/* TIMELINE PAGE */

.timeline-container {
  max-width: 800px;
  margin: 50px auto 60px;
  padding: 0 5%;
  position: relative;
}

/* Vertical line */
.timeline-container::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, #4facfe, #7c3aed, rgba(124,58,237,.1));
  transform: translateX(-50%);
}

/* Each timeline item */
.tl-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 50px;
  position: relative;
}

.tl-item:nth-child(odd) { flex-direction: row; }
.tl-item:nth-child(even) { flex-direction: row-reverse; }

/* Dot on the center line */
.tl-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4facfe, #7c3aed);
  border: 3px solid var(--bg-main);
  position: absolute;
  left: 50%;
  top: 10px;
  transform: translateX(-50%);
  z-index: 2;
  box-shadow: 0 0 12px rgba(79,172,254,.3);
  transition: transform .3s;
}
.tl-item:hover .tl-dot { transform: translateX(-50%) scale(1.3); }

/* Content card */
.tl-content {
  width: 44%;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 16px;
  padding: 24px;
  transition: all .35s ease;
}
.tl-item:hover .tl-content {
  border-color: rgba(79,172,254,.2);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,.2);
}

.tl-item:nth-child(odd) .tl-content { margin-right: auto; }
.tl-item:nth-child(even) .tl-content { margin-left: auto; }

.tl-year {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 1px;
  background: rgba(79,172,254,.1);
  color: #4facfe;
  border: 1px solid rgba(79,172,254,.15);
  margin-bottom: 10px;
}

.tl-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.tl-content p {
  font-size: .88rem;
  color: var(--text-dim);
  line-height: 1.65;
}

.tl-content .tl-subtitle {
  font-size: .82rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}

/* Light theme */
body.light-theme .tl-content {
  background: rgba(0,0,0,.02);
  border-color: rgba(0,0,0,.06);
}
body.light-theme .tl-content:hover {
  box-shadow: 0 12px 36px rgba(0,0,0,.06);
}
body.light-theme .tl-dot { border-color: var(--bg-main); }

/* Responsive */
@media (max-width: 700px) {
  .timeline-container::before { left: 24px; }
  .tl-item,
  .tl-item:nth-child(odd),
  .tl-item:nth-child(even) {
    flex-direction: row;
    padding-left: 50px;
  }
  .tl-dot {
    left: 24px;
    top: 10px;
  }
  .tl-content {
    width: 100%;
    margin: 0 !important;
  }
}