/* Timeline Styles for Project Documentation */

/* ===== TIMELINE CONTAINER ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 2rem auto;
  padding: 1rem 0;
}

/* ===== TIMELINE LINE ===== */
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(
    180deg,
    var(--md-primary-fg-color) 0%,
    var(--md-accent-fg-color) 100%
  );
  transform: translateX(-50%);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* ===== TIMELINE ITEM ===== */
.timeline-item {
  position: relative;
  margin: 2rem 0;
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

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

/* ===== TIMELINE MARKER ===== */
.timeline-marker {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background: var(--md-primary-fg-color);
  border: 4px solid var(--md-default-bg-color);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 0 4px var(--md-primary-fg-color--light);
  transition: all 0.3s ease;
}

.timeline-item:hover .timeline-marker {
  transform: translateX(-50%) scale(1.2);
  background: var(--md-accent-fg-color);
  box-shadow: 0 0 0 4px var(--md-accent-fg-color--transparent);
}

/* ===== TIMELINE CONTENT ===== */
.timeline-content {
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 1rem;
  padding: 1.5rem;
  width: 45%;
  position: relative;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}

[data-md-color-scheme="slate"] .timeline-content {
  background: var(--md-code-bg-color);
  border-color: var(--md-default-fg-color--lightest);
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-right: auto;
  margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: auto;
  margin-right: 0;
}

.timeline-content:hover {
  transform: translateY(-30px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1), 0 3px 6px rgba(0, 0, 0, 0.08);
}

/* ===== TIMELINE CONTENT ARROWS ===== */
.timeline-content::before {
  content: "";
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border: 10px solid transparent;
  transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::before {
  right: -20px;
  border-left-color: var(--md-default-fg-color--lightest);
}

.timeline-item:nth-child(even) .timeline-content::before {
  left: -20px;
  border-right-color: var(--md-default-fg-color--lightest);
}

.timeline-content::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border: 9px solid transparent;
  transform: translateY(-50%);
}

.timeline-item:nth-child(odd) .timeline-content::after {
  right: -18px;
  border-left-color: var(--md-default-bg-color);
}

.timeline-item:nth-child(even) .timeline-content::after {
  left: -18px;
  border-right-color: var(--md-default-bg-color);
}

[data-md-color-scheme="slate"]
  .timeline-item:nth-child(odd)
  .timeline-content::after {
  border-left-color: var(--md-code-bg-color);
}

[data-md-color-scheme="slate"]
  .timeline-item:nth-child(even)
  .timeline-content::after {
  border-right-color: var(--md-code-bg-color);
}

/* ===== TIMELINE CONTENT TEXT ===== */
.timeline-content h4 {
  margin: 0 0 0.5rem 0;
  color: var(--md-primary-fg-color);
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.timeline-content p {
  margin: 0;
  color: var(--md-default-fg-color--light);
  line-height: 1.6;
  font-size: 0.9rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .timeline::before {
    left: 30px;
  }

  .timeline-item {
    flex-direction: row !important;
    padding-left: 60px;
  }

  .timeline-item:nth-child(even) {
    flex-direction: row !important;
  }

  .timeline-marker {
    left: 30px;
    transform: translateX(-50%);
  }

  .timeline-content {
    width: 100%;
    margin: 0 !important;
  }

  .timeline-content::before,
  .timeline-content::after {
    display: none;
  }
}

/* ===== TIMELINE VARIANTS ===== */
.timeline.compact .timeline-item {
  margin: 1rem 0;
}

.timeline.compact .timeline-content {
  padding: 1rem;
}

.timeline.compact .timeline-content h4 {
  font-size: 1rem;
}

.timeline.compact .timeline-content p {
  font-size: 0.85rem;
}

/* ===== ANIMATION ENHANCEMENTS ===== */
.timeline-item {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.timeline-item:nth-child(1) {
  animation-delay: 0.1s;
}
.timeline-item:nth-child(2) {
  animation-delay: 0.2s;
}
.timeline-item:nth-child(3) {
  animation-delay: 0.3s;
}
.timeline-item:nth-child(4) {
  animation-delay: 0.4s;
}
.timeline-item:nth-child(5) {
  animation-delay: 0.5s;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== TIMELINE WITH STATUS INDICATORS ===== */
.timeline-content .status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding: 0.3rem 0.8rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-indicator.completed {
  background: rgba(34, 197, 94, 0.1);
  color: #16a34a;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.status-indicator.in-progress {
  background: rgba(251, 191, 36, 0.1);
  color: #d97706;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.status-indicator.planned {
  background: rgba(107, 114, 128, 0.1);
  color: #6b7280;
  border: 1px solid rgba(107, 114, 128, 0.3);
}

.status-indicator::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

/* ===== PRINT STYLES FOR TIMELINE ===== */
@media print {
  .timeline::before {
    background: #333 !important;
  }

  .timeline-marker {
    background: #333 !important;
    border-color: white !important;
    box-shadow: none !important;
  }

  .timeline-content {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .timeline-content::before,
  .timeline-content::after {
    display: none !important;
  }

  .timeline-item {
    flex-direction: row !important;
    margin: 1rem 0;
    page-break-inside: avoid;
  }

  .timeline-content {
    width: 100% !important;
    margin: 0 0 0 40px !important;
  }

  .timeline::before {
    left: 20px !important;
  }

  .timeline-marker {
    left: 20px !important;
  }
}