/* Site navigation: white glass surface, ink text, indigo actions. */
:root {
    --site-nav-height: 66px;
    --site-nav-ink: #1f2b3d;
    --site-nav-muted: #64748b;
    --site-nav-line: #e4eaf3;
    --site-nav-surface: rgba(255, 255, 255, .94);
    --site-nav-soft: #f4f7fb;
    --site-nav-accent: #4f63e6;
    --site-nav-accent-2: #7a5cf0;
    --site-nav-accent-ink: #3346c9;
    --site-nav-shadow: 0 1px 0 rgba(31, 43, 61, .05), 0 10px 30px rgba(31, 43, 61, .06);
    --site-nav-font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body {
    padding-top: var(--site-nav-height);
}

.site-nav {
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: var(--site-nav-surface);
    border-bottom: 1px solid var(--site-nav-line);
    box-shadow: var(--site-nav-shadow);
    box-sizing: border-box;
    color: var(--site-nav-ink);
    font-family: var(--site-nav-font);
    height: var(--site-nav-height);
    left: 0;
    position: fixed;
    right: 0;
    top: 0;
    z-index: 1035;
}

.site-nav-inner {
    align-items: center;
    display: flex;
    gap: 28px;
    height: 100%;
    margin: 0 auto;
    padding: 0 clamp(18px, 3.5vw, 68px);
    width: 100%;
}

.site-brand {
    align-items: center;
    color: var(--site-nav-ink);
    display: inline-flex;
    flex: 0 0 auto;
    gap: 10px;
    text-decoration: none;
}

.site-brand:hover {
    color: var(--site-nav-ink);
    text-decoration: none;
}

.site-brand-mark {
    align-items: center;
    background: linear-gradient(135deg, var(--site-nav-accent), var(--site-nav-accent-2));
    border-radius: 10px;
    box-shadow: 0 6px 16px rgba(79, 99, 230, .26);
    color: #fff;
    display: inline-flex;
    font-size: 18px;
    font-weight: 800;
    height: 34px;
    justify-content: center;
    width: 34px;
}

.site-brand-text {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: .02em;
}

.site-brand-sub {
    color: #94a3b8;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .18em;
    margin-left: 2px;
    transform: translateY(1px);
}

.site-nav-toggle {
    background: transparent;
    border: 1px solid var(--site-nav-line);
    border-radius: 10px;
    display: none;
    flex-direction: column;
    gap: 4px;
    height: 38px;
    justify-content: center;
    margin-left: auto;
    padding: 0 10px;
    width: 42px;
}

.site-nav-toggle span {
    background: var(--site-nav-ink);
    border-radius: 2px;
    display: block;
    height: 2px;
    transition: transform .18s ease, opacity .18s ease;
    width: 18px;
}

.site-nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.site-nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.site-nav-menu {
    align-items: center;
    display: flex !important;
    flex: 1;
    gap: 24px;
    justify-content: space-between;
    min-width: 0;
}

.site-nav-links {
    align-items: center;
    display: flex;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav-links > li {
    position: relative;
}

.site-nav-links > li > a {
    align-items: center;
    border-radius: 9px;
    color: var(--site-nav-muted);
    display: inline-flex;
    font-size: 15px;
    font-weight: 600;
    gap: 6px;
    line-height: 1;
    padding: 10px 14px;
    text-decoration: none;
    transition: background .16s ease, color .16s ease;
    white-space: nowrap;
}

.site-nav-links > li > a:hover,
.site-nav-links > li.active > a {
    background: var(--site-nav-soft);
    color: var(--site-nav-accent-ink);
    text-decoration: none;
}

.site-nav-links > li.active > a {
    box-shadow: inset 0 -2px 0 var(--site-nav-accent);
}

.site-dropdown .dropdown-toggle .fa {
    font-size: 10px;
    opacity: .6;
}

.site-dropdown-menu {
    background: #fff;
    border: 1px solid var(--site-nav-line);
    border-radius: 14px;
    box-shadow: 0 18px 50px rgba(31, 43, 61, .13);
    margin-top: 10px;
    min-width: 190px;
    padding: 8px;
}

.site-dropdown-menu > li > a {
    border-radius: 9px;
    color: #44546c;
    font-size: 13px;
    font-weight: 500;
    padding: 9px 12px;
}

