/* Page frame, type and shared controls. Round-specific styles live in rounds.css. */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 400 17px/1.55 var(--font-sans);
  display: flex; flex-direction: column; min-height: 100vh;
}
a { color: var(--primary); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px 24px; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 92%, transparent); backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 14px; min-height: 44px; text-decoration: none; color: var(--ink); }
.wordmark { font: 800 26px/1 var(--font-display); letter-spacing: -.04em; }
.wordmark i { font-style: normal; color: var(--primary); }
.by { display: flex; align-items: center; padding-left: 14px; border-left: 1px solid var(--border); }
.by img { height: 20px; width: auto; }
nav { display: flex; gap: 4px; }
nav a {
  color: var(--muted-fg); text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 8px 12px; border-radius: var(--radius); min-height: 44px; display: inline-flex; align-items: center;
}
nav a[aria-current="page"] { color: var(--tone-indigo-fg); background: var(--tone-indigo); }

main { width: 100%; max-width: 720px; margin: 0 auto; padding: 28px 16px 48px; flex: 1; outline: none; }
.foot {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 16px; font-size: 14px; color: var(--muted-fg); border-top: 1px solid var(--border);
}
.foot a { color: var(--muted-fg); display: inline-flex; align-items: center; min-height: 32px; }

main.wide { max-width: 1120px; padding-left: 24px; padding-right: 24px; }
.display { font: 800 38px/1.08 var(--font-display); letter-spacing: -.03em; margin: 4px 0 12px; color: var(--ink); }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--muted-fg); margin: 0; }
.lead { font-size: 18px; margin: 0 0 20px; }
.muted { color: var(--muted-fg); }
.section { font-size: 19px; font-weight: 700; margin: 32px 0 10px; }
mark { background: var(--root-bg); color: var(--root-fg); border-radius: 3px; padding: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; text-decoration: none;
  font: 700 16px var(--font-sans); min-height: 48px; padding: 10px 20px; border-radius: var(--radius);
  border: 2px solid var(--border); background: var(--card); color: var(--fg); cursor: pointer;
  box-shadow: 0 3px 0 var(--border);
}
.btn:hover:not(:disabled) { border-color: var(--primary); }
.btn:active:not(:disabled) { transform: translateY(2px); box-shadow: 0 1px 0 var(--border); }
.btn:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; }
.btn.primary {
  background: var(--primary); color: var(--primary-fg); border-color: var(--primary); margin-top: 22px;
  box-shadow: 0 4px 0 var(--primary-deep); min-width: 160px; font-size: 17px;
}
.btn.primary:active:not(:disabled) { box-shadow: 0 1px 0 var(--primary-deep); }
.btn.big { font-size: 18px; padding: 14px 28px; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

.feedback { border-radius: var(--radius-lg); padding: 14px 18px; margin-top: 20px; border: 2px solid transparent; }
.feedback > p:first-child b { font: 800 20px var(--font-display); letter-spacing: -.01em; }
.feedback p { margin: 0 0 6px; }
.feedback p:last-child { margin-bottom: 0; }
.feedback.good { background: var(--good-bg); border-color: color-mix(in srgb, var(--good) 30%, transparent); }
.feedback.miss { background: var(--miss-bg); border-color: color-mix(in srgb, var(--miss) 30%, transparent); }

.prose p, .prose li { max-width: 62ch; }
.prose li { margin: 8px 0; }

.control fieldset { border: 1px solid var(--border); border-radius: var(--radius-lg); margin: 0 0 12px; padding: 12px 14px; background: var(--card); }
.control legend { font-weight: 700; padding: 0 4px; }
.control .muted { font-size: 14px; margin: 8px 0 0; }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; }
.seg span { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 14px; border: 1px solid var(--border); border-radius: var(--radius); }
.seg input:checked + span { border-color: var(--primary); background: var(--primary); color: var(--primary-fg); font-weight: 600; }
.seg input:focus-visible + span { outline: 3px solid var(--primary); outline-offset: 2px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--card); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted-fg); font-weight: 600; }
tr.due td { background: var(--miss-bg); }

@media (max-width: 480px) {
  .display { font-size: 28px; }
  .by { display: none; }
  .wordmark { font-size: 23px; }
  nav a { padding: 8px; font-size: 15px; }
  .top { padding: 8px 12px; }
  main.wide { padding-left: 16px; padding-right: 16px; }
  .btn.primary { width: 100%; }
}

/* Rendered Markdown docs */
.doc-nav { display: flex; gap: 16px; margin-bottom: 18px; font-weight: 600; }
.doc-nav a { display: inline-flex; align-items: center; min-height: 32px; }
.doc h1 { font: 800 34px/1.1 var(--font-display); letter-spacing: -.03em; color: var(--ink); margin: 0 0 16px; }
.doc h2 { font: 800 24px/1.2 var(--font-display); letter-spacing: -.02em; color: var(--ink); margin: 32px 0 10px; }
.doc h3 { font-size: 19px; margin: 24px 0 8px; }
.doc code { font-size: .9em; background: var(--muted); padding: 1px 5px; border-radius: 5px; }
.doc pre { background: var(--muted); padding: 12px 14px; border-radius: var(--radius); overflow-x: auto; }
.doc pre code { background: none; padding: 0; }
.doc .scroll { margin: 14px 0; }
.doc td, .doc th { white-space: normal; vertical-align: top; min-width: 9em; font-size: 15px; line-height: 1.45; }
.doc-list { padding-left: 1.2em; }
.doc-list a { display: inline-flex; min-height: 32px; align-items: center; }