/* MatInfrastructure styles migrated from React component */
.infra-section {
  max-width: 1000px;
  margin: 40px auto;
  padding: 48px 24px 48px;
  background: linear-gradient(135deg, #e3f1fb 72%, #fefefe 100%);
  border-radius: 28px;
  box-shadow: 0 12px 40px rgba(44, 96, 162, 0.12);
  text-align: center;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #1a2c55;
}

.infra-title {
  font-size: 2.6rem;
  font-weight: 900;
  margin-bottom: 32px;
  letter-spacing: 0.05em;
  color: #1a3059;
  text-transform: uppercase;
  user-select: none;
}

.infra-quote {
  font-style: italic;
  font-weight: 600;
  color: #2d4e8c;
  font-size: 1.3rem;
  margin-bottom: 44px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.infra-intro {
  font-size: 1.1rem;
  margin-bottom: 44px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
  color: #344865;
}

.infra-flip-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 36px 28px;
  perspective: 1200px;
}

.infra-flip-card {
  width: 280px;
  height: 320px;
  border-radius: 20px;
  box-shadow: 0 4px 22px rgba(58, 96, 186, 0.1);
  cursor: pointer;
  position: relative;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
  transform-style: preserve-3d;
  background: white;
}

.infra-flip-card:focus,
.infra-flip-card:hover,
.infra-flip-card.is-flipped {
  transform: rotateY(180deg);
  box-shadow: 0 14px 36px rgba(58, 96, 186, 0.22);
  outline: none;
}

.infra-flip-front,
.infra-flip-back {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 20px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 24px;
  box-sizing: border-box;
}

.infra-flip-front {
  background: linear-gradient(135deg, #2f62c9 0%, #183a8b 100%);
  color: white;
  user-select: none;
}

.infra-icon {
  font-size: 3.2rem;
  margin-bottom: 20px;
  filter:
    drop-shadow(0 0 6px #88b8ff)
    drop-shadow(0 0 10px #3367cc);
  transition: transform 0.3s ease;
}

.infra-flip-card:hover .infra-icon,
.infra-flip-card:focus .infra-icon {
  transform: scale(1.15);
}

.infra-heading-front {
  font-size: 1.5rem;
  font-weight: 700;
  color: #dde5ff;
  text-transform: uppercase;
  text-align: center;
}

.infra-flip-back {
  background: #fefefe;
  color: #1a2c55;
  transform: rotateY(180deg);
  box-shadow: inset 0 0 15px rgba(58, 96, 186, 0.1);
  padding-top: 40px;
  text-align: center;
  user-select: text;
}

/* Ensure the front/back are stacked correctly in 3D */
.infra-flip-front { z-index: 2; }
.infra-flip-back { z-index: 1; }

.infra-description {
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.6;
  padding: 0 16px;
}

/* Responsive */
@media (max-width: 900px) {
  .infra-flip-container {
    flex-direction: column;
    gap: 24px;
  }
  .infra-flip-card {
    width: 90vw;
    height: 320px;
  }
  .infra-title {
    font-size: 2.2rem;
  }
  .infra-quote {
    font-size: 1.1rem;
    max-width: 90%;
  }
  .infra-intro {
    font-size: 1rem;
    max-width: 90%;
  }
}