/* Tessera Phase 0b, W0 device test page. System fonts only: no network. */

:root {
  color-scheme: light dark;
  --ground: #f7f7f4;
  --surface: #ffffff;
  --ink: #1b1f1e;
  --muted: #535d5a;
  --line: #d3d8d5;
  --brand: #1d4a42;
  --brand-ink: #ffffff;
  --ok: #1d6436;
  --ok-bg: #e3f1e7;
  --fail: #962a2a;
  --fail-bg: #f8e4e2;
  --warn: #6f4a00;
  --warn-bg: #fbefd6;
  --busy: #1c467f;
  --busy-bg: #e2eaf6;
  --focus: #1c467f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #121514;
    --surface: #1b1f1e;
    --ink: #eef1ef;
    --muted: #a9b2ae;
    --line: #363d3a;
    --brand: #7cc4b3;
    --brand-ink: #0f1a17;
    --ok: #8fd6a4;
    --ok-bg: #16301f;
    --fail: #f2a39b;
    --fail-bg: #3a1c1a;
    --warn: #f0c46a;
    --warn-bg: #33270f;
    --busy: #9dbdf2;
    --busy-bg: #172238;
    --focus: #9dbdf2;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
}
main { max-width: 46rem; margin: 0 auto; padding: 1rem 1rem 4rem; }

h1 { font-size: 1.6rem; line-height: 1.2; margin: 0.5rem 0; }
h2 { font-size: 1.25rem; line-height: 1.3; margin: 0 0 0.5rem; }
h3 { font-size: 1.05rem; margin: 1.25rem 0 0.25rem; }
p, ol, ul { margin: 0.5rem 0; }
ol, ul { padding-left: 1.4rem; }
li { margin: 0.25rem 0; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.92em; }

.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; background: var(--surface); padding: 0.5rem; z-index: 1; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  margin: 1rem 0;
}
.card > h2 .num { color: var(--muted); font-variant-numeric: tabular-nums; }
.part { border-top: 1px solid var(--line); margin-top: 1rem; padding-top: 0.25rem; }

.muted { color: var(--muted); font-size: 0.94rem; }

.banner {
  border-left: 4px solid var(--warn);
  background: var(--warn-bg);
  color: var(--ink);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  margin: 0.75rem 0;
}
.banner:empty { display: none; }

.meta { display: grid; grid-template-columns: max-content 1fr; gap: 0.15rem 0.75rem; font-size: 0.92rem; margin: 0.5rem 0; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; overflow-wrap: anywhere; }

button {
  font: inherit;
  font-weight: 600;
  min-height: 48px;
  padding: 0.6rem 1rem;
  margin: 0.25rem 0.5rem 0.25rem 0;
  border-radius: 10px;
  border: 1px solid var(--brand);
  background: var(--brand);
  color: var(--brand-ink);
  cursor: pointer;
  text-align: left;
}
button.secondary { background: transparent; color: var(--ink); border-color: var(--line); }
button[aria-disabled="true"] { opacity: 0.55; cursor: progress; }

button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible, a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.actions { display: flex; flex-wrap: wrap; align-items: center; }
@media (max-width: 480px) {
  .actions button { flex: 1 1 100%; margin-right: 0; }
}

label { display: block; font-weight: 600; margin: 0.75rem 0 0.25rem; }
input[type="text"], select, textarea {
  font: inherit;
  width: 100%;
  min-height: 44px;
  padding: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
}
textarea { min-height: 8rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85rem; }

fieldset { border: 1px solid var(--line); border-radius: 10px; margin: 0.75rem 0; padding: 0.5rem 0.75rem; }
legend { font-weight: 600; padding: 0 0.25rem; }
.choice { display: flex; gap: 0.6rem; align-items: flex-start; font-weight: 400; margin: 0.4rem 0; }
.choice input { width: 1.3rem; height: 1.3rem; margin: 0.15rem 0 0; flex: none; }

.status { padding: 0.5rem 0.75rem; border-radius: 8px; margin: 0.5rem 0; }
.status:empty { display: none; }
[data-tone="ok"] { background: var(--ok-bg); color: var(--ok); }
[data-tone="fail"] { background: var(--fail-bg); color: var(--fail); }
[data-tone="warn"] { background: var(--warn-bg); color: var(--warn); }
[data-tone="busy"] { background: var(--busy-bg); color: var(--busy); }

.counter { font-size: 1.1rem; font-weight: 700; }

.log { list-style: none; padding: 0; margin: 0.5rem 0 0; font-size: 0.9rem; }
.log li { border-top: 1px solid var(--line); padding: 0.35rem 0; overflow-wrap: anywhere; }
.badge { display: inline-block; font-weight: 700; padding: 0 0.4rem; border-radius: 6px; margin-right: 0.35rem; }
.badge.pass { background: var(--ok-bg); color: var(--ok); }
.badge.fail { background: var(--fail-bg); color: var(--fail); }
.badge.info { background: var(--busy-bg); color: var(--busy); }

.fp { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: 0.02em; }

meter { display: block; width: 100%; height: 1.25rem; margin: 0.25rem 0; }

.passphrase {
  font-size: 1.4rem;
  font-weight: 700;
  word-spacing: 0.4em;
  padding: 0.75rem;
  background: var(--warn-bg);
  color: var(--ink);
  border-radius: 8px;
  overflow-wrap: anywhere;
}
.passphrase:empty { display: none; }

details { margin: 0.5rem 0; }
summary { cursor: pointer; font-weight: 600; padding: 0.25rem 0; }

.verdict { font-size: 1.15rem; font-weight: 700; padding: 0.75rem; border-radius: 8px; }
.criteria { list-style: none; padding: 0; }
.criteria li { padding: 0.45rem 0; border-top: 1px solid var(--line); }

.toc ol { columns: 2; }
@media (max-width: 480px) { .toc ol { columns: 1; } }