body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f8ff;
    font-family: Arial, sans-serif;
}

.game-container {
    position: relative;
    width: 800px;
    height: 600px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.game-info {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 1;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 10px 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.score, .timer {
    font-size: 20px;
    margin: 5px 0;
    color: #333;
}

#game-area {
    width: 100%;
    height: 100%;
    position: relative;
    background-color: #e8f4f8;
}

.crab {
    position: absolute;
    width: 60px;
    height: 40px;
    border-radius: 50% 50% 0 0;
    cursor: pointer;
    transition: transform 0.1s;
}

.claw {
    position: absolute;
    width: 35px;
    height: 20px;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}

.left-claw {
    top: -10px;
    left: -18px;
    transform: rotate(-30deg);
}

.right-claw {
    top: -10px;
    right: -18px;
    transform: rotate(30deg);
}

/* 不同速度的螃蟹颜色 */
.crab.speed-slow {
    background-color: #4CAF50; /* 绿色 - 慢速 */
}

.crab.speed-slow .claw {
    background-color: #4CAF50;
}

.crab.speed-medium {
    background-color: #FF9800; /* 橙色 - 中速 */
}

.crab.speed-medium .claw {
    background-color: #FF9800;
}

.crab.speed-fast {
    background-color: #f44336; /* 红色 - 快速 */
}

.crab.speed-fast .claw {
    background-color: #f44336;
}

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

/* 添加螃蟹消失的动画 */
@keyframes disappear {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }
    100% {
        transform: scale(0);
        opacity: 0;
    }
}

.crab.caught {
    animation: disappear 0.5s ease-out forwards;
    pointer-events: none;
}

#game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.hidden {
    display: none;
}

#restart-button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 18px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#restart-button:hover {
    background-color: #45a049;
}

.crab-bag {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 100px;
    height: 120px;
    background-color: rgba(139, 69, 19, 0.3); /* 半透明棕色 */
    border: 2px solid rgba(139, 69, 19, 0.8);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 2;
    overflow: hidden; /* 确保螃蟹不会溢出袋子 */
}

.crab-bag::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 20px;
    background-color: rgba(139, 69, 19, 0.8);
    border-radius: 20px 20px 0 0;
}

.bag-content {
    color: white;
    font-size: 24px;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    z-index: 3; /* 确保数字显示在螃蟹上面 */
}

.crab-bag.bag-medium {
    background-color: rgba(255, 165, 0, 0.3);
    border-color: rgba(255, 165, 0, 0.8);
    animation: shake 0.5s ease-in-out;
}

.crab-bag.bag-warning {
    background-color: rgba(255, 69, 0, 0.3);
    border-color: rgba(255, 69, 0, 0.8);
    animation: shake 0.3s ease-in-out infinite;
}

@keyframes shake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

@keyframes flyToBag {
    0% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: scale(0.8) rotate(180deg);
        opacity: 0.8;
    }
    100% {
        transform: scale(0.4) rotate(360deg);
        opacity: 0.6;
    }
}

.crab.caught {
    animation: flyToBag 0.8s ease-out forwards;
    pointer-events: none;
    z-index: 1;
}

/* 确保袋子里的螃蟹样式 */
.crab-bag .crab {
    position: absolute;
    width: 30px; /* 袋子里的螃蟹更小 */
    height: 20px;
    animation: none;
    pointer-events: none;
}