:root {
  --color-surface-0: #ffffff;
  --color-surface-1: #fafafa;
  --color-surface-2: #f3f4f6;
  --color-border: #e2e2e5;
  --color-fg: #111827;
  --color-fg-muted: #6b7280;
  --color-fg-subtle: #9ca3af;
  --color-hover-bg: #f3f4f6;
  --color-accent: #ea580c;
  --color-accent-light: #fff7ed;
  --color-code-bg: #f3f4f6;
}

.dark {
  --color-surface-0: #09090b;
  --color-surface-1: #0c0c0e;
  --color-surface-2: #141416;
  --color-border: #1e1e22;
  --color-fg: #fafafa;
  --color-fg-muted: #a1a1aa;
  --color-fg-subtle: #52525b;
  --color-hover-bg: #18181b;
  --color-accent: #f97316;
  --color-accent-light: #1c1106;
  --color-code-bg: #1e1e22;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--color-surface-0);
  color: var(--color-fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* Layout */
.docs-layout {
  display: flex;
  min-height: 100vh;
}

.docs-sidebar {
  width: 260px;
  background: var(--color-surface-1);
  border-right: 1px solid var(--color-border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  padding: 24px 16px;
  z-index: 40;
}

.docs-sidebar .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-fg);
  text-decoration: none;
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.docs-sidebar .logo img {
  width: 20px;
  height: 20px;
}

.dark .docs-sidebar .logo img { filter: invert(1); }

.docs-sidebar .nav-section {
  margin-bottom: 20px;
}

.docs-sidebar .nav-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-fg-subtle);
  padding: 0 12px;
  margin-bottom: 6px;
}

.docs-sidebar .nav-link {
  display: block;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-fg-muted);
  text-decoration: none;
  transition: all 0.15s;
}

.docs-sidebar .nav-link:hover {
  color: var(--color-fg);
  background: var(--color-hover-bg);
  text-decoration: none;
}

.docs-sidebar .nav-link.active {
  color: var(--color-fg);
  background: var(--color-hover-bg);
}

.docs-main {
  flex: 1;
  margin-left: 260px;
  min-width: 0;
}

.docs-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* Typography */
.docs-content h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.docs-content .subtitle {
  font-size: 15px;
  color: var(--color-fg-muted);
  margin-bottom: 32px;
}

.docs-content h2 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  letter-spacing: -0.01em;
}

.docs-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
}

.docs-content p {
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--color-fg-muted);
}

.docs-content ul, .docs-content ol {
  margin-bottom: 16px;
  padding-left: 20px;
}

.docs-content li {
  font-size: 14px;
  color: var(--color-fg-muted);
  margin-bottom: 6px;
}

.docs-content code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 13px;
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.docs-content pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 16px 20px;
  overflow-x: auto;
  margin-bottom: 16px;
}

.docs-content pre code {
  background: none;
  padding: 0;
  font-size: 13px;
  line-height: 1.6;
}

.docs-content strong { color: var(--color-fg); }

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  transition: border-color 0.15s;
}

.card:hover {
  border-color: var(--color-fg-subtle);
  text-decoration: none;
}

.card .card-icon {
  font-size: 24px;
  margin-bottom: 10px;
}

.card .card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-fg);
  margin-bottom: 4px;
}

.card .card-desc {
  font-size: 12px;
  color: var(--color-fg-muted);
  line-height: 1.5;
}

/* Steps */
.step {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.step-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content h3 {
  margin-top: 0;
  margin-bottom: 6px;
  font-size: 15px;
}

.step-content p {
  margin-bottom: 0;
}

/* Prompt examples */
.prompt-list {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.prompt-list li {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 8px;
  font-size: 13px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--color-fg);
}

/* Callout */
.callout {
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 13px;
}

.callout strong { color: var(--color-accent); }

/* Back to app link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-fg-subtle);
  text-decoration: none;
  margin-top: auto;
  padding-top: 24px;
}

.back-link:hover { color: var(--color-fg-muted); text-decoration: none; }

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--color-fg-muted);
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  transition: all 0.15s;
}

.theme-toggle:hover {
  color: var(--color-fg);
  background: var(--color-hover-bg);
}

/* Mobile hamburger */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 50;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-1);
  color: var(--color-fg);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .docs-sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s;
  }
  .docs-sidebar.open { transform: translateX(0); }
  .docs-main { margin-left: 0; }
  .docs-content { padding: 48px 20px 60px; }
}