/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 15px;
  width: 2px;
  height: 100%;
  background: var(--timeline-line);
  transform-origin: top;
  transition: background var(--transition-theme);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -33px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--timeline-dot);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--timeline-dot);
  transition: all var(--transition-normal);
  z-index: 1;
}

.timeline-item.current .timeline-dot {
  background: var(--timeline-dot-active);
  box-shadow: 0 0 0 3px var(--timeline-dot-active), 0 0 20px var(--accent-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 3px var(--timeline-dot-active), 0 0 20px var(--accent-glow); }
  50% { box-shadow: 0 0 0 6px var(--timeline-dot-active), 0 0 30px var(--accent-glow); }
}

.timeline-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  border-color: var(--accent-2);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.timeline-card.expanded {
  border-color: var(--accent-2);
  box-shadow: var(--shadow-lg);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.timeline-role {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-company {
  font-size: 0.9rem;
  color: var(--accent-2);
  font-weight: 500;
}

.timeline-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 4px 12px;
  background: var(--bg-tertiary);
  border-radius: 20px;
  flex-shrink: 0;
}

.timeline-expand-icon {
  color: var(--text-muted);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.timeline-card.expanded .timeline-expand-icon {
  transform: rotate(180deg);
}

.timeline-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding-top: 0;
}

.timeline-card.expanded .timeline-details {
  max-height: 600px;
  padding-top: 16px;
}

.timeline-details ul {
  padding: 0;
}

.timeline-details li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
  margin-bottom: 8px;
  line-height: 1.6;
}

.timeline-details li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--accent-2);
  font-weight: bold;
  font-family: var(--font-mono);
}

@media (max-width: 768px) {
  .timeline {
    padding-left: 30px;
  }
  .timeline::before {
    left: 10px;
  }
  .timeline-dot {
    left: -27px;
    width: 12px;
    height: 12px;
  }
  .timeline-header {
    flex-direction: column;
    gap: 8px;
  }
  .timeline-card {
    padding: 20px;
  }
}