/* Pearl Atlas — cartographer's map-room theme.
   Deep ink navy, brass gold, parchment. No external assets. */
:root {
  --ink: #0b1220;
  --ink2: #0e1728;
  --ink3: #111d33;
  --brass: #c9a227;
  --brass-dim: #8a6d1f;
  --parchment: #e8dcc0;
  --parchment-dim: #b9ac8b;
  --alert: #d97b3f;
  --good: #7ba05b;
  --bad: #c0524a;
  --serif: Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 50% -10%, #16233c 0%, var(--ink) 60%),
    var(--ink);
  color: var(--parchment);
  font-family: var(--serif);
  line-height: 1.55;
  min-height: 100vh;
}
.mono { font-family: var(--mono); font-size: 0.92em; }

/* masthead */
.masthead {
  display: flex; align-items: center; gap: 1.2rem;
  padding: 1.6rem 2rem 1.2rem;
  border-bottom: 1px solid var(--brass-dim);
  background: linear-gradient(180deg, rgba(201,162,39,0.06), transparent);
}
.rose { width: 64px; height: 64px; flex: none; }
.masthead h1 {
  margin: 0; font-size: 2rem; letter-spacing: 0.12em; color: var(--brass);
  text-transform: uppercase; font-weight: 600;
}
.tagline { margin: 0.2rem 0 0; color: var(--parchment-dim); font-style: italic; }
.attrib-chip {
  margin-left: auto; border: 1px solid var(--brass-dim); color: var(--brass);
  padding: 0.25rem 0.8rem; border-radius: 999px; font-family: var(--mono);
  font-size: 0.85rem; white-space: nowrap;
}

/* tabs */
.tabs {
  display: flex; gap: 0.4rem; padding: 0.8rem 2rem 0;
  border-bottom: 1px solid var(--brass-dim); flex-wrap: wrap;
}
.tab {
  background: transparent; border: 1px solid transparent; border-bottom: none;
  color: var(--parchment-dim); font-family: var(--serif); font-size: 1rem;
  padding: 0.55rem 1.2rem; cursor: pointer; border-radius: 6px 6px 0 0;
  letter-spacing: 0.04em;
}
.tab:hover { color: var(--parchment); }
.tab.active {
  color: var(--brass); border-color: var(--brass-dim);
  background: var(--ink2);
}

/* panels */
main { max-width: 1060px; margin: 0 auto; padding: 1.6rem 2rem 3rem; }
.panel h2 { color: var(--brass); font-weight: 600; letter-spacing: 0.06em; margin-top: 0; }
.hidden { display: none !important; }
.hint { color: var(--parchment-dim); max-width: 70ch; }
textarea, input[type="number"], select {
  width: 100%; background: var(--ink3); color: var(--parchment);
  border: 1px solid var(--brass-dim); border-radius: 6px;
  font-family: var(--mono); font-size: 0.9rem; padding: 0.7rem;
}
textarea:focus, input:focus, select:focus { outline: 1px solid var(--brass); }
label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.9rem; color: var(--parchment-dim); }
label input, label select { width: auto; min-width: 10rem; }
.row { display: flex; gap: 0.7rem; margin: 0.9rem 0; align-items: flex-end; flex-wrap: wrap; }
.row.wrap { align-items: flex-end; }
.btn {
  background: linear-gradient(180deg, #d9b63a, #a8842a); color: #1a1405;
  border: 1px solid #6e5518; border-radius: 6px; padding: 0.6rem 1.3rem;
  font-family: var(--serif); font-size: 1rem; cursor: pointer; font-weight: 600;
  letter-spacing: 0.03em;
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--brass); border: 1px solid var(--brass-dim); }
.btn.danger { background: transparent; color: var(--alert); border: 1px solid var(--alert); }
.out { margin-top: 1rem; }
.out:empty { display: none; }

