/* ============================================================================
   金牛论坛 · 沉浸式视觉层 v5.0  ——  OBSIDIAN AURORA
   ----------------------------------------------------------------------------
   在 v4.0「皇家黑金」基线之上的增量层，**必须排在 app.css 之后加载**。
   本层职责：
     1. 大气氛围（极光 / 星尘 / 噪点 / 暗角 / 流金网格）
     2. 全站动效体系（20+ 关键帧、滚动揭示、错峰进场、磁性悬停、倾斜、计数）
     3. 可伸缩毛玻璃超级菜单（LX Super Menu）
     4. 顶级游戏社区组件重铸（Hero / 数据带 / 板块站台 / 榜单 / 话题卡 / 详情）
     5. 明暗双主题一致性与降级友好
   所有选择器以 lx- 前缀为主，同时对既有组件做增强式覆盖（不删除旧样式）。
   ============================================================================ */

/* ---------------------------------------------------------------------------
   0. 设计令牌 v5
   --------------------------------------------------------------------------- */
:root {
    /* 氛围底色 */
    --lx-void:        #F7F2E8;
    --lx-void-2:      #EFE7D8;
    --lx-abyss:       #FBF8F1;

    /* 面板（毛玻璃） */
    --lx-panel:       rgba(255, 255, 255, .72);
    --lx-panel-solid: rgba(255, 255, 255, .92);
    --lx-panel-soft:  rgba(255, 255, 255, .55);
    --lx-line:        rgba(184, 146, 78, .22);
    --lx-line-hot:    rgba(176, 138, 76, .36);

    /* 文字 */
    --lx-ink:         #2C261D;
    --lx-ink-2:       #6F6657;
    --lx-mute:        #A0937C;

    /* 能量色（游戏感强调）—— 统一为「暖金主调 + 单一冷调点缀」，降低霓虹感 */
    --lx-gold:        #B08A4C;
    --lx-gold-2:      #BFA075;
    --lx-gold-3:      #DCC089;
    --lx-cyan:        #3E989C;
    --lx-violet:      #8A6FB8;
    --lx-crimson:     #A9664F;

    /* 玻璃 */
    --lx-glass:       blur(26px) saturate(180%);
    --lx-glass-heavy: blur(40px) saturate(200%);

    /* 光 —— 收敛强度，避免高饱和光晕显得跳脱 */
    --lx-glow-gold:   rgba(196, 164, 106, .30);
    --lx-glow-cyan:   rgba(62, 152, 156, .24);
    --lx-glow-violet: rgba(138, 111, 184, .22);

    /* 投影 */
    --lx-sh-1: 0 2px 8px -4px rgba(90, 72, 40, .30);
    --lx-sh-2: 0 10px 28px -14px rgba(90, 72, 40, .38);
    --lx-sh-3: 0 24px 60px -24px rgba(90, 72, 40, .46);
    --lx-sh-4: 0 48px 110px -36px rgba(60, 46, 20, .52);

    /* 运动 */
    --lx-ease: cubic-bezier(.22, 1, .36, 1);
    --lx-ease-io: cubic-bezier(.65, .05, .36, 1);
    --lx-bounce: cubic-bezier(.34, 1.56, .64, 1);
    --lx-t-fast: .22s;
    --lx-t: .38s;
    --lx-t-slow: .68s;
}

[data-theme="dark"],
[data-bs-theme="dark"] {
    --lx-void:        #080706;
    --lx-void-2:      #0E0B08;
    --lx-abyss:       #141009;

    --lx-panel:       rgba(22, 18, 12, .68);
    --lx-panel-solid: rgba(20, 16, 11, .92);
    --lx-panel-soft:  rgba(30, 25, 17, .48);
    --lx-line:        rgba(212, 180, 131, .16);
    --lx-line-hot:    rgba(201, 172, 119, .30);

    --lx-ink:         #F2E9D8;
    --lx-ink-2:       #C4B69C;
    --lx-mute:        #8A7F69;

    --lx-gold:        #C9AC77;
    --lx-gold-2:      #BC9E74;
    --lx-gold-3:      #E2CC9A;
    --lx-cyan:        #74C6C9;
    --lx-violet:      #AD9AD6;
    --lx-crimson:     #D08C76;

    --lx-glow-gold:   rgba(212, 182, 124, .28);
    --lx-glow-cyan:   rgba(116, 198, 201, .22);
    --lx-glow-violet: rgba(173, 154, 214, .20);

    --lx-sh-1: 0 2px 10px -4px rgba(0, 0, 0, .60);
    --lx-sh-2: 0 12px 30px -14px rgba(0, 0, 0, .70);
    --lx-sh-3: 0 28px 66px -26px rgba(0, 0, 0, .78);
    --lx-sh-4: 0 52px 120px -40px rgba(0, 0, 0, .86);
}

/* ---------------------------------------------------------------------------
   1. 大气氛围 —— 极光 / 星尘 / 噪点 / 暗角 / 网格
   --------------------------------------------------------------------------- */
body { position: relative; overflow-x: hidden; }

