/* ChainlessChain 页面加载动画 */

/* 加载遮罩层 */
#page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 400% 400%;
    animation: gradientMove 8s ease infinite;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

/* 背景渐变流动 */
@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 加载容器 */
.loader-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

/* Logo容器 - 调整为矩形以适应logo的实际比例 */
.loader-logo-wrapper {
    position: relative;
    width: 140px;
    height: 160px; /* 增加高度以确保logo底部不被截断 */
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-8px) scale(1.05);
    }
}

/* Logo图片 - 参照原始设计 */
.loader-logo {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: contain;
    /* 移除白色背景，让logo融入渐变背景 */
    background: transparent;
    border-radius: 50%;
    z-index: 2;
    /* 复杂多层阴影创造立体3D效果 */
    box-shadow:
        inset 3px 3px 8px rgba(255, 255, 255, 0.8),
        inset -2px -2px 6px rgba(0, 0, 0, 0.1),
        0 4px 12px rgba(102, 126, 234, 0.3),
        0 8px 24px rgba(118, 75, 162, 0.25),
        0 0 20px rgba(240, 147, 251, 0.2);
    /* 确保logo清晰显示 */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% {
        box-shadow:
            inset 3px 3px 8px rgba(255, 255, 255, 0.8),
            inset -2px -2px 6px rgba(0, 0, 0, 0.1),
            0 4px 12px rgba(102, 126, 234, 0.3),
            0 8px 24px rgba(118, 75, 162, 0.25),
            0 0 20px rgba(240, 147, 251, 0.2);
    }
    50% {
        box-shadow:
            inset 4px 4px 12px rgba(255, 255, 255, 0.9),
            inset -3px -3px 10px rgba(0, 0, 0, 0.15),
            0 6px 20px rgba(102, 126, 234, 0.4),
            0 12px 40px rgba(118, 75, 162, 0.35),
            0 0 30px rgba(240, 147, 251, 0.3),
            0 0 60px rgba(255, 182, 193, 0.15);
    }
}

/* 旋转环 - 外环 */
.loader-ring-outer {
    position: absolute;
    top: -15px;
    left: -15px;
    width: 170px;
    height: 170px;
    border-radius: 50%;
    border: 3px solid transparent;
    /* 渐变色环，更加炫酷 */
    border-top-color: rgba(255, 255, 255, 0.9);
    border-right-color: rgba(240, 182, 255, 0.6);
    animation: ringRotate 2s linear infinite;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5));
}

/* 旋转环 - 内环 */
.loader-ring-inner {
    position: absolute;
    top: -8px;
    left: -8px;
    width: 156px;
    height: 156px;
    border-radius: 50%;
    border: 2px solid transparent;
    /* 另一种渐变色，反向旋转形成对比 */
    border-bottom-color: rgba(186, 225, 255, 0.7);
    border-left-color: rgba(255, 255, 255, 0.4);
    animation: ringRotate 1.5s linear infinite reverse;
    filter: drop-shadow(0 0 8px rgba(186, 225, 255, 0.4));
}

@keyframes ringRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 立体光影层 - 参照原始设计 */
.loader-shadow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(255, 182, 193, 0.4) 30%,
        rgba(186, 85, 211, 0.2) 60%,
        transparent 70%);
    filter: blur(1px);
    animation: shadowPulse 3s ease-in-out infinite;
    z-index: 1;
}

@keyframes shadowPulse {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 1;
    }
}

/* 外部光晕 */
.loader-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    /* 彩色渐变光晕，更加梦幻 */
    background: radial-gradient(circle at center,
        rgba(255, 255, 255, 0.4) 0%,
        rgba(240, 182, 255, 0.2) 30%,
        rgba(186, 225, 255, 0.15) 50%,
        transparent 70%);
    animation: glowPulse 2s ease-in-out infinite;
    z-index: 0;
    /* 添加模糊效果 */
    filter: blur(15px);
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* 加载文字 */
.loader-text {
    color: white;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    letter-spacing: 2px;
    animation: textFade 2s ease-in-out infinite;
}

