:root {
    --background-color: #1a1a1a;
    --text-color: #e0e0e0;
    --link-color: #7abaff;
    --header-color: #ffffff;
  }
  
  body {
    background-color: var(--background-color);
    color: var(--text-color);
  }
  
  a {
    color: var(--link-color);
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: var(--header-color);
  }
  
  .site-header, .site-footer {
    background-color: #111;
    color: var(--text-color);
    border: none;
  }
  
  .site-nav a {
    color: var(--link-color);
  }

  /* Link Preview Cards */
  .link-preview {
    max-width: 640px;
    margin: 1.2em auto;
    border: 1px solid #333;
    border-radius: 8px;
    overflow: hidden;
    background-color: #222;
    transition: border-color 0.2s ease;
  }

  .link-preview:hover {
    border-color: #555;
  }

  .link-preview a {
    display: flex;
    text-decoration: none;
    color: inherit;
  }

  .link-preview-image {
    flex-shrink: 0;
    width: 160px;
    min-height: 100px;
    overflow: hidden;
    background-color: #1a1a1a;
  }

  .link-preview-image img {
    width: 100%;
    height: 100%;
    max-height: 120px;
    object-fit: cover;
    display: block;
  }

  .link-preview-content {
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    min-width: 0;
  }

  .link-preview-title {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .link-preview-description {
    font-size: 13px;
    color: #999;
    line-height: 1.4;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .link-preview-domain {
    font-size: 12px;
    color: #666;
  }

  @media (max-width: 500px) {
    .link-preview a {
      flex-direction: column;
    }
    .link-preview-image {
      width: 100%;
      height: 160px;
    }
  }