body {
    margin: 0;
    padding: 0;
    background: #000;
    font-family: Arial, sans-serif;
}

.game-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
}

.game-info {
    display: flex;
    justify-content: space-between;
    color: white;
    font-size: 24px;
    margin-bottom: 20px;
}

#game-area {
    width: 100%;
    height: 400px;
    background: #000;
    position: relative;
    border-radius: 10px;
    overflow: hidden;
}

.target {
    position: absolute;
    width: 65px;
    height: 65px;
    cursor: pointer;
    transition: all 0.1s ease;
}

.target img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.leaderboard {
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 10px;
}

#start-button {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    font-size: 18px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#start-button:hover {
    background: #45a049;
}

.difficulty-selector {
    margin-bottom: 20px;
    color: white;
}

#difficulty {
    padding: 5px 10px;
    font-size: 16px;
    border-radius: 5px;
}

.countdown {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 100px;
    color: white;
    z-index: 100;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.input-group {
    margin: 20px 0;
}

.input-group input {
    padding: 5px 10px;
    font-size: 16px;
    margin-left: 10px;
}

.hidden {
    display: none;
}

@media screen and (max-width: 768px) {
    .game-container {
        max-width: 100%;
        margin: 5px;
        padding: 5px;
        position: relative;
        height: 100vh;
        display: flex;
        flex-direction: column;
    }

    .game-info {
        font-size: 16px;
        margin-bottom: 10px;
    }

    #game-area {
        height: 60vh;
        width: 95vw;
        margin: 0 auto;
        margin-bottom: 80px;
    }

    .leaderboard-container {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease;
        z-index: 1000;
    }

    .toggle-leaderboard-btn {
        display: block;
        width: 100%;
        padding: 10px;
        background: #4CAF50;
        color: white;
        border: none;
        border-radius: 5px 5px 0 0;
        cursor: pointer;
        font-size: 16px;
    }

    .leaderboard {
        padding: 10px;
        max-height: 50vh;
        overflow-y: auto;
        transition: max-height 0.3s ease;
    }

    .leaderboard.collapsed {
        max-height: 0;
        overflow: hidden;
        padding: 0;
    }

    #leaderboard-list {
        margin: 0;
        padding: 0;
    }

    #start-button {
        position: fixed;
        bottom: 80px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 98;
        padding: 12px 30px;
        font-size: 18px;
        border-radius: 25px;
        background: linear-gradient(145deg, #4CAF50, #45a049);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: all 0.3s ease;
    }

    .target {
        width: 60px;
        height: 60px;
    }

    .countdown-timer {
        font-size: 60px;
    }

    .modal-content {
        width: 90%;
        margin: 0 10px;
        font-size: 14px;
    }

    .input-group input {
        width: 80%;
        margin: 5px 0;
    }

    /* 調整開始按鈕位置和層級 */
    #start-button {
        position: fixed;
        bottom: 80px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 98;
        padding: 12px 30px;
        font-size: 18px;
        border-radius: 25px;
        background: linear-gradient(145deg, #4CAF50, #45a049);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: all 0.3s ease;
    }

    /* 提高排行榜容器的層級 */
    .leaderboard-container {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        z-index: 9999;
    }

    /* 確保排行榜內容也有較高的層級 */
    .mobile-leaderboard {
        position: relative;
        z-index: 9999;
        padding: 10px;
        max-height: 50vh;
        overflow-y: auto;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.1);
    }

    /* 確保切換按鈕也有較高的層級 */
    .toggle-leaderboard-btn {
        position: relative;
        z-index: 9999;
        width: 100%;
        padding: 12px;
        background: linear-gradient(145deg, #4CAF50, #45a049);
        color: white;
        border: none;
        border-radius: 10px 10px 0 0;
        font-weight: bold;
    }

    /* 添加開始按鈕隱藏的樣式 */
    #start-button.hidden-mobile {
        display: none;
    }
}

.countdown-timer {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 120px;
    color: rgba(255, 255, 255, 0.3);
    z-index: 1;
    pointer-events: none;
}

.particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

#leaderboard-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

#leaderboard-list li:last-child {
    border-bottom: none;
}

#leaderboard-list .rank {
    width: 80px;
    font-weight: bold;
}

#leaderboard-list .name {
    width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#leaderboard-list .score {
    width: 80px;
    color: #e44d26;
    font-weight: bold;
}

#leaderboard-list .difficulty {
    width: 60px;
    color: #4CAF50;
}

#leaderboard-list .date {
    width: 120px;
    color: #666;
    font-size: 0.9em;
}

/* 桌面版的排行榜樣式 */
.leaderboard {
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 10px;
}

/* 在桌面隱藏手機版的排行榜容器和按鈕 */
.leaderboard-container {
    display: none;  /* 完全隱藏手機版容器 */
}

