* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background: #1a0c04;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    font-family: Georgia, 'Times New Roman', serif;
    padding: 24px;
}
#gameContainer {
    position: relative;
    border: 3px solid #7a4a1a;
    border-radius: 4px;
    box-shadow: 0 0 40px rgba(180, 100, 20, 0.5);
    width: 720px;
    height: 480px;
    max-width: 100%;
    max-height: 100%;
}
canvas {
    display: block;
    cursor: crosshair;
    width: 100%;
    height: 100%;
    touch-action: none;
}
#ui {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: linear-gradient(to top, rgba(20,8,0,0.8), transparent);
    pointer-events: none;
    z-index: 10;
}
#ui > div { pointer-events: auto; }
.ui-label {
    color: #ffd700;
    font-size: 16px;
    font-weight: bold;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}
.power-btn {
    background: linear-gradient(145deg, #5a3010, #301808);
    color: #e8c070;
    border: 2px solid #8b5a20;
    padding: 6px 14px;
    margin: 0 3px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    font-family: Georgia, serif;
    transition: all 0.2s;
}
.power-btn:hover { background: linear-gradient(145deg, #7a4820, #4a2810); }
.power-btn.active {
    background: linear-gradient(145deg, #ffd700, #cc9900);
    color: #1a1a2e;
    border-color: #ffed4a;
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
}
#startScreen {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(15, 6, 0, 0.92);
    z-index: 100;
    color: white;
}
#startScreen h1 {
    font-size: 52px;
    font-family: Georgia, serif;
    color: #ffd700;
    text-shadow: 0 0 30px rgba(255, 180, 0, 0.7), 2px 2px 4px rgba(0,0,0,0.8);
    margin-bottom: 20px;
    letter-spacing: 2px;
}
#startScreen p {
    color: #d4a060;
    font-size: 16px;
    margin-bottom: 8px;
    max-width: 500px;
    text-align: center;
}
#startBtn {
    margin-top: 30px;
    padding: 14px 50px;
    font-size: 22px;
    font-weight: bold;
    font-family: Georgia, serif;
    letter-spacing: 3px;
    background: linear-gradient(145deg, #ffd700, #cc8800);
    color: #1a0800;
    border: 3px solid #ffed4a;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(255, 180, 0, 0.5);
    transition: transform 0.15s;
}
#startBtn:hover { transform: scale(1.05); }

@media (max-width: 820px) {
    body {
        padding: 8px;
    }

    #ui {
        height: auto;
        min-height: 60px;
        padding: 8px 10px;
        gap: 8px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .ui-label {
        font-size: 14px;
    }

    .power-btn {
        padding: 6px 10px;
        font-size: 13px;
        min-width: 44px;
        min-height: 36px;
    }

    #startScreen {
        padding: 24px 16px;
    }

    #startScreen h1 {
        font-size: 34px;
        margin-bottom: 14px;
    }

    #startScreen p {
        font-size: 14px;
        margin-bottom: 6px;
    }

    #startBtn {
        margin-top: 18px;
        padding: 12px 24px;
        font-size: 18px;
    }
}