/* 动画关键帧 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 动画类 */
.animate__animated {
    animation-duration: 1s;
    animation-fill-mode: both;
}

.animate__fadeInUp {
    animation-name: fadeInUp;
}

.animate__fadeInDown {
    animation-name: fadeInDown;
}

.animate__fadeInRight {
    animation-name: fadeInRight;
}

/* 动画延迟 */
[data-delay="0.1s"] {
    animation-delay: 0.1s;
}

[data-delay="0.2s"] {
    animation-delay: 0.2s;
}

[data-delay="0.3s"] {
    animation-delay: 0.3s;
}

/* 滚动动画 */
.scroll-animation {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.scroll-animation.active {
    opacity: 1;
    transform: translateY(0);
}

/* 悬停动画 */
.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-shadow {
    transition: box-shadow 0.3s ease;
}

.hover-shadow:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 加载动画 */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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