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

:root {
  /* Enterprise Slate/Indigo Palette */
  --bg-primary: #0b1220;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --surface: #1e293b;
  --surface-hover: #223047;
  --border: rgba(148, 163, 184, 0.22);
  --divider: rgba(148, 163, 184, 0.14);
  --text-primary: #e5e7eb;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-primary: #6366f1; /* indigo */
  --accent-secondary: #3b82f6; /* blue */
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.36);
  --shadow-xl: 0 24px 56px rgba(0, 0, 0, 0.42);
  
  /* Code Highlighting */
  --code-bg: #0f172a;
  --code-border: #1f2937;
  --code-text: #e5e7eb;
  --code-keyword: #a78bfa;
  --code-string: #34d399;
  --code-comment: #9ca3af;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background:
    radial-gradient(1000px 600px at 10% 0%, rgba(99, 102, 241, 0.12), transparent),
    radial-gradient(800px 400px at 90% 10%, rgba(59, 130, 246, 0.10), transparent),
    var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Header Styles */
.docs-header {
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-lg);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: var(--accent-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
  box-shadow: var(--shadow-md);
}

.header-text h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.version {
  background: var(--surface);
  color: var(--accent-primary);
  padding: 0.3rem 0.7rem;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
  border: 1px solid var(--border);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.search-btn {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 1.2rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.search-btn:hover {
  background: var(--surface-hover);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.search-btn kbd {
  background: var(--bg-tertiary);
  color: var(--accent-primary);
  border-radius: 6px;
  padding: 0.2rem 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid var(--border);
}

.github-link {
  color: var(--text-secondary);
  font-size: 1.3rem;
  transition: all 0.3s ease;
  padding: 0.5rem;
  border-radius: 8px;
}

.github-link:hover {
  color: var(--accent-primary);
  background: var(--surface);
  transform: scale(1.1);
}

/* Layout */
.docs-layout {
  display: flex;
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* Sidebar Styles */
.docs-sidebar {
  width: 300px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--divider);
  height: calc(100vh - 73px);
  overflow-y: auto;
  position: sticky;
  top: 73px;
  box-shadow: var(--shadow-lg);
}

.sidebar-content {
  padding: 2rem 0;
}

.nav-section {
  margin-bottom: 2.5rem;
}

.nav-section-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0 1.5rem;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.nav-section-title i {
  font-size: 1rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
  border-radius: 0 8px 8px 0;
  margin: 0.2rem 0;
}

.nav-link:hover {
  background: var(--surface);
  color: var(--text-primary);
  border-left-color: var(--accent-primary);
  transform: translateX(4px);
}

.nav-link.active {
  background: var(--surface-hover);
  color: var(--accent-primary);
  border-left-color: var(--accent-primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.nav-link i {
  font-size: 0.9rem;
}

/* Main Content */
.docs-main {
  flex: 1;
  display: flex;
  min-height: calc(100vh - 73px);
}

.content-wrapper {
  flex: 1;
  padding: 3rem 4rem;
  max-width: calc(100% - 250px);
  background: transparent;
}

.main-section {
  margin-bottom: 4rem;
}

.section-header {
  margin-bottom: 2.5rem;
  padding: 2rem;
  background: rgba(17, 24, 39, 0.65);
  border-radius: 12px;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-md);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.section-title h2 {
  font-size: 2rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.difficulty {
  padding: 0.4rem 1rem;
  border-radius: 25px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid;
}

.difficulty.beginner {
  background: rgba(0, 255, 136, 0.1);
  color: var(--success);
  border-color: var(--success);
}

.difficulty.intermediate {
  background: rgba(255, 204, 0, 0.1);
  color: var(--warning);
  border-color: var(--warning);
}

.difficulty.advanced {
  background: rgba(255, 71, 87, 0.1);
  color: var(--error);
  border-color: var(--error);
}

.read-time {
  color: var(--text-muted);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.content-block {
  margin-bottom: 2.5rem;
  padding: 2rem;
  background: rgba(17, 24, 39, 0.6);
  border-radius: 10px;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-sm);
}

.lead {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
  font-weight: 400;
}

