/* ============================================================
   Green Mountain Docs — Design System v1.1
   Loaded via _config.yml site-css. Layers over beautiful-jekyll.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600&family=DM+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Core tokens */
  --gmd-navy:        #1C2E40;
  --gmd-green:       #3A6B49;
  --gmd-green-dark:  #2F5A3C;  /* AA-safe text green — use for links & tag text */
  --gmd-green-light: #EAF2ED;
  --gmd-cream:       #F7F4EF;
  --gmd-white:       #FFFFFF;
  --gmd-slate:       #3D4A57;
  --gmd-muted:       #5F6773;  /* darkened from #6B7280 for AA on cream */
  --gmd-border:      #DDD8D0;
  --gmd-code-bg:     #EFE9E0;

  /* Semantic */
  --gmd-amber:    #B45309;  --gmd-amber-bg: #FEF3C7;
  --gmd-red:      #991B1B;  --gmd-red-bg:   #FEE2E2;
  --gmd-teal:     #0E7490;  --gmd-teal-bg:  #E0F2FE;

  /* Spacing scale — base 4px */
  --gmd-xs: 4px;  --gmd-sm: 8px;  --gmd-md: 16px;
  --gmd-lg: 24px; --gmd-xl: 48px; --gmd-2xl: 80px;

  /* Type */
  --gmd-display: 'Playfair Display', Georgia, serif;
  --gmd-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --gmd-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --gmd-radius: 8px;
  --gmd-measure: 68ch;
}

/* ── Base ────────────────────────────────────────────────── */

body {
  font-family: var(--gmd-body);
  font-size: 16px;
  line-height: 1.7;
  background: var(--gmd-cream);
  color: var(--gmd-slate);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gmd-green-dark); text-decoration: none; }
a:hover, a:focus { color: var(--gmd-green-dark); text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--gmd-green);
  outline-offset: 2px;
  border-radius: 2px;
}

strong, b { font-weight: 600; color: var(--gmd-navy); }

code, kbd, samp {
  font-family: var(--gmd-mono);
  font-size: 0.85em;
  background: var(--gmd-code-bg);
  color: var(--gmd-navy);
  padding: 0.15em 0.45em;
  border-radius: 4px;
}

pre {
  background: var(--gmd-navy);
  color: #C8D4DE;
  padding: 1.25rem 1.5rem;
  border-radius: var(--gmd-radius);
  overflow-x: auto;
  font-family: var(--gmd-mono);
  font-size: 0.85rem;
  line-height: 1.6;
}
pre code { background: none; padding: 0; color: inherit; }

hr { border: 0; border-top: 1px solid var(--gmd-border); margin: var(--gmd-xl) 0; }

/* ── Navbar (overrides beautiful-jekyll) ─────────────────── */

.navbar-custom {
  background: var(--gmd-navy) !important;
  border-bottom: 0 !important;
  box-shadow: none;
  padding: 0.65rem 0;
}
.navbar-custom .navbar-brand {
  font-family: var(--gmd-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: #FFFFFF !important;
  letter-spacing: 0;
}
.navbar-custom .navbar-nav .nav-link {
  font-family: var(--gmd-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-transform: none;
  color: #A8BCC8 !important;
  padding: 0.45rem 0.85rem;
  border-radius: 4px;
  transition: 0.15s;
}
.navbar-custom .navbar-nav .nav-link:hover,
.navbar-custom .navbar-nav .nav-link:focus {
  color: #FFFFFF !important;
  background: rgba(255,255,255,0.08);
}
.navbar-custom .navbar-nav .nav-item.active .nav-link,
.navbar-custom .navbar-nav .nav-link.active {
  color: #FFFFFF !important;
  background: rgba(255,255,255,0.1);
  box-shadow: inset 0 -2px 0 var(--gmd-green);
}
.navbar-custom .navbar-toggler { border-color: rgba(255,255,255,0.3); }
.navbar-custom .dropdown-menu {
  background: var(--gmd-navy);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
}
.navbar-custom .dropdown-menu .dropdown-item { color: #A8BCC8; font-size: 0.85rem; }
.navbar-custom .dropdown-menu .dropdown-item:hover { background: rgba(255,255,255,0.08); color: #fff; }

