/* Base Section Styles */
.first-principles-section {
  padding: 6rem 0;
  background: #f9fbfe;
  position: relative;
  overflow: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Section Header Styles */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-subtitle {
  display: inline-block;
  font-size: 1.1rem;
  color: #3db090;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: rgba(61, 176, 144, 0.1);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: #1c4487;
}

.section-title span {
  display: block;
  line-height: 1.3;
}

.gradient-highlight {
  background: linear-gradient(135deg, #1c4487 0%, #2a6f8e 25%, #2c8c94 50%, #369b94 75%, #3db090 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
  padding: 0.2rem 0;
}

.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 2rem 0;
}

.divider-line {
  height: 2px;
  width: 100px;
  background: linear-gradient(to right, transparent, #2a6f8e, transparent);
}

.divider-icon {
  margin: 0 1.5rem;
  color: #369b94;
  font-size: 1.8rem;
}

.section-description {
  max-width: 700px;
  margin: 0 auto;
  color: #5a6d80;
  font-size: 1.2rem;
  line-height: 1.8;
}

/* Grid Layout */
.principles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 4rem 0;
}

/* Approach Column Styles */
.approach-column {
  display: flex;
  flex-direction: column;
}

.approach-card {
  background: white;
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(28, 68, 135, 0.05);
  position: relative;
  overflow: hidden;
  height: 100%;
}

.approach-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(to bottom, #1c4487, #3db090);
}

.card-header {
  display: flex;
  align-items: center;
  margin-bottom: 2rem;
}

.card-header i {
  font-size: 2rem;
  color: #2a6f8e;
  margin-right: 1.5rem;
}

.card-header h3 {
  font-size: 1.6rem;
  color: #1c4487;
  margin: 0;
}

.principle-item {
  display: flex;
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  background: rgba(60, 176, 144, 0.03);
}

.principle-item:hover {
  background: rgba(60, 176, 144, 0.1);
  transform: translateX(5px);
}

.principle-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #1c4487 0%, #2a6f8e 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  margin-right: 1.5rem;
  flex-shrink: 0;
}

.principle-content h4 {
  font-size: 1.2rem;
  color: #1c4487;
  margin-bottom: 0.5rem;
}

.principle-content p {
  color: #5a6d80;
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

/* Case Study Column Styles */
.casestudy-column {
  display: flex;
  flex-direction: column;
}

.casestudy-card {
  background: white;
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(28, 68, 135, 0.05);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.casestudy-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(to right, #1c4487, #3db090);
}

.case-header {
  margin-bottom: 2rem;
}

.case-badge {
  display: inline-block;
  background: linear-gradient(135deg, #1c4487 0%, #2a6f8e 100%);
  color: white;
  padding: 0.3rem 1.2rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.case-header h3 {
  font-size: 1.5rem;
  color: #1c4487;
  margin: 0;
}

.case-timeline {
  position: relative;
  padding-left: 30px;
  margin: 2rem 0;
}

.case-timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 0;
  height: 100%;
  width: 2px;
  background: linear-gradient(to bottom, #1c4487, #3db090);
}

.timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
}

.timeline-marker {
  position: absolute;
  left: -30px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2a6f8e;
  border: 3px solid white;
  box-shadow: 0 0 0 3px rgba(42, 111, 142, 0.3);
}

.timeline-content h4 {
  font-size: 1.1rem;
  color: #1c4487;
  margin-bottom: 0.3rem;
}

.timeline-content p {
  color: #5a6d80;
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

.case-stats {
  display: flex;
  justify-content: space-around;
  margin-top: 2rem;
  background: rgba(60, 176, 144, 0.05);
  border-radius: 12px;
  padding: 1.5rem;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: #1c4487;
  line-height: 1;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #1c4487 0%, #3db090 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 1rem;
  color: #5a6d80;
  font-weight: 500;
}

/* Methodology Section */
.methodology-section {
  margin: 4rem 0;
  text-align: center;
}

.methodology-title {
  font-size: 1.8rem;
  color: #1c4487;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.methodology-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(to right, #1c4487, #3db090);
}

.methodology-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.step-card {
  background: white;
  border-radius: 12px;
  padding: 2rem 1.5rem;
  box-shadow: 0 5px 20px rgba(28, 68, 135, 0.05);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.step-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(28, 68, 135, 0.1);
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(to right, #1c4487, #3db090);
}

.step-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #1c4487 0%, #2a6f8e 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.step-card h4 {
  font-size: 1.2rem;
  color: #1c4487;
  margin-bottom: 1rem;
}

.step-card p {
  color: #5a6d80;
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

/* CTA Section */
.principles-cta {
  background: linear-gradient(135deg, #1c4487 0%, #2a6f8e 100%);
  border-radius: 16px;
  padding: 4rem;
  text-align: center;
  color: white;
  margin-top: 4rem;
  position: relative;
  overflow: hidden;
}

.principles-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

.principles-cta h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.principles-cta p {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  font-size: 1.2rem;
  opacity: 0.9;
  position: relative;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  position: relative;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.cta-btn i {
  margin-left: 0.5rem;
  transition: transform 0.3s ease;
}

.cta-btn:hover i {
  transform: translateX(5px);
}

.primary-btn {
  background: white;
  color: #1c4487;
}

.primary-btn:hover {
  background: #f1f5f9;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.secondary-btn {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.3);
}

.secondary-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-3px);
}

/* Animations */
@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Responsive Styles */
@media (max-width: 992px) {
  .principles-grid {
    grid-template-columns: 1fr;
  }
  
  .methodology-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  
  .methodology-steps {
    grid-template-columns: 1fr;
  }
  
  .principles-cta {
    padding: 3rem 1.5rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: 1rem;
  }
  
  .cta-btn {
    width: 100%;
  }
}

@media (max-width: 576px) {
  .section-title {
    font-size: 1.8rem;
  }
  
  .section-subtitle {
    font-size: 0.9rem;
  }
  
  .approach-card,
  .casestudy-card {
    padding: 1.5rem;
  }
  
  .principle-item {
    flex-direction: column;
  }
  
  .principle-icon {
    margin-bottom: 1rem;
  }
}