/* ============================================================
   COMPONENTES — botões, formulário, WhatsApp flutuante
   ============================================================ */
/* Botões — pill */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 52px;
  padding: 14px 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn i {
  font-size: 0.85em;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--primary);
  color: #0B0B0B;
}

.btn--primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 12px 32px -12px rgba(200, 169, 107, 0.45);
}

.btn--ghost {
  border-color: rgba(245, 242, 234, 0.28);
  color: var(--heading);
  background: rgba(11, 11, 11, 0.25);
}

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

.btn--sm {
  min-height: 44px;
  padding: 10px 24px;
  font-size: var(--text-sm);
}

.btn--block {
  width: 100%;
}

/* ============================================================
   FORMULÁRIO
   ============================================================ */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form__titulo {
  font-family: var(--font-heading);
  font-size: var(--title-sm);
  font-weight: 500;
  color: var(--heading);
}

.form__subtitulo {
  margin-top: -6px;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-light);
  max-width: 44ch;
}

.form__campo {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form__campo label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
}

.form__opcional {
  font-weight: 300;
  text-transform: none;
  letter-spacing: 0.06em;
  color: var(--text-light);
}

.form input,
.form textarea,
.form select {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  background: var(--bg-primary);
  color: var(--heading);
  font-size: var(--text-base);
  font-weight: 300;
  transition: border-color var(--transition), background-color var(--transition);
}

.form input::placeholder,
.form textarea::placeholder {
  color: rgba(140, 137, 130, 0.65);
}

.form input:hover,
.form textarea:hover,
.form select:hover {
  border-color: rgba(200, 169, 107, 0.45);
}

.form input:focus,
.form textarea:focus,
.form select:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-secondary);
}

.form textarea {
  resize: vertical;
  min-height: 110px;
}

/* Select custom */
.form__select-wrap {
  position: relative;
}

.form__select-wrap select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 44px;
  cursor: pointer;
}

.form__select-wrap select option {
  background: var(--bg-secondary);
  color: var(--heading);
}

.form__select-icon {
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: var(--text-xs);
  color: var(--text-light);
}

/* Estado de erro */
.form input[aria-invalid="true"],
.form textarea[aria-invalid="true"] {
  border-color: #b3543f;
}

.form__erro {
  font-size: var(--text-xs);
  color: #d98a74;
}

/* Botão enviar — estados */
#botao-enviar {
  margin-top: var(--space-1);
}

#botao-enviar .form__btn-loading {
  display: none;
}

#botao-enviar.is-loading .form__btn-label {
  display: none;
}

#botao-enviar.is-loading .form__btn-loading {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.form__sucesso {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border: 1px solid rgba(102, 138, 114, 0.5);
  border-radius: var(--radius-input);
  background: rgba(102, 138, 114, 0.08);
  color: #a8c4af;
  font-size: var(--text-sm);
}

.form__sucesso i {
  color: var(--success);
}

.form__nota {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--text-light);
  text-align: center;
}

/* ============================================================
   WHATSAPP FLUTUANTE
   ============================================================ */
.wa-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 150;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  /* Área de toque 60px (borda invisível) */
  padding: 8px;
}

.wa-float__icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #0B0B0B;
  font-size: 1.5rem;
  box-shadow: 0 16px 40px -12px rgba(200, 169, 107, 0.55);
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}

.wa-float:hover .wa-float__icon,
.wa-float:focus-visible .wa-float__icon {
  background: var(--primary-hover);
  transform: scale(1.06);
}

/* Pulse discreto */
.wa-float__icon::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(200, 169, 107, 0.65);
  animation: wa-pulse 3s ease-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .wa-float__icon::after {
    animation: none;
  }
}

@keyframes wa-pulse {
  0% {
    transform: scale(1);
    opacity: 0.9;
  }
  70% {
    transform: scale(1.45);
    opacity: 0;
  }
  100% {
    transform: scale(1.45);
    opacity: 0;
  }
}

.wa-float__icon {
  position: relative;
}

/* Tooltip */
.wa-float__tooltip {
  position: absolute;
  right: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  padding: 10px 16px;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  color: var(--heading);
  font-size: var(--text-sm);
  font-weight: 400;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  pointer-events: none;
}

.wa-float:hover .wa-float__tooltip,
.wa-float:focus-visible .wa-float__tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

/* ============================================================
   SCROLL TO TOP — canto inferior esquerdo
   ============================================================ */
.to-top {
  position: fixed;
  left: 24px;
  bottom: 24px;
  z-index: 140;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: rgba(23, 23, 23, 0.85);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--heading);
  font-size: 0.9rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), visibility var(--transition),
              transform var(--transition), border-color var(--transition),
              background-color var(--transition), color var(--transition);
  cursor: pointer;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--bg-primary);
}

.to-top:focus-visible {
  outline-offset: 2px;
}