/* ==========================================================================
   登录 / 注册「左右滑动双面板」（neu-auth-dual）
   --------------------------------------------------------------------------
   作用范围：仅 user_login.cshtml（根容器 #vuediv 同时带 class="neu-auth na-dual"）
   依赖：neu-auth.css（提供输入框/按钮/页脚的新拟态基础样式），本文件在它之后引入

   设计原则：
     · 只做视觉 + 面板布局，不改任何共享 JS（User_Verify.js / Common.js / WapPage.js 一行未动）
     · 所有选择器限定在 .neu-auth.na-dual 下 ⇒ 不影响其他页面；回滚 = 删掉 .cshtml 里那一行 link
     · 配色沿用品牌红 #f42424 → #d81e1e
   ========================================================================== */

/* ---------- 作用域内统一 border-box ----------
   ⚠️ 本项目**没有全局 box-sizing:border-box**（public.css 未设）。
   双面板靠 width:50% + padding 做两栏，若按 content-box 计算会整体宽出 80px
   —— 实测后果：登录面板的表单溢出一半、被红色覆盖层盖住（按钮被切、验证码换行）。
   这里限定在 .neu-auth.na-dual 内统一，避免影响其他页面。
   （原 neu-auth.css 里 .login_txt 自己写了 border-box，所以单栏版没暴露这个问题） */
.neu-auth.na-dual,
.neu-auth.na-dual *,
.neu-auth.na-dual *::before,
.neu-auth.na-dual *::after { box-sizing: border-box; }

/* ---------- 舞台：整张卡片；高度由 JS 按「当前显示的面板内容」重算并带过渡 ---------- */
.neu-auth.na-dual .login_body {
    align-items: flex-start;
    padding: 24px 20px 52px;
    background: var(--na-bg);
}

.neu-auth.na-dual .na-stage {
    position: relative;
    width: 960px;
    max-width: 100%;
    height: 470px;
    margin: 0 auto;
    background: var(--na-surface);
    border-radius: var(--na-radius);
    overflow: hidden;
    box-shadow: -12px -12px 24px var(--na-light), 12px 12px 24px var(--na-dark);
    transition: height .6s cubic-bezier(.4, 0, .2, 1);
}

/* 头部只留 logo：切换入口由「覆盖层按钮 / 面板内文字链接」承担，避免同一页出现两个注册入口
   （.title / .tips 想恢复：把下面这条 display:none 去掉即可） */
.neu-auth.na-dual .login_top span.title,
.neu-auth.na-dual .login_top p.tips { display: none; }
.neu-auth.na-dual .login_top { height: 84px; }
.neu-auth.na-dual .login_top a.img { height: 84px; }

/* ---------- 头部布局：左 logo + 右语言切换，宽度与卡片对齐 ----------
   ⚠️ .login_top_bg 与 .login_top 原本都是 overflow:hidden，会把下拉菜单裁掉 ⇒ 必须放开 */
.neu-auth.na-dual .login_top_bg { overflow: visible; }
.neu-auth.na-dual .login_top {
    width: 960px;              /* 与 .na-stage 同宽 ⇒ logo 与卡片左缘对齐、切换器与右缘对齐 */
    max-width: 100%;
    display: flex;
    flex-direction: row;       /* 必须显式声明：否则会继承移动端规则里的 column */
    align-items: center;
    justify-content: space-between;
    overflow: visible;
}

/* ---------- 语言 / 国家切换 ---------- */
.neu-auth.na-dual .na-lang { position: relative; flex: 0 0 auto; }

.neu-auth.na-dual .na-lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 0 15px;
    border-radius: 999px;
    background: var(--na-surface);
    color: var(--na-text);
    font-size: 13px;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    box-shadow: -4px -4px 10px var(--na-light), 4px 4px 10px var(--na-dark);
    transition: box-shadow .2s, color .2s;
}
.neu-auth.na-dual .na-lang-btn:hover { color: var(--na-red); }
.neu-auth.na-dual .na-lang-btn:active,
.neu-auth.na-dual .na-lang.na-open .na-lang-btn {
    box-shadow: inset -3px -3px 8px var(--na-light), inset 3px 3px 8px var(--na-dark);
}
.neu-auth.na-dual .na-lang-btn svg { width: 16px; height: 16px; flex: 0 0 16px; }
.neu-auth.na-dual .na-caret {
    width: 0;
    height: 0;
    margin-left: 2px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform .2s;
}
.neu-auth.na-dual .na-lang.na-open .na-caret { transform: rotate(180deg); }

