/* ==============================
   Changelog page
   ============================== */

.changelog-section {
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 30px 56px;
}

/* Header */
.changelog-header {
  text-align: center;
  margin-bottom: 40px;
}

.changelog-header h2 {
  font-size: 1.8rem;
  color: var(--heading-color);
  margin-bottom: 6px;
}

.changelog-subtitle {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.back-link:hover {
  color: var(--text-color);
}

/* Timeline container */
.changelog-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Single entry row: meta (dot + date) + card */
.changelog-entry {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 0 20px;
  position: relative;
}

/* Vertical connector line between entries */
.changelog-entry::after {
  content: '';
  position: absolute;
  left: 73px; /* center of the dot column */
  top: 22px;
  bottom: -1px;
  width: 1px;
  background: var(--border-color);
}

.changelog-entry:last-child::after {
  display: none;
}

/* ---- Meta column (dot + date) ---- */
.changelog-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 14px;
  gap: 6px;
  position: relative;
  z-index: 1;
}

.changelog-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid var(--background-color);
}

.dot-new      { background-color: #3fb950; }
.dot-improved { background-color: #58a6ff; }
.dot-fixed    { background-color: #d29922; }

.changelog-date {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.3px;
  white-space: nowrap;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ---- Card column ---- */
.changelog-card {
  background: #1a1a1a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-medium);
  padding: 14px 18px 16px;
  margin-bottom: 14px;
}

.changelog-card h3 {
  font-size: 0.97rem;
  color: var(--heading-color);
  font-weight: 500;
  margin: 4px 0 6px;
}

.changelog-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* Tags */
.changelog-tag {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  padding: 2px 8px;
  border-radius: 3px;
}

.tag-new {
  background-color: rgba(46, 160, 67, 0.15);
  color: #3fb950;
}

.tag-improved {
  background-color: rgba(56, 132, 244, 0.15);
  color: #58a6ff;
}

.tag-fixed {
  background-color: rgba(219, 109, 40, 0.15);
  color: #d29922;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .changelog-section {
    padding: 16px 16px 40px;
  }

  .changelog-entry {
    grid-template-columns: 72px 1fr;
    gap: 0 12px;
  }

  .changelog-entry::after {
    left: 57px;
  }

  .changelog-date {
    font-size: 0.65rem;
  }

  .changelog-card {
    padding: 12px 14px 14px;
  }
}