/* Structural Boot Camp. One stylesheet, no inline styles (CSP style-src 'self'). */
:root {
  --ink: #142a38;
  --ink-soft: #3d5463;
  --navy: #12374f;
  --navy-deep: #0b2536;
  --mint: #8ae1c0;
  --teal: #0f6b5c;
  --paper: #faf8f3;
  --card: #ffffff;
  --line: #dcd8cd;
  --wash: #edf3f2;
  --amber: #7a4b00;
  --amber-wash: #fbf1df;
  --radius: 10px;
  --wrap: 72rem;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1.0625rem/1.6 var(--sans); }
img, svg { max-width: 100%; height: auto; }
a { color: var(--teal); text-underline-offset: 0.18em; }
a:hover { color: var(--navy); }
:focus-visible { outline: 3px solid #1c63b7; outline-offset: 2px; border-radius: 3px; }
main:focus { outline: none; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; color: var(--navy); margin: 0 0 0.6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); margin-top: 1.6em; }
h3 { font-size: 1.2rem; }
p, ul, ol { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1rem; }
@media (min-width: 48rem) { .wrap { padding: 0 2rem; } }

.skip-link { position: absolute; left: 1rem; top: -4rem; background: var(--navy); color: #fff; padding: 0.6rem 1rem; border-radius: 0 0 6px 6px; z-index: 10; }
.skip-link:focus { top: 0; }

/* Header */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1.5rem; padding-top: 0.75rem; padding-bottom: 0.75rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--navy); text-decoration: none; font-family: var(--serif); font-weight: 700; font-size: 1.15rem; line-height: 1.15; }
.brand small { display: block; font-family: var(--sans); font-weight: 400; font-size: 0.78rem; color: var(--ink-soft); }
.site-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
.site-nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; padding: 0.35rem 0; border-bottom: 2px solid transparent; }
.site-nav a:hover { border-bottom-color: var(--line); }
.site-nav a[aria-current] { border-bottom-color: var(--teal); color: var(--navy); font-weight: 600; }

.independence { background: var(--wash); border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.independence p { margin: 0; padding: 0.55rem 0; color: var(--ink-soft); }
.independence strong { color: var(--ink); }

/* Hero (hub only) */
.hero { background: var(--navy-deep); background-image: radial-gradient(ellipse at 85% 0%, rgba(138, 225, 192, 0.16), transparent 55%), linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 70%); color: #e8f1f4; padding: 3.5rem 0 3rem; }
.hero h1 { color: #fff; max-width: 18ch; }
.hero .lede { color: #cfe0e6; max-width: 40rem; font-size: 1.15rem; }
.hero .eyebrow { color: var(--mint); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; padding: 0; margin: 1.5rem 0 0; list-style: none; font-size: 0.95rem; color: #cfe0e6; }
.hero-facts li::before { content: ""; display: inline-block; width: 0.5rem; height: 0.5rem; margin-right: 0.5rem; border-radius: 50%; background: var(--mint); }

.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; font-weight: 700; color: var(--teal); margin-bottom: 0.6rem; }
.lede { font-size: 1.1rem; color: var(--ink-soft); max-width: 44rem; }
.page-head { padding: 2.75rem 0 1.5rem; border-bottom: 1px solid var(--line); background: var(--card); }
.section { padding: 2.5rem 0; }
.section > .wrap > h2:first-child { margin-top: 0; }

/* Module cards */
.module-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); padding: 0; margin: 0; list-style: none; }
.module-card { position: relative; display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem 1.25rem 1.1rem; transition: border-color 0.15s, box-shadow 0.15s; }
.module-card:hover { border-color: var(--teal); box-shadow: 0 6px 20px rgba(18, 55, 79, 0.08); }
.module-card h3 { margin-bottom: 0.35rem; }
.module-card h3 a { color: var(--navy); text-decoration: none; }
.module-card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius); }
.module-card p { color: var(--ink-soft); font-size: 0.95rem; }
.module-card .devices { margin-top: auto; font-size: 0.85rem; color: var(--ink-soft); }
.module-card .number { font-family: var(--serif); color: var(--teal); font-weight: 700; font-size: 0.9rem; }
.module-card.external { background: var(--wash); }

