/* ==========================================================================
   LearnNest 账号页三端主题（v4）
   admin  = 深空指挥台（管理后台 / LearnNest_Web）
   teacher= 暖阳教研（教师端 / LearnNest_Teacher）
   student= 元气校园（学生端 / LearnNest_Student）
   骨架沿用 LeptonX account 布局：54rem 毛玻璃双栏卡；表单/验证码三端共享。
   ========================================================================== */
:root {
    --lpx-primary: #355dff;
    --lpx-primary-rgb: 53, 93, 255;
    --lpx-brand: #f72585;
}

html, body { height: 100%; }

/* ---------- 区域与背景（默认 = admin 深色，被三套主题覆盖） ---------- */
.lpx-login-area {
    min-height: 100vh;
    position: relative;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    overflow-x: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 0;
}

.lpx-login-area .lpx-login-bg {
    position: fixed;
    inset: 0;
    width: 100%;
    min-height: 100vh;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: 0;
}

/* 漂浮装饰（每端重定义） */
.lnx-deco {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    opacity: .55;
    filter: blur(46px);
}
.lnx-deco-1 { width: 34vw; height: 34vw; top: -12vw; left: -10vw; }
.lnx-deco-2 { width: 28vw; height: 28vw; bottom: -10vw; right: -8vw; }
.lnx-deco-3 { width: 16vw; height: 16vw; top: 58%; left: 8%; opacity: .4; }

/* LeptonX Lite Account 布局适配：展开外层容器，隐藏默认 Logo/租户卡片 */
.abp-account-layout .lpx-content-container { background-color: transparent; }
.abp-account-layout .lpx-content { padding: 0 !important; max-width: none !important; }
.abp-account-layout .lpx-content > .container,
.abp-account-layout .lpx-content > div > .container {
    max-width: none !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}
.abp-account-layout .lpx-content .container > .row { margin: 0 !important; }
.abp-account-layout .lpx-content .container > .row > [class*="col"] {
    width: 100% !important;
    max-width: none !important;
    flex: 1 1 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}
.abp-account-layout .lpx-logo-container,
.abp-account-layout .lpx-content .card:has(#Input_Name),
.abp-account-layout .lpx-content .card:has(#LanguageDropdown),
.abp-account-layout .card:has(#AbpTenantSwitchLink),
.abp-account-layout .card:has(#LanguageDropdown) { display: none !important; }

/* body 背景随端主题（默认深空，避免 LeptonX 深色 body 露黑边） */
body.abp-account-layout { background: linear-gradient(160deg, #0a1120 0%, #0d1a33 55%, #0b1f3a 100%); }
body.abp-account-layout:has(.lnx-portal-teacher) {
    background: linear-gradient(150deg, #f0fdf9 0%, #dcf3ec 48%, #fdf3e3 100%);
}
body.abp-account-layout:has(.lnx-portal-student) {
    background: linear-gradient(150deg, #e0f2fe 0%, #ede9fe 52%, #ffe4e6 100%);
}

/* ---------- 居中毛玻璃容器（公共） ---------- */
.lpx-layout-login {
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    overflow: hidden;
}

.lpx-layout-login .card { border: none !important; background: transparent !important; }
.lpx-layout-login .card-body { background: var(--lnx-panel); border-radius: 1rem; }

/* ---------- 左侧品牌区（公共） ---------- */
.lpx-login-nav { color: var(--lnx-hero-text); }
.lpx-login-nav h4, .lpx-login-nav h5 { color: var(--lnx-hero-heading); font-weight: 600; }
.lpx-login-nav p { color: var(--lnx-hero-text); }
.text-brand { color: var(--lnx-accent) !important; }

.lpx-login-nav .copyright-text { font-size: .8rem; color: var(--lnx-hero-muted); }
.lpx-login-nav .copyright-text a { color: var(--lnx-hero-muted) !important; }

