body {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
  padding: 40px 32px;
}

.form-floating > .form-control:focus ~ label {
  color: #2563eb;
}

.form-control:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

.btn-primary {
  background-color: #2563eb;
  border-color: #2563eb;
  font-weight: 600;
  padding: 12px;
  border-radius: 8px;
}

.btn-primary:hover {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
}

.brand-icon {
  width: 52px;
  height: 52px;
  background-color: #eff6ff;
  color: #2563eb;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
}