/* 淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 向上滑入动画 */
@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 缩放动画 */
@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* 应用动画的类 */
.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.slide-up {
    animation: slideUp 0.6s ease forwards;
}

.scale-in {
    animation: scaleIn 0.6s ease forwards;
}

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

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

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

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

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

/* 加载动画 */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.loading {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

/* 滚动指示器动画 */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    cursor: pointer;
}

.scroll-indicator::before {
    content: "↓";
    font-size: 2rem;
    color: white;
}

/* 视差滚动效果 */
.parallax-section {
    transform: translateZ(0);
    will-change: transform;
}

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

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

/* 页面切换动画 */
@keyframes pageTransition {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-transition {
    animation: pageTransition 0.5s ease-out forwards;
}

/* 响应式动画调整 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* 基础动画关键帧 */
@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

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

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

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

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes zoomOut {
    from {
        transform: scale(1.2);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* 方向性淡入动画 */
.fade-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease-out;
}

.fade-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease-out;
}

.fade-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease-out;
}

.fade-down {
    opacity: 0;
    transform: translateY(-50px);
    transition: all 0.6s ease-out;
}

.fade-left-active {
    opacity: 1;
    transform: translateX(0);
}

.fade-right-active {
    opacity: 1;
    transform: translateX(0);
}

.fade-up-active {
    opacity: 1;
    transform: translateY(0);
}

.fade-down-active {
    opacity: 1;
    transform: translateY(0);
}

/* 缩放动画 */
.zoom-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s ease-out;
}

.zoom-in-active {
    opacity: 1;
    transform: scale(1);
}

/* 滑动动画 */
.slide-up-active {
    opacity: 1;
    transform: translateY(0);
}

/* 3D倾斜效果 */
.tilt-effect {
    transition: transform 0.3s ease-out;
    transform-style: preserve-3d;
    will-change: transform;
}

/* 内容层叠效果 */
.stacking-section {
    position: relative;
    overflow: hidden;
}

.stack-element {
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(to right, #4CAF50, #8BC34A);
    z-index: 1000;
    transition: width 0.1s ease-out;
}

/* 部分指示器 */
.section-indicator {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.section-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.section-dot:hover {
    background-color: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.section-dot.active {
    background-color: #fff;
    transform: scale(1.2);
}

/* 视差滚动效果 */
.parallax-section {
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.parallax-element {
    will-change: transform;
    transition: transform 0.1s ease-out;
}

/* 内容区域过渡效果 */
.content-section {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .section-indicator {
        right: 10px;
    }
    
    .section-dot {
        width: 8px;
        height: 8px;
    }
    
    .scroll-reveal {
        transition: all 0.4s ease-out;
    }
}

/* 社交媒体内容动画 */
.social-post {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease-out;
}

.social-post.visible {
    opacity: 1;
    transform: translateY(0);
}

.social-article {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease-out;
}

.social-article.visible {
    opacity: 1;
    transform: translateX(0);
}

/* 分享按钮动画 */
.share-btn {
    position: relative;
    overflow: hidden;
}

.share-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.share-btn:hover::after {
    width: 200%;
    height: 200%;
}

/* 图表动画 */
.chart-container {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.6s ease-out;
}

.chart-container.visible {
    opacity: 1;
    transform: scale(1);
}

/* 地图容器动画 */
.map-container {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.map-container.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 引用框动画 */
.quote-box {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease-out;
}

.quote-box.visible {
    opacity: 1;
    transform: translateX(0);
}

/* 策略卡片动画 */
.strategy-card {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease-out;
}

.strategy-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 服务列表项动画 */
.service-list li {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease-out;
}

.service-list li.visible {
    opacity: 1;
    transform: translateX(0);
}

/* 延迟动画 */
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }