/* 初始状态 - 元素隐藏 */
.animation-hidden {
    opacity: 0;
    transform: translateY(50px);
}

/* 动画定义 */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes zoomIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes flipIn {
    from {
        transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }

    to {
        transform: perspective(400px) rotateY(0);
        opacity: 1;
    }
}

@keyframes rotateIn {
    from {
        transform: rotate(-180deg) scale(0.5);
        opacity: 0;
    }

    to {
        transform: rotate(0) scale(1);
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

/* 动画类 - 当元素进入视口时添加 */
.animate-fadeInUp {
    animation: fadeInUp 1s ease forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 1s ease forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 1s ease forwards;
}

.animate-zoomIn {
    animation: zoomIn 1s ease forwards;
}

.animate-bounceIn {
    animation: bounceIn 1s ease forwards;
}

.animate-flipIn {
    animation: flipIn 1s ease forwards;
}

.animate-rotateIn {
    animation: rotateIn 1s ease forwards;
}

.animate-slideInUp {
    animation: slideInUp 1s ease forwards;
}

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