/* styles.css — Edition 012. Same design system as 001–011: dark board, steel-blue accent. */
:root {
  --bg: #0b0d10; --panel: #14181d; --panel-2: #171c22; --border: #232a31; --border-2: #2c343c;
  --ink: #e8ecef; --muted: #9aa6b2; --accent: #5db8e8; --accent-ink: #0b0d10;
  --pass: #35c07f; --pass-bg: #0f2019; --pass-bd: #1c3b2c;
  --hold: #ff5d5d; --hold-bg: #241115; --hold-bd: #47222a;
  --radius: 6px; --maxw: 1060px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: radial-gradient(1100px 640px at 50% -14%, #191f26 0%, var(--bg) 58%), var(--bg);
  color: var(--ink); font: 15.5px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
a { color: var(--accent); }

header { padding: 24px 0 4px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; text-decoration: none; color: var(--ink); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px var(--accent); }
.home { color: var(--muted); font-size: 13.5px; text-decoration: none; } .home:hover { color: var(--ink); }

.kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; letter-spacing: .15em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--border-2); background: var(--panel); padding: 6px 12px; border-radius: 3px; margin: 26px 0 16px; }
h1 { font-size: clamp(26px, 4.6vw, 39px); line-height: 1.08; margin: 0 0 12px; letter-spacing: -.02em; font-weight: 700; text-wrap: balance; }
h1 .hl { color: var(--accent); }
.lede { color: var(--muted); font-size: 16.5px; max-width: 72ch; margin: 0 0 14px; } .lede strong, .lede b { color: var(--ink); }
.note { font-size: 13.5px; color: var(--muted); border: 1px solid var(--border); background: var(--panel); border-radius: 12px;
  padding: 12px 15px; max-width: 78ch; } .note b { color: var(--ink); }
.chips-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; }
.chip-meta { font-size: 12.5px; color: var(--muted); border: 1px solid var(--border); background: var(--panel); border-radius: 8px; padding: 5px 10px; }
.chip-meta.synthetic { color: var(--accent); border-color: #1e3d52; }

details.terms { margin: 14px 0 0; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); }
details.terms summary { cursor: pointer; padding: 11px 15px; font-size: 13px; color: var(--muted); font-weight: 600; }
details.terms .body { padding: 2px 15px 13px; font-size: 13px; color: var(--muted); }
details.terms dt { color: var(--ink); font-weight: 600; margin-top: 8px; } details.terms dd { margin: 2px 0 0; }

footer { margin: 30px 0 34px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--muted); }
footer p { margin: 0 0 8px; max-width: 90ch; } footer b { color: var(--muted); }

#selftest[hidden] { display: none; }
.why { margin: 22px 0 4px; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
@media (max-width: 830px) { .why { grid-template-columns: 1fr; } }
.wcard { border: 1px solid var(--border); border-radius: 13px; background: linear-gradient(180deg, var(--panel-2), var(--panel)); padding: 15px 16px; }
.wcard h3 { font-size: 14px; margin: 0 0 7px; } .wcard h3 .n { color: var(--accent); font-family: var(--mono); margin-right: 6px; }
.wcard p { margin: 0; font-size: 12.5px; color: var(--muted); line-height: 1.55; } .wcard b { color: var(--ink); }
.wcard code { font-family: var(--mono); font-size: 11.5px; background: #0b0e13; border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; }

/* ---------- case chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; }
.chip { cursor: pointer; font: 600 13px/1 inherit; font-family: inherit; color: var(--ink); background: #0f1319;
  border: 1px solid var(--border-2); border-radius: 3px; padding: 10px 14px;
  transition: border-color .12s ease, background .12s ease, transform .06s ease; }
.chip b { font-family: var(--mono); color: var(--muted); margin-right: 5px; font-size: 11px; }
.chip:hover { border-color: #3a444e; } .chip:active { transform: translateY(1px); }
.chip.on { border-color: var(--accent); background: #0b1a26; } .chip.on b { color: var(--accent); }
.chip.used::after { content: "✓"; color: var(--pass); margin-left: 7px; font-size: 11px; }