.neu-auth.na-dual .na-lang-list {
    position: absolute;
    right: 0;
    top: 48px;
    z-index: 80;
    min-width: 176px;
    max-height: 300px;
    overflow-y: auto;
    margin: 0;
    padding: 6px 0;
    list-style: none;
    border-radius: 14px;
    background: var(--na-surface);
    box-shadow: -8px -8px 20px var(--na-light), 8px 8px 20px var(--na-dark);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity .2s, transform .2s, visibility .2s;
}
.neu-auth.na-dual .na-lang.na-open .na-lang-list {
    opacity: 1;
    visibility: visible;
    transform: none;
}
.neu-auth.na-dual .na-lang-list li { list-style: none; }
.neu-auth.na-dual .na-lang-list li a {
    display: block;
    padding: 9px 16px;
    color: var(--na-text);
    font-size: 13px;
    line-height: 1.4;
    white-space: nowrap;
    cursor: pointer;
    transition: background .15s, color .15s;
}
.neu-auth.na-dual .na-lang-list li a:hover { background: rgba(244, 36, 36, .09); color: var(--na-red); }

/* ---------- 两个表单面板（各占一半，叠在同一位置） ---------- */
.neu-auth.na-dual .na-form {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    padding: 32px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all .6s cubic-bezier(.4, 0, .2, 1);
    /* ⚠️ 设计稿里隐藏的一侧只靠 opacity，透明层仍可被点到 ⇒ 这里显式关掉指针事件 */
    pointer-events: none;
}

.neu-auth.na-dual .na-inner { width: 100%; }

.neu-auth.na-dual .na-login { opacity: 1; z-index: 2; pointer-events: auto; }
.neu-auth.na-dual .na-register { opacity: 0; z-index: 1; }

/* 激活态：登录面板滑到右半并淡出，注册面板滑到右半并淡入 */
.neu-auth.na-dual .na-stage.na-reg .na-login {
    transform: translateX(100%);
    opacity: 0;
    z-index: 1;
    pointer-events: none;
}
.neu-auth.na-dual .na-stage.na-reg .na-register {
    transform: translateX(100%);
    opacity: 1;
    z-index: 5;
    pointer-events: auto;
    animation: na-dual-show .6s;
}
@keyframes na-dual-show {
    0%, 49.99% { opacity: 0; z-index: 1; }
    50%, 100% { opacity: 1; z-index: 5; }
}

/* ---------- 面板内文案 ---------- */
.neu-auth.na-dual .na-form h1 {
    margin: 0 0 6px;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--na-text);
    text-align: center;
}
.neu-auth.na-dual .na-sub {
    margin: 0 0 20px;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--na-muted);
}

/* ---------- 覆盖层（红色滑动面板） ---------- */
.neu-auth.na-dual .na-overlay-wrap {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    overflow: hidden;
    z-index: 10;
    transition: transform .6s cubic-bezier(.4, 0, .2, 1);
}
.neu-auth.na-dual .na-stage.na-reg .na-overlay-wrap { transform: translateX(-100%); }

.neu-auth.na-dual .na-overlay {
    position: relative;
    left: -100%;
    width: 200%;
    height: 100%;
    color: #fff;
    background:
        radial-gradient(120% 90% at 15% 8%, rgba(255, 255, 255, .22), transparent 55%),
        radial-gradient(110% 80% at 88% 96%, rgba(0, 0, 0, .20), transparent 60%),
        linear-gradient(135deg, var(--na-red), var(--na-red-deep));
    transition: transform .6s cubic-bezier(.4, 0, .2, 1);
}
.neu-auth.na-dual .na-stage.na-reg .na-overlay { transform: translateX(50%); }

