/* ==========================================================================
   DNH Checkin & Line Alert - Modern Dashboard Theme System
   Dual-Theme Engine: Dark Mode (Default) & Light Mode (Eye-Care Minimalist)
   ========================================================================== */

/* 1. Root Theme Tokens (Dark Mode Default) */
:root,
[data-theme="dark"] {
  --bg-app: #0b0f19;
  --bg-nav: #111827;
  --bg-card: #151d2c;
  --bg-card-hover: #1b2538;
  --bg-input: #0e1420;
  --bg-badge: #1f293d;
  --bg-modal-overlay: rgba(5, 8, 15, 0.85);

  --border-color: #232f45;
  --border-light: #1c2638;
  --border-focus: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-green: #10b981;
  --accent-green-bright: #34d399;
  --accent-green-bg: rgba(16, 185, 129, 0.12);
  --accent-orange: #f59e0b;
  --accent-orange-bg: rgba(245, 158, 11, 0.12);
  --accent-red: #ef4444;
  --accent-red-bg: rgba(239, 68, 68, 0.12);
  --accent-blue-bg: rgba(59, 130, 246, 0.12);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.55);
  --video-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

/* 2. Light Mode Tokens (Clean, Airy, Eye-Friendly Porcelain) */
[data-theme="light"] {
  --bg-app: #f4f6f9;
  --bg-nav: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-input: #f8fafc;
  --bg-badge: #eef2f6;
  --bg-modal-overlay: rgba(15, 23, 42, 0.6);

  --border-color: #e2e8f0;
  --border-light: #edf2f7;
  --border-focus: #2563eb;

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

  --accent-primary: #2563eb;
  --accent-primary-hover: #1d4ed8;
  --accent-green: #059669;
  --accent-green-bright: #10b981;
  --accent-green-bg: rgba(5, 150, 105, 0.1);
  --accent-orange: #d97706;
  --accent-orange-bg: rgba(217, 119, 6, 0.1);
  --accent-red: #dc2626;
  --accent-red-bg: rgba(220, 38, 38, 0.1);
  --accent-blue-bg: rgba(37, 99, 235, 0.1);

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --video-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}

/* 3. Base Reset & Smooth Typography */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s ease, color 0.25s ease;
  -webkit-font-smoothing: antialiased;
}

/* 4. Top Navigation Bar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background-color: var(--bg-nav);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  transition: background-color 0.25s ease, border-color 0.25s ease;
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #2563eb, #10b981);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  flex-shrink: 0;
}

.brand-title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--text-primary);
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Theme Toggle Button */
.btn-theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  background-color: var(--bg-badge);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-theme-toggle:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

[data-theme="dark"] .sun-icon { display: inline-block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: inline-block; }

/* Status Pill */
.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 500;
  background-color: var(--bg-badge);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--accent-green-bright);
  box-shadow: 0 0 10px var(--accent-green-bright);
  animation: pulse-green 2s infinite ease-in-out;
}

.status-pill.offline .status-dot {
  background-color: var(--accent-red);
  box-shadow: 0 0 10px var(--accent-red);
  animation: pulse-red 2s infinite ease-in-out;
}

@keyframes pulse-green {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

@keyframes pulse-red {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

/* 5. Buttons Design System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.btn-primary {
  background-color: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

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

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

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

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

.btn-danger {
  background-color: var(--accent-red-bg);
  color: var(--accent-red);
  border-color: rgba(239, 68, 68, 0.3);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* 6. Main Content Area */
.main-content {
  flex: 1;
  padding: 24px 28px;
  max-width: 1680px;
  margin: 0 auto;
  width: 100%;
}

/* Stats Overview Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-focus);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.icon-total { background-color: var(--accent-blue-bg); }
.icon-person { background-color: var(--accent-green-bg); }
.icon-vehicle { background-color: var(--accent-orange-bg); }
.icon-cooldown { background-color: var(--bg-badge); }

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.86rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  margin-top: 2px;
  line-height: 1.2;
}

/* 7. Workspace Layout */
.workspace-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 24px;
}

@media (max-width: 1180px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }
}

