/* ============================================
   DetectionHUB - World-Class SOC Dashboard
   Modern UI/UX with Glassmorphism & Dark/Light Theme
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
  /* Theme Toggle */
  --theme-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Core Colors - Light Theme (Default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-heavy: rgba(255, 255, 255, 0.85);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;

  --border-primary: #e2e8f0;
  --border-secondary: #cbd5e1;
  --border-glass: rgba(255, 255, 255, 0.2);

  /* Brand Colors - MITRE ATT&CK */
  --mitre-blue: #005b94;
  --mitre-blue-light: #0284c7;
  --mitre-blue-dark: #0369a1;
  --mitre-blue-bg: rgba(0, 91, 148, 0.1);

  /* SIEM Brand Colors */
  --splunk-green: #65a637;
  --splunk-green-light: #7cc242;
  --splunk-green-bg: rgba(101, 166, 55, 0.15);

  --sentinel-purple: #7c3aed;
  --sentinel-purple-light: #8b5cf6;
  --sentinel-purple-bg: rgba(124, 58, 237, 0.15);

  --qradar-blue: #0f62fe;
  --qradar-blue-light: #4589ff;
  --qradar-blue-bg: rgba(15, 98, 254, 0.15);

  --elastic-orange: #f97316;
  --elastic-orange-light: #fb923c;
  --elastic-orange-bg: rgba(249, 115, 22, 0.15);

  --sigma-yellow: #eab308;
  --sigma-yellow-light: #facc15;
  --sigma-yellow-bg: rgba(234, 179, 8, 0.15);

  /* MITRE ATT&CK Tactic Colors */
  --tactic-recon: #6366f1;
  --tactic-resource: #8b5cf6;
  --tactic-initial-access: #ec4899;
  --tactic-execution: #ef4444;
  --tactic-persistence: #f97316;
  --tactic-privilege: #f59e0b;
  --tactic-defense: #eab308;
  --tactic-credential: #84cc16;
  --tactic-discovery: #22c55e;
  --tactic-lateral: #14b8a6;
  --tactic-collection: #06b6d4;
  --tactic-c2: #0ea5e9;
  --tactic-exfil: #3b82f6;
  --tactic-impact: #6366f1;

  /* Status Colors */
  --success: #10b981;
  --success-light: #34d399;
  --success-bg: rgba(16, 185, 129, 0.15);

  --warning: #f59e0b;
  --warning-light: #fbbf24;
  --warning-bg: rgba(245, 158, 11, 0.15);

  --danger: #ef4444;
  --danger-light: #f87171;
  --danger-bg: rgba(239, 68, 68, 0.15);

  --info: #3b82f6;
  --info-light: #60a5fa;
  --info-bg: rgba(59, 130, 246, 0.15);

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 40px rgba(0, 91, 148, 0.15);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Roboto Mono', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Layout */
  --sidebar-width: 520px;
  --header-height: 64px;
  --container-max: 1400px;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.6, 0.32, 1.6);

  /* Code Block Colors */
  --code-bg: #0f172a;
  --code-text: #e2e8f0;
  --code-comment: #64748b;
  --code-keyword: #c084fc;
  --code-string: #4ade80;
  --code-number: #fbbf24;
  --code-function: #60a5fa;
  --code-operator: #f472b6;
  --code-variable: #f97316;
}

/* ============================================
   Dark Theme Variables
   ============================================ */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-elevated: #1e293b;
  --bg-glass: rgba(30, 41, 59, 0.7);
  --bg-glass-heavy: rgba(30, 41, 59, 0.9);

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --border-primary: #334155;
  --border-secondary: #475569;
  --border-glass: rgba(255, 255, 255, 0.1);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(0, 91, 148, 0.3);

  --code-bg: #0a0f1a;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  transition: background-color var(--theme-transition), color var(--theme-transition);
}

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

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   Custom Scrollbar
   ============================================ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-tertiary);
  transition: background 0.2s;
}

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

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-secondary) var(--bg-tertiary);
}

/* ============================================
   Selection
   ============================================ */
::selection {
  background: var(--mitre-blue);
  color: var(--text-inverse);
}

/* ============================================
   Layout Components
   ============================================ */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-6);
  width: 100%;
}

/* ============================================
   Header / Navigation
   ============================================ */
header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-primary);
  transition: all var(--theme-transition);
}

header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--mitre-blue-bg) 0%, transparent 50%);
  opacity: 0.5;
  pointer-events: none;
}

