/* ── App grid ─────────────────────────────────────────────────────────── */

#app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  height: 100vh;
  transition: grid-template-columns 0.22s ease;
}

body.sidebar-collapsed #app {
  grid-template-columns: var(--sidebar-collapsed-w) 1fr;
}

/* ── Top bar ─────────────────────────────────────────────────────────── */

#topbar {
  grid-column: 1 / -1;
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

#sidebar-toggle {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  border-radius: 4px;
  padding: 4px;
  transition: color 0.15s, background 0.15s;
}
#sidebar-toggle:hover { color: var(--text); background: var(--border); }
#sidebar-toggle svg { width: 18px; height: 18px; }

#topbar-title {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

#status {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.82rem;
}

/* ── Main content + views ─────────────────────────────────────────────── */

#content {
  grid-column: 2;
  grid-row: 2;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

.view { display: none; flex-direction: column; gap: 1.25rem; min-width: 0; }
.view.active { display: flex; }

.view-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}
.view-header h2 { font-size: 1.25rem; font-weight: 600; }
.view-subtitle { color: var(--muted); font-size: 0.88rem; }

.view-section { display: flex; flex-direction: column; gap: 0.75rem; }
.view-section h3 { font-size: 0.88rem; font-weight: 500; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

/* ── View toolbars ───────────────────────────────────────────────────── */

#inventory-controls,
#controls-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-left: auto;
}