:root {
  --bg: #edf1f4;
  --panel: #ffffff;
  --panel-muted: #f6f8fa;
  --border: #ccd6de;
  --border-strong: #92a2b0;
  --text: #1d2730;
  --text-muted: #576774;
  --accent: #0f5c7a;
  --accent-strong: #0a4358;
  --accent-soft: #d8eaf1;
  --success: #2c6b2f;
  --success-soft: #e3f1e4;
  --warning: #9a5a00;
  --warning-soft: #fff1db;
  --danger: #8b2e2e;
  --danger-soft: #f8e4e4;
  --shadow: 0 12px 28px rgba(19, 34, 45, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Source Sans 3', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(15, 92, 122, 0.12), transparent 28%),
    linear-gradient(180deg, #f8fbfc 0%, var(--bg) 45%, #e5ebef 100%);
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--accent-strong);
  color: #fff;
  box-shadow: var(--shadow);
  transform: translateY(-200%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 3px solid rgba(15, 92, 122, 0.35);
  outline-offset: 3px;
}

.site-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.site-header {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 24px;
}

.site-header-tight {
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.05;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.page-intro,
.section-heading p,
.helper-text,
.test-card p,
.empty-state {
  color: var(--text-muted);
}

.page {
  display: grid;
  gap: 20px;
}

.test-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 20px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(146, 162, 176, 0.35);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.panel-spacious {
  padding: 24px;
}

.section-heading,
.progress-row,
.question-meta-row,
.test-card-header,
.button-row,
.status-strip,
.score-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.status-strip,
.score-meta {
  flex-wrap: wrap;
}

.status-card {
  min-width: 132px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(146, 162, 176, 0.4);
}

.status-label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.timer-value.timer-warning {
  color: var(--danger);
}

.progress-panel {
  position: sticky;
  top: 12px;
  z-index: 10;
}

.progress-copy {
  display: grid;
  gap: 4px;
}

.progress-copy span {
  color: var(--text-muted);
}

.autosave-note {
  margin-top: 12px;
}

.progress-bar {
  margin-top: 16px;
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #dfe7ec;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #3383a4);
}

.test-grid,
.review-list {
  display: grid;
  gap: 16px;
}

.test-card,
.result-card {
  display: grid;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(180deg, #fff 0%, #fbfdff 100%);
}

.test-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin: 0;
}

.test-meta div {
  padding: 12px;
  background: var(--panel-muted);
  border-radius: 12px;
}

.test-meta dt {
  margin-bottom: 4px;
  font-weight: 700;
  color: var(--text-muted);
}

.test-meta dd {
  margin: 0;
}

.resume-banner {
  display: grid;
  gap: 4px;
  padding: 12px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.button-row {
  flex-wrap: wrap;
}

.button-row-spread {
  justify-content: space-between;
}

.progress-actions {
  justify-content: flex-end;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.button-primary {
  background: var(--accent);
  color: #fff;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
}

.button-secondary {
  background: #fff;
  border-color: var(--border-strong);
  color: var(--text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--panel-muted);
}

.button-danger {
  background: var(--danger-soft);
  border-color: var(--danger);
  color: var(--danger);
}

.button-danger:hover,
.button-danger:focus-visible {
  background: #f3d3d3;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--panel-muted);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.pill-flagged {
  background: var(--warning-soft);
  color: var(--warning);
}

.pill-marks {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.question-type {
  font-weight: 700;
  color: var(--accent);
}

.question-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.option-list,
.matching-grid,
.short-answer-block,
.result-detail-block {
  display: grid;
  gap: 12px;
}

.question-group {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.option-list-inline {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.option-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
}

.option-card:hover,
.option-card:focus-within,
.review-item:hover,
.review-item:focus-visible,
.question-nav-button:hover,
.question-nav-button:focus-visible,
.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 3px rgba(15, 92, 122, 0.12);
}

.option-card input {
  margin-top: 4px;
}

select:focus-visible,
textarea:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 92, 122, 0.12);
}

.matching-row {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel-muted);
}

select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
}

select {
  cursor: pointer;
}

textarea {
  resize: vertical;
}

.review-item {
  display: grid;
  gap: 8px;
  justify-items: start;
  width: 100%;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  text-align: left;
  cursor: pointer;
}

.review-number {
  font-weight: 700;
}

.review-text {
  color: var(--text-muted);
}

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

.question-nav-panel {
  position: sticky;
  top: 116px;
  display: grid;
  gap: 16px;
}

.question-nav-panel[hidden] {
  display: none !important;
}

.question-nav-heading h2 {
  margin-bottom: 6px;
  font-size: 1.25rem;
}

.question-nav-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.question-nav-button {
  display: grid;
  gap: 4px;
  min-height: 78px;
  padding: 10px 8px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
  text-align: center;
  cursor: pointer;
}

.question-nav-number {
  font-size: 1.1rem;
  font-weight: 700;
}

.question-nav-label,
.question-nav-flag {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.question-nav-flag {
  color: var(--warning);
  font-weight: 700;
}

.question-nav-answered {
  background: linear-gradient(180deg, #f8fcfe 0%, var(--accent-soft) 100%);
}

.question-nav-unanswered {
  background: linear-gradient(180deg, #fffdfa 0%, var(--warning-soft) 100%);
}

.question-nav-current {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 92, 122, 0.18);
}

.question-nav-flagged {
  outline: 2px dashed rgba(154, 90, 0, 0.55);
  outline-offset: 2px;
}

.question-nav-legend {
  display: grid;
  gap: 8px;
}

.question-nav-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.question-nav-swatch {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background: #fff;
}

.question-nav-swatch-current {
  box-shadow: inset 0 0 0 3px rgba(15, 92, 122, 0.22);
}

