/* ==========================================================================
   AULÃO — Página de Inscrição
   Depende de css/style.css (tokens — incluindo --error/--error-soft —,
   reset, header/footer, .btn, .eyebrow, .section-title, .ghost-word,
   .reveal já vêm de lá). Aqui só o que é específico do formulário de
   inscrição.
   --------------------------------------------------------------------------
   Sumário
   1. Utilitário
   2. Cabeçalho da página (reg-hero)
   3. Stepper
   4. Card do formulário + etapas
   5. Campos (inputs, select, choices, tamanhos)
   6. Aviso da camisa
   7. Resumo (etapa de confirmação) + checkboxes
   8. Botões e ações do formulário
   9. Estado de sucesso
   10. Responsividade
   ========================================================================== */

/* ==========================================================================
   1. UTILITÁRIO
   ========================================================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Indica, no menu, a página em que o visitante já está */
.header__link.is-current { color: var(--accent); }
.header__link.is-current::after { width: 100%; }

/* ==========================================================================
   2. CABEÇALHO DA PÁGINA
   ========================================================================== */
.reg-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(150px, 20vw, 210px) 0 clamp(56px, 8vw, 80px);
}

.reg-hero__inner { position: relative; z-index: 1; }

.reg-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(28px, 4vw, 40px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mute);
  transition: color var(--dur-fast) var(--ease-soft), gap var(--dur-fast) var(--ease-soft);
}

.reg-hero__back svg { width: 15px; height: 15px; }
.reg-hero__back:hover { color: var(--white); gap: 12px; }

.reg-hero__title { max-width: 20ch; }

.reg-hero__meta {
  margin-top: 18px;
  max-width: 60ch;
  font-family: var(--font-mono);
  font-size: clamp(11.5px, 1.1vw, 13px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
  line-height: 1.8;
}

/* ==========================================================================
   3. STEPPER
   ========================================================================== */
.reg-form-section { padding-bottom: clamp(90px, 12vw, 150px); }

.reg-form-section__inner { max-width: 800px; }

.stepper {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin-bottom: clamp(40px, 5vw, 56px);
}

.stepper__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 150px;
  flex-shrink: 0;
}

.stepper__circle {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--faint);
  transition: border-color var(--dur-med) var(--ease-soft), background var(--dur-med) var(--ease-soft),
    box-shadow var(--dur-med) var(--ease-soft), color var(--dur-med) var(--ease-soft);
}

.stepper__num {
  font-family: var(--font-mono);
  font-size: 13px;
  transition: opacity var(--dur-fast);
}

.stepper__check {
  position: absolute;
  width: 16px;
  height: 16px;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-soft);
}

.stepper__item.is-active .stepper__circle {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.stepper__item.is-complete .stepper__circle { background: var(--accent); border-color: var(--accent); }
.stepper__item.is-complete .stepper__num { opacity: 0; }
.stepper__item.is-complete .stepper__check { opacity: 1; transform: scale(1); color: var(--ink-deep); }

.stepper__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--faint);
  text-align: center;
  transition: color var(--dur-med);
}

.stepper__item.is-active .stepper__label,
.stepper__item.is-complete .stepper__label { color: var(--white); }

.stepper__line {
  position: relative;
  flex: 1;
  max-width: 90px;
  height: 1px;
  margin-top: 22px;
  background: var(--line);
  overflow: hidden;
}

.stepper__line i {
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out);
}

.stepper__line.is-filled i { transform: scaleX(1); }

.stepper-mobile { display: none; margin-bottom: 32px; }

.stepper-mobile__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 12px;
}

.stepper-mobile__bar {
  height: 4px;
  border-radius: 100px;
  background: var(--surface);
  border: 1px solid var(--line);
  overflow: hidden;
}

.stepper-mobile__bar span {
  display: block;
  height: 100%;
  width: 33.333%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.5s var(--ease-out);
}

