/* =============================================
   NAV — Barra de navegación inferior
   ============================================= */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--nav-h) + var(--safe-bottom));
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  padding-top: 6px;
  padding-bottom: var(--safe-bottom);
  padding-left:  var(--safe-left);
  padding-right: var(--safe-right);
  z-index: 100;
}

.nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  border: none;
  background: none;
  flex: 1;
  max-width: 72px;
  transition: background 0.15s;
}

.nav-btn:active { background: var(--primary-50); }

.nav-btn.active { background: var(--primary-50); }

.nav-btn i {
  font-size: 24px;
  color: var(--text3);
  transition: color 0.15s;
}

.nav-btn.active i { color: var(--primary); }

.nav-label {
  font-size: 10px;
  color: var(--text3);
  font-weight: 500;
  transition: color 0.15s;
}

.nav-btn.active .nav-label { color: var(--primary); }