:root {
  --ink: #1a2233;
  --ink-soft: #3c4a5e;
  --bg: #ffffff;
  --bg-subtle: #f4f6f9;
  --border: #d7dde5;
  --accent: #1f3a5f;
  --accent-contrast: #ffffff;
  --good-bg: #eaf5ee;
  --good-border: #2f7a4d;
  --bad-bg: #fbeceb;
  --bad-border: #a3352c;
  --focus-ring: #0b5fff;
  --radius: 8px;
  --max-width: 50rem;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-subtle);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

a { color: var(--accent); }

button, input, label, legend {
  font-family: inherit;
  font-size: 1rem;
}

input[type="radio"], input[type="checkbox"] {
  accent-color: var(--accent);
}

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.app-header {
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.9rem 1.25rem;
}

.app-header .brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
  font-size: 1.05rem;
}

.app-header .subbrand {
  margin: 0.1rem 0 0;
  font-size: 0.85rem;
  opacity: 0.85;
}

.progress-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.25rem 0;
}

.progress-track {
  background: var(--border);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}

.progress-bar {
  background: var(--accent);
  height: 100%;
  width: 0%;
  transition: width 0.2s ease;
}

.progress-label {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0.4rem 0 0;
}

.step-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  max-width: var(--max-width);
  margin: 0.6rem auto 0;
  padding: 0 1.25rem;
}

.nav-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 0;
  cursor: pointer;
}

.nav-dot:disabled { cursor: not-allowed; opacity: 0.5; }
.nav-dot--visited { background: var(--border); }
.nav-dot--active { background: var(--accent); border-color: var(--accent); }

main#step-content {
  max-width: var(--max-width);
  margin: 1.25rem auto;
  padding: 1.5rem 1.25rem 2rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

main#step-content h1 {
  font-size: 1.35rem;
  margin-top: 0;
}

.lede { font-size: 1.05rem; color: var(--ink-soft); }

ul { padding-left: 1.3rem; }
li { margin-bottom: 0.3rem; }

code {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.05rem 0.35rem;
  font-size: 0.92em;
}

.compare-table {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .compare-table { grid-template-columns: 1fr 1fr; }
}

.compare-col {
  border-radius: var(--radius);
  padding: 1rem;
  border: 1px solid var(--border);
}

.compare-good { background: var(--good-bg); border-color: var(--good-border); }
.compare-bad { background: var(--bad-bg); border-color: var(--bad-border); }
.compare-col h3 { margin-top: 0; }

.callout {
  background: #eef4fb;
  border: 1px solid #9eb7d2;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  margin: 1rem 0;
}

.callout--warning {
  background: #fff7df;
  border-color: #d39b21;
  border-left-color: #b47a00;
}

.callout--danger {
  background: var(--bad-bg);
  border-color: var(--bad-border);
  border-left-color: var(--bad-border);
}

.scenario-prompt { font-style: italic; }
.scenario-notice { color: var(--ink-soft); font-size: 0.95rem; }
.scenario-form { margin-top: 1rem; }
.scenario-fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  margin: 0 0 1rem;
}
.scenario-fieldset legend { font-weight: 600; padding: 0 0.3rem; }
.scenario-option {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 0.65rem 0;
}
.scenario-option input { margin-top: 0.3rem; flex-shrink: 0; }
.scenario-option label { cursor: pointer; line-height: 1.45; }
.scenario-submit { margin-top: 0.2rem; }
.scenario-message, .scenario-result {
  margin-top: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius);
}
.scenario-message--error, .scenario-result--error {
  background: var(--bad-bg);
  border: 1px solid var(--bad-border);
}
.scenario-result--success {
  background: var(--good-bg);
  border: 1px solid var(--good-border);
}
.scenario-result-heading { font-weight: 700; margin-top: 0; }
.scenario-explanation { color: var(--ink-soft); }

.quiz-attempt-note {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.9rem;
}

.quiz-question {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  margin-bottom: 1rem;
}

.quiz-question legend {
  font-weight: 600;
  padding: 0 0.3rem;
}

.question-instruction { color: var(--ink-soft); margin: 0.2rem 0 0.6rem; font-size: 0.95rem; }
.quiz-option { display: flex; align-items: flex-start; gap: 0.5rem; margin: 0.4rem 0; }
.quiz-option input { margin-top: 0.3rem; }
.quiz-option label { cursor: pointer; line-height: 1.45; }

.quiz-explanation {
  margin-top: 0.6rem;
  padding: 0.6rem 0.8rem;
  background: var(--bad-bg);
  border-left: 3px solid var(--bad-border);
  border-radius: 4px;
}

.quiz-message { padding: 0.6rem 0.9rem; border-radius: var(--radius); font-weight: 600; }
.quiz-message--success { background: var(--good-bg); color: var(--good-border); }
.quiz-message--error { background: var(--bad-bg); color: var(--bad-border); }
.quiz-score { font-weight: 600; }

.form-field { margin-bottom: 1rem; }
.form-field label { display: block; font-weight: 600; margin-bottom: 0.25rem; }
.form-field input {
  width: 100%;
  max-width: 26rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.attestation-row { display: flex; align-items: flex-start; gap: 0.6rem; margin: 0.7rem 0; }
.attestation-row input { margin-top: 0.3rem; flex-shrink: 0; }
.attestation-row label { cursor: pointer; line-height: 1.45; }

.record-summary { display: grid; grid-template-columns: max-content 1fr; gap: 0.3rem 1rem; }
.record-summary dt { font-weight: 600; color: var(--ink-soft); }
.record-summary dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 480px) {
  .record-summary { grid-template-columns: 1fr; }
  .record-summary dd { margin-bottom: 0.5rem; }
}

.completion-actions { margin-top: 1.25rem; display: flex; gap: 0.6rem; flex-wrap: wrap; }
.completion-footnote { margin-top: 1.5rem; font-size: 0.9rem; color: var(--ink-soft); }
.print-only-note { display: none; }

.submission-status { margin-top: 1rem; font-size: 0.95rem; }
.submission-status--sent { color: var(--good-border); }
.submission-status--failed, .submission-status--not-configured { color: var(--bad-border); }

.btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-height: 2.65rem;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
}

.btn:hover { background: var(--bg-subtle); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
}

.btn-primary:hover { opacity: 0.92; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.app-controls {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 0 1.25rem;
  display: flex;
  justify-content: space-between;
}

.app-footer {
  max-width: var(--max-width);
  margin: 0 auto 2rem;
  padding: 0 1.25rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.noscript-warning {
  max-width: var(--max-width);
  margin: 1rem auto;
  padding: 0 1.25rem;
  color: var(--bad-border);
  font-weight: 600;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .app-header, .progress-wrap, .step-nav, .app-controls, .no-print { display: none !important; }
  body { background: #fff; }
  main#step-content { border: none; margin: 0; padding: 0; }
  .print-only-note { display: block; font-size: 0.85rem; color: var(--ink-soft); }
}