/* 动画效果 */
@keyframes slideInFromLeft {
    0% {
        transform: translateX(-100px);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInFromRight {
    0% {
        transform: translateX(100px);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    0% {
        transform: translateY(30px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* 应用动画 */
.hero-content {
    animation: slideInFromLeft 0.8s ease-out;
}

.hero-image img {
    animation: slideInFromRight 0.8s ease-out;
}

.feature-card, .security-item, .platform-slide, .faq-item {
    animation: fadeInUp 0.5s ease-out;
}

.section-title, .section-subtitle {
    animation: fadeIn 0.8s ease-out;
}

/* 滚动显示动画 */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 滑动效果 */
.slide-in {
    transition: transform 0.5s ease, opacity 0.5s ease;
}

/* 加载动画 */
.loading-spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid #4285f4;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* 按钮悬停效果 */
.btn-primary, .btn-secondary, .download-btn {
    position: relative;
    overflow: hidden;
}

.btn-primary:after, .btn-secondary:after, .download-btn:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn-primary:hover:after, .btn-secondary:hover:after, .download-btn:hover:after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(40, 40);
        opacity: 0;
    }
}