body {
        margin: 0;
        padding: 0;
        overflow: hidden;
        background: #020408;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        font-family: "Courier New", monospace;
      }

      #gameContainer {
        position: relative;
        display: inline-block;
        width: min(1000px, 96vw, calc(96vh * 4 / 3));
        aspect-ratio: 4 / 3;
        height: auto;
        background: #020408;
        border: 1px solid rgba(100, 150, 255, 0.2);
      }

      canvas {
        border: 1px solid rgba(100, 150, 255, 0.2); /* Subtle blue glow */
        cursor: none;
        display: block;
        width: 100%;
        height: 100%;
      }

      /* Fixed UI zones */
      .ui-zone {
        position: absolute;
        font-family: "Courier New", monospace;
        font-size: 14px;
        pointer-events: none;
        z-index: 10;
      }

      /* Top left - Title and timing */
      #topLeft {
        top: 15px;
        left: 15px;
        color: #96c8ff;
        font-size: 14px;
        opacity: 0.9;
        line-height: 1.4;
      }

      /* Top right - Element symbol */
      #topRight {
        top: 15px;
        right: 15px;
        color: #96c8ff;
        font-size: 12px;
        text-align: right;
      }

      /* Bottom left - Controls */
      #bottomLeft {
        bottom: 15px;
        left: 15px;
        color: rgba(150, 200, 255, 0.8);
        font-size: 13px;
        line-height: 1.3;
      }

      /* Bottom right - Level */
      #bottomRight {
        bottom: 15px;
        right: 15px;
        color: rgba(150, 200, 255, 0.8);
        font-size: 13px;
        text-align: right;
      }

      /* Mobile warning overlay */
      #mobile-warning {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.95);
        display: none;
        justify-content: center;
        align-items: center;
        z-index: 9999;
        text-align: center;
        padding: 20px;
        box-sizing: border-box;
      }

      #mobile-warning .content {
        background: rgba(20, 30, 50, 0.95);
        border: 2px solid rgba(100, 150, 255, 0.8);
        border-radius: 8px;
        padding: 30px;
        max-width: 400px;
        color: #96c8ff;
      }

      #mobile-warning h2 {
        color: #ff6b35;
        margin-top: 0;
        font-size: 24px;
      }

      #mobile-warning p {
        line-height: 1.5;
        margin: 15px 0;
        font-size: 16px;
      }

      #mobile-warning .icon {
        font-size: 48px;
        margin-bottom: 20px;
      }

      /* Show warning only on very small screens */
      @media (max-width: 600px), (max-height: 450px) {
        #mobile-warning {
          display: flex;
        }

        canvas,
        #info {
          display: none;
        }
      }

      /* Additional styles for very small screens */
      @media (max-width: 480px) {
        #mobile-warning .content {
          padding: 20px;
          margin: 10px;
        }

        #mobile-warning h2 {
          font-size: 20px;
        }

        #mobile-warning p {
          font-size: 14px;
        }
      }