.portfolio-section {
  background: radial-gradient(circle at top right, #1a1d2a 0, #080912 55%, #03030a 100%);
}

.portfolio-section .section-header {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.portfolio-section .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

.portfolio-filters-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}

.portfolio-filters {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 6px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(5, 5, 12, 0.9);
}

.portfolio-filter-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.75rem 2.1rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.25s ease, color 0.2s ease, border-color 0.2s ease,
    box-shadow 0.25s ease, transform 0.2s ease;
}

.portfolio-filter-btn.active {
  color: #fff;
  background: radial-gradient(
    circle at top left,
    oklch(62% 0.16 264.665) 0,
    oklch(45% 0.15 264.665) 52%,
    #141627 100%
  );
  border-color: var(--color-accent-strong);
  box-shadow: 0 20px 40px color-mix(in srgb, var(--color-accent) 45%, transparent);
}

.portfolio-filter-btn:hover {
  color: #fff;
  background: color-mix(in oklch, var(--color-accent) 12%, transparent);
  border-color: color-mix(in oklch, var(--color-accent) 25%, transparent);
}

.portfolio-filter-btn.active:hover {
  background: radial-gradient(
    circle at top left,
    oklch(64% 0.16 264.665) 0,
    oklch(48% 0.15 264.665) 52%,
    #1a1c2a 100%
  );
  border-color: var(--color-accent-strong);
  box-shadow: 0 22px 44px color-mix(in srgb, var(--color-accent) 50%, transparent);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.portfolio-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(150deg, #161824 0, #090a14 50%, #05050c 100%);
  border: 1px solid var(--color-border-subtle);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.8);
  transform: perspective(900px) rotateX(0deg) translateY(0);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal),
    border-color var(--transition-fast), background var(--transition-fast);
}

.portfolio-image-wrap {
  position: relative;
  height: 200px;
  min-height: 200px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.portfolio-image-scroll {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.portfolio-image-scroll::-webkit-scrollbar {
  width: 6px;
}

.portfolio-image-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.portfolio-image-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 3px;
}

.portfolio-image-scroll img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 100%;
  transition: transform var(--transition-normal);
}

.portfolio-item:hover .portfolio-image-scroll img {
  transform: scale(1.02);
}

.portfolio-item:hover {
  transform: perspective(900px) rotateX(4deg) translateY(-8px);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.95);
  border-color: var(--color-accent-strong);
}

.portfolio-content {
  padding: 20px 22px 22px;
}

.portfolio-meta {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.portfolio-title {
  font-size: 1.12rem;
  margin: 0 0 8px;
}

.portfolio-description {
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--color-text-muted);
}

.portfolio-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.portfolio-link {
  font-size: 0.9rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(255, 255, 255, 0.02);
  transition: background var(--transition-fast), border-color var(--transition-fast),
    color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.portfolio-link i {
  font-size: 0.85em;
}

.portfolio-link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: #fff;
}

.portfolio-link.hidden {
  display: none;
}

@media (max-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .portfolio-filters-wrap {
    margin-bottom: 22px;
  }

  .portfolio-filters {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 10px;
    width: 100%;
    max-width: 100%;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  .portfolio-filter-btn {
    padding: 0.75rem 0.5rem;
    font-size: 0.9rem;
    text-align: center;
    border-radius: 12px;
    min-width: 0;
    border: 1px solid transparent;
    box-shadow: none;
  }

  .portfolio-filter-btn:not(.active) {
    border-color: transparent;
    box-shadow: none;
  }

  .portfolio-filter-btn.active {
    /* Keep original gradient and accent on first load */
    color: #fff;
    background: radial-gradient(
      circle at top left,
      oklch(62% 0.16 264.665) 0,
      oklch(45% 0.15 264.665) 52%,
      #141627 100%
    );
    border-color: var(--color-accent-strong);
    box-shadow: 0 20px 40px color-mix(in srgb, var(--color-accent) 45%, transparent);
  }
}

@media (max-width: 720px) {
  .portfolio-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .portfolio-filters {
    padding: 8px;
    gap: 6px;
  }

  .portfolio-filter-btn {
    padding: 0.65rem 0.4rem;
    font-size: 0.82rem;
  }
}