/* ============================================================================
   Community LPR - Professional Design System

   Design Principles Applied:
   - Steve Krug: "Don't make me think" - clear visual hierarchy, obvious affordances
   - Jakob Nielsen: Visibility of system status, consistency, error prevention
   - Don Norman: Feedback, constraints, good mappings
   - Dieter Rams: Less but better, good design is as little design as possible
   ============================================================================ */

/* ============================================================================
   Design Tokens
   ============================================================================ */

:root {
  /* Color Palette - Professional and Trustworthy */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  /* Semantic Colors */
  --color-success-50: #ecfdf5;
  --color-success-100: #d1fae5;
  --color-success-200: #a7f3d0;
  --color-success-500: #10b981;
  --color-success-600: #059669;
  --color-success-700: #047857;

  --color-warning-50: #fffbeb;
  --color-warning-100: #fef3c7;
  --color-warning-200: #fde68a;
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  --color-warning-700: #b45309;

  --color-danger-50: #fef2f2;
  --color-danger-100: #fee2e2;
  --color-danger-200: #fecaca;
  --color-danger-500: #ef4444;
  --color-danger-600: #dc2626;
  --color-danger-700: #b91c1c;

  /* Neutral Colors */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-gray-950: #030712;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;

  /* Font Sizes - Perfect Fourth Scale */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */

  /* Spacing - 8px Grid */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows - Subtle depth */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* ============================================================================
     Semantic Theme Variables (Light Mode Default)
     ============================================================================ */
  --bg-primary: var(--color-gray-50);
  --bg-secondary: white;
  --bg-tertiary: var(--color-gray-100);
  --bg-elevated: white;
  --bg-header: var(--color-gray-900);

  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-tertiary: var(--color-gray-500);
  --text-muted: var(--color-gray-400);
  --text-inverted: white;

  --border-primary: var(--color-gray-200);
  --border-secondary: var(--color-gray-100);

  --input-bg: white;
  --input-border: var(--color-gray-300);
  --input-focus-ring: var(--color-primary-100);

  --code-bg: var(--color-gray-100);
  --code-text: var(--color-gray-800);
  --pre-bg: var(--color-gray-900);
  --pre-text: var(--color-gray-100);

  color-scheme: light;
}

/* ============================================================================
   Dark Mode Theme
   Shared variables for both system preference and explicit override
   ============================================================================ */

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: var(--color-gray-950);
    --bg-secondary: var(--color-gray-900);
    --bg-tertiary: var(--color-gray-800);
    --bg-elevated: var(--color-gray-800);
    --bg-header: var(--color-gray-950);
    --text-primary: var(--color-gray-50);
    --text-secondary: var(--color-gray-300);
    --text-tertiary: var(--color-gray-400);
    --text-muted: var(--color-gray-500);
    --text-inverted: var(--color-gray-900);
    --border-primary: var(--color-gray-700);
    --border-secondary: var(--color-gray-800);
    --input-bg: var(--color-gray-800);
    --input-border: var(--color-gray-600);
    --input-focus-ring: rgba(59, 130, 246, 0.3);
    --code-bg: var(--color-gray-800);
    --code-text: var(--color-gray-200);
    --pre-bg: var(--color-gray-950);
    --pre-text: var(--color-gray-200);
    --color-success-50: rgba(16, 185, 129, 0.1);
    --color-success-100: rgba(16, 185, 129, 0.2);
    --color-warning-50: rgba(245, 158, 11, 0.1);
    --color-warning-100: rgba(245, 158, 11, 0.2);
    --color-danger-50: rgba(239, 68, 68, 0.1);
    --color-danger-100: rgba(239, 68, 68, 0.2);
    --color-primary-50: rgba(59, 130, 246, 0.1);
    --color-primary-100: rgba(59, 130, 246, 0.2);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.4);
    color-scheme: dark;
  }
}

