:root {
    --accent-color: #00ff90; /* Default: green */
    --text-color: #e0e0e0;
    --background-color: #0e0e0e;
  }
  
  /* Red theme */
  body.theme-green {
    --accent-color: #00ff90;
  }
  
  body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  
  .container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
    text-align: center;
  }
  
  header {
    margin-bottom: 30px;
  }
  
  .app-icon {
    width: 180px;
    height: 180px;
    border-radius: 20%;
    margin-bottom: 16px;
  }
  
  .tagline {
    font-size: 1.1rem;
    color: #aaa;
    margin-top: 0.25rem;
    font-weight: bold;
  }

  .screenshots {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
  }
  
  .screenshot-group {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: nowrap;
    gap: 16px;
    max-width: 100%;
    /* overflow-x: auto; */
    padding-bottom: 20px;
  }

  .screenshot-group img {
    flex: 0 0 auto;
    width: 18%; /* consistent sizing across reloads */
    min-width: 200px;
    max-width: 240px;
    border-radius: 12px;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s ease;
  }
  
  @media screen and (max-width: 800px) {
    .screenshot-group {
      flex-direction: column;
      align-items: center;
    }
  
    .screenshot-group img {
      max-width: 80%;
    }
  }
  
  .features {
    margin-top: 40px;
    text-align: center;
  }
  
  .features h2 {
    text-align: center;
    color: var(--accent-color);
  }
  
  .features ul {
    list-style: none;
    padding-left: 0;
    display: inline-block;
    text-align: left;
    margin-top: 20px;
  }
  
  .features li {
    padding-left: 28px;
    margin-bottom: 12px;
    position: relative;
    font-size: 15px;
  }
  
  .features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
  }
  
  .store-button {
    margin-top: 40px;
  }
  
  .store-button img {
    width: 180px;
    border-radius: 18px;
    border: 2px solid var(--accent-color);
    padding: 6px;
  }
  
  footer {
    margin-top: 60px;
    font-size: 0.85rem;
    color: #666;
  }

  footer a {
    color: var(--accent-color);
    text-decoration: none;
  }
  
  footer a:hover {
    text-decoration: underline;
  }