/* ── Changes / Timeline Page Styles ──────────── */

.changes-hero {
  padding: 2.5rem 2rem 2rem;
}
.changes-hero h1 {
  font-size: 1.9rem;
}

/* Source footer */
.source-footer {
  text-align: center;
  padding: 1.5rem 2rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  border-top: 1px solid var(--border);
}
.source-footer a {
  color: var(--accent);
  text-decoration: none;
}
.source-footer a:hover { text-decoration: underline; }

/* ── Timeline Container ──────────────────────── */
.timeline-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
  position: relative;
}

/* Vertical line */
.timeline-container::before {
  content: '';
  position: absolute;
  left: 40px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--accent) 5%,
    var(--accent) 95%,
    transparent 100%
  );
  opacity: 0.3;
}

/* ── Year Marker ─────────────────────────────── */
.year-marker {
  position: relative;
  padding-left: 80px;
  margin-bottom: 0.5rem;
  margin-top: 2rem;
}
.year-marker:first-child {
  margin-top: 0;
}
.year-dot {
  position: absolute;
  left: 30px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent), 0 0 12px var(--accent-glow);
  z-index: 2;
}
.year-label {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

/* ── Change Card ─────────────────────────────── */
.change-card {
  position: relative;
  padding-left: 80px;
  margin-bottom: 1.5rem;
}
.change-dot {
  position: absolute;
  left: 34px;
  top: 1.5rem;
  width: 14px;
  height: 14px;
  background: var(--bg-card);
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  z-index: 2;
  transition: all 0.3s;
}
.change-card:hover .change-dot {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.change-body {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
.change-card:hover .change-body {
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateY(-2px);
}

/* Card header with flag comparison */
.change-header {
  display: flex;
  align-items: stretch;
  min-height: 140px;
}

/* Flag comparison area */
.flag-compare {
  flex: 0 0 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: #f5f5f5;
  position: relative;
  padding: 1rem;
}
.flag-compare img {
  max-width: 120px;
  max-height: 80px;
  object-fit: contain;
  border-radius: 4px;
  border: 1px solid rgba(0,0,0,0.08);
  transition: transform 0.3s;
}
.change-card:hover .flag-compare img {
  transform: scale(1.05);
}
.flag-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 0.75rem;
  color: #999;
}
.flag-arrow-icon {
  font-size: 1.5rem;
  line-height: 1;
}
.flag-label {
  font-size: 0.6rem;
  font-weight: 600;
  color: #999;
  text-align: center;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Info area */
.change-info {
  flex: 1;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.change-country {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.change-country-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.change-country-en {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.change-type-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.badge-new      { background: rgba(255,107,107,0.15); color: #ff6b6b; }
.badge-modify   { background: rgba(255,193,7,0.15); color: #ffc107; }
.badge-revert   { background: rgba(0,201,167,0.15); color: #00c9a7; }
.badge-defacto  { background: rgba(108,92,231,0.15); color: #6c5ce7; }
.badge-reject   { background: rgba(136,136,160,0.15); color: #8888a0; }
.badge-color    { background: rgba(54,162,235,0.15); color: #36a2eb; }

.change-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.change-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.change-description strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 768px) {
  .changes-hero h1 { font-size: 1.4rem; }
  .timeline-container { padding: 1rem; }
  .timeline-container::before { left: 20px; }
  .year-marker { padding-left: 50px; }
  .year-dot { left: 10px; width: 18px; height: 18px; }
  .change-card { padding-left: 50px; }
  .change-dot { left: 14px; width: 10px; height: 10px; }
  .change-header { flex-direction: column; }
  .flag-compare { flex: none; min-height: 100px; }
  .flag-compare img { max-width: 90px; max-height: 60px; }
}

/* ── Card enter animation ────────────────────── */
@keyframes timelineIn {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}
.change-card {
  animation: timelineIn 0.5s ease-out both;
}
.year-marker {
  animation: timelineIn 0.4s ease-out both;
}