.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 12px;
  font-weight: 700;
  transition: 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(34, 197, 94, 0.18);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border-color: rgba(148, 163, 184, 0.25);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.04);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: #7dd3fc;
  font-weight: 700;
  font-size: 14px;
}

/* =========================
   Cards e superfícies reutilizáveis
========================= */

.surface-card {
  background: #111827;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 22px;
}

.surface-card-soft {
  background: #0b1220;
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 18px;
}

.surface-card-padding-lg {
  padding: 28px;
}

.surface-card-padding-md {
  padding: 24px;
}

.surface-card-padding-sm {
  padding: 20px;
}

/* =========================
   Espaços reservados para anúncios (sem AdSense ativo)
========================= */

.ad-slot {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px dashed rgba(148, 163, 184, 0.5);
  background: rgba(30, 41, 59, 0.65);
  color: #cbd5e1;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  text-align: center;
}

.ad-slot span {
  max-width: 16em;
}

/* Placeholder interno oculto até AdSense; o .ad-slot mantém min-height e borda */
.ad-slot-inner {
  display: none !important;
}

/* Sempre visíveis (mobile + desktop). Vêm depois de qualquer outra regra de display do rail. */
.ad-slot.ad-slot--inline,
.ad-slot.ad-slot--content {
  display: flex !important;
  visibility: visible !important;
  opacity: 1 !important;
  width: 100%;
  max-width: 100%;
  margin: 22px 0;
}

/* Visibilidade do rail lateral fica escopada em calculadora.css (.calculator-ad-rail). */

@media (max-width: 768px) {
  .btn {
    min-height: 46px;
  }

  .ad-slot {
    min-height: 96px;
    padding: 12px 14px;
  }

  .ad-slot.ad-slot--inline,
  .ad-slot.ad-slot--content {
    margin: 18px 0;
  }
}

@media (max-width: 480px) {
  .ad-slot {
    min-height: 84px;
    border-radius: 12px;
  }

  .ad-slot span {
    max-width: 100%;
    font-size: 12px;
  }
}