html, body {
      height: 100%;
      margin: 0;
      background: #000;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    .video-wrapper {
      position: relative;
      width: 100%;
      height: 100vh;
      overflow: hidden;
    }

    .bg-video {
      position: absolute;
      top: 50%;
      left: 50%;
      min-width: 100%;
      min-height: 100%;
      width: auto;
      height: auto;
      transform: translate(-50%, -50%);
      object-fit: cover;
      z-index: 0;
      filter: saturate(1.03) contrast(1.02);
    }

    .overlay-center {
      position: absolute;
      inset: 0;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: center;
      pointer-events: none;
      transform: translateY(-15%);
    }

    .social-group {
      display: flex;
      gap: 1.25rem;
      align-items: center;
      justify-content: center;
      pointer-events: auto;
      backdrop-filter: none;
      transform: translateY(0);
    }

    .social-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 84px;
      height: 84px;
      border-radius: 50%;
      background: rgba(255,255,255,0.06);
      box-shadow: 0 10px 30px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.02);
      transition: transform 220ms ease, background 220ms ease, box-shadow 220ms ease;
      text-decoration: none;
      color: #fff;
      font-size: 28px;
      border: 1px solid rgba(255,255,255,0.06);
      backdrop-filter: blur(4px);
    }

    .social-btn:focus {
      outline: none;
      box-shadow: 0 0 0 4px rgba(13,110,253,0.15);
      transform: translateY(-6px) scale(1.02);
    }

    .social-btn:hover,
    .social-btn:active {
      transform: translateY(-8px) scale(1.06);
      box-shadow: 0 18px 40px rgba(0,0,0,0.6);
    }

    .social-btn .fa-brands {
      transition: transform 220ms ease;
      pointer-events: none;
    }

    .social-btn.fb:hover,
    .social-btn.fb:focus { background: #1877f2; color: white; border-color: rgba(24,119,242,0.9); }
    .social-btn.ig:hover,
    .social-btn.ig:focus {
      background: linear-gradient(135deg, #f58529 0%, #dd2a7b 50%, #8134af 100%);
      color: white; border-color: rgba(255,255,255,0.08);
    }
    .social-btn.yt:hover,
    .social-btn.yt:focus { background: #ff0000; color: white; border-color: rgba(255,0,0,0.9); }
    .social-btn.sp:hover,
    .social-btn.sp:focus { background: #1DB954; color: white; border-color: rgba(29,185,84,0.9); }

    .social-label {
      display: block;
      font-size: 0.76rem;
      margin-top: 0.35rem;
      text-align: center;
      color: rgba(255,255,255,0.9);
      letter-spacing: 0.2px;
    }

    .video-gradient {
      position: absolute;
      inset: 0;
      z-index: 1;
      background: linear-gradient(180deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.25) 55%, rgba(0,0,0,0.45) 100%);
      pointer-events: none;
    }

    @media (max-width: 992px) {
      .social-btn { width: 74px; height: 74px; font-size: 24px; }
    }
    @media (max-width: 576px) {
      .social-group { gap: 0.9rem; }
      .social-btn { width: 62px; height: 62px; font-size: 20px; }
      .overlay-center { align-items: center; padding-bottom: 6vh; }
    }

    @media (pointer: coarse) {
      .social-btn { width: 72px; height: 72px; font-size: 22px; }
      @media (max-width:576px) {
        .social-btn { width: 64px; height: 64px; font-size: 20px; }
      }
    }

    @media (prefers-reduced-motion: reduce) {
      .social-btn, .social-btn .fa-brands { transition: none !important; transform: none !important; }
    }