.app-header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2);
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  max-width: 640px;
  margin: 0 auto;
}

.app-header__logo,
.app-header__logo-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-white);
  display: inline-block;
}

.app-header__nombre {
  font-weight: 600;
  font-size: 1.1rem;
}

.app-main {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.app-footer {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--space-2);
  color: var(--color-muted);
  font-size: 0.85rem;
  text-align: center;
}

@media (min-width: 768px) {
  .app-main {
    padding: var(--space-3);
  }
}