/* ===============================
   Research Layout (updated style)
   =============================== */

/* 전체 배경 → 흰색 */
.research-content {
  padding: 40px 0 60px;
  background-color: #ffffff;
}

.research-list {
  display: flex;
  flex-direction: column;
  gap: 48px;  /* 대주제 간 여백 넉넉하게 */
}

/* ===== Research Section (대주제) ===== */

/* 박스 제거 → Publications 스타일 */
.research-section {
  padding: 0;
  border: none;
  background: none;
}

/* 대주제 제목 스타일 */
.research-section-header {
  margin-bottom: 18px;
}

.research-section-title {
  font-size: 1.45rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: #111827;
  padding-bottom: 6px;
  position: relative;
}

/* 노란 구분선: 대주제마다 */
.research-section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 80px;
  height: 3px;
  background-color: #facc15; /* yellow-400 */
  border-radius: 999px;
}

/* 대주제 설명 */
.research-section-description {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4b5563;
  margin-top: 8px;
  margin-bottom: 20px;
  max-width: 95%;
}

/* ===== Topic List ===== */
.research-topics {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== Topic Card (소주제) ===== */

/* Publications의 논문 카드와 톤 맞춘 스타일 */
.research-topic {
  display: flex;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 12px;
  background-color: #ffffff;
  border: 1px solid #e5e7eb;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

/* 대주제에 소주제가 없을 때 단일 카드 */
.research-topic-single {
  margin-top: 0;
}

/* ==== 이미지 영역 ==== */

.research-topic-media {
  flex: 0 0 250px;
  max-width: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.research-topic-image {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
}

.research-topic-video {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
}

.research-topic-media-placeholder {
  width: 100%;
  height: 120px;
  border-radius: 10px;
  border: 1px dashed #d1d5db;
  background: #f9fafb;
  font-size: 0.8rem;
  color: #9ca3af;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==== 텍스트 영역 ==== */

.research-topic-content {
  flex: 1;
}

.research-topic-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 6px;
}

.research-topic-description {
  font-size: 0.93rem;
  line-height: 1.6;
  color: #4b5563;
}

.media-reference-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #1d4ed8;           /* 파란 글자 */
  background-color: #eff6ff; /* 연한 파란 배경 */
  border: 1px solid #bfdbfe;
  text-decoration: none;
  cursor: pointer;
}

.media-reference-pill:hover {
  background-color: #dbeafe;
  border-color: #93c5fd;
}

/* ===== Responsive ===== */

@media (max-width: 768px) {
  .research-topic {
    flex-direction: column;
  }

  .research-topic-media {
    max-width: 100%;
  }
}