/* components/infrastructure/infrastructure.css */

.infrastructure {
  padding: 120px 0;
  background: var(--dark-variant-3);
  position: relative;
  transition: background 0.5s ease;
}

/* Добавляем subtle gradient overlay при наведении на секцию */
.infrastructure::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
  z-index: 0;
}

.infrastructure:hover::before {
  opacity: 1;
}

.infrastructure__header {
  text-align: center;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.infrastructure__title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
  margin: 0 0 20px 0;
  letter-spacing: -1px;
  transition: transform 0.3s ease, text-shadow 0.3s ease;
  display: inline-block;
}

.infrastructure__title:hover {
  transform: translateY(-4px);
  text-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.infrastructure__description {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-300);
  margin: 0;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  transition: color 0.3s ease;
}

.infrastructure__header:hover .infrastructure__description {
  color: var(--gray-200);
}

.infrastructure__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}

.infrastructure__card {
  background: var(--dark-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

/* Разные оттенки для визуального разделения карточек */
.infrastructure__card:nth-child(4n+1) {
  background: rgba(20, 20, 20, 0.9);
}

.infrastructure__card:nth-child(4n+2) {
  background: rgba(18, 18, 18, 0.9);
}

.infrastructure__card:nth-child(4n+3) {
  background: rgba(22, 22, 22, 0.9);
}

.infrastructure__card:nth-child(4n+4) {
  background: rgba(16, 16, 16, 0.9);
}

/* Эффект свечения при наведении */
.infrastructure__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
  z-index: 2;
}

.infrastructure__card:hover::before {
  transform: scaleX(1);
}

.infrastructure__card:hover {
  border-color: var(--card-border-hover);
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-glow-white);
  background: rgba(26, 26, 26, 0.95);
}

.infrastructure__card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}

.infrastructure__card-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.5) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
}

.infrastructure__card:hover .infrastructure__card-image::before {
  opacity: 1;
}

.infrastructure__card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.4s ease;
}

.infrastructure__card:hover .infrastructure__card-image img {
  transform: scale(1.08);
  filter: brightness(1.1);
}

.infrastructure__card-content {
  padding: 24px;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--card-border);
  flex-grow: 1;
  display: flex;
  align-items: center;
  transition: background 0.3s ease;
}

.infrastructure__card:hover .infrastructure__card-content {
  background: rgba(0, 0, 0, 0.6);
}

.infrastructure__card-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--white);
  margin: 0;
  transition: transform 0.3s ease, color 0.3s ease;
}

.infrastructure__card:hover .infrastructure__card-title {
  transform: translateX(4px);
  color: var(--gray-100);
}

.infrastructure__card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.97);
  backdrop-filter: blur(20px);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  overflow-y: auto;
  border: 1px solid var(--card-border-hover);
}

.infrastructure__card:hover .infrastructure__card-overlay {
  opacity: 1;
  pointer-events: auto;
}

.infrastructure__card-overlay-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--white);
  margin: 0 0 12px 0;
  flex-shrink: 0;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.infrastructure__card-overlay-text {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-300);
  margin: 0;
}

/* Кастомный скроллбар для оверлея */
.infrastructure__card-overlay::-webkit-scrollbar {
  width: 6px;
}

.infrastructure__card-overlay::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.infrastructure__card-overlay::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
  transition: background 0.3s ease;
}

.infrastructure__card-overlay::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Firefox */
.infrastructure__card-overlay {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) rgba(255, 255, 255, 0.05);
}

@media (max-width: 1400px) {
  .infrastructure__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .infrastructure {
    padding: 80px 0;
  }

  .infrastructure__header {
    margin-bottom: 48px;
  }

  .infrastructure__title {
    font-size: 40px;
  }

  .infrastructure__description {
    font-size: 17px;
  }

  .infrastructure__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .infrastructure__card-content {
    padding: 20px;
  }

  .infrastructure__card-title {
    font-size: 17px;
  }

  .infrastructure__card-overlay {
    padding: 20px;
  }

  .infrastructure__card-overlay-title {
    font-size: 17px;
  }

  .infrastructure__card-overlay-text {
    font-size: 13px;
  }
}

@media (max-width: 768px) {
  .infrastructure {
    padding: 60px 0;
  }

  .infrastructure__header {
    margin-bottom: 40px;
  }

  .infrastructure__title {
    font-size: 32px;
  }

  .infrastructure__description {
    font-size: 16px;
  }

  .infrastructure__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .infrastructure__card {
    cursor: default;
  }

  .infrastructure__card:hover {
    transform: none;
  }

  .infrastructure__card-content {
    padding: 20px;
  }

  .infrastructure__card-title {
    font-size: 16px;
  }

  .infrastructure__card-overlay {
    position: static;
    opacity: 1;
    background: rgba(0, 0, 0, 0.6);
    padding: 20px;
    border-top: 1px solid var(--card-border);
    border: none;
    overflow-y: visible;
  }

  .infrastructure__card-overlay-title {
    display: none;
  }

  .infrastructure__card-overlay-text {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .infrastructure__title {
    font-size: 28px;
  }

  .infrastructure__description {
    font-size: 15px;
  }
}