/* ============================================================
   SECTION — PORTFÓLIO
   Cards retilíneos, cantos retos, imagem full-bleed.
   Alinhado ao design system: --radius-0, --shadow-card, --line-2.
   ============================================================ */

/* Container da seção */
.portfolio-section {
  background: var(--surface-0);
  padding-top: 80px;
  border-top: 1px solid var(--line-1);
}

/* Título da seção */
.portfolio-section__header {
  text-align: center;
  padding: 80px 0 48px;
}

.portfolio__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: var(--fw-bold);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-tighter);
  margin-bottom: var(--space-4);
}

.portfolio__subtitle {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-loose);
  color: var(--silver-500);
  max-width: 540px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .portfolio__subtitle {
    font-size: var(--fs-lg);
  }
}

/* O wrapper stack — rolagem com stacking */
.portfolio-stack {
  display: flex;
  flex-direction: column;
  gap: 80px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 120px;
}

/* ---------------------------------------------------------------
   CARD — cantos retos, sombra pesada, arquitetônico
   --------------------------------------------------------------- */
.portfolio-card {
  position: sticky;
  top: 72px;
  z-index: auto;
  background: var(--surface-3);
  border: 1px solid var(--line-2);
  border-radius: 0;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  align-items: stretch;
  transform-origin: top center;
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s ease;
  height: auto;
  width: 100%;
  will-change: transform;
}

/* Cascata sticky */
.portfolio-card[data-index="0"] { z-index: 1; top: 72px; }
.portfolio-card[data-index="1"] { z-index: 2; top: calc(72px + 20px); }
.portfolio-card[data-index="2"] { z-index: 3; top: calc(72px + 40px); }

/* Inner: split grid — texto com padding, imagem sangrando */
.portfolio-card__inner {
  display: grid;
  grid-template-columns: 38% 62%;
  gap: 0;
  width: 100%;
  padding: 0;
  align-items: stretch;
  min-height: 520px;
}

/* ---------------------------------------------------------------
   INFO (lado esquerdo) — flex column, space-between
   --------------------------------------------------------------- */
.portfolio-card__info {
  padding: 48px 40px 48px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

/* Número decorativo — grande, platina, quase invisível */
.portfolio-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(72px, 8vw, 120px);
  font-weight: var(--fw-bold);
  background-image: var(--grad-platinum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  opacity: 0.25;
  line-height: 1;
  margin-bottom: 8px;
}

/* Tags */
.portfolio-card__tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

/* Título do projeto */
.portfolio-card__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.8vw, 38px);
  font-weight: var(--fw-bold);
  color: var(--text-1);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-tight);
  text-transform: uppercase;
  margin-bottom: 0;
}

/* Descrição — empurrada pra baixo */
.portfolio-card__description {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--silver-500);
  line-height: var(--lh-loose);
  font-weight: var(--fw-light);
  max-width: 340px;
  margin-top: auto;
  padding-top: var(--space-8);
}

/* CTA — link minimalista, borda inferior fina */
.portfolio-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--silver-500);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid var(--line-2);
  padding-bottom: var(--space-1);
  margin-top: var(--space-6);
  width: max-content;
  transition: color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}

.portfolio-card__cta:hover {
  color: var(--text-1);
  border-color: var(--silver-500);
}
.portfolio-card__cta:focus-visible {
  outline: 2px solid var(--silver-300);
  outline-offset: 4px;
}

/* ---------------------------------------------------------------
   IMAGEM (lado direito) — full-bleed, sem radius, sem moldura
   --------------------------------------------------------------- */
.portfolio-card__image-wrapper {
  overflow: hidden;
  border-radius: 0;
  position: relative;
  background: var(--surface-2);
  width: 100%;
  height: 100%;
  align-self: stretch;
}

.portfolio-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.7) brightness(0.9);
  transition: transform 0.5s var(--ease-out), filter 0.5s var(--ease-out);
}

.portfolio-card:hover .portfolio-card__image {
  transform: scale(1.03);
  filter: saturate(1) brightness(1);
}

/* ---------------------------------------------------------------
   OVERLAY de stacking (escurece quando coberto)
   --------------------------------------------------------------- */
.portfolio-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0);
  transition: background-color 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  z-index: 10;
}

.portfolio-card.is-stacked {
  transform: scale(0.94);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.portfolio-card.is-stacked::after {
  background-color: rgba(0, 0, 0, 0.55);
}

/* ============================================================
   MOBILE RESPONSIVENESS
   ============================================================ */
@media (max-width: 767px) {
  .portfolio-stack {
    gap: 48px;
    padding: 40px 16px 80px;
  }

  .portfolio-card {
    height: auto;
    border-radius: 0;
  }

  .portfolio-card__inner {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0;
    min-height: auto;
  }

  .portfolio-card__info {
    padding: 28px 24px 40px;
    min-height: auto;
    justify-content: flex-start;
  }

  /* Imagem vem primeiro no mobile */
  .portfolio-card__image-wrapper {
    order: -1;
    height: auto;
    aspect-ratio: 4 / 3;
    width: 100%;
  }

  .portfolio-card__number {
    font-size: 48px;
    margin-bottom: var(--space-3);
  }

  .portfolio-card__title {
    font-size: 22px;
  }

  .portfolio-card__description {
    margin-top: var(--space-4);
    padding-top: 0;
  }

  /* No mobile: sem scale mas mantém overlay de escurecimento */
  .portfolio-card.is-stacked {
    transform: none;
  }
}