/* 极光：两团缓慢漂移的柔光 */
.lx-atmos {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}
.lx-atmos i {
    position: absolute;
    display: block;
    border-radius: 50%;
    filter: blur(90px);
    opacity: .55;
    will-change: transform;
}
.lx-atmos .a1 {
    width: 620px; height: 620px;
    top: -240px; left: -140px;
    background: radial-gradient(circle at 30% 30%, var(--lx-glow-gold), transparent 68%);
    animation: lxDrift1 26s var(--lx-ease-io) infinite alternate;
}
.lx-atmos .a2 {
    width: 540px; height: 540px;
    top: -180px; right: -160px;
    background: radial-gradient(circle at 60% 40%, var(--lx-glow-violet), transparent 70%);
    animation: lxDrift2 32s var(--lx-ease-io) infinite alternate;
}
.lx-atmos .a3 {
    width: 480px; height: 480px;
    bottom: -220px; left: 38%;
    background: radial-gradient(circle at 50% 50%, var(--lx-glow-cyan), transparent 72%);
    animation: lxDrift3 38s var(--lx-ease-io) infinite alternate;
    opacity: .40;
}
[data-theme="light"] .lx-atmos i { opacity: .30; }

@keyframes lxDrift1 {
    0%   { transform: translate3d(0, 0, 0) scale(1); }
    50%  { transform: translate3d(90px, 60px, 0) scale(1.12); }
    100% { transform: translate3d(-40px, 120px, 0) scale(.96); }
}
@keyframes lxDrift2 {
    0%   { transform: translate3d(0, 0, 0) scale(1.05); }
    50%  { transform: translate3d(-110px, 40px, 0) scale(.94); }
    100% { transform: translate3d(50px, -70px, 0) scale(1.14); }
}
@keyframes lxDrift3 {
    0%   { transform: translate3d(0, 0, 0) scale(.95); }
    100% { transform: translate3d(-140px, -90px, 0) scale(1.18); }
}

/* 流金细网格 + 顶部光带 */
.lx-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(var(--lx-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--lx-line) 1px, transparent 1px);
    background-size: 76px 76px;
    mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 0%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 0%, transparent 78%);
    opacity: .55;
}
/* 胶片噪点 */
.lx-grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: .30;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

.main-content { position: relative; z-index: 2; }

/* ---------------------------------------------------------------------------
   2. 阅读进度条
   --------------------------------------------------------------------------- */
.lx-progress {
    position: fixed;
    top: 0; left: 0;
    height: 2px;
    width: 100%;
    transform: scaleX(0);
    transform-origin: 0 50%;
    background: linear-gradient(90deg, var(--lx-gold-2), var(--lx-gold-3) 40%, var(--lx-cyan) 100%);
    box-shadow: 0 0 14px var(--lx-glow-gold);
    z-index: 2000;
    pointer-events: none;
}

/* ---------------------------------------------------------------------------
   3. 导航栏 —— 悬浮玻璃胶囊 + 滚动伸缩 + 超级菜单
   --------------------------------------------------------------------------- */
.lx-nav-shell {
    position: sticky;
    top: 0;
    z-index: 1300;
    padding: 10px 0 0;
    transition: padding var(--lx-t) var(--lx-ease);
}
.lx-nav-shell.is-stuck { padding-top: 6px; }

/* 层叠与包含块：
   .lx-nav-shell(sticky) 负责吸顶；.bbs-navbar(relative) 作为超级菜单的定位基准，
   面板宽度与导航胶囊对齐，视觉上浑然一体。 */
.lx-nav-shell { position: sticky; top: 0; z-index: 1300; }
.lx-nav-shell > .container { position: static; }
.bbs-navbar::before { display: none; }
.bbs-navbar::after {
    content: "";
    position: absolute;
    top: 0; left: 14%; right: 14%;
    height: 1px;
    border-radius: var(--r-pill);
    background: linear-gradient(90deg, transparent, var(--lx-gold-3), transparent);
    opacity: .7;
}
.lx-nav-row { gap: var(--s-2); }

/* 展开态不得裁剪超级菜单 */
.bbs-navbar .navbar-collapse,
.bbs-navbar .navbar-collapse.collapse.show { overflow: visible; }
.bbs-navbar .navbar-collapse.collapsing { overflow: hidden; }

.bbs-navbar {
    position: relative;
    border-radius: var(--r-pill);
    border: 1px solid var(--lx-line);
    background: var(--lx-panel);
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    box-shadow: var(--lx-sh-2);
    padding: var(--s-2) var(--s-3);
    transition: box-shadow var(--lx-t) var(--lx-ease),
                background var(--lx-t) var(--lx-ease),
                border-color var(--lx-t) var(--lx-ease),
                transform var(--lx-t) var(--lx-ease);
    overflow: visible;
}
.bbs-navbar::before {
    border-radius: var(--r-pill) var(--r-pill) 0 0;
    opacity: .55;
}
.lx-nav-shell.is-stuck .bbs-navbar {
    background: var(--lx-panel-solid);
    box-shadow: var(--lx-sh-3), inset 0 1px 0 rgba(255, 255, 255, .06);
    border-color: var(--lx-line-hot);
}
.bbs-navbar .container { padding-left: 6px; padding-right: 6px; }
.navbar-brand { gap: 10px !important; }
.navbar-brand .logo-main { transition: transform .5s var(--lx-bounce), box-shadow var(--lx-t) var(--lx-ease); }
.brand-lockup:hover .logo-main { transform: rotate(-10deg) scale(1.1); }

.bbs-navbar .nav-link {
    border-radius: var(--r-pill);
    font-weight: 500;
    letter-spacing: .04em;
    overflow: hidden;
    isolation: isolate;
}
/* 悬停：金色柔光自下而上漫上来 */
.bbs-navbar .nav-link::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(180deg, transparent, var(--lx-glow-gold));
    transform: translateY(100%);
    transition: transform var(--lx-t) var(--lx-ease);
}
.bbs-navbar .nav-link:hover::before { transform: translateY(0); }
.bbs-navbar .nav-link:hover { color: var(--lx-ink); }

