/* Authentication Pages Styles */

.auth-container {
  min-height: 100vh;
  padding: 100px 20px 40px;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  align-items: start;
}

.auth-card {
  background: white;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  padding: 40px;
  max-width: 500px;
  width: 100%;
  justify-self: end;
}

.auth-header {
  text-align: center;
  margin-bottom: 40px;
}

.auth-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.auth-description {
  color: var(--text-secondary);
  font-size: 1rem;
}

.auth-form {
  margin-bottom: 30px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

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

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 14px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.2s ease;
  background-color: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  background-color: white;
  cursor: pointer;
}

.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  margin-right: 8px;
  position: relative;
  transition: all 0.2s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
  content: '✓';
  position: absolute;
  color: white;
  font-size: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.forgot-link {
  color: var(--primary-color);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.forgot-link:hover {
  text-decoration: underline;
}

.terms-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.terms-link:hover {
  text-decoration: underline;
}

.auth-divider {
  text-align: center;
  margin: 30px 0;
  position: relative;
  color: var(--text-muted);
  font-size: 14px;
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--border-color);
  z-index: 1;
}

.auth-divider span {
  background: white;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

.social-login {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
}

.btn-social {
  flex: 1;
  background: white;
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 8px;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-social:hover {
  border-color: var(--text-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-wechat:hover {
  border-color: #07c160;
  color: #07c160;
}

.btn-qq:hover {
  border-color: #1296db;
  color: #1296db;
}

.btn-google:hover {
  border-color: #db4437;
  color: #db4437;
}

.social-icon {
  font-size: 16px;
}

.auth-footer {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

.auth-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.auth-link:hover {
  text-decoration: underline;
}

/* Auth Benefits */
.auth-benefits {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 100%;
  justify-self: start;
}

.auth-benefits h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 30px;
  color: var(--text-primary);
}

.benefit-list {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.benefit-item {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.benefit-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-color);
  border-radius: 8px;
}

.benefit-text h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--text-primary);
}

.benefit-text p {
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 14px;
}

/* Password Strength Indicator */
.password-strength {
  margin-top: 8px;
  margin-bottom: 10px;
}

.strength-bar {
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 5px;
}

.strength-fill {
  height: 100%;
  transition: width 0.3s ease, background-color 0.3s ease;
  border-radius: 2px;
}

.strength-weak .strength-fill {
  width: 33%;
  background-color: var(--danger-color);
}

.strength-medium .strength-fill {
  width: 66%;
  background-color: var(--warning-color);
}

.strength-strong .strength-fill {
  width: 100%;
  background-color: var(--accent-color);
}

.strength-text {
  font-size: 12px;
  color: var(--text-muted);
}

/* Error states */
.form-input.error {
  border-color: var(--danger-color);
}

.form-input.error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
  color: var(--danger-color);
  font-size: 12px;
  margin-top: 5px;
  display: none;
}

.form-input.error + .error-message {
  display: block;
}

/* Success states */
.form-input.success {
  border-color: var(--accent-color);
}

.form-input.success:focus {
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Loading state for submit button */
.btn[disabled] {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .auth-container {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 80px 15px 40px;
  }

  .auth-card,
  .auth-benefits {
    justify-self: center;
    max-width: 100%;
  }

  .auth-card {
    padding: 30px 20px;
  }

  .auth-benefits {
    padding: 30px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .social-login {
    flex-direction: column;
    gap: 10px;
  }

  .auth-title {
    font-size: 1.5rem;
  }

  .benefit-item {
    gap: 12px;
  }

  .benefit-icon {
    width: 35px;
    height: 35px;
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 25px 15px;
  }

  .auth-benefits {
    padding: 25px 15px;
  }

  .form-input,
  .form-select {
    padding: 12px 14px;
  }

  .btn-lg {
    padding: 14px 20px;
    font-size: 15px;
  }
}