/* ========================================
   🎨 动力学系统分析器 - 动画特效系统
   ========================================
   包含所有推荐的动态特效实现
   ======================================== */

/* ========== 1. 粒子背景容器 ========== */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.6;
}

/* ========== 2. 卡片3D倾斜效果 ========== */
.card-3d-tilt {
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1),
                box-shadow 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    transform-style: preserve-3d;
    will-change: transform;
}

.card-3d-tilt:hover {
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.35);
}

/* 3D倾斜光泽效果 */
.card-3d-tilt::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: inherit;
}

.card-3d-tilt:hover::after {
    opacity: 1;
}

/* ========== 3. 按钮波纹点击效果 ========== */
.btn-ripple {
    position: relative;
    overflow: hidden;
    transform: translate3d(0, 0, 0);
}

.btn-ripple::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-ripple:active::before {
    width: 300px;
    height: 300px;
    transition: width 0s, height 0s;
}

/* 波纹动画 */
@keyframes ripple-animation {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(4);
        opacity: 0;
    }
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    pointer-events: none;
    animation: ripple-animation 0.6s ease-out;
}

/* ========== 4. 骨架屏加载动画 ========== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--muted) 0%,
        var(--accent) 50%,
        var(--muted) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 8px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 骨架屏卡片 */
.skeleton-card {
    padding: 20px;
    background: var(--card);
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.skeleton-line {
    height: 16px;
    margin-bottom: 12px;
}

.skeleton-line:last-child {
    width: 60%;
}

.skeleton-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

/* ========== 5. 按钮悬停渐变移动 ========== */
.btn-gradient-shift {
    background: linear-gradient(
        135deg,
        var(--primary) 0%,
        #5a7ae8 50%,
        var(--primary) 100%
    );
    background-size: 200% 200%;
    transition: background-position 0.5s ease, transform 0.3s ease;
}

.btn-gradient-shift:hover {
    background-position: 100% 0;
    transform: translateY(-2px);
}

/* ========== 6. 脉冲呼吸效果 ========== */
@keyframes pulse-breath {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
    }
}

.btn-pulse {
    animation: pulse-breath 2s ease-in-out infinite;
}

/* ========== 7. 数值滚动计数动画 ========== */
.counter-animate {
    display: inline-block;
    transition: all 0.3s ease;
}

/* ========== 8. 图表路径描绘动画 ========== */
@keyframes draw-path {
    0% {
        stroke-dashoffset: 1000;
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        stroke-dashoffset: 0;
        opacity: 1;
    }
}

.path-animate {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: draw-path 2s ease-out forwards;
}

/* ========== 9. 轨迹粒子流动效果 ========== */
@keyframes particle-flow {
    0% {
        transform: translateX(0) translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateX(100px) translateY(100px);
        opacity: 0;
    }
}

.trajectory-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, var(--primary), transparent);
    border-radius: 50%;
    animation: particle-flow 3s linear infinite;
}

/* ========== 10. 输入框焦点光晕动画 ========== */
.input-glow {
    position: relative;
    transition: all 0.3s ease;
}

.input-glow:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
    transform: translateY(-1px);
}

/* 光晕扩散效果 */
@keyframes glow-pulse {
    0%, 100% {
        box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.6);
    }
}

.input-glow:focus {
    animation: glow-pulse 2s ease-in-out infinite;
}

/* ========== 11. 侧边栏滑动动画 ========== */
@keyframes slide-in-left {
    0% {
        transform: translateX(-100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slide-out-left {
    0% {
        transform: translateX(0);
        opacity: 1;
    }
    100% {
        transform: translateX(-100%);
        opacity: 0;
    }
}

.sidebar-animate-in {
    animation: slide-in-left 0.4s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.sidebar-animate-out {
    animation: slide-out-left 0.3s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

/* ========== 12. 标签页切换滑动指示器 ========== */
.tab-indicator {
    position: absolute;
    bottom: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #5a7ae8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px 2px 0 0;
}

/* ========== 13. 卡片翻转动画 ========== */
.card-flip-container {
    perspective: 1000px;
}

.card-flip {
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-flip.flipped {
    transform: rotateY(180deg);
}

.card-flip-front,
.card-flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: inherit;
}

.card-flip-back {
    transform: rotateY(180deg);
}

/* ========== 14. 悬停发光边框效果 ========== */
@keyframes glow-border {
    0%, 100% {
        box-shadow: 0 0 5px rgba(102, 126, 234, 0.5),
                    0 0 10px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.8),
                    0 0 30px rgba(102, 126, 234, 0.5);
    }
}

.glow-border-active {
    animation: glow-border 2s ease-in-out infinite;
}

/* ========== 15. 主题切换颜色过渡 ========== */
body {
    transition: background-color 0.5s ease, color 0.5s ease;
}

.theme-transition * {
    transition: background-color 0.3s ease,
                color 0.3s ease,
                border-color 0.3s ease,
                box-shadow 0.3s ease !important;
}

/* 主题切换波纹扩散 */
@keyframes theme-ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(50);
        opacity: 0;
    }
}

.theme-ripple-effect {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    animation: theme-ripple 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 16. 图标变形动画 ========== */
.icon-morph {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-morph.rotate {
    transform: rotate(360deg);
}

