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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.game-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 800px;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.color-display {
    width: 50px;
    height: 50px;
    border-radius: 5px;
    border: 2px solid #333;
    margin-top: 5px;
}

#game-area {
    position: relative;
    width: 100%;
    height: 400px;
    background-color: #eee;
    border-radius: 5px;
    margin-bottom: 20px;
    overflow: hidden;
}

.color-element {
    position: absolute;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

.color-element:hover {
    transform: scale(1.05);
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

button {
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

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

select {
    padding: 8px;
    border-radius: 5px;
    border: 1px solid #ddd;
}

#game-over {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    z-index: 100;
}

#game-over h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

#game-over p {
    font-size: 24px;
    margin-bottom: 30px;
}

.hidden {
    display: none !important;
}

/* 在 CSS 文件末尾添加 */
@media (max-width: 768px) {
    .game-container {
        width: 95%;
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        align-items: center;
    }
    
    #game-area {
        height: 300px;
    }
    
    .controls {
        flex-direction: column;
        gap: 10px;
    }
}

/* 添加暂停覆盖层样式 */
#pause-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

#pause-overlay h2 {
    color: white;
    font-size: 24px;
}

/* 添加教程样式 */
#tutorial {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    z-index: 100;
    max-width: 80%;
    max-height: 80%;
    overflow-y: auto;
}

#tutorial h2 {
    margin-bottom: 15px;
    text-align: center;
}

#tutorial ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

#tutorial li {
    margin-bottom: 8px;
}

#close-tutorial {
    display: block;
    margin: 0 auto;
}

/* 添加进度条样式 */
.progress-container {
    width: 100%;
    height: 10px;
    background-color: #eee;
    border-radius: 5px;
    margin-top: 10px;
    overflow: hidden;
}

#progress-bar {
    height: 100%;
    background-color: #4CAF50;
    width: 0;
    transition: width 0.3s;
}

/* 添加升级消息样式 */
/* 成就通知样式 */
.achievement-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: rgba(76, 175, 80, 0.9);
    color: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    z-index: 100;
    transition: opacity 1s;
}

/* 升级消息样式 */
.level-up-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(76, 175, 80, 0.9);
    color: white;
    padding: 20px 40px;
    border-radius: 10px;
    font-size: 24px;
    font-weight: bold;
    z-index: 100;
    transition: opacity 1s;
}

/* 浮动文字样式 */
.floating-text {
    font-size: 18px;
    z-index: 5;
    transition: opacity 0.5s, top 0.5s;
}

/* 成就容器样式 */
#achievements-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    z-index: 100;
    max-width: 80%;
    max-height: 80%;
    overflow-y: auto;
}

#achievements-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin: 15px 0;
}

.achievement-item {
    background-color: #f5f5f5;
    padding: 10px;
    border-radius: 5px;
    border-left: 4px solid #4CAF50;
}

.achievement-locked {
    opacity: 0.5;
    border-left-color: #999;
}

/* 游戏介绍和页脚样式 */
.game-header {
    max-width: 800px;
    margin: 0 auto 20px;
    text-align: center;
    padding: 10px;
}

.game-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #4CAF50;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.game-intro {
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.game-footer {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.game-features, .how-to-play-summary {
    margin-bottom: 20px;
}

.game-features h2, .how-to-play-summary h2 {
    color: #4CAF50;
    border-bottom: 2px solid #4CAF50;
    padding-bottom: 5px;
    margin-bottom: 10px;
}

.game-features ul {
    padding-left: 20px;
}

.game-features li {
    margin-bottom: 8px;
}

.copyright {
    text-align: center;
    font-size: 0.8rem;
    color: #666;
    margin-top: 20px;
}

/* 确保在暗色主题下内容仍然可读 */
.dark .game-intro, .dark .game-footer {
    background-color: rgba(60, 60, 60, 0.8);
    color: #eee;
}

.dark .game-header h1, .dark .game-features h2, .dark .how-to-play-summary h2 {
    color: #6ECF73;
}

.dark .copyright {
    color: #aaa;
}