/* Python Documentation Style - Inspired by docs.python.org */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --border-color: #e1e4e8;
  --accent-color: #3776ab;
  --accent-hover: #2d5f8a;
  --code-bg: #f6f8fa;
  --code-border: #e1e4e8;
  --sidebar-bg: #fafbfc;
  --sidebar-width: 280px;
  --sidebar-collapsed-width: 60px;
  --transition-speed: 0.2s;
  --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
}

[data-theme="dark"] {
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --text-primary: #d4d4d4;
  --text-secondary: #858585;
  --border-color: #3e3e42;
  --accent-color: #4a9eff;
  --accent-hover: #6bb3ff;
  --code-bg: #252526;
  --code-border: #3e3e42;
  --sidebar-bg: #252526;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-speed), color var(--transition-speed);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  font-size: 15px;
  margin: 0;
  padding: 0;
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  width: var(--sidebar-width);
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  min-height: 60px;
  background-color: var(--bg-primary);
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}



.sidebar-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.nav-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-speed);
}

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

.nav-tab.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

.tab-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

/* Search Form */
.search-form {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

/* Search Bar */
.search-bar-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  z-index: 1;
  pointer-events: none;
  color: var(--text-secondary);
}

.search-bar-input {
  width: 100%;
  padding: 0.75rem 1rem;
  padding-left: 2.5rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-speed);
  box-sizing: border-box;
}

.search-bar-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(55, 118, 171, 0.1);
}

.search-bar-input::placeholder {
  color: var(--text-secondary);
}

/* Search Suggestions */
.search-suggestions {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
  display: none;
  margin-top: 0.25rem;
}

[data-theme="dark"] .search-suggestions {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.search-suggestions.active {
  display: block;
}

.search-suggestion {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: background-color var(--transition-speed);
  border-bottom: 1px solid var(--border-color);
}

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

.search-suggestion:hover,
.search-suggestion.selected {
  background-color: var(--bg-secondary);
}

.search-suggestion .suggestion-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.search-suggestion .suggestion-name {
  flex: 1;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.search-suggestion .suggestion-name mark {
  background-color: var(--accent-color);
  color: white;
  padding: 0.1rem 0.2rem;
  border-radius: 2px;
  font-weight: 600;
}

.search-suggestion .suggestion-type {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  background-color: var(--bg-secondary);
  border-radius: 4px;
}

/* Language Selector */
.language-selector {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
}

.language-selector-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-speed);
  font-size: 0.9rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .language-selector-button {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.language-selector-button:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.language-emoji {
  font-size: 1.2rem;
  line-height: 1;
}

.language-name {
  color: var(--text-primary);
  font-weight: 500;
}

.language-arrow {
  color: var(--text-secondary);
  font-size: 0.7rem;
  transition: transform var(--transition-speed);
}

.language-selector-button:active .language-arrow {
  transform: rotate(180deg);
}

.language-dropdown.active + .language-selector-button .language-arrow,
.language-selector:has(.language-dropdown.active) .language-arrow {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  min-width: 200px;
  max-height: 400px;
  overflow-y: auto;
  display: none;
  z-index: 1001;
}

[data-theme="dark"] .language-dropdown {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.language-dropdown.active {
  display: block;
}

.language-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition-speed);
  border-bottom: 1px solid var(--border-color);
}

.language-option:last-child {
  border-bottom: none;
}

.language-option:hover {
  background-color: var(--bg-secondary);
}

.language-option.active {
  background-color: var(--accent-color);
  color: white;
}

.language-option.active .language-name,
.language-option.active .language-name-en {
  color: white;
}

.language-name-en {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .language-selector {
    top: 0.75rem;
    right: 0.75rem;
  }

  .language-selector-button {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
  }

  .language-name {
    display: none;
  }

  .language-dropdown {
    right: 0;
    min-width: 180px;
  }

  .search-suggestions {
    max-height: 250px;
  }
}

.input-group {
  margin-bottom: 0.75rem;
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.85rem;
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition-speed);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(55, 118, 171, 0.1);
}

.search-btn {
  width: 100%;
  padding: 0.6rem;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-speed);
  margin-top: 0.5rem;
}

.search-btn:hover {
  background-color: var(--accent-hover);
}

.search-btn:disabled {
  background-color: var(--text-secondary);
  cursor: not-allowed;
}

/* Module List */
.module-list-container {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  min-height: 0;
}

.module-list-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.75rem;
}

.module-section {
  margin-bottom: 1.5rem;
}

.module-section-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.module-items-list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.module-item {
  width: 100%;
  text-align: left;
  padding: 0.4rem 0.6rem;
  background: none;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 0.85rem;
  transition: all var(--transition-speed);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.module-item:hover {
  background-color: var(--bg-secondary);
  color: var(--accent-color);
}

.module-item:active {
  background-color: var(--accent-color);
  color: white;
}

/* Theme Toggle */
.theme-toggle-container {
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background-color: var(--bg-primary);
}

.theme-toggle-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed);
  width: 2.5rem;
  height: 2.5rem;
}

