/* Calculation lab: a simple test page, styled lightly in the ORBIT direction. */
:root {
  --cream: #f4efe6;
  --ink: #221c27;
  --muted: #6b6270;
  --rule: #d8cfc2;
  --accent: #5b2a45;
  --pass: #2f6b3f;
  --fail: #a3292b;
  --serif: 'Bodoni Moda', Didot, 'Bodoni 72', Georgia, serif;
  --sans: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
}

main { max-width: 980px; margin: 0 auto; padding: 48px 16px 96px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.15; }
h1 { font-size: clamp(2.6rem, 7vw, 4.2rem); margin: 0.2em 0; }
h2 { font-size: 1.9rem; margin: 0 0 0.6em; }
h3 { font-size: 1.35rem; margin: 1.6em 0 0.5em; }

.eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.75rem; color: var(--muted); margin: 0; }
.lede { max-width: 62ch; color: var(--muted); }

section { border-top: 1px solid var(--rule); padding: 40px 0; }
.masthead { padding-bottom: 32px; }

.field { margin-bottom: 24px; max-width: 520px; }
label { display: block; font-weight: 500; margin-bottom: 6px; }
label.check { font-weight: 400; margin-top: 8px; display: flex; gap: 8px; align-items: center; }

input[type="date"], input[type="time"], input[type="text"] {
  font: inherit; color: inherit;
  width: 100%; padding: 10px 12px;
  background: transparent; border: 1px solid var(--ink); border-radius: 0;
}
input:disabled { opacity: 0.4; }

.row { display: flex; gap: 8px; }

button {
  font: inherit; font-size: 0.9rem; letter-spacing: 0.04em;
  padding: 10px 16px; border: 1px solid var(--ink); border-radius: 0;
  background: transparent; color: var(--ink); cursor: pointer;
}
button.primary { background: var(--ink); color: var(--cream); }
button:hover { background: var(--accent); border-color: var(--accent); color: var(--cream); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; }

fieldset { border: 0; border-left: 1px solid var(--rule); margin: 12px 0; padding: 4px 0 4px 16px; }
legend { font-size: 0.9rem; color: var(--muted); padding: 0; margin-bottom: 8px; }
fieldset label { font-weight: 400; display: flex; gap: 8px; align-items: baseline; }

.hint { font-size: 0.9rem; color: var(--muted); margin: 6px 0 0; }
.chosen { font-size: 0.9rem; margin: 8px 0 0; }
.error { color: var(--fail); font-weight: 500; }
.error:empty { display: none; }

.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 24px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }

.notice { border-left: 2px solid var(--accent); padding: 4px 0 4px 14px; max-width: 62ch; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 8px 12px 8px 0; border-bottom: 1px solid var(--rule); white-space: nowrap; }
th { font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
td.pass { color: var(--pass); font-weight: 600; }
td.fail { color: var(--fail); font-weight: 600; }
.summary { font-family: var(--serif); font-size: 1.4rem; margin: 16px 0; }

@media (max-width: 600px) {
  main { padding-top: 32px; }
  .facts { grid-template-columns: 1fr; }
  .facts dd { margin-bottom: 8px; }
}