:root {
  --primary-dark: #1a1a1a;
  --secondary-dark: #2a2a2a;
  --tertiary-dark: #3a3a3a;
  --accent-blue: #4a9eff;
  --accent-blue-hover: #357abd;
  --accent-green: #00d4aa;
  --accent-orange: #ff6b35;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #888888;
  --border-color: #404040;
  --danger-color: #ef4444;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 0;
  margin: 0;
}

.navbar {
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.page-header {
  text-align: center;
  margin-bottom: 3rem;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 400;
}

.section-card {
  background: rgba(42, 42, 42, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.section-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  border-color: var(--accent-blue);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.required-indicator {
  color: var(--accent-orange);
  font-size: 0.8rem;
}

.form-control, .form-select {
  background: rgba(58, 58, 58, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
}

.form-control:focus, .form-select:focus {
  background: rgba(58, 58, 58, 0.8);
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
  color: var(--text-primary);
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-hover));
  border: none;
  border-radius: 8px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(74, 158, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(74, 158, 255, 0.4);
  background: linear-gradient(135deg, var(--accent-blue-hover), var(--accent-blue));
}

.btn-info {
  background: linear-gradient(135deg, var(--accent-green), #00b894);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  color: white;
}

.btn-info:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-orange), #e55a2b);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  color: white;
}

.btn-success:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
  color: white;
}

.btn-warning {
  background: linear-gradient(135deg, var(--accent-orange), #e55a2b);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  color: white;
}

.btn-warning:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
  color: white;
}

.table-dark {
  --bs-table-bg: rgba(42, 42, 42, 0.6);
  --bs-table-border-color: var(--border-color);
}

.table-dark th {
  background: rgba(58, 58, 58, 0.8);
  color: var(--text-primary);
  font-weight: 600;
  border-bottom: 2px solid var(--accent-blue);
  padding: 1rem;
}

.table-dark td {
  color: var(--text-secondary);
  padding: 1rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--border-color);
}

.table-dark tbody tr {
  transition: all 0.3s ease;
}

.table-dark tbody tr:hover {
  background: rgba(58, 58, 58, 0.4);
  transform: scale(1.005);
}

.alert-danger {
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.3);
  color: #ff6b35;
  border-radius: 8px;
  backdrop-filter: blur(5px);
}

.tooltip {
  --bs-tooltip-bg: var(--secondary-dark);
  --bs-tooltip-color: var(--text-primary);
}

.row {
  margin-left: -0.75rem;
  margin-right: -0.75rem;
}

.col-md-6 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.action-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.action-buttons .btn {
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color), #dc2626);
  border: none;
  color: white;
}

.btn-danger:hover {
  background: linear-gradient(135deg, #dc2626, var(--danger-color));
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
  color: white;
}

.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .main-container {
    padding: 0 1rem;
  }
  
  .section-card {
    padding: 1.5rem;
  }
  
  .page-title {
    font-size: 2rem;
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .btn-info, .btn-success {
    width: 100%;
    margin-bottom: 0.25rem;
  }
}