/* ============================================================
   寰宇工具箱 · 顶栏与共享组件样式 (topbar.css)
   所有页面共享：顶栏配色、下拉菜单、FAB、搜索弹窗、返回顶部
   令牌统一来源：theme-uno.css（--tb-* + --hp-* 兼容别名）
   加载顺序：site.min.css → tool-theme.css → theme-uno.css → topbar.css
   ============================================================ */

/* ---------- 顶栏配色覆盖 ---------- */
.topbar .logo_ico {
    background: var(--tb-primary) !important;
    color: #fff !important;
}
.topbar .navbar-brand {
    color: var(--tb-text) !important;
    font-weight: 700;
    font-size: 15px;
    padding: 0 8px 0 0 !important;
}
/* 窄屏隐藏品牌文字只留 logo */
@media (max-width: 1500px) {
    .topbar .navbar-brand { font-size: 0; padding: 0 6px !important; }
    .topbar .navbar-brand .logo_ico { font-size: 16px; }
}
.topbar .navbar-nav > li > a {
    color: var(--tb-text-2);
    transition: color .15s, background .15s;
    padding: 0 13px;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    height: 52px;
    line-height: 52px;
    border-radius: 8px;
    margin: 0 3px;
}
@media (max-width: 1199px) {
    .topbar .navbar-nav > li > a { padding: 0 10px; font-size: 12px; margin: 0 1px; }
}
@media (max-width: 991px) {
    .topbar .navbar-nav > li > a { padding: 0 8px; font-size: 12px; }
}
.topbar .navbar-nav > li > a:hover,
.topbar .navbar-nav > li:hover > a {
    color: var(--tb-primary);
    background: var(--tb-primary-soft);
    border-radius: 8px;
}
.topbar.navbar-default {
    background: var(--tb-surface);
    border-bottom: 1px solid var(--tb-border);
    box-shadow: 0 1px 3px rgba(45,42,36,.04);
}
/* 顶栏品牌 logo 圆角化 */
.topbar .logo_ico {
    border-radius: 7px;
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
    font-size: 14px;
}
.topbar .navbar-brand {
    display: flex;
    align-items: center;
    gap: 0;
}

/* ---------- 顶栏下拉菜单重设计 ---------- */
.topbar .dropdown-menu {
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    box-shadow: 0 8px 28px rgba(45,42,36,.12), 0 2px 8px rgba(45,42,36,.06);
    padding: 8px;
    min-width: 220px;
    max-width: 560px;
    animation: dropdownSlide .18s cubic-bezier(.4,0,.2,1);
}
/* 深色模式下金属阴影 */
[data-theme="dark"] .topbar .dropdown-menu {
    box-shadow: 0 10px 30px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.35);
}
/* 工具数多的分类下拉菜单自动多列（仅 hover 时生效） */
.topbar .dropdown:hover .dropdown-menu.ul-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
}
.topbar .dropdown.multi-col:hover .dropdown-menu.ul-list {
    grid-template-columns: 1fr 1fr;
    min-width: 420px;
}
@keyframes dropdownSlide {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 分类头部标签 */
.topbar .dropdown-header-cat {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px 8px;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--tb-border);
    font-size: 12px;
    font-weight: 600;
    color: var(--tb-text-3);
    text-transform: uppercase;
    letter-spacing: .5px;
    white-space: nowrap;
    grid-column: 1 / -1;
}
.topbar .dropdown-header-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.topbar .dropdown-header-count {
    margin-left: auto;
    font-weight: 400;
    color: var(--tb-text-3);
    font-size: 11px;
}

/* 工具项：彩色圆点 + hover 背景 */
.topbar .dropdown-menu > li:not(.dropdown-header-cat) > a {
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: var(--tb-radius-sm);
    padding: 8px 12px;
    font-size: 13px;
    transition: all .12s;
    color: var(--tb-text);
}
.topbar .dropdown-tool-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    opacity: .4;
    flex-shrink: 0;
    transition: opacity .12s;
}
.topbar .dropdown-menu > li:not(.dropdown-header-cat) > a:hover {
    background: var(--tb-surface-hover);
    color: var(--cat-c, var(--tb-primary));
}
.topbar .dropdown-menu > li:not(.dropdown-header-cat) > a:hover .dropdown-tool-dot {
    opacity: 1;
}
.topbar .dropdown-menu > li.cur > a {
    color: var(--cat-c, var(--tb-primary));
    font-weight: 600;
}
.topbar .dropdown-menu > li.cur > a .dropdown-tool-dot {
    opacity: 1;
}

