/* ========================================
   Animations CSS - 页面动画效果
   ======================================== */

/* ========================================
   1. 基础动画变量
   ======================================== */
:root {
    --animation-duration-fast: 0.2s;
    --animation-duration-normal: 0.4s;
    --animation-duration-slow: 0.6s;
    --animation-duration-slower: 0.8s;
    --animation-easing: cubic-bezier(0.4, 0, 0.2, 1);
    --animation-easing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --animation-easing-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ========================================
   2. 滚动触发入场动画
   ======================================== */

/* 基础淡入 */
.animate-fade-in {
    opacity: 0;
    transition: opacity var(--animation-duration-normal) var(--animation-easing);
}

.animate-fade-in.animated {
    opacity: 1;
}

/* 从下方淡入 */
.animate-fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--animation-duration-normal) var(--animation-easing),
        transform var(--animation-duration-normal) var(--animation-easing);
}

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

/* 从左侧淡入 */
.animate-fade-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity var(--animation-duration-normal) var(--animation-easing),
        transform var(--animation-duration-normal) var(--animation-easing);
}

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

/* 从右侧淡入 */
.animate-fade-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity var(--animation-duration-normal) var(--animation-easing),
        transform var(--animation-duration-normal) var(--animation-easing);
}

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

/* 缩放淡入 */
.animate-scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity var(--animation-duration-normal) var(--animation-easing),
        transform var(--animation-duration-normal) var(--animation-easing-bounce);
}

.animate-scale-in.animated {
    opacity: 1;
    transform: scale(1);
}

/* 模糊淡入 */
.animate-blur-in {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(20px);
    transition: opacity var(--animation-duration-slow) var(--animation-easing),
        filter var(--animation-duration-slow) var(--animation-easing),
        transform var(--animation-duration-slow) var(--animation-easing);
}

.animate-blur-in.animated {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

/* ========================================
   3. 交错动画（Stagger Animation）
   ======================================== */
.stagger-children>* {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--animation-duration-normal) var(--animation-easing),
        transform var(--animation-duration-normal) var(--animation-easing);
}

.stagger-children.animated>*:nth-child(1) {
    transition-delay: 0.05s;
}

.stagger-children.animated>*:nth-child(2) {
    transition-delay: 0.1s;
}

.stagger-children.animated>*:nth-child(3) {
    transition-delay: 0.15s;
}

.stagger-children.animated>*:nth-child(4) {
    transition-delay: 0.2s;
}

.stagger-children.animated>*:nth-child(5) {
    transition-delay: 0.25s;
}

.stagger-children.animated>*:nth-child(6) {
    transition-delay: 0.3s;
}

.stagger-children.animated>*:nth-child(7) {
    transition-delay: 0.35s;
}

.stagger-children.animated>*:nth-child(8) {
    transition-delay: 0.4s;
}

.stagger-children.animated>*:nth-child(9) {
    transition-delay: 0.45s;
}

.stagger-children.animated>*:nth-child(10) {
    transition-delay: 0.5s;
}

.stagger-children.animated>*:nth-child(11) {
    transition-delay: 0.55s;
}

.stagger-children.animated>*:nth-child(12) {
    transition-delay: 0.6s;
}

.stagger-children.animated>*:nth-child(13) {
    transition-delay: 0.65s;
}

.stagger-children.animated>*:nth-child(14) {
    transition-delay: 0.7s;
}

.stagger-children.animated>* {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   4. 卡片悬停动画增强
   ======================================== */

/* 3D卡片悬停效果 */
.card-3d-hover {
    transition: transform var(--animation-duration-normal) var(--animation-easing),
        box-shadow var(--animation-duration-normal) var(--animation-easing);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d-hover:hover {
    transform: translateY(-8px) rotateX(2deg);
}

/* 发光卡片效果 */
.card-glow-hover {
    position: relative;
    transition: transform var(--animation-duration-normal) var(--animation-easing);
}

.card-glow-hover::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg,
            rgba(99, 102, 241, 0) 0%,
            rgba(99, 102, 241, 0.3) 50%,
            rgba(99, 102, 241, 0) 100%);
    border-radius: inherit;
    opacity: 0;
    z-index: -1;
    transition: opacity var(--animation-duration-normal) var(--animation-easing);
}

.card-glow-hover:hover::before {
    opacity: 1;
}

.card-glow-hover:hover {
    transform: translateY(-6px);
}

/* 综合卡片动画效果 */
.comprehensive-card {
    position: relative;
    overflow: hidden;
}