.neu-auth.na-dual .na-panel {
    position: absolute;
    top: 0;
    height: 100%;
    width: 50%;
    padding: 40px 38px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.neu-auth.na-dual .na-panel-left { transform: translateX(-20%); }
.neu-auth.na-dual .na-panel-right { right: 0; transform: translateX(0); }
.neu-auth.na-dual .na-stage.na-reg .na-panel-left { transform: translateX(0); }
.neu-auth.na-dual .na-stage.na-reg .na-panel-right { transform: translateX(20%); }

/* 角落弧形装饰线 */
.neu-auth.na-dual .na-panel::before,
.neu-auth.na-dual .na-panel::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}
.neu-auth.na-dual .na-panel::before { width: 230px; height: 230px; border: 2px solid rgba(255, 255, 255, .22); }
.neu-auth.na-dual .na-panel::after { width: 130px; height: 130px; border: 1.5px solid rgba(255, 255, 255, .14); }
.neu-auth.na-dual .na-panel-left::before { top: -84px; left: -84px; }
.neu-auth.na-dual .na-panel-left::after { bottom: -46px; right: 14px; }
.neu-auth.na-dual .na-panel-right::before { bottom: -84px; right: -84px; }
.neu-auth.na-dual .na-panel-right::after { top: -46px; left: 14px; }

.neu-auth.na-dual .na-panel h2 {
    margin: 0 0 14px;
    font-size: 25px;
    font-weight: 600;
    letter-spacing: .5px;
    color: #fff;
}
.neu-auth.na-dual .na-panel p {
    margin: 0 0 26px;
    max-width: 260px;
    font-size: 13.5px;
    line-height: 1.85;
    color: rgba(255, 255, 255, .92);
}

/* 覆盖层上的描边按钮 */
.neu-auth.na-dual .na-ghost {
    display: inline-block;
    padding: 12px 36px;
    border: 1.5px solid #fff;
    border-radius: 999px;
    color: #fff;
    font-size: 13.5px;
    letter-spacing: 3px;
    cursor: pointer;
    user-select: none;
    transition: background .22s ease, transform .22s ease;
}
.neu-auth.na-dual .na-ghost:hover { background: rgba(255, 255, 255, .16); transform: translateY(-1px); }
.neu-auth.na-dual .na-ghost:active { transform: translateY(0); }

/* ---------- 注册面板：纵向更紧凑，避免卡片被 8 项撑得过高 ---------- */
.neu-auth.na-dual .na-register .loginf_txt { height: 48px; }
.neu-auth.na-dual .na-register .loginf_txt i { height: 48px; line-height: 48px; font-size: 17px; }
.neu-auth.na-dual .na-register .login_txt { height: 48px; line-height: 48px; padding-left: 46px; }
.neu-auth.na-dual .na-register .loginf_box li { margin-bottom: 11px; }
.neu-auth.na-dual .na-register .loginf_box a.login_btn { height: 50px; line-height: 50px; font-size: 16px; }
.neu-auth.na-dual .na-register .verifyCode,
.neu-auth.na-dual .na-register .loginf_txt a.code { height: 48px; line-height: 48px; }

/* ---------- 验证码：按真实尺寸显示，绝不裁切 ----------
   真实验证码是 135×46（JPEG）；原 responsive.css 用 object-fit:cover 会把它切掉边缘。
   ⚠️ 输入框与图片必须并排 —— 这里沿用原实现的一左一右 float（不能改成 float:none，
      否则两者各占一行。border-box 生效后 246 + 142 = 388 < 400，正好排在一行） */
.neu-auth.na-dual .code_txt { float: left; width: calc(100% - 154px); padding: 0 14px; }
.neu-auth.na-dual .verifyCode {
    float: right;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 142px;
    height: 54px;
    overflow: visible;
}
.neu-auth.na-dual .verifyCode img {
    width: 135px;
    height: 46px;
    max-width: 100%;
    object-fit: contain;
}

