/* ══════════════════════════════════════════════
   BUTTONS.CSS — Compra Turbo
   Botoes primarios, ghost e CTA alternativo
   Dependencias: tokens.css
   Carregar apos layout.css e antes de components.css
   ══════════════════════════════════════════════ */

/* ── BOTOES ────────────────────────────────── */

/* Botao primario — CTA laranja */
.btn--primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--brand-orange);
  color: var(--text-white);
  padding: 16px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--ff-heading);
  font-weight: 800;
  font-size: 14px;
  box-shadow: var(--shadow-cta);
  transition: background var(--duration-fast) ease,
              transform var(--duration-fast) ease,
              box-shadow var(--duration-fast) ease;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary:hover {
  background: var(--brand-orange-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cta-hover);
}

/* Seta no botao */
.btn--primary svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-fast) ease;
  flex-shrink: 0;
}

.btn--primary:hover svg {
  transform: translateX(3px);
}

/* Estado "enviando" — desabilita interação + spinner substitui a seta.
   Usado por js/form.js durante fetch ao Formspree. */
.btn--primary.loading,
.btn--primary[disabled] {
  opacity: 0.85;
  cursor: wait;
  pointer-events: none;
  transform: none;
}

.btn--primary.loading:hover {
  transform: none;
  box-shadow: var(--shadow-cta);
}

.btn--primary.loading svg {
  display: none;
}

.btn--primary.loading::after {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: var(--text-white);
  border-radius: 50%;
  animation: btnSpinner 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes btnSpinner {
  to { transform: rotate(360deg); }
}

/* Botao ghost — link com underline */
.btn--ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted-3);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--duration-fast) ease,
              border-color var(--duration-fast) ease;
}

.btn--ghost:hover {
  color: var(--text-white);
  border-bottom-color: var(--text-white);
}

/* Versao para fundo claro */
.section--light .btn--ghost:hover {
  color: var(--text-dark);
  border-bottom-color: var(--text-dark);
}

/* Botao para secao CTA (fundo laranja → texto preto) */
.btn--cta-dark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-black);
  color: var(--text-white);
  padding: 18px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--ff-heading);
  font-weight: 800;
  font-size: 15px;
  transition: background var(--duration-fast) ease,
              transform var(--duration-fast) ease;
}

.btn--cta-dark:hover {
  background: var(--black-alpha-80);
  transform: translateY(-2px);
}