/* =========================================================
   Top navigation — consolidated clean rebuild
   Reference: YouTube clone compact header structure,
   Tencent Video neutral translucent search field.
   Loaded last so it owns the masthead.
   ========================================================= */

:root {
    --xnav-height: 56px;
    --xnav-height-mobile: 52px;
    --xnav-max-width: 1440px;
    --xnav-side-gap: 24px;
    --xnav-accent: #FF6A00;
    --xnav-accent-strong: #E65F00;
    --xnav-accent-soft: rgba(255, 106, 0, 0.14);
    --xnav-dark-bg: rgba(17, 19, 24, 0.94);
    --xnav-dark-border: rgba(255, 255, 255, 0.06);
    --xnav-dark-search: rgba(255, 255, 255, 0.10);
    --xnav-dark-search-hover: rgba(255, 255, 255, 0.14);
    --xnav-light-bg: rgba(255, 255, 255, 0.96);
    --xnav-light-border: rgba(0, 0, 0, 0.06);
    --xnav-light-search: #f2f3f5;
    --xnav-light-search-hover: #ffffff;
}

body {
    padding-top: var(--xnav-height) !important;
}

#app > .top-nav,
.top-nav {
    position: fixed !important;
    inset: 0 0 auto 0 !important;
    z-index: 120 !important;
    width: 100% !important;
    height: var(--xnav-height) !important;
    min-height: var(--xnav-height) !important;
    padding: 0 var(--xnav-side-gap) !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
    background: var(--xnav-dark-bg) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--xnav-dark-border) !important;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08) !important;
    backdrop-filter: blur(20px) saturate(150%) !important;
    -webkit-backdrop-filter: blur(20px) saturate(150%) !important;
}

[data-theme="light"] #app > .top-nav,
[data-theme="light"] .top-nav {
    background: var(--xnav-light-bg) !important;
    border-bottom-color: var(--xnav-light-border) !important;
    box-shadow: 0 8px 30px rgba(20, 24, 32, 0.06) !important;
}

#app > .top-nav .top-nav-box,
.top-nav .top-nav-box {
    width: 100% !important;
    max-width: var(--xnav-max-width) !important;
    height: 100% !important;
    min-height: 0 !important;
    margin: 0 auto !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    background: transparent !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

/* Logo */
#app > .top-nav .top-nav-logo,
.top-nav .top-nav-logo {
    flex: 0 0 auto !important;
    min-width: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 9px !important;
    color: inherit !important;
    text-decoration: none !important;
}

#app > .top-nav .top-nav-logo .logo-img,
#app > .top-nav .top-nav-logo .logo-placeholder,
.top-nav .top-nav-logo .logo-img,
.top-nav .top-nav-logo .logo-placeholder {
    width: 30px !important;
    height: 30px !important;
    min-width: 30px !important;
    border-radius: 8px !important;
    object-fit: cover !important;
    overflow: hidden !important;
}

#app > .top-nav .top-nav-logo .logo-placeholder,
.top-nav .top-nav-logo .logo-placeholder {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: rgba(255, 255, 255, 0.10) !important;
    color: #FF6A00 !important;
    font-size: 14px !important;
    font-weight: 800 !important;
    letter-spacing: -0.02em !important;
}

#app > .top-nav .top-nav-logo .logo-text,
.top-nav .top-nav-logo .logo-text {
    display: flex !important;
    align-items: center !important;
    min-width: 0 !important;
}

#app > .top-nav .top-nav-logo .logo-title-row,
.top-nav .top-nav-logo .logo-title-row {
    display: flex !important;
    align-items: baseline !important;
    gap: 6px !important;
}

#app > .top-nav .top-nav-logo .logo-name,
.top-nav .top-nav-logo .logo-name {
    color: var(--theme-text) !important;
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif !important;
    font-size: 15px !important;
    font-weight: 700 !important;
    line-height: 22px !important;
    letter-spacing: -0.01em !important;
    white-space: nowrap !important;
}

