@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap');

    :root {
      --primary: #007bff; /* A vibrant tech blue */
      --secondary-accent: #adb5bd; /* Light grey for subtle highlights */
      --dark: #212529; /* Deeper, richer dark grey */
      --light: #f8f9fa; /* Soft off-white */
      --text-color: #ced4da; /* Slightly darker off-white for body text */
      --youtube: rgba(255, 0, 0, 0.8);
      --spacing: 1rem;
      --radius: 0.75rem;
      --backdrop-blur: 10px;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      color: var(--text-color); /* Use new text color */
      font-family: 'Roboto', "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; /* Add Roboto */
      background-color: var(--dark);
      min-height: 100vh;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
    }
    header, main, footer { position: relative; z-index: 1; }
    header {
      padding: var(--spacing);
      text-align: center;
      background: rgba(0,0,0,0.7); /* Slightly more opaque */
      backdrop-filter: blur(var(--backdrop-blur));
    }
    header h1 {
      font-size: 3rem;
      letter-spacing: 1px;
      text-shadow: 2px 2px 8px rgba(0,123,255,0.5); /* New primary color with transparency */
    }
    /* Fond animé Vanta.js */
    #vanta-bg {
      position: fixed;
      top: 0; left: 0;
      width: 100vw; height: 100vh;
      z-index: 0;
    }
    main.content {
      flex: 1;
      display: flex; flex-direction: column;
      align-items: center;
      padding: var(--spacing);
      gap: calc(var(--spacing) * 2);

    }
    /* Section Présentation */
    #presentation {
      max-width: 800px;
      text-align: center;
      background: rgba(0,0,0,0.6); /* Slightly darker transparent background */
      backdrop-filter: blur(var(--backdrop-blur));
      padding: calc(var(--spacing) * 1.5);
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,0.1);
    }
    #presentation h2 {
      font-size: 2rem;
      margin-bottom: var(--spacing);
      color: var(--primary);
    }
    #presentation p {
      color: var(--text-color);
      font-size: 1rem;
      line-height: 1.5;
    }
    nav.button-container {
      display: flex; flex-wrap: wrap;
      gap: var(--spacing);
      justify-content: center;
    }
    .service {
      background-color: rgba(33, 37, 41, 0.8); /* Use a transparent dark background */
      color: var(--light);
      padding: var(--spacing);
      width: 160px;
      min-height: 140px;
      border-radius: var(--radius);
      text-decoration: none;
      display: flex; flex-direction: column;
      align-items: center;
      justify-content: center;
      backdrop-filter: blur(var(--backdrop-blur));
      border: 1px solid rgba(255,255,255,0.1);
      box-shadow: 0 8px 20px rgba(0,0,0,0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
      font-weight: 600;
    }
    .service:focus {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    .service:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 30px rgba(0,0,0,0.5);
      background-color: var(--primary); /* Hover effect */
    }
    .service.guacamole { /* Removed specific background-color */ }
    .service.guacamole:hover { background-color: var(--primary); }
    .service.nextcloud { /* Removed specific background-color */ }
    .service.nextcloud:hover { background-color: var(--primary); }
    .service.status {
      /* Revert to default service styling, remove transparent background and padding */
      background-color: rgba(33, 37, 41, 0.8); /* Inherit default service background */
      padding: var(--spacing); /* Inherit default service padding */
    }
    .service.status img {
      width: 60px; /* Smaller icon size */
      height: 60px;
      margin-bottom: 0.75rem; /* Consistent margin with other service images */
    }
    .service.linkedin img { fill: var(--primary); }
    .service.linkedin:hover { background-color: #0A66C2; }
    .service img {
      width: 100px; height: 100px;
      object-fit: contain;
      margin-bottom: 0.75rem;
      pointer-events: none;
    }
    /* Logo YouTube plus petit pour ne pas dénoter */
    .yt-label img {
      width: 24px;
      height: 24px;
    }
    .yt-label {
      display: flex; align-items: center;
      gap: 0.5rem;
      font-size: 0.95rem;
    }
    .description {
      max-width: 700px;
      text-align: center;
      background: rgba(0,0,0,0.6); /* Slightly darker transparent background */
      padding: calc(var(--spacing) * 1);
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,0.1);
      color: var(--text-color); /* Use new text color */
      font-size: 1rem;
      line-height: 1.4;
      backdrop-filter: blur(var(--backdrop-blur));
    }
    .description strong { color: var(--light); }
    footer {
      text-align: center;
      padding: var(--spacing);
      font-size: 0.9rem;
      background: rgba(0,0,0,0.7); /* Slightly more opaque */
      backdrop-filter: blur(var(--backdrop-blur));
      width: 100%;
      margin-top: auto; /* Push footer to the bottom */
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      header h1 {
        font-size: 2.5rem;
      }
      #presentation h2 {
        font-size: 1.75rem;
      }
      #presentation p,
      .description p {
        font-size: 0.9rem;
      }
      .service {
        width: 140px;
        min-height: 120px;
        padding: calc(var(--spacing) * 0.75);
      }
      .service img {
        width: 80px; height: 80px;
      }
    }

    @media (max-width: 480px) {
      header h1 {
        font-size: 2rem;
      }
      #presentation h2 {
        font-size: 1.5rem;
      }
      .service {
        width: 100%; /* Full width on very small screens */
        max-width: 200px;
      }
    }

    /* Contact Form Styles */
    #contact-form-section {
      max-width: 600px;
      width: 100%;
      background: rgba(0,0,0,0.6);
      backdrop-filter: blur(var(--backdrop-blur));
      padding: calc(var(--spacing) * 2);
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,0.1);
      box-shadow: 0 8px 20px rgba(0,0,0,0.3);
      text-align: left;
    }

    #contact-form-section h2 {
      text-align: center;
      font-size: 2rem;
      margin-bottom: calc(var(--spacing) * 1.5);
      color: var(--primary);
    }

    .form-group {
      margin-bottom: var(--spacing);
    }

    .form-group label {
      display: block;
      margin-bottom: calc(var(--spacing) * 0.5);
      color: var(--light);
      font-weight: 400;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group textarea {
      width: 100%;
      padding: calc(var(--spacing) * 0.75);
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,0.2);
      background-color: rgba(0,0,0,0.4);
      color: var(--light);
      font-size: 1rem;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .form-group input[type="text"]:focus,
    .form-group input[type="email"]:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0,123,255,0.3);
      outline: none;
    }

    .form-group textarea {
      resize: vertical;
      min-height: 120px;
    }

    .submit-button {
      display: block;
      width: 100%;
      padding: var(--spacing);
      border-radius: var(--radius);
      border: none;
      background-color: var(--primary);
      color: var(--light);
      font-size: 1.1rem;
      font-weight: 700;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.3s ease;
      margin-top: calc(var(--spacing) * 1.5);
    }

    .submit-button:hover {
      background-color: #0056b3;
      transform: translateY(-2px);
    }

    /* Responsive adjustments for contact form */
    @media (max-width: 600px) {
      #contact-form-section {
        padding: var(--spacing);
      }
      #contact-form-section h2 {
        font-size: 1.75rem;
      }
      .form-group input[type="text"],
      .form-group input[type="email"],
      .form-group textarea,
      .submit-button {
        font-size: 0.95rem;
        padding: calc(var(--spacing) * 0.6);
      }
    }