:root {
    --lv1-sidebar-width: 260px;
    --lv1-sidebar-collapsed-width: 84px;
    --lv1-topbar-height: 56px;
    --lv1-bg: #f4f6fb;
    --lv1-surface: #ffffff;
    --lv1-border: #e4e7ec;
    --lv1-text: #0f172a;
    --lv1-muted: #64748b;
    --lv1-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    height: 100%;
    background: var(--lv1-bg);
    color: var(--lv1-text);
}

.lv1-shell {
    display: flex;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
}

.lv1-main {
    flex: 1 1 auto;
    min-width: 0;
    width: calc(100% - var(--lv1-sidebar-width));
    max-width: calc(100% - var(--lv1-sidebar-width));
    display: flex;
    flex-direction: column;
}

.lv1-content {
    flex: 1;
    min-height: 0;
    min-width: 0;
    width: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 14px;
}

body.lv1-sidebar-collapsed .lv1-main,
.lv1-sidebar.lv1-collapsed + .lv1-main {
    width: calc(100% - var(--lv1-sidebar-collapsed-width));
    max-width: calc(100% - var(--lv1-sidebar-collapsed-width));
}

@media (max-width: 991.98px) {
    .lv1-main {
        width: 100%;
        max-width: 100%;
    }
}