/* Spec Kit landing page — GitHub Primer colors */

:root {
  /* GitHub Primer palette */
  --gh-blue: #0969da;
  --gh-green: #1a7f37;
  --gh-purple: #8250df;
  --gh-coral: #cf222e;
  --gh-orange: #bf8700;
  --gh-blue-subtle: #ddf4ff;
  --gh-green-subtle: #dafbe1;
  --gh-purple-subtle: #fbefff;
  --gh-coral-subtle: #ffebe9;
}

[data-bs-theme="dark"] {
  --gh-blue: #58a6ff;
  --gh-green: #3fb950;
  --gh-purple: #bc8cff;
  --gh-coral: #f85149;
  --gh-orange: #d29922;
  --gh-blue-subtle: #0d1d30;
  --gh-green-subtle: #0d1d14;
  --gh-purple-subtle: #1c0d2e;
  --gh-coral-subtle: #2d0f0d;
}

/* Override Bootstrap primary with GitHub blue */
body[data-layout="landing"] {
  --bs-primary: var(--gh-blue);
  --bs-primary-rgb: 9, 105, 218;
  --bs-link-color: var(--gh-blue);
  --bs-link-hover-color: var(--gh-blue);
}

[data-bs-theme="dark"] body[data-layout="landing"],
body[data-layout="landing"][data-bs-theme="dark"] {
  --bs-primary-rgb: 88, 166, 255;
}

/* Hero section */
.landing-hero {
  text-align: center;
  padding: 3rem 0 1.5rem;
}

.landing-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--gh-blue), var(--gh-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-hero p {
  font-size: 1.15rem;
  max-width: 640px;
  margin: 0 auto 1.5rem;
  opacity: 0.85;
}

.landing-hero .btn-primary {
  background-color: var(--gh-blue);
  border-color: var(--gh-blue);
  color: #fff;
}

.landing-hero .btn-primary:hover {
  background-color: #0860ca;
  border-color: #0860ca;
}

.landing-hero .btn-outline-primary {
  color: var(--gh-blue);
  border-color: var(--gh-blue);
}

.landing-hero .btn-outline-primary:hover {
  background-color: var(--gh-blue);
  border-color: var(--gh-blue);
  color: #fff;
}

/* Pillar cards grid */
.pillar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 768px) {
  .pillar-grid {
    grid-template-columns: 1fr;
  }
}

.pillar-card {
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  padding: 1.5rem;
  background: var(--bs-body-bg);
  transition: box-shadow 0.2s ease-in-out, border-color 0.2s ease-in-out;
  border-top: 3px solid transparent;
}

/* Each pillar gets a distinct GitHub color accent */
.pillar-card:nth-child(1) { border-top-color: var(--gh-green); }
.pillar-card:nth-child(2) { border-top-color: var(--gh-blue); }
.pillar-card:nth-child(3) { border-top-color: var(--gh-purple); }
.pillar-card:nth-child(4) { border-top-color: var(--gh-coral); }

.pillar-card:nth-child(1):hover { box-shadow: 0 4px 16px rgba(26, 127, 55, 0.12); }
.pillar-card:nth-child(2):hover { box-shadow: 0 4px 16px rgba(9, 105, 218, 0.12); }
.pillar-card:nth-child(3):hover { box-shadow: 0 4px 16px rgba(130, 80, 223, 0.12); }
.pillar-card:nth-child(4):hover { box-shadow: 0 4px 16px rgba(207, 34, 46, 0.12); }

[data-bs-theme="dark"] .pillar-card:nth-child(1):hover { box-shadow: 0 4px 16px rgba(63, 185, 80, 0.15); }
[data-bs-theme="dark"] .pillar-card:nth-child(2):hover { box-shadow: 0 4px 16px rgba(88, 166, 255, 0.15); }
[data-bs-theme="dark"] .pillar-card:nth-child(3):hover { box-shadow: 0 4px 16px rgba(188, 140, 255, 0.15); }
[data-bs-theme="dark"] .pillar-card:nth-child(4):hover { box-shadow: 0 4px 16px rgba(248, 81, 73, 0.15); }

.pillar-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* Pillar headings pick up their card's accent color */
.pillar-card:nth-child(1) h3 { color: var(--gh-green); }
.pillar-card:nth-child(2) h3 { color: var(--gh-blue); }
.pillar-card:nth-child(3) h3 { color: var(--gh-purple); }
.pillar-card:nth-child(4) h3 { color: var(--gh-coral); }

.pillar-card .pillar-stat {
  font-weight: 600;
  color: var(--gh-blue);
}

.pillar-card:nth-child(3) .pillar-stat {
  color: var(--gh-purple);
}

.pillar-card p:last-child {
  margin-bottom: 0;
}

.pillar-card ul {
  padding-left: 1.2rem;
  margin-bottom: 0.5rem;
}

.pillar-card .pillar-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.pillar-card:nth-child(1) .pillar-link { color: var(--gh-blue); }
.pillar-card:nth-child(2) .pillar-link { color: var(--gh-green); }
.pillar-card:nth-child(3) .pillar-link { color: var(--gh-purple); }
.pillar-card:nth-child(4) .pillar-link { color: var(--gh-coral); }

/* Community stats section */
.community-section {
  text-align: center;
  padding: 2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem auto;
  max-width: 700px;
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat-item {
  padding: 1rem;
}

.stat-item .stat-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gh-blue);
  line-height: 1.2;
}

.stat-item .stat-label {
  display: block;
  font-size: 0.85rem;
  opacity: 0.75;
  margin-top: 0.25rem;
}

/* Nav cards */
.nav-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

@media (max-width: 576px) {
  .nav-cards {
    grid-template-columns: 1fr;
  }
}

.nav-card {
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s ease-in-out, border-color 0.2s ease-in-out;
  display: block;
  border-left: 3px solid var(--gh-blue);
}

.nav-card:hover {
  border-color: var(--gh-blue);
  border-left-color: var(--gh-blue);
  box-shadow: 0 2px 8px rgba(9, 105, 218, 0.1);
  text-decoration: none;
  color: inherit;
}

[data-bs-theme="dark"] .nav-card:hover {
  box-shadow: 0 2px 8px rgba(88, 166, 255, 0.12);
}

.nav-card strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--gh-blue);
}

.nav-card span {
  font-size: 0.9rem;
  opacity: 0.75;
}

/* Footer CTA */
.footer-cta {
  text-align: center;
  padding: 2rem 0 1rem;
}

.footer-cta code {
  font-size: 1.05rem;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
}