:root {
  --ink: #222222;
  --muted: #666666;
  --faint: #888888;
  --line: #dddddd;
  --hair: #eeeeee;
  --accent: #2a66b0;
  --accent-dark: #1c4a85;
  --width: 880px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: #ffffff;
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

main { max-width: var(--width); margin: 0 auto; padding: 0 20px 64px; }

/* header + footer */
.site-header {
  max-width: var(--width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  align-items: center;
}
.wordmark { font-weight: 700; font-size: 17px; color: var(--ink); }
.wordmark span { color: var(--accent); }
.wordmark:hover { text-decoration: none; }
.site-header nav { display: flex; flex-wrap: wrap; gap: 20px; font-size: 15px; }

.site-footer {
  max-width: var(--width);
  margin: 0 auto;
  padding: 28px 20px 48px;
  border-top: 1px solid var(--hair);
  color: var(--faint);
  font-size: 15px;
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 10px; }
.site-footer p { margin: 0; }

/* hero + converter */
.hero { text-align: center; padding: 26px 0 0; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
.lede { font-size: 18px; color: var(--muted); margin: 0 0 22px; }

.converter {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 6px; text-align: left; flex: 1 1 0; max-width: 320px; }
.field label { font-size: 12px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--faint); }
.field input {
  width: 100%;
  font: inherit;
  font-size: 38px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  text-align: center;
  padding: 12px 10px;
  color: var(--ink);
  background: #ffffff;
  border: 1px solid #cccccc;
  border-radius: 6px;
}
.field input::placeholder { color: #c4c4c4; font-weight: 400; }
.field input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field input.invalid { border-color: #c0392b; color: #c0392b; }
#military { color: var(--accent); font-weight: 600; border-color: var(--accent); }

.swap-icon { width: 32px; height: 32px; color: var(--accent); flex: none; margin-bottom: 20px; }

.hint { font-size: 14px; color: var(--faint); margin: 12px 0 0; }
.spoken { font-size: 16px; color: var(--muted); margin: 6px 0 0; min-height: 1.6em; }

/* live clock */
.clock-block { text-align: center; padding: 26px 0 8px; }
.clock-label { font-size: 19px; color: var(--muted); margin: 0; }
.clock {
  margin: 2px 0 4px;
  font-size: clamp(56px, 10vw, 108px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: #111111;
}
.clock-seconds { font-size: 0.42em; font-weight: 400; color: var(--faint); letter-spacing: 0; }
.clock-sub { font-size: 17px; color: var(--muted); margin: 0; }

/* variant page answer */
.answer {
  margin: 14px 0 4px;
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 500;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.answer-eq { color: var(--faint); margin: 0 0.2em; font-weight: 300; }
.answer-to { color: var(--accent); font-weight: 600; }
.spoken-static { font-size: 17px; color: var(--muted); margin: 0 0 8px; }
.mini-converter { text-align: center; }
.mini-converter h2 { font-size: 17px; color: var(--faint); font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; }
.mini-converter .field input { font-size: 30px; }

/* prose blocks */
.prose { padding-top: 34px; }
.prose.narrow-top { padding-top: 24px; }
.prose h2 { font-size: 24px; margin: 26px 0 10px; line-height: 1.25; }
.prose h3 { font-size: 18px; margin: 22px 0 6px; }
.prose p, .prose li { color: #333333; }
.prose ul { padding-left: 22px; }
.prose li { margin-bottom: 6px; }
.muted { color: var(--muted); }
.centered-links { text-align: center; }

.section-head { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; }
.section-head h1, .section-head h2 { margin: 0; }

.btn {
  display: inline-block;
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  background: #ffffff;
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 9px 16px;
  cursor: pointer;
}
.btn:hover { background: #f2f7fd; text-decoration: none; }

/* tables */
.chart { width: 100%; border-collapse: collapse; margin: 16px 0 8px; font-size: 16px; }
.chart th, .chart td { text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--hair); }
.chart thead th {
  font-size: 12px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--faint);
  border-bottom: 2px solid var(--line);
}
.chart tbody th { font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.chart tbody tr:hover { background: #fafbfc; }
.chart .note { font-size: 15px; line-height: 1.45; }
.minutes-chart td, .minutes-chart th { padding: 7px 12px; }
.compact { max-width: 460px; }

/* embed snippets */
.snippet {
  background: #f7f8f9;
  border: 1px solid var(--hair);
  border-radius: 6px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  margin: 8px 0 10px;
}

/* variant link grid */
.variant-links { padding-top: 40px; }
.variant-links h2 { font-size: 24px; margin-bottom: 4px; }
.variant-links h3 { font-size: 15px; color: var(--faint); text-transform: uppercase; letter-spacing: 0.07em; margin: 18px 0 8px; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 36px; }
.link-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px 10px;
  font-size: 15px;
}

/* pager */
.pager {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--hair);
  font-size: 15px;
}
.pager-up { color: var(--muted); }

/* embed page */
.embed { max-width: 720px; padding: 18px 16px 12px; }
.embed-title { font-size: 20px; text-align: center; margin: 0 0 14px; }
.embed .clock-block { padding: 8px 0 0; }
.embed .clock { font-size: clamp(40px, 9vw, 60px); }
.embed .clock-label { font-size: 16px; }
.embed .clock-sub { font-size: 14px; }
.embed .field input { font-size: 30px; }
.embed .hint { margin-top: 8px; }
.embed .spoken { min-height: 0; }
.powered-by { text-align: center; font-size: 13px; color: var(--faint); margin: 12px 0 0; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  h1 { font-size: 27px; }
  .lede { font-size: 17px; }
  .converter { flex-direction: column; align-items: stretch; gap: 10px; }
  .field { max-width: none; }
  .field input { font-size: 32px; }
  .swap-icon { transform: rotate(90deg); margin: 0 auto; width: 26px; height: 26px; }
  .clock-label { font-size: 17px; }
  .two-col { grid-template-columns: 1fr; }
  .link-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .chart th, .chart td { padding: 8px 8px; font-size: 15px; }
  .chart .note { display: none; }
}

@media print {
  .site-header, .site-footer, .no-print, .btn, .pager, .variant-links, .hint, .spoken, .converter, .clock-block { display: none !important; }
  body { font-size: 12pt; color: #000000; }
  main { max-width: none; padding: 0; }
  a { color: #000000; text-decoration: none; }
  h1 { font-size: 20pt; }
  .lede { color: #000000; font-size: 11pt; }
  .chart { font-size: 11pt; }
  .chart th, .chart td { border-bottom: 1px solid #999999; padding: 5px 8px; color: #000000; white-space: nowrap; }
  .chart thead th { border-bottom: 2px solid #000000; color: #000000; }
  /* Drop the commentary column so the chart stays a one-sheet wall reference. */
  .chart .note { display: none; }
  .prose { padding-top: 0; }
  tr, thead { page-break-inside: avoid; }
}