/* Manual dark mode override (shares same values as system preference) */
:root[data-theme="dark"] {
  --bg-primary: var(--color-gray-950);
  --bg-secondary: var(--color-gray-900);
  --bg-tertiary: var(--color-gray-800);
  --bg-elevated: var(--color-gray-800);
  --bg-header: var(--color-gray-950);
  --text-primary: var(--color-gray-50);
  --text-secondary: var(--color-gray-300);
  --text-tertiary: var(--color-gray-400);
  --text-muted: var(--color-gray-500);
  --text-inverted: var(--color-gray-900);
  --border-primary: var(--color-gray-700);
  --border-secondary: var(--color-gray-800);
  --input-bg: var(--color-gray-800);
  --input-border: var(--color-gray-600);
  --input-focus-ring: rgba(59, 130, 246, 0.3);
  --code-bg: var(--color-gray-800);
  --code-text: var(--color-gray-200);
  --pre-bg: var(--color-gray-950);
  --pre-text: var(--color-gray-200);
  --color-success-50: rgba(16, 185, 129, 0.1);
  --color-success-100: rgba(16, 185, 129, 0.2);
  --color-warning-50: rgba(245, 158, 11, 0.1);
  --color-warning-100: rgba(245, 158, 11, 0.2);
  --color-danger-50: rgba(239, 68, 68, 0.1);
  --color-danger-100: rgba(239, 68, 68, 0.2);
  --color-primary-50: rgba(59, 130, 246, 0.1);
  --color-primary-100: rgba(59, 130, 246, 0.2);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.4);
  color-scheme: dark;
}

/* ============================================================================
   Base Styles & Reset
   ============================================================================ */

*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================================================
   Typography
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }

p {
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
}

a {
  color: var(--color-primary-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-400);
}

small {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* ============================================================================
   Header & Navigation
   ============================================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-primary);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.brand-icon {
  width: 32px;
  height: 32px;
}

.brand-text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: white;
  letter-spacing: -0.01em;
}

/* Navigation */
.nav-main {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  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(--color-gray-300);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
  color: white;
  background: rgba(255, 255, 255, 0.15);
}

.nav-link svg {
  width: 18px;
  height: 18px;
  opacity: 0.8;
}

/* User Section */
.header-user {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.user-info {
  text-align: right;
}

.user-community {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary-200);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.user-email {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  padding: var(--space-2);
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* Show hamburger icon by default, hide close icon */
.mobile-menu-toggle .icon-close {
  display: none;
}

/* When menu is open, show close icon, hide hamburger */
.mobile-menu-toggle[aria-expanded="true"] .icon-menu {
  display: none;
}

.mobile-menu-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

/* ============================================================================
   Main Content
   ============================================================================ */

.main-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  min-height: calc(100vh - 64px - 80px);
}

/* Page Header */
.page-header {
  margin-bottom: var(--space-8);
}

.page-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.page-description {
  font-size: var(--text-lg);
  color: var(--text-tertiary);
  margin: 0;
}

/* ============================================================================
   Cards & Sections
   ============================================================================ */

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-secondary);
}

.card-header h1,
.card-header h2,
.card-header h3 {
  margin-bottom: 0;
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-secondary);
}

/* Section - Semantic grouping */
section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

section h1:first-child,
section h2:first-child {
  margin-top: 0;
}

/* Section Header with border */
.section-header {
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-secondary);
}

.section-header h2 {
  margin-bottom: var(--space-1);
}

.section-header p {
  color: var(--text-tertiary);
  margin: 0;
}

/* Subsection */
.subsection {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-secondary);
}

.subsection:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

/* ============================================================================
   Tables - Professional Data Display
   ============================================================================ */

.table-container {
  overflow-x: auto;
  margin: 0 calc(var(--space-6) * -1);
  padding: 0 var(--space-6);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

thead {
  position: sticky;
  top: 0;
  background: var(--bg-tertiary);
  z-index: 1;
}

thead th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  border-bottom: 2px solid var(--border-primary);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border-secondary);
  transition: background var(--transition-fast);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-primary-50);
}

tbody td {
  padding: var(--space-4);
  vertical-align: middle;
  color: var(--text-secondary);
}

/* Clickable rows */
tbody tr.clickable {
  cursor: pointer;
}

/* Table cell variants */
td.cell-primary {
  font-weight: 500;
  color: var(--text-primary);
}

td.cell-mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

td.cell-muted {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

td.cell-actions {
  text-align: right;
  white-space: nowrap;
}

/* ============================================================================
   Plate Number - High visibility display
   ============================================================================ */

.plate {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-gray-900);
  color: white;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.plate-empty {
  background: var(--color-gray-100);
  color: var(--color-gray-400);
  font-weight: 500;
  letter-spacing: 0;
}

/* Dark mode plate visibility improvements */
[data-theme="dark"] .plate {
  background: var(--color-gray-700);
  border: 1px solid var(--color-gray-600);
  color: var(--color-gray-50);
}

