:root {

    --sidebar-width: 260px;
    --sidebar-collapse-width: 80px;

    --header-height: 56px;
    --topbar-height: 56px;

    --layout-top-spacing: 112px;

    --bg-body: #f5f6fa;
    --bg-sidebar: #ffffff;
    --bg-topbar: #ffffff;

    --border-color: #e5e7eb;

    --text-color: #1f2937;
    --text-muted: #6b7280;

    --primary: #0d6efd;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);

    --transition: 0.25s ease;

    --radius: 12px;
}