/* 滚动动画效果 CSS */

/* 基础设置：初始状态为不可见 */
.scroll-fade-up,
.scroll-fade-in,
.scroll-fade-right,
.scroll-fade-left {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* 向上滑入 */
.scroll-fade-up {
    transform: translateY(30px);
}

/* 从右侧滑入 */
.scroll-fade-right {
    transform: translateX(-30px);
}

/* 从左侧滑入 */
.scroll-fade-left {
    transform: translateX(30px);
}

/* 淡入效果 */
.scroll-fade-in {
    transform: scale(0.95);
}

/* 激活状态：元素可见 */
.scroll-fade-up.active,
.scroll-fade-in.active,
.scroll-fade-right.active,
.scroll-fade-left.active {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* 延迟动画效果 */
.delay-100 {
    transition-delay: 0.1s;
}

.delay-200 {
    transition-delay: 0.2s;
}

.delay-300 {
    transition-delay: 0.3s;
}

.delay-400 {
    transition-delay: 0.4s;
}

.delay-500 {
    transition-delay: 0.5s;
}

/* 连续元素动画 */
.scroll-sequence > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.scroll-sequence > *.active {
    opacity: 1;
    transform: translateY(0);
}

/* 连续元素的延迟设置 */
.scroll-sequence > *:nth-child(1) { transition-delay: 0.1s; }
.scroll-sequence > *:nth-child(2) { transition-delay: 0.2s; }
.scroll-sequence > *:nth-child(3) { transition-delay: 0.3s; }
.scroll-sequence > *:nth-child(4) { transition-delay: 0.4s; }
.scroll-sequence > *:nth-child(5) { transition-delay: 0.5s; }
.scroll-sequence > *:nth-child(6) { transition-delay: 0.6s; }
.scroll-sequence > *:nth-child(7) { transition-delay: 0.7s; }
.scroll-sequence > *:nth-child(8) { transition-delay: 0.8s; }

/* 无限循环动画效果 */
@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0);
    }
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .scroll-fade-up,
    .scroll-fade-in,
    .scroll-fade-right,
    .scroll-fade-left {
        transition-duration: 0.4s;
    }
}

/* 针对用户偏好减少动画的设置 */
@media (prefers-reduced-motion: reduce) {
    .scroll-fade-up,
    .scroll-fade-in,
    .scroll-fade-right,
    .scroll-fade-left,
    .scroll-sequence > *,
    .animate-float,
    .animate-pulse {
        transition: none !important;
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}