/* AXION — Estrutura da aplicação: sidebar, topbar e área de conteúdo. */

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

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--bg-sidebar);
  color: var(--text-on-dark);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 1px solid var(--border-dark);
  z-index: 40;
}
.sidebar__brand {
  display: flex; align-items: center; gap: var(--sp-3);
  height: var(--topbar-h); padding: 0 var(--sp-4);
  border-bottom: 1px solid var(--border-dark); flex: none;
}
.sidebar__logo {
  width: 30px; height: 30px; flex: none; border-radius: 9px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 14px;
}
.sidebar__name { font-weight: 700; letter-spacing: .12em; font-size: var(--fs-sm); color: #fff; }
.sidebar__phase { font-size: 10px; color: var(--text-on-dark-muted); letter-spacing: .06em; }
.sidebar__nav { flex: 1 1 auto; overflow-y: auto; padding: var(--sp-3) var(--sp-2) var(--sp-6); }
.sidebar__group-label {
  font-size: 10px; text-transform: uppercase; letter-spacing: .12em;
  color: var(--text-on-dark-muted); padding: var(--sp-4) var(--sp-3) var(--sp-2);
}
.nav-item {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 8px var(--sp-3); border-radius: var(--radius);
  color: var(--text-on-dark); font-size: var(--fs-base); cursor: pointer;
  border: none; background: none; width: 100%; text-align: left;
  transition: background var(--transition), color var(--transition);
}
.nav-item:hover { background: var(--bg-sidebar-hover); text-decoration: none; color: #fff; }
.nav-item.is-active { background: var(--bg-sidebar-active); color: #fff; font-weight: 600; }
.nav-item.is-active .nav-item__icon { color: var(--color-accent); }
.nav-item__icon { width: 18px; height: 18px; flex: none; color: var(--text-on-dark-muted); }
.nav-item__label { flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item__phase {
  font-size: 9.5px; padding: 1px 6px; border-radius: var(--radius-full);
  background: rgba(255, 255, 255, .08); color: var(--text-on-dark-muted); flex: none;
}
.sidebar__footer { flex: none; padding: var(--sp-3); border-top: 1px solid var(--border-dark); }

.app-shell.is-collapsed .sidebar__name,
.app-shell.is-collapsed .sidebar__phase,
.app-shell.is-collapsed .sidebar__group-label,
.app-shell.is-collapsed .nav-item__label,
.app-shell.is-collapsed .nav-item__phase { display: none; }
.app-shell.is-collapsed .nav-item { justify-content: center; padding: 10px; }
.app-shell.is-collapsed .sidebar__brand { justify-content: center; padding: 0; }

/* ---------- Topbar ---------- */
.topbar {
  height: var(--topbar-h);
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 0 var(--sp-5);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 30;
}
.topbar__search {
  display: flex; align-items: center; gap: var(--sp-2);
  background: var(--bg-surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 6px var(--sp-3);
  color: var(--text-muted); cursor: pointer; min-width: 260px;
  transition: border-color var(--transition);
}
.topbar__search:hover { border-color: var(--border-strong); }
.topbar__kbd {
  margin-left: auto; font-size: 10.5px; border: 1px solid var(--border);
  border-radius: 5px; padding: 1px 5px; color: var(--text-faint); background: var(--bg-surface);
}

/* ---------- Área de conteúdo ---------- */
.main { display: flex; flex-direction: column; min-width: 0; }
.page { padding: var(--sp-6); max-width: 1560px; width: 100%; margin: 0 auto; }
.page__header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sp-4); margin-bottom: var(--sp-5); flex-wrap: wrap; }
.page__title { display: flex; flex-direction: column; gap: 2px; }
.page__subtitle { color: var(--text-muted); font-size: var(--fs-base); }
.page__actions { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }

.breadcrumb { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-sm); color: var(--text-muted); margin-bottom: var(--sp-2); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb__sep { color: var(--text-faint); }

/* ---------- Responsivo ---------- */
.sidebar__backdrop { display: none; }

@media (max-width: 1024px) {
  .app-shell, .app-shell.is-collapsed { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w);
    transform: translateX(-100%); transition: transform var(--transition); z-index: 50;
  }
  .app-shell.is-mobile-open .sidebar { transform: translateX(0); }
  .app-shell.is-mobile-open .sidebar__backdrop {
    display: block; position: fixed; inset: 0; background: rgba(8, 11, 18, .55); z-index: 45;
  }
  .app-shell.is-collapsed .nav-item__label,
  .app-shell.is-collapsed .sidebar__name,
  .app-shell.is-collapsed .sidebar__group-label { display: block; }
  .app-shell.is-collapsed .nav-item { justify-content: flex-start; padding: 8px var(--sp-3); }
  .topbar__search { min-width: 0; flex: 1 1 auto; }
  .page { padding: var(--sp-4); }
}

@media (max-width: 640px) {
  .topbar { padding: 0 var(--sp-3); }
  .topbar__label { display: none; }
  .page__header { flex-direction: column; align-items: stretch; }
}