/* 覆盖 Bootstrap 下拉菜单硬编码颜色（仅 divider/头部，item 配色由上方规则按分类处理） */
.topbar .dropdown-menu .divider {
    background-color: var(--tb-border) !important;
}
.topbar .dropdown-menu .dropdown-header {
    color: var(--tb-text-3) !important;
}

/* 分类菜单激活态：底部彩色下划线 */
.topbar .navbar-nav > li.dropdown.active > .dropdown-toggle,
.topbar .navbar-nav > li.dropdown:hover > .dropdown-toggle {
    color: var(--tb-primary);
}
.topbar .navbar-nav > li.dropdown.active > .dropdown-toggle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    border-radius: 1px;
    background: var(--tb-primary);
}
.topbar .navbar-nav > li.dropdown > .dropdown-toggle {
    position: relative;
}

/* caret 美化 */
.topbar .caret {
    border: none;
    width: auto;
    height: auto;
    display: inline-block;
    margin-left: 2px;
    font-size: 0;
    vertical-align: middle;
}
.topbar .caret::after {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    margin-top: -3px;
    transition: transform .2s;
}
.topbar .navbar-nav > li:hover > .dropdown-toggle .caret::after {
    transform: rotate(225deg);
    margin-top: 1px;
}
html { padding-top: 52px !important; }

/* 顶栏右侧按钮 */
.nav-search .nav-search-btn {
    color: var(--tb-text-2) !important;
    border-color: var(--tb-border) !important;
    background: var(--tb-surface-hover) !important;
}
.nav-search .nav-search-btn:hover {
    color: var(--tb-primary) !important;
    border-color: var(--tb-primary) !important;
    background: var(--tb-primary-soft) !important;
}
.nav-theme a { color: var(--tb-text-2) !important; }
.nav-theme a:hover { color: var(--tb-primary) !important; }

/* 返回顶部 */
.gotop {
    background: var(--tb-primary) !important;
}
.gotop .arrow.lit {
    border-color: transparent transparent var(--tb-primary-hover) !important;
}

/* FAB 按钮 */
.fab-cat {
    background: var(--tb-primary) !important;
    border-color: var(--tb-primary) !important;
}
.fab-cat.active {
    background: var(--tb-primary-hover) !important;
}
.fab-search, .fab-theme {
    background: var(--tb-surface) !important;
    border-color: var(--tb-border) !important;
    color: var(--tb-text-2) !important;
}

/* 搜索弹窗 */
.search-pop { background: var(--tb-surface) !important; }
.search-pop-input { border-color: var(--tb-primary) !important; }
.search-pop-close {
    color: var(--tb-text-2) !important;
    border-color: var(--tb-border) !important;
    background: var(--tb-surface-hover) !important;
}
.search-pop-close:hover {
    border-color: var(--tb-primary) !important;
    color: var(--tb-primary) !important;
}

/* 浮动分类导航 */
.float-cat-item.active {
    background: var(--tb-primary-soft) !important;
    color: var(--tb-primary-hover) !important;
}

/* 面包屑 */
.crumb-bar {
    background: var(--tb-bg-alt) !important;
    border-bottom: 1px solid var(--tb-border);
}
.crumb-bar .breadcrumb > li > a {
    color: var(--tb-text-2);
    transition: color .15s;
}
.crumb-bar .breadcrumb > li > a:hover {
    color: var(--tb-primary);
    text-decoration: none;
}
.crumb-bar .breadcrumb > .active {
    color: var(--tb-text);
}

/* ============================================================
   页脚与页面分区（首页/工具页统一）
   ============================================================ */
body { background: var(--tb-bg); }

/* 足迹历史：左右留白与其它板块(20px)一致 */
.foot-history {
    color: var(--tb-text-3) !important;
    font-size: 13px;
    padding-left: 20px;
    padding-right: 20px;
}
.foot-history a {
    color: var(--tb-text-2);
}
.foot-history a:hover {
    color: var(--tb-primary);
}

/* 常用工具推荐（仅工具页） */
.foot-nav-wrap { padding-top: 10px; }
.footer-nav h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--tb-text) !important;
    margin-bottom: 12px;
}
.footer-nav .list-inline-bg {
    background: var(--tb-surface);
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    padding: 14px 16px;
    margin-bottom: 16px;
}
.footer-nav .list-inline-bg ul { margin: 0; }
.footer-nav .list-inline-bg li {
    margin: 0 12px 6px 0;
}
.footer-nav .list-inline-bg li span {
    color: var(--tb-primary);
}
.footer-nav .list-inline-bg li a,
.rand-tools a {
    color: var(--tb-text-2) !important;
    transition: color .12s;
}
.footer-nav .list-inline-bg li a:hover,
.rand-tools a:hover {
    color: var(--tb-primary) !important;
    text-decoration: none;
}

