/* ===================================
   CSS Variables & Color Scheme
   =================================== */
:root {
  /* Light mode colors */
  --bg-primary: #F7F9FC;
  --bg-secondary: #FFFFFF;
  --text-primary: #1A1A1A;
  --text-secondary: #4A5568;
  --accent-orange: #E6622A;
  --accent-blue: #EBFDFE;
  --border-color: #E2E8F0;
  --shadow: rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-heading: 'Funnel Display', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-card: 1.25rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 70px;
}

[data-theme="dark"] {
  --bg-primary: #0D1117;
  --bg-secondary: #161B22;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --border-color: #30363D;
  --shadow: rgba(0, 0, 0, 0.3);
}

/* ===================================
   Base Styles
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--accent-orange);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

code {
  font-family: 'Monaco', 'Courier New', monospace;
  background-color: var(--bg-secondary);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background-color: var(--bg-secondary);
  padding: var(--spacing-sm);
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: var(--spacing-sm);
  position: relative;
}

pre code {
  background: none;
  padding: 0;
}

/* Code copy button */
.code-block-wrapper {
  position: relative;
}

.copy-code-button {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 6px 10px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease, background-color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 4px;
  z-index: 10;
}

.code-block-wrapper:hover .copy-code-button {
  opacity: 1;
}

.copy-code-button:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-orange);
}

.copy-code-button.copied {
  color: #28a745;
  border-color: #28a745;
}

.copy-code-button svg {
  width: 14px;
  height: 14px;
}

.copy-icon,
.check-icon {
  transition: all 0.2s ease;
}

.copy-code-button .check-icon {
  display: none;
}

.copy-code-button.copied .copy-icon {
  display: none;
}

.copy-code-button.copied .check-icon {
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===================================
   Header
   =================================== */
.site-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: background-color 0.3s ease;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-orange);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.main-nav a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--accent-orange);
  opacity: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background-color: var(--bg-primary);
  border-color: var(--accent-orange);
}

.theme-toggle .sun-icon {
  display: none;
}

.theme-toggle .moon-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: none;
}

.github-link {
  color: var(--text-primary);
  display: flex;
  align-items: center;
  padding: 0.5rem;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all 0.3s ease;
}

/* ===================================
   Main Content
   =================================== */
.main-content {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding: var(--spacing-lg) 0;
}

/* Documentation page content */
.main-content > .container {
  max-width: 900px;
}

.main-content h1,
.main-content h2,
.main-content h3,
.main-content h4,
.main-content h5,
.main-content h6 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.main-content h1:first-child,
.main-content h2:first-child {
  margin-top: 0;
}

.main-content p,
.main-content ul,
.main-content ol {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.main-content ul,
.main-content ol {
  padding-left: var(--spacing-md);
}

.main-content li {
  margin-bottom: 0.5rem;
}

.main-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.main-content table thead {
  background-color: var(--bg-primary);
}

.main-content table th {
  padding: var(--spacing-sm);
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
  vertical-align: top;
}

.main-content table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
  word-wrap: break-word;
}

.main-content table tr:last-child td {
  border-bottom: none;
}

.main-content table td code {
  white-space: nowrap;
}

.main-content blockquote {
  border-left: 4px solid var(--accent-orange);
  padding-left: var(--spacing-sm);
  margin: var(--spacing-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.hero {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--accent-orange);
}

.hero .subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.badge-container {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.badge-container img {
  height: 20px;
  border-radius: 4px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.badge-container img:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px var(--shadow);
}

.badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.warning-banner {
  background-color: rgba(230, 98, 42, 0.1);
  border: 1px solid var(--accent-orange);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) auto;
  border-radius: 4px;
  max-width: 600px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  transition: all 0.2s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--accent-orange);
  color: white;
}

.btn-primary:hover {
  background-color: #d45521;
  opacity: 1;
}

.btn-secondary {
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  background-color: transparent;
}

.btn-secondary:hover {
  border-color: var(--accent-orange);
  opacity: 1;
}

.section {
  margin: var(--spacing-xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.feature-card {
  background-color: var(--bg-secondary);
  padding: var(--spacing-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow);
  border-color: var(--accent-orange);
}

.feature-card h3 {
  color: var(--accent-orange);
  margin-top: 0;
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  flex-grow: 1;
  margin-bottom: 0;
}

.feature-card .btn {
  margin-top: var(--spacing-sm);
}

.system-diagram {
  text-align: center;
  margin: var(--spacing-lg) 0;
}

.system-diagram img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px var(--shadow);
  border: 1px solid var(--border-color);
}

.code-example {
  margin: var(--spacing-md) 0;
}

/* ===================================
   Footer
   =================================== */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-section h3,
.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--text-secondary);
}

.footer-section a:hover {
  color: var(--accent-orange);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero .subtitle {
    font-size: 1.2rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }

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

  .cta-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}