); }
button.card { font: inherit; text-align: left; cursor: pointer; }
.card .t { font-weight: 600; line-height: 1.3; }
.card .m { color: var(--muted); font-size: 0.85rem; }
.card.locked { opacity: 0.55; cursor: not-allowed; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; padding: 2px 7px; border-radius: 5px; background: var(--bg); border: 1px solid var(--line); color: var(--muted); }
.chip.easy { color: var(--ok); border-color: var(--ok); }
.chip.medium { color: var(--warn); border-color: var(--warn); }
.chip.hard { color: var(--bad); border-color: var(--bad); }
.stars { color: var(--gold); letter-spacing: 2px; font-size: 0.95rem; }
.stars .off { color: var(--line); }
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 24px; align-items: center; }
@media (max-width: 760px) { .hero { grid-template-columns: minmax(0, 1fr); } }
.hero canvas { width: 100%; border-radius: var(--r); }
/* case screen */
.casehead { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: flex-start; }
.clock { font-family: var(--f-mono); font-size: 0.9rem; background: var(--panel); border: 1px solid var(--line); border-radius: 9px; padding: 6px 10px; white-space: nowrap; }
.clock.over { color: var(--bad); border-color: var(--bad); }
.venue { font-family: var(--f-mono); font-size: 0.82rem; color: var(--accent-dark); margin-top: 6px; }
.brief, .item { max-width: 72ch; margin: 8px 0; }
.goal { background: var(--info-bg); border-radius: 10px; padding: 10px 14px; margin: 12px 0; max-width: 76ch; }
.note { font-size: 0.88rem; color: var(--muted); margin: 8px 0; max-width: 76ch; }
.find { font-family: var(--f-mono); font-size: 0.85rem; margin: 6px 0; }
canvas.cv { display: block; width: 100%; max-width: 100%; border-radius: 10px; margin: 10px 0; touch-action: manipulation; }
.controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px 18px; margin: 8px 0; }
.ctl { display: grid; gap: 3px; min-width: 0; }
.ctl label { display: flex; justify-content: space-between; gap: 8px; font-size: 0.85rem; color: var(--muted); }
.ctl output, .ctl .unit { font-family: var(--f-mono); color: var(--ink); }
.ctl input[type="range"] { width: 100%; accent-color: var(--accent); }
.ctl input[type="number"], .txt { font: inherit; font-family: var(--f-mono); padding: 7px 9px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); width: 100%; }
.lbl { display: block; font-size: 0.85rem; color: var(--muted); margin-top: 8px; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0; }
.segbtn, .choice { font: inherit; font-size: 0.92rem; padding: 7px 12px; border-radius: 9px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; text-align: left; }
.segbtn.on, .choice.on { border-color: var(--accent-dark); background: var(--info-bg); font-weight: 600; }
.choices { display: grid; gap: 8px; margin: 12px 0; max-width: 760px; }
.readout { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 8px; margin: 10px 0; }
.ro { background: var(--panel); border-radius: 8px; padding: 7px 10px; min-width: 0; }
.ro .k { font-size: 0.76rem; color: var(--muted); }
.ro .v { font-family: var(--f-mono); overflow-wrap: anywhere; }
.footer { position: sticky; bottom: 0; background: var(--bg); border-top: 1px solid var(--line); padding-block: 10px calc(10px + env(safe-area-inset-bottom, 0px)); margin-top: 22px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.result { border: 1px solid var(--line); border-radius: var(--r); padding: 16px; margin: 18px 0; background: var(--panel); }
.result.pass { border-color: var(--ok); }
.result.fail { border-color: var(--bad); }
.result .big { font-family: var(--f-display); font-size: 1.6rem; }
.result .ref { font-size: 0.85rem; color: var(--muted); margin-top: 8px; }
.stat { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.stat .card .v { font-family: var(--f-display); font-size: 1.5rem; }
.empty { color: var(--muted); }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }