/* 포트폴리오 이미지 공간 스타일 */
.portfolio-image-placeholder {
  text-align: center; 
  margin: 20px 0;
}

.portfolio-image-container {
  width: 100%; 
  max-width: 600px; 
  height: 300px; 
  margin: 0 auto; 
  border: 2px dashed #ccc; 
  border-radius: 15px; 
  background: linear-gradient(135deg, 
    rgba(248, 249, 250, 0.8) 0%, 
    rgba(248, 249, 250, 0.9) 100%);
  display: flex; 
  align-items: center; 
  justify-content: center; 
  color: #666;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.portfolio-image-container:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
  border-color: #3498db;
}

.portfolio-image-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg, 
    transparent, 
    rgba(102, 126, 234, 0.1), 
    transparent
  );
  animation: shimmer 3s infinite;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.portfolio-image-container:hover::before {
  opacity: 1;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.portfolio-image-text {
  text-align: center;
  z-index: 1;
}

.portfolio-image-text p:first-child {
  font-size: 1.2em; 
  margin: 10px 0;
  font-weight: 600;
}

.portfolio-image-text p:last-child {
  font-size: 0.9em; 
  color: #999;
  margin: 5px 0;
  opacity: 0.8;
}

/* 다크모드 대응 */
@media (prefers-color-scheme: dark) {
  .portfolio-image-container {
    background: linear-gradient(135deg, 
      rgba(45, 45, 45, 0.8) 0%, 
      rgba(55, 55, 55, 0.9) 100%);
    border-color: #555 !important;
    color: #ccc !important;
  }
  
  .portfolio-image-container:hover {
    border-color: #64b5f6 !important;
  }
  
  .portfolio-image-text p:first-child {
    color: #e8e8e8 !important;
  }
  
  .portfolio-image-text p:last-child {
    color: #aaa !important;
  }
  
  .portfolio-image-container::before {
    background: linear-gradient(
      45deg, 
      transparent, 
      rgba(100, 181, 246, 0.15), 
      transparent
    );
  }
}