/* ==========================================================================
   Component: Method
   ========================================================================== */

.method {
  margin-inline: 0;
  padding-block: 0;
  background-color: transparent;
  border-radius: 0;
  color: var(--color-fg);
}

.method__inner {
  --container-fluid-padding: 0;

  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 1024px) {
  .method__inner {
    /* Sem gap e com colunas iguais, a fronteira entre elas cai exatamente
       no meio da viewport (o padding do container é simétrico). É nela que
       a timeline se ancora para a linha ficar no eixo da página. */
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0;
    background-image:
      linear-gradient(90deg, var(--color-divider) 1px, transparent 1px),
      linear-gradient(90deg, var(--color-divider) 1px, transparent 1px),
      linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
    background-position:
      var(--space-16) top,
      50% top,
      calc(100% - var(--space-16)) top;
    background-repeat: no-repeat;
    background-size: 1px 100%, 1px 100%, 1px 100%;
  }
}

/* --- Intro (fixa no desktop) --- */

.method__intro {
  --method-title-width: 16ch;

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

@media (min-width: 1024px) {
  .method__intro {
    align-self: start;
    justify-self: end;
    margin-right: var(--space-24);
    padding-top: var(--space-50);
  }
}

.method__title {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: var(--font-normal);
  line-height: var(--leading-tight);
  letter-spacing: 0;
  color: var(--color-fg-strong);
  max-width: var(--method-title-width);
  margin: 0;
}

.method__title span {
  color: var(--color-fg-subtle);
}

.method__lead {
  font-family: var(--font-ui);
  font-size: var(--text-body);
  line-height: var(--leading-relaxed);
  color: var(--color-fg-subtle);
  max-width: 18rem;
  margin: 0;
}

.method__cta {
  display: none;
}

.method__title-link {
  color: inherit;
  text-decoration: none;
}

.method__arrow {
  display: inline-block;
  animation: method-nudge 1.4s ease-in-out infinite;
}

@keyframes method-nudge {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(6px); }
}

/* Mobile: destaque visual — fundo cinza full-bleed com radius no topo. */
@media (max-width: 767px) {
  .method {
    margin-inline: 0;
    border-radius: 0;
    background-size: 100% 18rem, 50% 100%;
    background-position: left top, left top;
  }

  .method__intro {
    align-items: center;
    text-align: center;
  }
}

/* --- Timeline --- */

.method__steps {
  --method-icon-size: 0.875rem;
  --method-icon-half: calc(var(--method-icon-size) / 2);
  --method-icon-offset: var(--space-3);
  --method-track-anchor: calc(var(--method-icon-offset) + var(--method-icon-half));
  --method-step-text-width: 29.5rem;

  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 1024px) {
  .method__steps {
    /* Espaçamento natural: nem altura forçada (que abre vazio), nem
       apertado demais. Dá ~2 passos legíveis por dobra. */
    gap: 0;
    /* Encosta no início da 2ª coluna (= meio da viewport) e recua meio
       ícone: assim o centro do círculo — e a linha que o atravessa —
       caem exatamente no eixo da página. */
    justify-self: start;
    margin-left: calc(-1 * var(--method-icon-half));
    padding-block: 0;
  }
}

/* Trilho de fundo: começa e termina no centro dos ícones das pontas.
   translateX(-50%) centra a linha no eixo — sem ele, o `left` alinharia
   a borda esquerda dela, deixando-a meio pixel fora. */
.method__steps::before {
  content: '';
  position: absolute;
  top: var(--track-start, var(--method-track-anchor));
  bottom: var(--track-end, var(--method-icon-half));
  left: var(--method-icon-half);
  width: 1px;
  background-color: var(--color-border);
  transform: translateX(-50%);
}

/* Preenchimento: scaleY é animável no compositor (height não é).
   Sem transition de propósito — o valor já é atualizado a cada quadro do
   scroll; uma transição faria a barra correr atrás do movimento. */
.method__progress {
  position: absolute;
  top: var(--track-start, var(--method-track-anchor));
  bottom: var(--track-end, var(--method-icon-half));
  left: var(--method-icon-half);
  z-index: 3;
  width: 1px;
  background-color: var(--color-secondary);
  transform-origin: top;
  transform: translateX(-50%) scaleY(var(--progress, 0));
}

