/* ============================================================
   Projects — Grid, cards, tags
   ============================================================ */

.projects-group {
  margin-bottom: 4rem;
}

.projects-group:last-child {
  margin-bottom: 0;
}

.projects-group-heading {
  font-family: var(--md-sys-typescale-display-font);
  font-weight: var(--md-sys-typescale-headline-weight);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  color: var(--md-sys-color-secondary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ── Project Card ──────────────────────────────────────────── */

.card {
  background: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-lg);
  box-shadow: var(--md-elevation-1);
  overflow: hidden;
  transition: transform var(--md-motion-duration-medium) var(--md-motion-easing-standard),
              box-shadow var(--md-motion-duration-medium) var(--md-motion-easing-standard);
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(134, 210, 230, 0.06);
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--md-elevation-3);
}

/* Image slot — hidden when empty, shown when populated */
.card-image {
  display: none;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--md-sys-color-surface-variant);
}

.card-image.has-image {
  display: block;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--md-motion-duration-medium) var(--md-motion-easing-standard);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

/* Color accent strip at top when no image */
.card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--md-sys-color-primary), var(--md-sys-color-secondary));
  border-radius: var(--md-sys-shape-lg) var(--md-sys-shape-lg) 0 0;
}

.card-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.card-title {
  font-family: var(--md-sys-typescale-display-font);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--md-sys-color-on-surface);
}

.card-link {
  color: var(--md-sys-color-primary);
  transition: color var(--md-motion-duration-short) var(--md-motion-easing-standard);
  flex-shrink: 0;
}

.card-link:hover {
  color: var(--md-sys-color-on-primary-container);
}

.card-link svg {
  width: 18px;
  height: 18px;
}

.card-meta {
  font-size: var(--md-sys-typescale-label-size);
  font-weight: var(--md-sys-typescale-label-weight);
  color: var(--md-sys-color-outline);
  margin-bottom: 1rem;
}

.card-summary {
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 1.25rem;
  font-size: 0.925rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.card-tag {
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: var(--md-sys-typescale-label-weight);
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
  border-radius: var(--md-sys-shape-full);
  letter-spacing: 0.02em;
}