*,
  *::before,
  *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
  }

  @keyframes fallDiagLeft {
      0% {
          transform: translate(0px, -150px);
          opacity: 0;
      }

      10% {
          opacity: 0.65;
      }

      90% {
          opacity: 0.65;
      }

      100% {
          transform: translate(-600px, 120vh);
          opacity: 0;
      }
  }

  @keyframes pulse {

      0%,
      100% {
          transform: scale(1);
      }

      50% {
          transform: scale(1.04);
      }
  }

  @keyframes fadeIn {
      from {
          opacity: 0;
          transform: translateY(24px);
      }

      to {
          opacity: 1;
          transform: translateY(0);
      }
  }

  body {
      font-family: 'DM Sans', sans-serif;
      background: #000;
      overflow: hidden;
  }

  #overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: #000;
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 9999;
      cursor: pointer;
      opacity: 1;
      transition: opacity 0.5s ease;
  }

  #overlay-text {
      color: white;
      font-size: 28px;
      font-family: 'Syne', sans-serif;
      animation: pulse 2s infinite;
  }

  @keyframes pulse {
      0% {
          transform: scale(1);
      }

      50% {
          transform: scale(1.15);
      }

      100% {
          transform: scale(1);
      }
  }

  #musicToggle {
      position: fixed;
      top: 15px;
      right: 15px;
      z-index: 10000;

      width: 44px;
      height: 44px;

      background: rgba(0, 0, 0, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 10px;

      display: none;
      align-items: center;
      justify-content: center;

      cursor: pointer;

      opacity: 0;
      transition: opacity 0.25s ease;
  }

  #musicToggle svg {
      width: 16px;
      height: 16px;
  }

  body.music-ready #musicToggle.visible {
      opacity: 1;
  }

  #musicToggle::after {
      content: attr(data-tooltip);
      position: absolute;
      right: 52px;
      top: 50%;
      transform: translateY(-50%);

      background: rgba(0, 0, 0, 0.85);
      color: white;

      padding: 6px 10px;
      border-radius: 6px;

      font-size: 12px;
      white-space: nowrap;

      opacity: 0;
      visibility: hidden;
      transition: 0.2s;

      pointer-events: none;
  }

  #musicToggle:hover::after {
      opacity: 1;
      visibility: visible;
  }

  .hero {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
  }

  .hero::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: radial-gradient(circle, transparent 40%, rgba(0, 0, 0, 0.95) 100%);
      pointer-events: none;
      /* Wichtig: Lässt Klicks "durchfallen" */
      z-index: 5;
  }

  .em {
      position: absolute;
      font-size: 5rem;
      pointer-events: none;
      opacity: 0;
      animation: fallDiagLeft linear infinite;
      line-height: 1;
      z-index: 1;
      will-change: transform, opacity;
  }

  .card {
      background: rgba(17, 17, 17, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: 24px;
      padding: 3rem 2.5rem;
      max-width: 520px;
      width: 90%;
      text-align: center;
      box-shadow: 0 24px 48px rgba(0, 0, 0, 0.8);
      animation: fadeIn 0.8s ease both;
      position: relative;
      z-index: 10;
  }

  .title {
      font-family: 'Syne', sans-serif;
      font-size: clamp(2.2rem, 7vw, 3.4rem);
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.03em;
      margin: 0 0 0.6rem;
      animation: pulse 3s ease-in-out infinite, fadeIn 0.8s 0.2s ease both;
      opacity: 0;
      animation-fill-mode: both;
      line-height: 1.1;
  }

  .exclaim {
      color: #ff5050;
  }

  .divider {
      width: 48px;
      height: 3px;
      background: #ff5050;
      border-radius: 2px;
      margin: 0 auto 1.4rem;
      animation: fadeIn 0.8s 0.3s ease both;
      opacity: 0;
  }

  .subtitle {
      font-family: 'DM Sans', sans-serif;
      font-size: 1.05rem;
      font-weight: 400;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.75;
      margin: 0 0 2rem;
      animation: fadeIn 0.8s 0.4s ease both;
      opacity: 0;
  }

  .yt-btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: #ff0000;
      color: #fff;
      font-family: 'DM Sans', sans-serif;
      font-size: 15px;
      font-weight: 500;
      padding: 13px 28px;
      border-radius: 100px;
      text-decoration: none;
      box-shadow: 0 4px 20px rgba(255, 0, 0, 0.4);
      transition: transform 0.15s, box-shadow 0.15s;
      animation: fadeIn 0.8s 0.6s ease both;
      opacity: 0;
  }

  .yt-btn:hover {
      transform: scale(1.05);
      box-shadow: 0 6px 28px rgba(255, 0, 0, 0.6);
  }