/* Research Page Styles */

/* Page Header - Academic Style */
.page-title {
  font-size: 42px;
  color: var(--gray-900);
  text-align: center;
  margin-bottom: 20px;
  font-weight: 300;
  letter-spacing: -0.5px;
  position: relative;
}

.page-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 2px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-teal) 100%);
}

/* Research Overview Section */
.research-overview {
  padding: 60px 40px;
  background: var(--white);
}

.research-content {
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Research Areas - Academic Paper Style */
.research-areas {
  margin-bottom: 60px;
  counter-reset: research-counter;
}

.research-area {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gray-200);
  counter-increment: research-counter;
}

.research-area:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.area-title {
  font-size: 18px;
  color: var(--gray-900);
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.4;
  position: relative;
  padding-left: 40px;
}

.area-title::before {
  content: counter(research-counter) '.';
  position: absolute;
  left: 0;
  top: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-blue);
  min-width: 30px;
}

.area-list {
  margin: 0;
  padding-left: 40px;
  list-style: none;
}

.area-image {
  margin: 20px 0 20px 40px;
  text-align: left;
}

.area-image img {
  max-width: 400px;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--gray-200);
  cursor: pointer;
  transition: transform 0.3s ease;
}

.area-image img:hover {
  transform: scale(1.05);
}

/* Image Modal */
.image-modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(4px);
}

.image-modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 95vw;
  max-height: 95vh;
  width: fit-content;
  height: fit-content;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-modal-content img {
  max-width: calc(100vw - 60px);
  border-radius: 8px;
  object-fit: contain;
  display: block;
}

.close-modal {
  position: absolute;
  top: 20px;
  right: 30px;
  color: var(--white);
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  z-index: 1001;
}

.close-modal:hover {
  opacity: 0.7;
}

.area-list li {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 8px;
  position: relative;
  text-align: justify;
}

.area-list li::before {
  content: '• ';
  color: var(--gray-500);
  font-weight: 500;
  margin-right: 8px;
}

/* Collaboration Section */
.collaboration-section {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-teal) 100%);
  color: var(--white);
  border-radius: 12px;
  padding: 32px;
  margin-top: 40px;
  box-shadow: 0 8px 24px rgba(46, 134, 171, 0.2);
}

.collaboration-title {
  font-size: 24px;
  color: var(--white);
  margin-bottom: 20px;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.collaboration-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.collaboration-list li {
  font-size: 14px;
  color: var(--white);
  line-height: 1.6;
  padding: 16px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.collaboration-list strong {
  color: var(--white);
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Research Media Section - Masonry Layout */
.research-media {
  column-count: 2;
  column-gap: 40px;
  margin: 0 auto;
  margin-top: 60px;
  padding: 50px 0;
  background: var(--gray-50);
  border-radius: 20px;
  padding-left: 40px;
  padding-right: 40px;
  max-width: 900px;
}

.media-item {
  background: none;
  border-radius: 0;
  padding: 0 0 40px 0;
  box-shadow: none;
  border: none;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: 32px;
  transition: all 0.3s ease;
  position: relative;
  break-inside: avoid;
  display: inline-block;
  width: 100%;
}

.media-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.media-item:hover {
  transform: none;
  box-shadow: none;
  border-bottom-color: var(--primary-blue);
}

.media-title {
  font-size: 19px;
  color: var(--gray-900);
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.3;
  position: relative;
  padding-left: 12px;
}

.media-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary-blue);
  border-radius: 2px;
}

.media-description {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.media-description a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 500;
}

.media-description a:hover {
  text-decoration: underline;
}

.media-description em {
  color: var(--gray-600);
  font-style: italic;
}

/* Audio Media Item */
.media-item.audio-item {
  align-self: start;
  max-height: fit-content;
}

.media-item.audio-item .media-description {
  margin-bottom: 20px;
}

/* Audio Player */
.audio-player {
  width: 100%;
  height: 50px;
  border-radius: 8px;
  outline: none;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
}

.audio-player::-webkit-media-controls-panel {
  background-color: var(--gray-100);
  border-radius: 8px;
}

/* Video Player */
.research-video {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 16px;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
}

.research-video:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Media Section Title */
.media-section-title {
  font-size: 32px;
  color: var(--gray-900);
  text-align: center;
  margin: 80px 0 50px;
  font-weight: 300;
  letter-spacing: -0.5px;
  position: relative;
}

.media-section-title::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 1px;
  background: var(--gray-300);
}

.media-section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-teal) 100%);
  border-radius: 1px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .area-title {
    padding-left: 30px;
    font-size: 16px;
  }

  .area-list {
    padding-left: 15px;
    padding-right: 10px;
  }

  .area-image {
    margin-left: 10px;
    margin-right: 10px;
  }

  .area-image img {
    max-width: 100%;
  }
}

/* Masonry 반응형 조정 */
@media (max-width: 900px) {
  .research-media {
    column-count: 1;
    padding-left: 0;
    padding-right: 0;
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .research-overview {
    padding: 30px 0;
  }

  .research-content {
    gap: 30px;
  }

  .media-title {
    font-size: 18px;
  }

  .media-description {
    font-size: 13px;
  }

  .area-image img {
    max-width: none;
    width: 100%;
  }

  .image-modal-content img {
    max-width: calc(100vw - 10px);
  }
}

@media (max-width: 480px) {
  .page-title {
    font-size: 24px;
    margin-bottom: 50px;
  }

  .research-overview {
    padding-left: 10px;
    padding-right: 10px;
  }

  .research-content {
    gap: 20px;
  }

  .media-title {
    font-size: 16px;
  }

  .research-media {
    gap: 24px;
    margin-top: 0px;
    padding-left: 10px;
    padding-right: 10px;
  }

  .collaboration-list {
    grid-template-columns: 1fr;
  }

  /* Modal adjustments for mobile */
  .image-modal-content {
    max-width: 98vw;
    max-height: 98vh;
  }

  .close-modal {
    top: 10px;
    right: 15px;
    font-size: 35px;
  }
}