:root {
  --bg: #f6f5f1;
  --paper: #fffdf8;
  --ink: #1f1b16;
  --muted: #655b4f;
  --line: #d8cfbf;
  --accent: #0f766e;
  --accent-2: #b45309;
  --good: #166534;
  --bad: #991b1b;
  --radius: 16px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at -10% -20%, #d8eadf 0%, transparent 65%),
    radial-gradient(1100px 480px at 110% -10%, #f7dfc6 0%, transparent 70%),
    var(--bg);
}

.bg-orb {
  position: fixed;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  filter: blur(45px);
  z-index: -1;
  opacity: 0.35;
}
.orb-a { top: 8%; left: -80px; background: #82c7ae; }
.orb-b { top: 42%; right: -100px; background: #f1b67a; }

.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px 18px 8px;
}
.brand {
  text-decoration: none;
  color: var(--ink);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}
.subtitle { color: var(--muted); margin-top: 6px; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 18px 50px;
}

.hero {
  background: linear-gradient(140deg, #fffdf8, #fff8ee);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
}

h1, h2, h3, h4 {
  font-family: "Palatino", "Book Antiqua", "Times New Roman", serif;
  margin-top: 0;
}
h2 { margin-top: 30px; }

.muted { color: var(--muted); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.stat-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
}
.stat-label { color: var(--muted); font-size: 0.88rem; }
.stat-value { font-size: 1.5rem; font-weight: 750; }

.timeline {
  list-style: none;
  counter-reset: diffindex;
  margin: 0;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.timeline-item {
  counter-increment: diffindex;
  margin: 0;
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 8px;
  align-items: center;
}
.timeline-item::before {
  content: counter(diffindex) ".";
  color: var(--muted);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.timeline-link {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
  text-decoration: none;
  color: inherit;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  width: 100%;
}
.timeline-link:hover {
  background: #fff9ef;
}
.timeline-dates {
  font-weight: 700;
}
.timeline-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.9rem;
  justify-content: flex-end;
}

.count-pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid #c9bc9f;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}
.count-pill.added {
  border-color: #7cbf93;
  background: #eaf9ef;
  color: #0f5132;
}
.count-pill.removed {
  border-color: #d7a0a0;
  background: #ffefef;
  color: #7f1d1d;
}
.count-pill.modified {
  border-color: #d9c089;
  background: #fff5df;
  color: #7a4b03;
}
.count-pill.renumbered {
  border-color: #8fb9d9;
  background: #ecf6ff;
  color: #1f4d76;
}

.release-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.release-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}

.rule-detail {
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 12px;
  padding: 8px 12px;
  margin: 10px 0;
}
.rule-detail summary {
  cursor: pointer;
  font-weight: 650;
}
.arrow { margin: 0 5px; color: var(--muted); }

.pill {
  display: inline-block;
  border: 1px solid #b6a98f;
  background: #fef5e8;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.84rem;
  font-weight: 700;
}
.pill.added { border-color: #7cbf93; background: #eaf9ef; color: #0f5132; }
.pill.removed { border-color: #d7a0a0; background: #ffefef; color: #7f1d1d; }

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 10px;
}
.rule-text {
  margin: 0;
  line-height: 1.55;
  padding: 10px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: #fff;
}

.tok-ins {
  background: #d8f6df;
  border-radius: 4px;
  box-decoration-break: clone;
}
.tok-del {
  background: #ffdede;
  border-radius: 4px;
  text-decoration: line-through;
  box-decoration-break: clone;
}

@media (max-width: 820px) {
  .diff-grid { grid-template-columns: 1fr; }
  .timeline-link { flex-direction: column; align-items: flex-start; }
  .timeline-stats { justify-content: flex-start; }
  .site-header { padding: 18px 14px 6px; }
  .container { padding: 10px 14px 40px; }
}

/* ── Document view ─────────────────────────────────────────────────────────── */

.change-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
}
.change-nav-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.change-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  max-height: 180px;
  overflow-y: auto;
}
.change-nav-links a { text-decoration: none; }

.doc-view {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* Collapsed unchanged group */
.unchanged-group {
  border: none;
  background: transparent;
  padding: 0;
  margin: 0;
}
.unchanged-group > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-radius: 8px;
  border: 1px dashed #c9c0af;
  color: var(--muted);
  font-size: 0.84rem;
  user-select: none;
  transition: background 0.15s;
}
.unchanged-group > summary::-webkit-details-marker { display: none; }
.unchanged-group > summary::marker { display: none; }
.unchanged-group > summary:hover { background: #f0ece4; }
.expand-chevron {
  display: inline-block;
  font-style: normal;
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.18s;
  flex-shrink: 0;
}
.unchanged-group[open] > summary .expand-chevron { transform: rotate(90deg); }
.range-hint {
  font-family: "Menlo", "Monaco", monospace;
  font-size: 0.76rem;
  opacity: 0.65;
  margin-left: auto;
}
.unchanged-rules-list {
  border-left: 2px solid #d8cfbf;
  margin-left: 18px;
  padding: 4px 0;
}
.doc-rule.unchanged {
  display: grid;
  grid-template-columns: 7ch 1fr;
  gap: 10px;
  padding: 3px 12px;
  font-size: 0.87rem;
  line-height: 1.5;
}