.logo {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--mitre-blue);
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.logo svg {
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 2px 4px rgba(0, 91, 148, 0.3));
}

.logo span {
  font-weight: 300;
  color: var(--text-tertiary);
  text-transform: none;
}

nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all 0.2s var(--ease-in-out);
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--mitre-blue);
  opacity: 0;
  transition: opacity 0.2s;
}

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

.nav-link.active {
  color: var(--mitre-blue);
  background: var(--mitre-blue-bg);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--mitre-blue);
  border-radius: var(--radius-full);
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-left: var(--space-4);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all 0.2s var(--ease-in-out);
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--mitre-blue);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Icons
   ============================================ */
.icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex-shrink: 0;
}

.icon-sm {
  width: 14px;
  height: 14px;
}

.icon-lg {
  width: 24px;
  height: 24px;
}

/* ============================================
   Main Content Area
   ============================================ */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ============================================
   Matrix Controls / Toolbar
   ============================================ */
.matrix-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-primary);
}

.search-bar {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.search-bar input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  padding-left: 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: all 0.2s var(--ease-in-out);
}

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

.search-bar input:hover {
  border-color: var(--border-secondary);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--mitre-blue);
  box-shadow: 0 0 0 3px var(--mitre-blue-bg), var(--shadow-md);
}

.search-bar .search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  transition: color 0.2s;
}

.search-bar input:focus + .search-icon,
.search-bar input:focus ~ .search-icon {
  color: var(--mitre-blue);
}

/* Search Filters */
.search-filters {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all 0.2s var(--ease-in-out);
}

.filter-btn:hover {
  border-color: var(--border-secondary);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--mitre-blue-bg);
  border-color: var(--mitre-blue);
  color: var(--mitre-blue);
}

/* Stats Counter */
.stats-bar {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-left: auto;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat-value {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   Matrix Grid
   ============================================ */
.matrix-scroll-area {
  flex: 1;
  overflow: auto;
  padding: var(--space-6);
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
}

.matrix-grid {
  display: inline-flex;
  gap: var(--space-4);
  min-width: 100%;
  padding-bottom: var(--space-4);
}

/* Tactic Columns */
.tactic-column {
  width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tactic-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: var(--space-4);
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.2s var(--ease-in-out);
}

.tactic-header:hover {
  box-shadow: var(--shadow-md);
}

.tactic-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.tactic-id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.tactic-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: var(--space-1) var(--space-2);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
}

/* Tactic Color Coding */
.tactic-column[data-tactic="reconnaissance"] .tactic-header { border-top: 3px solid var(--tactic-recon); }
.tactic-column[data-tactic="resource-development"] .tactic-header { border-top: 3px solid var(--tactic-resource); }
.tactic-column[data-tactic="initial-access"] .tactic-header { border-top: 3px solid var(--tactic-initial-access); }
.tactic-column[data-tactic="execution"] .tactic-header { border-top: 3px solid var(--tactic-execution); }
.tactic-column[data-tactic="persistence"] .tactic-header { border-top: 3px solid var(--tactic-persistence); }
.tactic-column[data-tactic="privilege-escalation"] .tactic-header { border-top: 3px solid var(--tactic-privilege); }
.tactic-column[data-tactic="defense-evasion"] .tactic-header { border-top: 3px solid var(--tactic-defense); }
.tactic-column[data-tactic="credential-access"] .tactic-header { border-top: 3px solid var(--tactic-credential); }
.tactic-column[data-tactic="discovery"] .tactic-header { border-top: 3px solid var(--tactic-discovery); }
.tactic-column[data-tactic="lateral-movement"] .tactic-header { border-top: 3px solid var(--tactic-lateral); }
.tactic-column[data-tactic="collection"] .tactic-header { border-top: 3px solid var(--tactic-collection); }
.tactic-column[data-tactic="command-and-control"] .tactic-header { border-top: 3px solid var(--tactic-c2); }
.tactic-column[data-tactic="exfiltration"] .tactic-header { border-top: 3px solid var(--tactic-exfil); }
.tactic-column[data-tactic="impact"] .tactic-header { border-top: 3px solid var(--tactic-impact); }

/* ============================================
   Technique Cards
   ============================================ */
.technique-card {
  position: relative;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
  overflow: hidden;
}

