/* ==========================================================================
   Proyectos — composición editorial con filtros
   ========================================================================== */

.filters {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: var(--space-lg);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  padding: 0.5em 0.2em;
  color: var(--on-surface-soft);
  border-bottom: 1.5px solid transparent;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.filter-btn:hover {
  color: var(--on-surface);
}

.filter-btn[aria-pressed="true"] {
  color: var(--luz);
  border-color: var(--luz);
}

.filter-count {
  opacity: 0.6;
}

.projects-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.project-card {
  position: relative;
  background: var(--surface);
  padding: clamp(1.75rem, 2.5vw, 2.5rem);
  min-height: 15rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: clip;
  transition: background var(--dur-fast) var(--ease-out);
}

.project-card.is-hidden {
  display: none;
}

.project-card--featured {
  grid-column: span 2;
  min-height: 20rem;
}

.project-card__link {
  position: absolute;
  inset: 0;
  z-index: 3;
}

.project-card__num {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--on-surface-soft);
}

.project-card__mark {
  position: absolute;
  right: clamp(1rem, 2vw, 1.75rem);
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(4.5rem, 9vw, 9rem);
  color: var(--on-surface);
  opacity: 0.06;
  letter-spacing: -0.02em;
  pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
}

.project-card__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-med) var(--ease-out);
}

.project-card:hover .project-card__image,
.project-card:focus-within .project-card__image {
  transform: scale(1.04);
}

.project-card:has(.project-card__image)::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(to top, rgba(23, 19, 15, 0.78), rgba(23, 19, 15, 0.05) 60%);
}

.project-card:has(.project-card__image) .project-card__num,
.project-card:has(.project-card__image) .project-card__name {
  color: var(--cream);
  position: relative;
  z-index: 1;
}

.project-card:has(.project-card__image):hover .project-card__name,
.project-card:has(.project-card__image):focus-within .project-card__name {
  color: var(--luz-bright);
}

.project-card__foot {
  position: relative;
  z-index: 1;
}

.project-card__name {
  font-size: clamp(1.25rem, 1.8vw, 1.875rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
  transition: color var(--dur-fast) var(--ease-out);
}

.project-card__category {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.project-card__category::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cat-color, var(--luz));
}

.project-card[data-category="wordpress"] {
  --cat-color: var(--accent);
}

.project-card[data-category="prestashop"] {
  --cat-color: var(--rose);
}

.project-card[data-category="custom"] {
  --cat-color: var(--clay);
}

.project-card__category {
  color: var(--cat-color, var(--on-surface-soft));
}

.project-card:hover,
.project-card:focus-within {
  background: var(--surface-alt);
}

.project-card:hover .project-card__mark,
.project-card:focus-within .project-card__mark {
  opacity: 0.1;
  transform: translateY(-50%) translateX(-0.5rem);
}

.project-card:hover .project-card__name,
.project-card:focus-within .project-card__name {
  color: var(--luz);
}

@media (max-width: 980px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-card--featured {
    grid-column: span 1;
    min-height: 15rem;
  }
}