/* ==========================================================
   effects.css —— 全站动效层（配合 effects.js 使用）
   注意：类名统一用 fx- 前缀，且不含 card / item / modal，
   避免命中 theme.css 里的 [class*="card"] 等通配选择器。
   ========================================================== */

html {
    --fx-accent-rgb: 79, 172, 254;
    --fx-accent2-rgb: 0, 242, 254;
    --fx-shine-mid: #7c8cff;
    --fx-blob-1: rgba(79, 172, 254, 0.42);
    --fx-blob-2: rgba(0, 242, 254, 0.32);
    --fx-blob-3: rgba(167, 139, 250, 0.28);
}

html[data-theme="dark"] {
    --fx-accent-rgb: 56, 189, 248;
    --fx-accent2-rgb: 37, 99, 235;
    --fx-shine-mid: #a5b4fc;
    --fx-blob-1: rgba(56, 189, 248, 0.2);
    --fx-blob-2: rgba(37, 99, 235, 0.26);
    --fx-blob-3: rgba(139, 92, 246, 0.18);
}

/* ---------- 跨页面切换过渡（Chrome / Edge 126+，其他浏览器自动忽略） ---------- */
@view-transition {
    navigation: auto;
}

::view-transition-old(root) {
    animation: fxPageOut 0.26s cubic-bezier(0.4, 0, 1, 1) both;
}

::view-transition-new(root) {
    animation: fxPageIn 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes fxPageOut {
    to {
        opacity: 0;
        transform: translateY(-10px) scale(0.99);
    }
}

@keyframes fxPageIn {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.99);
    }
}

/* 主题切换：从点击处圆形扩散 */
html.fx-theme-switching::view-transition-old(root) {
    animation: none;
    mix-blend-mode: normal;
}

html.fx-theme-switching::view-transition-new(root) {
    animation: fxThemeReveal 0.6s cubic-bezier(0.65, 0, 0.35, 1) both;
    mix-blend-mode: normal;
}

@keyframes fxThemeReveal {
    from {
        clip-path: circle(0 at var(--fx-vt-x, 50%) var(--fx-vt-y, 50%));
    }
    to {
        clip-path: circle(var(--fx-vt-r, 150vmax) at var(--fx-vt-x, 50%) var(--fx-vt-y, 50%));
    }
}

/* ---------- 极光背景 ---------- */
.fx-aurora {
    position: fixed;
    inset: 0;
    /* body 自带渐变背景且是定位元素，负 z-index 会被盖住；DOM 顺序排在粒子层前面即可 */
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.fx-aurora span {
    position: absolute;
    width: 60vmax;
    height: 60vmax;
    border-radius: 50%;
    will-change: transform;
}

.fx-aurora span:nth-child(1) {
    top: -22vmax;
    left: -14vmax;
    background: radial-gradient(circle, var(--fx-blob-1), transparent 65%);
    animation: fxDrift1 26s ease-in-out infinite alternate;
}

.fx-aurora span:nth-child(2) {
    top: 30%;
    right: -22vmax;
    background: radial-gradient(circle, var(--fx-blob-2), transparent 65%);
    animation: fxDrift2 32s ease-in-out infinite alternate;
}

.fx-aurora span:nth-child(3) {
    bottom: -28vmax;
    left: 18%;
    background: radial-gradient(circle, var(--fx-blob-3), transparent 65%);
    animation: fxDrift3 38s ease-in-out infinite alternate;
}

@keyframes fxDrift1 {
    to { transform: translate(18vw, 22vh) scale(1.15); }
}

@keyframes fxDrift2 {
    to { transform: translate(-24vw, -16vh) scale(0.9); }
}

@keyframes fxDrift3 {
    to { transform: translate(14vw, -24vh) scale(1.2); }
}

/* ---------- 顶部阅读进度条 ---------- */
.fx-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 3000;
    pointer-events: none;
    background: linear-gradient(90deg, var(--page-accent), var(--fx-shine-mid), var(--page-accent-2));
    box-shadow: 0 0 12px rgba(var(--fx-accent-rgb), 0.6);
    transform: scaleX(0);
    transform-origin: 0 50%;
}

/* ---------- 鼠标光晕（在粒子层与内容层之间） ---------- */
.fx-cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 520px;
    height: 520px;
    margin: -260px 0 0 -260px;
    border-radius: 50%;
    z-index: 1;
    pointer-events: none;
    background: radial-gradient(circle, rgba(var(--fx-accent-rgb), 0.2), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    will-change: transform;
}