.technique-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--mitre-blue);
  opacity: 0;
  transition: opacity 0.2s;
}

.technique-card:hover {
  border-color: var(--mitre-blue);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.technique-card:hover::before {
  opacity: 1;
}

.technique-card:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.technique-card.filtered {
  opacity: 0.25;
  pointer-events: none;
  transform: scale(0.98);
}

.technique-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-1);
}

.technique-id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.sub-indicator {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  display: flex;
  align-items: center;
  gap: 3px;
}

.sub-indicator span {
  width: 5px;
  height: 5px;
  background: var(--border-secondary);
  border-radius: var(--radius-full);
  transition: background 0.2s;
}

.technique-card:hover .sub-indicator span {
  background: var(--mitre-blue);
}

/* Rule Count Badge on Card */
.technique-rules-count {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: var(--success-bg);
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 600;
  color: var(--success);
}

/* ============================================
   Sidebar / Detail Panel
   ============================================ */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--ease-out);
}

.sidebar-overlay.open {
  opacity: 1;
  visibility: visible;
}

.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--sidebar-width);
  max-width: 90vw;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-left: 1px solid var(--border-primary);
  box-shadow: var(--shadow-2xl);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease-out);
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar-header {
  position: relative;
  padding: var(--space-6);
  background: linear-gradient(135deg, var(--mitre-blue-bg) 0%, transparent 100%);
  border-bottom: 1px solid var(--border-primary);
}

.sidebar-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--text-xl);
  transition: all 0.2s var(--ease-in-out);
}

.sidebar-close:hover {
  background: var(--danger-bg);
  color: var(--danger);
}

.sidebar-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.sidebar-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--leading-tight);
}

.sidebar-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
}

/* ============================================
   Badges
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s var(--ease-in-out);
}

.badge.primary {
  background: var(--mitre-blue-bg);
  border-color: var(--mitre-blue);
  color: var(--mitre-blue);
}

.badge.success {
  background: var(--success-bg);
  border-color: var(--success);
  color: var(--success);
}

.badge.warning {
  background: var(--warning-bg);
  border-color: var(--warning);
  color: var(--warning);
}

.badge.danger {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
}

/* SIEM Badges */
.badge.splunk {
  background: var(--splunk-green-bg);
  border-color: var(--splunk-green);
  color: var(--splunk-green);
}

.badge.sentinel {
  background: var(--sentinel-purple-bg);
  border-color: var(--sentinel-purple);
  color: var(--sentinel-purple);
}

.badge.qradar {
  background: var(--qradar-blue-bg);
  border-color: var(--qradar-blue);
  color: var(--qradar-blue);
}

.badge.elastic {
  background: var(--elastic-orange-bg);
  border-color: var(--elastic-orange);
  color: var(--elastic-orange);
}

.badge.sigma {
  background: var(--sigma-yellow-bg);
  border-color: var(--sigma-yellow);
  color: var(--sigma-yellow);
}

/* ============================================
   Tabs
   ============================================ */
.tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.tab-btn {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.2s var(--ease-in-out);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--bg-secondary);
  color: var(--mitre-blue);
  box-shadow: var(--shadow-sm);
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s var(--ease-out);
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Details Content
   ============================================ */
#sb-details {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

#sb-details a {
  color: var(--mitre-blue);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}

#sb-details a:hover {
  text-decoration-color: var(--mitre-blue);
}

.details-markdown h3 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
}

.details-markdown h3:first-child {
  margin-top: 0;
}

.details-markdown ul, .details-markdown ol {
  margin-left: var(--space-5);
  margin-bottom: var(--space-4);
}

.details-markdown li {
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
}

.details-markdown strong {
  color: var(--danger);
  font-weight: 600;
}

.details-markdown code {
  padding: 2px var(--space-2);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--mitre-blue);
}

/* Subtechniques */
#sb-subtechniques {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

#sb-subtechniques .badge {
  cursor: pointer;
}

#sb-subtechniques .badge:hover {
  background: var(--mitre-blue-bg);
  border-color: var(--mitre-blue);
  color: var(--mitre-blue);
}

/* ============================================
   Code Blocks
   ============================================ */
.code-block {
  position: relative;
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-lang {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--code-text);
  opacity: 0.7;
}

.code-lang::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--text-muted);
}

