/* 
 * Solana MCP Server Documentation Site
 * E-ink inspired grayscale theme with modern navigation
 */

/* CSS Custom Properties - E-ink Color Palette */
:root {
  /* E-ink grayscale palette */
  --eink-white: #ffffff;
  --eink-paper: #fafafa;
  --eink-light-gray: #f5f5f5;
  --eink-medium-gray: #e8e8e8;
  --eink-dark-gray: #d0d0d0;
  --eink-charcoal: #666666;
  --eink-dark-charcoal: #444444;
  --eink-black: #222222;
  
  /* Accent colors (minimal use) */
  --accent-teal: #2d5f5f;
  --accent-teal-light: #4a7a7a;
  --accent-amber: #cc9900;
  
  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  
  /* Font weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Font sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Line heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --sidebar-width: 280px;
  --header-height: 72px;
  
  /* Borders and shadows */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-width: 1px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-sans);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--eink-black);
  background-color: var(--eink-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--eink-black);
  color: var(--eink-white);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  z-index: 1000;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.skip-link:focus {
  top: 6px;
}

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

/* Header */
.site-header {
  background-color: var(--eink-white);
  border-bottom: var(--border-width) solid var(--eink-medium-gray);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--eink-black);
  font-weight: var(--font-weight-semibold);
  gap: var(--spacing-sm);
}

.logo-image {
  width: 32px;
  height: 32px;
}

.site-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: var(--eink-charcoal);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(45, 95, 95, 0.1), transparent);
  transition: left 0.4s ease;
}

.nav-link:hover {
  color: var(--eink-black);
  background-color: var(--eink-light-gray);
  transform: translateY(-1px);
}

.nav-link:hover::before {
  left: 100%;
}

.nav-link:active {
  transform: translateY(0);
  transition: all 0.1s ease;
}

.nav-link.active {
  color: var(--accent-teal);
  font-weight: var(--font-weight-semibold);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background-color: var(--accent-teal);
  border-radius: 1px;
  animation: scaleIn 0.3s ease;
}

/* Header utilities */
.header-utilities {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.search-toggle,
.bookmark-toggle,
.menu-toggle {
  background: none;
  border: none;
  color: var(--eink-charcoal);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transform: scale(1);
  overflow: hidden;
}

.search-toggle::before,
.bookmark-toggle::before,
.menu-toggle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: var(--eink-light-gray);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s ease;
  z-index: -1;
}

.search-toggle:hover,
.bookmark-toggle:hover,
.menu-toggle:hover {
  background-color: var(--eink-light-gray);
  color: var(--eink-black);
  transform: scale(1.05);
}

.search-toggle:hover::before,
.bookmark-toggle:hover::before,
.menu-toggle:hover::before {
  width: 40px;
  height: 40px;
}

.search-toggle:active,
.bookmark-toggle:active,
.menu-toggle:active {
  transform: scale(0.95);
  transition: all 0.1s ease;
}

.search-toggle svg,
.bookmark-toggle svg,
.menu-toggle svg {
  transition: all var(--transition-fast);
}

.search-toggle:hover svg {
  transform: rotate(5deg);
}

.bookmark-toggle:hover svg {
  transform: scale(1.1);
}

.bookmark-toggle.bookmarked {
  color: var(--accent-amber);
  animation: bounce 0.5s ease;
}

.bookmark-toggle.bookmarked svg {
  fill: currentColor;
  transform: scale(1.1);
}

/* Menu toggle (hamburger) */
.menu-toggle {
  display: none;
  flex-direction: column;
  width: 24px;
  height: 24px;
}

.menu-bar {
  width: 100%;
  height: 2px;
  background-color: currentColor;
  margin: 2px 0;
  border-radius: 1px;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform-origin: center;
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Search overlay */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-container {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  width: 90%;
  max-width: 600px;
  background-color: var(--eink-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
}

.search-overlay.active .search-container {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.search-input-wrapper {
  position: relative;
  padding: var(--spacing-lg);
  border-bottom: var(--border-width) solid var(--eink-medium-gray);
}

#search-input {
  width: 100%;
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  color: var(--eink-black);
  outline: none;
  font-family: inherit;
}