.status { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; padding: 0.2rem 0.55rem; border-radius: 999px; border: 1px solid currentColor; margin-bottom: 0.75rem; align-self: flex-start; }
.status-planned, .status-draft, .status-in-review { color: var(--amber); background: var(--amber-wash); }
.status-published { color: var(--teal); background: var(--wash); }

/* Content blocks */
.two-col { display: grid; gap: 2rem; }
@media (min-width: 60rem) { .two-col { grid-template-columns: 2fr 1fr; } }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem 1.4rem; }
.panel h2, .panel h3 { margin-top: 0; }
.panel.notice { border-left: 4px solid var(--amber); }
.panel.ok { border-left: 4px solid var(--teal); }
.objectives { padding-left: 1.25rem; }
.objectives li { margin-bottom: 0.5rem; }
.device-list { list-style: none; padding: 0; }
.device-list li { padding: 0.5rem 0; border-bottom: 1px solid var(--line); }
.device-list li:last-child { border-bottom: 0; }
.device-list span { display: block; font-size: 0.85rem; color: var(--ink-soft); }
.plan-list { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); padding: 0; list-style: none; }
.plan-list li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.9rem 1rem; }
.plan-list strong { display: block; color: var(--navy); }
.plan-list span { font-size: 0.9rem; color: var(--ink-soft); }
.state-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; background: var(--card); }
.state-table th, .state-table td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.state-table th { color: var(--navy); }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.table-scroll:focus-visible { outline-offset: 0; }

/* Policy pages */
.prose { max-width: 46rem; }
.prose section { margin-bottom: 2rem; }
.prose h2 { font-size: 1.35rem; margin-top: 0; }
.draft-flag { background: var(--amber-wash); color: var(--amber); border: 1px solid #e7c98f; border-radius: var(--radius); padding: 0.75rem 1rem; font-size: 0.95rem; }
.revised { font-size: 0.9rem; color: var(--ink-soft); }
.policy-layout { display: grid; gap: 2rem; }
@media (min-width: 60rem) { .policy-layout { grid-template-columns: 14rem 1fr; } }
.policy-nav ul { list-style: none; padding: 0; margin: 0; position: sticky; top: 1rem; }
.policy-nav a { display: block; padding: 0.35rem 0; color: var(--ink-soft); text-decoration: none; }
.policy-nav a[aria-current="page"] { color: var(--navy); font-weight: 700; }

/* Teaching pages */
.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; }
.module-nav { background: var(--card); border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.module-nav ul { display: flex; gap: 0.25rem 1.25rem; list-style: none; margin: 0; padding: 0.5rem 0; overflow-x: auto; scrollbar-width: thin; }
.module-nav li { flex: none; }
.module-nav a { display: inline-block; padding: 0.3rem 0; color: var(--ink-soft); text-decoration: none; border-bottom: 2px solid transparent; }
.module-nav a:hover { color: var(--navy); border-bottom-color: var(--line); }
.module-nav a[aria-current="page"] { color: var(--navy); font-weight: 700; border-bottom-color: var(--teal); }
.draft-banner { background: var(--amber-wash); border-bottom: 1px solid #e7c98f; color: var(--amber); font-size: 0.92rem; }
.draft-banner p { margin: 0; padding: 0.55rem 0; }
.toc { columns: 2 16rem; column-gap: 2rem; padding-left: 1.25rem; margin-bottom: 2rem; }
.toc li { break-inside: avoid; padding: 0.15rem 0; }
.stage { border-top: 1px solid var(--line); padding: 2rem 0 0.5rem; max-width: 52rem; }
.stage h2 { margin-top: 0; }
.stage h3 { margin-top: 1.4em; font-size: 1.05rem; }
.actions { padding-left: 1.25rem; }
.actions li { margin-bottom: 0.6rem; }
.pairs { margin: 0 0 1em; }
.pairs > div { display: grid; gap: 0.15rem 1rem; padding: 0.45rem 0; border-bottom: 1px solid var(--line); }
@media (min-width: 40rem) { .pairs > div { grid-template-columns: 9rem 1fr; } }
.pairs dt { font-weight: 700; color: var(--navy); }
.pairs dd { margin: 0; }
.device-notes { padding-left: 1.25rem; }
.readback { margin: 0 0 1em; padding: 0.75rem 1rem; background: var(--wash); border-left: 4px solid var(--teal); border-radius: 0 var(--radius) var(--radius) 0; }
.readback p { margin: 0; }
.cite { font-size: 0.88rem; color: var(--ink-soft); }
.cite span { font-weight: 700; }
.lesson, .evidence { margin-bottom: 1rem; max-width: 52rem; }
.lesson h3, .evidence h3 { margin-top: 0; }
.not-for-credit { background: var(--wash); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.75rem 1rem; max-width: 52rem; }
.checkpoint { border-top: 1px solid var(--line); padding: 2rem 0 0.5rem; max-width: 52rem; }
.transition { color: var(--ink-soft); }