.icon-morph.scale {
    transform: scale(1.2);
}

/* 太阳/月亮图标切换 */
@keyframes sun-to-moon {
    0% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(180deg) scale(0.8);
    }
    100% {
        transform: rotate(360deg) scale(1);
    }
}

.theme-icon-animate {
    animation: sun-to-moon 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 17. 手风琴展开效果 ========== */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease,
                padding 0.3s ease;
    opacity: 0;
}

.accordion-content.expanded {
    max-height: 2000px;
    opacity: 1;
    padding: 20px 0;
}

/* ========== 18. 公式渐现动画 ========== */
@keyframes formula-fade-in {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.formula-animate {
    opacity: 0;
    animation: formula-fade-in 0.6s ease-out forwards;
}

.formula-animate:nth-child(1) { animation-delay: 0.1s; }
.formula-animate:nth-child(2) { animation-delay: 0.2s; }
.formula-animate:nth-child(3) { animation-delay: 0.3s; }
.formula-animate:nth-child(4) { animation-delay: 0.4s; }

/* ========== 19. 时间轴动画 ========== */
.timeline-item {
    opacity: 0;
    transform: translateX(-30px);
    animation: timeline-slide-in 0.6s ease-out forwards;
}

@keyframes timeline-slide-in {
    0% {
        opacity: 0;
        transform: translateX(-30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

/* ========== 20. 工具提示动画 ========== */
.tooltip-animate {
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

.tooltip-animate.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ========== 21. 滚动视差效果 ========== */
.parallax-bg {
    transition: transform 0.3s ease-out;
    will-change: transform;
}

/* ========== 22. 页面入场动画 ========== */
@keyframes page-fade-in {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-animate-in {
    animation: page-fade-in 0.6s ease-out;
}

/* ========== 23. 加载旋转Spinner ========== */
@keyframes spinner-rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spinner-rotate 0.8s linear infinite;
}

/* ========== 24. 滑块轨迹彩色渐变 ========== */
.slider-gradient {
    position: relative;
}

.slider-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
    border-radius: inherit;
    transition: width 0.3s ease;
    pointer-events: none;
}

/* ========== 25. 复选框勾选动画 ========== */
@keyframes checkbox-check {
    0% {
        stroke-dashoffset: 20;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

.checkbox-checkmark {
    stroke-dasharray: 20;
    stroke-dashoffset: 20;
    transition: stroke-dashoffset 0.3s ease;
}

.checkbox-checked .checkbox-checkmark {
    animation: checkbox-check 0.3s ease forwards;
}

/* ========== 26. 代码打字机效果 ========== */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.typewriter-text {
    overflow: hidden;
    border-right: 2px solid var(--primary);
    white-space: nowrap;
    animation: typing 3s steps(40, end),
               blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--primary);
    }
}

/* ========== 27. 卡片悬停放大动画 ========== */
.card-hover-scale {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover-scale:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/* ========== 28. 面包屑动画 ========== */
.breadcrumb-item {
    opacity: 0;
    transform: translateX(-10px);
    animation: breadcrumb-slide 0.4s ease-out forwards;
}

@keyframes breadcrumb-slide {
    0% {
        opacity: 0;
        transform: translateX(-10px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.breadcrumb-item:nth-child(1) { animation-delay: 0.05s; }
.breadcrumb-item:nth-child(2) { animation-delay: 0.1s; }
.breadcrumb-item:nth-child(3) { animation-delay: 0.15s; }

/* ========== 29. 进度条流动动画 ========== */
@keyframes progress-flow {
    0% {
        background-position: 0% 0%;
    }
    100% {
        background-position: 100% 0%;
    }
}

.progress-bar-animated {
    background: linear-gradient(
        90deg,
        var(--primary) 0%,
        #5a7ae8 50%,
        var(--primary) 100%
    );
    background-size: 200% 100%;
    animation: progress-flow 1.5s linear infinite;
}

/* ========== 30. 微交互按钮按压效果 ========== */
.btn-press:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
}

/* ========== 响应式优化 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========== 性能优化 ========== */
.gpu-accelerate {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* ========== 组合类 ========== */
.animate-all {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in {
    animation: fade-in 0.5s ease-out;
}

@keyframes fade-in {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.slide-up {
    animation: slide-up 0.5s ease-out;
}

@keyframes slide-up {
    0% {
        transform: translateY(20px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========== 特殊科学主题动画 ========== */
/* 分子振动效果 */
@keyframes molecule-vibrate {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(2px, 2px) rotate(1deg);
    }
    50% {
        transform: translate(0, 4px) rotate(0deg);
    }
    75% {
        transform: translate(-2px, 2px) rotate(-1deg);
    }
}

.molecule-vibrate {
    animation: molecule-vibrate 2s ease-in-out infinite;
}

/* 轨道运动效果 */
@keyframes orbit {
    0% {
        transform: rotate(0deg) translateX(50px) rotate(0deg);
    }
    100% {
        transform: rotate(360deg) translateX(50px) rotate(-360deg);
    }
}

.orbit-animation {
    animation: orbit 10s linear infinite;
}