* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    image-rendering: pixelated;
}

body {
    font-family: 'Press Start 2P', cursive, Arial, sans-serif;
    background-color: #1a1a2e;
    color: #e6e6e6;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 10px;
}

.game-title {
    font-size: 24px;
    margin: 15px 0;
    text-align: center;
    color: #4ecdc4;
    text-shadow: 3px 3px 0 #000;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 500px;
}

.game-header {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 10px;
    background-color: #162447;
    padding: 10px;
    border-radius: 8px;
    border: 3px solid #0f3460;
}

.score-container {
    font-size: 16px;
    color: #f8f8f8;
    background-color: #0f3460;
    padding: 8px 12px;
    border-radius: 5px;
    border: 2px solid #4ecdc4;
}

.controls-container {
    display: flex;
    gap: 8px;
}

.pixel-button {
    font-family: 'Press Start 2P', cursive;
    background-color: #4ecdc4;
    color: #1a1a2e;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    border: 2px solid #0f3460;
}

.game-board {
    position: relative;
    width: 100%;
    max-width: 400px;
    height: 400px;
    border: 4px solid #0f3460;
    border-radius: 5px;
    overflow: hidden;
    background-color: #1f4068;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

#gameCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.customization-panel {
    width: 100%;
    margin-top: 15px;
    background-color: #162447;
    padding: 15px;
    border-radius: 8px;
    border: 3px solid #0f3460;
}

.panel-title {
    font-size: 16px;
    margin-bottom: 10px;
    color: #4ecdc4;
    text-align: center;
}

.customization-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.option-group {
    display: flex;
    flex-direction: column;
}

.option-label {
    font-size: 12px;
    margin-bottom: 5px;
    color: #e6e6e6;
}

.skin-options,
.background-options {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.skin-option,
.background-option {
    width: 30px;
    height: 30px;
    border: 2px solid #0f3460;
    border-radius: 4px;
    cursor: pointer;
}

.skin-option.active,
.background-option.active {
    border-color: #4ecdc4;
    box-shadow: 0 0 5px #4ecdc4;
}

.mobile-controls {
    display: none;
    /* 默认隐藏 */
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    gap: 5px;
    width: 150px;
    height: 150px;
    margin-top: 20px;
}

.control-btn {
    background-color: #0f3460;
    border: 2px solid #4ecdc4;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #4ecdc4;
    cursor: pointer;
    user-select: none;
}

.control-btn:active {
    background-color: #4ecdc4;
    color: #0f3460;
}

#up-btn {
    grid-column: 2;
    grid-row: 1;
}

#left-btn {
    grid-column: 1;
    grid-row: 2;
}

#right-btn {
    grid-column: 3;
    grid-row: 2;
}

#down-btn {
    grid-column: 2;
    grid-row: 3;
}

.game-over {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.game-over-text {
    font-size: 24px;
    color: #e94560;
    margin-bottom: 20px;
    text-align: center;
}

@media (max-width: 768px) {
    .game-title {
        font-size: 20px;
    }

    .game-board {
        height: 70vw;
        max-width: 90vw;
    }

    .pixel-button {
        padding: 6px 10px;
        font-size: 10px;
    }

    .score-container {
        font-size: 14px;
    }

    .mobile-controls {
        display: grid;
    }

    /* 只在移动设备上显示 */
}

@media (max-width: 480px) {
    .game-title {
        font-size: 18px;
    }

    .customization-options {
        grid-template-columns: 1fr;
    }
}