@keyframes textFade {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* 加载提示 */
.loader-tip {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    text-align: center;
    margin-top: 10px;
    animation: tipSlide 3s ease-in-out infinite;
}

@keyframes tipSlide {
    0%, 100% {
        opacity: 0.7;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(-3px);
    }
}

/* 进度条容器 */
.loader-progress-container {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 20px;
}

/* 进度条 */
.loader-progress-bar {
    height: 100%;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0.8) 0%,
        rgba(255, 255, 255, 1) 50%,
        rgba(255, 255, 255, 0.8) 100%);
    background-size: 200% 100%;
    border-radius: 2px;
    width: 0%;
    transition: width 0.3s ease;
    animation: progressShine 1.5s linear infinite;
}

@keyframes progressShine {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 粒子效果 - 彩色梦幻粒子 */
.loader-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 3s ease-in-out infinite;
    box-shadow: 0 0 10px currentColor;
}

.loader-particle:nth-child(1) {
    top: 20%;
    left: 10%;
    background: rgba(240, 182, 255, 0.8);
    animation-delay: 0s;
}

.loader-particle:nth-child(2) {
    top: 60%;
    left: 80%;
    background: rgba(186, 225, 255, 0.8);
    animation-delay: 0.5s;
}

.loader-particle:nth-child(3) {
    top: 30%;
    left: 70%;
    background: rgba(255, 255, 255, 0.9);
    animation-delay: 1s;
}

.loader-particle:nth-child(4) {
    top: 80%;
    left: 20%;
    background: rgba(255, 200, 220, 0.8);
    animation-delay: 1.5s;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(0) scale(1);
    }
    20% {
        opacity: 0.8;
    }
    80% {
        opacity: 0.8;
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(0.5);
    }
}

/* 响应式 - 平板和手机 */
@media (max-width: 768px) {
    .loader-logo-wrapper {
        width: 110px;
        height: 130px; /* 保持椭圆比例 */
    }

    .loader-shadow {
        width: 110px;
        height: 110px;
    }

    .loader-ring-outer {
        width: 140px;
        height: 140px;
        top: -15px;
        left: -15px;
        border-width: 2px; /* 稍细的边框 */
    }

    .loader-ring-inner {
        width: 126px;
        height: 126px;
        top: -8px;
        left: -8px;
        border-width: 1.5px;
    }

    .loader-glow {
        width: 160px;
        height: 160px;
        filter: blur(12px); /* 减少模糊以提升性能 */
    }

    .loader-text {
        font-size: 20px;
        letter-spacing: 1.5px;
    }

    .loader-tip {
        font-size: 13px;
    }

    .loader-progress-container {
        width: 160px;
        height: 3px;
    }

    .loader-container {
        gap: 25px;
    }

    /* 简化粒子效果 */
    .loader-particle {
        width: 4px;
        height: 4px;
        box-shadow: 0 0 6px currentColor;
    }
}

/* 小屏手机优化 */
@media (max-width: 480px) {
    .loader-logo-wrapper {
        width: 90px;
        height: 110px;
    }

    .loader-shadow {
        width: 90px;
        height: 90px;
    }

    .loader-ring-outer {
        width: 120px;
        height: 120px;
        top: -15px;
        left: -15px;
    }

    .loader-ring-inner {
        width: 106px;
        height: 106px;
    }

    .loader-glow {
        width: 140px;
        height: 140px;
    }

    .loader-text {
        font-size: 18px;
    }

    .loader-tip {
        font-size: 12px;
    }

    .loader-progress-container {
        width: 140px;
    }

    .loader-container {
        gap: 20px;
    }
}

/* 横屏优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .loader-container {
        gap: 15px;
    }

    .loader-logo-wrapper {
        width: 80px;
        height: 96px;
    }

    .loader-text {
        font-size: 16px;
    }

    .loader-tip {
        font-size: 11px;
    }
}