/* SIEM-specific code block colors */
.code-block[data-siem="splunk"] .code-lang::before { background: var(--splunk-green); }
.code-block[data-siem="sentinel"] .code-lang::before { background: var(--sentinel-purple); }
.code-block[data-siem="qradar"] .code-lang::before { background: var(--qradar-blue); }
.code-block[data-siem="elastic"] .code-lang::before { background: var(--elastic-orange); }
.code-block[data-siem="sigma"] .code-lang::before { background: var(--sigma-yellow); }

.code-content {
  padding: var(--space-4);
  overflow-x: auto;
}

.code-content pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--code-text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Copy Button */
.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--code-text);
  opacity: 0.7;
  transition: all 0.2s var(--ease-in-out);
}

.copy-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.15);
}

.copy-btn.copied {
  background: var(--success-bg);
  color: var(--success);
  opacity: 1;
}

/* Syntax Highlighting */
.code-content .keyword { color: var(--code-keyword); }
.code-content .string { color: var(--code-string); }
.code-content .number { color: var(--code-number); }
.code-content .function { color: var(--code-function); }
.code-content .operator { color: var(--code-operator); }
.code-content .comment { color: var(--code-comment); font-style: italic; }
.code-content .variable { color: var(--code-variable); }

/* Rule Block (Legacy Support) */
.rule-block {
  background: var(--code-bg);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--code-text);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

/* ============================================
   Cards
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

.card {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all 0.3s var(--ease-out);
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: var(--border-secondary);
}

.card-header {
  position: relative;
  padding: var(--space-5);
  background: linear-gradient(135deg, var(--mitre-blue-bg) 0%, transparent 100%);
  border-bottom: 1px solid var(--border-primary);
}

.card-header h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  position: relative;
  padding: var(--space-5);
}

.card-footer {
  position: relative;
  padding: var(--space-4) var(--space-5);
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s var(--ease-in-out);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn:hover::before {
  opacity: 1;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--mitre-blue) 0%, var(--mitre-blue-dark) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(0, 91, 148, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(0, 91, 148, 0.4);
  transform: translateY(-1px);
}

/* Secondary Button */
.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-primary);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--border-secondary);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-primary);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-secondary);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Icon Button */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* SIEM Buttons */
.btn-splunk {
  background: linear-gradient(135deg, var(--splunk-green) 0%, var(--splunk-green-light) 100%);
  color: white;
}

.btn-sentinel {
  background: linear-gradient(135deg, var(--sentinel-purple) 0%, var(--sentinel-purple-light) 100%);
  color: white;
}

.btn-qradar {
  background: linear-gradient(135deg, var(--qradar-blue) 0%, var(--qradar-blue-light) 100%);
  color: white;
}

.btn-elastic {
  background: linear-gradient(135deg, var(--elastic-orange) 0%, var(--elastic-orange-light) 100%);
  color: white;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-label .required {
  color: var(--danger);
  margin-left: var(--space-1);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: all 0.2s var(--ease-in-out);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control:hover {
  border-color: var(--border-secondary);
}

.form-control:focus {
  outline: none;
  border-color: var(--mitre-blue);
  box-shadow: 0 0 0 3px var(--mitre-blue-bg);
}

textarea.form-control {
  min-height: 140px;
  font-family: var(--font-mono);
  resize: vertical;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

/* Query Block Styling */
.query-block {
  position: relative;
  padding: var(--space-5);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.query-block:hover {
  border-color: var(--border-secondary);
}

.remove-query {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--danger-bg);
  border-radius: var(--radius-md);
  color: var(--danger);
  font-size: var(--text-lg);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
}

.remove-query:hover {
  background: var(--danger);
  color: white;
}

/* ============================================
   Page Headers
   ============================================ */
.page-header {
  text-align: center;
  margin-bottom: var(--space-10);
  padding: var(--space-6) 0;
}

.page-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--mitre-blue) 0%, var(--mitre-blue-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* ============================================
   Loading States
   ============================================ */
/* Skeleton Loading */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  animation: skeleton-shimmer 1.5s infinite;
}

[data-theme="dark"] .skeleton::after {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 100%
  );
}

@keyframes skeleton-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton-card {
  height: 120px;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--mitre-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.loading-content {
  text-align: center;
}

.loading-content .spinner {
  width: 48px;
  height: 48px;
  border-width: 3px;
  margin-bottom: var(--space-4);
}

.loading-content p {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  animation: toast-in 0.3s var(--ease-out);
}