.fx-cursor-glow.is-on {
    opacity: 1;
}

/* ---------- 标题流光渐变 ---------- */
.logo,
.page-header h1,
.page-title h1,
.profile-info h1 {
    background-image: linear-gradient(90deg,
            var(--page-grad-start),
            var(--fx-shine-mid),
            var(--page-grad-end),
            var(--fx-shine-mid),
            var(--page-grad-start));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fxShine 6s linear infinite;
}

/* logo 同时还有入场 fadeIn，两个动画要写在一起，否则会互相覆盖 */
.logo.fade-in {
    animation: fadeIn 0.8s ease forwards, fxShine 6s linear infinite;
}

@keyframes fxShine {
    to { background-position: -200% 0; }
}

/* ---------- 头像呼吸光环 ---------- */
.profile-img {
    animation: fxAvatarPulse 3s ease-out infinite;
}

@keyframes fxAvatarPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--fx-accent-rgb), 0.5), 0 5px 15px rgba(var(--fx-accent-rgb), 0.3);
    }
    70%,
    100% {
        box-shadow: 0 0 0 16px rgba(var(--fx-accent-rgb), 0), 0 5px 15px rgba(var(--fx-accent-rgb), 0.3);
    }
}

/* ---------- 打字机 ---------- */
.fx-typing {
    min-height: 1.5em;
}

.fx-typing::after {
    content: '';
    display: inline-block;
    width: 2px;
    height: 1em;
    margin-left: 4px;
    vertical-align: -0.12em;
    background: currentColor;
    animation: fxCaret 1s steps(1) infinite;
}

@keyframes fxCaret {
    50% { opacity: 0; }
}

/* ---------- 滚动进场 ---------- */
.fx-reveal {
    opacity: 0;
    transform: translate3d(0, 28px, 0) scale(0.98);
    transition:
        opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1) var(--fx-delay, 0ms),
        transform 0.8s cubic-bezier(0.22, 1, 0.36, 1) var(--fx-delay, 0ms) !important;
}

.fx-reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* 时间线：竖线从上往下画出来，圆点向外扩散 */
.timeline-line.fx-line {
    transform: scaleY(0);
    transform-origin: 50% 0;
    transition: transform 1.4s cubic-bezier(0.65, 0, 0.35, 1);
}

.timeline-line.fx-line.is-visible {
    transform: scaleY(1);
}

.timeline-dot::after {
    content: '';
    position: absolute;
    inset: -9px;
    border-radius: 50%;
    border: 2px solid rgba(var(--fx-accent-rgb), 0.6);
    pointer-events: none;
    animation: fxDotPulse 2.4s ease-out infinite;
}

@keyframes fxDotPulse {
    from {
        transform: scale(0.6);
        opacity: 1;
    }
    to {
        transform: scale(1.7);
        opacity: 0;
    }
}

/* 页面标题下划线展开 */
.page-title::after {
    animation: fxUnderline 1s cubic-bezier(0.22, 1, 0.36, 1) 0.35s both;
}

@keyframes fxUnderline {
    from { width: 0; }
}

/* ---------- 卡片：跟随鼠标的光斑 + 发光描边 ---------- */
.fx-spot {
    isolation: isolate;
}

.fx-spot.fx-spot-pos {
    position: relative;
}

/* 发光描边：用 mask 只保留 1.5px 的边框区域 */
.fx-spot::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    pointer-events: none;
    background: radial-gradient(260px circle at var(--fx-x, 50%) var(--fx-y, 50%),
            rgba(var(--fx-accent-rgb), 0.95), rgba(var(--fx-accent2-rgb), 0.35) 40%, transparent 70%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.35s ease;
    z-index: 2;
}

/* 内部柔光：放在内容后面（z-index:-1 + isolation） */
.fx-spot.fx-spot-fill::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(420px circle at var(--fx-x, 50%) var(--fx-y, 50%),
            rgba(var(--fx-accent-rgb), 0.12), transparent 60%);
    opacity: 0;
    transition: opacity 0.35s ease;
    z-index: -1;
}

.fx-spot:hover::after,
.fx-spot.fx-spot-fill:hover::before {
    opacity: 1;
}

/* 3D 倾斜：跟随时用短过渡，离开后回到卡片自身的过渡 */
.fx-tilting {
    transition: transform 0.12s linear, box-shadow 0.3s ease, border-color 0.3s ease !important;
}

