/* ============================================================
   layout.css — Shell de la SPA: sidebar + topbar + vista.
   Responsive: sidebar colapsable bajo 900 px.
   ============================================================ */

#app {
  display: grid;
  grid-template-columns: 264px 1fr;
  min-height: 100dvh;
}

/* ---------- Sidebar ---------- */
#sidebar {
  background: var(--superficie);
  border-right: 1px solid var(--borde);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow-y: auto;
}

.sidebar-marca {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .9rem 1rem;
  border-bottom: 1px solid var(--borde);
}
.sidebar-marca .marca-icono {
  font-size: 1.5rem;
  color: var(--primario);
}
.sidebar-marca strong { display: block; font-size: var(--fs-md); font-weight: 700; }
.sidebar-marca small { display: block; font-size: var(--fs-xs); }

#nav-modulos { padding: .5rem 0 1.5rem; }

.nav-grupo {
  margin: .8rem 0 .15rem;
  padding: 0 1rem;
  font-size: var(--fs-2xs);
  font-weight: 700;
  letter-spacing: var(--trazo-mayus);
  text-transform: uppercase;
  color: var(--texto-2);
}

.nav-item {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  width: 100%;
  padding: .42rem 1rem .42rem 1.15rem;
  border: 0;
  background: none;
  color: var(--texto);
  font: inherit;
  font-size: var(--fs-sm);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--superficie-2); }
.nav-item[aria-current="page"] {
  background: var(--primario-suave);
  border-left-color: var(--primario);
  font-weight: 600;
}
.nav-item .nav-clausula {
  margin-left: auto;
  font-size: var(--fs-2xs);
  color: var(--texto-2);
  white-space: nowrap;
}

/* ---------- Panel principal ---------- */
#panel-principal { display: flex; flex-direction: column; min-width: 0; }

#topbar {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .55rem 1.25rem;
  background: var(--superficie);
  border-bottom: 1px solid var(--borde);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-titulo {
  margin: 0;
  font-size: var(--fs-md);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.topbar-acciones { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; justify-content: flex-end; }
.campo-inline { display: inline-flex; }
.topbar-acciones .select { max-width: 170px; }

#btn-menu { display: none; }

#vista {
  padding: 1.25rem;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  #app { grid-template-columns: 1fr; }
  #btn-menu { display: inline-flex; }
  #sidebar {
    position: fixed;
    inset: 0 30% 0 0;
    min-width: 250px;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform .2s ease;
    box-shadow: var(--sombra-alta);
  }
  #sidebar.abierto { transform: translateX(0); }
  .velo-sidebar {
    position: fixed; inset: 0; z-index: 39;
    background: rgba(0, 0, 0, .45);
  }
  .topbar-acciones .select { max-width: 130px; }
}

@media (max-width: 560px) {
  #vista { padding: .85rem; }
  #sel-usuario, #sel-empresa { display: none; }
  .topbar-acciones .select { max-width: 120px; }
}