/* ==========================================================================
   4. CARD DO FORMULÁRIO + ETAPAS
   ========================================================================== */
.reg-card {
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, var(--surface), var(--ink) 85%);
}

fieldset.reg-step { border: 0; margin: 0; padding: 0; min-width: 0; }

.reg-step { display: none; }

.reg-step.is-active {
  display: block;
  animation: stepIn 0.5s var(--ease-out);
}

@keyframes stepIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.reg-success { text-align: center; padding: clamp(12px, 2vw, 24px) 0; }

/* ==========================================================================
   5. CAMPOS
   ========================================================================== */
.reg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px clamp(16px, 2.4vw, 28px);
}

.reg-field { display: flex; flex-direction: column; gap: 9px; }
.reg-field--full,
.reg-field--wide { grid-column: 1 / -1; }

.reg-field label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--mute);
}

.reg-input {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-inline: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color var(--dur-fast) var(--ease-soft), box-shadow var(--dur-fast) var(--ease-soft);
}

.reg-input:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.reg-input__icon { width: 18px; height: 18px; color: var(--faint); flex-shrink: 0; }

.reg-input input,
.reg-input select {
  flex: 1;
  width: 100%;
  min-width: 0;
  padding-block: 14px;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
}

.reg-input input::placeholder { color: var(--faint); }

.reg-input select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 24px;
  cursor: pointer;
  color-scheme: dark;
}

.reg-input select option { background: var(--surface); color: var(--white); }

.reg-input__chevron {
  position: absolute;
  right: 16px;
  width: 16px;
  height: 16px;
  color: var(--faint);
  pointer-events: none;
}

.reg-input--date input { color-scheme: dark; }

/* Autofill do navegador não deve quebrar o tema escuro */
.reg-input input:-webkit-autofill,
.reg-input input:-webkit-autofill:hover,
.reg-input input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--white);
  -webkit-box-shadow: 0 0 0px 1000px var(--surface) inset;
  transition: background-color 9999s ease-in-out 0s;
}

.reg-error {
  display: block;
  min-height: 16px;
  font-family: var(--font-body);
  font-size: 12.5px;
  color: var(--error);
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-soft);
}

.reg-error.is-visible { opacity: 1; transform: translateY(0); }

.reg-field.has-error .reg-input { border-color: var(--error); }
.reg-field.has-error .reg-choices .reg-choice,
.reg-field.has-error .reg-sizes .reg-size { border-color: var(--error); }

/* Escolhas de opção única (Sexo) */
.reg-choices { display: flex; flex-wrap: wrap; gap: 10px; }

.reg-choice {
  padding: 12px 22px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--mute);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  transition: border-color var(--dur-fast) var(--ease-soft), color var(--dur-fast) var(--ease-soft),
    background var(--dur-fast) var(--ease-soft);
}

.reg-choice:hover { border-color: var(--accent-2); color: var(--white); }

.reg-choice.is-selected {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink-deep);
  font-weight: 600;
}

/* ==========================================================================
   6. AVISO DA CAMISA + TAMANHOS
   ========================================================================== */
.reg-notice {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  margin-bottom: clamp(28px, 4vw, 40px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: var(--accent-soft);
  color: var(--white);
  font-size: 14px;
}

.reg-notice__icon { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }
.reg-notice__icon svg { width: 100%; height: 100%; }

.reg-sizes { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

.reg-sizes__loading {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--faint);
}

.reg-sizes__group-label {
  flex-basis: 100%;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}

.reg-sizes__group-label:first-child { margin-top: 0; }

.reg-size {
  min-width: 64px;
  height: 56px;
  padding-inline: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--mute);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  transition: border-color var(--dur-fast) var(--ease-soft), color var(--dur-fast) var(--ease-soft),
    background var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-soft);
}

.reg-size:hover { border-color: var(--accent-2); color: var(--white); transform: translateY(-2px); }

.reg-size.is-selected {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink-deep);
  box-shadow: 0 10px 26px -10px var(--accent-glow);
}