/* 端别标签（胶囊） */
.lnx-portal-tag {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .12em;
    padding: .28rem .85rem;
    border-radius: 2rem;
    color: var(--lnx-accent);
    background: var(--lnx-accent-soft);
    border: 1px solid var(--lnx-accent-border);
    width: fit-content;
}
.lnx-portal-tag::before {
    content: "";
    width: .45rem; height: .45rem;
    border-radius: 50%;
    background: var(--lnx-accent);
    box-shadow: 0 0 8px var(--lnx-accent);
}

/* 端别徽章列表 */
.lnx-badge-list li {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-size: .92rem;
    color: var(--lnx-hero-text);
    padding: .42rem 0;
    border-bottom: 1px dashed var(--lnx-badge-divider);
}
.lnx-badge-list li:last-child { border-bottom: none; }
.lnx-badge-list i {
    width: 1.9rem; height: 1.9rem;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: .6rem;
    background: var(--lnx-accent-soft);
    color: var(--lnx-accent);
    font-size: .8rem;
    flex: none;
}

/* ---------- Logo：六边形徽标（每端配色） ---------- */
.lnx-logo {
    width: 3em; height: 3em;
    border-radius: 30%;
    background: var(--lnx-logo-bg);
    box-shadow: var(--lnx-logo-shadow);
    display: flex; align-items: center; justify-content: center;
    color: var(--lnx-logo-fg);
    font-weight: 800; font-size: .8em; letter-spacing: 1px;
    flex: none;
    position: relative;
}
.lnx-logo::after {
    content: "";
    position: absolute; inset: .28em;
    border-radius: 22%;
    border: 1.5px solid var(--lnx-logo-ring);
}

/* ---------- 标题 / 表单（公共骨架，颜色走变量） ---------- */
.lpx-main-title { font-size: 1.75em !important; font-weight: 600; color: var(--lnx-title); }

.lpx-layout-login h5 { color: var(--lnx-title); font-weight: 500; }
.lpx-layout-login h5 a { font-weight: 500; }

.lpx-layout-login .form-floating > .form-control {
    background-color: var(--lnx-input-bg);
    border: 1px solid var(--lnx-input-border);
    border-radius: .6rem;
    color: var(--lnx-input-text);
    padding-top: 1.35rem;
    padding-bottom: .55rem;
    transition: border-color .15s, box-shadow .15s, background-color .15s;
}
.lpx-layout-login .form-floating > label { color: var(--lnx-input-label); padding-top: 1rem; }
.lpx-layout-login .form-floating > .form-control:focus {
    background-color: var(--lnx-input-focus-bg);
    border-color: var(--lnx-accent);
    box-shadow: 0 0 0 .25rem var(--lnx-focus-ring);
}
.lpx-layout-login .form-control::placeholder { color: transparent; }

.lpx-layout-login .form-check-input:checked {
    background-color: var(--lnx-accent);
    border-color: var(--lnx-accent);
}
.lpx-layout-login .form-check-input:focus {
    border-color: var(--lnx-accent);
    box-shadow: 0 0 0 .2rem var(--lnx-focus-ring);
}
.lpx-layout-login .form-check-label { color: var(--lnx-hero-text); }

.lpx-layout-login a:not(.btn) { color: var(--lnx-accent); text-decoration: none; font-weight: 500; }
.lpx-layout-login a:not(.btn):hover { text-decoration: underline; filter: brightness(1.08); }

/* 主按钮（每端渐变） */
.lpx-layout-login .btn-primary {
    background-image: var(--lnx-btn-grad);
    border: none;
    border-radius: .75rem;
    font-weight: 600;
    letter-spacing: .05em;
    box-shadow: var(--lnx-btn-shadow);
    transition: transform .12s, box-shadow .15s, filter .15s;
}
.lpx-layout-login .btn-primary:hover, .lpx-layout-login .btn-primary:focus {
    background-image: var(--lnx-btn-grad);
    filter: brightness(1.06);
    transform: translateY(-1px);
    box-shadow: var(--lnx-btn-shadow-hover);
}
.lpx-layout-login .btn-primary:active { transform: translateY(0); }

