* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
body { 
    background: #000; 
    font-family: -apple-system, BlinkMacSystemFont, sans-serif; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    min-height: 100vh; 
    overflow: hidden; 
    touch-action: none; 
    position: fixed; 
    width: 100%; 
    height: 100%; 
}
.game-wrapper { 
    position: relative; 
    width: 100%; 
    height: 100%; 
    display: flex; 
    flex-direction: column; 
}
.game-header { 
    background: rgba(20,20,20,0.95); 
    backdrop-filter: blur(10px); 
    color: #fff; 
    padding: 6px 15px;
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    border-bottom: 1px solid rgba(255,255,255,0.1); 
    z-index: 100; 
    user-select: none; 
    height: 60px;
    min-height: 60px; 
}
.stat-item { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 2px; 
}
.stat-label { 
    font-size: 9px; 
    color: #aaa; 
    text-transform: uppercase; 
    letter-spacing: 0.3px; 
}
.stat-value { 
    font-size: 14px; 
    font-weight: bold; 
    text-shadow: 0 0 4px currentColor; 
}
.health { 
    color: #00ff88; 
}
.health.infinite::after { 
    content: '∞'; 
    margin-left: 3px; 
    font-size: 12px; 
}
.score { 
    color: #ffd700; 
}
.level { 
    color: #ff00ff; 
}
.bullet-type { 
    color: #00ccff; 
    font-size: 12px; 
    display: flex; 
    align-items: center; 
    gap: 4px; 
}
.bullet-color { 
    width: 12px; 
    height: 12px; 
    border-radius: 50%; 
    box-shadow: 0 0 4px currentColor; 
}
.canvas-container { 
    position: relative; 
    flex: 1; 
    display: flex; 
    justify-content: center; 
    align-items: flex-start; 
    overflow: hidden; 
    padding-top: 5px; 
    width: 100%; 
    height: calc(100% - 60px); 
}
#gameCanvas { 
    background: #000; 
    border: 2px solid rgba(0,255,255,0.4);
    display: block; 
    width: 98% !important; 
    max-width: 98% !important;
    height: 85% !important; 
    max-height: 85% !important;
    touch-action: none; 
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2); 
    margin-top: 0; 
}

/* 游戏模式选择界面 */
.mode-selection {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.mode-title {
    color: #00ff88;
    font-size: 32px;
    margin-bottom: 30px;
    text-shadow: 0 0 10px #00ff88;
    text-align: center;
}

.mode-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 80%;
    max-width: 400px;
}

.mode-btn {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border: 2px solid #00ff88;
    border-radius: 15px;
    padding: 20px;
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.mode-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
    border-color: #00ccff;
}

.mode-btn.infinite {
    border-color: #00ff88;
}

.mode-btn.limited {
    border-color: #ff0080;
}

.mode-description {
    font-size: 12px;
    color: #aaa;
    margin-top: 8px;
    opacity: 0.8;
}

/* 关卡显示样式 */
.level-info {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 15px;
    border-radius: 20px;
    border: 1px solid #ff00ff;
    color: #fff;
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    z-index: 300;
    display: none;
}

/* 生命值警告 */
.life-warning {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 0, 0, 0.8);
    padding: 15px 25px;
    border-radius: 15px;
    border: 2px solid #ff0000;
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    z-index: 400;
    display: none;
    animation: pulse 1s infinite;
}

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

/* 胜利/失败弹窗 */
.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    display: none;
}

.game-message {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    padding: 30px;
    border-radius: 20px;
    border: 3px solid #00ff88;
    text-align: center;
    max-width: 80%;
    box-shadow: 0 0 50px rgba(0, 255, 136, 0.5);
}

.game-message h2 {
    color: #00ff88;
    font-size: 32px;
    margin-bottom: 15px;
    text-shadow: 0 0 10px #00ff88;
}

.game-message p {
    color: #fff;
    font-size: 16px;
    margin: 10px 0;
}

.win-message {
    border-color: #ffd700;
    box-shadow: 0 0 50px rgba(255, 215, 0, 0.5);
}

.win-message h2 {
    color: #ffd700;
    text-shadow: 0 0 10px #ffd700;
}

.restart-btn {
    background: linear-gradient(135deg, #ff0080, #ff6600);
    border: none;
    border-radius: 25px;
    padding: 12px 30px;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    margin-top: 20px;
    cursor: pointer;
    transition: all 0.3s;
}

.restart-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 0, 128, 0.7);
}

/* 控制区域容器 */
.controls-area {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 20%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    z-index: 200;
    pointer-events: none;
}

/* 移动控制面板 - 简化的左右移动 */
.move-controls { 
    position: relative;
    display: flex;
    gap: 40px;
    margin-bottom: 15px;
    pointer-events: auto;
}
.move-btn { 
    width: 70px;
    height: 70px; 
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid #00ff88; 
    color: #00ff88; 
    border-radius: 50%;
    font-size: 28px;
    display: flex; 
    align-items: center; 
    justify-content: center; 
    cursor: pointer; 
    user-select: none; 
    transition: all 0.1s; 
    box-shadow: 0 4px 10px rgba(0, 255, 136, 0.3); 
}
.move-btn:active { 
    background: rgba(0, 255, 136, 0.3); 
    transform: scale(0.9); 
    box-shadow: 0 2px 5px rgba(0, 255, 136, 0.5); 
}

/* 切换子弹按钮 */
.mobile-controls { 
    position: relative;
    margin-bottom: 15px;
    pointer-events: auto;
}
.control-btn { 
    background: linear-gradient(135deg, #ff0080, #ff6600); 
    border: none; 
    border-radius: 50%; 
    width: 75px; 
    height: 75px; 
    color: #fff; 
    font-size: 12px; 
    font-weight: bold; 
    box-shadow: 0 6px 20px rgba(255,0,128,0.5); 
    cursor: pointer; 
    user-select: none; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    justify-content: center; 
    gap: 2px; 
    transition: all 0.1s; 
}
.control-btn:active { 
    transform: scale(0.9); 
    box-shadow: 0 3px 15px rgba(255,0,128,0.7); 
}

/* 新增：生命模式切换按钮 */
.life-mode-toggle { 
    position: relative;
    margin-bottom: 10px;
    pointer-events: auto;
}
.life-mode-btn { 
    background: rgba(0, 0, 0, 0.6); 
    border: 2px solid #00ffff; 
    border-radius: 50%; 
    width: 55px;  /* 比切换子弹按钮小 */
    height: 55px; 
    color: #00ffff; 
    font-size: 16px; /* 较小的字体 */
    font-weight: bold; 
    cursor: pointer; 
    user-select: none; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    justify-content: center; 
    gap: 1px; 
    transition: all 0.2s; 
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.3); 
}
.life-mode-btn:active { 
    transform: scale(0.9); 
    box-shadow: 0 2px 8px rgba(0, 255, 255, 0.5); 
}
.life-mode-btn.infinite {
    border-color: #00ff88;
    color: #00ff88;
}
.life-mode-btn.limited {
    border-color: #ff0080;
    color: #ff0080;
}
.life-mode-text {
    font-size: 8px; /* 很小的文字 */
    opacity: 0.9;
    margin-top: 1px;
}