:root {
      background-color: #7DC8CF;
      font-family: system-ui, -apple-system, sans-serif;
      font-variant-numeric: tabular-nums;
      --game-width: 450px;
      --game-height: 680px;
    }

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

    body {
      height: 100vh;
      margin: 0;
      display: grid;
      place-items: center;
      background: linear-gradient(to bottom, #7DC8CF, #B3E5FC);
      overflow: hidden;
    }

    .frame {
      border: 6px solid #67442b;
      border-radius: 16px;
      background: #67442b;
      box-shadow: 0 4px 15px rgba(0,0,0,0.3);
      max-width: 90vw;
      max-height: 90vh;
    }

    #game {
      border-radius: 10px;
      user-select: none;
      width: var(--game-width);
      height: var(--game-height);
    }

    .toast {
      cursor: pointer;
      transition: transform 0.2s ease;
    }

    .toast:hover {
      transform: scale(1.1);
    }

    .toast__wings {
      animation: wings-flapping linear infinite 0.4s;
      transform-origin: center 85%;
      pointer-events: none;
    }

    .toast__eyes {
      animation: blink linear infinite 2s;
      transform-origin: center;
    }

    #start-screen, #game-over-screen {
      font-size: 36px;
      text-anchor: middle;
      pointer-events: none;
    }

    .button {
      cursor: pointer;
      pointer-events: auto;
      transition: fill 0.2s ease;
    }

    .button:hover {
      fill: #ffcc00;
    }

    @keyframes wings-flapping {
      0%, 100% { scale: 1 1; }
      50% { scale: 1 0.8; }
    }

    @keyframes blink {
      0%, 90% { scale: 1 1; }
      95%, 100% { scale: 1 0; }
    }

    @media (max-width: 500px) {
      :root {
        --game-width: 350px;
        --game-height: 500px;
      }
      #start-screen, #game-over-screen {
        font-size: 24px;
      }
    }