body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(ellipse at bottom, #0d1a2d 0%, #000 100%);
      background-size: 400% 400%;
      animation: backgroundShift 15s ease infinite;
      z-index: -1;
    }

    @keyframes backgroundShift {
      0% {
        background-position: 0% 50%;
      }
      50% {
        background-position: 100% 50%;
      }
      100% {
        background-position: 0% 50%;
      }
    }

    .glass {
      backdrop-filter: blur(12px);
      background-color: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
    }

    html {
      scroll-behavior: smooth;
    }

    h2, h3 {
      scroll-margin-top: 120px;
    }
    
    .scroll-to-top {
      display: none;
      position: fixed;
      bottom: 6%;
      right: 6%;
      background-color: #f59e0b;
      color: black;
      font-weight: bold;
      padding: 12px 24px;
      border-radius: 12px;
      box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.3);
      cursor: pointer;
      transition: opacity 0.3s ease;
    }
    .scroll-to-top.show {
      display: block;
    }