* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e0e0e0;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 40px 32px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.subtitle {
  color: #888;
  font-size: 0.9rem;
}

.auth-form h2 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  text-align: center;
}

.auth-form p {
  color: #888;
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 16px;
}

.setup-info {
  color: #4fc3f7 !important;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: #aaa;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: #fff;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: #4fc3f7;
  box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.15);
}

.form-group input::placeholder {
  color: #555;
}

.btn-primary {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #4fc3f7, #0288d1);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  margin-top: 8px;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error-message {
  background: rgba(244, 67, 54, 0.15);
  border: 1px solid rgba(244, 67, 54, 0.3);
  color: #ef5350;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-top: 16px;
  text-align: center;
}

.success-message {
  background: rgba(76, 175, 80, 0.15);
  border: 1px solid rgba(76, 175, 80, 0.3);
  color: #66bb6a;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-top: 16px;
  text-align: center;
}

.login-footer {
  margin-top: 24px;
  text-align: center;
}

.login-footer p {
  color: #555;
  font-size: 0.75rem;
}

.mfa-backup-link {
  margin-top: 12px;
}

.mfa-backup-link a {
  color: #4fc3f7;
  text-decoration: none;
  font-size: 0.8rem;
}

.mfa-backup-link a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .login-card {
    padding: 28px 20px;
  }
}