/* プレミアムオプションコース専用CSS */

.premium-course-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.premium-course-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(54, 144, 217, 0.03) 0%, transparent 70%);
  z-index: 0;
}

.premium-course-section .container {
  position: relative;
  z-index: 1;
}

.premium-course {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.premium-course::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #3B82F6 0%, #93C5FD 100%);
  z-index: 1;
}

.premium-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #3B82F6 0%, #93C5FD 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(8, 145, 105, 0.25);
  transition: all 0.3s ease;
}

.premium-icon:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(8, 145, 105, 0.35);
}

.premium-icon i {
  font-size: 28px;
  color: white;
}

.premium-course .sub-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--headings-color);
  margin: 0;
  background: linear-gradient(135deg, #3B82F6 0%, #93C5FD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.intro-text {
  font-size: 17px;
  line-height: 1.7;
  color: #2E2E2E;
  margin-bottom: 30px;
  font-weight: 400;
}

.premium-features {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(8, 145, 105, 0.1);
}

.features-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--headings-color);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
}

.features-title i {
  color: #3B82F6;
  font-size: 24px;
  margin-right: 10px;
}

.feature-card {
  background: rgba(8, 145, 105, 0.05);
  border-radius: 12px;
  padding: 25px 20px;
  height: 100%;
  transition: all 0.3s ease;
  border: 1px solid rgba(8, 145, 105, 0.1);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(8, 145, 105, 0.08);
  box-shadow: 0 10px 30px rgba(8, 145, 105, 0.15);
}

.feature-icon {
  width: 55px;
  height: 55px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 15px;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  background: rgba(8, 145, 105, 0.2);
  transform: scale(1.1);
}

.feature-icon i {
  font-size: 26px;
  color: #3B82F6;
}

.feature-card h6 {
  font-size: 16px;
  font-weight: 600;
  color: var(--headings-color);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.5;
  color: #666;
  margin: 0;
}

.course-highlight {
  background: rgba(236, 221, 59, 0.08);
  border-radius: 15px;
  padding: 25px;
  margin-top: 30px;
  border-left: 4px solid #93C5FD;
  display: flex;
  align-items: flex-start;
}

.course-highlight .highlight-icon {
  flex-shrink: 0;
  margin-right: 20px;
  width: 50px;
  height: 50px;
  background: rgba(236, 221, 59, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-highlight .highlight-icon i {
  font-size: 24px;
  color: #93C5FD;
}

.course-highlight p {
  color: #2E2E2E;
  line-height: 1.7;
  margin: 0;
  font-size: 16px;
}

.course-highlight strong {
  color: #3B82F6;
  font-weight: 600;
}

.double-deodorize-section {
  background: linear-gradient(135deg, rgba(8, 145, 105, 0.03) 0%, rgba(236, 221, 59, 0.03) 100%);
  border-radius: 15px;
  padding: 30px;
  margin-top: 20px;
  border: 1px solid rgba(8, 145, 105, 0.1);
}

.double-deodorize-section h5 {
  font-size: 22px;
  font-weight: 700;
  color: var(--headings-color);
  margin-bottom: 15px;
  text-align: center;
}

.double-deodorize-section .subtitle {
  font-size: 18px;
  color: #3B82F6;
  text-align: center;
  margin-bottom: 25px;
  font-weight: 500;
}

.deodorize-types {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin-top: 25px;
}

.deodorize-type {
  background: rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.deodorize-type:hover {
  border-color: rgba(8, 145, 105, 0.3);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(8, 145, 105, 0.1);
}

.deodorize-type h6 {
  font-size: 18px;
  font-weight: 600;
  color: #3B82F6;
  margin-bottom: 10px;
}

.deodorize-type p {
  font-size: 14px;
  line-height: 1.6;
  color: #666;
  margin: 0;
}

.recommended-section {
  background: rgba(54, 144, 217, 0.05);
  border-radius: 15px;
  padding: 25px;
  margin-top: 20px;
  border-left: 4px solid var(--theme-color1);
}

.recommended-section h6 {
  font-size: 18px;
  font-weight: 600;
  color: var(--theme-color1);
  margin-bottom: 15px;
}

.recommended-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.recommended-list li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.5;
  color: #666;
}

.recommended-list li::before {
  content: '•';
  color: var(--theme-color1);
  font-weight: bold;
  margin-right: 10px;
  flex-shrink: 0;
}

/* レスポンシブ対応 */
@media (max-width: 991.98px) {
  .premium-course {
    padding: 30px 25px;
  }
  
  .premium-course .sub-title {
    font-size: 24px;
  }
  
  .deodorize-types {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 767.98px) {
  .premium-course-section {
    padding: 60px 0;
  }
  
  .premium-course {
    padding: 25px 20px;
  }
  
  .premium-course .sub-title {
    font-size: 22px;
  }
  
  .intro-text {
    font-size: 16px;
  }
  
  .premium-features {
    padding: 25px 20px;
  }
  
  .course-highlight {
    flex-direction: column;
    text-align: center;
  }
  
  .course-highlight .highlight-icon {
    margin: 0 auto 15px;
  }
}

@media (max-width: 575.98px) {
  .premium-course {
    padding: 20px 15px;
  }
  
  .premium-icon {
    width: 50px;
    height: 50px;
  }
  
  .premium-icon i {
    font-size: 24px;
  }
  
  .premium-course .sub-title {
    font-size: 20px;
  }
  
  .feature-card {
    padding: 20px 15px;
  }
  
  .double-deodorize-section h5 {
    font-size: 20px;
  }
}