/* 动画关键帧 */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

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

/* 动画类 */
.fade-in {
    opacity: 0;
}

.fade-in.animated {
    animation: fadeIn 1s ease forwards;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
}

.slide-in-left.animated {
    animation: fadeInLeft 0.8s ease forwards;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(30px);
}

.slide-in-right.animated {
    animation: fadeInRight 0.8s ease forwards;
}

.slide-up {
    opacity: 0;
    transform: translateY(30px);
}

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

.slide-in-top {
    opacity: 0;
    transform: translateY(-30px);
}

.slide-in-top.animated {
    animation: slideInTop 0.8s ease forwards;
}

/* 延迟动画 */
.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}

/* 滚动触发动画 */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate].animate {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
.loading {
    animation: spin 1s linear infinite;
}

/* 悬停效果 */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}