:root {
      --primary-color: #0f8b81;
      --accent-color: #EFCF56;
      --text-color: #333;
      --bg-color: #fdfdfd;
      --container-width: 800px;
      --heart-color: #e5398d;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
      background-color: var(--bg-color);
      color: var(--text-color);
      margin: 0;
      padding: 2em 1em;
      line-height: 1.6;
      font-size: 16px;
    }
    .container {
      max-width: var(--container-width);
      margin: 0 auto;
    }
    header {
      text-align: center;
      margin-bottom: 2em;
      padding: 1em;
      background-color: var(--primary-color);
      color: #fff;
      border-radius: 8px;
    }
    h1 {
      font-family: 'Pattaya', sans-serif;
      font-weight: normal;
      font-size: 3em;
    }
    header h1 {
      margin-bottom: 0;
      color: #fff;
      line-height: 1.2;
    }
    header h2 {
      font-size: 1.2em;
      font-weight: normal;
      color: rgba(255, 255, 255, 0.85);
    }
    .songbook-list {
      list-style: none;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 1.5em;
    }
    .songbook-item a {
      display: flex;
      flex-direction: column;
      height: 100%;
      text-decoration: none;
      color: var(--text-color);
      border-radius: 8px;
      overflow: hidden;
      background-color: #fff;
      border: 1px solid #eee;
      transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    }
    .songbook-item a:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    }
    .preview-container {
      position: relative;
    }
    .download-icon {
      position: absolute;
      bottom: 12px;
      right: 12px;
      background-color: rgba(15, 139, 129, 0.9);
      color: white;
      border-radius: 50%;
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: opacity 0.2s ease-in-out, transform 0.2s ease-in-out;
      transform: scale(0.9);
      opacity: 0;
    }
    .songbook-item a:hover .download-icon {
      opacity: 1;
      transform: scale(1);
    }
    .download-icon svg {
      width: 24px;
      height: 24px;
    }
    /* Show icon on touch devices */
    @media (hover: none) {
      .download-icon {
        opacity: 1;
        transform: scale(1);
      }
    }
    .songbook-item img {
      width: 100%;
      height: auto;
      display: block;
      aspect-ratio: 1 / 1.414; /* A4 paper ratio */
      object-fit: cover;
      background-color: #f0f0f0;
    }
    .songbook-item .song-details {
      padding: 0.8em 1em;
      min-height: 4.5em; /* Provide enough space for multi-line titles/subtitles */
    }
    .songbook-item .title {
      font-weight: bold;
      margin-bottom: 0.25em;
      text-align: center;
      font-size: 1.05em;
    }
    .songbook-item .subtitle {
      font-size: 0.9em;
      color: #666;
    }
    footer {
      margin-top: 2em;
      padding: 1.5em 1em;
      background-color: var(--primary-color);
      color: #fff;
      text-align: center;
      border-radius: 8px;
    }
    footer .logo {
      height: 60px;
    }
    footer .description,
    footer .disclaimer,
    footer .more-links {
      font-size: 0.9em;
      margin: 1.5em auto;
      padding: 0 1em;
      opacity: 0.9;
      line-height: 1.5;
    }
    footer .disclaimer a,
    footer .more-links a {
      color: #fff;
      text-decoration: underline;
      font-weight: bold;
    }
    footer .disclaimer a:hover,
    footer .more-links a:hover {
      text-decoration: none;
    }
    .support-cta {
      background-color: #1db1ad;
      background-image: linear-gradient(to bottom, #1db1ad, #199894);
      color: #fff;
      border-radius: 8px;
      padding: 28px 32px;
      margin: 2em auto 0;
      text-align: center;
    }
    .support-cta h1 {
      margin-top: 8px;
      margin-bottom: 0.5em;
    }
    .support-cta p {
      margin-bottom: 1.5em;
    }
    .micro-proof {
      font-size: 1.05em;
      margin-bottom: 1.75em !important;
    }
    .cta-button {
      display: inline-flex;
      align-items: center;
      gap: 0.5em;
      background-color: var(--accent-color);
      color: #254b48;
      padding: 12px 24px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: transform 150ms ease-in-out, box-shadow 150ms ease-in-out;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    .cta-button:hover {
      transform: scale(1.05);
      box-shadow: 0 6px 16px rgba(0,0,0,0.15);
    }
    .cta-button:hover .heart-icon {
      fill: var(--heart-color);
      stroke: var(--heart-color);
    }
    footer .more-links a {
      color: #fff;
      text-decoration: underline;
      transition: opacity 0.2s;
    }
    footer .more-links a:hover {
      opacity: 0.8;
    }
    .heart-icon {
      width: 1em;
      height: 1em;
      transition: fill 0.2s, stroke 0.2s;
    }
    footer .social-links {
      display: flex;
      justify-content: center;
      gap: 1.5em;
      margin-top: 1em;
    }
    footer .social-links a {
      color: #fff;
      transition: opacity 0.2s;
    }
    footer .social-links a:hover {
      opacity: 0.8;
    }
    footer .social-links svg {
      width: 28px;
      height: 28px;
    }
    footer .last-updated {
      margin: 1.5em auto 0;
      font-size: 0.8em;
      opacity: 0.8;
      max-width: 70ch;
      padding: 0 1em;
    }
    @media (max-width: 480px) {
      .support-cta {
        padding: 16px;
      }
    }