/* Content Styling */
.content-block h3 {
  color: var(--accent-primary);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.content-block p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* Info Cards */
.info-card, .warning-card {
  background: var(--surface);
  border-radius: 12px;
  padding: 1.8rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--divider);
}

.info-card {
  border-left: 4px solid var(--accent-primary);
}

.warning-card {
  border-left: 4px solid var(--warning);
  background: var(--bg-tertiary);
}

.info-header, .warning-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.info-header h3, .warning-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.info-header i {
  color: var(--accent-primary);
  font-size: 1.2rem;
}

.warning-header i {
  color: var(--warning);
  font-size: 1.2rem;
}

.feature-list {
  list-style: none;
  margin: 0;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  color: var(--text-secondary);
  padding: 0.5rem 0;
}

.feature-list i {
  color: var(--success);
  font-size: 1rem;
}

.inline-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.inline-link:hover {
  color: var(--accent-secondary);
  text-decoration: underline;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Step Container */
.step-container {
  margin: 2.5rem 0;
}

.step-item {
  display: flex;
  gap: 1.8rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

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

.step-number {
  width: 45px;
  height: 45px;
  background: var(--accent-gradient);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.step-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.7rem;
}

.step-content p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Code Blocks */
.code-block {
  background: var(--code-bg);
  border-radius: 12px;
  overflow: hidden;
  margin: 2rem 0;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--code-border);
}

.code-header {
  background: var(--bg-tertiary);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.code-lang {
  color: var(--accent-primary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.3s ease;
  font-weight: 500;
}

.copy-btn:hover {
  background: var(--surface);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: scale(1.05);
}

.code-block pre {
  background: transparent;
  border: none;
  margin: 0;
  padding: 1.8rem;
  overflow-x: auto;
}

.code-block code {
  font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  color: var(--code-text);
  background: transparent;
  font-size: 0.9rem;
  line-height: 1.8;
}

/* Code Syntax Highlighting */
.code-block .keyword {
  color: var(--code-keyword);
  font-weight: 600;
}

.code-block .string {
  color: var(--code-string);
}

.code-block .comment {
  color: var(--code-comment);
  font-style: italic;
}

/* Practices Grid */
.practices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}

.practice-card {
  background: var(--surface);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 1px solid var(--divider);
}

.practice-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-primary);
}

.practice-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.practice-header i {
  color: var(--accent-primary);
  font-size: 1.4rem;
}

.practice-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.practice-card ul {
  list-style: none;
}

.practice-card li {
  color: var(--text-secondary);
  margin-bottom: 0.7rem;
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.5;
}

.practice-card li::before {
  content: '▶';
  color: var(--accent-primary);
  position: absolute;
  left: 0;
  font-size: 0.8rem;
}

/* Performance Metrics */
.performance-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}

.metric-card {
  background: var(--surface);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.metric-icon {
  width: 55px;
  height: 55px;
  background: var(--accent-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
  box-shadow: var(--shadow-sm);
}

.metric-content h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.3rem;
}

.metric-value.excellent {
  color: var(--success);
}

.metric-value.good {
  color: var(--accent-primary);
}

.metric-value.warning {
  color: var(--warning);
}

.metric-content p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* Footer */
.docs-footer {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  margin-top: auto;
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2rem 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-section h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  color: var(--accent-primary);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 0.7rem;
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.footer-section a:hover {
  color: var(--accent-primary);
  padding-left: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .docs-layout {
    flex-direction: column;
  }
  
  .docs-sidebar {
    width: 100%;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  
  .content-wrapper {
    max-width: 100%;
    padding: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .header-content {
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
  }
  
  .practices-grid {
    grid-template-columns: 1fr;
  }
  
  .performance-metrics {
    grid-template-columns: 1fr;
  }
}
  
  .content-wrapper {
    padding: 1.5rem;
  }
  
  .section-title {
    font-size: 1.875rem;
  }
  
  .practices-grid {
    grid-template-columns: 1fr;
  }
  
  .performance-metrics {
    grid-template-columns: 1fr;
  }
  
  .step-item {
    flex-direction: column;
    gap: 1rem;
  }
}