/* 第三方登录按钮 */
.lpx-external-btn {
    display: flex; justify-content: center; align-items: center;
    width: 100%;
    background-color: var(--lnx-input-bg);
    border: 1px solid var(--lnx-input-border);
    border-radius: 2rem;
    color: var(--lnx-input-text);
    padding: .55rem 1rem;
    margin-bottom: .5rem;
    font-weight: 500;
}
.lpx-external-btn:hover { border-color: var(--lnx-accent); color: var(--lnx-accent); }

/* 密码可见性 */
.lnx-show-pass {
    position: absolute; top: 50%; right: 1rem;
    transform: translateY(-50%);
    color: var(--lnx-input-label);
    background: none; border: none; padding: 0; z-index: 5;
}
.lnx-show-pass:hover { color: var(--lnx-accent); }

/* SVG 图形验证码 */
.lnx-captcha-img {
    height: 58px; width: 100%;
    border-radius: .6rem;
    border: 1px solid var(--lnx-input-border);
    background: #fff;
    cursor: pointer;
}

/* 滑动验证码 */
.lnx-slide-bar { width: 100%; height: 42px; margin-top: 10px; position: relative; user-select: none; }
.lnx-slide-fill { position: absolute; left: 0; top: 0; height: 100%; width: 0; background: var(--lnx-accent-soft); border-radius: .5rem 0 0 .5rem; }
.lnx-slide-handle {
    position: absolute; left: 0; top: 0; width: 46px; height: 100%;
    background: #fff; border: 1px solid var(--lnx-input-border); border-radius: .5rem;
    color: var(--lnx-accent);
    display: flex; align-items: center; justify-content: center; cursor: grab;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .15);
}
.lnx-slide-text { position: absolute; left: 0; top: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: var(--lnx-input-label); font-size: 13px; }

.lpx-layout-login .text-danger { font-size: .85rem; }

/* ---------- 注册页：密码强度条 ---------- */
.lnx-pwd-meter { display: flex; gap: .35rem; }
.lnx-pwd-seg {
    flex: 1; height: .3rem;
    border-radius: 1rem;
    background: var(--lnx-input-border);
    transition: background-color .2s;
}
.lnx-pwd-seg.on.level-1 { background: #ef4444; }
.lnx-pwd-seg.on.level-2 { background: #f59e0b; }
.lnx-pwd-seg.on.level-3 { background: #10b981; }
.lnx-pwd-seg.on.level-4 { background: #059669; }
.lnx-pwd-seg:nth-child(2).on.level-3, .lnx-pwd-seg:nth-child(2).on.level-4 { background: #f59e0b; }
.lnx-pwd-seg:nth-child(3).on.level-4 { background: #10b981; }
.lnx-pwd-seg:nth-child(4).on { background: #059669; }

.lnx-pwd-hint { font-size: .78rem; color: var(--lnx-input-label); }
.lnx-pwd-hint.strength-3 { color: #10b981; }
.lnx-pwd-hint.strength-4 { color: #059669; }
.lnx-pwd-hint.strength-1 { color: #ef4444; }

.lnx-terms {
    font-size: .8rem;
    color: var(--lnx-hero-text);
    background: var(--lnx-accent-soft);
    border: 1px dashed var(--lnx-accent-border);
    border-radius: .6rem;
    padding: .55rem .8rem;
}
.lnx-terms i { color: var(--lnx-accent); }

