.shell {
    grid-template-columns: 264px minmax(0, 1fr);
}

.portal-sidebar {
    padding: 24px 18px;
    scrollbar-width: thin;
    scrollbar-color: #64748b transparent;
}

.portal-sidebar .sidebar-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin: 0 0 24px;
    padding: 5px 8px 22px;
    border-bottom: 1px solid #ffffff12;
}

.portal-sidebar .sidebar-brand .brand-logo {
    display: block;
    width: 100%;
    max-width: 220px;
    max-height: 84px;
    height: auto;
    object-fit: contain;
}

.portal-sidebar .sidebar-brand small {
    display: block;
    font-size: 10px;
    letter-spacing: 2px;
}

.portal-sidebar .sidebar-navigation {
    display: block;
    flex: 0 0 auto;
}

.sidebar-nav-group + .sidebar-nav-group {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid #ffffff0d;
}

.portal-sidebar .nav-caption {
    display: block;
    margin: 0 12px 8px;
    color: #91a1bc;
    font-size: 10px;
    letter-spacing: 1.6px;
}

.portal-sidebar .sidebar-navigation a {
    margin: 3px 0;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 13px;
    gap: 12px;
    min-height: 43px;
}

.portal-sidebar .sidebar-navigation a.selected {
    box-shadow: 0 4px 14px var(--brand-glow);
}

.portal-sidebar .sidebar-footer {
    display: grid;
    padding: 24px 12px 0;
    margin-top: auto;
}

.mobile-menu-bar,
.sidebar-close,
.sidebar-overlay {
    display: none;
}

@media (max-width: 800px) {
    .shell {
        grid-template-columns: minmax(0, 1fr);
    }

    .portal-sidebar {
        position: static;
        height: auto;
        padding: 22px 18px;
    }

    .nav-enhanced .mobile-menu-bar {
        position: sticky;
        top: 0;
        z-index: 1040;
        display: flex;
        align-items: center;
        gap: 14px;
        min-height: 66px;
        padding: 10px 16px;
        background: var(--brand-sidebar, #131b2e);
        color: #fff;
        border-bottom: 1px solid #ffffff16;
    }

    .mobile-menu-toggle,
    .portal-sidebar .sidebar-close {
        display: inline-grid;
        place-items: center;
        flex: 0 0 44px;
        width: 44px;
        height: 44px;
        padding: 0;
        border: 1px solid #ffffff26;
        border-radius: 10px;
        background: #ffffff09;
        color: #fff;
        box-shadow: none;
        filter: none;
    }

    .mobile-menu-toggle:hover,
    .portal-sidebar .sidebar-close:hover {
        color: #fff;
        background: #ffffff18;
    }

    .mobile-brand {
        display: flex;
        align-items: center;
        color: #fff;
    }

    .mobile-brand img {
        display: block;
        width: 126px;
        max-height: 44px;
        object-fit: contain;
    }

    .mobile-portal-name {
        margin-left: auto;
        font-size: 10px;
        color: #b9c5d9;
        letter-spacing: 1px;
        text-transform: uppercase;
    }

    .nav-enhanced .portal-sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        z-index: 1100;
        width: min(300px, 88vw);
        height: 100vh;
        height: 100dvh;
        padding: 22px 18px;
        overflow-y: auto;
        overscroll-behavior: contain;
        transform: translateX(-102%);
        visibility: hidden;
        transition: transform .2s ease, visibility .2s;
        box-shadow: 14px 0 50px #00000035;
    }

    .nav-enhanced.sidebar-is-open .portal-sidebar {
        transform: translateX(0);
        visibility: visible;
    }

    .portal-sidebar .sidebar-close {
        display: none;
    }

    .nav-enhanced .portal-sidebar .sidebar-close {
        display: grid;
        align-self: flex-end;
        margin-bottom: 10px;
        font-size: 28px;
    }

    .nav-enhanced .sidebar-overlay:not([hidden]) {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 1090;
        width: 100%;
        height: 100%;
        margin: 0;
        padding: 0;
        border: 0;
        border-radius: 0;
        background: #0b112a99;
        box-shadow: none;
        backdrop-filter: blur(2px);
    }

    body.sidebar-is-open {
        overflow: hidden;
    }
}

@media (max-width: 360px) {
    .mobile-portal-name {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav-enhanced .portal-sidebar {
        transition: none;
    }
}

/* Compact desktop sidebar — 20261020-122152 */
@media (min-width: 801px) {
    .portal-sidebar {
        padding: 16px 18px;
    }

    .portal-sidebar .sidebar-brand {
        gap: 6px;
        margin-bottom: 14px;
        padding-bottom: 14px;
    }

    .portal-sidebar .sidebar-brand .brand-logo {
        max-height: 64px;
    }

    .sidebar-nav-group + .sidebar-nav-group {
        margin-top: 12px;
        padding-top: 10px;
    }

    .portal-sidebar .nav-caption {
        margin-bottom: 5px;
    }

    .portal-sidebar .sidebar-navigation a {
        min-height: 36px;
        margin: 2px 0;
        padding: 7px 12px;
    }

    .portal-sidebar .sidebar-footer {
        padding-top: 14px;
        gap: 8px;
    }
}