:root {
    --primary-color: #00f3ff;
    --secondary-color: #bc13fe;
    --danger-color: #ff2a2a;
    --success-color: #0aff0a;
    --bg-dark: #050510;
    --glass-bg: rgba(10, 15, 30, 0.85);
    --border-glow: 0 0 10px rgba(0, 243, 255, 0.5);
}

* {
    box-sizing: border-box;
    user-select: none;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-dark);
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    /* 添加一个简单的网格背景 */
    background-image: 
        linear-gradient(rgba(0, 243, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 243, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.main-wrapper {
    width: 100%;
    height: 100%;
    max-width: 600px; /* 限制最大宽度以保持手机游戏比例 */
    position: relative;
    box-shadow: 0 0 50px rgba(0,0,0,0.8);
}

#game-container {
    width: 100%;
    height: 100%;
    position: relative;
    background: #000;
    overflow: hidden;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* 通用屏幕样式 */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
}

.overlay-screen {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

/* 菜单盒子 */
.menu-box {
    background: var(--glass-bg);
    border: 1px solid var(--primary-color);
    box-shadow: var(--border-glow), inset 0 0 20px rgba(0, 243, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    min-width: 300px;
    animation: fadeIn 0.5s ease-out;
}

.game-title {
    font-size: 3rem;
    color: transparent;
    -webkit-text-stroke: 2px var(--primary-color);
    text-shadow: 0 0 20px var(--primary-color);
    margin-bottom: 2rem;
    letter-spacing: 5px;
    font-style: italic;
}

/* 控件样式 */
.cyber-btn {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 12px 30px;
    font-size: 1.2rem;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    width: 100%;
}

.cyber-btn:hover {
    background: var(--primary-color);
    color: #000;
    box-shadow: 0 0 20px var(--primary-color);
}

.cyber-btn.warning {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.cyber-btn.warning:hover {
    background: var(--danger-color);
    color: #fff;
}

.cyber-select {
    background: rgba(0,0,0,0.5);
    color: white;
    border: 1px solid var(--primary-color);
    padding: 10px;
    width: 100%;
    margin-bottom: 15px;
    outline: none;
}

/* HUD 样式 */
#hud-header, #hud-footer {
    position: absolute;
    left: 0;
    width: 100%;
    padding: 15px;
    pointer-events: none; /* 允许点击穿透到Canvas */
    display: flex;
    justify-content: space-between;
}

#hud-header { top: 0; }
#hud-footer { bottom: 0; align-items: flex-end; }

.hud-item {
    text-shadow: 0 0 5px currentColor;
}

.score-box { color: var(--primary-color); font-size: 1.5rem; font-weight: bold; }
.goal-box { color: var(--success-color); font-size: 1rem; text-align: right; }

.status-bar {
    flex-grow: 1;
    margin-right: 20px;
}

.hp-container, .exp-container {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
    font-size: 12px;
}

.bar-bg {
    flex-grow: 1;
    height: 8px;
    background: rgba(255,255,255,0.2);
    margin: 0 10px;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 98% 100%, 0% 100%);
}

#hp-bar-fill {
    height: 100%;
    background: var(--danger-color);
    box-shadow: 0 0 5px var(--danger-color);
    transition: width 0.2s;
}

#exp-bar-fill {
    height: 100%;
    background: var(--secondary-color);
    box-shadow: 0 0 5px var(--secondary-color);
    transition: width 0.2s;
}

#pause-button {
    pointer-events: auto;
    background: rgba(0,0,0,0.5);
    border: 1px solid white;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 5px;
    cursor: pointer;
}

/* 技能选择按钮动态生成 */
.skill-btn {
    position: absolute;
    z-index: 100;
    background: var(--secondary-color);
    border: none;
    color: white;
    padding: 15px 20px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 0 10px var(--secondary-color);
    transform: translateX(-50%);
    transition: transform 0.2s;
}
.skill-btn:hover { transform: translateX(-50%) scale(1.1); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }