/* 丝滑交互优化 - 全面提升用户体验 */

/* ========== 基础优化 ========== */
* {
    /* 启用硬件加速 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    
    /* 优化文本渲染 */
    text-rendering: optimizeLegibility;
}

/* 所有可交互元素使用GPU加速 */
a, button, .character, .work-card-memphis, .contact-card-memphis, 
.skill-category, .comic-panel, .btn-memphis, .filter-tag {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 减少动画时的重绘 */
.animated {
    will-change: transform, opacity;
}

/* ========== 按钮丝滑交互 ========== */
.btn-memphis {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform: translateZ(0);
}

/* 按钮光泽效果 */
.btn-memphis::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    transition: left 0.6s ease;
}

.btn-memphis:hover::before {
    left: 100%;
}

.btn-memphis:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 8px 8px 0 var(--black);
}

.btn-memphis:active {
    transform: translateY(-2px) scale(0.98);
    transition-duration: 0.1s;
}

/* 按钮图标动画 */
.btn-memphis span:first-child {
    display: inline-block;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-memphis:hover span:first-child {
    transform: scale(1.2) rotate(-10deg);
}

/* ========== 导航链接丝滑效果 ========== */
.nav-links a {
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 4px;
    background: var(--orange);
    border-radius: 2px;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--purple);
    transform: translateY(-2px);
}

/* ========== 卡片丝滑交互 ========== */
.work-card-memphis {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-style: preserve-3d;
}

.work-card-memphis:hover {
    transform: translateY(-12px) rotateX(5deg) rotateY(-2deg);
    box-shadow: 
        16px 16px 0 var(--black),
        0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 卡片图片缩放 */
.work-image-wrapper {
    overflow: hidden;
}

.work-image {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.work-card-memphis:hover .work-image {
    transform: scale(1.15);
}

/* 角色探头丝滑动画 */
.character-peek {
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.work-card-memphis:hover .character-peek {
    bottom: 20px;
    animation: peekBounce 0.6s ease-out;
}

@keyframes peekBounce {
    0% { transform: translateY(20px); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(5px); }
    100% { transform: translateY(0); }
}

/* 卡片内容区动画 */
.work-content {
    transition: transform 0.4s ease;
}

.work-card-memphis:hover .work-content {
    transform: translateY(-5px);
}

/* ========== 联系卡片优化 ========== */
.contact-card-memphis {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.contact-card-memphis:hover {
    transform: translateY(-10px) rotate(-2deg) scale(1.02);
}

.contact-card-memphis .card-character {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.contact-card-memphis:hover .card-character {
    transform: scale(1.1) translateY(-5px);
}

/* ========== 技能卡片优化 ========== */
.skill-category {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.skill-category:hover {
    transform: translateY(-8px);
    box-shadow: 12px 12px 0 var(--black);
}

/* 技能形状悬停动画 */
.skill-shapes > div {
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
}

.skill-shapes > div:hover {
    transform: scale(1.4) rotate(15deg);
}

.skill-shapes > div.filled:hover {
    filter: brightness(1.2);
}

/* ========== 漫画面板优化 ========== */
.panel-frame {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.panel-frame:hover {
    transform: translateY(-8px) rotate(-1deg);
    box-shadow: 16px 16px 0 var(--black);
}

.panel-frame:hover .character-scene {
    animation: characterPop 0.5s ease-out;
}

@keyframes characterPop {
    0% { transform: scale(0.65); }
    50% { transform: scale(0.75) rotate(-5deg); }
    100% { transform: scale(0.7) rotate(0deg); }
}

/* 对话气泡动画 */
.speech-bubble {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.panel-frame:hover .speech-bubble {
    transform: scale(1.05);
    box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.15);
}

/* ========== 角色通用优化 ========== */
.character {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.character:hover {
    transform: scale(1.2) rotate(-8deg);
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

/* 角色部件动画 */
.character .eye,
.character .mouth,
.character .blush {
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 问号气泡优化 */
.question-bubble {
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.character-purple:hover .question-bubble {
    animation: bubbleWiggle 0.6s ease-out;
}

@keyframes bubbleWiggle {
    0% { transform: scale(0) rotate(-20deg); }
    50% { transform: scale(1.1) rotate(5deg); }
    100% { transform: scale(1) rotate(0deg); }
}

/* 爱心动画优化 */
.hearts::before,
.hearts::after {
    transition: all 0.4s ease;
}

.character-orange:hover .hearts::before {
    animation: heartFloat1 1.2s ease-in-out infinite;
}

.character-orange:hover .hearts::after {
    animation: heartFloat2 1.2s ease-in-out infinite 0.3s;
}

@keyframes heartFloat1 {
    0%, 100% { transform: translateY(0) rotate(-10deg) scale(1); opacity: 1; }
    50% { transform: translateY(-20px) rotate(10deg) scale(1.3); opacity: 0.8; }
}

@keyframes heartFloat2 {
    0%, 100% { transform: translateY(0) rotate(10deg) scale(1); opacity: 0.8; }
    50% { transform: translateY(-15px) rotate(-10deg) scale(1.2); opacity: 1; }
}

/* 音符动画优化 */
.music-notes::before,
.music-notes::after {
    transition: all 0.4s ease;
}

/* 晕圈动画优化 */
.dizzy::before {
    animation: spinStar 0.8s linear infinite;
}

/* ========== 表单输入优化 ========== */
.form-group-memphis input,
.form-group-memphis textarea {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 3px solid var(--border-color);
}

.form-group-memphis input:focus,
.form-group-memphis textarea:focus {
    border-color: var(--purple);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.15);
    transform: translateY(-2px);
}

.form-group-memphis label {
    transition: all 0.3s ease;
}

.form-group-memphis:focus-within label {
    color: var(--purple);
    transform: translateX(5px);
}

/* 提交按钮优化 */
.submit-btn-memphis {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.submit-btn-memphis::before {
    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 0.6s ease, height 0.6s ease;
}

.submit-btn-memphis:hover::before {
    width: 300px;
    height: 300px;
}

.submit-btn-memphis:hover {
    transform: translateY(-4px);
    box-shadow: 10px 10px 0 var(--black);
}

.submit-btn-memphis:active {
    transform: translateY(-2px) scale(0.98);
}

.submit-btn-memphis .btn-icon {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: inline-block;
}

.submit-btn-memphis:hover .btn-icon {
    transform: translateX(5px) rotate(-15deg) scale(1.2);
}

/* ========== 筛选标签优化 ========== */
.filter-tag {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.filter-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--purple);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.filter-tag:hover::before,
.filter-tag.active::before {
    transform: scaleX(1);
    transform-origin: left;
}

.filter-tag:hover {
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 4px 4px 0 var(--black);
}

.filter-tag.active {
    color: var(--white);
    box-shadow: 4px 4px 0 var(--black);
}

/* ========== 宣言卡片优化 ========== */
.manifesto-card {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.manifesto-card:hover {
    transform: rotate(0deg) translate(-10px, -10px);
    box-shadow: 20px 20px 0 var(--black);
}

.manifesto-text {
    transition: opacity 0.3s ease;
}

.manifesto-card:hover .manifesto-text {
    opacity: 0.9;
}

/* ========== 滚动显示动画优化 ========== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

/* 错开动画延迟 */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

/* ========== 加载动画优化 ========== */
.loading-memphis .character {
    animation: loadingBounce 0.6s ease-in-out infinite;
}

.loading-memphis .character:nth-child(2) {
    animation-delay: 0.1s;
}

.loading-memphis .character:nth-child(3) {
    animation-delay: 0.2s;
}

.loading-memphis .character:nth-child(4) {
    animation-delay: 0.3s;
}

@keyframes loadingBounce {
    0%, 100% { transform: scale(0.8) translateY(0); }
    50% { transform: scale(0.8) translateY(-20px); }
}

/* ========== Toast通知优化 ========== */
.toast {
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast.show {
    animation: toastSlide 0.5s ease-out;
}

@keyframes toastSlide {
    0% { transform: translateX(150%) rotate(10deg); }
    70% { transform: translateX(-10%) rotate(-2deg); }
    100% { transform: translateX(0) rotate(0deg); }
}

/* ========== 响应式交互优化 ========== */
@media (hover: none) {
    /* 触摸设备禁用复杂悬停效果 */
    .btn-memphis:hover,
    .work-card-memphis:hover,
    .contact-card-memphis:hover,
    .skill-category:hover {
        transform: none;
        box-shadow: 4px 4px 0 var(--black);
    }
    
    .btn-memphis:active,
    .work-card-memphis:active,
    .contact-card-memphis:active,
    .skill-category:active {
        transform: scale(0.98);
        transition-duration: 0.1s;
    }
    
    /* 触摸设备简化角色动画 */
    .character:hover {
        transform: scale(1.1);
    }
}

/* ========== 减少动画偏好支持 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .fade-in-up,
    .fade-in-scale,
    .slide-in-left,
    .slide-in-right {
        opacity: 1;
        transform: none;
    }
}

/* ========== 滚动条优化 ========== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--cream);
}

::-webkit-scrollbar-thumb {
    background: var(--purple);
    border: 2px solid var(--cream);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--purple-dark);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* Firefox滚动条 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--purple) var(--cream);
}

/* ========== 角色特殊动画 ========== */

/* 轻柔弹跳 */
.bounce-gentle {
    animation: bounceGentle 2s ease-in-out infinite;
}

@keyframes bounceGentle {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-10px) scale(1.02); }
}

/* 漂浮旋转 */
.float-rotate {
    animation: floatRotate 4s ease-in-out infinite;
}

@keyframes floatRotate {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-15px) rotate(5deg); }
    50% { transform: translateY(0) rotate(0deg); }
    75% { transform: translateY(-10px) rotate(-5deg); }
}

/* 弹跳进入 */
.bounce-in {
    animation: bounceIn 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes bounceIn {
    0% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* 弹性缩放 */
.scale-elastic {
    animation: scaleElastic 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

@keyframes scaleElastic {
    0% { transform: scale(0.5); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* ========== 图片视差与缩放效果 ========== */
.image-reveal-wrapper {
    position: relative;
    overflow: hidden;
}

.image-reveal-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--purple);
    transform: scaleX(1);
    transform-origin: right;
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.image-reveal-wrapper.revealed::after {
    transform: scaleX(0);
}

.image-reveal-wrapper img {
    transform: scale(1.3);
    transition: transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.image-reveal-wrapper.revealed img {
    transform: scale(1);
}

/* ========== 文字拆分动画 ========== */
.split-text .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%) rotateX(-90deg);
    transform-origin: top;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.split-text.visible .char {
    opacity: 1;
    transform: translateY(0) rotateX(0);
}

/* ========== 弹性滚动容器 ========== */
.elastic-scroll {
    overflow-y: auto;
    scroll-snap-type: y proximity;
    -webkit-overflow-scrolling: touch;
}

.elastic-scroll > * {
    scroll-snap-align: start;
}

/* ========== 微交互动画库 ========== */

/* 心跳效果 */
.heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    14% { transform: scale(1.1); }
    28% { transform: scale(1); }
    42% { transform: scale(1.1); }
    70% { transform: scale(1); }
}

/* 抖动效果 */
.shake:hover {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-3px); }
    20%, 40%, 60%, 80% { transform: translateX(3px); }
}

/* 呼吸发光效果 */
.breathing-glow {
    animation: breathingGlow 3s ease-in-out infinite;
}

@keyframes breathingGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 40px rgba(139, 92, 246, 0.6);
        transform: scale(1.02);
    }
}

/* 摇摆效果 */
.wiggle:hover {
    animation: wiggle 0.6s ease-in-out;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    15% { transform: rotate(-5deg); }
    30% { transform: rotate(5deg); }
    45% { transform: rotate(-3deg); }
    60% { transform: rotate(3deg); }
    75% { transform: rotate(-1deg); }
    90% { transform: rotate(1deg); }
}

/* 脉冲光环 */
.pulse-ring {
    position: relative;
}

.pulse-ring::before {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--purple);
    border-radius: inherit;
    animation: pulseRing 2s ease-out infinite;
    opacity: 0;
}

@keyframes pulseRing {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.2); opacity: 0; }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 果冻效果 */
.jelly:hover {
    animation: jelly 0.5s ease;
}

@keyframes jelly {
    0%, 100% { transform: scale(1, 1); }
    25% { transform: scale(0.9, 1.1); }
    50% { transform: scale(1.1, 0.9); }
    75% { transform: scale(0.95, 1.05); }
}

/* 闪烁效果 */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 70%
    );
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

/* ========== 页面切换过渡 ========== */
.page-section {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-section.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 手势反馈动画 ========== */
.touch-feedback {
    position: relative;
    overflow: hidden;
}

.touch-feedback::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease, opacity 0.6s ease;
    pointer-events: none;
}

.touch-feedback:active::after {
    width: 300px;
    height: 300px;
    opacity: 0;
}

/* ========== 3D卡片翻转效果 ========== */
.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

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

.flip-card-front,
.flip-card-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

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

/* ========== 毛玻璃效果 ========== */
.glass {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ========== 输入框微交互 ========== */
.input-animated {
    position: relative;
}

.input-animated input,
.input-animated textarea {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-animated input:focus,
.input-animated textarea:focus {
    transform: scale(1.02);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.15), 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* 输入框下划线动画 */
.input-underline {
    position: relative;
}

.input-underline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--purple), var(--orange));
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.input-underline:focus-within::after {
    width: 100%;
}

/* ========== 社交链接磁吸效果 ========== */
.social-link-magnetic {
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-link-magnetic:hover {
    transform: scale(1.2) rotate(10deg);
    filter: drop-shadow(0 10px 20px rgba(139, 92, 246, 0.3));
}

/* ========== 技能条动画 ========== */
.skill-bar {
    position: relative;
    height: 8px;
    background: var(--cream-dark);
    border-radius: 4px;
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--purple), var(--orange));
    border-radius: 4px;
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-bar.visible .skill-bar-fill {
    transform: scaleX(1);
}

/* ========== 模态框动画 ========== */
.modal-overlay {
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.modal-content {
    transform: scale(0.9) translateY(50px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

/* ========== 下拉菜单动画 ========== */
.dropdown-menu {
    transform-origin: top;
    transform: perspective(1000px) rotateX(-90deg);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    visibility: hidden;
}

.dropdown.active .dropdown-menu {
    transform: perspective(1000px) rotateX(0deg);
    opacity: 1;
    visibility: visible;
}

/* ========== 标签切换动画 ========== */
.tab-indicator {
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tab-content {
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s ease;
}

.tab-content.active {
    opacity: 1;
    transform: translateX(0);
}

/* ========== 数字计数动画 ========== */
.counter {
    display: inline-block;
}

/* ========== 滚动进度指示器 ========== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--purple), var(--orange));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ========== 拖拽排序视觉反馈 ========== */
.dragging {
    opacity: 0.8;
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    cursor: grabbing;
}

.drag-over {
    transform: scale(1.02);
    border: 2px dashed var(--purple);
}

/* ========== 骨架屏动画 ========== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--cream-dark) 25%,
        var(--cream) 50%,
        var(--cream-dark) 75%
    );
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
}

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

/* ========== 粒子背景效果 ========== */
.particles-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--purple);
    border-radius: 50%;
    opacity: 0.3;
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    100% {
        transform: translateY(-100px) rotate(720deg);
        opacity: 0;
    }
}

/* ========== 手机端特殊交互优化 ========== */
@media (pointer: coarse) {
    /* 更大的点击区域 */
    .btn-memphis,
    .filter-tag,
    .nav-links a {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* 触摸反馈 */
    .touch-feedback-mobile {
        transition: transform 0.1s ease, background-color 0.2s ease;
    }

    .touch-feedback-mobile:active {
        transform: scale(0.96);
        background-color: rgba(139, 92, 246, 0.1);
    }

    /* 禁用复杂悬停效果，改用点击状态 */
    .work-card-memphis,
    .contact-card-memphis,
    .skill-category {
        transition: transform 0.2s ease;
    }

    .work-card-memphis.touched,
    .contact-card-memphis.touched,
    .skill-category.touched {
        transform: translateY(-8px) scale(1.02);
    }

    /* 滑动指示器 */
    .swipe-indicator {
        animation: swipeHint 2s ease-in-out infinite;
    }

    @keyframes swipeHint {
        0%, 100% { transform: translateX(0); opacity: 0.5; }
        50% { transform: translateX(20px); opacity: 1; }
    }
}

/* ========== 全站四角色创意转场 ========== */
.site-transition {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.22), transparent 42%),
        radial-gradient(circle at 80% 25%, rgba(249, 115, 22, 0.2), transparent 45%),
        radial-gradient(circle at 30% 80%, rgba(34, 211, 238, 0.14), transparent 48%),
        rgba(26, 26, 46, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 12000;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

.site-transition.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.site-transition-scene {
    width: min(92vw, 560px);
    min-height: 180px;
    padding: 1.1rem 1.25rem;
    border: 4px solid var(--black);
    border-radius: 22px;
    background: linear-gradient(160deg, rgba(255,255,255,0.95), rgba(254, 249, 231, 0.98));
    box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.9rem;
    position: relative;
    overflow: hidden;
}

.site-transition-scene::before,
.site-transition-scene::after {
    content: '';
    position: absolute;
    border: 3px solid var(--black);
    pointer-events: none;
}