[data-theme="dark"] .plate-empty {
  background: var(--color-gray-700);
  color: var(--color-gray-400);
  border: 1px solid var(--color-gray-600);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .plate {
    background: var(--color-gray-700);
    border: 1px solid var(--color-gray-600);
    color: var(--color-gray-50);
  }

  :root:not([data-theme="light"]) .plate-empty {
    background: var(--color-gray-700);
    color: var(--color-gray-400);
    border: 1px solid var(--color-gray-600);
  }
}

/* ============================================================================
   Badges & Status Indicators
   ============================================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* Semantic badges */
.badge-success {
  background: var(--color-success-100);
  color: var(--color-success-700);
}

.badge-warning {
  background: var(--color-warning-100);
  color: var(--color-warning-700);
}

.badge-danger {
  background: var(--color-danger-100);
  color: var(--color-danger-700);
}

.badge-neutral {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

.badge-primary {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
}

/* Status dot indicator */
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.status-dot::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.status-dot-active {
  color: var(--color-success-500);
}

.status-dot-pending {
  color: var(--color-warning-500);
}

.status-dot-inactive {
  color: var(--color-gray-400);
}

/* Confidence meter */
.confidence {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
}

.confidence-bar {
  width: 48px;
  height: 6px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.confidence-high { color: var(--color-success-600); }
.confidence-high .confidence-fill { background: var(--color-success-500); }

.confidence-medium { color: var(--color-warning-600); }
.confidence-medium .confidence-fill { background: var(--color-warning-500); }

.confidence-low { color: var(--color-danger-600); }
.confidence-low .confidence-fill { background: var(--color-danger-500); }

.confidence-none { color: var(--color-gray-400); }
.confidence-none .confidence-fill { background: var(--color-gray-300); }

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 46px;
  padding: 0 var(--space-5);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

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

/* Primary */
.btn-primary {
  background: var(--color-primary-600);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-700);
  color: white;
}

/* Secondary */
.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-primary);
}

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

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

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

/* Danger */
.btn-danger {
  background: var(--color-danger-600);
  color: white;
}

.btn-danger:hover {
  background: var(--color-danger-700);
  color: white;
}

/* Success */
.btn-success {
  background: var(--color-success-600);
  color: white;
}

.btn-success:hover {
  background: var(--color-success-700);
  color: white;
}

/* Sizes */
.btn-sm {
  height: 32px;
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
}

.btn-lg {
  height: 54px;
  padding: 0 var(--space-6);
  font-size: var(--text-base);
}

/* Icon only */
.btn-icon {
  padding: var(--space-2);
  width: 36px;
  height: 36px;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

/* Button group */
.btn-group {
  display: flex;
  gap: var(--space-3);
}

/* Outline variant */
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  border-color: var(--color-primary-500);
  color: var(--color-primary-600);
}

.btn-outline.active {
  background: var(--color-primary-50);
  border-color: var(--color-primary-500);
  color: var(--color-primary-600);
}

[data-theme="dark"] .btn-outline.active {
  background: var(--color-primary-900);
  color: var(--color-primary-400);
}

/* Quick filters */
.quick-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.quick-filters-label {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-right: var(--space-1);
}

/* Button element defaults (forms without .btn class) */
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 46px;
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0 var(--space-5);
  background: var(--color-primary-600);
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
}

button:hover {
  background: var(--color-primary-700);
}

button.contrast {
  background: var(--color-success-600);
}

button.contrast:hover {
  background: var(--color-success-700);
}

/* ============================================================================
   Forms
   ============================================================================ */

form {
  margin-top: var(--space-4);
}

label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

input,
select,
textarea {
  width: 100%;
  height: 46px;
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  margin-bottom: 0;
}

textarea {
  height: auto;
  min-height: 100px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

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

/* Input with icon */
.input-with-icon {
  position: relative;
}

.input-with-icon input {
  padding-left: var(--space-10);
}

.input-with-icon svg {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--color-gray-400);
}

/* Form grid */
.form-grid {
  display: grid;
  gap: var(--space-5);
}

.form-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.form-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.form-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Form group */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  margin-bottom: 0;
}

/* Required field indicator */
.form-group label.required::after,
label.required::after {
  content: ' *';
  color: var(--color-danger-500);
  font-weight: 600;
}

[data-theme="dark"] .form-group label.required::after,
[data-theme="dark"] label.required::after {
  color: var(--color-danger-400);
}