/* 友情链接（仅首页） */
.friend-link-row {
    text-align: center;
    font-size: 13px;
    color: var(--tb-text-3);
    padding: 2px 0 8px;
}
.friend-link-row a {
    color: var(--tb-text-3);
    text-decoration: none;
}
.friend-link-row a:hover {
    color: var(--tb-primary);
    text-decoration: underline;
}
.friend-link-row .fl-sep {
    margin: 0 .5em;
    color: var(--tb-border-strong);
}

/* 版权信息 */
.copyright {
    background: var(--tb-surface) !important;
    border-top: 1px solid var(--tb-border) !important;
    color: var(--tb-text-3) !important;
    font-size: 13px;
    text-align: center;
    padding-top: 12px;
    padding-bottom: 12px;
    margin-bottom: 0;
}
.copyright a {
    color: var(--tb-text-2) !important;
}
.copyright a:hover {
    color: var(--tb-primary) !important;
}
.copyright span { margin: 0 .5em; }


/* ============================================================
   Modern v2 — 导航滚动玻璃态 + 三态主题切换器
   ============================================================ */

/* 滚动后顶栏增强（.scrolled 由 app.js 切换） */
.topbar {
    transition: box-shadow .25s ease, background .25s ease;
    box-shadow: none;
}
.topbar.scrolled {
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    backdrop-filter: blur(16px) saturate(1.4);
    background: color-mix(in srgb, var(--tb-surface) 86%, transparent) !important;
    box-shadow: 0 4px 20px rgba(45, 42, 36, .08);
}
[data-theme="dark"] .topbar.scrolled {
    box-shadow: 0 4px 24px rgba(0, 0, 0, .45);
}

/* 三态主题切换器：浅色 / 深色 / 跟随系统 */
.theme-seg {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    border-radius: 100px;
    background: var(--tb-surface-hover);
    border: 1px solid var(--tb-border);
}
.theme-seg button {
    width: 30px;
    height: 26px;
    border: none;
    border-radius: 100px;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--tb-text-3);
    transition: background .18s, box-shadow .18s, transform .12s;
    padding: 0;
}
.theme-seg button:hover {
    transform: translateY(-1px);
    color: var(--tb-text);
}
.theme-seg button.on {
    background: var(--tb-surface);
    color: var(--tb-primary);
    box-shadow: 0 2px 8px rgba(45, 42, 36, .14), inset 0 0 0 1px var(--tb-border);
}
.nav-theme a.theme-toggle-btn { display: none; }


/* ============================================================
   Modern v3 — 右上角控件水平对齐 + FA 图标尺寸
   ============================================================ */

/* 右侧 li 统一为垂直居中 flex，消除搜索按钮与主题切换器错位 */
.topbar .navbar-nav.navbar-right > li {
    display: flex;
    align-items: center;
    height: 52px;
    line-height: normal;
}
.topbar .nav-search .nav-search-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    width: 38px;
    padding: 0;
    border-radius: 9px;
}
.topbar .nav-search .nav-search-btn i {
    font-size: 14px;
}
.topbar .theme-seg button i {
    font-size: 12px;
}
.topbar .logo_ico i {
    font-size: 13px;
}
.topbar .fab-ico i { font-size: 16px; }
.search-pop-close i { font-size: 13px; }

/* 数字等宽字体用于计数动画 */
.home-stat-num { font-feature-settings: "tnum"; }


/* ---------- FAB 列整体上移，底部 60-99px 区间独留给回到顶部 ---------- */
.fab-cat    { bottom: 108px !important; }
.fab-search { bottom: 158px !important; }
.fab-theme  { bottom: 208px !important; }


/* ---------- Modern v5 ---------- */
.gotop {
    width: 40px;
    height: 40px;
    padding: 0 !important;
    border-radius: 50% !important;
    line-height: 40px !important;
    text-align: center;
    right: 16px !important;
    bottom: 260px !important;
}
/* FA 箭头样式须全站生效（home.css 只覆盖首页；工具页无此规则时图标继承链接色=橙底橙字不可见） */
.gotop i {
    display: block;
    font-size: 16px;
    line-height: 40px;
    height: 40px;
    color: #fff !important;
    transform: translateY(2px); /* 光学居中：补偿 chevron 字形基线偏上 */
}