.comprehensive-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    transition: left var(--animation-duration-slow) var(--animation-easing);
}

.comprehensive-card:hover::after {
    left: 100%;
}

/* ========================================
   5. 按钮动画增强
   ======================================== */

/* 按钮涟漪效果 */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s var(--animation-easing),
        height 0.5s var(--animation-easing),
        opacity 0.5s var(--animation-easing);
    opacity: 0;
}

.btn:active::after {
    width: 300px;
    height: 300px;
    opacity: 0;
}

/* 按钮悬停发光效果 */
.btn-primary {
    transition: all var(--animation-duration-normal) var(--animation-easing);
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(1, 89, 189, 0.4),
        0 0 40px rgba(1, 89, 189, 0.2);
}

/* 按钮按下效果 */
.btn:active {
    transform: scale(0.98) translateY(0);
}

/* 次要按钮动画 */
.btn-secondary {
    position: relative;
    z-index: 1;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-primary);
    border-radius: inherit;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--animation-duration-normal) var(--animation-easing);
    z-index: -1;
}

.btn-secondary:hover::before {
    transform: scaleX(1);
}

.btn-secondary:hover {
    color: #ffffff;
    border-color: var(--color-primary);
}

/* ========================================
   6. 导航链接动画增强
   ======================================== */

/* Header 容器预设高度，防止加载时布局跳动 */
#header-container {
    min-height: var(--header-height, 80px);
}

/* Header 入场动画 */
.site-header {
    animation: headerFadeIn 0.3s ease-out;
    transition: background var(--animation-duration-normal) var(--animation-easing),
        box-shadow var(--animation-duration-normal) var(--animation-easing),
        backdrop-filter var(--animation-duration-normal) var(--animation-easing);
}

@keyframes headerFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* 导航列表平滑过渡 */
.nav-list {
    opacity: 1;
    transition: opacity 0.2s ease;
}

/* Header滚动时的动画 */
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* ========================================
   7. 图片加载动画
   ======================================== */

/* 图片淡入加载 */
.img-lazy-load {
    opacity: 0;
    transition: opacity var(--animation-duration-slow) var(--animation-easing);
}

.img-lazy-load.loaded {
    opacity: 1;
}

/* 图片悬停缩放效果 */
.img-zoom-hover {
    overflow: hidden;
}

.img-zoom-hover img {
    transition: transform var(--animation-duration-slow) var(--animation-easing);
}

.img-zoom-hover:hover img {
    transform: scale(1.08);
}

/* ========================================
   8. 表单输入动画
   ======================================== */

/* 输入框聚焦动画 */
.form-group input,
.form-group textarea,
.register-modal-input,
.register-modal-textarea {
    transition: border-color var(--animation-duration-fast) var(--animation-easing),
        box-shadow var(--animation-duration-fast) var(--animation-easing),
        transform var(--animation-duration-fast) var(--animation-easing);
}

.form-group input:focus,
.form-group textarea:focus,
.register-modal-input:focus,
.register-modal-textarea:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(1, 89, 189, 0.15);
}

/* 标签动画 */
.form-group label,
.register-modal-label {
    transition: color var(--animation-duration-fast) var(--animation-easing);
}

.form-group:focus-within label,
.register-modal-form-group:focus-within .register-modal-label {
    color: var(--color-primary);
}

/* ========================================
   9. 品牌Logo网格动画
   ======================================== */

/* Logo悬停放大效果 */
.company-logo {
    transition: transform var(--animation-duration-normal) var(--animation-easing),
        border-color var(--animation-duration-normal) var(--animation-easing),
        box-shadow var(--animation-duration-normal) var(--animation-easing);
}

.company-logo:hover {
    transform: scale(1.05);
    border-color: var(--color-primary);
    box-shadow: 0 8px 25px rgba(1, 89, 189, 0.15);
}

.company-logo img {
    transition: filter var(--animation-duration-normal) var(--animation-easing);
}

.company-logo:hover img {
    filter: none;
}

/* ========================================
   10. 新闻卡片动画增强
   ======================================== */

/* 新闻卡片悬停效果 */
.news-card {
    transition: transform var(--animation-duration-normal) var(--animation-easing),
        box-shadow var(--animation-duration-normal) var(--animation-easing),
        border-color var(--animation-duration-normal) var(--animation-easing);
}