/* Form row - horizontal layout for inputs and buttons on same line */
.form-row {
  display: flex;
  gap: var(--space-4);
  align-items: flex-end;
}

.form-row .form-group {
  flex: 1;
  min-width: 0;
}

.form-row .btn,
.form-row button {
  flex-shrink: 0;
  height: 46px;
}

/* Form actions */
.form-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-secondary);
}

/* Form actions inline - no border/padding variant */
.form-actions-inline {
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
}

.form-actions-inline .btn,
.form-actions-inline button {
  height: 46px;
}

/* Help text */
.form-help {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

/* Form error messages */
.form-error {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-danger-600);
  margin-top: var(--space-1);
}

[data-theme="dark"] .form-error {
  color: var(--color-danger-400);
}

/* Form group error state */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--color-danger-500);
  background-color: var(--color-danger-50);
}

.form-group.has-error input:focus,
.form-group.has-error select:focus,
.form-group.has-error textarea:focus {
  border-color: var(--color-danger-600);
  box-shadow: 0 0 0 3px var(--color-danger-100);
}

[data-theme="dark"] .form-group.has-error input,
[data-theme="dark"] .form-group.has-error select,
[data-theme="dark"] .form-group.has-error textarea {
  border-color: var(--color-danger-500);
  background-color: rgba(239, 68, 68, 0.1);
}

[data-theme="dark"] .form-group.has-error input:focus,
[data-theme="dark"] .form-group.has-error select:focus,
[data-theme="dark"] .form-group.has-error textarea:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* Pico grid compatibility */
.grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ============================================================================
   Image Links
   ============================================================================ */

.image-links {
  display: flex;
  gap: var(--space-2);
}

.image-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.image-link-primary {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
}

.image-link-primary:hover {
  background: var(--color-primary-200);
  color: var(--color-primary-800);
}

.image-link-secondary {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

.image-link-secondary:hover {
  background: var(--color-gray-200);
  color: var(--color-gray-700);
}

/* ============================================================================
   Empty States
   ============================================================================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  color: var(--text-muted);
}

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

.empty-state-description {
  font-size: var(--text-base);
  color: var(--text-tertiary);
  max-width: 400px;
  margin: 0 0 var(--space-6);
}

/* ============================================================================
   Loading States
   ============================================================================ */

.loading-spinner {
  display: inline-flex;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--color-primary-600);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

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

/* HTMX indicator */
.htmx-indicator {
  opacity: 0;
  transition: opacity var(--transition-base);
}

.htmx-request .htmx-indicator {
  opacity: 1;
}

/* Hide elements during HTMX request */
.htmx-request .htmx-hide-on-request {
  display: none;
}

/* ============================================================================
   Alerts & Notifications
   ============================================================================ */

.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.alert-success {
  background: var(--color-success-50);
  border: 1px solid var(--color-success-200);
  color: var(--color-success-700);
}

.alert-warning {
  background: var(--color-warning-50);
  border: 1px solid var(--color-warning-200);
  color: var(--color-warning-700);
}

.alert-danger {
  background: var(--color-danger-50);
  border: 1px solid var(--color-danger-200);
  color: var(--color-danger-700);
}

.alert-info {
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-200);
  color: var(--color-primary-700);
}

/* ============================================================================
   Code & Pre
   ============================================================================ */

pre {
  background: var(--pre-bg);
  color: var(--pre-text);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

:not(pre) > code {
  background: var(--code-bg);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--code-text);
}

/* ============================================================================
   Footer
   ============================================================================ */

.site-footer {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  border-top: 1px solid var(--border-primary);
  background: var(--bg-secondary);
}

.site-footer p {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  margin: 0;
}

.footer-icon {
  width: 16px;
  height: 16px;
  vertical-align: middle;
  margin-right: var(--space-1);
  color: var(--text-muted);
}

/* ============================================================================
   Login Page
   ============================================================================ */

.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: var(--bg-primary);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.login-header {
  padding: var(--space-8);
  text-align: center;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-secondary);
}

.login-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
}

.login-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.login-subtitle {
  color: var(--text-tertiary);
  margin: 0;
}

.login-body {
  padding: var(--space-8);
}

.login-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.login-btn svg {
  width: 20px;
  height: 20px;
}

.login-error {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--color-danger-50);
  border-radius: var(--radius-md);
  color: var(--color-danger-600);
  font-size: var(--text-sm);
  text-align: center;
}