#search-input::placeholder {
  color: var(--eink-charcoal);
}

.search-close {
  position: absolute;
  top: 50%;
  right: var(--spacing-lg);
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--eink-charcoal);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.search-close:hover {
  background-color: var(--eink-light-gray);
  color: var(--eink-black);
}

.search-results {
  max-height: 400px;
  overflow-y: auto;
}

.search-result {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: var(--border-width) solid var(--eink-light-gray);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  background-color: transparent;
}

.search-result::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 100%;
  background-color: var(--eink-light-gray);
  transition: width 0.3s ease;
  z-index: -1;
}

.search-result:hover {
  background-color: var(--eink-light-gray);
  transform: translateX(4px);
}

.search-result:hover::before {
  width: 4px;
  background-color: var(--accent-teal);
}

.search-result:active {
  transform: translateX(2px);
  background-color: var(--eink-medium-gray);
}

.search-result:last-child {
  border-bottom: none;
}

.search-result-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--eink-black);
}

.search-result-snippet {
  font-size: var(--font-size-sm);
  color: var(--eink-charcoal);
  line-height: var(--line-height-relaxed);
}

/* Main content */
.main-content {
  min-height: calc(100vh - var(--header-height) - 120px);
  padding: var(--spacing-xl) 0;
}

.content-layout {
  display: flex;
  gap: var(--spacing-2xl);
  align-items: flex-start;
}

/* Sidebar */
.sidebar {
  flex: 0 0 var(--sidebar-width);
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-xl));
}

.docs-nav {
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
}

.docs-nav-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
  color: var(--eink-black);
}

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

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

.category-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--accent-teal);
  margin-bottom: var(--spacing-xs);
}

.category-description {
  font-size: var(--font-size-xs);
  color: var(--eink-charcoal);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

.docs-nav-item {
  margin-bottom: var(--spacing-xs);
}

.docs-nav-link {
  display: block;
  text-decoration: none;
  color: var(--eink-charcoal);
  font-size: var(--font-size-sm);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.docs-nav-link:hover {
  background-color: var(--eink-light-gray);
  color: var(--eink-black);
}

.docs-nav-link.active {
  background-color: var(--accent-teal);
  color: var(--eink-white);
  font-weight: var(--font-weight-medium);
}

/* Page content */
.page-content {
  flex: 1;
  min-width: 0;
}

.page-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: var(--border-width) solid var(--eink-medium-gray);
}

.page-title-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  color: var(--eink-black);
  flex: 1;
}

.github-source-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--eink-charcoal);
  text-decoration: none;
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-sm);
  background-color: var(--eink-light-gray);
  transition: all 0.2s ease;
}

.github-source-btn:hover {
  color: var(--eink-black);
  background-color: var(--eink-medium-gray);
  border-color: var(--eink-dark-gray);
  text-decoration: none;
}

.github-source-btn .github-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

.page-description {
  font-size: var(--font-size-lg);
  color: var(--eink-charcoal);
  line-height: var(--line-height-relaxed);
}

/* Content typography */
.content {
  line-height: var(--line-height-relaxed);
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--eink-black);
}

.content h1 {
  font-size: var(--font-size-3xl);
  border-bottom: var(--border-width) solid var(--eink-medium-gray);
  padding-bottom: var(--spacing-sm);
}

.content h2 {
  font-size: var(--font-size-2xl);
}

.content h3 {
  font-size: var(--font-size-xl);
}

.content h4 {
  font-size: var(--font-size-lg);
}

.content h5,
.content h6 {
  font-size: var(--font-size-base);
}

.content p {
  margin-bottom: var(--spacing-md);
  color: var(--eink-dark-charcoal);
}

.content a {
  color: var(--accent-teal);
  text-decoration: underline;
  text-decoration-color: var(--eink-dark-gray);
  text-underline-offset: 2px;
  transition: all var(--transition-fast);
}

.content a:hover {
  color: var(--accent-teal-light);
  text-decoration-color: var(--accent-teal-light);
}

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

.content li {
  margin-bottom: var(--spacing-xs);
  color: var(--eink-dark-charcoal);
}