.toggle-leaderboard-btn {
    display: none;  /* 完全隱藏切換按鈕 */
}

/* 手機版的樣式 */
@media screen and (max-width: 768px) {
    /* ... 其他手機版樣式保持不變 ... */

    /* 在手機版顯示排行榜容器和按鈕 */
    .leaderboard-container {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease;
        z-index: 1000;
    }

    .toggle-leaderboard-btn {
        display: block;
        width: 100%;
        padding: 10px;
        background: #4CAF50;
        color: white;
        border: none;
        border-radius: 5px 5px 0 0;
        cursor: pointer;
        font-size: 16px;
    }

    /* 在手機版隱藏原本的排行榜 */
    .leaderboard:not(.collapsed) {
        display: block;
    }

    .mobile-leaderboard {
        padding: 10px;
        max-height: 50vh;
        overflow-y: auto;
        transition: max-height 0.3s ease;
    }

    /* 確保收起狀態時完全隱藏 */
    .mobile-leaderboard.collapsed {
        max-height: 0;
        overflow: hidden;
        padding: 0;
        margin: 0;
        border: none;
    }
} 

/* 桌面版排行榜 */
.desktop-leaderboard {
    display: block;
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 10px;
}

/* 手機版排行榜容器（預設隱藏） */
.leaderboard-container {
    display: none;
}

/* 手機版樣式 */
@media screen and (max-width: 768px) {
    /* 隱藏桌面版排行榜 */
    .desktop-leaderboard {
        display: none !important;  /* 強制隱藏 */
    }

    /* 顯示手機版排行榜容器 */
    .leaderboard-container {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
    }

    .toggle-leaderboard-btn {
        display: block;
        width: 100%;
        padding: 10px;
        background: #4CAF50;
        color: white;
        border: none;
        border-radius: 5px 5px 0 0;
        cursor: pointer;
        font-size: 16px;
    }

    .mobile-leaderboard {
        padding: 10px;
        max-height: 50vh;
        overflow-y: auto;
        transition: all 0.3s ease;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
    }

    .mobile-leaderboard.collapsed {
        max-height: 0 !important;
        padding: 0 !important;
        overflow: hidden;
        border: none;
    }

    /* ... 其他手機版樣式保持不變 ... */
} 

/* 桌面版排行榜樣式 */
.desktop-leaderboard {
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 10px;
}

/* 手機版按鈕預設隱藏 */
.leaderboard-container .toggle-leaderboard-btn {
    display: none;
}

/* 手機版樣式 */
@media screen and (max-width: 768px) {
    /* 排行榜容器樣式 */
    .leaderboard-container {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
    }

    /* 顯示切換按鈕 */
    .leaderboard-container .toggle-leaderboard-btn {
        display: block;
        width: 100%;
        padding: 10px;
        background: #4CAF50;
        color: white;
        border: none;
        border-radius: 5px 5px 0 0;
        cursor: pointer;
        font-size: 16px;
    }

    /* 排行榜樣式 */
    .desktop-leaderboard {
        margin: 0;
        padding: 10px;
        max-height: 50vh;
        overflow-y: auto;
        transition: all 0.3s ease;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
    }

    /* 收起狀態 */
    .desktop-leaderboard.collapsed {
        max-height: 0;
        padding: 0;
        overflow: hidden;
        border: none;
    }

    /* 調整排行榜內容樣式 */
    .desktop-leaderboard h2 {
        margin: 0 0 10px 0;
        font-size: 18px;
    }

    #leaderboard-list {
        margin: 0;
        padding: 0;
        font-size: 14px;
    }

    #leaderboard-list li {
        padding: 5px 0;
    }
} 

/* 手機版排行榜樣式 */
@media screen and (max-width: 768px) {
    /* ... 其他手機版樣式保持不變 ... */

    .leaderboard-container {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
    }

    .toggle-leaderboard-btn {
        display: block;
        width: 100%;
        padding: 12px;
        background: linear-gradient(145deg, #4CAF50, #45a049);
        color: white;
        border: none;
        border-radius: 10px 10px 0 0;
        cursor: pointer;
        font-size: 16px;
        font-weight: bold;
        text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
        transition: background-color 0.3s ease;
    }

    .toggle-leaderboard-btn:active {
        background: linear-gradient(145deg, #45a049, #4CAF50);
    }

    .mobile-leaderboard {
        padding: 15px;
        max-height: 50vh;
        overflow-y: auto;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.1);
        border-radius: 15px 15px 0 0;
        transition: all 0.3s ease;
    }

    .mobile-leaderboard h2 {
        margin: 0 0 15px 0;
        color: #333;
        font-size: 20px;
        text-align: center;
        text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
    }

    .mobile-leaderboard #leaderboard-list-mobile {
        margin: 0;
        padding: 0;
        list-style: none;
    }

