/* 全局样式重置 */
* {
    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;
}

/* 容器样式 */
.container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 90vw;
    position: relative;
}

/* Logo样式 */
.logo {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 24px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* 标题样式 */
h1 {
    color: #333;
    margin-bottom: 20px;
    font-size: 24px;
}

/* 难度选择器样式 */
.difficulty-selector {
    margin-bottom: 20px;
}

.difficulty-btn {
    padding: 8px 16px;
    margin: 0 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f9f9f9;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.difficulty-btn:hover {
    background-color: #e0e0e0;
}

.difficulty-btn.active {
    background-color: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

/* 游戏信息区域样式 */
.game-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 4px;
}

.info-item {
    font-size: 14px;
    color: #333;
}

.info-item span:last-child {
    font-weight: bold;
    margin-left: 5px;
}

.restart-btn {
    padding: 6px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

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

/* 游戏状态样式 */
.game-status {
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: bold;
    color: #333;
}

/* 棋盘样式 */
.board {
    display: inline-grid;
    gap: 2px;
    background-color: #ddd;
    padding: 10px;
    border-radius: 4px;
    margin: 0 auto;
}

/* 方块样式 */
.cell {
    width: 30px;
    height: 30px;
    background-color: #999;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
    border: 1px solid #777;
    border-radius: 2px;
    transition: all 0.2s ease;
}

.cell:hover {
    background-color: #aaa;
}

.cell.revealed {
    background-color: #f0f0f0;
    cursor: default;
    border: 1px solid #ddd;
}

.cell.flagged {
    background-color: #ffeb3b;
}

.cell.mine {
    background-color: #f44336;
    color: white;
}

/* 数字颜色 */
.cell.number-1 {
    color: #2196F3;
}

.cell.number-2 {
    color: #4CAF50;
}

.cell.number-3 {
    color: #f44336;
}

.cell.number-4 {
    color: #9C27B0;
}

.cell.number-5 {
    color: #FF9800;
}

.cell.number-6 {
    color: #00BCD4;
}

.cell.number-7 {
    color: #607D8B;
}

.cell.number-8 {
    color: #795548;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .logo {
        font-size: 20px;
        top: 10px;
        right: 10px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .cell {
        width: 25px;
        height: 25px;
        font-size: 12px;
    }
    
    .difficulty-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .game-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .info-item {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 16px;
        top: 8px;
        right: 8px;
    }
    
    .cell {
        width: 20px;
        height: 20px;
        font-size: 10px;
    }
    
    .difficulty-btn {
        margin: 0 3px;
        padding: 4px 8px;
    }
}