/*
 * Botões com desenho compacto (40px), mas área tocável de 48px:
 * o ::after invisível estende o alvo de toque sem ocupar espaço na tela.
 */
.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--control-height);
  padding: 0 var(--space-4);
  border: var(--border-width) solid var(--color-border-soft);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s;
}

.button::after {
  content: "";
  position: absolute;
  inset: calc((var(--touch-target) - var(--control-height)) / -2) 0;
}

.button:hover { background: var(--color-surface-muted); border-color: var(--color-border); color: var(--color-text); }

.button__icon { width: 1.25rem; height: 1.25rem; }

.button--primary {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-button);
}

.button--primary:hover { background: var(--color-primary-strong); border-color: var(--color-primary-strong); color: var(--color-on-primary); }

.button--danger { color: var(--color-danger); }
.button--danger:hover { background: var(--color-danger-soft); border-color: var(--color-danger); color: var(--color-danger); }

.button--ghost { border-color: transparent; background: transparent; color: var(--color-primary); }
.button--ghost:hover { background: var(--color-primary-soft); border-color: transparent; color: var(--color-primary-strong); }

.button--block { display: flex; width: 100%; }

.button[disabled], .button[aria-disabled="true"] { opacity: 0.6; cursor: not-allowed; }

.button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* button_to gera um <form>; ele não pode quebrar a linha de botões */
.button-row form { display: contents; }

@media (min-width: 640px) {
  .button--block { display: inline-flex; width: auto; }
}