.content li::marker {
  color: var(--eink-charcoal);
}

.content blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--eink-light-gray);
  border-left: 4px solid var(--accent-teal);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.content blockquote p {
  margin-bottom: 0;
  font-style: italic;
  color: var(--eink-charcoal);
}

/* Code blocks */
.content pre,
.content code {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

.content code {
  background-color: var(--eink-light-gray);
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
  color: var(--eink-black);
}

.content pre {
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
  line-height: var(--line-height-normal);
}

.content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: var(--eink-dark-charcoal);
}

/* Tables */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.content th,
.content td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: var(--border-width) solid var(--eink-light-gray);
}

.content th {
  background-color: var(--eink-light-gray);
  font-weight: var(--font-weight-semibold);
  color: var(--eink-black);
}

.content td {
  color: var(--eink-dark-charcoal);
}

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

/* Page navigation */
.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-xl);
  border-top: var(--border-width) solid var(--eink-medium-gray);
  gap: var(--spacing-lg);
}

.page-nav-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  padding: var(--spacing-md);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  background-color: var(--eink-white);
  transition: all var(--transition-fast);
  flex: 1;
  max-width: 300px;
}

.page-nav-link:hover {
  border-color: var(--accent-teal);
  box-shadow: var(--shadow-sm);
}

.page-nav-link.prev {
  text-align: left;
}

.page-nav-link.next {
  text-align: right;
  margin-left: auto;
}

.nav-direction {
  font-size: var(--font-size-xs);
  color: var(--eink-charcoal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
}

.nav-title {
  font-size: var(--font-size-sm);
  color: var(--eink-black);
  font-weight: var(--font-weight-medium);
}

/* Footer */
.site-footer {
  background-color: var(--eink-white);
  border-top: var(--border-width) solid var(--eink-medium-gray);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-info {
  font-size: var(--font-size-sm);
  color: var(--eink-charcoal);
}

.footer-info a {
  color: var(--accent-teal);
  text-decoration: none;
}

.footer-info a:hover {
  text-decoration: underline;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--eink-charcoal);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.footer-links a:hover {
  color: var(--eink-black);
  text-decoration: underline;
}

/* Home page specific styles */
.hero-section {
  text-align: center;
  padding: var(--spacing-3xl) 0;
  margin-bottom: var(--spacing-3xl);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--eink-black);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--eink-charcoal);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  cursor: pointer;
  background-color: var(--eink-white);
  color: var(--eink-black);
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.5s ease;
}

.btn:hover {
  border-color: var(--accent-teal);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.btn:hover::before {
  left: 100%;
}

.btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.1s ease;
}

.btn-primary {
  background-color: var(--accent-teal);
  color: var(--eink-white);
  border-color: var(--accent-teal);
  box-shadow: 0 2px 8px rgba(45, 95, 95, 0.2);
}

.btn-primary:hover {
  background-color: var(--accent-teal-light);
  border-color: var(--accent-teal-light);
  box-shadow: 0 4px 16px rgba(45, 95, 95, 0.3);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 8px rgba(45, 95, 95, 0.2);
}

/* Feature grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-3xl) 0;
}

.feature-card {
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(45, 95, 95, 0.05), transparent);
  transition: left 0.5s ease;
}

.feature-card:hover {
  border-color: var(--accent-teal);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
  transform: translateY(-8px);
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  display: block;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  color: var(--eink-black);
}

.feature-description {
  color: var(--eink-charcoal);
  line-height: var(--line-height-relaxed);
}

/* Documentation grid */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.docs-card {
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  text-decoration: none;
  color: inherit;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: block;
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.docs-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--accent-teal);
  transition: width 0.3s ease;
}

.docs-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(45, 95, 95, 0.03), transparent);
  transition: left 0.5s ease;
}

.docs-card:hover {
  border-color: var(--accent-teal);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  transform: translateY(-4px);
}

.docs-card:hover::before {
  width: 100%;
}

.docs-card:hover::after {
  left: 100%;
}

.docs-card:hover .docs-card-icon {
  transform: scale(1.1);
}

.docs-card:active {
  transform: translateY(-2px);
  transition: all 0.1s ease;
}

