/* Timeline visual for high-impact projects */
.timeline-section {
  padding: 2em 0;
  background: linear-gradient(120deg, #232526 0%, #414345 100%);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 2em 0;
}

.timeline:before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  width: 4px;
  height: 100%;
  background: #00c6ff;
  background: linear-gradient(180deg, #00c6ff 0%, #0072ff 100%);
  transform: translateX(-50%);
  border-radius: 2px;
  z-index: 0;
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 1.5em 2em;
  box-sizing: border-box;
}

.timeline-item.left {
  left: 0;
  text-align: right;
}

.timeline-item.right {
  left: 50%;
  text-align: left;
}

.timeline-content {
  background: rgba(255,255,255,0.08);
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  padding: 1.5em 2em;
  position: relative;
  z-index: 1;
  color: #fff;
  border: 1px solid rgba(0,198,255,0.2);
  backdrop-filter: blur(4px);
}

.timeline-item.left .timeline-content {
  margin-right: 2em;
}
.timeline-item.right .timeline-content {
  margin-left: 2em;
}

.timeline-content h2 {
  margin-top: 0;
  color: #00c6ff;
  font-size: 1.3em;
}
.timeline-content a {
  color: #fff;
  text-decoration: underline;
}
.timeline-content a:hover {
  color: #00c6ff;
}
.tech-label {
  display: inline-block;
  background: #0072ff;
  color: #fff;
  border-radius: 8px;
  padding: 0.2em 0.7em;
  font-size: 0.9em;
  margin-top: 0.5em;
  margin-right: 0.5em;
}
.date-label {
  display: inline-block;
  color: #b2ebf2;
  font-size: 0.85em;
  margin-top: 0.5em;
}
@media (max-width: 900px) {
  .timeline-item, .timeline-item.left, .timeline-item.right {
    width: 100%;
    left: 0;
    text-align: left;
    margin-bottom: 2em;
  }
  .timeline:before {
    left: 20px;
  }
  .timeline-content {
    margin: 0 0 0 2.5em;
  }
}

.main-header {
  text-align: center;
  padding: 2em 0 1em 0;
  background: #232526;
  color: #fff;
}
.main-header h1 {
  font-size: 2.2em;
  margin-bottom: 0.2em;
  color: #00c6ff;
}
.subtitle {
  color: #b2ebf2;
  font-size: 1.1em;
  margin-bottom: 0;
}