/* ---- 超级菜单（可伸缩毛玻璃） ---- */
.lx-nav-item { position: static; }
.lx-super-trigger {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.lx-super-trigger .caret {
    width: 10px; height: 10px;
    transition: transform var(--lx-t) var(--lx-bounce);
    opacity: .75;
}

.lx-super {
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    /* 顶部留出与导航的间距，左右留白避免窄屏下面板贴边 */
    padding: 12px clamp(12px, 2vw, 28px) 0;
    z-index: 1250;
    pointer-events: none;
}
/* 0fr → 1fr：无需固定高度也能丝滑伸缩 */
.lx-super-inner {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transform: translateY(-10px);
    transition: grid-template-rows var(--lx-t-slow) var(--lx-ease),
                opacity var(--lx-t) var(--lx-ease),
                transform var(--lx-t-slow) var(--lx-ease);
    pointer-events: none;
}
.lx-super-wrap { overflow: hidden; min-height: 0; }

.lx-super-panel {
    position: relative;
    margin: 0 auto;
    width: min(1180px, 100%);
    /* 面板不超过可视高度，超出时面板内部滚动而非被视口裁切 */
    max-height: calc(100vh - 104px);
    overflow-y: auto;
    overscroll-behavior: contain;
    border-radius: var(--r-lg);
    border: 1px solid var(--lx-line-hot);
    background: var(--lx-panel-solid);
    backdrop-filter: var(--lx-glass-heavy);
    -webkit-backdrop-filter: var(--lx-glass-heavy);
    box-shadow: var(--lx-sh-4), inset 0 1px 0 rgba(255, 255, 255, .08);
    padding: var(--s-4);
    display: grid;
    /* minmax(0,·) 让两栏都能收缩，避免右栏被左栏内容顶到只剩百来像素 */
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .62fr);
    gap: var(--s-4);
}
/* 顶部流金细线 */
.lx-super-panel::before {
    content: "";
    position: absolute;
    top: 0; left: 8%; right: 8%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--lx-gold-3), transparent);
    opacity: .45;
}

.lx-nav-item.is-open .lx-super-inner,
.lx-nav-item:hover .lx-super-inner,
.lx-nav-item:focus-within .lx-super-inner {
    grid-template-rows: 1fr;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.lx-nav-item.is-open .lx-super,
.lx-nav-item:hover .lx-super,
.lx-nav-item:focus-within .lx-super { pointer-events: auto; }
.lx-nav-item.is-open .caret { transform: rotate(180deg); }

.lx-super-title {
    display: block;
    font-size: 10px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--lx-mute);
    margin: 0 0 var(--s-3);
    padding-left: 2px;
    /* 标题强制单行，避免窄栏下折成多行 */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.lx-super-grid {
    display: grid;
    /* minmax(0,1fr)：允许列收缩，长描述改为省略号而不是撑破/挤压 */
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--s-2);
}
.lx-super-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    min-width: 0;
    padding: 11px 12px;
    border-radius: var(--r-md);
    border: 1px solid transparent;
    background: transparent;
    color: var(--lx-ink-2);
    text-decoration: none;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .34s var(--lx-ease), transform .34s var(--lx-ease),
                background .24s var(--lx-ease), border-color .24s var(--lx-ease),
                box-shadow .24s var(--lx-ease);
}
.lx-nav-item:hover .lx-super-item,
.lx-nav-item.is-open .lx-super-item { opacity: 1; transform: translateY(0); }
.lx-super-item:nth-child(1) { transition-delay: .04s; }
.lx-super-item:nth-child(2) { transition-delay: .07s; }
.lx-super-item:nth-child(3) { transition-delay: .10s; }
.lx-super-item:nth-child(4) { transition-delay: .13s; }
.lx-super-item:nth-child(5) { transition-delay: .16s; }
.lx-super-item:nth-child(6) { transition-delay: .19s; }
.lx-super-item:nth-child(7) { transition-delay: .22s; }
.lx-super-item:nth-child(8) { transition-delay: .25s; }

.lx-super-item:hover {
    background: linear-gradient(150deg, var(--lx-glow-gold), transparent 70%);
    border-color: var(--lx-line-hot);
    box-shadow: var(--lx-sh-2);
    transform: translateY(-2px);
}
.lx-super-ico {
    flex: 0 0 auto;
    width: 34px; height: 34px;
    display: grid; place-items: center;
    border-radius: var(--r-sm);
    border: 1px solid var(--lx-line);
    background: linear-gradient(150deg, var(--lx-glow-gold), transparent 70%);
    transition: transform .34s var(--lx-bounce), box-shadow var(--lx-t) var(--lx-ease);
}
.lx-super-item:hover .lx-super-ico { transform: scale(1.08) rotate(-3deg); box-shadow: 0 0 13px var(--lx-glow-gold); }
.lx-super-name {
    display: block;
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--lx-ink);
    line-height: 1.35;
}
.lx-super-desc {
    display: block;
    font-size: 10.5px;
    color: var(--lx-mute);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 超级菜单右栏：精选速览 */
.lx-super-side {
    border-left: 1px solid var(--lx-line);
    padding-left: var(--s-4);
    min-width: 0;
}
.lx-super-hot { display: grid; gap: 6px; }
.lx-super-hot a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 9px;
    border-radius: var(--r-sm);
    font-size: 11.5px;
    color: var(--lx-ink-2);
    text-decoration: none;
    opacity: 0;
    transform: translateX(10px);
    transition: opacity .34s var(--lx-ease), transform .34s var(--lx-ease), background .2s var(--lx-ease);
}
.lx-nav-item:hover .lx-super-hot a,
.lx-nav-item.is-open .lx-super-hot a { opacity: 1; transform: translateX(0); }
.lx-super-hot a:nth-child(1) { transition-delay: .10s; }
.lx-super-hot a:nth-child(2) { transition-delay: .15s; }
.lx-super-hot a:nth-child(3) { transition-delay: .20s; }
.lx-super-hot a:nth-child(4) { transition-delay: .25s; }
.lx-super-hot a:nth-child(5) { transition-delay: .30s; }
.lx-super-hot a:hover { background: var(--lx-glow-gold); color: var(--lx-ink); }
.lx-super-hot .rk {
    flex: 0 0 auto;
    width: 18px; height: 18px;
    display: grid; place-items: center;
    border-radius: 5px;
    font-size: 10px;
    font-weight: 700;
    background: var(--lx-panel-soft);
    color: var(--lx-mute);
    border: 1px solid var(--lx-line);
}
.lx-super-hot a:nth-child(-n+3) .rk {
    background: linear-gradient(140deg, var(--lx-gold-2), var(--lx-gold-3));
    color: #21190E;
    border-color: transparent;
}
.lx-super-hot .tx {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.lx-super-cta {
    margin-top: var(--s-3);
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* 移动端：超级菜单退化为常规下拉 */
@media (max-width: 991px) {
    .lx-super { display: none !important; }
}