/* ---------- 点击水波纹 ---------- */
.fx-ripple-host {
    overflow: hidden;
}

.fx-ripple {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    background: var(--fx-ripple-color, rgba(var(--fx-accent-rgb), 0.3));
    transform: scale(0);
    animation: fxRipple 0.65s ease-out forwards;
    z-index: 3;
}

.copy-mini,
.copy-btn,
.submit-btn,
.resume-download-btn,
.dev-modal-button,
.social-links a,
.back-to-top,
.btn {
    --fx-ripple-color: rgba(255, 255, 255, 0.45);
}

@keyframes fxRipple {
    to {
        transform: scale(1);
        opacity: 0;
    }
}

/* ---------- 点击火花画布 ---------- */
.fx-sparks {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 2500;
}

/* ---------- 导航 / 社交图标微动效 ---------- */
nav a > i:first-child {
    display: inline-block;
    transition: transform 0.3s ease;
}

nav a:hover > i:first-child {
    animation: fxIconPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-links a i {
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-links a:hover i {
    transform: scale(1.15) rotate(-8deg);
}

@keyframes fxIconPop {
    40% { transform: translateY(-4px) scale(1.25) rotate(-10deg); }
    70% { transform: translateY(1px) scale(0.95) rotate(4deg); }
}

/* ---------- 技能条流光 ---------- */
.skill-bar .skill-progress {
    position: relative;
    overflow: hidden;
    transition: width 1.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.skill-progress::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, transparent 20%, rgba(255, 255, 255, 0.55) 50%, transparent 80%);
    transform: translateX(-100%);
    animation: fxSweep 2.6s ease-in-out 1.6s infinite;
}

@keyframes fxSweep {
    60%,
    100% { transform: translateX(100%); }
}

/* ---------- 触屏：按压反馈 ---------- */
/* 不改 transition，沿用元素自身的过渡，避免和滚动进场的过渡冲突 */
.fx-press.is-pressed {
    transform: scale(0.965) !important;
}

/* 卡片被按住时，手指位置亮起（复用 fx-spot 的光斑） */
.fx-spot.is-touched::after,
.fx-spot.fx-spot-fill.is-touched::before {
    opacity: 1;
}

/* ---------- 触屏：陀螺仪视差（只移动背景层） ---------- */
.fx-aurora,
#particles-js {
    translate: var(--fx-tilt-x, 0px) var(--fx-tilt-y, 0px);
}

/* ---------- 手机菜单：遮罩 + 菜单项依次滑入 ---------- */
.fx-nav-backdrop {
    display: none;
}

@media (max-width: 768px) {
    .fx-nav-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 998;
        background: rgba(2, 6, 23, 0.35);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .fx-nav-backdrop.is-on {
        opacity: 1;
        visibility: visible;
    }

    #mainNav > ul > li {
        opacity: 0;
        transform: translateX(28px);
        transition: opacity 0.3s ease, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    }

    #mainNav.active > ul > li {
        opacity: 1;
        transform: none;
    }

    #mainNav.active > ul > li:nth-child(1) { transition-delay: 0.08s; }
    #mainNav.active > ul > li:nth-child(2) { transition-delay: 0.13s; }
    #mainNav.active > ul > li:nth-child(3) { transition-delay: 0.18s; }
    #mainNav.active > ul > li:nth-child(4) { transition-delay: 0.23s; }
    #mainNav.active > ul > li:nth-child(5) { transition-delay: 0.28s; }
    #mainNav.active > ul > li:nth-child(6) { transition-delay: 0.33s; }
    #mainNav.active > ul > li:nth-child(7) { transition-delay: 0.38s; }
}

/* ---------- 减少动态效果：尊重系统设置 ---------- */
@media (prefers-reduced-motion: reduce) {
    ::view-transition-old(root),
    ::view-transition-new(root) {
        animation: none !important;
    }

    .fx-aurora span,
    .profile-img,
    .timeline-dot::after,
    .skill-progress::after,
    .fx-typing::after,
    .page-title::after,
    nav a:hover > i:first-child {
        animation: none !important;
    }

    .logo,
    .page-header h1,
    .page-title h1,
    .profile-info h1 {
        animation: none;
    }

    .logo.fade-in {
        animation: fadeIn 0.8s ease forwards;
    }

    .skill-bar .skill-progress {
        transition: none;
    }

    .fx-press.is-pressed {
        transform: none !important;
    }

    #mainNav > ul > li {
        transform: none !important;
        transition: opacity 0.2s ease !important;
    }
}