/* 关键帧 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

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

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

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-animate.show {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s;
}

.loader.hide {
    opacity: 0;
    pointer-events: none;
}

.loader-content {
    text-align: center;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(126, 91, 239, 0.2);
    border-top: 4px solid var(--primary-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loader-text {
    color: var(--primary-purple);
    font-size: 1.2rem;
    font-weight: 500;
}

/* 按钮进入动画 */
.btn-main {
    animation: fadeInUp 1s ease-out 0.3s both;
}

.btn-secondary {
    animation: fadeInUp 1s ease-out 0.5s both;
}

.btn-accent {
    animation: fadeInUp 1s ease-out 0.7s both;
}