/* ---- 搜索：聚焦展开 + 光晕 ---- */
.lx-search {
    position: relative;
    display: flex;
    align-items: center;
}
.lx-search .ico {
    position: absolute;
    left: 11px;
    pointer-events: none;
    opacity: .6;
}
.search-input {
    background: var(--lx-panel-soft);
    border-color: var(--lx-line);
    color: var(--lx-ink);
    padding-left: 34px;
}
.search-input:focus { box-shadow: 0 0 0 4px var(--lx-glow-gold), var(--lx-sh-1); }

/* ---------------------------------------------------------------------------
   4. 动效体系
   --------------------------------------------------------------------------- */
@keyframes lxFadeUp {
    from { opacity: 0; transform: translate3d(0, 24px, 0); }
    to   { opacity: 1; transform: none; }
}
@keyframes lxFadeDown {
    from { opacity: 0; transform: translate3d(0, -18px, 0); }
    to   { opacity: 1; transform: none; }
}
@keyframes lxFadeLeft {
    from { opacity: 0; transform: translate3d(24px, 0, 0); }
    to   { opacity: 1; transform: none; }
}
@keyframes lxFadeRight {
    from { opacity: 0; transform: translate3d(-24px, 0, 0); }
    to   { opacity: 1; transform: none; }
}
@keyframes lxZoom {
    from { opacity: 0; transform: scale(.94); }
    to   { opacity: 1; transform: none; }
}
@keyframes lxBlurIn {
    from { opacity: 0; filter: blur(12px); transform: scale(1.03); }
    to   { opacity: 1; filter: blur(0); transform: none; }
}
@keyframes lxFlip {
    from { opacity: 0; transform: perspective(900px) rotateX(-24deg); }
    to   { opacity: 1; transform: none; }
}
@keyframes lxPop {
    0%   { opacity: 0; transform: scale(.82); }
    62%  { opacity: 1; transform: scale(1.05); }
    100% { opacity: 1; transform: scale(1); }
}
@keyframes lxFloatY {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}
@keyframes lxBreathe {
    0%, 100% { box-shadow: 0 0 0 0 var(--lx-glow-gold); }
    50%      { box-shadow: 0 0 0 12px transparent; }
}
@keyframes lxShimmer {
    0%   { background-position: -220% 0; }
    100% { background-position: 220% 0; }
}
@keyframes lxBorderRun {
    0%   { --lx-ang: 0deg; }
    100% { --lx-ang: 360deg; }
}
@keyframes lxSpinSlow {
    to { transform: rotate(360deg); }
}
@keyframes lxScan {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(300%); }
}
@keyframes lxWaveBar {
    0%, 100% { transform: scaleY(.35); }
    50%      { transform: scaleY(1); }
}
@keyframes lxPulseDot {
    0%   { box-shadow: 0 0 0 0 var(--lx-glow-gold); opacity: 1; }
    70%  { box-shadow: 0 0 0 8px transparent; opacity: .85; }
    100% { box-shadow: 0 0 0 0 transparent; opacity: 1; }
}
@keyframes lxMarquee {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
@keyframes lxGlowSweep {
    0%   { opacity: 0; transform: translateX(-120%) skewX(-18deg); }
    55%  { opacity: .5; }
    100% { opacity: 0; transform: translateX(220%) skewX(-18deg); }
}
@keyframes lxRingExpand {
    0%   { transform: scale(.6); opacity: .9; }
    100% { transform: scale(2.4); opacity: 0; }
}

/* 滚动揭示：默认隐藏，进视口触发 */
[data-lx] { will-change: opacity, transform; }
[data-lx] { opacity: 0; }
[data-lx].lx-in { animation-duration: .72s; animation-fill-mode: both; animation-timing-function: var(--lx-ease); }

[data-lx="up"].lx-in          { animation-name: lxFadeUp; }
[data-lx="down"].lx-in        { animation-name: lxFadeDown; }
[data-lx="left"].lx-in        { animation-name: lxFadeLeft; }
[data-lx="right"].lx-in       { animation-name: lxFadeRight; }
[data-lx="zoom"].lx-in        { animation-name: lxZoom; }
[data-lx="blur"].lx-in        { animation-name: lxBlurIn; }
[data-lx="flip"].lx-in        { animation-name: lxFlip; }
[data-lx="pop"].lx-in         { animation-name: lxPop; }
[data-lx="none"].lx-in        { animation-name: lxFadeUp; }

