.admin-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 280px;
  background: var(--primary);
  border-right: 1px solid var(--primary-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.sidebar-header {
  padding: 24px;
  border-bottom: 1px solid var(--primary-light);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: white;
}

.sidebar-brand i {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

.sidebar-brand h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

.sidebar-nav {
  flex: 1;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  color: white;
  background: var(--primary-light);
}

.nav-item.active {
  color: white;
  background: var(--accent);
}

.nav-item i {
  width: 20px;
  height: 20px;
}

.sidebar-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--primary-light);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.main-content {
  flex: 1;
  margin-left: 280px;
  background: var(--bg-primary);
  min-height: 100vh;
}

.top-bar {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.top-bar h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--success-bg);
  border-radius: var(--radius);
  color: #166534;
  font-size: 0.875rem;
  font-weight: 500;
}

.content-area {
  padding: 32px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Dashboard Stats */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.dashboard-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  align-items: center;
  gap: 20px;
}

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

.dashboard-card.danger {
  border-left: 4px solid var(--danger);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.dashboard-card.success .card-icon {
  background: var(--success-bg);
  color: var(--success);
}

.dashboard-card.danger .card-icon {
  background: var(--danger-bg);
  color: var(--danger);
}

.dashboard-card.primary .card-icon {
  background: #dbeafe;
  color: var(--accent);
}

.card-icon i {
  width: 24px;
  height: 24px;
}

.card-info h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.2;
}

.card-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Alert Form */
.alert-form {
  max-width: 800px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.form-section {
  margin-bottom: 32px;
}

.form-section h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-section h4 i {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.station-selector {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.station-checkbox {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
}

.station-checkbox:hover {
  border-color: var(--accent);
  background: white;
}

.station-checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
}

.station-checkbox-info {
  flex: 1;
}

.station-checkbox-info strong {
  display: block;
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.station-checkbox-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.station-checkbox:has(input:disabled) {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.video-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.2s ease;
}

.video-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.video-item img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.video-item .timestamp {
  padding: 12px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
  border-top: 1px solid var(--border);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

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

.modal {
  background: white;
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  border: none;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

.modal-close i {
  width: 18px;
  height: 18px;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Image Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  cursor: zoom-out;
}

.lightbox-overlay.active {
  display: flex;
}

.lightbox-overlay img {
  max-width: 95vw;
  max-height: 95vh;
  object-fit: contain;
  border-radius: var(--radius);
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-close i {
  width: 24px;
  height: 24px;
}

/* Sections */
.section {
  display: none;
}

.section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: 100;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .content-area {
    padding: 20px;
  }
  
  .page-header {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
}