/* Meridian tokens: graphite and orange. Phone width first; dark by default, light by system setting. */
:root {
  --graphite: #3c3c3a;
  --orange: #ed771f;
  --bg: #2b2b29;
  --card: #3c3c3a;
  --ink: #f5f3f0;
  --muted: #b9b6b0;
  --line: #55554f;
  --good: #5fc994;
  --warn: #f0b24a;
  --bad: #ff8a80;
  --on-accent: #1d1d1b;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f3f0;
    --card: #ffffff;
    --ink: #3c3c3a;
    --muted: #5f5f5b;
    --line: #e6e3df;
    --good: #176b45;
    --warn: #805500;
    --bad: #b3261e;
    --on-accent: #1d1d1b;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 3px solid var(--orange);
  background: var(--graphite);
  color: #f5f3f0;
}
.brand { font-weight: 700; letter-spacing: 0.04em; }
.clock { margin-left: auto; color: #d6d3cd; font-variant-numeric: tabular-nums; }
main { max-width: 34rem; margin: 0 auto; padding: 12px 12px 32px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 12px 0;
}
h1, h2 { margin: 0 0 6px; font-size: 1.1rem; }
h2 { color: var(--orange); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }
p { margin: 6px 0; }
.big { font-size: 1.15rem; font-weight: 600; }
.strong { font-weight: 600; }
.muted { color: var(--muted); font-size: 0.9rem; }
.label { color: var(--orange); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; margin: 0; }
.fingerprint { font: 700 1.6rem/1.2 ui-monospace, Menlo, Consolas, monospace; letter-spacing: 0.08em; }
label { display: block; margin-top: 10px; color: var(--muted); font-size: 0.85rem; }
input {
  width: 100%;
  margin: 4px 0 12px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  font: 700 1.2rem ui-monospace, Menlo, Consolas, monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
button {
  min-height: 48px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
}
button.primary { background: var(--orange); border-color: var(--orange); color: var(--on-accent); width: 100%; }
button.quiet { width: 100%; }
button:focus-visible, input:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; }
.tiles { list-style: none; margin: 10px 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tiles li { border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.tiles .v { display: block; font-size: 1.25rem; font-weight: 700; }
.tiles .l { display: block; color: var(--muted); font-size: 0.8rem; }
.tone-good { color: var(--good); }
.tone-warn { color: var(--warn); }
.tone-bad { color: var(--bad); }
.focus { border-left: 4px solid var(--orange); padding-left: 10px; margin: 12px 0; }
.items { list-style: none; margin: 4px 0 12px; padding: 0; }
.items li { padding: 8px 0; border-top: 1px solid var(--line); display: flex; gap: 8px; align-items: baseline; }
.items .tag { margin-left: auto; color: var(--muted); font-size: 0.75rem; white-space: nowrap; }
.sect-head { margin: 14px 0 0; }
.message { min-height: 1.4em; color: var(--warn); text-align: center; }
[hidden] { display: none !important; }
@media (prefers-reduced-motion: no-preference) {
  button { transition: transform 0.08s; }
  button:active { transform: scale(0.98); }
}