.news-card:hover {
    transform: translateY(-8px) scale(1.02);
}

/* 引号图标动画 */
.news-card .quote-icon {
    transition: transform var(--animation-duration-normal) var(--animation-easing),
        color var(--animation-duration-normal) var(--animation-easing);
}

.news-card:hover .quote-icon {
    transform: scale(1.1);
    color: var(--color-primary);
}

/* 阅读更多链接动画 */
.news-link {
    position: relative;
}

.news-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--animation-duration-normal) var(--animation-easing);
}

.news-card:hover .news-link::after {
    width: 100%;
}

/* ========================================
   11. 弹窗动画增强
   ======================================== */

/* 弹窗遮罩淡入 */
.register-modal-overlay {
    opacity: 0;
    transition: opacity var(--animation-duration-normal) var(--animation-easing);
}

.register-modal.active .register-modal-overlay {
    opacity: 1;
}

/* 弹窗内容滑入 */
.register-modal-content {
    opacity: 0;
    transform: translateY(-30px) scale(0.95);
    transition: opacity var(--animation-duration-normal) var(--animation-easing),
        transform var(--animation-duration-normal) var(--animation-easing-bounce);
}

.register-modal.active .register-modal-content {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* 成功图标动画 */
.register-modal-success .success-icon {
    animation: successPop 0.5s var(--animation-easing-bounce);
}

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

    50% {
        transform: scale(1.2);
    }

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

/* ========================================
   12. Section标题动画
   ======================================== */

.section-title {
    position: relative;
}

.section-title.animate-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: 2px;
    transition: width var(--animation-duration-slow) var(--animation-easing),
        left var(--animation-duration-slow) var(--animation-easing);
}

.section-title.animate-title.animated::after {
    width: 60px;
    left: calc(50% - 30px);
}

/* ========================================
   13. 滚动进度指示器
   ======================================== */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ========================================
   14. 页面加载动画
   ======================================== */

/* 页面初始加载遮罩 */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s var(--animation-easing),
        visibility 0.5s var(--animation-easing);
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.page-loader .loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   15. 浮动元素动画
   ======================================== */

/* 轻微浮动效果 */
.float-animation {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

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

    50% {
        transform: translateY(-10px);
    }
}

/* 脉冲效果 */
.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.02);
    }
}

/* ========================================
   16. 文字动画效果
   ======================================== */

/* 文字逐字显示效果的容器 */
.text-reveal {
    overflow: hidden;
}

.text-reveal span {
    display: inline-block;
    transform: translateY(100%);
    transition: transform var(--animation-duration-normal) var(--animation-easing);
}

.text-reveal.animated span {
    transform: translateY(0);
}

/* 文字高亮动画 */
.text-highlight {
    background: linear-gradient(120deg,
            transparent 0%,
            transparent 50%,
            rgba(1, 89, 189, 0.1) 50%,
            rgba(1, 89, 189, 0.1) 100%);
    background-size: 200% 100%;
    background-position: 100% 0;
    transition: background-position var(--animation-duration-slow) var(--animation-easing);
}

.text-highlight:hover,
.text-highlight.animated {
    background-position: 0 0;
}

/* ========================================
   17. 社交链接动画
   ======================================== */

.social-link {
    transition: transform var(--animation-duration-normal) var(--animation-easing),
        background var(--animation-duration-normal) var(--animation-easing);
}

.social-link:hover {
    transform: translateY(-4px) scale(1.1);
}

/* ========================================
   18. Feature Tab 动画增强
   ======================================== */

.feature-tab {
    position: relative;
    overflow: hidden;
}

.feature-tab::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    transform: scaleY(0);
    transition: transform var(--animation-duration-normal) var(--animation-easing);
}

.feature-tab:hover::before {
    transform: scaleY(0.5);
}

.feature-tab.active::before {
    transform: scaleY(1);
}

/* Tab图标旋转效果 */
.feature-tab-icon {
    transition: transform var(--animation-duration-normal) var(--animation-easing);
}

.feature-tab:hover .feature-tab-icon {
    transform: scale(1.1);
}

.feature-tab.active .feature-tab-icon {
    transform: scale(1.15);
}

/* ========================================
   19. Footer动画
   ======================================== */

.footer-section ul li {
    transition: transform var(--animation-duration-fast) var(--animation-easing);
}

.footer-section ul li:hover {
    transform: translateX(5px);
}

.footer-section ul li a::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    margin-right: 0;
    transition: width var(--animation-duration-normal) var(--animation-easing),
        margin-right var(--animation-duration-normal) var(--animation-easing);
}