/* 进场即首屏可见的元素，由 JS 立即放行；此处保证无 JS 时内容仍可见 */
html:not(.lx-js) [data-lx] { opacity: 1 !important; }

/* ---- 通用动效工具类 ---- */
.lx-float        { animation: lxFloatY 5s var(--lx-ease-io) infinite; }
.lx-breathe      { animation: lxBreathe 2.6s var(--lx-ease-io) infinite; }
.lx-spin-slow    { animation: lxSpinSlow 22s linear infinite; }
.lx-hover-lift   { transition: transform var(--lx-t) var(--lx-ease), box-shadow var(--lx-t) var(--lx-ease); }
.lx-hover-lift:hover { transform: translateY(-6px); box-shadow: var(--lx-sh-3); }
.lx-hover-tilt   { transition: transform .5s var(--lx-bounce), box-shadow var(--lx-t) var(--lx-ease); transform-style: preserve-geometry; }

/* 流金文字 */
.lx-gold-text {
    background: linear-gradient(100deg, var(--lx-gold-2) 0%, var(--lx-gold-3) 38%, var(--lx-gold-2) 62%, var(--lx-gold) 100%);
    background-size: 220% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: lxShimmer 7s linear infinite;
}
/* 扫光容器 */
.lx-sheen { position: relative; overflow: hidden; }
.lx-sheen::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0;
    width: 42%;
    background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .28), transparent);
    animation: lxGlowSweep 4.6s var(--lx-ease-io) infinite;
    pointer-events: none;
}
[data-theme="dark"] .lx-sheen::after { background: linear-gradient(100deg, transparent, rgba(255, 240, 210, .13), transparent); }

/* 脉冲圆点 */
.lx-dot-pulse {
    position: relative;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--lx-gold-3);
    display: inline-block;
    animation: lxPulseDot 2.2s var(--lx-ease-io) infinite;
}

/* ---------------------------------------------------------------------------
   5. 按钮重铸
   --------------------------------------------------------------------------- */
.btn { transition: all var(--lx-t) var(--lx-ease); position: relative; overflow: hidden; }
.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--lx-mx, 50%) var(--lx-my, 50%), rgba(255, 255, 255, .34), transparent 58%);
    opacity: 0;
    transition: opacity var(--lx-t) var(--lx-ease);
    pointer-events: none;
}
.btn:hover::after { opacity: 1; }
.btn-primary {
    background: linear-gradient(120deg, var(--lx-gold-2), var(--lx-gold-3) 52%, var(--lx-gold-2));
    background-size: 200% 100%;
    border: none;
    color: #20180C;
    font-weight: 600;
    box-shadow: var(--lx-sh-2);
}
.btn-primary:hover {
    background-position: 100% 0;
    color: #20180C;
    box-shadow: 0 14px 34px -10px var(--lx-glow-gold), var(--lx-sh-2);
    transform: translateY(-2px);
}
[data-theme="dark"] .btn-primary { color: #1A1206; }
.btn-ghost {
    background: var(--lx-panel-soft);
    border: 1px solid var(--lx-line);
    color: var(--lx-ink-2);
}
.btn-ghost:hover {
    border-color: var(--lx-line-hot);
    color: var(--lx-ink);
    background: var(--lx-panel);
    transform: translateY(-1px);
}
.btn-outline-secondary { border-color: var(--lx-line); color: var(--lx-ink-2); }
.btn-outline-secondary:hover { border-color: var(--lx-line-hot); color: var(--lx-ink); background: var(--lx-panel-soft); }

.btn-create, .btn-login { border-radius: var(--r-pill) !important; box-shadow: var(--lx-sh-2); }
.btn-create:hover, .btn-login:hover { transform: translateY(-2px) scale(1.02); }

/* ---------------------------------------------------------------------------
   6. 卡片 / 话题卡重铸
   --------------------------------------------------------------------------- */
.bbs-card, .sidebar-card, .topic-card {
    position: relative;
    border: 1px solid var(--lx-line);
    background: var(--lx-panel);
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    box-shadow: var(--lx-sh-2);
    transition: transform var(--lx-t) var(--lx-ease),
                box-shadow var(--lx-t) var(--lx-ease),
                border-color var(--lx-t) var(--lx-ease);
    overflow: hidden;
}
/* 顶部高光细线 */
.bbs-card::before, .sidebar-card::before, .topic-card::before {
    content: "";
    position: absolute;
    top: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--lx-line-hot), transparent);
    opacity: 0;
    transition: opacity var(--lx-t) var(--lx-ease);
}
.bbs-card:hover::before, .sidebar-card:hover::before, .topic-card:hover::before { opacity: 1; }

.topic-card {
    cursor: pointer;
    border-radius: var(--r-md);
}
.topic-card::after {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--lx-gold-3), var(--lx-cyan));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--lx-t) var(--lx-ease);
    border-radius: var(--r-pill);
}
.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--lx-sh-3);
    border-color: var(--lx-line-hot);
}
.topic-card:hover::after { transform: scaleY(1); }
.topic-card:hover .topic-title { color: var(--lx-gold); }
.topic-title { transition: color var(--lx-t) var(--lx-ease); }

.topic-card .avatar-md {
    border: 1.5px solid var(--lx-line-hot);
    transition: transform .5s var(--lx-bounce), box-shadow var(--lx-t) var(--lx-ease);
}
.topic-card:hover .avatar-md { transform: scale(1.06); box-shadow: 0 0 20px var(--lx-glow-gold); }