/* Card Container */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.card-header {
  padding: 16px 22px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background-color: var(--bg-card);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.live-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--accent-red);
  box-shadow: 0 0 10px var(--accent-red);
  animation: pulse-red 1.8s infinite;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 8. Video Player & ROI Container */
.video-wrapper {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.video-container {
  position: relative;
  width: 100%;
  background-color: #000000;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--video-shadow);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-player {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.roi-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  z-index: 10;
}

.roi-help-banner {
  background-color: var(--accent-blue-bg);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 0.86rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.video-info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: var(--bg-badge);
  border-radius: var(--radius-md);
  font-size: 0.84rem;
  color: var(--text-secondary);
  gap: 16px;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.info-value {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  font-weight: 500;
}

/* 9. Live Real-time Feed Column */
.feed-section {
  display: flex;
  flex-direction: column;
  max-height: 820px;
}

.feed-container {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Custom Sleek Scrollbar */
.feed-container::-webkit-scrollbar {
  width: 6px;
}

.feed-container::-webkit-scrollbar-track {
  background: transparent;
}

.feed-container::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: var(--radius-full);
}

.feed-card {
  background-color: var(--bg-card-hover);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  gap: 14px;
  align-items: center;
  transition: all 0.2s ease;
  animation: slide-in 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.feed-card:hover {
  border-color: var(--border-focus);
  transform: translateX(3px);
}

.feed-snapshot-thumb {
  width: 78px;
  height: 58px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.feed-snapshot-thumb:hover {
  transform: scale(1.05);
}

.feed-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.feed-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.feed-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-person {
  background-color: var(--accent-green-bg);
  color: var(--accent-green-bright);
}

.badge-car,
.badge-truck,
.badge-bus {
  background-color: var(--accent-orange-bg);
  color: var(--accent-orange);
}

.feed-time {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.feed-detail {
  font-size: 0.85rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feed-meta {
  font-size: 0.78rem;
  color: var(--text-secondary);
  display: flex;
  gap: 12px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  text-align: center;
  gap: 12px;
}

.empty-icon {
  font-size: 2.5rem;
  opacity: 0.6;
}

/* 10. History Log Table Section */
.history-section {
  margin-top: 24px;
}

.table-responsive {
  overflow-x: auto;
  padding: 10px 18px 18px;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.history-table th {
  padding: 12px 14px;
  color: var(--text-secondary);
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.history-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  vertical-align: middle;
}

.history-table tr:hover td {
  background-color: var(--bg-card-hover);
}

.table-thumb {
  width: 52px;
  height: 38px;
  border-radius: 4px;
  object-fit: cover;
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: transform 0.2s ease;
}

.table-thumb:hover {
  transform: scale(1.1);
}

/* 11. Modal Popup Dialogs */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-modal-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.22s ease-out;
}

.modal.open,
.modal.active {
  display: flex;
  opacity: 1;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.modal-dialog {
  position: relative;
  z-index: 10;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 650px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal.open .modal-dialog,
.modal.active .modal-dialog {
  transform: scale(1) translateY(0);
}

.modal-content {
  display: flex;
  flex-direction: column;
  max-height: 88vh;
  overflow: hidden;
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-close {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  transition: color 0.2s ease;
}

.btn-close:hover {
  color: var(--accent-red);
}

.modal-body {
  padding: 22px 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  background-color: var(--bg-card);
}

/* 12. Form Controls */
.form-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.section-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 6px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-select,
textarea.form-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-input);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus,
textarea.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-blue-bg);
}

.help-text {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 8px 0;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  cursor: pointer;
}

/* Switch Toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

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

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: 0.3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
}

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

input:checked + .slider:before {
  transform: translateX(20px);
}

/* 13. Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 2000;
}

.toast {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 380px;
}

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

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

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

/* Guide Content */
.guide-content ol {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.guide-content strong {
  color: var(--text-primary);
}

.guide-content a {
  color: var(--accent-primary);
  text-decoration: none;
}

.guide-content a:hover {
  text-decoration: underline;
}

/* 14. Responsive Layout */
@media (max-width: 768px) {
  .navbar {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 10px;
  }
  
  .main-content {
    padding: 16px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .theme-label {
    display: none;
  }
}