/* ShopGraph Documentation — Design System */
:root {
  --sidebar-width: 260px;
  --content-max: 820px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --color-bg: #ffffff;
  --color-sidebar-bg: #f8f9fa;
  --color-sidebar-border: #e5e7eb;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;
  --color-accent: #0969da;
  --color-accent-light: #dbeafe;
  --color-accent-hover: #0550ae;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --color-code-bg: #1e1e2e;
  --color-code-text: #cdd6f4;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-card-bg: #f9fafb;
  --radius: 8px;
  --radius-lg: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* === LAYOUT === */
.layout {
  display: flex;
  min-height: 100vh;
}

/* === SIDEBAR === */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-sidebar-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 50;
  transition: transform 0.2s ease;
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.sidebar-logo:hover { text-decoration: none; color: var(--color-text); }

.sidebar-logo svg { width: 24px; height: 24px; flex-shrink: 0; }

.sidebar-logo-text {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.sidebar-version {
  font-size: 11px;
  color: var(--color-text-muted);
  background: var(--color-border-light);
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 6px;
  font-weight: 500;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 4px;
}

.nav-section-title {
  padding: 6px 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.nav-section-title:hover { color: var(--color-text-secondary); }

.nav-section-title .chevron {
  width: 14px;
  height: 14px;
  transition: transform 0.15s ease;
  opacity: 0.5;
}

.nav-section.collapsed .chevron { transform: rotate(-90deg); }
.nav-section.collapsed .nav-items { display: none; }

.nav-items { list-style: none; }

.nav-item a {
  display: block;
  padding: 5px 20px 5px 28px;
  font-size: 13px;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: all 0.1s ease;
}

.nav-item a:hover {
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.03);
  text-decoration: none;
}

.nav-item a.active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background: var(--color-accent-light);
  font-weight: 500;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-footer a {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

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

/* === CONTENT === */
.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
}

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

/* === MOBILE HAMBURGER === */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 60;
  width: 40px;
  height: 40px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.mobile-toggle svg { width: 20px; height: 20px; color: var(--color-text); }

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 45;
}

/* === TYPOGRAPHY === */
h1 { font-size: 32px; font-weight: 700; line-height: 1.2; margin-bottom: 12px; letter-spacing: -0.02em; }
h2 { font-size: 24px; font-weight: 600; line-height: 1.3; margin-top: 40px; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--color-border); }
h3 { font-size: 18px; font-weight: 600; line-height: 1.4; margin-top: 32px; margin-bottom: 8px; }
h4 { font-size: 15px; font-weight: 600; line-height: 1.4; margin-top: 24px; margin-bottom: 8px; }

p { margin-bottom: 16px; }
.subtitle { font-size: 17px; color: var(--color-text-secondary); margin-bottom: 24px; line-height: 1.5; }

hr { border: none; border-top: 1px solid var(--color-border); margin: 32px 0; }

/* === CODE === */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: #f1f3f5;
  padding: 2px 6px;
  border-radius: 4px;
  color: #c7254e;
}

pre {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 20px;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: 16px 0;
  line-height: 1.5;
  font-size: 13px;
}

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

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #181825;
  padding: 8px 16px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  font-size: 12px;
  color: #a6adc8;
  font-family: var(--font-mono);
}

.code-header + pre {
  margin-top: 0;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.copy-btn {
  background: none;
  border: none;
  color: #a6adc8;
  cursor: pointer;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}

.copy-btn:hover { background: rgba(255,255,255,0.1); }

/* Syntax highlighting */
.token-key { color: #89b4fa; }
.token-string { color: #a6e3a1; }
.token-number { color: #fab387; }
.token-bool { color: #cba6f7; }
.token-null { color: #f38ba8; }
.token-comment { color: #6c7086; font-style: italic; }
.token-keyword { color: #cba6f7; }
.token-function { color: #89b4fa; }
.token-param { color: #fab387; }

/* === TABLES === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 10px 16px;
  border-bottom: 2px solid var(--color-border);
  font-weight: 600;
  font-size: 13px;
  color: var(--color-text-secondary);
}

td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: top;
}

tr:hover td { background: var(--color-card-bg); }

/* === CARDS === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(9, 105, 218, 0.08);
}