/* ---------- the case bench ---------- */
.bench { margin: 14px 0 4px; border: 1px solid var(--border); border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel-2), var(--panel)); padding: 18px; }
.bench h2 { font-size: 19px; margin: 0 0 9px; letter-spacing: -.01em; }
.bench h2 .n { font-family: var(--mono); color: var(--accent); font-size: 14px; margin-right: 9px; }
.claim { font-size: 13px; color: var(--muted); margin: 0 0 9px; } .claim b { color: var(--ink); }
.story { font-size: 13.5px; color: var(--muted); line-height: 1.6; margin: 0 0 16px; max-width: 84ch; }
.story b { color: var(--ink); }
.story code, .claim code { font-family: var(--mono); font-size: 11.5px; background: #0b0e13;
  border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; color: var(--ink); }

/* the two locks, side by side */
.locks { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
@media (max-width: 760px) { .locks { grid-template-columns: 1fr; } }
.lockbox { border: 1px solid var(--border); border-radius: 11px; background: #0b0e13; overflow: hidden; }
.lockbox .lh2 { font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700;
  padding: 9px 12px; border-bottom: 1px solid var(--border); color: var(--muted); }
.lockbox.bad .lh2 { color: var(--hold); } .lockbox.good .lh2 { color: var(--pass); }
.lockbox pre { font-family: var(--mono); font-size: 11.5px; line-height: 1.55; margin: 0; padding: 11px 12px;
  overflow-x: auto; color: var(--ink); white-space: pre; }

/* variant switch */
.switch { display: flex; gap: 0; border: 1px solid var(--border-2); border-radius: 3px; overflow: hidden;
  margin-bottom: 16px; flex-wrap: wrap; }
.switch button { flex: 1; min-width: 180px; cursor: pointer; font: 600 12.5px/1.35 inherit; font-family: inherit;
  color: var(--muted); background: #0f1319; border: none; padding: 12px 14px; text-align: left;
  border-right: 1px solid var(--border-2); transition: background .12s ease, color .12s ease; }
.switch button:last-child { border-right: none; }
.switch button::before { display: block; font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 4px; font-weight: 700; }
.switch button:nth-child(1)::before { content: "Leave it alone"; }
.switch button:nth-child(2)::before { content: "→ Change it"; }
.switch button:hover { background: #141a21; color: var(--ink); }
.switch button.on { background: var(--accent); color: var(--accent-ink); }
.switch button.on::before { color: rgba(11,13,16,.65); }

/* lamps */
.lamps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 14px; }
@media (max-width: 760px) { .lamps { grid-template-columns: 1fr; } }
.lampcell { display: flex; flex-direction: column; gap: 6px; }
.lampcell .lh { font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.lamp { border: 1px solid var(--border); border-radius: 11px; padding: 12px 14px; background: #0b0e13; }
.lamp .ll { display: block; font-family: var(--mono); font-size: 17px; font-weight: 700; }
.lamp .lb { display: block; font-size: 11.5px; color: var(--muted); margin-top: 4px; line-height: 1.45; }
.lamp.green { border-color: var(--pass-bd); background: var(--pass-bg); } .lamp.green .ll { color: var(--pass); }
.lamp.red { border-color: var(--hold-bd); background: var(--hold-bg); } .lamp.red .ll { color: var(--hold); }

.verdict { border-radius: 11px; padding: 12px 15px; font-size: 13px; line-height: 1.55; margin-bottom: 14px; }
.verdict.bad { border: 1px solid var(--hold-bd); background: var(--hold-bg); color: var(--ink); }
.verdict.ok { border: 1px solid var(--border); background: #0f1319; color: var(--muted); }
.verdict b { color: var(--ink); }

/* 2x2 grid */
.grid table { border-collapse: collapse; width: 100%; font-size: 12.5px; }
.grid th, .grid td { padding: 9px 12px; text-align: left; border: 1px solid var(--border); }
.grid thead th { background: var(--panel-2); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.grid tbody th { font-weight: 600; color: var(--ink); background: var(--panel); width: 27%; }
.grid td { font-family: var(--mono); font-size: 11.5px; font-weight: 700; }
.grid td.g { color: var(--pass); } .grid td.r { color: var(--hold); }
@media (max-width: 620px) { .grid { overflow-x: auto; } .grid table { min-width: 520px; } }

.moral { margin: 14px 0 0; font-size: 13.5px; color: var(--ink); border-left: 2px solid var(--accent);
  padding: 2px 0 2px 13px; line-height: 1.6; }
.moral code { font-family: var(--mono); font-size: 11.5px; background: #0b0e13; border: 1px solid var(--border);
  border-radius: 5px; padding: 1px 5px; }
.tally { margin: 12px 2px 0; font-size: 12.5px; color: var(--muted); } .tally b { color: var(--ink); }
.tally .done { color: var(--hold); }