/* AI Story Engine — Developer Docs Stylesheet */

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #555770;
  --color-primary: #4f46e5;
  --color-primary-dark: #3730a3;
  --color-primary-light: #e0e7ff;
  --color-sidebar-bg: #1a1a2e;
  --color-sidebar-text: #c7c7d9;
  --color-sidebar-active: #4f46e5;
  --color-border: #e2e2ea;
  --color-code-bg: #f4f4f8;
  --color-code-block-bg: #1e1e30;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --sidebar-width: 260px;
  --content-max-width: 860px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
}

/* Sidebar Navigation */

.sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar-bg);
  color: var(--color-sidebar-text);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px 20px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-header h2 {
  font-size: 1.1rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-header span {
  font-size: 0.75rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.sidebar-nav {
  padding: 16px 0;
  flex: 1;
}

.sidebar-nav a {
  display: block;
  padding: 8px 20px;
  color: var(--color-sidebar-text);
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.sidebar-nav a.active {
  background: rgba(79, 70, 229, 0.15);
  color: #fff;
  border-left-color: var(--color-primary);
  font-weight: 600;
}

.sidebar-nav .nav-section {
  padding: 20px 20px 6px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(199, 199, 217, 0.5);
  font-weight: 700;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.78rem;
  color: rgba(199, 199, 217, 0.4);
}

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

.sidebar-footer a:hover {
  color: #fff;
}

/* Mobile sidebar toggle */

.sidebar-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: var(--color-sidebar-bg);
  color: #fff;
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* Main Content */

.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
}

.content {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 48px 40px 80px;
}

/* Typography */

h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  line-height: 1.2;
}

h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 6px;
  color: var(--color-text-muted);
}

/* Code */

code {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-primary-dark);
}

pre {
  background: var(--color-code-block-bg);
  color: #e2e2ea;
  padding: 20px 24px;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 24px;
  line-height: 1.5;
  font-size: 0.88rem;
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: inherit;
}

/* Syntax highlighting (basic) */
.token-keyword { color: #c792ea; }
.token-string { color: #c3e88d; }
.token-comment { color: #676e95; font-style: italic; }
.token-number { color: #f78c6c; }
.token-function { color: #82aaff; }
.token-type { color: #ffcb6b; }
.token-property { color: #89ddff; }
.token-punctuation { color: #89ddff; }
.token-url { color: #80cbc4; }
.token-header { color: #f78c6c; font-weight: bold; }
.token-status { color: #c3e88d; }

/* Cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 24px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  border-color: var(--color-primary-light);
}

.card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.card-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
  display: block;
}

/* Pricing */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.pricing-card {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 32px 24px;
  text-align: center;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.pricing-card .badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pricing-card h3 {
  margin-top: 8px;
  font-size: 1.2rem;
}

.pricing-card .price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-text);
  margin: 12px 0 4px;
}

.pricing-card .price-period {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  text-align: left;
  margin-bottom: 24px;
}

.pricing-card li {
  padding: 6px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
}

.pricing-card li:last-child {
  border-bottom: none;
}

.pricing-card li::before {
  content: "\2713 ";
  color: var(--color-success);
  font-weight: 700;
  margin-right: 6px;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  cursor: pointer;
  border: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-light);
}

/* Hero */

.hero {
  text-align: center;
  padding: 60px 0 48px;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 12px;
}

.hero .subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 28px;
}

.hero .btn {
  margin: 0 6px;
}

/* Steps */

.step {
  margin-bottom: 40px;
  padding-left: 48px;
  position: relative;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.step h3 {
  margin-top: 2px;
}

/* Tables */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

th, td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-code-bg);
}

td {
  color: var(--color-text-muted);
}

/* Callouts */

.callout {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  border-left: 4px solid;
}

.callout-info {
  background: #eff6ff;
  border-color: #3b82f6;
}

.callout-warning {
  background: #fffbeb;
  border-color: var(--color-warning);
}

.callout-success {
  background: #ecfdf5;
  border-color: var(--color-success);
}

.callout p {
  margin-bottom: 0;
  color: var(--color-text);
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

/* Breadcrumb-style page header */

.page-header {
  margin-bottom: 32px;
}

.page-header .breadcrumb {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.page-header .breadcrumb a {
  color: var(--color-text-muted);
}

/* Footer */

.page-footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.page-footer a {
  color: var(--color-text-muted);
  margin-left: 16px;
}

.page-footer a:hover {
  color: var(--color-primary);
}

/* Responsive */

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-toggle {
    display: block;
  }

  .main {
    margin-left: 0;
  }

  .content {
    padding: 72px 20px 60px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero .subtitle {
    font-size: 1rem;
  }

  .card-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .step {
    padding-left: 40px;
  }
}