.footer-section ul li a:hover::before {
    width: 10px;
    margin-right: 8px;
}

/* ========================================
   20. 回到顶部小火箭按钮
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: 85px;
    right: 60px;
    width: 56px;
    height: 56px;
    background: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset,
        0 1px 0 rgba(255, 255, 255, 0.1) inset;
    overflow: visible;
}

/* 外发光效果 */
.back-to-top::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg,
            rgba(59, 130, 246, 0.5) 0%,
            rgba(147, 51, 234, 0.5) 50%,
            rgba(236, 72, 153, 0.5) 100%);
    border-radius: 18px;
    opacity: 0;
    z-index: -1;
    filter: blur(12px);
    transition: opacity 0.4s ease;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.back-to-top:hover {
    transform: translateY(-6px) scale(1.05);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset,
        0 1px 0 rgba(255, 255, 255, 0.15) inset;
}

.back-to-top:hover::before {
    opacity: 1;
}

.back-to-top:active {
    transform: translateY(-2px) scale(1.02);
}

/* 火箭容器 */
.back-to-top .rocket-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.back-to-top:hover .rocket-wrapper {
    transform: translateY(-4px);
}

/* 小火箭图标 - 更精致的设计 */
.back-to-top .rocket-icon {
    width: 26px;
    height: 26px;
    transition: all 0.3s var(--animation-easing);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.back-to-top:hover .rocket-icon {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4));
}

/* 火焰效果容器 */
.back-to-top .flame-container {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: all 0.3s ease;
}

.back-to-top:hover .flame-container {
    opacity: 1;
    bottom: -14px;
}

/* 火焰粒子 */
.back-to-top .flame {
    width: 6px;
    height: 12px;
    background: linear-gradient(to bottom,
            #fff 0%,
            #fbbf24 20%,
            #f97316 50%,
            #ef4444 80%,
            transparent 100%);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    animation: flameFlicker 0.15s ease-in-out infinite alternate;
}

.back-to-top .flame:nth-child(1) {
    height: 16px;
    animation-delay: 0s;
}

.back-to-top .flame:nth-child(2) {
    height: 20px;
    width: 8px;
    animation-delay: 0.05s;
}

.back-to-top .flame:nth-child(3) {
    height: 16px;
    animation-delay: 0.1s;
}

@keyframes flameFlicker {
    0% {
        transform: scaleY(0.9) scaleX(0.95);
        opacity: 0.8;
    }

    100% {
        transform: scaleY(1.1) scaleX(1.05);
        opacity: 1;
    }
}

/* 星星/粒子轨迹效果 */
.back-to-top .star-trail {
    position: absolute;
    width: 3px;
    height: 3px;
    background: #fff;
    border-radius: 50%;
    opacity: 0;
    transition: all 0.3s ease;
}

.back-to-top .star-trail:nth-child(1) {
    bottom: -20px;
    left: 8px;
    animation-delay: 0s;
}

.back-to-top .star-trail:nth-child(2) {
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0.1s;
}

.back-to-top .star-trail:nth-child(3) {
    bottom: -22px;
    right: 8px;
    animation-delay: 0.2s;
}

.back-to-top:hover .star-trail {
    opacity: 1;
    animation: starFall 0.8s ease-out infinite;
}

@keyframes starFall {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }

    100% {
        transform: translateY(30px) scale(0);
        opacity: 0;
    }
}

/* 悬停时的光环波纹效果 */
.back-to-top .ripple-ring {
    position: absolute;
    inset: 0;
    border: 2px solid rgba(59, 130, 246, 0.5);
    border-radius: 16px;
    opacity: 0;
    transform: scale(1);
}

.back-to-top:hover .ripple-ring {
    animation: rippleExpand 1.5s ease-out infinite;
}

@keyframes rippleExpand {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        border-radius: 14px;
    }

    .back-to-top::before {
        border-radius: 16px;
    }

    .back-to-top .rocket-icon {
        width: 22px;
        height: 22px;
    }

    .back-to-top .ripple-ring {
        border-radius: 14px;
    }
}

/* ========================================
   21. 响应式动画调整
   ======================================== */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 移动端减少复杂动画 */
@media (max-width: 768px) {
    .card-3d-hover:hover {
        transform: translateY(-4px);
    }

    .animate-fade-up,
    .animate-fade-left,
    .animate-fade-right {
        transform: translateY(20px);
    }

    .stagger-children>* {
        transform: translateY(15px);
    }
}