/* ==========================================================================
   主题一：admin 深空指挥台
   ========================================================================== */
.lnx-portal-admin {
    --lnx-accent: #38bdf8;
    --lnx-accent-soft: rgba(56, 189, 248, .12);
    --lnx-accent-border: rgba(56, 189, 248, .35);
    --lnx-focus-ring: rgba(56, 189, 248, .22);
    --lnx-panel: rgba(15, 28, 52, .55);
    --lnx-title: #f1f5f9;
    --lnx-hero-heading: #f8fafc;
    --lnx-hero-text: #b6c6dd;
    --lnx-hero-muted: #7c90ab;
    --lnx-badge-divider: rgba(148, 178, 215, .18);
    --lnx-input-bg: rgba(148, 178, 215, .09);
    --lnx-input-border: rgba(148, 178, 215, .22);
    --lnx-input-text: #e6edf6;
    --lnx-input-label: #8299b5;
    --lnx-input-focus-bg: rgba(10, 20, 40, .6);
    --lnx-btn-grad: linear-gradient(135deg, #38bdf8 0%, #355dff 100%);
    --lnx-btn-shadow: 0 8px 22px rgba(53, 93, 255, .35);
    --lnx-btn-shadow-hover: 0 10px 28px rgba(53, 93, 255, .5);
    --lnx-logo-bg: linear-gradient(135deg, #0ea5e9, #355dff);
    --lnx-logo-fg: #fff;
    --lnx-logo-ring: rgba(255, 255, 255, .5);
    --lnx-logo-shadow: 0 6px 20px rgba(14, 165, 233, .45);

    background:
        radial-gradient(1100px 520px at 85% -10%, rgba(56, 189, 248, .16), transparent 60%),
        radial-gradient(900px 500px at -10% 110%, rgba(53, 93, 255, .18), transparent 60%),
        linear-gradient(160deg, #0a1120 0%, #0d1a33 55%, #0b1f3a 100%);
    color: #e6edf6;
}
.lnx-portal-admin .lpx-login-bg {
    background-image:
        linear-gradient(rgba(148, 178, 215, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 178, 215, .05) 1px, transparent 1px);
    background-size: 44px 44px, 44px 44px;
}
.lnx-portal-admin .lnx-deco-1 { background: radial-gradient(circle, rgba(56, 189, 248, .5), transparent 70%); }
.lnx-portal-admin .lnx-deco-2 { background: radial-gradient(circle, rgba(53, 93, 255, .55), transparent 70%); }
.lnx-portal-admin .lnx-deco-3 { background: radial-gradient(circle, rgba(125, 211, 252, .35), transparent 70%); }
.lnx-portal-admin .lpx-layout-login {
    background-color: rgba(10, 20, 40, .55);
    border: 1px solid rgba(148, 178, 215, .16);
    box-shadow: 0 2rem 4rem rgba(2, 8, 20, .6);
}
.lnx-portal-admin .lpx-login-nav {
    background: linear-gradient(160deg, rgba(30, 58, 105, .55), rgba(17, 34, 64, .65));
    border-radius: 1rem;
    border: 1px solid rgba(148, 178, 215, .14);
    margin: .5rem;
}

/* ==========================================================================
   主题二：teacher 暖阳教研
   ========================================================================== */
.lnx-portal-teacher {
    --lnx-accent: #0d9488;
    --lnx-accent-soft: rgba(13, 148, 136, .1);
    --lnx-accent-border: rgba(13, 148, 136, .3);
    --lnx-focus-ring: rgba(13, 148, 136, .18);
    --lnx-panel: rgba(255, 255, 255, .82);
    --lnx-title: #134e4a;
    --lnx-hero-heading: #0f766e;
    --lnx-hero-text: #446b64;
    --lnx-hero-muted: #6b948c;
    --lnx-badge-divider: rgba(13, 148, 136, .16);
    --lnx-input-bg: #f0fdfa;
    --lnx-input-border: rgba(13, 148, 136, .18);
    --lnx-input-text: #113b36;
    --lnx-input-label: #74a39b;
    --lnx-input-focus-bg: #ffffff;
    --lnx-btn-grad: linear-gradient(135deg, #2dd4bf 0%, #0d9488 100%);
    --lnx-btn-shadow: 0 8px 22px rgba(13, 148, 136, .3);
    --lnx-btn-shadow-hover: 0 10px 26px rgba(13, 148, 136, .42);
    --lnx-logo-bg: linear-gradient(135deg, #2dd4bf, #0f766e);
    --lnx-logo-fg: #fff;
    --lnx-logo-ring: rgba(255, 255, 255, .55);
    --lnx-logo-shadow: 0 6px 18px rgba(13, 148, 136, .4);