/* result cards */
.card {
  border: 1px solid var(--brass-dim); border-radius: 8px;
  background: linear-gradient(180deg, rgba(201,162,39,0.05), transparent 40%), var(--ink2);
  padding: 1rem 1.2rem; margin-bottom: 1rem;
}
.card h3 { margin: 0 0 0.6rem; color: var(--brass); font-size: 1.05rem; letter-spacing: 0.05em; }
.kv { display: grid; grid-template-columns: 11rem 1fr; gap: 0.3rem 1rem; font-size: 0.95rem; }
.kv dt { color: var(--parchment-dim); }
.kv dd { margin: 0; font-family: var(--mono); font-size: 0.88rem; word-break: break-all; }
table.chart { width: 100%; border-collapse: collapse; font-size: 0.88rem; margin-top: 0.6rem; }
table.chart th, table.chart td {
  border: 1px solid rgba(201,162,39,0.25); padding: 0.45rem 0.6rem; text-align: left;
  font-family: var(--mono); font-size: 0.82rem; word-break: break-all; vertical-align: top;
}
table.chart th { color: var(--brass); font-family: var(--serif); font-size: 0.9rem; background: rgba(201,162,39,0.06); }
.pill {
  display: inline-block; padding: 0.1rem 0.6rem; border-radius: 999px;
  font-size: 0.78rem; border: 1px solid var(--brass-dim); color: var(--brass);
  font-family: var(--serif); white-space: nowrap;
}
.pill.good { color: var(--good); border-color: var(--good); }
.pill.bad { color: var(--bad); border-color: var(--bad); }
.pill.warn { color: var(--alert); border-color: var(--alert); }
.tree { font-family: var(--mono); font-size: 0.82rem; white-space: pre-wrap; word-break: break-all;
  background: var(--ink3); border: 1px solid rgba(201,162,39,0.25); border-radius: 6px; padding: 0.8rem; }
.err { color: var(--bad); border: 1px solid var(--bad); border-radius: 6px; padding: 0.8rem 1rem; background: rgba(192,82,74,0.08); }
.ok-line { color: var(--good); }
.bad-line { color: var(--bad); }
.warn {
  border: 1px solid var(--alert); color: #f0c9a3; background: rgba(217,123,63,0.1);
  border-radius: 6px; padding: 0.8rem 1rem; margin: 0.8rem 0;
}

/* templates */
.tmpl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.tmpl { border: 1px solid var(--brass-dim); border-radius: 8px; padding: 1rem 1.2rem; background: var(--ink2); }
.tmpl h3 { margin: 0 0 0.4rem; color: var(--brass); }
.tmpl p { color: var(--parchment-dim); font-size: 0.92rem; margin: 0 0 0.7rem; }
.tmpl code { display: block; font-family: var(--mono); font-size: 0.75rem; word-break: break-all;
  background: var(--ink3); padding: 0.5rem; border-radius: 4px; margin-bottom: 0.7rem; color: var(--parchment-dim); }

/* honest limits */
.limits {
  margin-top: 2.5rem; border: 2px solid var(--brass-dim); border-radius: 10px;
  padding: 1.2rem 1.5rem; background:
    repeating-linear-gradient(45deg, rgba(201,162,39,0.03) 0 12px, transparent 12px 24px), var(--ink2);
}
.limits h2 { color: var(--brass); margin: 0 0 0.6rem; font-size: 1.15rem; letter-spacing: 0.06em; }
.limits ul { margin: 0; padding-left: 1.3rem; }
.limits li { margin-bottom: 0.5rem; color: var(--parchment-dim); }
.limits strong { color: var(--parchment); }

footer { text-align: center; padding: 1.5rem; border-top: 1px solid var(--brass-dim); color: var(--parchment-dim); }
footer .copy { cursor: pointer; border-bottom: 1px dotted var(--brass-dim); }
footer .fine { font-size: 0.82rem; font-style: italic; }

@media (max-width: 640px) {
  .masthead { flex-wrap: wrap; }
  .kv { grid-template-columns: 1fr; }
  main { padding: 1rem; }
}

/* Keyboard focus: a visible ring in this app's accent on every interactive element (fleet focus-visible pass). */
:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

/* Skip link: the first Tab stop on the page — parked off-screen until keyboard focus reveals it (fleet skip-link pass). */
.skip-link { position: absolute; left: 12px; top: -64px; z-index: 1000; padding: 10px 16px; border: 2px solid var(--brass); border-radius: 8px; background: #0b0e14; color: var(--brass); font-weight: 700; text-decoration: none; transition: top .15s ease; }
.skip-link:focus-visible { top: 12px; }
main:focus { outline: none; }

/* Reduced motion: when the OS asks for reduced motion, animations and transitions finish near-instantly and scrolling is not smoothed (fleet reduced-motion pass). Near-zero durations — not animation: none — so fade-ins still land on their end state and no content can be stranded invisible. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* reflow (WCAG 1.4.10): the 62-char tip address must wrap at 320px, not stretch the page */
#tip-addr { overflow-wrap: anywhere; }