/* ==========================================================================
   INFRASTRUCTURE SECTION — Năng Lực Sản Xuất
   Prefix: infra-
   Loaded on homepage only (conditional enqueue)
   ========================================================================== */

/* ── Section ── */
.infra-section {
  background: var(--bg-secondary, #FAF8F5);
  padding: 80px 0;
  overflow: hidden;
}

/* ── Color overrides — light theme ── */
#infra.infra-section,
#infra.infra-section h2,
#infra.infra-section h3,
#infra.infra-section h4,
#infra.infra-section p,
#infra.infra-section span,
#infra.infra-section a {
  color: var(--text-primary, #1A1A1A);
}

#infra.infra-section .infra-header__label {
  color: var(--brand-primary, #B8860B) !important;
}

#infra .infra-featured__location,
#infra .infra-featured__desc {
  color: rgba(255, 255, 255, 0.80);
}

#infra .infra-featured__content,
#infra .infra-featured__content h3,
#infra .infra-featured__content span,
#infra .infra-featured__content p {
  color: #FFFFFF;
}

#infra .infra-card__desc {
  color: var(--text-secondary, #555555);
}

#infra .infra-featured__gold {
  color: var(--brand-secondary, #C9A96E);
}

#infra .infra-stats-bar__label {
  color: rgba(255, 255, 255, 0.80);
}

#infra .infra-stats-bar__number {
  color: #FFFFFF;
}

.infra-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ── Section Header — matches global .section-header pattern ── */
.infra-header {
  margin-bottom: var(--space-2xl, 48px);
  text-align: left;
}

.infra-header__label {
  display: block;
  font-family: var(--font-label, 'Inter', sans-serif);
  font-size: var(--fs-caption, 12px);
  font-weight: var(--fw-semibold, 600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-primary, #B8860B);
  margin-bottom: var(--space-xs, 8px);
}

.infra-header__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h2, clamp(1.75rem, 4vw, 2.5rem));
  font-weight: var(--fw-bold, 700);
  color: var(--text-primary, #1A1A1A);
  line-height: 1.2;
  margin: 0 0 var(--space-sm, 8px);
  text-transform: uppercase;
}

.infra-header__accent {
  width: 64px;
  height: 2px;
  background: var(--brand-primary, #B8860B);
  margin-top: 12px;
  transform-origin: left;
}

.infra-header.infra-visible .infra-header__accent {
  animation: infraAccentGrow 0.6s cubic-bezier(0.23, 1, 0.32, 1) 0.5s both;
}

@keyframes infraAccentGrow {
  from {
    transform: scaleX(0);
  }

  to {
    transform: scaleX(1);
  }
}

/* ── Bento Grid ── */
.infra-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

/* ── Featured Card ── */
.infra-featured {
  grid-column: 1 / 7;
  grid-row: 1 / 3;
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  min-height: 480px;
  cursor: pointer;
}

.infra-featured__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.infra-featured:hover .infra-featured__img {
  transform: scale(1.05);
}

.infra-featured__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.80) 0%,
      rgba(0, 0, 0, 0.40) 40%,
      rgba(0, 0, 0, 0.10) 70%,
      transparent 100%);
  z-index: 1;
  transition: background 0.3s ease;
}

.infra-featured:hover .infra-featured__overlay {
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.85) 0%,
      rgba(0, 0, 0, 0.50) 40%,
      rgba(0, 0, 0, 0.15) 70%,
      transparent 100%);
}

.infra-featured__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  z-index: 2;
}

.infra-featured__badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.infra-featured__location {
  display: inline-block;
  background: rgba(255, 255, 255, 0.10);
  padding: 4px 12px;
  border-radius: 20px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.60);
  margin-bottom: 12px;
}

.infra-featured__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.2;
  margin: 0 0 8px;
}

.infra-featured__gold {
  color: #C9A96E;
}

.infra-featured__desc {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.70);
  line-height: 1.5;
  margin: 0;
  max-width: 380px;
}

/* ── Info Cards (2×2 right side) ── */
.infra-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color, #E0DCD5);
  border-radius: 12px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.infra-card:nth-child(2) {
  grid-column: 7 / 10;
  grid-row: 1;
}

.infra-card:nth-child(3) {
  grid-column: 10 / 13;
  grid-row: 1;
}

.infra-card:nth-child(4) {
  grid-column: 7 / 10;
  grid-row: 2;
}

.infra-card:nth-child(5) {
  grid-column: 10 / 13;
  grid-row: 2;
}

.infra-card:hover {
  border-color: var(--brand-secondary, #C9A96E);
  transform: scale(1.02) translateY(-4px);
  background: #FFFFFF;
  box-shadow: 0 8px 32px rgba(184, 134, 11, 0.12);
}

.infra-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(201, 169, 110, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #C9A96E;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.infra-card__stat {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--brand-primary, #B8860B);
  line-height: 1;
}

.infra-card__stat--icon {
  font-size: 28px;
}

.infra-card__title {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary, #1A1A1A);
  margin: 4px 0 0;
}

.infra-card__desc {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary, #555555);
  line-height: 1.5;
  margin: 6px 0 0;
}

.infra-card__link {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-primary, #B8860B);
  text-decoration: none;
  margin-top: 12px;
  transition: color 0.2s ease;
}

.infra-card__link:hover {
  color: var(--brand-primary-dark, #946B09);
  text-decoration: underline;
}

.infra-card__tag {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--brand-primary, #B8860B);
  margin-top: 12px;
}

.infra-card__footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color, #E0DCD5);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary, #1A1A1A);
}

/* ── Stats Bar ── */
.infra-stats-bar {
  background: linear-gradient(135deg, var(--brand-primary, #B8860B), var(--brand-secondary, #C9A96E));
  border-radius: 12px;
  padding: 28px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}

.infra-stats-bar__item {
  text-align: center;
  flex: 1;
  position: relative;
}

.infra-stats-bar__item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.25);
}

.infra-stats-bar__number {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: #FFFFFF;
  will-change: contents;
  contain: layout style;
}

.infra-stats-bar__label {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.80);
  margin-top: 4px;
}

/* ── Animations ──
   Elements are VISIBLE by default.
   Only hidden when JS adds .infra-js-ready to section. */
.infra-js-ready .infra-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.23, 1, 0.32, 1),
    transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
  transition-delay: var(--delay, 0ms);
}

.infra-js-ready .infra-fade-up.infra-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════ */

/* ── Tablet (768px – 1279px) ── */
@media (min-width: 769px) and (max-width: 1279px) {
  .infra-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .infra-featured {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 360px;
  }

  .infra-card:nth-child(2),
  .infra-card:nth-child(3),
  .infra-card:nth-child(4),
  .infra-card:nth-child(5) {
    grid-column: span 1;
    grid-row: auto;
  }

  .infra-stats-bar {
    padding: 24px 28px;
  }
}

/* ── Mobile (≤768px) ── */
@media (max-width: 768px) {
  .infra-section {
    padding: 60px 0;
  }

  .infra-container {
    padding: 0 20px;
  }

  .infra-header__title {
    font-size: clamp(1.5rem, 5vw, 2rem);
  }

  .infra-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .infra-featured {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 280px;
    border-radius: 12px;
  }

  .infra-card {
    display: none;
  }

  .infra-stats-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 24px;
  }

  .infra-stats-bar__item:not(:last-child)::after {
    display: none;
  }

  .infra-stats-bar__number {
    font-size: 24px;
  }
}