/* Hide beautiful-jekyll's default page header — layouts supply their own */
.gmd-layout .intro-header { display: none; }

/* ── Layout shells ───────────────────────────────────────── */

.gmd-wrap { max-width: 1080px; margin: 0 auto; padding: 0 2rem; }
.gmd-prose { max-width: var(--gmd-measure); }
.gmd-section { padding: var(--gmd-2xl) 0; }
.gmd-section + .gmd-section { padding-top: 0; }
.gmd-section--tight { padding: var(--gmd-xl) 0; }

/* ── Typography ──────────────────────────────────────────── */

.gmd h1, .gmd-hero h1, .gmd-pagehead h1 {
  font-family: var(--gmd-display);
  font-weight: 600;
  color: var(--gmd-navy);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.gmd-pagehead h1 { font-size: 2.25rem; margin-bottom: 0.75rem; }
.gmd h2 {
  font-family: var(--gmd-display);
  font-size: 1.85rem;
  font-weight: 600;
  color: var(--gmd-navy);
  line-height: 1.25;
  margin: var(--gmd-xl) 0 var(--gmd-md);
}
.gmd h2:first-child { margin-top: 0; }
.gmd h3 {
  font-family: var(--gmd-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--gmd-navy);
  margin-bottom: 0.4rem;
}
.gmd h4 {
  font-family: var(--gmd-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gmd-green-dark);
  margin: var(--gmd-lg) 0 0.5rem;
}
.gmd p { margin-bottom: 1rem; max-width: var(--gmd-measure); }
.gmd ul, .gmd ol { padding-left: 1.35rem; margin-bottom: 1rem; max-width: var(--gmd-measure); }
.gmd li { margin-bottom: 0.35rem; }

.gmd-eyebrow {
  font-family: var(--gmd-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gmd-green-dark);
  margin-bottom: 0.75rem;
}
.gmd-lede { font-size: 1.15rem; line-height: 1.65; color: var(--gmd-slate); max-width: 60ch; }
.gmd-meta { font-size: 0.85rem; color: var(--gmd-muted); }

/* ── Page header ─────────────────────────────────────────── */

.gmd-pagehead { padding: var(--gmd-xl) 0 0; }

/* ── Hero ────────────────────────────────────────────────── */

.gmd-hero { background: var(--gmd-navy); color: #C8D4DE; padding: 6rem 0 5.5rem; }
.gmd-hero .gmd-eyebrow { color: #7FA88C; }
.gmd-hero h1 { color: #FFFFFF; font-size: 2.75rem; max-width: 17ch; }
.gmd-hero p { color: #A8BCC8; font-size: 1.15rem; max-width: 52ch; margin: 1.25rem 0 2rem; }

/* ── Buttons ─────────────────────────────────────────────── */

.gmd-btn {
  display: inline-block;
  font-family: var(--gmd-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: 0.15s;
  cursor: pointer;
  margin: 0 0.5rem 0.5rem 0;
}
.gmd-btn:hover { text-decoration: none; }
.gmd-btn--primary { background: var(--gmd-green); color: #FFFFFF !important; }
.gmd-btn--primary:hover { background: var(--gmd-green-dark); color: #FFFFFF !important; }
.gmd-btn--ghost { border-color: rgba(255,255,255,0.3); color: #C8D4DE !important; background: transparent; }
.gmd-btn--ghost:hover { border-color: #FFFFFF; color: #FFFFFF !important; }
.gmd-btn--outline { border-color: var(--gmd-green); color: var(--gmd-green-dark) !important; background: transparent; }
.gmd-btn--outline:hover { background: var(--gmd-green-light); }
.gmd-textlink { font-size: 0.9rem; font-weight: 500; }

/* ── Metric strip ────────────────────────────────────────── */

.gmd-metrics {
  background: var(--gmd-white);
  border-top: 1px solid var(--gmd-border);
  border-bottom: 1px solid var(--gmd-border);
}
.gmd-metrics .gmd-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gmd-xl);
  padding-top: 3rem;
  padding-bottom: 3rem;
}
.gmd-metric .gmd-metric__num {
  font-family: var(--gmd-display);
  font-size: 3.25rem;
  font-weight: 600;
  color: var(--gmd-green-dark);
  line-height: 1;
}
.gmd-metric .gmd-metric__lbl { font-size: 0.95rem; color: var(--gmd-muted); margin-top: 0.5rem; }

