/*
  Quakestorm PH — site styles.

  Direction: a monitoring readout, not a product landing page. The subject is
  instruments and bulletins, so the page is built from hairline-ruled data rows
  and a fixed label gutter, set in the platform's own monospace.

  Committed dark, matching the app's .preferredColorScheme(.dark). Every colour
  is painted explicitly so the page never borrows the host's ground.
*/

:root {
  /* Ground and neutrals — biased blue rather than grey, so they read as chosen. */
  --ink:        #0B1020;
  --ink-2:      #131A31;
  --rule:       #232C49;
  --rule-soft:  #1A2138;
  --paper:      #E8ECF5;
  --paper-dim:  #8D97B0;
  --paper-faint:#5D6885;

  /* One accent, taken from the app icon. Spent sparingly. */
  --volt:       #B346FF;
  --volt-dim:   #7C4BC4;

  /* Semantic, not decorative: EarthquakeSeverity from the app, verbatim. */
  --m-minor:    #4CC78C;
  --m-light:    #DBC93D;
  --m-moderate: #FA8C26;
  --m-strong:   #EB3833;
  --m-major:    #C21A2E;
  --m-great:    #8F0D52;

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --gutter: 8.5rem;
  --measure: 34rem;
  --edge: 2rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font: 400 16px/1.6 var(--sans);
  font-variant-numeric: tabular-nums;
}

.wrap {
  max-width: 60rem;
  margin: 0 auto;
  padding: 0 var(--edge);
}

a { color: var(--paper); text-decoration-color: var(--volt-dim); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--volt); }

:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

/* --- Ruled row: fixed label gutter, content beside it ------------------ */

.row {
  display: grid;
  grid-template-columns: var(--gutter) minmax(0, 1fr);
  gap: 0 2.5rem;
  padding: 2.75rem 0;
  border-top: 1px solid var(--rule-soft);
}

.row > .label {
  font: 500 0.7rem/1.5 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-faint);
  padding-top: 0.35rem;
}

.row h2 {
  font: 500 1.05rem/1.4 var(--mono);
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
  color: var(--paper);
}

.row p { max-width: var(--measure); color: var(--paper-dim); margin: 0 0 1rem; }
.row p:last-child { margin-bottom: 0; }

@media (max-width: 46rem) {
  :root { --gutter: 0; --edge: 1.25rem; }
  .row { grid-template-columns: 1fr; gap: 0; padding: 2.25rem 0; }
  .row > .label { padding: 0 0 0.9rem; }
}

/* --- Masthead --------------------------------------------------------- */

.masthead {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 1.5rem 0;
  font: 500 0.82rem/1 var(--mono);
  letter-spacing: 0.02em;
}
.masthead .spacer { flex: 1; }
.masthead nav { display: flex; gap: 1.5rem; }
.masthead nav a {
  color: var(--paper-faint);
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.masthead nav a:hover { color: var(--paper); }
.masthead nav a[aria-current="page"] { color: var(--paper); }
.masthead > a { color: var(--paper); text-decoration: none; }

.mark { display: block; border-radius: 22%; flex: none; }

/* --- Lede ------------------------------------------------------------- */

.lede { padding: 4.5rem 0 3.5rem; }

.lede h1 {
  font: 500 clamp(1.9rem, 5.2vw, 3rem)/1.12 var(--mono);
  letter-spacing: -0.035em;
  text-wrap: balance;
  margin: 0 0 1.5rem;
  max-width: 18ch;
}

.lede .sub {
  font-size: 1.05rem;
  color: var(--paper-dim);
  max-width: var(--measure);
  margin: 0 0 2.5rem;
}

/* Instrument readout: the app's real operating parameters. */
.readout {
  display: flex; flex-wrap: wrap;
  gap: 0 3rem;
  border-top: 1px solid var(--rule);
  padding-top: 1.25rem;
}
.readout div { padding: 0.35rem 0; }
.readout dt {
  font: 500 0.66rem/1.6 var(--mono);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--paper-faint);
}
.readout dd {
  margin: 0;
  font: 500 0.95rem/1.5 var(--mono);
  color: var(--paper);
}

.status {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font: 500 0.72rem/1 var(--mono);
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--paper-dim);
  margin-bottom: 1.75rem;
}
.status::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--m-minor);
  box-shadow: 0 0 0 3px rgba(76, 199, 140, 0.16);
}

