.app-shell { display: flex; min-height: 100vh; }

/* ---------- Sidebar ---------- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  padding: var(--sp-4) var(--sp-3);
  position: fixed; top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  display: flex; flex-direction: column;
  z-index: 30;
}
.sidebar .brand {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-2) var(--sp-4);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--sp-3);
  min-height: 56px;
}
.sidebar .brand img { max-height: 40px; max-width: 150px; object-fit: contain; }
.sidebar .brand .brand-nome { font-weight: 700; font-size: var(--fs-lg); color: var(--text); line-height: 1.2; }
.sidebar .brand .brand-sub { font-size: var(--fs-xs); color: var(--text-faint); }
.sidebar .nav-secao {
  font-size: 11px; text-transform: uppercase; letter-spacing: .8px;
  color: var(--text-faint); padding: var(--sp-3) var(--sp-3) var(--sp-1);
}
.sidebar .nav-item {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 8px var(--sp-3);
  border-radius: var(--radius-sm); color: var(--text-dim);
  margin-bottom: 2px; font-size: var(--fs-sm);
}
.sidebar .nav-item svg { width: 16px; height: 16px; flex-shrink: 0; opacity: .85; }
.sidebar .nav-item:hover { background: var(--surface); color: var(--text); }
.sidebar .nav-item.active { background: var(--accent-soft); color: var(--accent); }
.sidebar .nav-item.breve { color: var(--text-faint); }
.sidebar .nav-item > span:first-of-type { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar .nav-item .tag-breve {
  margin-left: auto; font-size: 9px; padding: 0 5px; border-radius: 999px; white-space: nowrap; flex-shrink: 0;
  border: 1px solid var(--border); color: var(--text-faint); line-height: 16px;
}
.sidebar .rodape { margin-top: auto; padding: var(--sp-4) var(--sp-3) 0; font-size: 11px; color: var(--text-faint); }

/* ---------- Area principal ---------- */
.main { flex: 1; margin-left: var(--sidebar-w); min-width: 0; }

.topbar {
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  padding: 0 var(--sp-5);
  background: var(--surface-glass);
  backdrop-filter: var(--blur);
  position: sticky; top: 0; z-index: 20;
}
.topbar .titulo-pagina { font-weight: 600; color: var(--text-dim); font-size: var(--fs-sm); }
.topbar .usuario { display: flex; align-items: center; gap: var(--sp-3); font-size: var(--fs-sm); }
.topbar .usuario .perfil { color: var(--text-faint); font-size: var(--fs-xs); }
.topbar .menu-toggle { display: none; }

.content { padding: var(--sp-5); max-width: 1440px; }

.page-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: var(--sp-4);
  margin-bottom: var(--sp-5); flex-wrap: wrap;
}
.page-head .sub { color: var(--text-dim); margin-top: 2px; }
.page-head .acoes { display: flex; gap: var(--sp-2); flex-wrap: wrap; }

.grid { display: grid; gap: var(--sp-4); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: 1 / -1; }
.stack > * + * { margin-top: var(--sp-4); }
.row { display: flex; gap: var(--sp-3); align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }

/* ---------- Tela de login ---------- */
.auth-shell {
  min-height: 100vh; display: grid; place-items: center; padding: var(--sp-5);
  background:
    radial-gradient(900px 500px at 15% 10%, var(--accent-soft), transparent 60%),
    radial-gradient(700px 400px at 90% 90%, rgba(78,163,255,.06), transparent 60%),
    var(--bg);
}
.auth-card { width: 100%; max-width: 400px; padding: var(--sp-6); }
.auth-card .auth-logo { text-align: center; margin-bottom: var(--sp-5); }
.auth-card .auth-logo img { max-height: 64px; max-width: 220px; object-fit: contain; }
.auth-card .auth-logo .nome { font-size: var(--fs-xl); font-weight: 700; }
.auth-card .auth-logo .sub { color: var(--text-dim); font-size: var(--fs-sm); }

/* ---------- Responsivo ---------- */
@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .sidebar { transform: translateX(-100%); transition: transform .2s; }
  .sidebar.aberta { transform: none; box-shadow: var(--shadow); }
  .main { margin-left: 0; }
  .topbar .menu-toggle { display: inline-flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .span-2, .span-3 { grid-column: auto; }
  .content { padding: var(--sp-4); }
}