/* Color Palette - SNOW Theme */
:root[data-theme='light'] {
  --color-background: #ffffff;
  --color-background-secondary: rgba(255, 255, 255, 0.95);
  --color-surface: #f5f5f7;
  --color-sidebar-bg: rgba(245, 245, 247, 0.95);
  --color-sidebar-text: #1d1d1f;
  --color-sidebar-hover: #e5e5e5;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-border: #e5e5e5;
  --color-primary: #0066cc;
  --color-primary-dark: #0052a3;
  --color-primary-light: #3399ff;
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-error: #ff3b30;
}

:root[data-theme='dark'] {
  --color-background: #1e1e1e;
  --color-background-secondary: rgba(30, 30, 30, 0.95);
  --color-surface: #2d2d2d;
  --color-sidebar-bg: rgba(22, 22, 22, 0.95);
  --color-sidebar-text: #eaeaea;
  --color-sidebar-hover: #333333;
  --color-text-primary: #eaeaea;
  --color-text-secondary: #7a7a7a;
  --color-border: #333333;
  --color-primary: #4d9cff;
  --color-primary-dark: #2d7dd9;
  --color-primary-light: #6db3ff;
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-error: #ff453a;
}

/* Light mode default */
:root {
  --color-background: #ffffff;
  --color-background-secondary: rgba(255, 255, 255, 0.95);
  --color-surface: #f5f5f7;
  --color-sidebar-bg: rgba(245, 245, 247, 0.95);
  --color-sidebar-text: #1d1d1f;
  --color-sidebar-hover: #e5e5e5;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-border: #e5e5e5;
  --color-primary: #0066cc;
  --color-primary-dark: #0052a3;
  --color-primary-light: #3399ff;
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-error: #ff3b30;

  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.5rem;
  --spacing-6: 2rem;
  --spacing-8: 3rem;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  --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: 2rem;

  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
  --font-family-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;

  --max-width-container: 1400px;
  --sidebar-width: 280px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #1e1e1e;
    --color-background-secondary: rgba(30, 30, 30, 0.95);
    --color-surface: #2d2d2d;
    --color-sidebar-bg: rgba(22, 22, 22, 0.95);
    --color-sidebar-text: #eaeaea;
    --color-sidebar-hover: #333333;
    --color-text-primary: #eaeaea;
    --color-text-secondary: #7a7a7a;
    --color-border: #333333;
    --color-primary: #4d9cff;
    --color-primary-dark: #2d7dd9;
    --color-primary-light: #6db3ff;
    --color-success: #34c759;
    --color-warning: #ff9500;
    --color-error: #ff453a;
  }
}

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

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-background);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: var(--spacing-5) 0 var(--spacing-3) 0;
  font-weight: 600;
  line-height: 1.3;
}

h1 {
  font-size: var(--font-size-3xl);
}

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

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

h4,
h5,
h6 {
  font-size: var(--font-size-lg);
}

p {
  margin: var(--spacing-4) 0;
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

code {
  font-family: var(--font-family-mono);
  background-color: var(--color-surface);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--color-primary);
}

pre {
  background-color: var(--color-surface);
  padding: var(--spacing-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-4) 0;
  border-left: 3px solid var(--color-primary);
  line-height: 1.4;
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: var(--color-text-primary);
  font-size: 0.9em;
}

blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-4);
  margin: var(--spacing-4) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

ul,
ol {
  margin: var(--spacing-4) 0;
  padding-left: var(--spacing-6);
}

li {
  margin: var(--spacing-2) 0;
}

/* Layout */
.container {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.layout-wrapper {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.layout-content {
  display: flex;
  flex: 1;
  max-width: var(--max-width-container);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--spacing-4);
}

.sidebar {
  width: var(--sidebar-width);
  background-color: var(--color-sidebar-bg);
  padding: var(--spacing-6) var(--spacing-4);
  border-right: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  transition: background-color 0.2s ease;
}

.main-content {
  flex: 1;
  padding: var(--spacing-8) var(--spacing-6);
  min-width: 0;
}

/* Header */
.header {
  background-color: var(--color-background-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.header-title a {
  color: inherit;
  text-decoration: none;
}

.header-actions {
  display: flex;
  gap: var(--spacing-4);
  align-items: center;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  padding: var(--spacing-2);
  transition: color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--color-primary);
}

/* Sidebar Navigation */
.sidebar-nav {
  list-style: none;
  padding-left: 0;
}

.sidebar-nav-item {
  margin: var(--spacing-3) 0;
}

.sidebar-nav-link {
  display: flex;
  padding: var(--spacing-2) var(--spacing-3);
  color: var(--color-sidebar-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, color 0.2s ease;
  font-size: var(--font-size-sm);
  vertical-align: middle;
}

