:root, [data-theme="dark"] {
  --bg-main: #0b0f19;
  --bg-card: #151e2e;
  --bg-card-subtle: #1c273b;
  --bg-card-hover: #233149;
  --border-color: #27354a;
  --border-focus: #3b82f6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  --success: #10b981;
  --success-hover: #059669;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  --purple: #8b5cf6;

  --header-bg: #151e2e;
  --nav-bg: #111827;
  --nav-hover: rgba(255, 255, 255, 0.04);
  --nav-active-bg: rgba(59, 130, 246, 0.12);
  --table-th-bg: #111827;
  --table-hover: rgba(255, 255, 255, 0.03);
  --card-header-bg: rgba(11, 15, 25, 0.4);
  --status-badge-bg: rgba(11, 15, 25, 0.7);
  --slider-bg: #334155;
  --modal-footer-bg: rgba(15, 23, 42, 0.4);
  --camera-card-bg: #090d16;
  --plate-box-bg: rgba(15, 23, 42, 0.85);
  --event-card-bg: rgba(11, 15, 25, 0.6);
  --event-card-hover: rgba(30, 41, 59, 0.9);
  --tooltip-bg: #0f172a;
  --tooltip-text: #f1f5f9;
  --tooltip-border: #334155;
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --theme-toggle-bg: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] {
  --bg-main: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-subtle: #f8fafc;
  --bg-card-hover: #e2e8f0;
  --border-color: #cbd5e1;
  --border-focus: #2563eb;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-glow: rgba(37, 99, 235, 0.2);
  --success: #059669;
  --success-hover: #047857;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --warning: #d97706;
  --purple: #7c3aed;

  --header-bg: #ffffff;
  --nav-bg: #ffffff;
  --nav-hover: rgba(0, 0, 0, 0.04);
  --nav-active-bg: rgba(37, 99, 235, 0.08);
  --table-th-bg: #f8fafc;
  --table-hover: rgba(0, 0, 0, 0.025);
  --card-header-bg: #f8fafc;
  --status-badge-bg: #e2e8f0;
  --slider-bg: #cbd5e1;
  --modal-footer-bg: #f8fafc;
  --camera-card-bg: #ffffff;
  --plate-box-bg: #f8fafc;
  --event-card-bg: #ffffff;
  --event-card-hover: #f1f5f9;
  --tooltip-bg: #1e293b;
  --tooltip-text: #ffffff;
  --tooltip-border: #475569;
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.08);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --theme-toggle-bg: #f1f5f9;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Header */
header {
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-section h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--status-badge-bg);
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.8rem;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #94a3b8;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Theme Toggle Button */
.btn-theme-toggle {
  background: var(--theme-toggle-bg);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-theme-toggle:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* Navigation Bar */
.nav-bar {
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  padding: 0 24px;
  gap: 4px;
  overflow-x: auto;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-link {
  padding: 13px 18px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease-in-out;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-main);
  background-color: var(--nav-hover);
}

.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: var(--nav-active-bg);
  font-weight: 600;
}

/* Main Layout */
main {
  flex: 1;
  padding: 24px;
  max-width: 1560px;
  margin: 0 auto;
  width: 100%;
}

/* Card */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--card-header-bg);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.card-header h2 {
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 20px;
}

/* Buttons */
.btn {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease-in-out;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.78rem;
  border-radius: 4px;
}

.btn-primary { background: var(--primary); color: white; border-color: var(--primary-hover); }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 0 10px var(--primary-glow); }

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

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

.btn-warning { background: var(--warning); color: #000; border-color: #d97706; font-weight: 700; }

.btn-secondary { background: var(--bg-card-subtle); color: var(--text-main); border-color: var(--border-color); }
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--border-focus); }

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-outline:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
}

.input-field, .select-field, .textarea-field {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.15s, background-color 0.2s ease, color 0.2s ease;
}

.input-field:focus, .select-field:focus, .textarea-field:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--primary-glow);
}

.textarea-field {
  resize: vertical;
  min-height: 70px;
}

/* Direction Tags */
.direction-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.direction-entry {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.direction-exit {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.4);
}

.direction-two-way {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.4);
}

/* Modern Toggle Switch */
.switch-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  color: var(--text-main);
}

.switch {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 20px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #334155;
  transition: .2s;
  border-radius: 20px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(18px);
}