/* ============================================================
   layout.css — estrutura do app: sidebar, topbar, conteúdo
   ============================================================ */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  min-height: 100vh;
  transition: grid-template-columns var(--transition);
}
.app-shell.is-collapsed { grid-template-columns: var(--sidebar-w-collapsed) 1fr; }

/* ---------------- Sidebar ---------------- */
.sidebar {
  grid-area: sidebar;
  background: var(--bg-sidebar);
  color: var(--text-on-brand);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  z-index: 40;
}

.sidebar__brand {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0 var(--sp-5);
  flex-shrink: 0;
}
.sidebar__logo {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand-green-500), var(--brand-petrol-600));
  display: grid; place-items: center;
  color: #fff; font-size: 1.15rem;
  flex-shrink: 0;
}
.sidebar__brand-text { display: flex; flex-direction: column; line-height: 1.1; overflow: hidden; }
.sidebar__brand-text strong {
  font-family: var(--font-display);
  font-size: 1.02rem; color: #fff; white-space: nowrap;
}
.sidebar__brand-text span { font-size: var(--fs-xs); color: var(--text-on-brand-muted); white-space: nowrap; }

.sidebar__nav { flex: 1; overflow-y: auto; padding: var(--sp-3) var(--sp-3) var(--sp-6); }
.sidebar__group-label {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-on-brand-muted); padding: var(--sp-4) var(--sp-3) var(--sp-2); font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 10px var(--sp-3); margin-bottom: 2px;
  border-radius: var(--radius-sm);
  color: var(--text-on-brand); cursor: pointer;
  font-size: var(--fs-base); font-weight: 500;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap; text-decoration: none;
}
.nav-item:hover { background: var(--bg-sidebar-hover); text-decoration: none; color: #fff; }
.nav-item.is-active { background: var(--bg-sidebar-active); color: #fff; }
.nav-item i { width: 20px; text-align: center; font-size: 1rem; flex-shrink: 0; }
.nav-item .nav-item__badge {
  margin-left: auto; font-size: 0.62rem; padding: 2px 7px;
  background: var(--brand-amber-500); color: #3a2a06;
  border-radius: var(--radius-pill); font-weight: 700;
}

.sidebar__footer {
  flex-shrink: 0; padding: var(--sp-3);
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* Estado colapsado */
.is-collapsed .sidebar__brand-text,
.is-collapsed .sidebar__group-label,
.is-collapsed .nav-item span,
.is-collapsed .nav-item__badge { display: none; }
.is-collapsed .nav-item { justify-content: center; padding: 10px; }
.is-collapsed .sidebar__brand { justify-content: center; padding: 0; }

/* ---------------- Topbar ---------------- */
.topbar {
  grid-area: topbar;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: var(--sp-4);
  padding: 0 var(--sp-6);
  position: sticky; top: 0; z-index: 30;
}
.topbar__toggle {
  background: transparent; border: none; color: var(--text);
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 1.1rem;
  transition: background var(--transition);
}
.topbar__toggle:hover { background: var(--bg-app); }
.topbar__title { flex: 1; min-width: 0; }
.topbar__title h1 { font-size: var(--fs-md); margin: 0; }
.topbar__title p { font-size: var(--fs-xs); color: var(--text-muted); margin: 0; }

.topbar__search {
  display: flex; align-items: center; gap: var(--sp-2);
  background: var(--bg-app); border: 1px solid var(--border);
  border-radius: var(--radius-pill); padding: 7px var(--sp-4);
  min-width: 220px; color: var(--text-muted);
}
.topbar__search input {
  border: none; background: transparent; outline: none;
  color: var(--text); font-size: var(--fs-sm); width: 100%;
}
.topbar__actions { display: flex; align-items: center; gap: var(--sp-2); }

.icon-btn {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-surface);
  color: var(--text); cursor: pointer; font-size: 1rem;
  display: grid; place-items: center; transition: all var(--transition);
}
.icon-btn:hover { background: var(--bg-app); border-color: var(--border-strong); }

.topbar__user {
  display: flex; align-items: center; gap: var(--sp-3);
  padding-left: var(--sp-3); margin-left: var(--sp-1);
  border-left: 1px solid var(--border);
}
.avatar {
  width: 38px; height: 38px; border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--brand-green-500), var(--brand-petrol-600));
  color: #fff; display: grid; place-items: center; font-weight: 600; font-size: var(--fs-sm);
}
.topbar__user-info { line-height: 1.2; }
.topbar__user-info strong { font-size: var(--fs-sm); color: var(--text-strong); display: block; }
.topbar__user-info span { font-size: var(--fs-xs); color: var(--text-muted); }

/* ---------------- Área principal ---------------- */
.main {
  grid-area: main;
  padding: var(--sp-6);
  overflow-y: auto;
}
.page-head { margin-bottom: var(--sp-5); }
.page-head h2 { margin-bottom: 2px; }
.page-head p { color: var(--text-muted); margin: 0; font-size: var(--fs-sm); }

/* Grids reutilizáveis */
.grid { display: grid; gap: var(--sp-5); }
.grid-kpi { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: 2fr 1fr; }

/* ---------------- Backdrop mobile ---------------- */
.sidebar-backdrop {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.45); z-index: 39;
}

/* ---------------- Responsivo ---------------- */
@media (max-width: 1100px) {
  .grid-kpi { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-areas: "topbar" "main";
  }
  .sidebar {
    position: fixed; left: 0; top: 0;
    width: var(--sidebar-w);
    transform: translateX(-100%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-lg);
  }
  .app-shell.mobile-open .sidebar { transform: translateX(0); }
  .app-shell.mobile-open .sidebar-backdrop { display: block; }
  .topbar__search { display: none; }
  .topbar__user-info { display: none; }
  .main { padding: var(--sp-4); }
}
@media (max-width: 520px) {
  .grid-kpi { grid-template-columns: 1fr; }
}