:root {
  --primary-color: #0d6efd;
  --secondary-color: #6c757d;
  --success-color: #198754;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #0dcaf0;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --body-bg: #ffffff;
  --text-color: #212529;
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
  background-color: var(--body-bg);
  color: var(--text-color);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--primary-color);
}

.navbar {
  background-color: var(--body-bg) !important;
  border-bottom: 1px solid #dee2e6;
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.navbar-brand {
  font-weight: 600;
  color: var(--text-color) !important;
}

.nav-link {
  color: var(--text-color) !important;
  transition: color 0.15s ease-in-out;
}

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

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

.btn-primary:hover {
  background-color: #0b5ed7;
  border-color: #0a58ca;
}

.btn-outline-secondary {
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

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

.btn-outline-success {
  color: var(--success-color);
  border-color: var(--success-color);
}

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

.card {
  border: 1px solid #dee2e6;
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  transition: box-shadow 0.15s ease-in-out;
}

.card:hover {
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.footer {
  background-color: var(--light-color);
  border-top: 1px solid #dee2e6;
}

.dropdown-menu {
  border: 1px solid #dee2e6;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

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