/* ============================================================
   portfolio.css — Portfolio Section
   ============================================================ */

#portfolio {
  background-color: var(--surface-container-low);
}

.portfolio-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 4rem;
  gap: 2rem;
}

.portfolio-header h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}

.portfolio-header p {
  color: var(--on-surface-variant);
  font-size: 16px;
  margin-top: 0.4rem;
}

.portfolio-all-link {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--secondary-container);
  border-bottom: 1px solid var(--secondary-container);
  padding-bottom: 2px;
  white-space: nowrap;
  transition: opacity 0.2s;
}

html.light .portfolio-all-link {
  color: var(--primary-container);
  border-color: var(--primary-container);
}

.portfolio-all-link:hover { opacity: 0.75; }

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

/* ── Portfolio Card ──────────────────────────────────────── */
.portfolio-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  cursor: pointer;
}

.portfolio-card-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.portfolio-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.portfolio-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
    color-mix(in srgb, var(--surface) 90%, transparent) 0%,
    transparent 55%);
  opacity: 0;
  transition: opacity 0.4s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
}

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

.portfolio-card-overlay h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 0.3rem;
  transform: translateY(10px);
  transition: transform 0.4s ease;
}

.portfolio-card:hover .portfolio-card-overlay h4 {
  transform: translateY(0);
}

.portfolio-card-overlay .portfolio-tag {
  font-size: 13px;
  font-weight: 600;
  color: var(--on-surface-variant);
  margin-bottom: 1rem;
  transform: translateY(10px);
  transition: transform 0.4s ease 0.05s;
}

.portfolio-card:hover .portfolio-card-overlay .portfolio-tag {
  transform: translateY(0);
}

.portfolio-card-overlay .portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--secondary-container);
  transform: translateY(10px);
  transition: transform 0.4s ease 0.1s;
}

html.light .portfolio-card-overlay .portfolio-link {
  color: var(--secondary-container);
}

.portfolio-card:hover .portfolio-card-overlay .portfolio-link {
  transform: translateY(0);
}