.topic-images .img-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: var(--r-sm);
    border: 1px solid var(--lx-line);
}
.topic-images .img-wrapper img {
    transition: transform .7s var(--lx-ease);
}
.topic-images .img-wrapper:hover img { transform: scale(1.09) rotate(.6deg); }
.topic-images .img-wrapper::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(200, 168, 110, .22), transparent 60%);
    opacity: 0;
    transition: opacity var(--lx-t) var(--lx-ease);
}
.topic-images .img-wrapper:hover::after { opacity: 1; }
.img-more {
    backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, .5);
    border: 1px solid var(--lx-line-hot);
}

/* 徽章 / 标签 */
.badge-top, .badge-essence, .type-badge, .tag-chip, .badge-assistant, .floor-num {
    transition: all var(--lx-t) var(--lx-ease);
}
.badge-top {
    background: linear-gradient(120deg, var(--lx-crimson), var(--lx-gold-2)) !important;
    color: #fff !important;
    box-shadow: 0 4px 14px -6px var(--lx-crimson);
}
.badge-essence {
    background: var(--gold-grad) !important;
    color: #20180C !important;
    box-shadow: 0 4px 14px -6px var(--lx-glow-gold);
}
.tag-chip:hover {
    border-color: var(--lx-line-hot) !important;
    background: var(--lx-glow-gold) !important;
    transform: translateY(-2px);
}
.badge-assistant {
    background: linear-gradient(120deg, var(--lx-cyan), var(--lx-violet)) !important;
    color: #0A0A0A !important;
    box-shadow: 0 4px 14px -6px var(--lx-glow-cyan);
}

/* ---------------------------------------------------------------------------
   7. 首页 —— Hero 重铸
   --------------------------------------------------------------------------- */
.hero-video-wrap {
    position: relative;
    min-height: 68vh;
    border-radius: 0 0 var(--r-xl) var(--r-xl);
    overflow: hidden;
    box-shadow: var(--lx-sh-3);
}
/* 定位/铺满由 inset + 100% 尺寸负责（不再用 transform 做居中），
   这里的 transform 只承担镜头缓推，避免覆盖掉基类的居中位移导致画面偏移。 */
.hero-video {
    inset: 0;
    width: 100%; height: 100%;
    min-width: 0; min-height: 0; max-width: none; max-height: none;
    object-fit: cover;
    object-position: center center;
    transform: scale(1.04);
    transform-origin: center center;
    animation: lxHeroZoom 26s var(--lx-ease-io) infinite alternate;
}
@keyframes lxHeroZoom {
    from { transform: scale(1.02) translate3d(0, 0, 0); }
    to   { transform: scale(1.10) translate3d(-1.4%, -1%, 0); }
}
.hero-overlay {
    background:
        radial-gradient(120% 80% at 50% 100%, var(--lx-void) 0%, transparent 62%),
        linear-gradient(180deg, rgba(0, 0, 0, .34) 0%, rgba(0, 0, 0, .58) 55%, var(--lx-void) 100%);
}
[data-theme="light"] .hero-overlay {
    background:
        radial-gradient(120% 80% at 50% 100%, #F5F0E6 0%, transparent 60%),
        linear-gradient(180deg, rgba(40, 34, 24, .30) 0%, rgba(40, 34, 24, .46) 55%, #F5F0E6 100%);
}
/* Hero 扫描线 */
.hero-video-wrap::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(232, 199, 126, .10), transparent);
    width: 30%;
    animation: lxScan 7s var(--lx-ease-io) infinite;
    pointer-events: none;
}
.hero-content { position: relative; z-index: 3; }
.hero-logo {
    animation: lxFadeDown .9s var(--lx-ease) both;
    filter: drop-shadow(0 12px 30px var(--lx-glow-gold));
}
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(38px, 7vw, 78px);
    font-weight: 700;
    letter-spacing: .16em;
    margin: var(--s-3) 0 var(--s-2);
    text-shadow: 0 8px 34px rgba(0, 0, 0, .5);
    animation: lxFadeUp .9s var(--lx-ease) .12s both;
}
.hero-subtitle {
    font-size: var(--fs-md);
    letter-spacing: .22em;
    opacity: .92;
    animation: lxFadeUp .9s var(--lx-ease) .24s both;
}
.hero-actions { animation: lxFadeUp .9s var(--lx-ease) .36s both; }

.btn-hero-primary {
    position: relative;
    border-radius: var(--r-pill);
    padding: 12px 30px;
    font-weight: 600;
    letter-spacing: .06em;
    background: linear-gradient(120deg, var(--lx-gold-2), var(--lx-gold-3) 50%, var(--lx-gold-2));
    background-size: 200% 100%;
    color: #1F170B;
    border: 1px solid rgba(255, 255, 255, .34);
    box-shadow: 0 16px 40px -12px var(--lx-glow-gold);
    overflow: hidden;
    transition: all var(--lx-t) var(--lx-ease);
}
[data-theme="dark"] .btn-hero-primary { color: #17100A; }
.btn-hero-primary:hover { background-position: 100% 0; transform: translateY(-3px); box-shadow: 0 22px 54px -14px var(--lx-glow-gold); }
.btn-hero-ghost {
    border-radius: var(--r-pill);
    padding: 12px 28px;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .42);
    background: rgba(255, 255, 255, .10);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: all var(--lx-t) var(--lx-ease);
}
.btn-hero-ghost:hover { background: rgba(255, 255, 255, .20); transform: translateY(-3px); border-color: var(--lx-gold-3); }

