:root {
    /* Common */
    --trax-sidebar-width: 240px;
    --trax-topbar-height: 44px;
    --trax-radius: 4px;
    --trax-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    
    /* Transition duration for theme changes */
    --trax-theme-transition: 0.3s;
}

body.b-theme-dark {

}

/* Shell */
.trax-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: var(--trax-sidebar-width) 1fr;
    transition: grid-template-columns 0.3s ease, background-color var(--trax-theme-transition) ease, color var(--trax-theme-transition) ease;
}

.trax-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    background: var(--neutral-layer-1); 
    overflow: hidden;
    transition: width 0.3s ease, min-width 0.3s ease, background-color var(--trax-theme-transition) ease, border-color var(--trax-theme-transition) ease;
    z-index: 1000;
}

.mast-head {
    position: sticky !important;
    background: var(--neutral-layer-1) !important;
    border-bottom: 1px solid var(--neutral-layer-3);
    height: var(--trax-topbar-height)!important;
    top: 0;
    z-index: 100;
    width: 100%;
}

/* Top bar */
.trax-topbar {

    height: var(--trax-topbar-height);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 16px;
    transition: background-color var(--trax-theme-transition) ease, border-color var(--trax-theme-transition) ease;
}

.trax-content {
    min-width: 0;
    padding: 0;
    /*background: var(--trax-surface);*/
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
    overflow-y: auto;
    height: 100vh;
    transition: background-color var(--trax-theme-transition) ease;
}

.traxit-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

/* Responsive: Force docked at lg breakpoint and below (1024px) */
@media (max-width: 1024px) {
    /* FORCE sidebar to be docked at mobile - always apply these styles */
    .trax-shell {
        --trax-sidebar-width: 72px;
        grid-template-columns: 72px 1fr !important;
    }

    .trax-shell .trax-sidebar {
        width: 72px;
        min-width: 72px;
    }

    .trax-shell .trax-nav-brand {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 8px;
    }

    .trax-shell .trax-nav-toggle {
        margin-left: 0;
        margin-right: 0;
        width: 40px;
        height: 40px;
        order: -1;
        align-self: center;
    }

    .trax-shell .trax-nav-brand-btn {
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        padding: 0;
        order: 1;
    }

    .trax-shell .trax-nav-title,
    .trax-shell .trax-nav-label,
    .trax-shell .trax-nav-chevron {
        opacity: 0;
        display: none !important;
    }

    /* Exception: Always show labels in flyout submenus */
    .trax-shell .trax-nav-flyout .trax-nav-label {
        opacity: 1 !important;
        display: inline !important;
    }

    .trax-shell .trax-nav-item {
        justify-content: center;
        padding: 16px 14px;
    }

    .trax-shell .trax-nav-icon {
        font-size: 18px;
    }

    /* Hide inline sub-menus (flyouts will show on hover/tap) */
    .trax-shell .trax-nav-sub:not(.trax-nav-flyout) {
        display: none !important;
    }

    .trax-shell .trax-nav-sub {
        margin-left: 0;
    }
}