/* ---------- 协议勾选：新拟态方块 ---------- */
.neu-auth.na-dual .loginf_check {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    font-size: 12.5px;
    line-height: 1.65;
    color: var(--na-muted);
}
.neu-auth.na-dual .loginf_check input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    flex: 0 0 17px;
    width: 17px;
    height: 17px;
    margin: 1px 0 0;
    border: none;
    border-radius: 5px;
    background: var(--na-surface);
    box-shadow: inset -3px -3px 7px var(--na-light), inset 3px 3px 7px var(--na-dark);
    cursor: pointer;
}
.neu-auth.na-dual .loginf_check input[type="checkbox"]:checked {
    background: linear-gradient(135deg, var(--na-red), var(--na-red-deep));
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12.5 4.5 4.5L19 7'/%3E%3C/svg%3E"),
                      linear-gradient(135deg, var(--na-red), var(--na-red-deep));
    background-repeat: no-repeat;
    background-position: center;
    background-size: 13px;
}
.neu-auth.na-dual .loginf_check label { color: var(--na-muted); font-size: 12.5px; cursor: pointer; }
.neu-auth.na-dual .loginf_check a { color: var(--na-red); }

/* ---------- 移动端用的文字切换入口（桌面隐藏） ---------- */
.neu-auth.na-dual .na-switch { display: none; }
/* 桌面端整条 li 一起隐藏：否则它仍占 li 的 margin，把面板撑高 */
.neu-auth.na-dual .loginf_box li.na-switch-li { display: none; }

/* ==========================================================================
   移动端（≤768px）：双面板在窄屏无法成立 ⇒ 降级为「单表单 + 底部文字切换」
   （沿用设计稿自己的降级方案）
   ========================================================================== */
@media (max-width: 768px) {
    .neu-auth.na-dual .login_body { padding: 12px 14px 40px; }

    /* 头部：宽度交还（container 只有 960px，窄屏必须放开）；logo 左 / 切换器右保持一行 */
    .neu-auth.na-dual .login_top { width: auto; }
    .neu-auth.na-dual .na-lang-btn { height: 36px; padding: 0 12px; font-size: 12.5px; }
    .neu-auth.na-dual .na-lang-list { top: 44px; min-width: 160px; }

    .neu-auth.na-dual .na-stage {
        height: auto !important;      /* 高度交还 CSS，不再由 JS 接管 */
        padding: 24px 20px 26px;
        border-radius: 22px;
        box-shadow: -8px -8px 18px var(--na-light), 8px 8px 18px var(--na-dark);
    }

    .neu-auth.na-dual .na-overlay-wrap { display: none; }

    .neu-auth.na-dual .na-form {
        position: relative;
        width: 100%;
        height: auto;
        padding: 0;
        opacity: 1;
        transform: none !important;
        animation: none !important;
        z-index: auto;
        pointer-events: auto;
    }
    .neu-auth.na-dual .na-register { display: none; }
    .neu-auth.na-dual .na-stage.na-reg .na-login { display: none; }
    .neu-auth.na-dual .na-stage.na-reg .na-register { display: flex; }

    .neu-auth.na-dual .na-switch {
        display: block;
        margin: 16px 0 0;
        font-size: 13px;
        color: var(--na-muted);
        text-align: center;
    }
    .neu-auth.na-dual .loginf_box li.na-switch-li { display: block; }
    .neu-auth.na-dual .na-switch a { color: var(--na-red); font-weight: 600; cursor: pointer; }

    /* 窄屏下单面板宽度够，恢复常规行高 */
    .neu-auth.na-dual .na-register .loginf_txt { height: 50px; }
    .neu-auth.na-dual .na-register .loginf_txt i { height: 50px; line-height: 50px; }
    .neu-auth.na-dual .na-register .login_txt { height: 50px; line-height: 50px; }
    .neu-auth.na-dual .na-register .loginf_box li { margin-bottom: 14px; }
    .neu-auth.na-dual .verifyCode,
    .neu-auth.na-dual .na-register .verifyCode,
    .neu-auth.na-dual .loginf_txt a.code { width: 122px; height: 50px; line-height: 50px; }
    .neu-auth.na-dual .verifyCode img { width: 114px; height: 39px; }
    .neu-auth.na-dual .code_txt { width: calc(100% - 132px); }
}