/* instructors.css - 강사 프로필 디자인 */

/* 그리드 레이아웃 */
.instructor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

/* 강사 카드 */
.instructor-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: var(--radius-md);
  border: 1px solid #e2e8f0;
  text-align: center;
  padding: 2.5rem 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.instructor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #3b6cb7);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.instructor-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
}

.instructor-card:hover::before {
  transform: scaleX(1);
}

.instructor-card .img-container {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 1.5rem;
  border: 4px solid #f1f5f9;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.instructor-card:hover .img-container {
  border-color: var(--primary);
  box-shadow: 0 8px 25px rgba(26, 54, 93, 0.2);
}

.instructor-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.instructor-card:hover img {
  transform: scale(1.05);
}

.instructor-card .name {
  font-size: 1.3rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.instructor-card .title {
  font-size: 1rem;
  color: #64748b;
  margin-bottom: 1.5rem;
  font-weight: 500;
  line-height: 1.5;
}

.instructor-card .details-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(26, 54, 93, 0.25);
}

.instructor-card .details-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(26, 54, 93, 0.35);
}

/* 상세 정보 뷰 */
.instructor-detail-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0;
}

.back-to-list {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  margin-bottom: 2rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
}

.back-to-list:hover {
  background: #e8edf5;
  border-color: var(--primary);
}

.back-to-list i {
  font-size: 1rem;
  transition: transform 0.2s ease;
}

.back-to-list:hover i {
  transform: translateX(-3px);
}

.detail-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2.5rem;
  align-items: start;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid #e2e8f0;
}

.detail-img-container {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.detail-img-container img {
  width: 100%;
  height: auto;
  display: block;
}

.detail-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.detail-info .name {
  font-size: 2.2rem;
  font-weight: 800;
  color: #1e293b;
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.detail-info .title {
  font-size: 1.2rem;
  color: #64748b;
  margin: 0;
  font-weight: 600;
  padding-bottom: 1rem;
  border-bottom: 2px solid #e2e8f0;
}

.detail-info .details-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.detail-info .details-list li {
  position: relative;
  padding: 0.9rem 1.25rem 0.9rem 2.75rem;
  line-height: 1.7;
  color: #475569;
  background: #f8fafc;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--primary);
  font-size: 0.95rem;
}

.detail-info .details-list li::before {
  content: '';
  position: absolute;
  left: 1rem;
  top: 1.15rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

/* 반응형 */
@media screen and (max-width: 1024px) {
  .instructor-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
  }

  .detail-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .detail-img-container {
    max-width: 280px;
    margin: 0 auto;
  }
}

@media screen and (max-width: 768px) {
  .instructor-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
  }

  .instructor-card {
    padding: 1.5rem;
  }

  .instructor-card .img-container {
    width: 120px;
    height: 120px;
    margin-bottom: 1.2rem;
  }

  .instructor-card .name {
    font-size: 1.2rem;
  }

  .instructor-card .title {
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
  }

  .instructor-card .details-btn {
    padding: 0.65rem 1.4rem;
    font-size: 0.875rem;
  }

  .instructor-detail-container {
    padding: 1.5rem 0;
  }

  .detail-content {
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .detail-info .name {
    font-size: 1.7rem;
  }

  .detail-info .title {
    font-size: 1rem;
    padding-bottom: 0.75rem;
  }

  .detail-info .details-list li {
    font-size: 0.875rem;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
  }

  .back-to-list {
    margin-bottom: 1.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
  }
}

@media screen and (max-width: 480px) {
  .instructor-grid {
    gap: 1.2rem;
    margin-top: 1.2rem;
  }

  .instructor-card {
    padding: 1.25rem;
  }

  .instructor-card .img-container {
    width: 100px;
    height: 100px;
    margin-bottom: 1rem;
  }

  .instructor-card .name {
    font-size: 1.1rem;
  }

  .instructor-card .title {
    font-size: 0.875rem;
    margin-bottom: 1rem;
  }

  .instructor-card .details-btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
  }

  .detail-content {
    padding: 1.25rem;
    gap: 1.25rem;
  }

  .detail-info .name {
    font-size: 1.5rem;
  }

  .detail-info .title {
    font-size: 0.95rem;
  }

  .detail-info .details-list li {
    font-size: 0.82rem;
    padding: 0.65rem 0.9rem 0.65rem 2.25rem;
  }

  .back-to-list {
    margin-bottom: 1.25rem;
    font-size: 0.82rem;
  }
}

/* section-title 상단 여백 보정 */
.section-title h2 {
  margin-top: 1.2rem;
}

@media (max-width: 768px) {
  .section-title h2 {
    margin-top: 0.8rem;
  }
}