    background:
        radial-gradient(900px 460px at 88% -8%, rgba(245, 158, 11, .18), transparent 60%),
        radial-gradient(820px 480px at -6% 106%, rgba(45, 212, 191, .22), transparent 60%),
        linear-gradient(150deg, #f0fdf9 0%, #dcf3ec 48%, #fdf3e3 100%);
    color: #134e4a;
}
.lnx-portal-teacher .lpx-login-bg {
    background-image:
        radial-gradient(closest-side at 18% 22%, rgba(45, 212, 191, .14), transparent),
        radial-gradient(closest-side at 78% 72%, rgba(245, 158, 11, .12), transparent);
}
.lnx-portal-teacher .lnx-deco-1 { background: radial-gradient(circle, rgba(45, 212, 191, .45), transparent 70%); opacity: .5; }
.lnx-portal-teacher .lnx-deco-2 { background: radial-gradient(circle, rgba(251, 191, 36, .4), transparent 70%); opacity: .45; }
.lnx-portal-teacher .lnx-deco-3 { background: radial-gradient(circle, rgba(153, 246, 228, .6), transparent 70%); opacity: .5; }
.lnx-portal-teacher .lpx-layout-login {
    background-color: rgba(255, 255, 255, .6);
    border: 1px solid rgba(13, 148, 136, .14);
    box-shadow: 0 1.8rem 3.4rem rgba(19, 78, 74, .16);
}
.lnx-portal-teacher .lpx-login-nav {
    background: linear-gradient(165deg, rgba(204, 251, 241, .75), rgba(240, 253, 250, .55));
    border-radius: 1rem;
    border: 1px solid rgba(13, 148, 136, .12);
    margin: .5rem;
}

/* ==========================================================================
   主题三：student 元气校园
   ========================================================================== */
.lnx-portal-student {
    --lnx-accent: #f97316;
    --lnx-accent-soft: rgba(249, 115, 22, .1);
    --lnx-accent-border: rgba(249, 115, 22, .32);
    --lnx-focus-ring: rgba(249, 115, 22, .18);
    --lnx-panel: rgba(255, 255, 255, .85);
    --lnx-title: #4c1d95;
    --lnx-hero-heading: #7c3aed;
    --lnx-hero-text: #6b5f8f;
    --lnx-hero-muted: #a08fc4;
    --lnx-badge-divider: rgba(124, 58, 237, .14);
    --lnx-input-bg: #faf7ff;
    --lnx-input-border: rgba(124, 58, 237, .16);
    --lnx-input-text: #3b2a63;
    --lnx-input-label: #a08fc4;
    --lnx-input-focus-bg: #ffffff;
    --lnx-btn-grad: linear-gradient(135deg, #fb923c 0%, #ec4899 100%);
    --lnx-btn-shadow: 0 8px 22px rgba(236, 72, 153, .32);
    --lnx-btn-shadow-hover: 0 10px 26px rgba(236, 72, 153, .45);
    --lnx-logo-bg: linear-gradient(135deg, #fb923c, #ec4899);
    --lnx-logo-fg: #fff;
    --lnx-logo-ring: rgba(255, 255, 255, .55);
    --lnx-logo-shadow: 0 6px 18px rgba(236, 72, 153, .4);

