*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: #f8fafc;
  min-height: 100vh;
  margin: 0;
  color: #1a202c;
}

main {
  min-height: 100vh;
}

.text-danger {
  color: #c62828;
}

.small {
  font-size: 0.875rem;
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.alert-success {
  background-color: #d1edff;
  color: #0066cc;
  border-left: 4px solid #0066cc;
}

.alert-danger {
  background-color: #ffebee;
  color: #c62828;
  border-left: 4px solid #c62828;
}

.alert-info {
  background-color: #e3f2fd;
  color: #1565c0;
  border-left: 4px solid #1565c0;
}

.alert-warning {
  background-color: #fff8e1;
  color: #f57f17;
  border-left: 4px solid #f57f17;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: #3b82f6;
  color: #fff;
}

.btn-secondary {
  background: #6b7280;
  color: #fff;
}

.btn-outline-primary {
  background: transparent;
  color: #3b82f6;
  border: 2px solid #3b82f6;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

.col-md-4 {
  flex: 1 1 200px;
}

.card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  height: 100%;
}

.card-body {
  padding: 24px;
  text-align: center;
}

.card-title {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.card-text {
  margin: 0;
  color: #4a5568;
  font-size: 0.95rem;
}

.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-5 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.me-2 { margin-right: 8px; }