#app > .top-nav .top-nav-logo .logo-version,
#app > .top-nav .top-nav-logo .logo-subtitle,
.top-nav .top-nav-logo .logo-version,
.top-nav .top-nav-logo .logo-subtitle {
    display: none !important;
}

/* Primary menu */
#app > .top-nav .top-nav-menu,
.top-nav .top-nav-menu {
    display: flex !important;
    align-items: center !important;
    gap: 2px !important;
    min-width: 0 !important;
    margin-left: 14px !important;
    margin-right: auto !important;
    overflow: hidden !important;
}

#app > .top-nav .nav-menu-item,
#app > .top-nav .top-nav-menu > a,
.top-nav .nav-menu-item,
.top-nav .top-nav-menu > a {
    height: 32px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 13px !important;
    margin: 0 !important;
    border: 0 !important;
    border-radius: 8px !important;
    background: transparent !important;
    color: var(--theme-text-secondary) !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    line-height: 20px !important;
    white-space: nowrap !important;
    text-decoration: none !important;
    cursor: pointer !important;
    transition: background-color 160ms ease, color 160ms ease !important;
}

#app > .top-nav .nav-menu-item:hover,
#app > .top-nav .top-nav-menu > a:hover,
.top-nav .nav-menu-item:hover,
.top-nav .top-nav-menu > a:hover {
    background: rgba(255, 255, 255, 0.06) !important;
    color: var(--theme-text) !important;
}

[data-theme="light"] #app > .top-nav .nav-menu-item:hover,
[data-theme="light"] #app > .top-nav .top-nav-menu > a:hover,
[data-theme="light"] .top-nav .nav-menu-item:hover,
[data-theme="light"] .top-nav .top-nav-menu > a:hover {
    background: rgba(0, 0, 0, 0.05) !important;
}

#app > .top-nav .nav-menu-item.active,
#app > .top-nav .top-nav-menu > a.active,
.top-nav .nav-menu-item.active,
.top-nav .top-nav-menu > a.active {
    background: var(--xnav-accent-soft) !important;
    color: var(--xnav-accent) !important;
}

/* Search bar */
#app > .top-nav .nav-search-box,
.top-nav .nav-search-box,
.nav-search-box.mod_search {
    flex: 0 1 420px !important;
    width: min(420px, 100%) !important;
    min-width: 210px !important;
    height: 34px !important;
    margin: 0 !important;
    padding: 0 5px 0 11px !important;
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    border: 1px solid transparent !important;
    border-radius: 8px !important;
    background: var(--xnav-dark-search) !important;
    box-shadow: none !important;
    transition: background-color 160ms ease, border-color 160ms ease !important;
}

[data-theme="light"] #app > .top-nav .nav-search-box,
[data-theme="light"] .top-nav .nav-search-box,
[data-theme="light"] .nav-search-box.mod_search {
    background: var(--xnav-light-search) !important;
}

#app > .top-nav .nav-search-box:hover,
#app > .top-nav .nav-search-box:focus-within,
.top-nav .nav-search-box:hover,
.top-nav .nav-search-box:focus-within,
.nav-search-box.mod_search:hover,
.nav-search-box.mod_search:focus-within {
    background: var(--xnav-dark-search-hover) !important;
    border-color: rgba(255, 255, 255, 0.14) !important;
}

[data-theme="light"] #app > .top-nav .nav-search-box:hover,
[data-theme="light"] #app > .top-nav .nav-search-box:focus-within,
[data-theme="light"] .top-nav .nav-search-box:hover,
[data-theme="light"] .top-nav .nav-search-box:focus-within,
[data-theme="light"] .nav-search-box.mod_search:hover,
[data-theme="light"] .nav-search-box.mod_search:focus-within {
    background: var(--xnav-light-search-hover) !important;
    border-color: rgba(0, 0, 0, 0.12) !important;
}

