.portfolio-section {
  max-width: 1000px;
  margin: 3rem auto;
  padding: 2rem 1rem;
  background: linear-gradient(145deg, var(--bg) 0%, #ffffff 100%);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.portfolio-section::before {
  content: '🖼️';
  position: absolute;
  top: -20px;
  right: -20px;
  font-size: 6rem;
  opacity: 0.05;
  animation: floatIcon 8s ease-in-out infinite alternate;
}

@keyframes floatIcon {
  from { transform: translate(0, 0) rotate(0deg); }
  to { transform: translate(-15px, 15px) rotate(8deg); }
}

.portfolio-section h2 {
  text-align: center;
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.portfolio-filters input,
.portfolio-filters select {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--primary-light);
  border-radius: var(--radius);
  flex: 1 1 200px;
  max-width: 300px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.portfolio-filters input:focus,
.portfolio-filters select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 8px rgba(0,119,204,0.2);
  outline: none;
}

.portfolio-filters button {
  padding: 0.5rem 1.5rem;
  font-size: 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background 0.2s, transform 0.2s;
}

.portfolio-filters button::after {
  content: '';
  position: absolute;
  top: 0; left: -50%;
  width: 50%; height: 100%;
  background: rgba(255,255,255,0.3);
  transform: skewX(-25deg);
  transition: left 0.4s;
}

.portfolio-filters button:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

.portfolio-filters button:hover::after {
  left: 120%;
}

.portfolio-list {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  position: relative;
  z-index: 1;
}

.portfolio-item {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.portfolio-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.portfolio-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.portfolio-item:hover .portfolio-thumb {
  transform: scale(1.05);
}

.portfolio-details {
  padding: 1rem;
}

.portfolio-details h3 {
  margin: 0 0 .5rem;
  font-size: 1.3rem;
  color: var(--primary);
}

.portfolio-details .category {
  font-size: .9rem;
  color: var(--muted);
  margin-bottom: .75rem;
}

.portfolio-details p {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 1rem;
}

.portfolio-details a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

.portfolio-details a:hover {
  color: var(--primary);
}

@media (max-width: 768px) {
  .portfolio-section {
    margin: 2rem 1rem;
    padding: 1.5rem 1rem;
  }
  .portfolio-section h2 {
    font-size: 2rem;
  }
  .portfolio-filters {
    gap: 0.75rem;
  }
  .portfolio-details h3 {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .portfolio-section {
    margin: 1rem;
    padding: 1.5rem 1rem;
  }
  .portfolio-section h2 {
    font-size: 1.7rem;
  }
  .portfolio-details h3 {
    font-size: 1rem;
  }
}