/* --- Magnitude scale -------------------------------------------------- */

.scale { margin: 2rem 0 0; }
.scale .bands { display: flex; height: 5px; border-radius: 1px; overflow: hidden; }
.scale .bands span { flex: 1; }
.scale ol {
  list-style: none; margin: 0.9rem 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 0.5rem;
}
.scale li { font: 500 0.68rem/1.45 var(--mono); color: var(--paper-faint); }
.scale li b { display: block; color: var(--paper-dim); font-weight: 500; }
.scale li i { font-style: normal; color: var(--paper-faint); }

@media (max-width: 46rem) {
  .scale ol { grid-template-columns: repeat(3, 1fr); gap: 0.75rem 0.5rem; }
}

/* --- Definition list (features, alerts) ------------------------------- */

.defs { margin: 0; }
.defs > div {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 0 1.5rem;
  padding: 1.05rem 0;
  border-top: 1px solid var(--rule-soft);
}
.defs > div:first-child { border-top: 0; padding-top: 0; }
.defs dt {
  font: 500 0.78rem/1.7 var(--mono);
  color: var(--paper);
  letter-spacing: -0.005em;
}
.defs dd { margin: 0; color: var(--paper-dim); font-size: 0.95rem; }

@media (max-width: 46rem) {
  .defs > div { grid-template-columns: 1fr; gap: 0.25rem; }
}

/* --- Prose (privacy policy) ------------------------------------------- */

.prose { padding: 1rem 0 3rem; }
.prose h2 {
  font: 500 0.95rem/1.4 var(--mono);
  letter-spacing: 0.02em;
  margin: 3rem 0 0.9rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule-soft);
  color: var(--paper);
}
.prose h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.prose h3 {
  font: 500 0.8rem/1.5 var(--mono);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--paper-faint);
  margin: 1.9rem 0 0.5rem;
}
.prose p, .prose li { color: var(--paper-dim); max-width: var(--measure); }
.prose strong { color: var(--paper); font-weight: 600; }
.prose ul { padding-left: 1.1rem; }
.prose li { margin: 0.35rem 0; }
.prose li::marker { color: var(--paper-faint); }

.dochead { padding: 3rem 0 2.5rem; border-bottom: 1px solid var(--rule); margin-bottom: 2.5rem; }
.dochead h1 {
  font: 500 clamp(1.6rem, 4vw, 2.1rem)/1.15 var(--mono);
  letter-spacing: -0.03em; margin: 0 0 1rem;
}
.dochead .meta {
  display: flex; flex-wrap: wrap; gap: 0 2.5rem;
  font: 500 0.68rem/1.8 var(--mono);
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--paper-faint);
  margin: 0;
}

.brief {
  border-left: 2px solid var(--volt-dim);
  padding: 0.2rem 0 0.2rem 1.4rem;
  margin: 0 0 2.75rem;
}
.brief h2 { border: 0; padding: 0; margin: 0 0 0.7rem; }
.brief ul { margin: 0; }

.table-wrap { overflow-x: auto; margin: 1.1rem 0; }
table { border-collapse: collapse; width: 100%; min-width: 34rem; }
th, td {
  text-align: left; padding: 0.75rem 1rem 0.75rem 0;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top; color: var(--paper-dim);
  font-size: 0.9rem;
}
th {
  font: 500 0.66rem/1.6 var(--mono);
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--paper-faint);
  border-bottom-color: var(--rule);
}
td strong { color: var(--paper); }

/* --- Colophon --------------------------------------------------------- */

.colophon {
  border-top: 1px solid var(--rule);
  margin-top: 1rem;
  padding: 2.25rem 0 4rem;
  display: grid;
  grid-template-columns: var(--gutter) minmax(0, 1fr);
  gap: 0 2.5rem;
  font-size: 0.85rem;
  color: var(--paper-faint);
}
.colophon nav { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-bottom: 1.25rem; }
.colophon nav a {
  color: var(--paper-dim); text-decoration: none;
  font: 500 0.72rem/1 var(--mono);
  letter-spacing: 0.1em; text-transform: uppercase;
}
.colophon nav a:hover { color: var(--paper); }
.colophon p { margin: 0 0 0.5rem; max-width: var(--measure); }
.colophon a { color: var(--paper-dim); }

@media (max-width: 46rem) {
  .colophon { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}