/* ---------- 导航栏搜索按钮（桌面端，Modern v6） ---------- */
.nav-search-li { display: flex; align-items: center; }
.nav-search-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--tb-border);
    background: var(--tb-surface);
    color: var(--tb-text-3);
    border-radius: 999px;
    padding: 5px 12px;
    font-size: 13px;
    line-height: 1.6;
    cursor: pointer;
    transition: border-color .18s, color .18s, box-shadow .18s;
}
.nav-search-btn:hover {
    border-color: var(--tb-primary);
    color: var(--tb-primary);
    box-shadow: 0 0 0 3px rgba(217, 119, 87, .12);
}
.nav-search-btn i { font-size: 12px; }
.nav-search-kbd {
    font-family: inherit;
    font-size: 11px;
    color: var(--tb-text-3);
    border: 1px solid var(--tb-border);
    border-radius: 5px;
    padding: 0 5px;
    background: var(--tb-bg-soft);
}
@media (max-width: 991px) {
    .nav-search-li { display: none; } /* 移动端走 FAB 搜索键 */
}

/* ---------- 搜索弹窗：列表式结果（含描述 + 键盘高亮） ---------- */
.sd-list { margin-bottom: 12px; }
.sd-list:last-child { margin-bottom: 0; }
.sd-list-title {
    font-size: 12px;
    color: var(--tb-text-3);
    margin: 0 0 6px;
    padding: 0 8px;
    display: flex;
    align-items: center;
    gap: 5px;
}
.sd-list-title i { font-size: 11px; }
.sd-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 9px 12px;
    border-radius: var(--tb-radius);
    color: var(--tb-text);
    text-decoration: none;
    border: 1px solid transparent;
    transition: background .12s, border-color .12s;
}
.sd-row:hover, .sd-row.active {
    background: var(--tb-bg-soft);
    border-color: var(--tb-border);
    text-decoration: none;
}
.sd-row.active { border-color: var(--tb-primary); }
.sd-row-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.sd-row-name { font-size: 14px; font-weight: 600; color: var(--tb-text); }
.sd-row.active .sd-row-name { color: var(--tb-primary); }
.sd-row-desc {
    font-size: 12px;
    color: var(--tb-text-3);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 420px;
}
.sd-row-cat {
    flex: none;
    font-size: 11px;
    color: var(--tb-text-3);
    border: 1px solid var(--tb-border);
    border-radius: 999px;
    padding: 1px 8px;
    background: var(--tb-surface);
}
.sd-hint {
    text-align: center;
    font-size: 12px;
    color: var(--tb-text-3);
    padding: 6px 0 2px;
}


/* ---------- 面包屑操作按钮（收藏/分享，Modern v8） ---------- */
.crumb-flex {
    display: flex;
    align-items: center;
    gap: 12px;
}
.crumb-flex .breadcrumb { flex: 1; min-width: 0; margin-bottom: 0; }
.crumb-actions { display: flex; align-items: center; gap: 6px; flex: none; }
.crumb-btn {
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--tb-border);
    background: var(--tb-surface);
    color: var(--tb-text-3);
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    transition: color .15s, border-color .15s, transform .15s;
}
.crumb-btn:hover {
    color: var(--tb-primary);
    border-color: var(--tb-primary);
    transform: translateY(-1px);
}
.crumb-btn.is-pinned { color: var(--tb-primary); border-color: var(--tb-primary); background: rgba(217, 119, 87, .08); }
.crumb-btn.is-done { color: #16a34a; border-color: #16a34a; }

/* ---------- 搜索面板底部快捷键提示 ---------- */
.sd-keys {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 8px 0 2px;
    border-top: 1px solid var(--tb-border);
    margin-top: 10px;
    font-size: 11px;
    color: var(--tb-text-3);
}
.sd-keys kbd {
    font-family: inherit;
    font-size: 10px;
    border: 1px solid var(--tb-border);
    border-radius: 4px;
    padding: 0 4px;
    background: var(--tb-bg-soft);
    margin-right: 2px;
}


/* ---------- FAB 类名冲突修复：FA 的 .fab 是 Brands 图标类，后加载覆盖了 display ----------
   原意：.fab 默认隐藏，仅 ≤991px 显示。此处用 !important 压回。 */
.fab { display: none !important; }
@media (max-width: 991px) {
    .fab { display: flex !important; }
}
/* PC（≥992px）：分类/搜索 FAB 不显示（分类走导航栏下拉、搜索走导航栏搜索键）；
   主题切换 FAB 是 PC 唯一主题入口，保留并落到常规右下角位置 */
@media (min-width: 992px) {
    .fab-cat, .fab-search { display: none !important; }
    .fab-theme { display: flex !important; bottom: 24px !important; }
    .gotop { bottom: 74px !important; } /* 回顶紧贴主题键上方，保持 10px 等距 */
}