.reg-size--esgotado,
.reg-size:disabled {
  flex-direction: column;
  gap: 2px;
  height: auto;
  min-height: 56px;
  padding-block: 8px;
  opacity: 0.42;
  color: var(--faint);
  cursor: not-allowed;
  text-decoration: line-through;
  text-decoration-color: rgba(255, 255, 255, 0.35);
}

.reg-size--esgotado:hover, .reg-size:disabled:hover { border-color: var(--line); color: var(--faint); transform: none; }

.reg-size__tag {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--error);
}

/* ==========================================================================
   7. RESUMO + CHECKBOXES
   ========================================================================== */
.reg-summary {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: clamp(28px, 4vw, 40px);
}

.reg-summary__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.reg-summary__row span:first-child {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--faint);
  flex-shrink: 0;
}

.reg-summary__row span:last-child {
  color: var(--white);
  font-weight: 500;
  text-align: right;
}

.reg-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 12px 0;
  cursor: pointer;
}

.reg-checkbox input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.reg-checkbox__box {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  border: 1.5px solid var(--line);
  color: transparent;
  transition: background var(--dur-fast) var(--ease-soft), border-color var(--dur-fast) var(--ease-soft);
}

.reg-checkbox__box svg { width: 14px; height: 14px; }

.reg-checkbox input:checked + .reg-checkbox__box {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink-deep);
}

.reg-checkbox input:focus-visible + .reg-checkbox__box {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.reg-checkbox__text { font-size: 14px; line-height: 1.55; color: var(--mute); }

.reg-error--checkbox { margin-bottom: 4px; margin-top: -8px; }

.reg-error--general { text-align: center; margin-top: 14px; }

/* ==========================================================================
   8. BOTÕES E AÇÕES
   ========================================================================== */
.btn--ghost {
  padding: 16px 30px;
  font-size: 14.5px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--white);
}

.btn--ghost:hover { border-color: var(--white); background: rgba(255, 255, 255, 0.04); }

.btn__arrow--back { order: -1; }

.reg-step__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(32px, 4vw, 44px);
  padding-top: clamp(24px, 3vw, 32px);
  border-top: 1px solid var(--line-soft);
}

.reg-step__actions--end { justify-content: flex-end; }

.reg-submit { position: relative; min-width: 260px; }

.reg-submit__spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  margin: -9px 0 0 -9px;
  border: 2px solid rgba(10, 10, 10, 0.25);
  border-top-color: var(--ink-deep);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--dur-fast);
}

.reg-submit.is-loading { pointer-events: none; }
.reg-submit.is-loading .reg-submit__label { opacity: 0; }
.reg-submit.is-loading .reg-submit__spinner { opacity: 1; animation: spin 0.8s linear infinite; }

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

/* ==========================================================================
   9. ESTADO DE SUCESSO
   ========================================================================== */
.reg-success__icon {
  display: inline-flex;
  width: 64px;
  height: 64px;
  color: var(--accent);
  filter: drop-shadow(0 0 22px var(--accent-glow));
  margin-bottom: 24px;
}

.reg-success__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 14px;
}

.reg-success__text {
  max-width: 46ch;
  margin: 0 auto clamp(28px, 4vw, 36px);
  color: var(--mute);
  line-height: 1.7;
}

/* ==========================================================================
   10. RESPONSIVIDADE
   ========================================================================== */
@media (max-width: 780px) {
  .stepper { display: none; }
  .stepper-mobile { display: block; }
}

@media (max-width: 640px) {
  .reg-grid { grid-template-columns: 1fr; }
  .reg-card { padding: 24px 18px; }

  .reg-step__actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .reg-step__actions .btn { width: 100%; justify-content: center; }
  .reg-submit { min-width: 0; }

  .reg-size { flex: 1 1 27%; }
  .reg-choices { flex-direction: column; }
  .reg-choice { text-align: center; }
}