.docs-card-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  display: block;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.docs-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--eink-black);
}

.docs-card-description {
  font-size: var(--font-size-sm);
  color: var(--eink-charcoal);
  line-height: var(--line-height-relaxed);
}

/* Responsive design */
@media (max-width: 768px) {
  :root {
    --container-max-width: 100%;
    --sidebar-width: 100%;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    position: relative;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--eink-white);
    border-top: var(--border-width) solid var(--eink-medium-gray);
    z-index: 50;
  }
  
  .main-nav.active {
    display: block;
  }
  
  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-md);
  }
  
  .nav-link {
    display: block;
    padding: var(--spacing-md);
    border-bottom: var(--border-width) solid var(--eink-light-gray);
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .content-layout {
    flex-direction: column;
    gap: var(--spacing-xl);
  }
  
  .sidebar {
    position: static;
    order: 2;
  }
  
  .page-content {
    order: 1;
  }
  
  .page-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .page-nav-link {
    max-width: none;
    margin-left: 0;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .docs-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-xs);
  }
  
  .site-header {
    height: 60px;
  }
  
  .site-title {
    font-size: var(--font-size-base);
  }
  
  .search-container {
    width: 95%;
  }
  
  .main-content {
    padding: var(--spacing-lg) 0;
  }
  
  .page-title {
    font-size: var(--font-size-2xl);
  }
  
  .feature-card,
  .docs-card {
    padding: var(--spacing-md);
  }
}

/* Print styles */
@media print {
  .site-header,
  .sidebar,
  .page-nav,
  .site-footer,
  .search-overlay {
    display: none !important;
  }
  
  .main-content {
    padding: 0;
  }
  
  .content-layout {
    flex-direction: column;
  }
  
  .page-content {
    width: 100%;
  }
  
  body {
    background: white;
    color: black;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
}

/* Accessibility enhancements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --eink-white: #ffffff;
    --eink-paper: #ffffff;
    --eink-light-gray: #f0f0f0;
    --eink-medium-gray: #cccccc;
    --eink-dark-gray: #999999;
    --eink-charcoal: #333333;
    --eink-dark-charcoal: #222222;
    --eink-black: #000000;
    --accent-teal: #000080;
    --accent-teal-light: #000080;
  }
  
  .content a {
    text-decoration: underline;
    text-decoration-thickness: 2px;
  }
  
  .btn {
    border-width: 2px;
  }
}

/* Focus indicators */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--accent-teal);
  outline-offset: 2px;
}

/* Loading states and animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-2px); }
  75% { transform: translateX(2px); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-4px);
  }
  60% {
    transform: translateY(-2px);
  }
}

@keyframes spinOnce {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.fade-in {
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-down {
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.scale-in {
  animation: scaleIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Syntax highlighting (Rouge) */
.highlight {
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-medium-gray);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
}

.highlight .c { color: var(--eink-charcoal); font-style: italic; } /* Comment */
.highlight .k { color: var(--accent-teal); font-weight: bold; } /* Keyword */
.highlight .s { color: var(--accent-amber); } /* String */
.highlight .nb { color: var(--accent-teal); } /* Name.Builtin */

/* Floating LLMs.txt Button */
.llms-floating-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--accent-teal);
  color: var(--eink-white);
  border: none;
  border-radius: 50px;
  padding: 12px 20px;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-sans);
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(45, 95, 95, 0.3);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
  transform: translateY(0);
  min-width: 120px;
  overflow: hidden;
}

.llms-floating-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s ease;
  z-index: -1;
}

.llms-floating-btn:hover {
  background-color: var(--accent-teal-light);
  box-shadow: 0 6px 20px rgba(45, 95, 95, 0.4);
  transform: translateY(-2px) scale(1.05);
}

.llms-floating-btn:hover::before {
  width: 200px;
  height: 200px;
}

.llms-floating-btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 4px 16px rgba(45, 95, 95, 0.3);
  transition: all 0.1s ease;
}

.llms-floating-btn.copying {
  background-color: var(--accent-amber);
  animation: pulse 0.5s ease;
}

.llms-floating-btn.copied {
  background-color: #22c55e;
  animation: bounce 0.6s ease;
}

