/* Student pages. Tokens come from /assets/site.css. */
[hidden] { display: none !important; }
main.wrap { padding-block: 24px 64px; }
main.narrow { max-width: 640px; }
.page-title { font-size: clamp(30px, 5vw, 46px); }
.small { font-size: 15px; }
.strong { font-weight: 600; }
.stack.tight { gap: 6px; }
.row.between { justify-content: space-between; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.head { margin-bottom: 24px; }
.btn.big { font-size: 20px; padding: 14px 24px; }
.btn.small-btn { padding: 8px 16px; }
.btn { text-align: center; }

/* login */
.check { display: flex; align-items: center; gap: 10px; font-weight: 500; margin: 0; min-height: 44px; }
.check input { width: 24px; height: 24px; min-height: 0; padding: 0; accent-color: var(--sea); }

/* home */
.grid.tests { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.test-card h3 { font-size: 26px; }
.score-line { font-weight: 600; font-size: 20px; }
.panel { background: #fff; border: 2px solid var(--sea); border-radius: 10px; padding: 16px; }

/* test runner */
.runner-bar {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 24px; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 16px; margin-bottom: 16px;
}
.timer-box { display: flex; align-items: baseline; gap: 12px; }
.timer-cap { font: 500 13px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.timer { font: 500 34px var(--font-mono); color: var(--ink); }
.timer-box.low .timer { color: var(--warn); }
.timer-box.critical .timer { color: var(--bad); }
.save-status { font-size: 15px; }
.save-status.good { color: var(--ok); }
.save-status.busy { color: var(--ink-soft); }
.save-status.bad { color: var(--bad); font-weight: 600; }
.warn-banner { padding: 14px 16px; border-radius: 6px; background: var(--sun); color: var(--ink); font-weight: 600; font-size: 18px; }

.runner { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; }
.runner-main { min-width: 0; }
.qcard { padding: clamp(16px, 3vw, 32px); gap: 20px; }
.prompt { font-size: clamp(20px, 3vw, 26px); line-height: 1.5; white-space: pre-wrap; overflow-wrap: anywhere; }
.qcard input#answer { font-size: 24px; font-family: var(--font-mono); min-height: 56px; border-width: 2px; border-color: var(--ink-soft); }
.qcard input#answer:disabled { background: var(--paper); }
.qcard .row.between .btn { flex: 1 1 120px; }

.qnav-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 8px; }
.qnav {
  min-height: 44px; min-width: 44px; padding: 0; font: 600 17px var(--font-body); border-radius: 6px;
  background: #fff; color: var(--ink); border: 2px solid var(--line); cursor: pointer;
}
.qnav.done { background: var(--sea); border-color: var(--sea); color: #fff; }
.qnav.current { border-color: var(--ink); box-shadow: 0 0 0 3px var(--sun); }
.qnav[disabled] { opacity: .5; cursor: not-allowed; }

.confirm h3 { font-size: 24px; }

/* result */
.big-score { margin: 0; line-height: 1; }
.score-n { font: 800 clamp(64px, 14vw, 96px) var(--font-display); color: var(--sea); }
.score-of { font: 600 24px var(--font-body); color: var(--ink-soft); }
.review { margin-top: 32px; }
.review-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.review-item { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.small-prompt { font-size: 18px; }
.solution { background: var(--paper); border-radius: 6px; padding: 10px 12px; }
.solution .prompt { font-size: 17px; }

@media (max-width: 800px) {
  .runner { grid-template-columns: minmax(0, 1fr); }
  .runner-main { order: 1; }
  .qnav-box { order: 2; }
  .qnav-grid { grid-template-columns: repeat(auto-fill, minmax(48px, 1fr)); }
  .timer { font-size: 30px; }
}
@media (max-width: 420px) {
  body { font-size: 16px; }
  .runner-bar { padding: 8px 12px; }
  .timer-cap { display: none; }
}
@media print { .topbar, .btn { display: none; } }