.login-footer {
  padding: var(--space-6);
  text-align: center;
  border-top: 1px solid var(--border-secondary);
  background: var(--bg-tertiary);
}

.login-footer p {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin: 0;
}

/* ============================================================================
   Stats Cards - Dashboard style
   ============================================================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.stat-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: var(--space-2);
}

.stat-change-up {
  color: var(--color-success-600);
}

.stat-change-down {
  color: var(--color-danger-600);
}

.stat-value-muted {
  color: var(--text-tertiary);
}

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

/* ============================================================================
   Coverage Map Components
   ============================================================================ */

.coverage-map-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  overflow: hidden;
}

.coverage-map-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-secondary);
}

.coverage-map-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.coverage-map-title svg {
  color: var(--color-primary-500);
}

.coverage-stats {
  display: flex;
  gap: var(--space-6);
}

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

.coverage-stat-value {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
}

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

.coverage-map {
  height: 300px;
  width: 100%;
  background: var(--bg-tertiary);
}

.map-legend {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-5);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.legend-marker {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-active {
  background: var(--color-success-500);
}

.legend-inactive {
  background: var(--color-gray-400);
}

.legend-cone {
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 14px solid var(--color-success-500);
  opacity: 0.5;
}

.legend-cone-active {
  border-bottom-color: var(--color-success-500);
}

/* Traffic flow animation */
.traffic-vehicle {
  display: flex;
  align-items: center;
  justify-content: center;
}

.traffic-vehicle .vehicle-body {
  width: 10px;
  height: 5px;
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.traffic-captured .vehicle-body {
  background: var(--color-success-500);
  animation: vehicle-pulse-green 1.2s ease-in-out infinite;
}

.traffic-missed .vehicle-body {
  background: var(--color-danger-500);
  animation: vehicle-pulse-red 1.2s ease-in-out infinite;
}

@keyframes vehicle-pulse-green {
  0%, 100% {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 6px rgba(34, 197, 94, 0.6);
  }
  50% {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 12px rgba(34, 197, 94, 0.9);
  }
}

@keyframes vehicle-pulse-red {
  0%, 100% {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 4px rgba(239, 68, 68, 0.4);
  }
  50% {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 0 8px rgba(239, 68, 68, 0.6);
  }
}

.legend-traffic {
  width: 10px;
  height: 5px;
  border-radius: 2px;
}

.legend-traffic-captured {
  background: var(--color-success-500);
  box-shadow: 0 0 4px rgba(34, 197, 94, 0.6);
}

.legend-traffic-missed {
  background: var(--color-danger-500);
  box-shadow: 0 0 4px rgba(239, 68, 68, 0.4);
}

/* Camera map markers */
.camera-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.camera-marker svg {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.camera-marker-active svg {
  color: var(--color-success-500);
}

.camera-marker-inactive svg {
  color: var(--color-gray-400);
}

/* Leaflet popup styling */
.leaflet-popup-content-wrapper {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.leaflet-popup-content {
  margin: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.leaflet-popup-tip {
  background: var(--bg-secondary);
}

.popup-road {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
}

.popup-direction {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  font-style: italic;
}

.popup-status {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-top: var(--space-1);
}

.popup-active {
  background: var(--color-success-100);
  color: var(--color-success-700);
}

.popup-inactive {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

/* Dark mode adjustments for Leaflet */
[data-theme="dark"] .leaflet-popup-content-wrapper,
[data-theme="dark"] .leaflet-popup-tip {
  background: var(--bg-elevated);
}

[data-theme="dark"] .leaflet-control-zoom a {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-primary);
}

[data-theme="dark"] .leaflet-control-zoom a:hover {
  background: var(--bg-tertiary);
}

[data-theme="dark"] .leaflet-control-attribution {
  background: rgba(0, 0, 0, 0.7);
  color: var(--text-tertiary);
}

[data-theme="dark"] .leaflet-control-attribution a {
  color: var(--color-primary-400);
}

/* System dark mode support */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .leaflet-popup-content-wrapper,
  :root:not([data-theme="light"]) .leaflet-popup-tip {
    background: var(--bg-elevated);
  }

  :root:not([data-theme="light"]) .leaflet-control-zoom a {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-primary);
  }

  :root:not([data-theme="light"]) .leaflet-control-zoom a:hover {
    background: var(--bg-tertiary);
  }

