/* Main Layout Styles */

.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  border-bottom: 1px solid hsl(var(--border));
  background-color: hsl(var(--background));
  padding: var(--spacing-md) var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

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

.header-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: hsl(var(--foreground));
}

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

#theme-toggle {
  font-size: 1.25rem;
  padding: 0.5rem;
  min-width: 2.25rem;
}

#theme-icon {
  display: inline-block;
  transition: transform 0.2s;
}

.app-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
  width: var(--sidebar-width);
  background-color: hsl(var(--sidebar-bg));
  color: hsl(var(--sidebar-foreground));
  border-right: 1px solid hsl(var(--sidebar-border));
  overflow-y: auto;
  overflow-x: hidden;
  position: sticky;
  top: 0;
  height: calc(100vh - 60px);
  flex-shrink: 0;
}

.sidebar-nav {
  padding: var(--spacing-md);
}

.sidebar-loading {
  padding: var(--spacing-md);
  color: hsl(var(--muted-foreground));
  text-align: center;
}

.sidebar-group {
  margin-bottom: var(--spacing-lg);
}

.sidebar-group-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: hsl(var(--muted-foreground));
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.sidebar-item {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: calc(var(--radius) - 2px);
  color: hsl(var(--sidebar-foreground));
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  font-size: 0.875rem;
  margin-bottom: 2px;
}

.sidebar-item:hover {
  background-color: hsl(var(--accent));
  color: hsl(var(--accent-foreground));
}

.sidebar-item.active {
  background-color: hsl(var(--sidebar-active-bg));
  color: hsl(var(--sidebar-active));
  font-weight: 500;
}

.sidebar-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(100%);
}

.sidebar-item-nested {
  padding-left: var(--spacing-xl);
  font-size: 0.8125rem;
}

.sidebar-toggle {
  display: none;
  padding: var(--spacing-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  color: hsl(var(--foreground));
}

/* Content Area */
.content-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-xl);
  max-width: 100%;
}

.content-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  color: hsl(var(--muted-foreground));
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid hsl(var(--border));
  border-top-color: hsl(var(--primary));
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.content-error {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.error-card {
  max-width: 500px;
  padding: var(--spacing-xl);
  text-align: center;
}

.error-card h2 {
  margin-bottom: var(--spacing-md);
  color: hsl(var(--destructive));
}

.error-card p {
  margin-bottom: var(--spacing-lg);
  color: hsl(var(--muted-foreground));
}

/* Markdown Content Styles */
.markdown-content {
  max-width: 900px;
  margin: 0 auto;
  font-family: var(--font-sans);
}

[dir="rtl"] .markdown-content {
  font-family: var(--font-arabic);
}

.markdown-content h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  color: hsl(var(--foreground));
}

.markdown-content h2 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
  color: hsl(var(--foreground));
  border-bottom: 1px solid hsl(var(--border));
  padding-bottom: var(--spacing-sm);
}

.markdown-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
  color: hsl(var(--foreground));
}

.markdown-content h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  color: hsl(var(--foreground));
}

.markdown-content h5,
.markdown-content h6 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: hsl(var(--foreground));
}

.markdown-content p {
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
  color: hsl(var(--foreground));
}

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

.markdown-content li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.7;
}

.markdown-content ul li {
  list-style-type: disc;
}

.markdown-content ol li {
  list-style-type: decimal;
}

.markdown-content a {
  color: hsl(var(--primary));
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.markdown-content a:hover {
  color: hsl(var(--primary) / 0.8);
}

.markdown-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: hsl(var(--muted));
  padding: 0.125rem 0.375rem;
  border-radius: calc(var(--radius) - 4px);
  color: hsl(var(--foreground));
}

.markdown-content pre {
  background-color: hsl(var(--muted));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

.markdown-content pre code {
  background-color: transparent;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.markdown-content blockquote {
  border-left: 4px solid hsl(var(--border));
  padding-left: var(--spacing-md);
  margin: var(--spacing-md) 0;
  color: hsl(var(--muted-foreground));
  font-style: italic;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  overflow: hidden;
}

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

.markdown-content table th {
  background-color: hsl(var(--muted));
  font-weight: 600;
}

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

.markdown-content table tr:hover {
  background-color: hsl(var(--accent) / 0.5);
}

.markdown-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: var(--spacing-md) 0;
}

.markdown-content hr {
  border: none;
  border-top: 1px solid hsl(var(--border));
  margin: var(--spacing-xl) 0;
}

/* RTL Support for Arabic */
[dir="rtl"] .markdown-content {
  text-align: right;
}

[dir="rtl"] .markdown-content ul,
[dir="rtl"] .markdown-content ol {
  padding-right: var(--spacing-xl);
  padding-left: 0;
}

[dir="rtl"] .markdown-content blockquote {
  border-right: 4px solid hsl(var(--border));
  border-left: none;
  padding-right: var(--spacing-md);
  padding-left: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-layout {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    height: auto;
    max-height: 300px;
    position: relative;
    border-right: none;
    border-bottom: 1px solid hsl(var(--sidebar-border));
  }
  
  .content-area {
    padding: var(--spacing-md);
  }
  
  .markdown-content h1 {
    font-size: 1.875rem;
  }
  
  .markdown-content h2 {
    font-size: 1.5rem;
  }
  
  .markdown-content h3 {
    font-size: 1.25rem;
  }
  
  .header-title {
    font-size: 1.25rem;
  }
}

@media (max-width: 640px) {
  .content-area {
    padding: var(--spacing-sm);
  }
  
  .markdown-content {
    font-size: 0.9375rem;
  }
  
  .markdown-content table {
    font-size: 0.875rem;
    display: block;
    overflow-x: auto;
  }
}

/* Search Container */
.search-container {
  position: relative;
  flex: 1;
  max-width: 400px;
  margin: 0 var(--spacing-md);
  z-index: 101;
}

.search-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  font-size: 0.875rem;
  transition: all 0.2s;
  position: relative;
  z-index: 102;
  pointer-events: auto;
}

.search-input:focus {
  outline: none;
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 2px hsl(var(--primary) / 0.1);
}

.search-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Search Results Dropdown */
.search-results {
  position: absolute;
  top: calc(100% + var(--spacing-xs));
  left: 0;
  right: 0;
  max-height: 400px;
  overflow-y: auto;
  background-color: hsl(var(--background));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  margin-top: var(--spacing-xs);
}

.search-result-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid hsl(var(--border));
  cursor: pointer;
  transition: background-color 0.15s;
}

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

.search-result-item:hover,
.search-result-item.selected {
  background-color: hsl(var(--accent));
}

.search-result-title {
  font-weight: 600;
  color: hsl(var(--foreground));
  margin-bottom: var(--spacing-xs);
  font-size: 0.875rem;
}

.search-result-snippet {
  color: hsl(var(--muted-foreground));
  font-size: 0.8125rem;
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

.search-result-path {
  color: hsl(var(--muted-foreground));
  font-size: 0.75rem;
  font-family: monospace;
}

.search-result-empty {
  padding: var(--spacing-lg);
  text-align: center;
  color: hsl(var(--muted-foreground));
}

/* Highlight */
mark {
  background-color: hsl(var(--primary) / 0.2);
  color: hsl(var(--primary));
  padding: 0 2px;
  border-radius: 2px;
}

/* Mobile Responsive for Search */
@media (max-width: 768px) {
  .search-container {
    max-width: 200px;
    margin: 0 var(--spacing-sm);
  }
  
  .search-results {
    max-height: 300px;
  }
}