/**
 * Admin master layout shell — stabilizes sidebar / topbar / content across pages.
 * Keeps existing Tabler + iSMART theme; only locks geometry and scroll behavior.
 */

:root {
    --admin-sidebar-width: 280px;
    --admin-sidebar-collapsed-width: 80px;
    --admin-topbar-height: 70px;
    --admin-layout-transition: 250ms ease;
}

/* Reserve scrollbar space so short ↔ tall pages never shift the layout */
html {
    scrollbar-gutter: stable;
    overflow-y: scroll;
}

html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

body.layout-fluid {
    min-height: 100vh;
}

/* Master shell */
.page.admin-layout {
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 100vh;
    overflow: visible;
    width: 100%;
}

/* -------------------------------------------------------------------------- */
/* Sidebar — fixed geometry, independent scroll                               */
/* -------------------------------------------------------------------------- */
@media (min-width: 992px) {
    .admin-layout > .navbar-vertical.navbar-expand-lg {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        bottom: 0 !important;
        height: 100vh !important;
        width: var(--admin-sidebar-width) !important;
        max-width: var(--admin-sidebar-width) !important;
        min-width: var(--admin-sidebar-width) !important;
        z-index: 1030;
        margin: 0 !important;
        padding: 0 !important;
        overflow-x: hidden !important;
        overflow-y: auto !important;
        overscroll-behavior: contain;
        transition:
            width var(--admin-layout-transition),
            min-width var(--admin-layout-transition),
            max-width var(--admin-layout-transition);
        box-sizing: border-box;
    }

    .admin-layout > .navbar-vertical.navbar-expand-lg .container-fluid {
        width: 100%;
        max-width: 100%;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    /* Content + any sibling top chrome offset by sidebar width */
    .admin-layout > .navbar-vertical.navbar-expand-lg ~ .page-wrapper {
        margin-left: var(--admin-sidebar-width) !important;
        width: calc(100% - var(--admin-sidebar-width));
        max-width: calc(100% - var(--admin-sidebar-width));
        transition:
            margin-left var(--admin-layout-transition),
            width var(--admin-layout-transition),
            max-width var(--admin-layout-transition);
        box-sizing: border-box;
    }

    /* Collapsed */
    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical.navbar-expand-lg {
        width: var(--admin-sidebar-collapsed-width) !important;
        min-width: var(--admin-sidebar-collapsed-width) !important;
        max-width: var(--admin-sidebar-collapsed-width) !important;
    }

    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical.navbar-expand-lg ~ .page-wrapper {
        margin-left: var(--admin-sidebar-collapsed-width) !important;
        width: calc(100% - var(--admin-sidebar-collapsed-width));
        max-width: calc(100% - var(--admin-sidebar-collapsed-width));
    }

    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .nav-link-title,
    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .dropdown-toggle::after,
    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .navbar-brand img {
        opacity: 0;
        width: 0;
        overflow: hidden;
        white-space: nowrap;
        pointer-events: none;
    }

    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .navbar-brand {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
    }

    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .nav-link {
        justify-content: center;
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }

    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .dropdown-menu {
        display: none !important;
    }

    html.admin-sidebar-collapsed .admin-layout > .navbar-vertical .nav-link-icon {
        margin: 0 !important;
    }
}

/* Nested page-wrapper copies inside page content must NEVER offset again */
.page-wrapper .page-wrapper {
    margin-left: 0 !important;
    margin-right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    flex: 0 0 auto;
    display: block;
}

.page-wrapper .page-wrapper > .page-body {
    margin-top: 0;
}

/* -------------------------------------------------------------------------- */
/* Topbar — sticky within content column                                      */
/* -------------------------------------------------------------------------- */
.admin-layout > .page-wrapper > .page-header.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 1020;
    min-height: var(--admin-topbar-height);
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--tblr-bg-surface, #fff);
    border-bottom: 1px solid var(--tblr-border-color, rgba(0, 0, 0, 0.08));
    margin-top: 0 !important;
    width: 100%;
    box-sizing: border-box;
}