#app > .top-nav .nav-search-box .search_keywords,
.top-nav .nav-search-box .search_keywords {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
}

#app > .top-nav .nav-search-box .search-box__icon-search,
#app > .top-nav .nav-search-box .nav-search-icon,
.top-nav .nav-search-box .search-box__icon-search,
.top-nav .nav-search-box .nav-search-icon {
    flex: 0 0 auto !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 18px !important;
    height: 18px !important;
    color: var(--theme-text-secondary) !important;
}

#app > .top-nav .nav-search-box .search-box__icon-search svg,
#app > .top-nav .nav-search-box .nav-search-icon svg,
.top-nav .nav-search-box .search-box__icon-search svg,
.top-nav .nav-search-box .nav-search-icon svg {
    width: 100% !important;
    height: 100% !important;
}

#app > .top-nav .nav-search-box .search_input,
#app > .top-nav .nav-search-box input[type="text"],
.top-nav .nav-search-box .search_input,
.top-nav .nav-search-box input[type="text"] {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    height: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 0 !important;
    outline: 0 !important;
    background: transparent !important;
    color: var(--theme-text) !important;
    font-size: 14px !important;
    line-height: 20px !important;
    box-shadow: none !important;
}

#app > .top-nav .nav-search-box .search_input::placeholder,
#app > .top-nav .nav-search-box input[type="text"]::placeholder,
.top-nav .nav-search-box .search_input::placeholder,
.top-nav .nav-search-box input[type="text"]::placeholder {
    color: var(--theme-text-secondary) !important;
    opacity: 0.78 !important;
}

#app > .top-nav .nav-search-box .search-btn,
#app > .top-nav .nav-search-box .search-btn-wrap,
.top-nav .nav-search-box .search-btn,
.top-nav .nav-search-box .search-btn-wrap {
    flex: 0 0 auto !important;
    height: 26px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 13px !important;
    margin: 0 !important;
    border: 0 !important;
    border-radius: 6px !important;
    background: transparent !important;
    color: var(--theme-text) !important;
    cursor: pointer !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    line-height: 20px !important;
    transition: background-color 160ms ease, color 160ms ease !important;
}

#app > .top-nav .nav-search-box .search-btn:hover,
#app > .top-nav .nav-search-box .search-btn-wrap:hover,
.top-nav .nav-search-box .search-btn:hover,
.top-nav .nav-search-box .search-btn-wrap:hover {
    background: rgba(255, 255, 255, 0.08) !important;
}

[data-theme="light"] #app > .top-nav .nav-search-box .search-btn:hover,
[data-theme="light"] #app > .top-nav .nav-search-box .search-btn-wrap:hover,
[data-theme="light"] .top-nav .nav-search-box .search-btn:hover,
[data-theme="light"] .top-nav .nav-search-box .search-btn-wrap:hover {
    background: rgba(0, 0, 0, 0.06) !important;
}

#app > .top-nav .nav-search-box .btn_inner,
.top-nav .nav-search-box .btn_inner {
    color: inherit !important;
    font-size: inherit !important;
}

/* Right actions */
#app > .top-nav .top-nav-actions,
.top-nav .top-nav-actions {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 6px !important;
    flex: 0 0 auto !important;
    min-width: 0 !important;
}

#app > .top-nav .theme-switcher-btn,
#app > .top-nav .nav-menu-icon,
#app > .top-nav .nav-search-icon-btn,
.top-nav .theme-switcher-btn,
.top-nav .nav-menu-icon,
.top-nav .nav-search-icon-btn {
    width: 32px !important;
    height: 32px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border: 0 !important;
    border-radius: 8px !important;
    background: transparent !important;
    color: var(--theme-text-secondary) !important;
    cursor: pointer !important;
    transition: background-color 160ms ease, color 160ms ease !important;
}