  :root:not([data-theme="light"]) .leaflet-control-attribution {
    background: rgba(0, 0, 0, 0.7);
    color: var(--text-tertiary);
  }

  :root:not([data-theme="light"]) .leaflet-control-attribution a {
    color: var(--color-primary-400);
  }
}

/* Responsive map adjustments */
@media (max-width: 768px) {
  .coverage-map {
    height: 280px;
  }

  .coverage-map-header {
    flex-direction: column;
    gap: var(--space-3);
    align-items: flex-start;
  }

  .coverage-stats {
    gap: var(--space-4);
  }

  .coverage-stat-value {
    font-size: var(--text-base);
  }
}

/* ============================================================================
   Location Picker Components
   ============================================================================ */

/* Address lookup row */
.address-lookup-row {
  display: flex;
  gap: var(--space-3);
}

.address-lookup-row input {
  flex: 1;
}

.address-lookup-row .btn {
  flex-shrink: 0;
  min-width: 100px;
}

.address-lookup-row .btn-loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Lookup status messages */
.lookup-status {
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.lookup-status-info {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  border: 1px solid var(--color-primary-200);
}

.lookup-status-success {
  background: var(--color-success-50);
  color: var(--color-success-700);
  border: 1px solid var(--color-success-200);
}

.lookup-status-error {
  background: var(--color-danger-50);
  color: var(--color-danger-700);
  border: 1px solid var(--color-danger-200);
}

.location-picker {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.location-map {
  height: 300px;
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  background: var(--bg-tertiary);
}

.location-coords {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.location-coords input[readonly] {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: default;
}

/* ============================================================================
   Bearing Picker / Compass Components
   ============================================================================ */

.bearing-picker {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  align-items: start;
}

.compass-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.compass {
  position: relative;
  width: 180px;
  height: 180px;
  cursor: pointer;
}

.compass-ring {
  position: absolute;
  inset: 0;
  border: 3px solid var(--border-primary);
  border-radius: 50%;
  background: var(--bg-secondary);
}

.compass-labels {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.compass-label {
  position: absolute;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-tertiary);
}

.compass-n {
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-danger-500);
}

.compass-e {
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
}

.compass-s {
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
}

.compass-w {
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
}

.compass-arrow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 80px;
  margin-left: -20px;
  margin-top: -60px;
  transform-origin: 50% 75%;
  transition: transform 0.15s ease-out;
  color: var(--color-primary-500);
}

.compass-arrow svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.compass-center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  background: var(--bg-secondary);
  border: 3px solid var(--color-primary-500);
  border-radius: 50%;
  z-index: 1;
}

.bearing-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.quick-bearings {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.quick-bearings .btn {
  min-width: 44px;
}

/* Responsive location picker */
@media (max-width: 768px) {
  .address-lookup-row {
    flex-direction: column;
  }

  .address-lookup-row .btn {
    width: 100%;
  }

  .location-picker {
    grid-template-columns: 1fr;
  }

  .location-coords {
    flex-direction: row;
    gap: var(--space-4);
  }

  .location-coords .form-group {
    flex: 1;
  }

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

  .compass-container {
    order: 2;
  }

  .bearing-controls {
    order: 1;
  }

  .compass {
    width: 150px;
    height: 150px;
  }

  .compass-arrow {
    width: 32px;
    height: 64px;
    margin-left: -16px;
    margin-top: -48px;
  }
}

/* ============================================================================
   Live Feed Components
   ============================================================================ */

.feed-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
  user-select: none;
}

[data-theme="dark"] .toggle-label {
  color: var(--color-neutral-400);
}

.toggle-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary-500);
  cursor: pointer;
}

.toggle-text {
  white-space: nowrap;
}

/* ============================================================================
   Live Feed Indicator
   ============================================================================ */

.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-danger-50);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-danger-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.live-indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-danger-500);
  border-radius: 50%;
  animation: live-pulse 1.5s ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
}

/* Enhanced animation when feed receives new data */
.live-indicator.is-active::before {
  animation: live-pulse-active 0.8s ease-in-out infinite;
}

/* Error state when SSE connection is lost */
.live-indicator.is-error {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
}

.live-indicator.is-error::before {
  background: var(--color-gray-400);
  animation: none;
  box-shadow: none;
}

[data-theme="dark"] .live-indicator.is-error {
  background: var(--color-gray-700);
  color: var(--color-gray-400);
}