.hero-scroll-hint {
    position: absolute;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 4;
}
.hero-scroll-hint span {
    display: block;
    width: 22px; height: 36px;
    border: 1.5px solid rgba(255, 255, 255, .6);
    border-radius: var(--r-pill);
    position: relative;
}
.hero-scroll-hint span::after {
    content: "";
    position: absolute;
    top: 7px; left: 50%;
    transform: translateX(-50%);
    width: 3px; height: 7px;
    border-radius: var(--r-pill);
    background: var(--lx-gold-3);
    animation: lxScrollDot 1.8s var(--lx-ease-io) infinite;
}
@keyframes lxScrollDot {
    0%   { opacity: 0; transform: translate(-50%, 0); }
    40%  { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* Home 组件 */
.lx-ticker-wrap { overflow: hidden; position: relative; }
.lx-ticker-wrap::before,
.lx-ticker-wrap::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0;
    width: 60px;
    z-index: 2;
    pointer-events: none;
}
.lx-ticker-wrap::before { left: 0;  background: linear-gradient(90deg, var(--lx-void), transparent); }
.lx-ticker-wrap::after  { right: 0; background: linear-gradient(-90deg, var(--lx-void), transparent); }
.lx-ticker {
    display: flex;
    width: max-content;
    animation: lxMarquee 42s linear infinite;
}
.lx-ticker-wrap:hover .lx-ticker { animation-play-state: paused; }

.lx-board {
    position: relative;
    display: block;
    padding: var(--s-4) var(--s-3);
    border-radius: var(--r-md);
    border: 1px solid var(--lx-line);
    background: var(--lx-panel);
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    text-decoration: none;
    overflow: hidden;
    transition: transform var(--lx-t) var(--lx-ease), box-shadow var(--lx-t) var(--lx-ease), border-color var(--lx-t) var(--lx-ease);
}
.lx-board::before {
    content: "";
    position: absolute;
    inset: -40% -40% auto auto;
    width: 150px; height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--lx-glow-gold), transparent 68%);
    opacity: .0;
    transition: opacity var(--lx-t) var(--lx-ease), transform var(--lx-t-slow) var(--lx-ease);
}
.lx-board:hover {
    transform: translateY(-6px);
    border-color: var(--lx-line-hot);
    box-shadow: var(--lx-sh-3);
}
.lx-board:hover::before { opacity: 1; transform: translate(14px, -14px) scale(1.2); }
.lx-board-ico {
    width: 46px; height: 46px;
    display: grid; place-items: center;
    border-radius: var(--r-md);
    border: 1px solid var(--lx-line);
    background: linear-gradient(150deg, var(--lx-glow-gold), transparent 72%);
    margin-bottom: var(--s-3);
    transition: transform .5s var(--lx-bounce);
}
.lx-board:hover .lx-board-ico { transform: rotate(-8deg) scale(1.12); }
.lx-board-name { font-size: var(--fs-base); font-weight: 600; color: var(--lx-ink); }
.lx-board-desc {
    font-size: var(--fs-xs);
    color: var(--lx-mute);
    margin-top: 2px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.lx-board-meta {
    margin-top: var(--s-3);
    padding-top: var(--s-2);
    border-top: 1px dashed var(--lx-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--fs-xs);
    color: var(--lx-mute);
}
.lx-board-count { font-weight: 700; color: var(--lx-gold); font-size: var(--fs-md); }

/* 侧栏卡片细化 */
.sidebar-card { border-radius: var(--r-md); }
.sidebar-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--lx-ink);
}
.sidebar-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: var(--r-sm);
    text-decoration: none;
    transition: background var(--lx-t) var(--lx-ease), transform var(--lx-t) var(--lx-ease);
}
.sidebar-list-item:hover { background: var(--lx-glow-gold); transform: translateX(4px); }
.sidebar-rank {
    flex: 0 0 auto;
    width: 22px; height: 22px;
    display: grid; place-items: center;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    background: var(--lx-panel-soft);
    color: var(--lx-mute);
    border: 1px solid var(--lx-line);
}
.sidebar-rank-top {
    background: var(--gold-grad);
    color: #20180C;
    border-color: transparent;
    box-shadow: 0 4px 12px -6px var(--lx-glow-gold);
}
.stat-number {
    font-family: var(--font-display);
    font-weight: 700;
}
.stat-divider { border-left: 1px solid var(--lx-line); }

/* 奢华描边（保留 v4 的流光，同时补统称） */
.lux-border { border: 1px solid transparent; }

/* ---------------------------------------------------------------------------
   8. 帖子详情
   --------------------------------------------------------------------------- */
.topic-content {
    font-size: var(--fs-base);
    line-height: 1.9;
    color: var(--lx-ink-2);
}
.topic-content .inline-reply-img,
.inline-reply-img {
    max-width: 100%;
    border-radius: var(--r-md);
    border: 1px solid var(--lx-line);
    margin: var(--s-3) 0;
    transition: transform var(--lx-t) var(--lx-ease), box-shadow var(--lx-t) var(--lx-ease);
}
.inline-reply-img:hover { transform: scale(1.015); box-shadow: var(--lx-sh-2); }

