.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.page-transition::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0,0,0,0.1);
    border-radius: 50%;
}

.page-transition::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid transparent;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.page-transition.active {
    opacity: 1;
    pointer-events: all;
}

/* 页面加载动画 */
body {
    opacity: 0;
    animation: pageIn 0.5s ease-in forwards;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes pageIn {
    from { 
        opacity: 0;
        transform: scale(0.98);
    }
    to { 
        opacity: 1;
        transform: scale(1);
    }
}