.card a { text-decoration: none; color: inherit; display: block; }
.card a:hover { text-decoration: none; }

.card-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  font-size: 18px;
}

.card h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.card p {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* === BADGES === */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  letter-spacing: 0.02em;
}

.badge-blue { background: var(--color-accent-light); color: var(--color-accent); }
.badge-green { background: #dcfce7; color: var(--color-success); }
.badge-yellow { background: #fef3c7; color: var(--color-warning); }
.badge-gray { background: #f3f4f6; color: var(--color-text-secondary); }

/* === HERO === */
.hero {
  margin-bottom: 40px;
}

.hero h1 {
  font-size: 36px;
  margin-bottom: 8px;
}

.hero .subtitle {
  font-size: 18px;
  margin-bottom: 20px;
}

.hero-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

/* === PLAYGROUND === */
.playground {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}

.playground-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.playground-header h3 { margin: 0; font-size: 16px; }

.playground-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.playground-field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.playground-field input {
  width: 100%;
  padding: 10px 14px;
  font-size: 13px;
  font-family: var(--font-mono);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
}

.playground-field input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(9,105,218,0.1); }

.playground-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
}

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

.btn-primary:hover { background: var(--color-accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover { background: var(--color-card-bg); }

.slider-group {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.slider-group input[type="range"] {
  width: 120px;
  accent-color: var(--color-accent);
}

.toggle-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.toggle-group input[type="checkbox"] { accent-color: var(--color-accent); }

.playground-results {
  margin-top: 16px;
  display: none;
}

.playground-results.visible { display: block; }

.result-meta {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 8px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.result-meta span { display: inline-flex; align-items: center; gap: 4px; }

/* === PRICING === */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

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

.pricing-card h3 { margin: 0 0 4px; font-size: 18px; }
.pricing-price { font-size: 32px; font-weight: 700; margin: 12px 0 4px; }
.pricing-price span { font-size: 14px; font-weight: 400; color: var(--color-text-secondary); }
.pricing-desc { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 16px; }

.pricing-features {
  list-style: none;
  flex: 1;
  margin-bottom: 20px;
}

.pricing-features li {
  padding: 4px 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.pricing-features li::before {
  content: "\2713";
  color: var(--color-success);
  margin-right: 8px;
  font-weight: 700;
}

/* === ACCORDION (FAQ) === */
.accordion { margin: 16px 0; }

.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
}

.accordion-trigger {
  width: 100%;
  background: none;
  border: none;
  padding: 14px 16px;
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-sans);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-trigger:hover { background: var(--color-card-bg); }

.accordion-trigger .chevron {
  width: 16px;
  height: 16px;
  transition: transform 0.15s ease;
  color: var(--color-text-muted);
}

.accordion-item.open .accordion-trigger .chevron { transform: rotate(180deg); }

.accordion-content {
  display: none;
  padding: 0 16px 14px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.accordion-item.open .accordion-content { display: block; }

/* === PIPELINE VIS === */
.pipeline {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 24px 0;
  overflow-x: auto;
  padding: 8px 0;
}

.pipeline-step {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  min-width: 100px;
}

.pipeline-arrow {
  color: var(--color-text-muted);
  font-size: 18px;
  padding: 0 4px;
  flex-shrink: 0;
}

/* === STATS === */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.stat-box {
  text-align: center;
  padding: 20px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.stat-number {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* === ALERTS === */
.alert {
  padding: 14px 16px;
  border-radius: var(--radius);
  margin: 16px 0;
  font-size: 14px;
  line-height: 1.5;
}

.alert-info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }

/* === SPINNER === */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .mobile-toggle { display: flex; }

  .sidebar {
    transform: translateX(-100%);
  }

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

  .mobile-overlay.open { display: block; }

  .content {
    margin-left: 0;
  }

  .content-inner {
    padding: 60px 20px 60px;
  }

  h1 { font-size: 26px; }
  h2 { font-size: 20px; }

  .playground-inputs {
    grid-template-columns: 1fr;
  }

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

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

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

  .pipeline {
    flex-direction: column;
  }

  .pipeline-arrow {
    transform: rotate(90deg);
  }
}