@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&family=Fraunces:wght@400;600&display=swap");

:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --ink: #1c1a16;
  --muted: #4f4a43;
  --accent: #e06b4f;
  --accent-dark: #b74f36;
  --surface: #fffdf8;
  --surface-soft: #fff6ea;
  --panel: #fff6ea;
  --border: #dccdbb;
  --grid: rgba(28, 26, 22, 0.04);
  --shadow: rgba(28, 26, 22, 0.08);

  /* Tailwind-compatible semantic aliases for future utility-framework parity */
  --tw-color-background: var(--bg);
  --tw-color-foreground: var(--ink);
  --tw-color-muted: var(--muted);
  --tw-color-border: var(--border);
  --tw-color-card: var(--surface);
  --tw-color-primary: var(--accent);
  --tw-color-primary-foreground: #ffffff;
  --tw-color-accent: var(--accent-dark);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f7f2e9 0%, #efe6d8 100%);
  min-height: 100vh;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 10%, rgba(224, 107, 79, 0.18), transparent 45%),
    radial-gradient(circle at 80% 0%, rgba(28, 26, 22, 0.08), transparent 50%),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px);
  background-size: auto, auto, 32px 32px, 32px 32px;
  pointer-events: none;
  z-index: -1;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
}

.layout-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 24px;
  padding: 0 32px 40px;
  align-items: start;
}

.left-rail {
  position: sticky;
  top: 16px;
  align-self: start;
  background: var(--surface);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 14px 28px var(--shadow);
}

.left-rail h2 {
  margin: 0 0 6px;
  font-family: "Fraunces", "Georgia", serif;
  font-size: 20px;
}

.left-rail p {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
}

.rail-nav {
  display: grid;
  gap: 8px;
}

.rail-nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 11px;
  background: var(--surface);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.rail-nav a:hover,
.rail-nav a.active {
  border-color: var(--accent);
  color: var(--ink);
  background: var(--surface-soft);
}

.rail-nav a:focus-visible,
.nav a:focus-visible,
.btn:focus-visible,
.doc-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.layout-content {
  min-width: 0;
}

.layout-content main {
  padding: 18px 8px 44px;
}

.brand {
  font-family: "Fraunces", "Georgia", serif;
  font-size: 22px;
  font-weight: 600;
}

.nav a {
  margin-left: 18px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.nav a:hover {
  color: var(--ink);
}

main {
  padding: 40px 60px 80px;
  animation: fade-in 0.6s ease-out;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  padding: 30px 0 50px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

h1 {
  font-family: "Fraunces", "Georgia", serif;
  font-size: 48px;
  margin: 0 0 16px;
}

.lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 620px;
}

.cta-row {
  display: flex;
  gap: 14px;
  margin: 22px 0 12px;
  flex-wrap: wrap;
}

.btn {
  border-radius: 999px;
  padding: 12px 22px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--border);
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent-dark);
}

.btn.primary:hover {
  background: var(--accent-dark);
}

.btn.ghost {
  color: var(--ink);
  background: transparent;
}

.cred {
  font-size: 14px;
  color: var(--muted);
}

.hero-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 20px 40px var(--shadow);
  animation: float-in 0.8s ease-out;
}

.card-top {
  font-weight: 700;
  margin-bottom: 10px;
}

.card-body {
  display: grid;
  gap: 10px;
}

.pill {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
}

.card-foot {
  margin-top: 14px;
  font-size: 12px;
  color: var(--muted);
}

.section {
  margin-top: 60px;
}

.section h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.panel {
  background: var(--surface);
  padding: 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  font-size: 15px;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.doc-card {
  display: block;
  text-decoration: none;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.doc-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px var(--shadow);
}

.doc-card strong {
  display: block;
  margin-bottom: 8px;
}

.doc-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.diagram-wrap {
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
}

.diagram-wrap h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.mermaid {
  overflow-x: auto;
}

.form {
  display: grid;
  gap: 16px;
  background: var(--surface);
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.form label {
  display: grid;
  gap: 8px;
  font-weight: 600;
}

.form input,
.form select,
.form textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
}

.form textarea {
  resize: vertical;
}

.checkboxes {
  display: grid;
  gap: 6px;
  font-weight: 400;
}

.steps {
  display: grid;
  gap: 12px;
  padding-left: 20px;
  color: var(--muted);
}

.highlight {
  background: var(--surface-soft);
  padding: 30px;
  border-radius: 18px;
  border: 1px solid var(--border);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 24px 60px 40px;
  font-size: 14px;
  color: var(--muted);
}

.footer-col {
  display: grid;
  gap: 8px;
  min-width: 180px;
}

.footer-col strong {
  color: var(--ink);
}

.footer-col p {
  margin: 0;
}

.footer-col a {
  color: var(--muted);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--ink);
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 900px) {
  .layout-shell {
    grid-template-columns: 1fr;
    padding: 0 16px 30px;
  }

  .left-rail {
    position: static;
  }

  .rail-nav {
    grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  }

  .site-header {
    flex-direction: column;
    gap: 12px;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .layout-content main,
  main {
    padding: 16px 8px 44px;
  }

  .site-footer {
    flex-direction: column;
    gap: 8px;
    padding: 20px 24px 30px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121518;
    --ink: #e6ebf0;
    --muted: #a8b2bd;
    --accent: #d66d55;
    --accent-dark: #b85a45;
    --surface: #1a2129;
    --surface-soft: #1e2630;
    --panel: #1d2530;
    --border: #344150;
    --grid: rgba(230, 235, 240, 0.06);
    --shadow: rgba(0, 0, 0, 0.35);

    --tw-color-background: var(--bg);
    --tw-color-foreground: var(--ink);
    --tw-color-muted: var(--muted);
    --tw-color-border: var(--border);
    --tw-color-card: var(--surface);
    --tw-color-primary: var(--accent);
    --tw-color-primary-foreground: #ffffff;
    --tw-color-accent: var(--accent-dark);
  }

  body {
    background: linear-gradient(180deg, #0f141a 0%, #141b23 100%);
  }
}