/**
 * ROACH UI - Loader 加载组件
 * 类名: .ro-loader
 */

.ro-loader {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 99999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

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

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

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

.ro-loader-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* 小猪眨眼动画 */
.ro-loader-pig {
    width: 240px;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: ro-pig-appear 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ro-loader-pig.hiding {
    animation: ro-pig-disappear 0.25s ease-in forwards;
}

.ro-loader-pig img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
}

@keyframes ro-pig-appear {
    0% { opacity: 0; transform: scale(0.3) translateY(30px); }
    50% { transform: scale(1.1) translateY(-10px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes ro-pig-disappear {
    0% { opacity: 1; transform: scale(1); }
    30% { opacity: 0.9; transform: scale(1.08); }
    100% { opacity: 0; transform: scale(0.3); }
}

/* 信号格子动画 */
.ro-loader-signal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 50px;
    margin-top: 8px;
}

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

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