.toast.toast-out {
  animation: toast-out 0.3s var(--ease-in-out) forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

.toast-success {
  border-left: 4px solid var(--success);
}

.toast-error {
  border-left: 4px solid var(--danger);
}

.toast-warning {
  border-left: 4px solid var(--warning);
}

.toast-info {
  border-left: 4px solid var(--info);
}

/* ============================================
   Tooltips
   ============================================ */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--space-2) var(--space-3);
  background: var(--text-primary);
  color: var(--text-inverse);
  font-size: var(--text-xs);
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s var(--ease-out);
  pointer-events: none;
  z-index: 100;
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-4px);
}

/* ============================================
   Empty States
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--text-secondary);
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  color: var(--text-muted);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.empty-state-desc {
  font-size: var(--text-sm);
  max-width: 400px;
  margin: 0 auto;
}

/* ============================================
   Animations & Micro-interactions
   ============================================ */
/* Pulse effect */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Bounce */
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.bounce {
  animation: bounce 1s ease infinite;
}

/* Scale on hover */
.hover-scale {
  transition: transform 0.2s var(--ease-out);
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* Lift on hover */
.hover-lift {
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Glow effect */
.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* Ripple effect */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
}

.ripple:active::after {
  animation: ripple-effect 0.6s ease-out;
}

@keyframes ripple-effect {
  0% {
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    width: 200%;
    height: 200%;
    opacity: 0;
  }
}

/* ============================================
   Utility Classes
   ============================================ */
/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox */
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Spacing */
.p-0 { padding: 0; }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.m-0 { margin: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

/* Typography */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--text-primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-mitre { color: var(--mitre-blue); }

/* Borders */
.border { border: 1px solid var(--border-primary); }
.border-t { border-top: 1px solid var(--border-primary); }
.border-b { border-bottom: 1px solid var(--border-primary); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Width/Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Cursor */
.cursor-pointer { cursor: pointer; }

/* Opacity */
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

/* Transitions */
.transition { transition: all 0.2s var(--ease-in-out); }
.transition-fast { transition: all 0.1s var(--ease-in-out); }
.transition-slow { transition: all 0.3s var(--ease-out); }

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1280px) {
  .container {
    padding: var(--space-5);
  }

  .tactic-column {
    width: 220px;
  }
}

@media (max-width: 1024px) {
  .stats-bar {
    display: none;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
    --sidebar-width: 100%;
  }

  header {
    padding: 0 var(--space-4);
  }

  .logo {
    font-size: var(--text-lg);
  }

  .nav-text {
    display: none;
  }

  nav {
    gap: 0;
  }

  .nav-link {
    padding: var(--space-2);
  }

  .nav-link span {
    display: none;
  }

  .matrix-controls {
    flex-wrap: wrap;
    padding: var(--space-3) var(--space-4);
  }

  .search-bar {
    max-width: 100%;
    order: 1;
    width: 100%;
  }

  .search-filters {
    order: 2;
    width: 100%;
    margin-top: var(--space-3);
  }

  .tactic-column {
    width: 200px;
  }

  .container {
    padding: var(--space-4);
  }

  .page-header {
    margin-bottom: var(--space-6);
    padding: var(--space-4) 0;
  }

  .page-title {
    font-size: var(--text-2xl);
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .sidebar {
    width: 100%;
    max-width: 100%;
  }

  .sidebar-header {
    padding: var(--space-4);
  }

  .sidebar-title {
    font-size: var(--text-xl);
  }

  .sidebar-content {
    padding: var(--space-4);
  }

  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }

  .toast {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .tactic-column {
    width: 180px;
  }

  .technique-card {
    padding: var(--space-2) var(--space-3);
  }

  .btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
  }

  .form-control {
    padding: var(--space-2) var(--space-3);
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  header,
  .matrix-controls,
  .sidebar-overlay,
  .sidebar,
  .toast-container {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .code-block {
    background: #f5f5f5;
    color: #333;
  }
}

/* ============================================
   Accessibility
   ============================================ */
/* Focus Visible */
:focus-visible {
  outline: 2px solid var(--mitre-blue);
  outline-offset: 2px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: var(--space-3) var(--space-4);
  background: var(--mitre-blue);
  color: white;
  font-weight: 600;
  z-index: 9999;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-primary: #000;
    --border-secondary: #000;
  }