/* ── Grid & cards ────────────────────────────────────────── */

.gmd-grid { display: grid; gap: var(--gmd-lg); }
.gmd-grid--2 { grid-template-columns: repeat(2, 1fr); }
.gmd-grid--3 { grid-template-columns: repeat(3, 1fr); }
.gmd-grid--4 { grid-template-columns: repeat(4, 1fr); }

.gmd-card {
  background: var(--gmd-white);
  border: 1px solid var(--gmd-border);
  border-radius: var(--gmd-radius);
  padding: 1.5rem;
  transition: 0.15s;
}
.gmd-card:hover { border-color: #C4BCB0; box-shadow: 0 2px 12px rgba(28,46,64,0.06); }
.gmd-card p { font-size: 0.92rem; margin-bottom: 1rem; }
.gmd-card__bestfor { font-size: 0.8rem; color: var(--gmd-muted); margin-bottom: 1rem; }

.gmd-tag {
  display: inline-block;
  background: var(--gmd-green-light);
  color: var(--gmd-green-dark);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.25em 0.7em;
  border-radius: 4px;
  margin: 0 0.3rem 0.4rem 0;
}

/* ── Article list ────────────────────────────────────────── */

.gmd-arts { border-top: 1px solid var(--gmd-border); margin-top: var(--gmd-lg); }
.gmd-art {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--gmd-border);
  align-items: baseline;
}
.gmd-art__date { font-family: var(--gmd-mono); font-size: 0.78rem; color: var(--gmd-muted); }
.gmd-art h3 { font-size: 1.05rem; margin-bottom: 0.15rem; }
.gmd-art p { font-size: 0.9rem; color: var(--gmd-muted); margin: 0; }

/* ── Roles / experience ──────────────────────────────────── */

.gmd-role { padding: 1.5rem 0; border-bottom: 1px solid var(--gmd-border); }
.gmd-role:first-of-type { border-top: 1px solid var(--gmd-border); }
.gmd-role__meta { font-size: 0.85rem; color: var(--gmd-muted); margin-bottom: 0.6rem; }
.gmd-role ul { font-size: 0.92rem; }

/* ── Steps ───────────────────────────────────────────────── */

.gmd-step__n {
  font-family: var(--gmd-display);
  font-size: 1.6rem;
  color: var(--gmd-green);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.gmd-step h3 { font-size: 0.95rem; }
.gmd-step p { font-size: 0.88rem; color: var(--gmd-muted); }

/* ── Callouts ────────────────────────────────────────────── */

.gmd-callout {
  border-radius: 6px;
  padding: 0.9rem 1.15rem;
  margin: var(--gmd-lg) 0;
  font-size: 0.9rem;
  max-width: var(--gmd-measure);
}
.gmd-callout p { margin: 0; }
.gmd-callout--note      { background: var(--gmd-teal-bg);  border-left: 3px solid var(--gmd-teal);  color: #0C4A6E; }
.gmd-callout--tip       { background: var(--gmd-green-light); border-left: 3px solid var(--gmd-green); color: #14532D; }
.gmd-callout--important { background: var(--gmd-amber-bg); border-left: 3px solid var(--gmd-amber); color: #78350F; }
.gmd-callout--warning   { background: var(--gmd-red-bg);   border-left: 3px solid var(--gmd-red);   color: var(--gmd-red); }
.gmd-callout a { color: inherit; text-decoration: underline; }

/* ── Disclosure ──────────────────────────────────────────── */

.gmd-details {
  border: 1px solid var(--gmd-border);
  border-radius: var(--gmd-radius);
  background: var(--gmd-white);
  margin-top: var(--gmd-lg);
  max-width: 820px;
}
.gmd-details summary {
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gmd-navy);
  list-style: none;
}
.gmd-details summary::-webkit-details-marker { display: none; }
.gmd-details summary::before { content: "+"; color: var(--gmd-green); font-weight: 700; margin-right: 0.6rem; }
.gmd-details[open] summary::before { content: "\2013"; }
.gmd-details__body { padding: 0 1.25rem 1.25rem; font-size: 0.9rem; }
.gmd-details__body ul { padding-left: 1.2rem; margin: 0; }
.gmd-details__body li { margin-bottom: 0.3rem; }