.reply-item {
    border-radius: var(--r-md);
    padding: var(--s-3);
    border: 1px solid transparent;
    transition: background var(--lx-t) var(--lx-ease), border-color var(--lx-t) var(--lx-ease), transform var(--lx-t) var(--lx-ease);
}
.reply-item:hover {
    background: var(--lx-panel-soft);
    border-color: var(--lx-line);
}
.reply-children {
    border-left: 2px solid var(--lx-line-hot);
    padding-left: var(--s-3);
    background: var(--lx-panel-soft);
    border-radius: 0 var(--r-sm) var(--r-sm) 0;
}
.reply-editor textarea:focus {
    border-color: var(--lx-line-hot);
    box-shadow: 0 0 0 4px var(--lx-glow-gold);
}

/* 灯箱 */
#lightbox { backdrop-filter: blur(10px); animation: lxZoom .3s var(--lx-ease) both; }

/* ---------------------------------------------------------------------------
   9. 通用：面包屑 / 分页 / 页脚 / 返回顶部 / 空态
   --------------------------------------------------------------------------- */
.breadcrumb-line a { color: var(--lx-ink-2); }
.breadcrumb-line a:hover { color: var(--lx-gold); }
.breadcrumb-line .sep { opacity: .4; }

.pagination .page-link {
    border-radius: var(--r-pill) !important;
    margin: 0 3px;
    border-color: var(--lx-line);
    color: var(--lx-ink-2);
    transition: all var(--lx-t) var(--lx-ease);
}
.pagination .page-link:hover { transform: translateY(-2px); box-shadow: var(--lx-sh-1); }
.pagination .page-item.active .page-link {
    background: var(--gold-grad);
    border-color: transparent;
    box-shadow: 0 6px 18px -8px var(--lx-glow-gold);
    color: #20180C;
}
[data-theme="dark"] .pagination .page-item.active .page-link { color: #1A1206; }

.bbs-footer {
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--lx-line);
    background: var(--lx-panel);
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
}
.bbs-footer::before {
    content: "";
    position: absolute;
    top: -1px; left: 50%;
    transform: translateX(-50%);
    width: 180px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--lx-gold-3), transparent);
}
.footer-links a { transition: all var(--lx-t) var(--lx-ease); }
.footer-links a:hover { color: var(--lx-gold) !important; transform: translateY(-2px); display: inline-block; }

.lx-backtop {
    position: fixed;
    right: 22px; bottom: 22px;
    width: 46px; height: 46px;
    display: grid; place-items: center;
    border-radius: var(--r-full);
    border: 1px solid var(--lx-line-hot);
    background: var(--lx-panel-solid);
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    color: var(--lx-gold-3);
    cursor: pointer;
    z-index: 1400;
    opacity: 0;
    transform: translateY(16px) scale(.85);
    pointer-events: none;
    box-shadow: var(--lx-sh-2);
    transition: all var(--lx-t) var(--lx-ease);
}
.lx-backtop.show { opacity: 1; transform: none; pointer-events: auto; }
.lx-backtop:hover { transform: translateY(-4px); box-shadow: var(--lx-sh-3), 0 0 24px var(--lx-glow-gold); }

.empty-state {
    border: 1px dashed var(--lx-line);
    border-radius: var(--r-lg);
    background: var(--lx-panel-soft);
}

/* Cookie 条 */
.cookie-consent {
    position: fixed !important;
    bottom: 0; left: 0; right: 0;
    z-index: 1500;
    background: var(--lx-panel-solid);
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    border-top: 1px solid var(--lx-line-hot);
    animation: lxFadeUp .6s var(--lx-ease) both;
}

/* ---------------------------------------------------------------------------
   10. 后台：与前台同一套语言
   --------------------------------------------------------------------------- */
.admin-sidebar {
    background: var(--lx-panel-solid) !important;
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    border-right: 1px solid var(--lx-line) !important;
    box-shadow: var(--lx-sh-3);
    transition: width var(--lx-t-slow) var(--lx-ease), transform var(--lx-t-slow) var(--lx-ease);
}
.admin-nav-link {
    border-radius: var(--r-md) !important;
    transition: all var(--lx-t) var(--lx-ease);
    position: relative;
    overflow: hidden;
}
.admin-nav-link::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, var(--lx-glow-gold), transparent 70%);
    opacity: 0;
    transition: opacity var(--lx-t) var(--lx-ease);
}
.admin-nav-link:hover::after { opacity: 1; }
.admin-nav-link.active { box-shadow: inset 3px 0 0 var(--lx-gold-3); }
.admin-stat-card {
    border: 1px solid var(--lx-line) !important;
    background: var(--lx-panel) !important;
    backdrop-filter: var(--lx-glass);
    -webkit-backdrop-filter: var(--lx-glass);
    border-radius: var(--r-md) !important;
    transition: transform var(--lx-t) var(--lx-ease), box-shadow var(--lx-t) var(--lx-ease);
}
.admin-stat-card:hover { transform: translateY(-4px); box-shadow: var(--lx-sh-3); }

/* ---------------------------------------------------------------------------
   11. 响应式 & 可访问性
   --------------------------------------------------------------------------- */
@media (max-width: 991px) {
    .lx-grid { background-size: 56px 56px; }
    .hero-video-wrap { min-height: 58vh; border-radius: 0 0 var(--r-lg) var(--r-lg); }
}
@media (max-width: 767px) {
    .lx-atmos i { filter: blur(64px); }
    .bbs-navbar { border-radius: var(--r-md); }
    .lx-backtop { right: 14px; bottom: 14px; width: 42px; height: 42px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
        scroll-behavior: auto !important;
    }
    [data-lx] { opacity: 1 !important; }
}

/* 打印友好 */
@media print {
    .lx-atmos, .lx-grid, .lx-grain, .lx-progress, .lx-backtop,
    .hero-video-wrap, .cookie-consent { display: none !important; }
}