/* =========================================================
   Portfolio Page — thedigitalladders.com/portfolio.html
   Page-specific hero & section styles only
   ========================================================= */

/* ---------- Portfolio Hero ---------- */
.portfolio-hero {
  position: relative;
  padding: clamp(4rem, 10vw, 6.5rem) 0 clamp(3.5rem, 7vw, 5rem);
  background: var(--grad-hero);
  overflow: hidden;
  text-align: center;
}

.portfolio-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-mesh);
  animation: portfolioMesh 16s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes portfolioMesh {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.06) translate(-1%, 1%); }
}

.portfolio-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 42rem;
  margin-inline: auto;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.portfolio-hero.is-ready .portfolio-hero__inner {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-hero__title {
  margin-bottom: 1.15rem;
}

.portfolio-hero__sub {
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 0;
}

/* ---------- Filter Tabs ---------- */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.filter-btn {
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-muted);
  background: var(--white);
  border: 1.5px solid var(--border);
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.filter-btn:hover {
  border-color: rgba(10, 42, 94, 0.2);
  color: var(--navy);
}

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

/* ---------- Portfolio Grid ---------- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.portfolio-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), opacity 0.35s var(--ease);
}

.portfolio-item.is-hidden {
  display: none;
}

.portfolio-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.portfolio-item__media {
  aspect-ratio: 16 / 11;
  overflow: hidden;
  position: relative;
}

.portfolio-item__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.75s var(--ease);
}

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

.portfolio-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(6, 26, 60, 0.45) 100%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.portfolio-item:hover .portfolio-item__overlay {
  opacity: 1;
}

.portfolio-item__body {
  padding: 1.35rem 1.4rem 1.55rem;
}

.portfolio-item__body .tag {
  margin-bottom: 0.7rem;
}

.portfolio-item__body h3 {
  font-size: 1.2rem;
  margin-bottom: 0.45rem;
}

.portfolio-item__body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- Industries Strip ---------- */
.industries-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.industries-strip .tag {
  padding: 0.65rem 1.15rem;
  font-size: 0.88rem;
}

/* ---------- Portfolio CTA ---------- */
.portfolio-cta {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  padding: clamp(2.5rem, 6vw, 4rem);
  background: var(--grad-blue);
  color: var(--white);
  text-align: center;
}

.portfolio-cta h2 {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.portfolio-cta p {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 1.75rem;
  max-width: 32rem;
  margin-inline: auto;
}

.portfolio-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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