/* ═══════════════════════════════════════════════════════════
   BUTTONS COMPONENT
   Estilizações e micro-interações de botões
   ═══════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 14px 28px;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-none);
  transition: all var(--dur-base) var(--ease-smooth);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  text-decoration: none;
  white-space: nowrap; /* Não quebra linha em hipótese alguma */
  flex-shrink: 0;
}

.btn > * {
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-content);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-base) var(--ease-smooth);
  z-index: -1;
}

.btn:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-content);
  border: 1px solid var(--color-primary);
}

.btn--primary:hover {
  color: var(--color-surface);
  border-color: var(--color-content);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-content-60);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  color: var(--color-surface);
  border-color: var(--color-content);
}

.btn--outline-large {
  background: transparent;
  color: var(--color-content);
  border: 1px solid var(--color-border);
  padding: 18px 40px;
  font-size: var(--fs-md);
}

.btn--outline-large:hover {
  color: var(--color-surface);
  border-color: var(--color-content);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ── Responsivo Mobile para Botões ────────────────────────── */
@media (max-width: 640px) {
  .btn {
    padding: 12px 20px;
    font-size: var(--fs-xs);
    gap: 6px;
  }
}

@media (max-width: 400px) {
  .btn {
    padding: 10px 14px;
    font-size: clamp(0.75rem, 3.2vw, 0.8125rem);
    gap: 4px;
  }
}