/* MCP Gateway - MCP-inspired Design System */

:root {
  /* Colors - Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --border-color: #e2e8f0;
  --accent-color: #3b82f6;
  --accent-hover: #2563eb;
  --code-bg: #1e293b;
  --code-text: #e2e8f0;
  
  /* Sidebar */
  --sidebar-width: 280px;
  --sidebar-bg: var(--bg-secondary);
  
  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-code: 'Fira Code', 'Consolas', 'Monaco', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: rgb(29, 30, 32);
  --bg-secondary: rgb(46, 46, 51);
  --bg-tertiary: rgb(46, 46, 51);
  --text-primary: rgb(218, 218, 219);
  --text-secondary: rgb(155, 156, 157);
  --text-tertiary: rgb(65, 66, 68);
  --border-color: rgb(29, 30, 32);
  --code-bg: rgb(55, 56, 62);
  --code-text: rgb(218, 218, 219);
  --sidebar-bg: rgb(29, 30, 32);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Layout */
body {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: 1fr;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  transition: all var(--transition-base);
  z-index: 100;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.1rem;
}

.site-logo svg {
  color: var(--accent-color);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

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

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

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

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

.nav-section {
  margin-bottom: var(--spacing-lg);
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

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

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--accent-color);
  color: white;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.github-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: var(--spacing-sm);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.github-link:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.version {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-sm);
  text-align: center;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: var(--spacing-md);
  left: var(--spacing-md);
  z-index: 101;
  background: var(--accent-color);
  border: 1px solid var(--accent-color);
  width: 44px;
  height: 44px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  color: #ffffff;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.mobile-menu-toggle:active {
  transform: scale(0.95);
}

/* Main Content */
.main-content {
  padding: var(--spacing-xl);
  max-width: 100%;
  overflow-x: hidden;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent-color);
}

.separator {
  color: var(--text-tertiary);
}

/* Typography */
.content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.content h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.content p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.content a {
  color: var(--accent-color);
  text-decoration: none;
}

.content a:hover {
  text-decoration: underline;
}

/* Code */
.content code {
  font-family: var(--font-code);
  font-size: 0.875em;
  background: var(--bg-secondary);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

.content pre {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: var(--spacing-lg);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
}

.content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--code-text);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* Lists */
.content ul,
.content ol {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
  color: var(--text-secondary);
}

.content li {
  margin-bottom: var(--spacing-sm);
}

/* Tables */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  font-size: 0.9rem;
}

.content th,
.content td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border: 1px solid var(--border-color);
}

.content th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.content td {
  color: var(--text-secondary);
}

/* Blockquotes */
.content blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Page Navigation */
.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.page-nav-prev,
.page-nav-next {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.page-nav-prev:hover,
.page-nav-next:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

.page-nav-next {
  justify-content: flex-end;
  text-align: right;
}

.page-nav .label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  display: block;
}

.page-nav .title {
  font-weight: 500;
  display: block;
}

/* Table of Contents */
.toc {
  display: none;
}

/* Responsive */
@media (max-width: 1024px) {
  body {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: var(--sidebar-width);
    transition: left var(--transition-base);
  }
  
  .sidebar.open {
    left: 0;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .main-content {
    padding-left: calc(var(--spacing-xl) + 60px);
  }
}

@media (max-width: 768px) {
  .main-content {
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + 60px);
  }
  
  .content h1 {
    font-size: 2rem;
  }
  
  .content h2 {
    font-size: 1.5rem;
  }
  
  .page-nav {
    grid-template-columns: 1fr;
  }
}