.error-page {
    min-height: 100vh;
    padding-top: -40px;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
  }
  
  .error-page h1 {
    font-size: 4rem;
    margin-bottom: 10px;
    color: var(--item-cl-hover);
  }
  
  .error-page p {
    font-size: 1.4rem;
    margin-bottom: 30px;
    color: var(--item-cl);
    max-width: 600px;
  }
  
  .back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background-color: var(--submenu-bg);
    color: var(--text-color);
    border: 1px solid var(--btn-border);
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.3s ease;
  }
  
  .back-btn:hover {
    background-color: var(--submenu-bg-hover);
  }
  
  .back-icon {
    width: 20px;
    height: 20px;
  }