/* ============================================================
   LAYOUT — sidebar + topbar + content + detail page
   ============================================================ */
    .app-shell {
      display: grid;
      grid-template-columns: 240px 1fr;
      min-height: 100vh;
      transition: grid-template-columns .22s ease;
    }
    .app-shell[data-sidebar="collapsed"] { grid-template-columns: 64px 1fr; }
    @media (max-width: 991.98px) {
      .app-shell, .app-shell[data-sidebar="collapsed"] { grid-template-columns: 1fr; }
    }

    /* SIDEBAR */
    .sidebar {
      background: var(--bg-card); border-right: 1px solid var(--border);
      display: flex; flex-direction: column; height: 100vh;
      position: sticky; top: 0; z-index: 50;
      overflow: hidden;
    }
    @media (max-width: 991.98px) {
      .sidebar {
        position: fixed; top: 0; left: 0; bottom: 0; width: 280px;
        transform: translateX(-100%); transition: transform .22s ease-out;
        box-shadow: var(--shadow-md); z-index: 80;
      }
      .sidebar.is-open { transform: translateX(0); }
    }
    .sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 70; }
    @media (max-width: 991.98px) { .sidebar-overlay.is-open { display: block; } }

    .sidebar-brand {
      padding: 1rem 1.125rem; border-bottom: 1px solid var(--border);
      display: flex; align-items: center; gap: .6rem; min-height: 60px;
    }
    .brand-mark {
      width: 32px; height: 32px; flex-shrink: 0;
      background: var(--mntox-verde); border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
      color: white; font-weight: 800; font-size: 1rem; letter-spacing: -.02em;
      box-shadow: 0 0 0 4px var(--mntox-verde-soft);
    }
    .brand-text { display: flex; flex-direction: column; line-height: 1.05; min-width: 0; }
    .brand-name { font-size: 1rem; font-weight: 700; color: var(--text-primary); letter-spacing: .01em; }
    .brand-sub  { font-size: .68rem; color: var(--text-muted); margin-top: 2px; font-weight: 500; }
    [data-sidebar="collapsed"] .brand-text { display: none; }
    [data-sidebar="collapsed"] .sidebar-brand { padding: 1rem .65rem; justify-content: center; }

    .sidebar-nav { flex: 1; padding: .65rem .5rem; overflow-y: auto; overflow-x: hidden; }
    .sidebar-section {
      font-size: .62rem; text-transform: uppercase; letter-spacing: .1em;
      color: var(--text-muted); padding: .85rem .75rem .35rem; font-weight: 700;
    }
    [data-sidebar="collapsed"] .sidebar-section { visibility: hidden; height: 8px; padding: 0; }

    .nav-item {
      display: flex; align-items: center; gap: .65rem; padding: .55rem .7rem;
      border-radius: 6px; color: var(--text-primary); cursor: pointer;
      font-size: .885rem; border: none; background: transparent; width: 100%;
      text-align: left; transition: background .12s, color .12s;
      position: relative;
    }
    .nav-item:hover { background: var(--bg-hover); }
    .nav-item.is-active { background: var(--mntox-verde-soft); color: var(--mntox-verde); font-weight: 600; }
    .nav-item.is-active::before {
      content: ""; position: absolute; left: -.5rem; top: 8px; bottom: 8px; width: 3px;
      background: var(--mntox-verde); border-radius: 0 3px 3px 0;
    }
    .nav-item .bi { font-size: 1.05rem; width: 20px; text-align: center; flex-shrink: 0; }
    .nav-badge {
      margin-left: auto; background: var(--bg-hover); color: var(--text-secondary);
      font-size: .7rem; padding: .1rem .45rem; border-radius: 999px; font-weight: 600;
      min-width: 22px; text-align: center;
    }
    .nav-item.is-active .nav-badge { background: var(--mntox-verde); color: white; }
    [data-sidebar="collapsed"] .nav-item span:not(.nav-badge),
    [data-sidebar="collapsed"] .nav-item .nav-badge { display: none; }
    [data-sidebar="collapsed"] .nav-item { justify-content: center; padding: .55rem; }

    .sidebar-footer {
      padding: .65rem; border-top: 1px solid var(--border);
      display: flex; gap: .4rem; align-items: center;
    }
    [data-sidebar="collapsed"] .sidebar-footer { flex-direction: column; padding: .5rem; }
    .sidebar-meta {
      flex: 1; font-size: .72rem; color: var(--text-muted);
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    [data-sidebar="collapsed"] .sidebar-meta { display: none; }

    /* OS badge — inspirado no Termius (mostra distro do host) */
    .os-badge {
      flex: 1; min-width: 0;
      display: inline-flex; align-items: center; gap: .5rem;
      padding: .25rem .35rem;
      border-radius: 6px;
      transition: background .12s;
    }
    .os-badge:hover { background: var(--bg-hover); }
    .os-badge-icon {
      flex-shrink: 0; display: inline-flex;
      width: 22px; height: 22px; align-items: center; justify-content: center;
    }
    .os-badge-icon svg { display: block; }
    .os-badge-text {
      display: flex; flex-direction: column; line-height: 1.1; min-width: 0;
    }
    .os-name {
      font-size: .76rem; font-weight: 600; color: var(--text-primary);
      overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .os-ver {
      font-size: .68rem; color: var(--text-muted);
      font-family: ui-monospace, "SF Mono", monospace;
    }
    [data-sidebar="collapsed"] .os-badge { justify-content: center; padding: .25rem; }

    /* MAIN */
    .main { display: flex; flex-direction: column; min-width: 0; }
    .topbar {
      background: var(--bg-card); border-bottom: 1px solid var(--border);
      padding: .65rem 1.25rem; display: flex; align-items: center; gap: .75rem;
      position: sticky; top: 0; z-index: 30; min-height: 60px;
    }
    .topbar h1 { font-size: 1.05rem; font-weight: 600; margin: 0; color: var(--text-primary); }
    .topbar-meta { font-size: .78rem; color: var(--text-muted); margin-left: .5rem; }
    .topbar-actions { margin-left: auto; display: flex; gap: .5rem; align-items: center; }
    .content { padding: 1.25rem; flex: 1; overflow-y: auto; }
    @media (max-width: 575.98px) { .content { padding: .875rem; } }

    /* Stats bar sticky — abaixo da topbar (60px), fora da área de scroll da tabela */
    .statsbar-sticky {
      position: sticky;
      top: 60px;
      z-index: 20;
      background: var(--bg-app);
      padding: .875rem 1.25rem .75rem;
      border-bottom: 1px solid var(--border);
    }
    @media (max-width: 575.98px) { .statsbar-sticky { padding: .75rem .875rem .625rem; } }

    /* ============================================================