/* ==========================================================================
   15.5 Heritage Timeline Section
   ========================================================================== */
.heritage-timeline-section {
  background-color: var(--bg-primary);
  background-image: 
    linear-gradient(rgba(197, 168, 128, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(197, 168, 128, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  padding-top: 90px;
  padding-bottom: 90px;
}

.heritage-container {
  width: 100%;
}

.heritage-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px auto;
}

.heritage-tagline {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 15px;
}

.timeline-wrapper {
  position: relative;
  margin-top: 50px;
  padding: 20px 0;
}

.timeline-line {
  position: absolute;
  top: 29px;
  left: 0;
  width: 75%; /* Ends exactly at the last node center */
  height: 3px;
  background: rgba(197, 168, 128, 0.2);
  z-index: 1;
  overflow: hidden;
}

.timeline-line::after {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: -220px;
  width: 220px;
  height: 10px;
  border-radius: 5px;
  background: linear-gradient(90deg, transparent 0%, var(--color-gold-light) 50%, transparent 100%);
  box-shadow: 0 0 25px 6px var(--color-gold-light);
  animation: lightPulse 6s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes lightPulse {
  0% {
    left: -220px;
  }
  70% {
    left: 100%;
  }
  100% {
    left: 100%;
  }
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
  z-index: 2;
}

.timeline-node {
  position: relative;
  padding-top: 50px;
  transition: var(--transition-smooth);
}

.node-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--color-gold);
  z-index: 3;
  transition: var(--transition-medium);
}

/* Staggered Node Dot Glow Animations */
.timeline-grid .timeline-node:nth-child(1) .node-dot {
  animation: dotGlow1 6s infinite cubic-bezier(0.4, 0, 0.2, 1);
}
.timeline-grid .timeline-node:nth-child(2) .node-dot {
  animation: dotGlow2 6s infinite cubic-bezier(0.4, 0, 0.2, 1);
}
.timeline-grid .timeline-node:nth-child(3) .node-dot {
  animation: dotGlow3 6s infinite cubic-bezier(0.4, 0, 0.2, 1);
}
.timeline-grid .timeline-node:nth-child(4) .node-dot {
  animation: dotGlow4 6s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes dotGlow1 {
  0%, 4% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
  9%, 12% {
    background-color: var(--color-gold-light);
    border-color: var(--color-gold-light);
    box-shadow: 0 0 18px 4px var(--color-gold-light);
    transform: scale(1.3);
  }
  17%, 100% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
}

@keyframes dotGlow2 {
  0%, 21% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
  26%, 29% {
    background-color: var(--color-gold-light);
    border-color: var(--color-gold-light);
    box-shadow: 0 0 18px 4px var(--color-gold-light);
    transform: scale(1.3);
  }
  34%, 100% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
}

@keyframes dotGlow3 {
  0%, 39% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
  44%, 47% {
    background-color: var(--color-gold-light);
    border-color: var(--color-gold-light);
    box-shadow: 0 0 18px 4px var(--color-gold-light);
    transform: scale(1.3);
  }
  52%, 100% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
}

@keyframes dotGlow4 {
  0%, 57% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
  62%, 65% {
    background-color: var(--color-gold-light);
    border-color: var(--color-gold-light);
    box-shadow: 0 0 18px 4px var(--color-gold-light);
    transform: scale(1.3);
  }
  70%, 100% {
    background-color: var(--bg-primary);
    border-color: var(--color-gold);
    box-shadow: none;
    transform: scale(1);
  }
}

.timeline-node:hover .node-dot {
  transform: scale(1.35) !important;
  background-color: var(--color-gold-light) !important;
  border-color: var(--color-gold-light) !important;
  box-shadow: 0 0 20px var(--color-gold-light) !important;
  animation: none !important;
}

.node-year {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 15px;
  transition: var(--transition-medium);
}

.timeline-node:hover .node-year {
  transform: translateY(-2px);
}

.node-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-highlight);
  margin-bottom: 10px;
  transition: var(--transition-medium);
}

.timeline-node:hover .node-title {
  color: var(--color-gold-light);
}

.node-text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
  text-align: left;
}

@media (max-width: 991px) {
  .timeline-line {
    top: 0;
    left: 8px;
    width: 3px;
    height: 100%;
    overflow: hidden;
  }
  .timeline-line::after {
    left: 50%;
    transform: translateX(-50%);
    top: -220px;
    width: 10px;
    height: 220px;
    border-radius: 5px;
    background: linear-gradient(180deg, transparent 0%, var(--color-gold-light) 50%, transparent 100%);
    box-shadow: 0 0 25px 6px var(--color-gold-light);
    animation: lightPulseVertical 6s infinite cubic-bezier(0.4, 0, 0.2, 1);
  }
  @keyframes lightPulseVertical {
    0% {
      top: -220px;
    }
    70% {
      top: 100%;
    }
    100% {
      top: 100%;
    }
  }
  .timeline-grid {
    grid-template-columns: 1fr;
    gap: 45px;
  }
  .timeline-node {
    padding-top: 0;
    padding-left: 45px;
  }
  .node-dot {
    top: 6px;
    left: 0;
  }
}