.gmd-syllabus { columns: 2; column-gap: 2.5rem; font-size: 0.88rem; }
.gmd-syllabus h4 { margin-top: 1rem; break-after: avoid; }
.gmd-syllabus h4:first-child { margin-top: 0; }
.gmd-syllabus p { margin: 0 0 0.2rem; color: var(--gmd-muted); }

/* ── Tables ──────────────────────────────────────────────── */

.gmd table { width: 100%; border-collapse: collapse; font-size: 0.875rem; margin: var(--gmd-lg) 0; }
.gmd th {
  background: var(--gmd-navy);
  color: #C8D4DE;
  text-align: left;
  padding: 0.6rem 1rem;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}
.gmd td { padding: 0.6rem 1rem; border-bottom: 1px solid var(--gmd-border); vertical-align: top; }
.gmd tr:last-child td { border-bottom: none; }
.gmd tbody tr:nth-child(even) td { background: rgba(0,0,0,0.02); }

/* ── Forms ───────────────────────────────────────────────── */

.gmd-form {
  background: var(--gmd-white);
  border: 1px solid var(--gmd-border);
  border-radius: var(--gmd-radius);
  padding: 1.75rem;
}
.gmd-field { margin-bottom: 1.1rem; }
.gmd-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gmd-navy);
  margin-bottom: 0.35rem;
}
.gmd-field input,
.gmd-field select,
.gmd-field textarea {
  width: 100%;
  font-family: var(--gmd-body);
  font-size: 0.92rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--gmd-border);
  border-radius: 6px;
  background: var(--gmd-cream);
  color: var(--gmd-slate);
}
.gmd-field textarea { min-height: 120px; resize: vertical; }
.gmd-aside { font-size: 0.92rem; }
.gmd-aside dt {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gmd-green-dark);
  font-weight: 600;
  margin-top: 1.2rem;
}
.gmd-aside dt:first-child { margin-top: 0; }
.gmd-aside dd { margin: 0; }

.gmd-contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--gmd-xl);
  align-items: start;
}

/* ── CTA band ────────────────────────────────────────────── */

.gmd-cta { background: var(--gmd-green-light); border-top: 1px solid #D3E3D8; margin-top: var(--gmd-2xl); }
.gmd-cta .gmd-wrap { padding: 3.5rem 2rem; text-align: center; }
.gmd-cta h2 { margin: 0 0 0.5rem; }
.gmd-cta p { max-width: 48ch; margin: 0 auto 1.5rem; }

/* ── Footer (overrides beautiful-jekyll) ─────────────────── */

footer.footer-custom, footer {
  background: var(--gmd-navy) !important;
  color: #8099A8 !important;
  border-top: 0 !important;
  font-size: 0.85rem;
}
footer a, footer .footer-custom a { color: #A8BCC8 !important; }
footer a:hover { color: #FFFFFF !important; }
footer .social-network-links a { color: #A8BCC8 !important; }
footer .theme-by { opacity: 0.55; font-size: 0.75rem; }

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 900px) {
  .gmd-grid--2, .gmd-grid--3, .gmd-grid--4,
  .gmd-contact-grid,
  .gmd-metrics .gmd-wrap { grid-template-columns: 1fr; }
  .gmd-syllabus { columns: 1; }
  .gmd-hero { padding: 3.5rem 0; }
  .gmd-hero h1 { font-size: 2.1rem; }
  .gmd-pagehead h1 { font-size: 1.9rem; }
  .gmd h2 { font-size: 1.5rem; }
  .gmd-art { grid-template-columns: 1fr; gap: 0.25rem; }
  .gmd-wrap { padding: 0 1.25rem; }
  .gmd-section { padding: var(--gmd-xl) 0; }
  .gmd-metric .gmd-metric__num { font-size: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

@media print {
  .navbar-custom, footer, .gmd-cta { display: none; }
  body { background: #fff; }
}