/* Cabeça luminosa na ponta do trilho.
   É irmã (e não filha) do .method__progress de propósito: dentro dele o
   scaleY esmagaria o ponto, e contra-escalar exigiria dividir por --progress
   — que é zero no início. Aqui basta posicionar por porcentagem. */
.method__glow {
  position: absolute;
  top: var(--track-start, var(--method-track-anchor));
  bottom: var(--track-end, var(--method-icon-half));
  left: var(--method-icon-half);
  z-index: 4;
  width: 1px;
  pointer-events: none;
  transform: translateX(-50%);
}

.method__glow::after {
  content: '';
  position: absolute;
  top: calc(var(--progress, 0) * 100%);
  left: 50%;
  width: var(--method-glow-size);
  height: var(--method-glow-size);
  margin:
    calc(var(--method-glow-size) / -2)
    0
    0
    calc(var(--method-glow-size) / -2);
  border-radius: var(--radius-full);
  background-color: var(--color-secondary);
  box-shadow: 0 0 var(--space-3) var(--space-1) var(--color-secondary);
}

/* --- Step --- */

.method-step {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: var(--method-icon-size) 1fr;
  gap: var(--space-10);
  align-items: start;
  padding-block: var(--space-14);
}

.method-step:first-of-type {
  padding-top: var(--space-14);
}

.method-step::after,
.method-step:last-child::before {
  content: '';
  position: absolute;
  left: calc(-50vw + var(--method-icon-half));
  z-index: -1;
  width: 100vw;
  height: 1px;
  background-color: var(--color-divider);
  pointer-events: none;
}

.method-step:not(:first-of-type)::after {
  top: 0;
}

.method-step:last-child::before {
  bottom: 0;
}

/* Passos ainda não alcançados ficam apagados e acendem na chegada.
   Só vale com o JS ativo (a classe vem de lá): sem ele, nada de deixar
   o conteúdo permanentemente apagado. */
.method.is-scroll-linked .method-step__icon,
.method.is-scroll-linked .method-step__body {
  transform: translateY(0.5rem);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.method.is-scroll-linked .method-step__body {
  opacity: 0.35;
}

.method.is-scroll-linked .method-step__icon {
  opacity: 1;
  transform: translateY(0);
}

.method.is-scroll-linked .method-step.is-active .method-step__icon,
.method.is-scroll-linked .method-step.is-active .method-step__body {
  opacity: 1;
  transform: translateY(0);
}

.method-step__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--method-icon-size);
  height: var(--method-icon-size);
  margin-top: var(--method-icon-offset);
  border-radius: var(--radius-full);
  background-color: var(--color-timeline-dot);
  border: 0;
  color: var(--color-fg-subtle);
  transition:
    background-color var(--duration-normal) var(--ease-default),
    border-color var(--duration-normal) var(--ease-default),
    color var(--duration-normal) var(--ease-default),
    box-shadow var(--duration-normal) var(--ease-default);
}

.method-step.is-active .method-step__icon {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-secondary-fg);
  box-shadow: 0 0 24px -2px var(--color-secondary);
}

.method-step.is-active .method-step__text {
  color: var(--color-fg);
}

.method-step.is-active .method-step__title {
  color: var(--color-fg-strong);
}

.method-step__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-2);
}

.method-step__title {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: var(--font-medium);
  line-height: var(--leading-snug);
  color: var(--color-fg-subtle);
  margin: 0;
  transition: color var(--duration-normal) var(--ease-default);
}

.method-step__text {
  font-family: var(--font-ui);
  font-size: var(--text-p);
  line-height: var(--leading-relaxed);
  color: var(--color-fg-subtle);
  max-width: var(--method-step-text-width);
  margin: 0;
}

.method-step__icon > * {
  display: none !important;
}

@media (min-width: 1024px) {
  .method-step:first-of-type {
    padding-top: var(--space-50);
  }
}

@media (max-width: 1023px) {
  .method__inner {
    gap: var(--space-8);
    padding-block: var(--space-14);
  }

  .method__steps {
    --method-step-text-width: 100%;
  }

  .method-step {
    gap: var(--space-5);
    padding-block: var(--space-10);
  }

  .method-step::after,
  .method-step:last-child::before {
    display: none;
  }

  .method-step__text {
    max-width: 100%;
  }
}

.method-step__more {
  display: inline-block;
  margin-top: var(--space-3);
  font-family: var(--font-ui);
  font-size: var(--text-small);
  font-weight: var(--font-medium);
  color: var(--color-fg-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

.method-step__more:hover {
  color: var(--color-fg-strong);
}