/* 页面过渡动画样式 */

/* 基础过渡效果 */
body {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
    overflow-x: hidden;
}

/* 页面加载和过渡中的状态 */
body.page-transitioning {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

/* 页面初始加载状态 */
body:not(.page-loaded) {
    opacity: 0;
    transform: translateY(20px);
}

/* 滚动动画效果 */
.scroll-fade-in,
.scroll-slide-up,
.scroll-slide-right,
.scroll-slide-left {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-fade-in {
    transition-delay: 0.1s;
}

.scroll-slide-up {
    transform: translateY(50px);
}

.scroll-slide-right {
    transform: translateX(-50px);
}

.scroll-slide-left {
    transform: translateX(50px);
}

/* 元素进入视口时的状态 */
.scroll-fade-in.in-view,
.scroll-slide-up.in-view,
.scroll-slide-right.in-view,
.scroll-slide-left.in-view {
    opacity: 1;
    transform: translate(0);
}

/* 交错动画容器 */
.stagger-container {
    overflow: hidden;
}

/* 交错动画项目 */
.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-container.in-view .stagger-item.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* 页面特定过渡效果 */
.fade-in {
    animation: fadeIn 1s ease forwards;
}

.slide-up {
    animation: slideUp 0.8s ease forwards;
}

.slide-right {
    animation: slideRight 0.8s ease forwards;
}

.slide-left {
    animation: slideLeft 0.8s ease forwards;
}

/* 动画关键帧 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideRight {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideLeft {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 科技感页面切换效果 */
.tech-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
    pointer-events: none;
    opacity: 0.5;
}

.tech-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg-gradient);
    z-index: 9999;
    transform: translateY(100%);
    transition: transform 0.5s cubic-bezier(0.7, 0, 0.3, 1);
}

.tech-transition.active {
    transform: translateY(0);
}

.tech-transition::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 200, 255, 0.2), rgba(112, 0, 255, 0.2));
    opacity: 0;
    transition: opacity 0.5s ease;
}

.tech-transition.active::before {
    opacity: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .scroll-slide-up {
        transform: translateY(30px);
    }
    
    .scroll-slide-right,
    .scroll-slide-left {
        transform: translateY(30px);
    }
    
    .scroll-slide-right.in-view,
    .scroll-slide-left.in-view {
        transform: translateY(0);
    }
}