/* ============================================================
   PORTFOLIO — Styles de la page portfolio.html
   ============================================================ */

/* ── Filtres ── */
.portfolio-filters {
  border-bottom: 1px solid var(--cream-deep);
  background: var(--cream);
}

.filters {
  display: flex;
  align-items: center;
  gap: var(--s2);
  flex-wrap: wrap;
  padding: var(--s2) 0;
}

.filter-btn {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--cream-deep);
  background: transparent;
  color: var(--grey-mid);
  transition: all var(--dur-fast) var(--ease);
}

.filter-btn:hover {
  border-color: var(--black);
  color: var(--black);
}

.filter-btn--active {
  background: var(--black);
  border-color: var(--black);
  color: var(--cream);
}

/* ── Grille ── */
.portfolio-grid-section {
  padding: var(--s5) 0 var(--s6);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s3);
}

.portfolio-card--wide {
  grid-column: span 2;
}

/* ── Card ── */
.portfolio-card {
  background: var(--white);
  border: 1px solid var(--cream-deep);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--dur-mid) var(--ease),
              transform var(--dur-mid) var(--ease),
              opacity var(--dur-mid) var(--ease);
}

.portfolio-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.portfolio-card.hidden {
  display: none;
}

/* ── Thumbnail placeholder ── */
.portfolio-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.portfolio-card--wide .portfolio-card__thumb {
  aspect-ratio: 21 / 9;
}

.portfolio-card__thumb-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: flex-end;
  padding: var(--s3);
}

/* Couleurs de placeholder pour chaque projet */
.portfolio-card__thumb--a { background: #2C2C2C; }
.portfolio-card__thumb--b { background: #4A3728; }
.portfolio-card__thumb--c { background: #3D4A2F; }
.portfolio-card__thumb--d { background: #2A2A3E; }
.portfolio-card__thumb--e { background: #4A2C2C; }
.portfolio-card__thumb--f { background: #2C3A2C; }

.portfolio-card__placeholder-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: rgba(247,242,235,0.15);
  line-height: 1.2;
  user-select: none;
  pointer-events: none;
}

/* ── Overlay hover ── */
.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(216, 90, 48, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur-mid) var(--ease);
}

.portfolio-card__overlay span {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
}

.portfolio-card:hover .portfolio-card__overlay {
  opacity: 1;
}

/* ── Infos ── */
.portfolio-card__info {
  padding: var(--s3);
}

.portfolio-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.portfolio-card__year {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--grey-mid);
  letter-spacing: 0.08em;
}

.portfolio-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--black);
}

.portfolio-card__desc {
  font-size: 0.875rem;
  color: var(--grey-mid);
  line-height: 1.6;
  margin-bottom: 10px;
}

.portfolio-card__stack {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-light);
}

/* ── Note de bas ── */
.portfolio-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--grey-light);
  font-style: italic;
  margin-top: var(--s4);
  padding-top: var(--s4);
  border-top: 1px solid var(--cream-deep);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-card--wide { grid-column: span 2; }
}

@media (max-width: 640px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-card--wide { grid-column: span 1; }
  .portfolio-card--wide .portfolio-card__thumb { aspect-ratio: 16 / 9; }
}