/* ============================================================
   portfolio.css — Sección de proyectos / portfolio
   ============================================================ */

.portfolio {
  background: var(--bg-base);
}

/* Grid de 3 columnas */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* ── Project Card ── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    transform     var(--transition-smooth),
    box-shadow    var(--transition-smooth),
    border-color  var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--glow-cyan), var(--shadow-card);
  border-color: var(--border-hover);
}

/* ── Thumbnail (gradiente como placeholder) ── */
.project-card__thumb {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.project-card__thumb--1 {
  background: linear-gradient(
    135deg,
    #0D1B2A 0%,
    #1B3A5C 30%,
    #1E6B8A 60%,
    #4DC8E8 100%
  );
}

.project-card__thumb--2 {
  background: linear-gradient(
    135deg,
    #1A0A2E 0%,
    #3B1E6E 30%,
    #7B3FA0 60%,
    #E8326E 100%
  );
}

.project-card__thumb--3 {
  background: linear-gradient(
    135deg,
    #0A1F0A 0%,
    #0F3A2A 30%,
    #1A6B4A 60%,
    #4DC8A0 100%
  );
}

/* Patrón decorativo sobre el gradiente */
.project-card__thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Overlay en hover */
.project-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-smooth);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

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

/* ── Body de la card ── */
.project-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.project-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.project-card__desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

/* Badge "Proyecto académico / personal" */
.project-card__badge {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(232, 50, 110, 0.10);
  border: 1px solid rgba(232, 50, 110, 0.25);
  color: var(--magenta-light);
  margin-bottom: var(--space-1);
}

/* Tags */
.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-2);
}

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

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