:root {
  --bg: #0b0f14;
  --panel: #111826;
  --panel2: #0f1724;
  --text: #eaf0ff;
  --muted: #b8c4e6;
  --border: #23304a;
  --accent: #7dd3fc;
  --accent2: #a78bfa;
  --good: #86efac;
  --warn: #fda4af;

  --radius: 18px;
  --shadow: 0 12px 28px rgba(0,0,0,.35);
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% -10%, rgba(125,211,252,.18), transparent),
              radial-gradient(1000px 700px at 90% 0%, rgba(167,139,250,.16), transparent),
              var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

strong {
  font-weight: 700;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 18px;
  top: 18px;
  width: auto;
  height: auto;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  z-index: 9999;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,15,20,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(35,48,74,.7);
}

.header-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(125,211,252,.22), rgba(167,139,250,.22));
  border: 1px solid rgba(125,211,252,.35);
  font-weight: 800;
}

.brand-title {
  font-weight: 800;
}

.brand-subtitle {
  color: var(--muted);
  font-size: .9rem;
}

.nav {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--text);
  opacity: .92;
  font-weight: 600;
  font-size: .95rem;
}

.nav a:hover {
  opacity: 1;
}

.toggle-btn {
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid rgba(125,211,252,.4);
  background: rgba(125,211,252,.08);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: all 0.2s ease;
}

.toggle-btn:hover {
  background: rgba(125,211,252,.12);
  border-color: rgba(125,211,252,.6);
}

.toggle-icon {
  display: inline-block;
  font-size: 1.1em;
}

.hero {
  padding: 36px 0 10px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

h1 {
  font-size: clamp(1.9rem, 2.6vw, 3rem);
  line-height: 1.1;
  margin: 0 0 12px;
}

h2 {
  font-size: clamp(1.5rem, 2vw, 2.1rem);
  margin: 0 0 12px;
}

h3 {
  margin: 0 0 8px;
}

h4 {
  margin: 0 0 8px;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 72ch;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 14px 0 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(35,48,74,.9);
  background: rgba(17,24,38,.75);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.button:hover {
  filter: brightness(1.05);
  text-decoration: none;
}

.button.primary {
  border: 1px solid rgba(125,211,252,.5);
  background: linear-gradient(135deg, rgba(125,211,252,.14), rgba(167,139,250,.12));
}

.button:focus {
  outline: 3px solid rgba(125,211,252,.35);
  outline-offset: 2px;
}

.callouts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

@media (max-width: 900px) {
  .callouts {
    grid-template-columns: 1fr;
  }
}

.callout {
  background: rgba(17,24,38,.65);
  border: 1px solid rgba(35,48,74,.85);
  border-radius: var(--radius);
  padding: 12px 12px;
}

.callout-title {
  font-weight: 800;
  margin-bottom: 6px;
}

.callout-body {
  color: var(--muted);
}

.hero-card {
  background: rgba(17,24,38,.72);
  border: 1px solid rgba(35,48,74,.92);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 10px 0 12px;
}

.checklist li {
  display: flex;
  gap: 10px;
  margin: 8px 0;
  color: var(--muted);
}

.checklist span {
  color: var(--good);
  font-weight: 900;
}

.note {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(253,164,175,.35);
  background: rgba(253,164,175,.06);
  color: var(--muted);
  font-size: .92rem;
}

.section {
  padding: 34px 0;
}

.section.alt {
  background: linear-gradient(180deg, rgba(15,23,36,.55), rgba(15,23,36,.18));
  border-top: 1px solid rgba(35,48,74,.35);
  border-bottom: 1px solid rgba(35,48,74,.35);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

@media (max-width: 900px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: rgba(17,24,38,.66);
  border: 1px solid rgba(35,48,74,.9);
  border-radius: var(--radius);
  padding: 14px;
}

.card.emphasis {
  border-color: rgba(125,211,252,.45);
  background: linear-gradient(135deg, rgba(125,211,252,.08), rgba(167,139,250,.07));
}

.card.tip {
  border-color: rgba(134,239,172,.35);
  background: rgba(134,239,172,.06);
}

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

.bullets {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.refs {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.divider {
  height: 1px;
  background: rgba(35,48,74,.75);
  margin: 18px 0;
}

.accordion {
  margin-top: 14px;
}

.accordion-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(35,48,74,.9);
  background: rgba(17,24,38,.62);
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
  text-align: left;
  margin-bottom: 10px;
  transition: all 0.2s ease;
}

.accordion-item:hover {
  filter: brightness(1.05);
}

.accordion-q {
  line-height: 1.25;
}

.accordion-icon {
  width: 26px;
  height: 26px;
  border-radius: 10px;
  border: 1px solid rgba(125,211,252,.45);
  display: grid;
  place-items: center;
  color: var(--accent);
  flex: 0 0 auto;
}

.accordion-panel {
  margin: -4px 0 12px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(35,48,74,.72);
  background: rgba(15,23,36,.45);
  color: var(--muted);
}

.print-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.site-footer {
  padding: 20px 0 0;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(35,48,74,.6);
  padding-top: 14px;
}

.footer-title {
  font-weight: 900;
}

.footer-right {
  text-align: right;
}

@media (max-width: 700px) {
  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-right {
    text-align: left;
  }
}

/* Clinician-only content visibility toggle */
body.show-clinician .clinician-only {
  display: block !important;
}

/* Print styles */
.print-only {
  display: none;
}

.codeblock {
  white-space: pre-wrap;
  word-break: break-word;
  background: rgba(15,23,36,.55);
  border: 1px solid rgba(35,48,74,.75);
  border-radius: 14px;
  padding: 12px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: .92rem;
  line-height: 1.45;
  margin: 10px 0 10px;
}

@media print {
  body {
    background: #fff;
    color: #000;
  }

  .site-header, .hero-actions, .nav, .callouts, .accordion, .tip, .site-footer, .print-actions {
    display: none !important;
  }

  .section.alt {
    background: none !important;
  }

  .card, .hero-card {
    box-shadow: none;
    background: #fff;
    border: 1px solid #ddd;
  }

  .print-only {
    display: block;
  }

  a {
    color: #000;
    text-decoration: none;
  }

  .clinician-only {
    display: none !important;
  }
}