:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --success-color: #2ecc71;
  --danger-color: #e74c3c;
  --warning-color: #f39c12;
  --info-color: #3498db;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
  color: #333;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Navigation */
.navbar {
  background-color: var(--dark-color);
  color: white;
  padding: 15px 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin-left: 20px;
}

.nav-link {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
}

.nav-link:hover {
  color: var(--primary-color);
}

/* Login Form */
.login-container {
  max-width: 400px;
  margin: 100px auto;
  padding: 20px;
  background-color: white;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.form-group {
  margin-bottom: 15px;
}

.form-control {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
}

.btn {
  display: inline-block;
  font-weight: 400;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 10px 15px;
  font-size: 16px;
  line-height: 1.5;
  border-radius: 4px;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  cursor: pointer;
}

.btn-primary {
  color: #fff;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #2980b9;
  border-color: #2980b9;
}

.btn-danger {
  color: #fff;
  background-color: var(--danger-color);
  border-color: var(--danger-color);
}

.btn-danger:hover {
  background-color: #c0392b;
  border-color: #c0392b;
}

/* Card Styling */
.card {
  background-color: white;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

.card-header {
  padding: 15px;
  background-color: var(--light-color);
  border-bottom: 1px solid #ddd;
  font-weight: bold;
}

.card-body {
  padding: 15px;
}

/* Table Styling */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th, .table td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.table thead th {
  background-color: var(--light-color);
  font-weight: bold;
}

.table tbody tr:hover {
  background-color: #f5f5f5;
}

/* Flash Messages */
.alert {
  padding: 15px;
  margin-bottom: 20px;
  border: 1px solid transparent;
  border-radius: 4px;
}

.alert-success {
  color: #155724;
  background-color: #d4edda;
  border-color: #c3e6cb;
}

.alert-danger {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.alert-warning {
  color: #856404;
  background-color: #fff3cd;
  border-color: #ffeeba;
}

.alert-info {
  color: #0c5460;
  background-color: #d1ecf1;
  border-color: #bee5eb;
}

/* Dashboard Widgets */
.widget-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.widget {
  background-color: white;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  padding: 15px;
  display: flex;
  flex-direction: column;
  height: 150px;
}

.widget-title {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.widget-value {
  font-size: 2rem;
  font-weight: bold;
  margin: auto 0;
}

.widget-subtitle {
  font-size: 0.85rem;
  margin-top: 5px;
  color: #7f8c8d;
}

.widget-subvalue {
  font-size: 0.9rem;
  color: var(--secondary-color);
  font-weight: normal;
}

.widget-trend {
  margin-top: auto;
  display: flex;
  align-items: center;
}

.widget-trend.up {
  color: var(--success-color);
}

.widget-trend.down {
  color: var(--danger-color);
}

/* Form Styling */
.form-container {
  max-width: 800px;
  margin: 0 auto;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 15px;
  align-items: flex-end;
}

.form-row .form-group {
  flex: 1;
  min-width: 200px;
  margin-right: 15px;
}

.form-row .form-group:last-child {
  margin-right: 0;
}

.form-row label {
  display: block;
  margin-bottom: 5px;
}

.form-actions {
  text-align: center;
  margin-top: 20px;
}

/* Badge Styling */
.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: bold;
}

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

.badge-success {
  background-color: var(--success-color);
  color: white;
}

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

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

.badge-info {
  background-color: var(--info-color);
  color: white;
}

.badge-secondary {
  background-color: var(--secondary-color);
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
  }
  
  .navbar-nav {
    margin-top: 15px;
  }
  
  .nav-item {
    margin-left: 0;
    margin-right: 20px;
  }
  
  .widget-container {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    flex-direction: column;
  }
  
  .form-row .form-group {
    width: 100%;
    margin-right: 0;
    margin-bottom: 15px;
  }
  
  .form-row label {
    width: 100%;
    text-align: left;
    margin-bottom: 5px;
  }
}