.question-nav-swatch-answered {
  background: var(--accent-soft);
}

.question-nav-swatch-unanswered {
  background: var(--warning-soft);
}

.question-nav-swatch-flagged {
  background: linear-gradient(135deg, #fff 0 45%, var(--warning-soft) 45% 100%);
}

.status-pill,
.status-answered,
.status-correct,
.status-incorrect,
.status-partial,
.status-unanswered,
.status-short-answer {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.status-pill,
.status-answered,
.status-short-answer {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.status-correct {
  background: var(--success-soft);
  color: var(--success);
}

.status-partial {
  background: #e7eef9;
  color: #305d96;
}

.status-incorrect {
  background: var(--danger-soft);
  color: var(--danger);
}

.status-unanswered {
  background: var(--warning-soft);
  color: var(--warning);
}

.score-panel {
  display: grid;
  gap: 18px;
}

.marking-guide {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  border: 1px solid #cfdbe4;
  border-radius: 14px;
  background: #f3f8fb;
}

.marking-guide h4,
.marking-guide p {
  margin-bottom: 0;
}

.error-banner {
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--danger-soft);
  color: var(--danger);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 720px) {
  .test-layout {
    grid-template-columns: 1fr;
  }

  .site-shell {
    padding: 16px 12px 36px;
  }

  .site-header {
    gap: 16px;
    margin-bottom: 16px;
  }

  .site-header h1 {
    margin-bottom: 8px;
    font-size: clamp(1.6rem, 7vw, 2.25rem);
    line-height: 1.1;
  }

  .site-header-test .page-intro {
    display: none;
  }

  .section-heading,
  .progress-row,
  .question-meta-row,
  .test-card-header,
  .button-row-spread {
    align-items: flex-start;
    flex-direction: column;
  }

  .progress-panel {
    position: static;
    padding: 16px;
  }

  .progress-row {
    gap: 10px;
  }

  .progress-copy {
    gap: 2px;
  }

  .progress-copy strong {
    font-size: 1rem;
  }

  .progress-copy span {
    font-size: 0.95rem;
  }

  .progress-bar {
    margin-top: 12px;
  }

  .autosave-note {
    margin-top: 8px;
    font-size: 0.95rem;
  }

  .question-nav-panel {
    position: static;
  }

  .question-nav-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .button,
  .button-row .button,
  .button-row a {
    width: 100%;
  }

  .button-row,
  .review-badges,
  .status-strip,
  .score-meta,
  .question-meta-badges {
    width: 100%;
  }

  .status-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: 8px;
  }

  .status-card {
    min-width: 0;
    padding: 10px;
    border-radius: 10px;
  }

  .status-card strong {
    display: block;
    font-size: 1rem;
    line-height: 1.2;
  }

  .status-label {
    margin-bottom: 2px;
    font-size: 0.75rem;
    line-height: 1.2;
  }
}

@media print {
  @page {
    margin: 12mm;
  }

  body.results-page {
    min-height: auto;
    background: #fff;
    color: #000;
  }

  body.results-page .site-shell {
    max-width: none;
    padding: 0;
  }

  body.results-page .skip-link,
  body.results-page .visually-hidden,
  body.results-page .page-results .button-row {
    display: none !important;
  }

  body.results-page .site-header,
  body.results-page .site-header-tight {
    margin-bottom: 12pt;
  }

  body.results-page .page-results {
    display: block;
  }

  body.results-page .page-results .panel,
  body.results-page .page-results .result-card,
  body.results-page .page-results .status-card,
  body.results-page .page-results .marking-guide {
    box-shadow: none;
    background: #fff;
  }

  body.results-page .page-results .panel,
  body.results-page .page-results .result-card,
  body.results-page .page-results .status-card,
  body.results-page .page-results .marking-guide,
  body.results-page .page-results .pill,
  body.results-page .page-results .status-correct,
  body.results-page .page-results .status-incorrect,
  body.results-page .page-results .status-partial,
  body.results-page .page-results .status-unanswered,
  body.results-page .page-results .status-short-answer {
    border-color: #999;
    color: #000;
  }

  body.results-page .page-results .panel {
    margin-bottom: 12pt;
    padding: 14pt;
  }

  body.results-page .page-results .panel-spacious,
  body.results-page .page-results .result-card {
    padding: 12pt;
  }

  body.results-page .page-results .score-panel {
    gap: 10pt;
    break-inside: avoid-page;
    page-break-inside: avoid;
  }

  body.results-page .page-results .score-meta {
    justify-content: flex-start;
    gap: 8pt;
  }

  body.results-page .page-results .status-card {
    min-width: 90pt;
    padding: 8pt 10pt;
  }

  body.results-page .page-results .result-card,
  body.results-page .page-results .marking-guide {
    break-inside: avoid-page;
    page-break-inside: avoid;
  }

  body.results-page .page-results .question-meta-row,
  body.results-page .page-results .section-heading {
    align-items: flex-start;
  }

  body.results-page .page-results .question-meta-badges {
    justify-content: flex-start;
  }

  body.results-page h1,
  body.results-page .page-results #score-heading {
    color: #000;
  }

  body.results-page h1 {
    margin-bottom: 6pt;
    font-size: 24pt;
  }

  body.results-page .page-results #score-heading {
    font-size: 21pt;
  }

  body.results-page .eyebrow,
  body.results-page .page-intro,
  body.results-page .page-results .section-heading p,
  body.results-page .page-results .helper-text,
  body.results-page .page-results .question-type,
  body.results-page .page-results .status-label {
    color: #333;
  }

  body.results-page a {
    text-decoration: none;
  }
}