.sidebar-nav-link-text {
  vertical-align: middle;
}

.sidebar-nav-link:hover {
  background-color: var(--color-sidebar-hover);
  color: var(--color-primary);
  text-decoration: none;
}

.sidebar-nav-link.active {
  background-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

.sidebar-section-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-secondary);
  margin: var(--spacing-5) 0 var(--spacing-3) 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Folder Groups */
.sidebar-folder-group {
  margin: var(--spacing-3) 0;
}

.sidebar-folder-toggle {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  background: none;
  border: none;
  color: var(--color-sidebar-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, color 0.2s ease;
  text-align: left;
  font-family: var(--font-family-sans);
}

.sidebar-folder-toggle:hover {
  background-color: var(--color-sidebar-hover);
  color: var(--color-primary);
}

.sidebar-folder-toggle .material-symbols-outlined {
  display: inline-flex;
  margin-right: var(--spacing-2);
  transition: transform 0.2s ease;
  font-size: 1.2em;
}

.sidebar-folder-toggle[aria-expanded="true"] .material-symbols-outlined {
  transform: rotate(180deg);
}

.sidebar-folder-name {
  flex: 1;
}

.sidebar-folder-nav {
  list-style: none;
  overflow: hidden;
  transition: max-height 0.2s ease, opacity 0.2s ease;
  max-height: 0;
  opacity: 0;
  margin: 0;
  padding: 0;
}

.sidebar-folder-nav.expanded {
  opacity: 1;
  max-height: 1000px;
}

.sidebar-folder-nav .sidebar-nav-item {
  margin: var(--spacing-2) 0;
  padding-left: var(--spacing-3);
  border-left: 2px solid var(--color-border);
}

.sidebar-folder-nav .sidebar-nav-link {
  padding: var(--spacing-2) var(--spacing-2);
  font-size: 0.875rem;
}

/* Footer */
.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-6) var(--spacing-4);
  margin-top: auto;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

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

/* Blog Section */
.blog-section {
  margin-top: var(--spacing-8);
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-border);
}

.blog-section h2 {
  margin-bottom: var(--spacing-6);
}

.blog-posts-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

/* Blog Posts */
.blog-post-item {
  display: block;
  padding: var(--spacing-5);
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
  background-color: var(--color-background);
}

.blog-post-item:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

:root[data-theme='dark'] .blog-post-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.blog-post-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
  transition: color 0.2s ease;
}

.blog-post-item:hover .blog-post-title {
  color: var(--color-primary-dark);
}

.blog-post-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-3);
}

.blog-post-excerpt {
  color: var(--color-text-secondary);
  line-height: 1.5;
  font-size: var(--font-size-sm);
}

.post-date {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.post-author {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
}

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

/* Tables */
table {
  border-collapse: collapse;
  width: 100%;
  margin: var(--spacing-4) 0;
}

th,
td {
  border: 1px solid var(--color-border);
  padding: var(--spacing-3);
  text-align: left;
}

th {
  background-color: var(--color-surface);
  font-weight: 600;
}

tr:nth-child(even) {
  background-color: var(--color-surface);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--spacing-4) 0;
}

/* Material Symbols Icons */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  font-size: 1.25em;
  line-height: 1;
  vertical-align: -0.25em;
}

/* Documentation Index */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-5);
  margin: var(--spacing-6) 0;
}

.docs-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  margin: var(--spacing-4) 0;
}

.docs-item {
  padding: var(--spacing-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  background-color: var(--color-background);
}

.docs-item:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  transform: translateY(-2px);
}

.docs-item h3,
.docs-item h4 {
  margin: 0 0 var(--spacing-2) 0;
  font-size: 1.1em;
}

.docs-item h3 a,
.docs-item h4 a {
  color: var(--color-primary);
  text-decoration: none;
}

.docs-item h3 a:hover,
.docs-item h4 a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.docs-item p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 768px) {
  .layout-content {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-4);
  }

  .main-content {
    padding: var(--spacing-4);
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

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

  h3 {
    font-size: var(--font-size-lg);
  }

  .blog-post-item {
    padding: var(--spacing-4);
  }

  .blog-post-item:hover {
    transform: none;
  }
}

/* Focus and accessibility */
.sidebar-nav-link:focus,
.blog-post-item:focus,
.btn:focus,
a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Print styles */
@media print {

  .header,
  .sidebar,
  .footer,
  .post-navigation {
    display: none;
  }

  .layout-content {
    flex-direction: column;
  }

  .main-content {
    padding: 0;
  }
}