/**
 * ROACH UI - Game Loader 游戏画布加载组件
 * 类名: .ro-game-loader
 * 用途: 在游戏画布(container)内显示加载动画
 * 风格: 清新动漫描边
 */

.ro-game-loader {
    position: absolute;
    inset: 12px;
    background: var(--bg2);
    border-radius: var(--radius);
    z-index: 50;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ro-game-loader.hiding {
    animation: ro-game-loader-fade-out 0.25s ease-in forwards;
}

.ro-game-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

@keyframes ro-game-loader-fade-out {
    0% { opacity: 1; }
    100% { opacity: 0; }
}

.ro-game-loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

/* 信号格子动画 - 源自 ROACH UI Loader */
.ro-game-loader-signal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 50px;
}

.ro-game-loader-bar {
    width: 10px;
    background: var(--pink);
    border-radius: 3px;
    animation: ro-signal-wave 1.2s ease-in-out infinite;
}

.ro-game-loader-bar:nth-child(1) { animation-delay: 0s; }
.ro-game-loader-bar:nth-child(2) { animation-delay: 0.15s; }
.ro-game-loader-bar:nth-child(3) { animation-delay: 0.3s; }
.ro-game-loader-bar:nth-child(4) { animation-delay: 0.45s; }

@keyframes ro-signal-wave {
    0%, 100% { height: 8px; opacity: 0.3; background: var(--pink-bg); }
    25% { height: 36px; opacity: 1; background: var(--pink); }
    50% { height: 8px; opacity: 0.3; background: var(--pink-bg); }
}