.site-transition-scene::before {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    top: 10px;
    right: 22px;
    border-color: var(--purple);
    animation: siteTransitionDecoPulse 0.9s ease-in-out infinite;
}

.site-transition-scene::after {
    width: 76px;
    height: 14px;
    bottom: 20px;
    left: 28px;
    transform: rotate(-12deg);
    border-radius: 999px;
    border-color: var(--orange);
    animation: siteTransitionDecoFloat 0.9s ease-in-out infinite;
}

.site-transition-characters {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(56px, 1fr));
    align-items: end;
    justify-items: center;
    gap: 0.5rem;
}

.site-transition .character {
    transform-origin: center bottom;
    filter: drop-shadow(0 5px 8px rgba(0, 0, 0, 0.18));
    opacity: 0;
    animation-duration: 0.62s;
    animation-fill-mode: both;
    animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
}

.site-transition.is-active .site-transition-characters .character:nth-child(1) {
    animation-name: siteTransitionCharPurple;
    animation-delay: 0.02s;
}

.site-transition.is-active .site-transition-characters .character:nth-child(2) {
    animation-name: siteTransitionCharOrange;
    animation-delay: 0.08s;
}

.site-transition.is-active .site-transition-characters .character:nth-child(3) {
    animation-name: siteTransitionCharBlack;
    animation-delay: 0.14s;
}

.site-transition.is-active .site-transition-characters .character:nth-child(4) {
    animation-name: siteTransitionCharYellow;
    animation-delay: 0.2s;
}

.site-transition-text {
    margin: 0;
    font-family: var(--font-hand);
    font-size: clamp(1.05rem, 2.8vw, 1.3rem);
    font-weight: 700;
    color: var(--purple);
    transform: rotate(-1.5deg);
    padding: 0.32rem 0.8rem;
    border: 2px solid var(--black);
    border-radius: 999px;
    background: var(--white);
    box-shadow: 3px 3px 0 rgba(0,0,0,0.15);
    animation: siteTransitionTextPulse 0.7s ease-in-out infinite;
}

@keyframes siteTransitionCharPurple {
    0% { opacity: 0; transform: translate(-20px, 24px) scale(0.7) rotate(-7deg); }
    55% { opacity: 1; transform: translate(6px, -8px) scale(1.08) rotate(2deg); }
    100% { opacity: 1; transform: translate(0, 0) scale(1) rotate(0deg); }
}

@keyframes siteTransitionCharOrange {
    0% { opacity: 0; transform: translate(-12px, 22px) scale(0.68) rotate(-6deg); }
    55% { opacity: 1; transform: translate(8px, -10px) scale(1.1) rotate(3deg); }
    100% { opacity: 1; transform: translate(0, 0) scale(1) rotate(0deg); }
}

@keyframes siteTransitionCharBlack {
    0% { opacity: 0; transform: translate(12px, 22px) scale(0.68) rotate(6deg); }
    55% { opacity: 1; transform: translate(-7px, -9px) scale(1.08) rotate(-2deg); }
    100% { opacity: 1; transform: translate(0, 0) scale(1) rotate(0deg); }
}

@keyframes siteTransitionCharYellow {
    0% { opacity: 0; transform: translate(20px, 24px) scale(0.7) rotate(7deg); }
    55% { opacity: 1; transform: translate(-6px, -8px) scale(1.08) rotate(-2deg); }
    100% { opacity: 1; transform: translate(0, 0) scale(1) rotate(0deg); }
}

@keyframes siteTransitionDecoPulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
}

@keyframes siteTransitionDecoFloat {
    0%, 100% { transform: rotate(-12deg) translateY(0); }
    50% { transform: rotate(-9deg) translateY(-4px); }
}

@keyframes siteTransitionTextPulse {
    0%, 100% { transform: rotate(-1.5deg) scale(1); }
    50% { transform: rotate(0deg) scale(1.03); }
}

@media (max-width: 768px) {
    .site-transition-scene {
        width: min(94vw, 440px);
        min-height: 156px;
        padding: 0.85rem 0.9rem;
        box-shadow: 7px 7px 0 rgba(0, 0, 0, 0.36);
    }

    .site-transition .character {
        animation-duration: 0.48s;
    }

    .site-transition-text {
        font-size: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-transition,
    .site-transition.is-active {
        transition-duration: 0.18s;
    }

    .site-transition .character,
    .site-transition-text,
    .site-transition-scene::before,
    .site-transition-scene::after {
        animation: none !important;
        opacity: 1;
        transform: none;
    }
}