body {
      margin: 0;
      padding: 0;
      overflow: hidden;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      width: 100vw;
      background-color: #222;
      font-family: Arial, sans-serif;
    }

    .lift-container {
      position: relative;
      width: 100vw;
      height: 100vh;
      aspect-ratio: 9 / 16;
      max-width: 100%;
      max-height: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      overflow: hidden;
    }

    .lift-doors {
      position: absolute;
      width: 100%;
      height: 100%;
      background-color: #333;
      overflow: hidden;
      box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
    }

    .door {
      position: absolute;
      width: 50%;
      height: 100%;
      background: linear-gradient(135deg, #aaa, #666);
      border: 2px solid #444;
      box-shadow: 0 0 15px rgba(0, 0, 0, 0.5), inset 0 0 10px rgba(255, 255, 255, 0.2);
      transition: transform 1.5s ease-in-out;
    }

    .door-left {
      left: 0;
      border-right: 1px solid #222;
    }

    .door-right {
      right: 0;
      border-left: 1px solid #222;
    }

    .door-open .door-left {
      transform: translateX(-100%);
    }

    .door-open .door-right {
      transform: translateX(100%);
    }

    .buttons-initial {
      position: absolute;
      bottom: 5%;
      display: flex;
      justify-content: center;
      gap: 10vw;
      width: 100%;
    }

    .buttons-floor {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      display: none;
      flex-direction: column;
      gap: 8vh;
    }

    button {
      width: 15vw;
      height: 15vw;
      border-radius: 50%;
      border: 3px solid #000;
      box-shadow: 0 0 15px rgba(0, 0, 0, 0.5), inset 0 0 10px rgba(0, 0, 0, 0.3);
      cursor: pointer;
      transition: background-color 0.3s, box-shadow 0.3s;
      color: white;
      font-size: 6vw;

      /* ✅ Vertical & horizontal centering */
      display: flex;
      align-items: center;
      justify-content: center;
    }

    button:hover,
    button:active {
      background-color: #ff0;
      box-shadow: 0 0 20px rgba(255, 255, 0, 0.8), inset 0 0 15px rgba(255, 255, 0, 0.5);
    }

    .button-up,
    .button-down {
      background-color: #00f;
      border: 3px solid #00a;
      box-shadow: 0 0 15px rgba(0, 0, 255, 0.5), inset 0 0 10px rgba(0, 0, 255, 0.3);
    }

    .button-basement {
      background-color: #00f;
      border: 3px solid #00a;
      box-shadow: 0 0 15px rgba(0, 0, 255, 0.5), inset 0 0 10px rgba(0, 0, 255, 0.3);
    }

    .button-ground {
      background-color: #008000;
      border: 3px solid #006400;
      box-shadow: 0 0 15px rgba(0, 128, 0, 0.5), inset 0 0 10px rgba(0, 128, 0, 0.3);
    }

    .button-top {
      background-color: #f00;
      border: 3px solid #8b0000;
      box-shadow: 0 0 15px rgba(255, 0, 0, 0.5), inset 0 0 10px rgba(255, 0, 0, 0.3);
    }

    .indicator-panel {
      position: absolute;
      top: 5%;
      display: none;
      align-items: center;
      gap: 10px;
      background-color: #000;
      padding: 10px 20px;
      border: 2px solid #ff4500;
      box-shadow: 0 0 15px rgba(255, 69, 0, 0.5);
      font-family: 'Courier New', monospace;
    }

    .indicator-panel.active {
      display: flex;
    }

    .floor-display {
      color: #ff4500;
      font-size: 8vw;
      font-weight: bold;
      text-shadow: 0 0 10px rgba(255, 69, 0, 0.8);
    }

    .arrow {
      color: #ff4500;
      font-size: 8vw;
      text-shadow: 0 0 10px rgba(255, 69, 0, 0.8);
    }

    .lift-content {
      display: none;
      width: 100%;
      height: 100%;
      background: linear-gradient(#444, #222);
      justify-content: center;
      align-items: center;
    }

    .lift-content.active {
      display: flex;
    }

    @media (orientation: portrait) {
      .lift-container {
        aspect-ratio: 9 / 16;
      }

      button {
        width: 20vw;
        height: 20vw;
        font-size: 8vw;
      }

      .floor-display,
      .arrow {
        font-size: 8vw;
      }
    }

    @media (orientation: landscape) {
      .lift-container {
        aspect-ratio: 16 / 9;
      }

      button {
        width: 10vh;
        height: 10vh;
        font-size: 4vh;
      }

      .buttons-initial {
        gap: 5vh;
      }

      .buttons-floor {
        gap: 5vh;
      }

      .floor-display,
      .arrow {
        font-size: 4vh;
      }
    }