/* Projects / Portfolio Page */

.projects-hero {
  padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-16);
  background: var(--navy);
  text-align: center;
}

.projects-hero__title {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.projects-hero__subtitle {
  color: var(--gray-300);
  font-size: var(--fs-md);
  max-width: 600px;
  margin: 0 auto;
}

/* Filter bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}

.filter-btn {
  padding: var(--space-2) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--gray-500);
  background: transparent;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.filter-btn--active {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

/* Project grid */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 576px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .project-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Project card */
.project-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.3s;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover img {
  transform: scale(1.08);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(27, 42, 74, 0.9) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-6);
  transition: background var(--transition-base);
}

.project-card:hover .project-card__overlay {
  background: linear-gradient(to top, rgba(27, 42, 74, 0.95) 0%, rgba(27, 42, 74, 0.3) 100%);
}

.project-card__label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-2);
}

.project-card__title {
  font-size: var(--fs-xl);
  color: var(--white);
  margin-bottom: var(--space-2);
}

.project-card__desc {
  font-size: var(--fs-sm);
  color: var(--gray-300);
  line-height: var(--lh-relaxed);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.project-card:hover .project-card__desc {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Cards are links now, so they need link resets and an affordance ---- */
a.project-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

a.project-card:hover {
  transform: translateY(-4px);
}

a.project-card:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: var(--space-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.04em;
  color: var(--gold);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base), gap 0.2s ease;
}

.project-card:hover .project-card__link {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover .project-card__link { gap: 0.75rem; }

/* On touch devices there is no hover, so reveal the detail permanently */
@media (hover: none) {
  .project-card__desc,
  .project-card__link {
    opacity: 1;
    transform: none;
  }
}