[data-theme="dark"] .live-indicator.is-error::before {
  background: var(--color-gray-500);
}

@keyframes live-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.15);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0);
  }
}

@keyframes live-pulse-active {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.3);
    box-shadow: 0 0 8px 6px rgba(239, 68, 68, 0);
  }
}

/* ============================================================================
   Utility Classes
   ============================================================================ */

/* Text utilities */
.text-muted { color: var(--text-tertiary); }
.text-small { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-uppercase { text-transform: uppercase; letter-spacing: 0.05em; }
.text-label-hint { font-weight: normal; font-size: 0.85em; }

/* Font utilities */
.font-mono { font-family: var(--font-mono); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-normal { font-weight: 400; }

/* Flexbox utilities */
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-2 { flex: 2; }
.flex-fixed-sm { flex: 0 0 120px; }

/* Icon utilities (for inline SVG icons in headings) */
.icon-inline {
  vertical-align: -3px;
  margin-right: var(--space-2);
  color: var(--text-muted);
}

/* Position utilities */
.pos-top-right {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
}

/* Display utilities */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-gray-400);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

/* Theme toggle icons - JavaScript controlled via data-theme attribute */
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

/* Light mode: show moon icon (click to go dark) */
.theme-toggle .icon-moon {
  display: block;
}

/* Dark mode: show sun icon (click to go light) */
[data-theme="dark"] .theme-toggle .icon-moon {
  display: none !important;
}

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

/* System dark mode preference (when no explicit theme) */
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: none;
  }
  html:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: block;
  }
}

/* System light mode + explicit light mode */
[data-theme="light"] .theme-toggle .icon-sun {
  display: none !important;
}

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

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }

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

/* Inline form */
.inline-form {
  display: inline;
}

/* ============================================================================
   Accessibility - Focus States
   ============================================================================ */

/* Focus-visible for keyboard navigation (WCAG 2.4.7) */
.btn:focus-visible,
button:focus-visible,
.nav-link:focus-visible,
.theme-toggle:focus-visible,
.login-btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Ensure links have visible focus */
a:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Image links need clear focus */
.image-link:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Modal buttons focus */
.modal-actions .btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Header nav links - visible on dark background */
.site-header .nav-link:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

.site-header .theme-toggle:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

/* Mobile menu toggle focus */
.mobile-menu-toggle:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

/* Quick filters button focus */
.quick-filters .btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Compass interaction focus */
.compass:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 4px;
  border-radius: 50%;
}

/* Badge link focus */
.badge:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

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

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 1024px) {
  .form-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 var(--space-4);
  }

  .nav-main {
    display: none;
  }

  .nav-main.is-open {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-header);
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-primary);
    gap: var(--space-2);
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .header-user .user-info {
    display: none;
  }

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

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

  section {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }

  .form-grid-2,
  .form-grid-3,
  .form-grid-4 {
    grid-template-columns: 1fr;
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions button {
    width: 100%;
  }

  table {
    font-size: var(--text-xs);
  }

  thead th,
  tbody td {
    padding: var(--space-2) var(--space-3);
  }

  .plate {
    font-size: var(--text-sm);
    padding: var(--space-1) var(--space-2);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .image-links {
    flex-direction: column;
    gap: var(--space-1);
  }

  /* Hide non-essential columns on mobile */
  .hide-mobile {
    display: none;
  }

  /* Mobile card layout for event tables */
  .desktop-table {
    display: none;
  }

  .mobile-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  .event-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
  }

  .event-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-2);
  }

  .event-card-plate {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    font-weight: 600;
    letter-spacing: 0.05em;
  }

  .event-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-3);
  }

  .event-card-meta-separator {
    color: var(--border-secondary);
  }

  .event-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .event-card-images {
    display: flex;
    gap: var(--space-2);
  }
}

/* Desktop table visibility */
@media (min-width: 769px) {
  .mobile-cards {
    display: none;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .btn-group {
    flex-direction: column;
  }

  .login-card {
    border-radius: 0;
    min-height: 100vh;
  }
}

/* ============================================================================
   Confirmation Modal
   ============================================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  max-width: 400px;
  width: 90%;
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.modal-overlay.is-visible .modal-dialog {
  transform: scale(1);
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-2) 0;
}

.modal-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0 0 var(--space-6) 0;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

.modal-actions .btn {
  min-width: 100px;
}