/* Changelog page — matches dark secondary-landing + homepage motion feel */

.changelog-hero {
  padding: 72px 0 48px;
  text-align: center;
}

.changelog-hero .hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  background: linear-gradient(180deg, #f5f9fb 0%, #aebfca 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.changelog-hero .hero-subtitle {
  max-width: 640px;
  margin: 0 auto 1.75rem;
  color: rgba(215, 226, 234, 0.72);
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  font-weight: 300;
  line-height: 1.6;
}

.changelog-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.changelog-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.15rem;
  border: 1px solid rgba(215, 226, 234, 0.22);
  border-radius: 999px;
  color: #d7e2ea;
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: opacity 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.changelog-link-btn:hover {
  opacity: 0.85;
  border-color: rgba(215, 226, 234, 0.5);
  transform: translateY(-2px);
}

.changelog-link-btn--accent {
  background: rgba(215, 226, 234, 0.08);
}

.changelog-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: center;
  margin-top: 1.5rem;
  color: rgba(215, 226, 234, 0.45);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
}

.changelog-section {
  padding: 24px 0 96px;
}

.changelog-timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 1.5rem;
}

.changelog-timeline::before {
  content: '';
  position: absolute;
  left: 0.35rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background: linear-gradient(
    180deg,
    rgba(215, 226, 234, 0.35) 0%,
    rgba(215, 226, 234, 0.08) 100%
  );
}

.changelog-release {
  position: relative;
  margin-bottom: 2.5rem;
  padding: 1.5rem 1.35rem 1.35rem 1.5rem;
  border: 1px solid rgba(215, 226, 234, 0.12);
  background:
    linear-gradient(145deg, rgba(215, 226, 234, 0.04) 0%, rgba(12, 12, 12, 0.2) 100%);
}

.changelog-release::before {
  content: '';
  position: absolute;
  left: calc(-1.5rem + 0.2rem);
  top: 1.85rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #d7e2ea;
  box-shadow: 0 0 0 4px rgba(12, 12, 12, 1), 0 0 16px rgba(215, 226, 234, 0.35);
}

.changelog-release-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 0.85rem;
}

.changelog-version {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #f4f8f6;
  margin: 0;
}

.changelog-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.changelog-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border: 1px solid rgba(215, 226, 234, 0.2);
  color: rgba(215, 226, 234, 0.75);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.changelog-summary {
  margin: 0 0 1.1rem;
  color: rgba(215, 226, 234, 0.7);
  font-size: 0.98rem;
  line-height: 1.65;
  font-weight: 300;
}

.changelog-section-block {
  margin-bottom: 1rem;
}

.changelog-section-block:last-child {
  margin-bottom: 0;
}

.changelog-section-heading {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 600;
  color: #d7e2ea;
}

.changelog-items {
  margin: 0;
  padding-left: 1.1rem;
  color: rgba(215, 226, 234, 0.68);
  line-height: 1.65;
}

.changelog-items li {
  margin-bottom: 0.35rem;
}

.changelog-loading,
.changelog-empty,
.changelog-error {
  text-align: center;
  padding: 3rem 1rem;
  color: rgba(215, 226, 234, 0.55);
  font-weight: 300;
}

.changelog-skeleton {
  max-width: 820px;
  margin: 0 auto;
}

.changelog-skeleton-card {
  height: 140px;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(215, 226, 234, 0.1);
  background: linear-gradient(
    90deg,
    rgba(215, 226, 234, 0.04) 0%,
    rgba(215, 226, 234, 0.09) 50%,
    rgba(215, 226, 234, 0.04) 100%
  );
  background-size: 200% 100%;
  animation: changelog-shimmer 1.4s ease-in-out infinite;
}

@keyframes changelog-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .changelog-skeleton-card {
    animation: none;
  }
  .changelog-link-btn:hover,
  .changelog-page-btn:hover:not(:disabled) {
    transform: none;
  }
}

.changelog-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1rem;
  max-width: 820px;
  margin: 2rem auto 0;
  padding-top: 0.5rem;
}

.changelog-page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 6.5rem;
  padding: 0.55rem 1rem;
  border: 1px solid rgba(215, 226, 234, 0.22);
  border-radius: 999px;
  background: rgba(215, 226, 234, 0.04);
  color: #d7e2ea;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.changelog-page-btn:hover:not(:disabled) {
  opacity: 0.85;
  border-color: rgba(215, 226, 234, 0.5);
  transform: translateY(-1px);
}

.changelog-page-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.changelog-page-status {
  color: rgba(215, 226, 234, 0.55);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

@media (max-width: 640px) {
  .changelog-timeline {
    padding-left: 1.1rem;
  }
  .changelog-release {
    padding: 1.15rem;
  }
  .changelog-page-btn {
    min-width: 5.5rem;
    padding: 0.5rem 0.85rem;
    font-size: 0.75rem;
  }
}