:root {
    --primary-color: #36B1B3; /* Couleur principale Imagilire */
    --background-color: #FEFCF9;
    --text-color: #333333;
    --card-background: #F9F9F9;
    --card-shadow: rgba(0, 0, 0, 0.1);
    --border-radius: 0.5rem;
    --transition-speed: 0.3s;
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html, body {
    height: 100%;
    font-family: Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
  }
  a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-speed);
  }
  a:hover, a:focus {
    color: darken(var(--primary-color), 10%);
    outline: none;
  }
  header {
    text-align: center;
    padding: 2rem 1rem;
  }
  header img {
    max-width: 200px;
    height: auto;
  }
  header h1 {
    margin-top: 1rem;
    font-size: 2rem;
  }
  header .tagline {
    margin-top: 0.5rem;
    font-size: 1.2rem;
    color: var(--primary-color);
  }
  main {
    padding: 2rem 1rem;
    max-width: 1000px;
    margin: 0 auto;
  }
  .app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
  }
  .app-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--card-shadow);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform var(--transition-speed);
  }
  .app-card:hover, .app-card:focus-within {
    transform: translateY(-5px);
  }
  .app-card img {
    width: 80px;
    height: auto;
    margin-bottom: 1rem;
  }
  .app-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }
  .app-card p {
    flex-grow: 1;
    margin-bottom: 1rem;
  }
  .btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
  }
  .btn:hover, .btn:focus {
    background-color: darken(var(--primary-color), 10%);
    outline: none;
  }
  footer {
    text-align: center;
    color: #FEFCF9;
    padding: 1.5rem;
    font-size: 0.9rem;
    background-color: #36B1B3;
  }
  footer a {
    color: #FEFCF9;
  }
  footer a:hover, footer a:focus {
    color: #FEFCF9;
    text-decoration: underline;
  }
  @media (prefers-reduced-motion: reduce) {
    * {
      transition: none !important;
    }
  }