/*-- scss:defaults --*/
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Source+Serif+4:wght@400;600;700&display=swap');

$font-family-sans-serif: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif !default;
$font-family-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif !default;
$font-size-base: 1.0625rem !default;
$line-height-base: 1.75 !default;

$life-green: #15803d !default;
$life-accent: #16a34a !default;
$deep-navy: #0A2540 !default;
$mid-slate: #475569 !default;
$light-slate: #e2e8f0 !default;
$warm-neutral: #f8fafc !default;
$soft-green: #f0fdf4 !default;
$clinical-white: #ffffff !default;
$warning-orange: #f97316 !default;
$critical-rose: #e11d48 !default;
$info-sky: #0ea5e9 !default;

$link-color: $life-green !default;
$body-color: $deep-navy !default;
$body-bg: $clinical-white !default;
$sidebar-bg: $warm-neutral !default;
$code-bg: $warm-neutral !default;
$code-color: $mid-slate !default;

/*-- scss:rules --*/
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
}

html { scroll-behavior: smooth; }
.quarto-container { max-width: 1200px; }
#quarto-content { max-width: 850px; padding: 2.5rem 1.5rem; }
@media (max-width: 768px) { #quarto-content { padding: 1.5rem 1rem; } }

h1, h2, h3, h4, h5, h6 {
  font-family: $font-family-sans-serif;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: $deep-navy;
  letter-spacing: 0;
}
h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-top: 0;
  border-bottom: 3px solid $life-green;
  padding-bottom: 0.875rem;
  margin-bottom: 2rem;
}
h2 {
  font-size: 1.875rem;
  border-bottom: 2px solid $light-slate;
  padding-bottom: 0.625rem;
}
h3 { font-size: 1.45rem; }
p { margin-bottom: 1.25rem; line-height: 1.8; color: $deep-navy; }
p, li, .quarto-title-block, .quarto-title-meta {
  overflow-wrap: anywhere;
}
a { color: $link-color; text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { color: darken($life-green, 8%); border-bottom-color: lighten($life-green, 35%); }
a[href^="http"]:not([href*="lifesciencesaihandbook.com"])::after {
  content: " ↗";
  font-size: 0.875em;
  color: $mid-slate;
  opacity: 0.6;
}

.sidebar { background-color: $sidebar-bg; border-right: 1px solid $light-slate; }
.sidebar-item a, #quarto-sidebar .sidebar-link { border-left: 3px solid transparent; }
#quarto-sidebar .sidebar-link.active,
#quarto-sidebar .sidebar-link.active .chapter-title {
  font-weight: 700 !important;
  color: $deep-navy !important;
  border-left-color: $life-green;
}

.navbar { border-bottom: 1px solid $light-slate; box-shadow: 0 1px 3px rgba(10, 37, 64, 0.05); }
.navbar-brand img { max-height: 36px; }

.hero-panel {
  border: 2px solid $life-green;
  background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
  padding: 2.75rem 3rem;
  margin: 2rem auto 3rem auto;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(21, 128, 61, 0.08);
}
.hero-panel h1 {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0.75rem;
  color: $deep-navy;
}
.hero-kicker {
  color: $life-green;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}
.hero-subtitle {
  color: $mid-slate;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.hero-copy { max-width: 760px; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.hero-actions a {
  display: inline-block;
  padding: 0.72rem 1rem;
  border-radius: 6px;
  border: 1px solid $life-green;
  font-weight: 700;
  color: $life-green;
  background: #ffffff;
}
.hero-actions a:first-child { background: $life-green; color: #ffffff; }

.quick-read {
  border: 2px solid $life-green;
  background: $soft-green;
  border-radius: 8px;
  padding: 1.5rem 1.75rem;
  margin: 1rem 0 2rem 0;
}

.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 1rem 0 2rem 0;
}
.part-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0 1.5rem 0;
}
.part-strip div {
  border: 1px solid #bbf7d0;
  background: #ffffff;
  border-radius: 8px;
  padding: 0.85rem;
}
.part-strip strong {
  display: block;
  color: $life-green;
  font-size: 0.82rem;
  margin-bottom: 0.25rem;
}
.part-strip span {
  display: block;
  color: $deep-navy;
  font-weight: 700;
  line-height: 1.35;
}
.series-card {
  border-radius: 8px;
  padding: 1.35rem 1.5rem;
  display: flex;
  min-height: 245px;
  flex-direction: column;
  background: #ffffff;
}
.series-card h3 { margin-top: 0; font-size: 1.15rem; }
.series-card p:last-child { margin-top: auto; margin-bottom: 0; font-weight: 700; }
.series-card.physician { border: 2px solid #0FB5BA; background: #f0fdfa; }
.series-card.public { border: 2px solid #2563eb; background: #eff6ff; }
.series-card.biosecurity { border: 2px solid #c9a961; background: #fef9f3; }
.series-card.life { border: 2px solid $life-green; background: $soft-green; }

.demonstrated, section:has(> h2#sec-demonstrated) {
  border-left: 4px solid $life-green;
  padding-left: 1rem;
}
.theoretical, section:has(> h2#sec-theoretical) {
  border-left: 4px solid $info-sky;
  padding-left: 1rem;
}
.beyond, section:has(> h2#sec-beyond-current-capabilities) {
  border-left: 4px solid $warning-orange;
  padding-left: 1rem;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
table th {
  background: $soft-green;
  color: $deep-navy;
  font-weight: 700;
  border-bottom: 2px solid $life-green;
}
table td, table th {
  padding: 0.85rem;
  border-bottom: 1px solid $light-slate;
  vertical-align: top;
}

.callout {
  border-radius: 8px;
  border-left-width: 4px;
}
.callout-note { border-left-color: $life-green; }
.callout-tip { border-left-color: $info-sky; }

.footer-series-row {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.88rem;
  color: #64748b;
}
.footer-series-row a {
  color: #475569;
  border-bottom: 1px solid #cbd5e1;
  margin: 0 0.3rem;
}

@media (max-width: 768px) {
  .quarto-container,
  .page-columns,
  main.content,
  #quarto-content {
    max-width: 100%;
    min-width: 0;
  }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  .hero-panel { padding: 1.75rem 1.25rem; }
  .series-card { min-height: auto; }
}