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

.theme-toggle__inner-moon {
  transition: transform var(--transition-speed);
}

[data-theme="dark"] .theme-toggle__inner-moon {
  transform: rotate(180deg);
}

.theme-toggle-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.resize-handle {
  position: absolute;
  right: 0;
  top: 0;
  width: 4px;
  height: 100%;
  cursor: ew-resize;
  background-color: transparent;
  transition: background-color var(--transition-speed);
}

.resize-handle:hover {
  background-color: var(--accent-color);
}


/* Main Content */
.content {
  margin-left: var(--sidebar-width);
  padding: 2rem 3rem;
  max-width: 100%;
  width: 100%;
  transition: margin-left var(--transition-speed);
  background-color: var(--bg-primary);
}


/* Typography - Python Docs Style */
h1 {
  font-size: 2.5rem;
  font-weight: 400;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.2;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

h2 {
  font-size: 1.75rem;
  font-weight: 400;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.3;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.3rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.7;
}

/* Documentation Display - Python Docs Style */
.results-container {
  max-width: 900px;
}

.doc-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.doc-title {
  font-size: 2rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.doc-meta {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.type-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 3px;
  font-size: 0.75rem;
  border: 1px solid var(--border-color);
  font-weight: 500;
}

.doc-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  background-color: var(--accent-color);
  color: white;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 500;
}

.doc-signature {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  padding: 1rem;
  border-radius: 4px;
  margin: 1.5rem 0;
  border: 1px solid var(--code-border);
  color: var(--text-primary);
  font-size: 0.9rem;
  overflow-x: auto;
}

.doc-section {
  margin-bottom: 2rem;
}

.doc-section-title {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.doc-text {
  white-space: pre-wrap;
  line-height: 1.8;
  color: var(--text-primary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

/* Code blocks */
.doc-text code,
.doc-signature code {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
  border: 1px solid var(--code-border);
}

/* Welcome Message */
.welcome-message {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.welcome-message h1 {
  border: none;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.welcome-message p {
  margin-bottom: 0.75rem;
  line-height: 1.8;
  font-size: 1rem;
}

/* Course Content */
.course-content {
  max-width: 900px;
}

.course-section {
  margin-bottom: 3rem;
  scroll-margin-top: 2rem;
}

.course-section h2 {
  margin-top: 0;
}

.markdown-content {
  line-height: 1.8;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-weight: 500;
}

.markdown-content h1 {
  font-size: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.markdown-content h2 {
  font-size: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.3rem;
}

.markdown-content h3 {
  font-size: 1.25rem;
}

.markdown-content h4 {
  font-size: 1.1rem;
}

.markdown-content p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.markdown-content ul,
.markdown-content ol {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

.markdown-content li {
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.markdown-content code {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
  border: 1px solid var(--code-border);
  color: var(--text-primary);
}

.markdown-content pre {
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.markdown-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

.markdown-content blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

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

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

.course-item {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.course-item::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

.course-item a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
}

.course-item a:hover {
  text-decoration: underline;
}

/* Error Message */
.error-message {
  background-color: #fee;
  border: 1px solid #fcc;
  color: #c33;
  padding: 1rem;
  border-radius: 4px;
  margin-top: 1rem;
}

[data-theme="dark"] .error-message {
  background-color: #3a1f1f;
  border-color: #5a2f2f;
  color: #ff6b6b;
}

.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Loading Progress Container */
.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  min-height: 400px;
  gap: 2rem;
}

/* Spinner Animation */
.loading-spinner {
  position: relative;
  width: 64px;
  height: 64px;
}

.spinner-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 4px solid transparent;
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring:nth-child(1) {
  animation-delay: -0.45s;
  border-top-color: var(--accent-color);
  opacity: 1;
}

.spinner-ring:nth-child(2) {
  animation-delay: -0.3s;
  border-top-color: var(--accent-hover);
  opacity: 0.8;
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
}

.spinner-ring:nth-child(3) {
  animation-delay: -0.15s;
  border-top-color: var(--accent-color);
  opacity: 0.6;
  width: 60%;
  height: 60%;
  top: 20%;
  left: 20%;
}

.spinner-ring:nth-child(4) {
  animation-delay: 0s;
  border-top-color: var(--accent-hover);
  opacity: 0.4;
  width: 40%;
  height: 40%;
  top: 30%;
  left: 30%;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.loading-text {
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 500;
  text-align: center;
  margin-top: 1rem;
}

/* Qt-style Progress Bar */
.progress-container {
  width: 100%;
  max-width: 400px;
  margin-top: 1rem;
}

.progress-bar {
  position: relative;
  width: 100%;
  height: 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--accent-color) 0%,
    var(--accent-hover) 50%,
    var(--accent-color) 100%
  );
  background-size: 200% 100%;
  border-radius: 11px;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: progressShine 2s linear infinite;
  box-shadow: 0 0 8px rgba(55, 118, 171, 0.3);
}

[data-theme="dark"] .progress-fill {
  background: linear-gradient(
    90deg,
    var(--accent-color) 0%,
    #6bb3ff 50%,
    var(--accent-color) 100%
  );
  background-size: 200% 100%;
  box-shadow: 0 0 12px rgba(74, 158, 255, 0.4);
}