.llms-icon {
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  flex-shrink: 0;
}

.llms-floating-btn:hover .llms-icon {
  transform: scale(1.1) rotate(5deg);
}

.llms-text {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .llms-floating-btn {
    bottom: 20px;
    right: 20px;
    padding: 10px 16px;
    min-width: 100px;
  }
  
  .llms-text {
    font-size: 10px;
  }
  
  .llms-icon {
    width: 16px;
    height: 16px;
  }
}

@media (max-width: 480px) {
  .llms-floating-btn {
    bottom: 15px;
    right: 15px;
    padding: 8px 12px;
    min-width: 80px;
  }
  
  .llms-text {
    display: none;
  }
}

/* Accessibility for reduced motion */
@media (prefers-reduced-motion: reduce) {
  .llms-floating-btn {
    transition: none;
    animation: none;
  }
  
  .llms-floating-btn:hover {
    transform: none;
  }
  
  .llms-floating-btn:active {
    transform: none;
  }
}

/* Mermaid diagrams */
.mermaid {
  text-align: center;
  margin: var(--spacing-xl) 0;
  background-color: var(--eink-white);
  border: var(--border-width) solid var(--eink-light-gray);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  overflow-x: auto;
}

/* Mermaid diagram text styling */
.mermaid text {
  font-family: var(--font-family-sans) !important;
  font-size: 14px !important;
  fill: var(--eink-charcoal) !important;
}

/* Mermaid flowchart nodes */
.mermaid .node rect,
.mermaid .node circle,
.mermaid .node ellipse,
.mermaid .node polygon {
  fill: var(--eink-white) !important;
  stroke: var(--eink-charcoal) !important;
  stroke-width: 2px !important;
}

/* Mermaid flowchart edges */
.mermaid .edgePath path {
  stroke: var(--eink-charcoal) !important;
  stroke-width: 2px !important;
}

/* Mermaid flowchart arrowheads */
.mermaid .arrowheadPath {
  fill: var(--eink-charcoal) !important;
  stroke: var(--eink-charcoal) !important;
}

/* Mermaid sequence diagram styling */
.mermaid .actor {
  fill: var(--eink-white) !important;
  stroke: var(--eink-charcoal) !important;
  stroke-width: 2px !important;
}

.mermaid .activation0,
.mermaid .activation1,
.mermaid .activation2 {
  fill: var(--eink-light-gray) !important;
  stroke: var(--eink-charcoal) !important;
}

.mermaid .messageLine0,
.mermaid .messageLine1 {
  stroke: var(--eink-charcoal) !important;
  stroke-width: 2px !important;
}

/* Mermaid subgraph styling */
.mermaid .cluster rect {
  fill: var(--eink-light-gray) !important;
  stroke: var(--accent-teal) !important;
  stroke-width: 2px !important;
  stroke-dasharray: 5,5 !important;
}

.mermaid .cluster text {
  fill: var(--accent-teal) !important;
  font-weight: var(--font-weight-semibold) !important;
}

/* Responsive Mermaid diagrams */
@media (max-width: 768px) {
  .mermaid {
    font-size: 12px;
    padding: var(--spacing-md);
  }
  
  .mermaid svg {
    max-width: 100%;
    height: auto;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .llms-floating-btn {
    border: 2px solid var(--eink-white);
    background-color: var(--eink-black);
    color: var(--eink-white);
  }
  
  .llms-floating-btn:hover {
    background-color: var(--eink-dark-charcoal);
  }
  
  /* High contrast Mermaid diagrams */
  .mermaid {
    border: 2px solid var(--eink-black);
    background-color: var(--eink-white);
  }
  
  .mermaid .node rect,
  .mermaid .node circle,
  .mermaid .node ellipse,
  .mermaid .node polygon {
    fill: var(--eink-white) !important;
    stroke: var(--eink-black) !important;
    stroke-width: 3px !important;
  }
  
  .mermaid .edgePath path {
    stroke: var(--eink-black) !important;
    stroke-width: 3px !important;
  }
}
.highlight .nf { color: var(--eink-dark-charcoal); font-weight: bold; } /* Name.Function */