    .mobile-leaderboard #leaderboard-list-mobile li {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 12px 10px;
        margin-bottom: 8px;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 8px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        transition: transform 0.2s ease;
    }

    .mobile-leaderboard #leaderboard-list-mobile li:last-child {
        margin-bottom: 0;
    }

    .mobile-leaderboard #leaderboard-list-mobile li:active {
        transform: scale(0.98);
    }

    .mobile-leaderboard .rank {
        font-weight: bold;
        color: #4CAF50;
        min-width: 70px;
    }

    .mobile-leaderboard .name {
        flex: 1;
        margin: 0 10px;
        color: #333;
        font-weight: 500;
    }

    .mobile-leaderboard .score {
        color: #e44d26;
        font-weight: bold;
        min-width: 80px;
        text-align: right;
    }

    .mobile-leaderboard .date {
        color: #666;
        font-size: 0.8em;
        min-width: 100px;
        text-align: right;
    }

    /* 收起狀態的動畫 */
    .mobile-leaderboard.collapsed {
        max-height: 0;
        padding: 0;
        opacity: 0;
        transform: translateY(20px);
    }

    /* 調整開始按鈕位置，避免被排行榜遮擋 */
    #start-button {
        position: fixed;
        bottom: 70px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1001;
        padding: 12px 30px;
        font-size: 18px;
        border-radius: 25px;
        background: linear-gradient(145deg, #4CAF50, #45a049);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: all 0.3s ease;
    }

    #start-button:active {
        transform: translateX(-50%) scale(0.95);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    }
} 

/* 排行榜標題和切換按鈕容器 */
.leaderboard-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 15px;
    text-align: center;
}

/* 切換按鈕容器 */
.leaderboard-switch {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.1);
    padding: 5px;
    border-radius: 50px;
    position: relative;
    margin: 10px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 切換按鈕樣式 */
.switch-btn {
    min-width: 100px;
    height: 40px;
    background: transparent;
    border: none;
    padding: 0 20px;
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #666;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 25px;
    z-index: 1;
}

/* 活動狀態和懸停效果 */
.switch-btn.active {
    color: #fff;
    background: linear-gradient(145deg, #4CAF50, #45a049);
    box-shadow: 0 2px 10px rgba(76, 175, 80, 0.3);
}

.switch-btn:hover:not(.active) {
    color: #4CAF50;
    background: rgba(76, 175, 80, 0.1);
}

/* 手機版特別樣式 */
@media screen and (max-width: 768px) {
    .leaderboard-switch {
        padding: 4px;
    }

    .switch-btn {
        min-width: 80px;
        height: 36px;
        font-size: 15px;
        padding: 0 15px;
    }
}

/* 添加動畫效果 */
.switch-btn {
    overflow: hidden;
}

.switch-btn:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: -100%;
    background: linear-gradient(90deg, 
        rgba(255,255,255,0) 0%, 
        rgba(255,255,255,0.2) 50%, 
        rgba(255,255,255,0) 100%);
    transition: all 0.3s ease;
}

.switch-btn:hover:after {
    left: 100%;
}

/* 按鈕點擊效果 */
.switch-btn:active {
    transform: scale(0.95);
}

/* 防止頁面捲動 */
@media screen and (max-width: 768px) {
    html, body {
        height: 100%;
        overflow: hidden;
        position: fixed;
        width: 100%;
    }

    .game-container {
        height: 100%;
        overflow: hidden;
        position: relative;
        margin: 0;
        padding: 10px;
    }

    #game-area {
        height: calc(100vh - 200px); /* 調整高度，留出空間給其他元素 */
        margin-bottom: 60px;
    }

    .mobile-leaderboard {
        /* 確保排行榜可以滾動 */
        max-height: 50vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch; /* 為 iOS 提供平滑滾動 */
    }

    /* 確保開始按鈕位置正確 */
    #start-button {
        position: fixed;
        bottom: 80px;
    }
}

/* 模態框按鈕基本樣式 */
#submit-score {
    padding: 12px 30px;
    font-size: 18px;
    background: linear-gradient(145deg, #4CAF50, #45a049);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* 手機版模態框樣式 */
@media screen and (max-width: 768px) {
    #submit-score {
        width: 80%;          /* 加寬按鈕 */
        padding: 15px 30px;  /* 增加內邊距 */
        font-size: 20px;     /* 加大字體 */
        margin: 10px auto;   /* 置中對齊 */
        border-radius: 30px; /* 更圓潤的邊角 */
    }

    .modal-content {
        width: 90%;
        padding: 25px;
        border-radius: 15px;
    }

    .input-group {
        margin: 25px 0;
    }

    .input-group input {
        width: 80%;
        padding: 12px;
        font-size: 18px;
        margin: 10px auto;
        border-radius: 10px;
        border: 2px solid #4CAF50;
    }
}