.progress-shine {
  position: absolute;
  top: 0;
  left: 0;
  width: 30%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.5) 50%,
    transparent 100%
  );
  animation: shine 2.5s ease-in-out infinite;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.progress-bar .progress-shine {
  opacity: 0;
}

.progress-bar.has-progress .progress-shine {
  opacity: 1;
}

@keyframes progressShine {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@keyframes shine {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.progress-text {
  text-align: center;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* Responsive adjustments for loading */
@media (max-width: 768px) {
  .loading-container {
    padding: 3rem 1.5rem;
    min-height: 300px;
    gap: 1.5rem;
  }

  .loading-spinner {
    width: 48px;
    height: 48px;
  }

  .spinner-ring {
    border-width: 3px;
  }

  .loading-text {
    font-size: 1rem;
  }

  .progress-container {
    max-width: 100%;
  }

  .progress-bar {
    height: 20px;
  }

  .progress-text {
    font-size: 0.85rem;
    margin-top: 0.5rem;
  }
}

.loading-modules {
  text-align: center;
  padding: 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Scrollbar styling */
.sidebar-content::-webkit-scrollbar,
.content::-webkit-scrollbar {
  width: 8px;
}

.sidebar-content::-webkit-scrollbar-track,
.content::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

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

.sidebar-content::-webkit-scrollbar-thumb:hover,
.content::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1001;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  transition: all var(--transition-speed);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.mobile-menu-toggle:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-color);
}

[data-theme="dark"] .mobile-menu-toggle {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  pointer-events: none;
}

@media (max-width: 768px) {
  .sidebar-overlay.active {
    display: block;
    opacity: 1;
    pointer-events: all;
  }

  [data-theme="dark"] .sidebar-overlay {
    background-color: rgba(0, 0, 0, 0.7);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
  }
  
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.15);
  }
  
  .content {
    margin-left: 0;
    padding: 1rem;
    width: 100%;
  }

  .sidebar-header {
    padding: 0.75rem;
    min-height: 50px;
  }

  .sidebar-title {
    font-size: 1rem;
  }

  .search-form {
    padding: 0.75rem;
  }

  .module-list-container {
    padding: 0.75rem;
  }

  .theme-toggle-container {
    padding: 0.75rem;
  }

  .resize-handle {
    display: none;
  }
  
  h1 {
    font-size: 1.75rem;
    line-height: 1.3;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  .doc-title {
    font-size: 1.5rem;
  }

  .welcome-message {
    padding: 2rem 1rem;
  }

  .welcome-message h1 {
    font-size: 1.75rem;
  }

  .doc-signature {
    padding: 0.75rem;
    font-size: 0.85rem;
    overflow-x: auto;
  }

  .markdown-content {
    overflow-wrap: break-word;
    word-wrap: break-word;
  }

  .markdown-content pre {
    padding: 0.75rem;
    overflow-x: auto;
    font-size: 0.85rem;
  }

  .markdown-content code {
    font-size: 0.85rem;
  }

  .nav-tab {
    padding: 0.6rem 0.75rem;
    font-size: 0.85rem;
  }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
  .content {
    padding: 1.5rem 2rem;
  }

  .sidebar {
    width: 260px;
  }

  :root {
    --sidebar-width: 260px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .content {
    padding: 0.75rem;
  }

  .sidebar {
    width: 85vw;
    max-width: 300px;
  }

  .mobile-menu-toggle {
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.6rem;
    font-size: 1.25rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  .doc-title {
    font-size: 1.25rem;
  }

  .welcome-message {
    padding: 1.5rem 0.75rem;
  }

  .welcome-message h1 {
    font-size: 1.5rem;
  }

  .search-form {
    padding: 0.5rem;
  }

  .input-group {
    margin-bottom: 0.5rem;
  }

  .input-group input,
  .input-group select {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
  }

  .search-btn {
    padding: 0.5rem;
    font-size: 0.85rem;
    margin-top: 0.4rem;
  }
}

/* Prevent horizontal scroll on content */
.content {
  overflow-x: hidden;
  width: 100%;
  box-sizing: border-box;
}

/* Improve touch targets on mobile */
@media (max-width: 768px) {
  .module-item,
  .nav-tab,
  .search-btn {
    min-height: 44px;
    touch-action: manipulation;
  }

  .theme-toggle {
    min-width: 44px;
    min-height: 44px;
  }
}

/* Fix overflow issues */
.sidebar-content {
  -webkit-overflow-scrolling: touch;
}

.module-list-container {
  -webkit-overflow-scrolling: touch;
}

/* Ensure proper text wrapping */
.doc-text,
.markdown-content p {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Fix code block overflow */
.doc-signature,
.markdown-content pre {
  word-break: break-all;
  white-space: pre-wrap;
}

/* Improve focus states for accessibility */
@media (max-width: 768px) {
  .module-item:focus,
  .nav-tab:focus,
  .search-btn:focus,
  .theme-toggle:focus,
  .mobile-menu-toggle:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
  }
}