/* Quiz */
.button { display: inline-flex; align-items: center; gap: 0.4rem; min-height: 2.75rem; padding: 0.5rem 1rem; border: 2px solid var(--navy); border-radius: 8px; background: var(--navy); color: #fff; font: inherit; font-size: 0.95rem; font-weight: 600; cursor: pointer; }
.button:hover { background: var(--navy-deep); }
.button.secondary { background: var(--card); color: var(--navy); }
.button.secondary:hover { background: var(--wash); }
.button[disabled] { opacity: 0.45; cursor: not-allowed; }
.button .count { font-weight: 400; opacity: 0.85; }
.button-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1rem; }
.quiz-app { max-width: 52rem; margin-top: 1rem; }
.quiz-setup { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.25rem 0.5rem; margin-bottom: 1.25rem; }
.setup-row h3 { font-family: var(--sans); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); margin: 0 0 0.5rem; }
.setup-row p { font-size: 0.95rem; }
.quiz-panel progress { width: 100%; height: 0.5rem; margin-bottom: 1rem; accent-color: var(--teal); }
.question-card { margin-bottom: 1.5rem; }
.question-card fieldset { border: 0; margin: 0 0 1rem; padding: 0; min-width: 0; }
.question-card legend { padding: 0; margin-bottom: 0.75rem; }
.question-prompt { font-family: var(--sans); font-size: 1.1rem; line-height: 1.45; color: var(--ink); margin: 0; }
.question-meta { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 0.5rem; }
.option { display: flex; gap: 0.75rem; align-items: flex-start; padding: 0.7rem 0.85rem; margin-bottom: 0.5rem; border: 1px solid var(--line); border-radius: 8px; background: var(--card); cursor: pointer; }
.option:hover { border-color: var(--teal); }
.option input { margin: 0.3rem 0 0; flex: none; accent-color: var(--teal); }
.option .letter { font-weight: 700; color: var(--navy); flex: none; min-width: 1.1rem; }
.option.is-best { border: 2px solid var(--teal); background: var(--wash); }
.option.is-missed { border: 2px solid #9b2c2c; background: #fbeeee; }
.feedback { border-left: 4px solid var(--teal); padding: 0.25rem 0 0.25rem 1rem; margin-top: 1rem; }
.feedback-title { font-weight: 700; color: var(--navy); }
.feedback details { margin-bottom: 0.75rem; }
.feedback summary { cursor: pointer; color: var(--teal); font-weight: 600; }
.review-note, .report-link { font-size: 0.9rem; color: var(--ink-soft); }
.case-score { font-weight: 700; color: var(--navy); }

/* Footer */
.site-footer { background: var(--navy-deep); color: #c7d7de; margin-top: 3rem; font-size: 0.92rem; }
.site-footer a { color: var(--mint); }
.footer-grid { display: grid; gap: 1.5rem; padding-top: 2.25rem; padding-bottom: 1.5rem; }
@media (min-width: 52rem) { .footer-grid { grid-template-columns: 2fr 1fr; } }
.footer-name { font-family: var(--serif); font-weight: 700; color: #fff; font-size: 1.1rem; }
.footer-links { list-style: none; padding: 0; margin: 0; columns: 2; column-gap: 1.5rem; }
.footer-links li { padding: 0.2rem 0; break-inside: avoid; }
.footer-base { border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 1rem; padding-bottom: 1.5rem; }
.footer-base p { margin: 0; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media print { .site-header nav, .independence, .skip-link { display: none; } body { background: #fff; } }