.site-dropdown-menu > li > a:hover {
    background: var(--site-nav-soft);
    color: var(--site-nav-accent-ink);
}

.site-dropdown-menu .divider {
    margin: 6px 4px;
}

.site-dropdown-menu .dropdown-header {
    color: #94a3b8;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .12em;
    padding: 8px 12px 4px;
}

.site-nav-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: auto;
}

.site-search {
    align-items: center;
    background: var(--site-nav-soft);
    border: 1px solid transparent;
    border-radius: 999px;
    display: flex;
    gap: 8px;
    height: 38px;
    padding: 0 12px;
    transition: background .16s ease, border-color .16s ease, box-shadow .16s ease;
    width: 220px;
}

.site-search:focus-within {
    background: #fff;
    border-color: #c7d2fe;
    box-shadow: 0 0 0 4px rgba(79, 99, 230, .10);
}

.site-search .fa {
    color: #94a3b8;
    font-size: 13px;
}

.site-search-input {
    background: transparent;
    border: 0;
    color: var(--site-nav-ink);
    flex: 1;
    font-family: inherit;
    font-size: 14px;
    min-width: 0;
    outline: none;
}

.site-search-input::placeholder {
    color: #94a3b8;
}

.site-action {
    align-items: center;
    border: 1px solid transparent;
    border-radius: 10px;
    display: inline-flex;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    gap: 7px;
    height: 38px;
    justify-content: center;
    line-height: 1;
    padding: 0 13px;
    text-decoration: none;
    transition: transform .16s ease, box-shadow .16s ease, background .16s ease, color .16s ease, border-color .16s ease;
    white-space: nowrap;
}

.site-action:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.site-action-ghost {
    background: #fff;
    border-color: #d8e1ec;
    color: #3e4d63;
}

.site-action-ghost:hover {
    background: var(--site-nav-soft);
    border-color: #b9c8dc;
    color: var(--site-nav-accent-ink);
}

.site-action-primary {
    background: linear-gradient(135deg, var(--site-nav-accent), var(--site-nav-accent-2));
    box-shadow: 0 7px 18px rgba(79, 99, 230, .22);
    color: #fff;
}

.site-action-primary:hover {
    box-shadow: 0 10px 24px rgba(79, 99, 230, .30);
    color: #fff;
}

.site-action-admin {
    background: #eef2f8;
    border-color: #dbe4ef;
    color: #38506d;
}

.site-action-admin:hover {
    background: #e6ecf5;
    color: #243b57;
}

.site-action-muted {
    background: transparent;
    border-color: transparent;
    color: #7c8ba1;
    padding: 0 8px;
}

.site-action-muted:hover {
    background: var(--site-nav-soft);
    color: #3e4d63;
}

.site-logout {
    display: inline-flex;
    margin: 0;
}

@media (max-width: 1280px) {
    .site-brand-sub {
        display: none;
    }
}

@media (max-width: 1100px) {
    .site-nav-inner {
        gap: 18px;
    }

    .site-nav-toggle {
        display: inline-flex;
    }

    .site-nav-menu {
        background: #fff;
        border-top: 1px solid var(--site-nav-line);
        box-shadow: 0 18px 40px rgba(31, 43, 61, .10);
        display: none !important;
        flex-direction: column;
        gap: 14px;
        left: 0;
        max-height: calc(100vh - var(--site-nav-height));
        overflow-y: auto;
        padding: 16px clamp(18px, 3.5vw, 68px) 20px;
        position: absolute;
        right: 0;
        top: var(--site-nav-height);
    }

    .site-nav-menu.in {
        display: flex !important;
    }

    .site-nav-links {
        align-items: stretch;
        flex-direction: column;
        gap: 2px;
        width: 100%;
    }

    .site-nav-links > li > a {
        justify-content: space-between;
        width: 100%;
    }

    .site-dropdown-menu {
        border: 0;
        box-shadow: none;
        float: none;
        margin: 0 0 6px 12px;
        padding: 4px 0;
        position: static;
    }

    .site-nav-actions {
        align-items: stretch;
        flex-direction: column;
        gap: 8px;
        margin-left: 0;
        width: 100%;
    }

    .site-search,
    .site-action,
    .site-logout {
        width: 100%;
    }

    .site-logout .site-action {
        width: 100%;
    }
}

@media (max-width: 650px) {
    .site-brand-text {
        font-size: 18px;
    }
}