    background:
        radial-gradient(900px 460px at 90% -10%, rgba(139, 92, 246, .2), transparent 60%),
        radial-gradient(760px 420px at -8% 108%, rgba(249, 115, 22, .18), transparent 60%),
        linear-gradient(150deg, #e0f2fe 0%, #ede9fe 52%, #ffe4e6 100%);
    color: #4c1d95;
}
.lnx-portal-student .lpx-login-bg {
    background-image:
        radial-gradient(closest-side at 22% 68%, rgba(236, 72, 153, .1), transparent),
        radial-gradient(closest-side at 72% 18%, rgba(139, 92, 246, .12), transparent);
}
.lnx-portal-student .lnx-deco-1 { background: radial-gradient(circle, rgba(139, 92, 246, .4), transparent 70%); opacity: .5; }
.lnx-portal-student .lnx-deco-2 { background: radial-gradient(circle, rgba(251, 146, 60, .42), transparent 70%); opacity: .5; }
.lnx-portal-student .lnx-deco-3 { background: radial-gradient(circle, rgba(244, 114, 182, .35), transparent 70%); opacity: .5; }
.lnx-portal-student .lpx-layout-login {
    background-color: rgba(255, 255, 255, .66);
    border: 1px solid rgba(124, 58, 237, .12);
    box-shadow: 0 1.8rem 3.4rem rgba(76, 29, 149, .18);
}
.lnx-portal-student .lpx-login-nav {
    background: linear-gradient(165deg, rgba(243, 232, 255, .8), rgba(255, 241, 242, .6));
    border-radius: 1rem;
    border: 1px solid rgba(124, 58, 237, .1);
    margin: .5rem;
}
.lnx-portal-student .lpx-layout-login .btn-primary { border-radius: 2rem; }

/* ---------- 移动端 ---------- */
@media (max-width: 767.98px) {
    .lpx-login-area { padding: 0 0 2rem; }
    .lpx-layout-login {
        background-color: var(--lnx-panel);
        backdrop-filter: blur(6px);
        width: calc(100% - 1.5rem) !important;
        margin-top: 1rem;
    }
    .lnx-deco { filter: blur(30px); }
}

/* ==========================================================================
   v4.1 polish：动效与质感升级（三端共享）
   ========================================================================== */
@keyframes lnx-enter {
    from { opacity: 0; transform: translateY(14px) scale(.985); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes lnx-float {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to   { transform: translate3d(3vw, -2.5vh, 0) scale(1.06); }
}
@keyframes lnx-sheen {
    from { transform: translateX(-120%) skewX(-18deg); }
    to   { transform: translateX(240%) skewX(-18deg); }
}

/* 卡片入场 */
.lpx-layout-login { animation: lnx-enter .55s cubic-bezier(.2, .8, .2, 1) both; }

/* 卡片顶部高光线 */
.lpx-layout-login::before {
    content: "";
    position: absolute; top: 0; left: 12%; right: 12%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--lnx-accent), transparent);
    opacity: .55; z-index: 2;
}

/* 装饰光斑缓慢漂浮 */
.lnx-deco { animation: lnx-float 16s ease-in-out infinite alternate; }
.lnx-deco-2 { animation-duration: 21s; animation-direction: alternate-reverse; }
.lnx-deco-3 { animation-duration: 13s; }

/* 品牌区入场层次 */
.lpx-login-nav .lnx-logo { animation: lnx-enter .65s .05s cubic-bezier(.2, .8, .2, 1) both; }
.lpx-login-nav .lnx-portal-tag { animation: lnx-enter .65s .12s cubic-bezier(.2, .8, .2, 1) both; }
.lpx-login-nav h4 { animation: lnx-enter .65s .18s cubic-bezier(.2, .8, .2, 1) both; }
.lpx-login-nav p { animation: lnx-enter .65s .24s cubic-bezier(.2, .8, .2, 1) both; }
.lpx-login-nav .lnx-badge-list { animation: lnx-enter .65s .3s cubic-bezier(.2, .8, .2, 1) both; }

