/* 基础重置与隐藏滚动条 */
body { 
    margin: 0; 
    padding: 0;
    background-color: #050505; 
    overflow: hidden; 
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; 
    user-select: none;
}

/* 遮罩层容器 */
#overlay {
    position: absolute; 
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.7); 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    z-index: 100; 
    cursor: pointer; 
    transition: opacity 0.8s ease-in-out;
}

/* 高级毛玻璃面板 (Glassmorphism) */
.glass-panel {
    background: rgba(20, 20, 20, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 0, 255, 0.3);
    border-radius: 16px;
    padding: 3rem 5rem;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(255, 0, 255, 0.2);
}

/* 霓虹发光标题 */
.neon-text { 
    font-size: 4rem; 
    font-weight: 900;
    color: #fff;
    margin: 0 0 15px 0;
    letter-spacing: 8px;
    text-shadow: 
        0 0 10px #ff00ff,
        0 0 20px #ff00ff,
        0 0 40px #ff00ff,
        0 0 80px #ff00ff;
    animation: neon-flicker 3s infinite alternate;
}

/* 呼吸闪烁提示文字 */
.pulse-text { 
    color: #00ffff; 
    font-size: 1.2rem;
    letter-spacing: 6px; 
    margin: 0;
    animation: pulse 1.5s infinite;
}

/* HUD 信息层 */
#ui-layer {
    position: absolute; 
    bottom: 40px; 
    left: 40px; 
    z-index: 50;
    pointer-events: none; 
}

/* 小型毛玻璃 HUD */
.glass-panel-small {
    background: rgba(10, 10, 10, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-left: 4px solid #00ffff;
    padding: 15px 25px;
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.1);
}

.zebra-logo .title { 
    font-size: 22px; 
    font-weight: 800;
    font-style: italic; 
    color: #ffffff; 
    letter-spacing: 2px;
}

.zebra-logo .subtitle { 
    font-size: 14px; 
    color: #ff00ff; 
    margin-top: 5px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 1px;
}

/* 直播红点动画 */
.live-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #ff0000;
    border-radius: 50%;
    box-shadow: 0 0 8px #ff0000;
    animation: pulse-red 1s infinite;
}

/* 动画定义 */
@keyframes pulse {
    0%, 100% { opacity: 1; text-shadow: 0 0 10px #00ffff; }
    50% { opacity: 0.4; text-shadow: none; }
}

@keyframes pulse-red {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.5; }
}

@keyframes neon-flicker {
    0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
        text-shadow: 0 0 10px #ff00ff, 0 0 20px #ff00ff, 0 0 40px #ff00ff;
    }
    20%, 24%, 55% {
        text-shadow: none;
    }
}