  .card,
  .technique-card,
  .btn {
    border-width: 2px;
  }
}

/* ============================================
   Header Actions & Stats
   ============================================ */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.stats-mini {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
}

.stat-number {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--mitre-blue);
}

.stat-label {
  color: var(--text-muted);
  font-weight: 500;
}

/* Theme Toggle */
.theme-toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all 0.3s var(--ease-out);
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--mitre-blue);
  border-color: var(--mitre-blue);
  transform: rotate(15deg);
}

.theme-toggle .sun-icon {
  display: block;
}

.theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: block;
}

/* ============================================
   Filter Pills
   ============================================ */
.filter-pills {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
  white-space: nowrap;
}

.filter-pill:hover {
  border-color: var(--border-secondary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.filter-pill.active {
  background: var(--mitre-blue-bg);
  border-color: var(--mitre-blue);
  color: var(--mitre-blue);
}

.filter-pill .icon {
  width: 14px;
  height: 14px;
}

/* SIEM Dots */
.siem-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.siem-dot.sentinel { background: var(--sentinel-purple); }
.siem-dot.splunk { background: var(--splunk-green); }
.siem-dot.qradar { background: var(--qradar-blue); }
.siem-dot.elastic { background: var(--elastic-orange); }
.siem-dot.sigma { background: var(--sigma-yellow); }

.filter-pill.siem-filter.active .siem-dot.sentinel { box-shadow: 0 0 8px var(--sentinel-purple); }
.filter-pill.siem-filter.active .siem-dot.splunk { box-shadow: 0 0 8px var(--splunk-green); }
.filter-pill.siem-filter.active .siem-dot.qradar { box-shadow: 0 0 8px var(--qradar-blue); }
.filter-pill.siem-filter.active .siem-dot.elastic { box-shadow: 0 0 8px var(--elastic-orange); }
.filter-pill.siem-filter.active .siem-dot.sigma { box-shadow: 0 0 8px var(--sigma-yellow); }

/* Search Shortcut */
.search-shortcut {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  padding: 2px 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-bar input:focus ~ .search-shortcut {
  opacity: 0;
}

/* Loading Placeholder */
.loading-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-16);
  color: var(--text-muted);
}

/* ============================================
   Enhanced Sidebar
   ============================================ */
.sidebar-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
  z-index: 10;
}

.sidebar-close:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
  transform: rotate(90deg);
}

.mitre-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  background: var(--mitre-blue-bg);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--mitre-blue);
  transition: all 0.2s var(--ease-in-out);
}

.mitre-link:hover {
  background: var(--mitre-blue);
  color: white;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--space-2);
  background: var(--bg-primary);
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 600;
}

.tab-btn.active .tab-badge {
  background: var(--mitre-blue-bg);
  color: var(--mitre-blue);
}

/* Details Sections */
.details-section {
  margin-bottom: var(--space-6);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.subtechniques-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Rules Header & Legend */
.rules-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-primary);
}

.siem-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Enhanced Code Block */
.code-block {
  position: relative;
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.code-lang {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.7);
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.08);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.9);
}

.copy-btn.copied {
  background: var(--success-bg);
  color: var(--success);
}

.copy-btn .icon {
  width: 14px;
  height: 14px;
}

/* Technique Card Enhancements */
.technique-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s var(--ease-in-out);
  overflow: hidden;
}

.technique-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--mitre-blue);
  opacity: 0;
  transition: opacity 0.2s;
}

.technique-card:hover {
  border-color: var(--mitre-blue);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--mitre-blue-bg);
  transform: translateY(-2px);
}

.technique-card:hover::before {
  opacity: 1;
}

.technique-card.has-rules {
  border-left: 3px solid var(--success);
}

.technique-card.has-rules::before {
  opacity: 0;
}

.tech-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  line-height: var(--leading-tight);
}

.tech-id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.tech-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
}

.rule-indicators {
  display: flex;
  gap: 3px;
}

.rule-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* ============================================
   Dark Mode Auto-detection
   ============================================ */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-glass: rgba(30, 41, 59, 0.7);
    --bg-glass-heavy: rgba(30, 41, 59, 0.9);

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    --border-primary: #334155;
    --border-secondary: #475569;
    --border-glass: rgba(255, 255, 255, 0.1);

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 60px rgba(0, 91, 148, 0.3);

    --code-bg: #0a0f1a;
  }
}