/* --- GLOBAL --- */
    html, body {
      margin: 0;
      padding: 0;
      overflow-y: auto;
      overflow-x: hidden;
      font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Inter, sans-serif;
      color: #e6edf3;
      background: #0b0f14;
    }

    /* --- STATIC BACKGROUND --- */
    .bg {
      position: fixed;
      inset: 0;
      z-index: 0;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(6,10,15,0.65), rgba(6,10,15,0.75)),
        url('bg-www.jpeg');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      background-attachment: fixed;
    }

    /* --- TOP CARD --- */
    .wrap {
      position: relative;
      z-index: 10;
      padding: 48px 0;
      display: flex;
      justify-content: center;
    }

    .card {
      max-width: 720px;
      width: 100%;
      background: rgba(15,21,32,0.7);
      backdrop-filter: blur(6px);
      border: 1px solid #1b2330;
      border-radius: 10px;
      padding: 32px;
    }

    h1 { margin: 0 0 12px; font-size: 24px; }
    p  { margin: 8px 0 0; line-height: 1.6; color: #c2c8d0; }
    a  { color: #cacaca; text-decoration: none; font-size: 12px;}
    a:hover { text-decoration: underline; }

    /* --- VIDEO GRID: 2 centered columns --- */
    .videos-grid {
      position: relative;
      z-index: 20;
      display: none; /* hidden before ART click */
      grid-template-columns: repeat(2, minmax(320px, 1fr));
      justify-content: center;
      gap: 12px;
      padding: 32px 0;
      max-width: 900px;
      margin: 0 auto;
    }

    .videos-grid.active {
      display: grid;
    }

    @media (max-width: 768px) {
      .videos-grid {
        grid-template-columns: 1fr;
      }
    }

    .video-tile iframe {
      width: 100%;
      height: 180px;
      border-radius: 12px;
      border: none;
      position: relative;
      z-index: 25;
    }

    /* --- PRELOADER (SPINNER) --- */
    .loader {
      border: 4px solid rgba(255,255,255,0.25);
      border-top: 4px solid #76b9ff;
      border-radius: 50%;
      width: 48px;
      height: 48px;
      animation: spin 0.8s linear infinite;
      margin: 40px auto;
      display: block;
      position: relative;
      z-index: 25;
    }

    .hidden {
      display: none;
    }

    @keyframes spin {
      to { transform: rotate(360deg); }
    }