* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    touch-action: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Arial', sans-serif;
    background: #1a1a1a;
    color: #fff;
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

#gameContainer {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#gameCanvas {
    display: block;
    background: #2a2a2a;
    max-width: 100%;
    max-height: 100%;
    touch-action: none;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.9);
    z-index: 100;
}

.screen.hidden {
    display: none;
}

.screen h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
    text-shadow: 0 0 10px #ff6b6b;
}

.screen h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.screen p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.victory-title {
    font-size: 2.5rem;
    letter-spacing: 0.2rem;
    color: #ff9edc;
    text-shadow: 0 0 15px rgba(255, 158, 220, 0.8);
}

#victoryScreen {
    background: rgba(10, 10, 30, 0.92);
}

.btn {
    padding: 15px 40px;
    font-size: 1.2rem;
    background: #ff6b6b;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.btn:active {
    transform: scale(0.95);
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
}

#gameUI {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 50;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

#gameUI.hidden {
    display: none;
}

#score, #lives {
    margin-bottom: 5px;
}

/* 手机控制界面 */
#controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    z-index: 50;
    pointer-events: none;
}

#controls.hidden {
    display: none;
}

/* 虚拟摇杆 */
#joystick {
    position: absolute;
    bottom: 20px;
    left: 20px;
    width: 120px;
    height: 120px;
    pointer-events: auto;
}

#joystickBase {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 3px solid rgba(255, 255, 255, 0.4);
    position: relative;
}

#joystickHandle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin: -25px 0 0 -25px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(255, 255, 255, 0.9);
    transition: transform 0.1s;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

#joystickHandle.active {
    background: rgba(255, 107, 107, 0.9);
}

/* 射击按钮 */
#shootBtn {
    position: absolute;
    bottom: 30px;
    right: 30px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 107, 107, 0.8);
    color: white;
    border: 3px solid rgba(255, 255, 255, 0.6);
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    pointer-events: auto;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
    transition: all 0.1s;
}

#shootBtn:active {
    transform: scale(0.9);
    background: rgba(255, 107, 107, 1);
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.6);
}

/* 响应式设计 */
@media (max-width: 480px) {
    .screen h1 {
        font-size: 2rem;
    }
    
    .screen h2 {
        font-size: 1.5rem;
    }
    
    .screen p {
        font-size: 1.2rem;
    }
    
    #joystick {
        width: 100px;
        height: 100px;
    }
    
    #joystickHandle {
        width: 40px;
        height: 40px;
        margin: -20px 0 0 -20px;
    }
    
    #shootBtn {
        width: 80px;
        height: 80px;
        font-size: 1rem;
    }
    
    #gameUI {
        font-size: 1rem;
    }
}

/* 横屏适配 */
@media (orientation: landscape) and (max-height: 500px) {
    #controls {
        height: 150px;
    }
    
    #joystick {
        width: 90px;
        height: 90px;
        bottom: 15px;
        left: 15px;
    }
    
    #joystickHandle {
        width: 35px;
        height: 35px;
        margin: -17.5px 0 0 -17.5px;
    }
    
    #shootBtn {
        width: 70px;
        height: 70px;
        bottom: 20px;
        right: 20px;
        font-size: 0.9rem;
    }
}