body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #f0f0f0, #d9d9d9);
  }
  
  .container {
    text-align: center;
    padding: 20px;
  }
  
  .error-code {
    font-size: 6rem;
    font-weight: 700;
    color: #ff4a4a;
    margin: 0;
    line-height: 1;
  }
  
  .error-title {
    margin-top: 0.5rem;
    font-size: 2.5rem;
    font-weight: 600;
    color: #333;
    line-height: 1.2;
  }
  
  .error-description {
    margin-top: 1rem;
    font-size: 1rem;
    color: #666;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .button-group {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
  }

  .button-group a {
    text-decoration: none;
  }
  
  .go-back-btn,
  .contact-btn {
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.3s, box-shadow 0.3s;
  }
  
  .go-back-btn {
    display: inline-flex;
    align-items: center;
    color: #333;
    background-color: transparent;
  }
  
  .go-back-btn:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  }
  
  .go-back-btn:focus,
  .go-back-btn:active {
    outline: none;
    border: none;
  }
  
  .go-back-btn .icon {
    margin-right: 8px;
    transform: rotate(180deg);
  }
  
  .contact-btn {
    background-color: #000;
    color: white;
    border-radius: 8px;
  }
  
  .contact-btn:hover {
    background-color: #333;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  }
  
  .contact-btn:focus,
  .contact-btn:active {
    outline: none;
    border: none;
  }
  