#app > .top-nav .theme-switcher-btn svg,
#app > .top-nav .nav-menu-icon svg,
#app > .top-nav .nav-search-icon-btn svg,
.top-nav .theme-switcher-btn svg,
.top-nav .nav-menu-icon svg,
.top-nav .nav-search-icon-btn svg {
    width: 20px !important;
    height: 20px !important;
}

#app > .top-nav .theme-switcher-btn:hover,
#app > .top-nav .nav-menu-icon:hover,
#app > .top-nav .nav-search-icon-btn:hover,
.top-nav .theme-switcher-btn:hover,
.top-nav .nav-menu-icon:hover,
.top-nav .nav-search-icon-btn:hover {
    background: rgba(255, 255, 255, 0.06) !important;
    color: var(--theme-text) !important;
}

[data-theme="light"] #app > .top-nav .theme-switcher-btn:hover,
[data-theme="light"] #app > .top-nav .nav-menu-icon:hover,
[data-theme="light"] #app > .top-nav .nav-search-icon-btn:hover,
[data-theme="light"] .top-nav .theme-switcher-btn:hover,
[data-theme="light"] .top-nav .nav-menu-icon:hover,
[data-theme="light"] .top-nav .nav-search-icon-btn:hover {
    background: rgba(0, 0, 0, 0.05) !important;
}

/* Desktop defaults */
#app > .top-nav .nav-search-icon-btn,
.top-nav .nav-search-icon-btn {
    display: none !important;
}

#app > .top-nav .nav-menu-icon,
.top-nav .nav-menu-icon {
    display: none !important;
}

#app > .top-nav .nav-menu-icon,
.top-nav .nav-menu-icon {
    font-size: 18px !important;
}

/* Small screens: compact masthead, search icon + drawer toggle */
@media (max-width: 768px) {
    :root {
        --xnav-side-gap: 12px;
    }

    body {
        padding-top: var(--xnav-height-mobile) !important;
    }

    #app > .top-nav,
    .top-nav {
        height: var(--xnav-height-mobile) !important;
        min-height: var(--xnav-height-mobile) !important;
    }

    #app > .top-nav .top-nav-box,
    .top-nav .top-nav-box {
        gap: 8px !important;
    }

    #app > .top-nav .top-nav-actions,
    .top-nav .top-nav-actions {
        margin-left: auto !important;
    }

    #app > .top-nav .top-nav-menu,
    #app > .top-nav .nav-search-box,
    .top-nav .top-nav-menu,
    .top-nav .nav-search-box {
        display: none !important;
    }

    #app > .top-nav .nav-search-icon-btn,
    #app > .top-nav .nav-menu-icon,
    .top-nav .nav-search-icon-btn,
    .top-nav .nav-menu-icon {
        display: inline-flex !important;
    }

    #app > .top-nav .nav-search-icon-btn,
    .top-nav .nav-search-icon-btn {
        margin-left: auto !important;
    }

    #app > .top-nav .top-nav-logo .logo-img,
    #app > .top-nav .top-nav-logo .logo-placeholder,
    .top-nav .top-nav-logo .logo-img,
    .top-nav .top-nav-logo .logo-placeholder {
        width: 28px !important;
        height: 28px !important;
        min-width: 28px !important;
        border-radius: 7px !important;
    }

    #app > .top-nav .top-nav-logo .logo-name,
    .top-nav .top-nav-logo .logo-name {
        font-size: 14px !important;
    }
}

/* Prevent the previous search-icon pseudo elements from coming back. */
#app > .top-nav .nav-search-box .simple-style,
#app > .top-nav .nav-search-box .whole-style,
#app > .top-nav .nav-search-box .icon-text-wrap,
.top-nav .nav-search-box .simple-style,
.top-nav .nav-search-box .whole-style,
.top-nav .nav-search-box .icon-text-wrap {
    display: none !important;
}

/* Preserve a clear focus ring for keyboard users. */
#app > .top-nav .nav-search-box:focus-within,
.top-nav .nav-search-box:focus-within,
.nav-search-box.mod_search:focus-within {
    box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.12) !important;
}