.loginContainer {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.loginHeader {
  text-align: center;
  margin-bottom: 2rem;
}

.logo {
  width: 80%;
  height: auto;
  margin-bottom: 1.5rem;
  border-radius: 12px;
}

.loginHeader h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0;
  color: #1e3a8a; /* Tailwind blue-900 藏青色 */
}

.loginHeader p {
  margin: 0.5rem 0 0;
  color: #475569; /* slate-600 */
  font-size: 0.95rem;
}

.loginCard {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 24px -8px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.formGroup {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.input {
  width: 90%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: inherit;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.input::placeholder {
  color: #64748b; /* slate-500 */
}

.input:focus {
  outline: none;
  border-color: #1e3a8a; /* blue-900 */
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.15);
}

.submitButton {
  width: 100%;
  padding: 0.75rem;
  background: linear-gradient(135deg, #1e40af, #1e3a8a); /* blue-800 to blue-900 */
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.submitButton:hover {
  background: linear-gradient(135deg, #1e3a8a, #172554); /* blue-900 to blue-950 */
  transform: translateY(-1px);
}

.submitButton:active {
  transform: translateY(0);
}

.error {
  color: #ef4444;
  font-size: 0.875rem;
  text-align: center;
  margin-bottom: 0.5rem;
  padding: 0.5rem;
  background: rgba(239, 68, 68, 0.1);
  border-radius: 6px;
}

