/* Contact Section */
  .contact-section {
    /*padding: 300px 0; */
    background: #ffffff;
    padding: 20px 0 80px 0;
  }
  .contact-container {
    display: flex;
    max-width: 1500px;
    margin: 0 auto;
    gap: 60px;
    padding: 0 30px;
  }

  /* Left Column: Contact Info */
  .contact-info {
    flex: 1;
    text-align: left;
    padding-right: 20px;
  }
  .contact-info h1 {
    font-size: 42px;
    color: #222;
    margin-bottom: 30px;
    font-weight: 700;
    letter-spacing: -0.5px;
  }
  .contact-info .intro-text {
    font-size: 16px;
    color: #555;
    margin-bottom: 40px;
    line-height: 1.7;
  }

  /* Contact Details */
  .contact-details {
    margin-bottom: 40px;
  }
  .contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    color: #333;
  }
  .contact-item i {
    margin-right: 15px;
    color: #222;
    width: 20px;
    font-size: 18px;
    margin-top: 3px;
  }
  .contact-item span {
    font-size: 16px;
    line-height: 1.5;
  }

  /* Social Media Links */
  .social-links {
    display: flex;
    gap: 20px;
    margin-top: 30px;
  }
  .social-links a {
    color: #222;
    font-size: 20px;
    text-decoration: none;
    transition: color 0.3s ease;
  }
  .social-links a:hover {
    color: #666;
  }

  /* Right Column: Contact Form */
  .contact-form {
    flex: 1;
  }
  .form-container {
    background: #222;
    padding: 40px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }
  .form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
  }
  .form-group {
    
  /* Rflex: 1; */
    
    margin-bottom: 25px;
  }
  .form-group input,
  .form-group textarea,
  .form-group select {
    width: 100%;
    padding: 15px;
    background: #333;
    border: none;
    border-radius: 4px;
    color: #fff;
    font-size: 15px;
    box-sizing: border-box;
    transition: background 0.3s ease;
  }
  .form-group input:focus,
  .form-group textarea:focus,
  .form-group select:focus {
    background: #444;
    outline: none;
  }
  .form-group input::placeholder,
  .form-group textarea::placeholder {
    color: #aaa;
  }
  .form-group textarea {
    height: 120px;
    resize: none;
  }

  /* Dropdown styling */
  .dropdown {
    position: relative;
  }
  .select-wrapper {
    position: relative;
  }
  .dropdown-arrow {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #aaa;
    pointer-events: none;
  }
  select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
  }

  /* Attachments section */
  .attachments-section {
    margin-top: 25px;
    margin-bottom: 30px;
  }
  .attachments-section h3 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 15px;
    font-weight: 600;
  }
  .file-upload {
    position: relative;
  }
  .file-upload input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
  }
  .file-label {
    display: block;
    padding: 15px;
    background: #333;
    color: #aaa;
    text-align: left;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.3s ease;
  }
  .file-label:hover {
    background: #444;
  }
  .attachments-section small {
    display: block;
    color: #aaa;
    margin-top: 8px;
    font-size: 12px;
  }

  /* Submit Button */
  .form-container button {
    width: 100%;
    padding: 16px;
    background: #e6e619;
    color: #222;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    margin-top: 15px;
    transition: background 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  .form-container button:hover {
    background: #d1d118;
  }

  /* Success Message */
  .success-message {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: #222;
    color: white;
    border-radius: 4px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }
  .success-message p {
    font-size: 16px;
    margin: 0;
  }

  /* Responsive Design */
  @media (max-width: 900px) {
    .contact-container {
      flex-direction: column;
    }
    .contact-info,
    .contact-form {
      flex: 1;
      padding-right: 0;
    }
    .form-row {
      flex-direction: column;
      gap: 0;
    }
    .contact-section {
      padding: 60px 0;
    }
  }
  /* 表单验证样式 */
  .form-group {
    position: relative;
  }
  
  .error-message {
    color: #ff6b6b;
    font-size: 12px;
    margin-top: 5px;
    display: none;
    position: absolute;
    bottom: -20px;
    left: 0;
  }
  
  .form-group.error input,
  .form-group.error textarea,
  .form-group.error select {
    border: 1px solid #ff6b6b;
  }
  
  .form-group.error .error-message {
    display: block;
  }
  
  /* 提交按钮禁用状态 */
  .form-container button:disabled {
    background: #999;
    cursor: not-allowed;
  }
  
  /* 表单提交成功消息 */
  .success-message {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: #222;
    color: white;
    border-radius: 4px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }
  .success-message p {
    font-size: 16px;
    margin: 0;
  }
  
  /* 表单提交中状态 */
  .submitting {
    position: relative;
    pointer-events: none;
  }
  
  .submitting:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 4px;
  }
  
  .spinner {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top: 4px solid #fff;
    animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
  }