/* Offset anchor targets below the sticky nav (updated dynamically by JS) */
.doc-rule,
.renumber-group {
  scroll-margin-top: 120px;
}

/* Changed rule cards */
.doc-rule.modified,
.doc-rule.added,
.doc-rule.removed,
.doc-rule.renumbered,
.doc-rule.renumbered-and-modified {
  border-radius: 10px;
  border: 1px solid;
  padding: 12px 14px;
  margin: 6px 0;
}
.doc-rule.modified { background: #fffdf5; border-color: #e6cc88; }
.doc-rule.added    { background: #f0faf3; border-color: #7cbf93; }
.doc-rule.removed  { background: #fff5f5; border-color: #d7a0a0; }
.doc-rule.renumbered              { background: #f0f6ff; border-color: #8fb9d9; }
.doc-rule.renumbered-and-modified { background: #f8f0ff; border-color: #c4a0d9; }

.rule-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.doc-rule-num {
  font-weight: 700;
  font-family: "Menlo", "Monaco", monospace;
  font-size: 0.88rem;
  color: var(--muted);
  white-space: nowrap;
}
.doc-rule-num.modified           { color: #7a4b03; }
.doc-rule-num.added              { color: #0f5132; }
.doc-rule-num.removed            { color: #7f1d1d; }
.doc-rule-num.renumbered         { color: #1f4d76; }
.doc-rule-num.renumbered-and-modified { color: #4b1d7a; }

.change-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.change-badge.modified           { background: #fff5df; color: #7a4b03; border: 1px solid #d9c089; }
.change-badge.added              { background: #eaf9ef; color: #0f5132; border: 1px solid #7cbf93; }
.change-badge.removed            { background: #ffefef; color: #7f1d1d; border: 1px solid #d7a0a0; }
.change-badge.renumbered         { background: #ecf6ff; color: #1f4d76; border: 1px solid #8fb9d9; }
.change-badge.renumbered-modified { background: #f5edff; color: #4b1d7a; border: 1px solid #c4a0d9; }

.version-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.removed-text {
  opacity: 0.72;
  text-decoration: line-through;
  text-decoration-color: #d7a0a0;
}

/* Collapsed renumber group */
.renumber-group {
  border: none;
  background: transparent;
  padding: 0;
  margin: 3px 0;
}
.renumber-group > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-radius: 8px;
  border: 1px dashed #8fb9d9;
  color: #1f4d76;
  font-size: 0.84rem;
  user-select: none;
  transition: background 0.15s;
  background: #f4f9ff;
}
.renumber-group > summary::-webkit-details-marker { display: none; }
.renumber-group > summary::marker { display: none; }
.renumber-group > summary:hover { background: #e6f1fb; }
.renumber-group[open] > summary .expand-chevron { transform: rotate(90deg); }

/* Added group — same layout as renumber-group but green */
.added-group > summary {
  border-color: #7cbf93;
  color: #0f5132;
  background: #f0faf3;
}
.added-group > summary:hover { background: #ddf3e4; }
.added-group .doc-renumber-row {
  grid-template-columns: 7ch 1fr;
  grid-template-areas: 'num text';
}
.added-group .doc-renumber-row .doc-rule-num { grid-area: num; }
.added-group .doc-renumber-row .renumber-text { grid-area: text; white-space: normal; word-break: break-word; }
.renumber-rules-list {
  border-left: 2px solid #8fb9d9;
  margin-left: 18px;
  padding: 4px 0;
}
.doc-renumber-row {
  display: grid;
  grid-template-columns: 7ch auto auto 1fr;
  gap: 6px;
  align-items: baseline;
  padding: 3px 12px;
  font-size: 0.87rem;
  line-height: 1.5;
}
.renumber-row-text {
  color: var(--muted);
  white-space: normal;
  overflow: visible;
  word-break: break-word;
}
.renumber-refs-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 1px 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  background: #ecf6ff;
  color: #1f4d76;
  border: 1px solid #8fb9d9;
  white-space: nowrap;
  flex-shrink: 0;
}