/* Hero 标题渐变文字 */
.lpx-login-nav h4 {
    background: var(--lnx-hero-grad, none);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: .01em;
    line-height: 1.25;
    white-space: nowrap;            /* 单行大字，不换行 */
    font-size: clamp(1.05rem, 1.6vw, 1.3rem);
    max-width: 100%;
    overflow: hidden;
    text-overflow: clip;
}

/* 徽章 hover 微交互 */
.lnx-badge-list li {
    transition: transform .18s cubic-bezier(.2, .8, .2, 1), background-color .18s;
    border-radius: .5rem;
    padding-inline: .35rem;
    margin-inline: -.35rem;
}
.lnx-badge-list li:hover { transform: translateX(4px); background: var(--lnx-accent-soft); }
.lnx-badge-list li:hover i { box-shadow: 0 0 0 4px var(--lnx-focus-ring); }
.lnx-badge-list i { transition: box-shadow .18s; }

/* 主按钮：光泽扫过 */
.lpx-layout-login .btn-primary { position: relative; overflow: hidden; }
.lpx-layout-login .btn-primary::after {
    content: "";
    position: absolute; top: 0; bottom: 0; left: 0;
    width: 40%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .35), transparent);
    transform: translateX(-120%) skewX(-18deg);
    pointer-events: none;
}
.lpx-layout-login .btn-primary:hover::after { animation: lnx-sheen .7s ease-out; }

/* 输入框与验证码过渡曲线统一 */
.lpx-layout-login .form-floating > .form-control,
.lnx-captcha-img, .lpx-external-btn, .lnx-show-pass, .lnx-slide-handle {
    transition-timing-function: cubic-bezier(.2, .8, .2, 1);
}
.lpx-layout-login .form-floating > .form-control:hover { border-color: var(--lnx-accent-border); }

/* 版权小字 */
.lpx-login-nav .copyright-text { letter-spacing: .04em; }

/* Hero 渐变文字颜色（每端） */
.lnx-portal-admin   .lpx-login-nav h4 { --lnx-hero-grad: linear-gradient(100deg, #f8fafc 20%, #7dd3fc 80%); }
.lnx-portal-teacher .lpx-login-nav h4 { --lnx-hero-grad: linear-gradient(100deg, #0f766e 25%, #b45309 85%); }
.lnx-portal-student .lpx-login-nav h4 { --lnx-hero-grad: linear-gradient(100deg, #7c3aed 25%, #db2777 85%); }

/* ---------- 简约化：收敛装饰与动效密度 ---------- */
/* 描述文案弱化 */
.lpx-login-nav p { font-size: .88rem; opacity: .92; }
/* 光斑透明度整体下调 */
.lnx-deco { opacity: .35; }
.lnx-portal-admin .lnx-deco-1 { opacity: .3; }
.lnx-portal-admin .lnx-deco-2 { opacity: .32; }
.lnx-portal-teacher .lnx-deco-1, .lnx-portal-teacher .lnx-deco-2 { opacity: .3; }
.lnx-portal-student .lnx-deco-1, .lnx-portal-student .lnx-deco-2 { opacity: .3; }
/* admin 网格线更淡，更素净 */
.lnx-portal-admin .lpx-login-bg { opacity: .6; }
/* 浮动动画放缓、幅度减弱 */
.lnx-deco { animation-duration: 26s; }
.lnx-deco-2 { animation-duration: 32s; }
.lnx-deco-3 { animation-duration: 21s; }

/* 尊重系统减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
    .lpx-layout-login, .lnx-deco,
    .lpx-login-nav .lnx-logo, .lpx-login-nav .lnx-portal-tag,
    .lpx-login-nav h4, .lpx-login-nav p, .lpx-login-nav .lnx-badge-list {
        animation: none;
    }
}