/* =============================================================================
   Odin HPC Documentation - Main Stylesheet
   ============================================================================= */

/* CSS Variables */
:root {
  --color-primary: #0066cc;
  --color-primary-dark: #004499;
  --color-secondary: #6c757d;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-odin: #2563eb;
  
  --color-bg: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #dee2e6;
  
  --sidebar-width: 280px;
  --header-height: 60px;
  
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-family-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  --border-radius: 4px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

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

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

/* Layout */
.site-container {
  display: flex;
  min-height: 100vh;
}

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

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-odin), #1e40af);
}

.site-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  font-size: 1.5rem;
}

.sidebar-search {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.sidebar-search input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
}

.sidebar-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Navigation */
.nav-menu {
  list-style: none;
  padding: var(--spacing-md) 0;
  flex: 1;
}

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

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link:hover,
.nav-item.active > .nav-link {
  color: var(--color-primary);
  background: rgba(0, 102, 204, 0.05);
}

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

.nav-item.active .nav-submenu,
.nav-item:hover .nav-submenu {
  display: block;
}

.nav-sublink {
  display: block;
  padding: var(--spacing-xs) var(--spacing-lg);
  padding-left: calc(var(--spacing-lg) + var(--spacing-md));
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.nav-sublink:hover,
.nav-subitem.active .nav-sublink {
  color: var(--color-primary);
}

.sidebar-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-md);
}

.footer-link {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 0.875rem;
}

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

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
}

.page-header {
  position: sticky;
  top: 0;
  background: var(--color-bg);
  padding: var(--spacing-md) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  z-index: 50;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-odin);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  margin-right: var(--spacing-md);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
}

.page-content {
  padding: var(--spacing-xl);
  max-width: 900px;
}

.page-footer {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 0.875rem;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: 2rem; margin-top: 0; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--color-border); padding-bottom: var(--spacing-sm); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
h5, h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Lists */
ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

li {
  margin-bottom: var(--spacing-xs);
}

/* Code */
code {
  font-family: var(--font-family-mono);
  font-size: 0.875em;
  background: var(--color-bg-secondary);
  padding: 0.125em 0.25em;
  border-radius: var(--border-radius);
  color: #d63384;
}

pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
  color: inherit;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

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

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

tr:hover td {
  background: var(--color-bg-secondary);
}

/* Blockquotes - Warnings */
blockquote {
  border-left: 4px solid var(--color-warning);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  background: #fff8e1;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
}

/* Mermaid diagrams */
.mermaid {
  margin: var(--spacing-lg) 0;
  text-align: center;
}

/* Alerts/Callouts */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
}

.alert-info {
  background: #e7f3ff;
  border-left: 4px solid var(--color-primary);
}

.alert-warning {
  background: #fff3cd;
  border-left: 4px solid var(--color-warning);
}

.alert-danger {
  background: #f8d7da;
  border-left: 4px solid var(--color-danger);
}

.alert-success {
  background: #d4edda;
  border-left: 4px solid var(--color-success);
}

/* Command boxes */
.command-box {
  background: #1e1e1e;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  position: relative;
}

.command-box code {
  background: none;
  color: #4ec9b0;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .page-header {
    display: flex;
    align-items: center;
  }
  
  .page-content {
    padding: var(--spacing-md);
  }
}

/* Print */
@media print {
  .sidebar, .menu-toggle {
    display: none;
  }
  
  .main-content {
    margin-left: 0;
  }
}