.admin-layout > .page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-layout > .page-wrapper > .page-body {
    flex: 1 0 auto;
}

.admin-layout > .page-wrapper > .footer {
    flex-shrink: 0;
    margin-top: auto;
    width: 100%;
}

/* -------------------------------------------------------------------------- */
/* Menu active states (theme primary — no redesign)                           */
/* -------------------------------------------------------------------------- */
.admin-layout .navbar-vertical .nav-item.active > .nav-link,
.admin-layout .navbar-vertical .nav-link.active {
    background: color-mix(in srgb, var(--tblr-primary, #1296EC) 18%, transparent);
    color: var(--tblr-primary, #1296EC);
}

.admin-layout .navbar-vertical .dropdown-item.active {
    background: color-mix(in srgb, var(--tblr-primary, #1296EC) 12%, transparent);
    color: var(--tblr-primary, #1296EC);
}

/* -------------------------------------------------------------------------- */
/* Third level menu groups inside a sidebar dropdown                          */
/* -------------------------------------------------------------------------- */
.admin-layout .navbar-vertical .admin-subgroup-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    width: 100%;
    border: 0;
    background: transparent;
    text-align: start;
}

.admin-layout .navbar-vertical .admin-subgroup-title {
    flex: 1 1 auto;
}

.admin-layout .navbar-vertical .admin-subgroup-caret {
    transition: transform 0.15s ease-in-out;
    opacity: 0.75;
}

.admin-layout .navbar-vertical .admin-subgroup-toggle[aria-expanded="true"] .admin-subgroup-caret {
    transform: rotate(180deg);
}

.admin-layout .navbar-vertical .admin-subgroup-item {
    padding-inline-start: 2rem;
}

/* Collapse toggle */
.admin-sidebar-collapse-btn {
    border: 0;
    background: transparent;
    color: inherit;
    padding: 0.35rem;
    line-height: 1;
    border-radius: 0.35rem;
    opacity: 0.85;
}

.admin-sidebar-collapse-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.08);
}

.admin-sidebar-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    width: 100%;
}

/* -------------------------------------------------------------------------- */
/* Mobile / tablet — drawer overlay                                           */
/* -------------------------------------------------------------------------- */
.admin-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1035;
    background: rgba(15, 23, 42, 0.45);
    border: 0;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

@media (max-width: 991.98px) {
    .admin-layout > .navbar-vertical.navbar-expand-lg {
        position: fixed !important;
        top: 0;
        left: 0;
        bottom: 0;
        width: min(280px, 86vw) !important;
        max-width: min(280px, 86vw) !important;
        height: 100vh !important;
        z-index: 1040;
        transform: translateX(-105%);
        transition: transform var(--admin-layout-transition);
        overflow-x: hidden !important;
        overflow-y: auto !important;
        margin: 0 !important;
        align-items: flex-start;
    }

    .admin-layout > .navbar-vertical.navbar-expand-lg.admin-sidebar-open {
        transform: translateX(0);
    }

    .admin-layout > .navbar-vertical.navbar-expand-lg > .container-fluid {
        flex-direction: column;
        align-items: stretch;
        min-height: 100%;
        padding: 0.75rem;
    }

    .admin-layout > .navbar-vertical.navbar-expand-lg .navbar-collapse {
        display: flex !important;
        flex-direction: column;
        height: auto;
        visibility: visible !important;
    }

    .admin-layout > .navbar-vertical.navbar-expand-lg .navbar-toggler {
        display: none;
    }

    .admin-layout > .page-wrapper {
        margin-left: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    body.admin-mobile-sidebar-open {
        overflow: hidden;
    }

    body.admin-mobile-sidebar-open .admin-sidebar-backdrop {
        display: block;
    }

    .admin-mobile-sidebar-toggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
    }
}

@media (min-width: 992px) {
    .admin-mobile-sidebar-toggle {
        display: none !important;
    }

    .admin-sidebar-backdrop {
        display: none !important;
    }
}