.rules-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 5vw, 4.5rem) 0 clamp(1.75rem, 3vw, 2.5rem);
}

.rules-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(46, 196, 255, 0.18), transparent 28%),
    radial-gradient(circle at left center, rgba(212, 175, 55, 0.12), transparent 30%);
  pointer-events: none;
}

.rules-hero__grid,
.rules-layout,
.rules-stack,
.rules-card-list,
.rules-admin-list,
.rules-admin-history,
.rules-changelog__list {
  display: grid;
  gap: var(--space-4);
}

.rules-hero__grid {
  position: relative;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.85fr);
  align-items: start;
}

.rules-hero__copy h1,
.rules-group__head h2,
.rules-card__head h3,
.rules-admin-hero h1 {
  margin: 0;
  font-family: var(--font-heading);
}

.rules-hero__copy h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-bottom: var(--space-3);
}

.rules-hero__lead,
.rules-admin-hero p,
.rules-card__head p,
.rules-summary-card p,
.rules-changelog__entry p,
.rules-empty p {
  margin: 0;
  color: var(--color-text-muted);
}

.rules-hero__meta,
.rules-card__badges,
.rules-card__tags,
.rules-group__meta,
.rules-admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.rules-summary-card,
.rules-filter,
.rules-outline,
.rules-changelog,
.rules-group,
.rules-empty,
.rules-admin-hero,
.rules-admin-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    var(--color-bg-elevated);
  box-shadow: var(--shadow-md);
}

.rules-summary-card,
.rules-empty,
.rules-admin-hero {
  padding: clamp(1rem, 2vw, 1.4rem);
}

.rules-summary-card {
  display: grid;
  gap: var(--space-2);
}

.rules-summary-card--accent {
  border-color: rgba(46, 196, 255, 0.34);
  box-shadow: var(--shadow-glow-primary);
}

.rules-summary-card__label,
.rules-group__eyebrow,
.rules-outline__title {
  color: var(--color-text-subtle);
  font-size: var(--fs-300);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rules-summary-card strong {
  font-size: var(--fs-700);
}

.rules-layout {
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  align-items: start;
}

.rules-sidebar {
  display: grid;
  gap: var(--space-4);
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-4));
}

.rules-filter,
.rules-outline,
.rules-changelog,
.rules-group {
  padding: var(--space-4);
}

.rules-filter__actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.rules-outline a {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: center;
  padding: 0.8rem 0.95rem;
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid transparent;
  transition: var(--transition-fast);
}

.rules-outline a:hover,
.rules-admin-card summary:hover {
  border-color: rgba(46, 196, 255, 0.34);
  background: rgba(46, 196, 255, 0.08);
}

.rules-outline strong {
  color: var(--color-primary);
}

.rules-changelog__entry {
  display: grid;
  gap: 0.25rem;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 17, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.rules-changelog__entry a {
  color: var(--color-text);
  text-decoration: none;
}

.rules-changelog__entry small,
.rules-card__footer small,
.rules-admin-card__meta small {
  color: var(--color-text-subtle);
}

.admin-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text);
  font-size: var(--fs-300);
}

.admin-warning {
  color: var(--color-warning);
  background: var(--color-amber-soft);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-sm, 8px);
  padding: var(--space-2) var(--space-3);
  margin: 0;
  font-size: var(--fs-300);
}

.rules-group {
  display: grid;
  gap: var(--space-4);
}

.rules-group__head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: end;
  flex-wrap: wrap;
}

.rules-group__meta {
  color: var(--color-text-subtle);
  font-size: var(--fs-300);
}

.rules-card {
  display: grid;
  gap: var(--space-4);
  padding: clamp(1rem, 2vw, 1.4rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.02)),
    rgba(14, 17, 22, 0.84);
}

.rules-card--highlight {
  border-color: rgba(212, 175, 55, 0.34);
  box-shadow: var(--shadow-glow-gold);
}

.rules-card__top,
.rules-admin-card__summary,
.rules-card__footer,
.rules-admin-hero {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: flex-start;
  flex-wrap: wrap;
}

.rules-card__number {
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
}

.rules-card__head {
  display: grid;
  gap: var(--space-2);
}

.rules-copy,
.rules-example p {
  margin: 0;
  color: var(--color-text);
  white-space: pre-line;
}

.rules-example {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(46, 196, 255, 0.06);
  border: 1px solid rgba(46, 196, 255, 0.18);
}

.rules-example strong {
  color: var(--color-primary);
}

.rules-admin-page {
  gap: var(--space-6);
}

.rules-admin-hero {
  align-items: end;
}

.rules-admin-hero__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: var(--space-3);
  width: min(560px, 100%);
}

.rules-admin-card {
  overflow: hidden;
}

.rules-admin-card summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-4);
  transition: var(--transition-fast);
}

.rules-admin-card summary::-webkit-details-marker {
  display: none;
}

.rules-admin-card[open] summary {
  border-bottom: 1px solid var(--color-border);
}

.rules-admin-card__summary {
  width: 100%;
}

.rules-admin-card__summary h3 {
  margin: var(--space-2) 0;
}

.rules-admin-card__summary p {
  margin: 0;
  color: var(--color-text-muted);
}

.rules-admin-card__meta {
  display: grid;
  gap: 0.2rem;
  text-align: right;
}

.rules-admin-card__form,
.rules-admin-history {
  padding: var(--space-4);
}

.rules-admin-history {
  border-top: 1px solid var(--color-border);
}

@media (max-width: 1080px) {
  .rules-hero__grid,
  .rules-layout {
    grid-template-columns: 1fr;
  }

  .rules-sidebar {
    position: static;
  }
}

@media (max-width: 820px) {
  .rules-admin-hero__stats {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }
}

@media (max-width: 720px) {
  .rules-admin-card__meta {
    text-align: left;
  }

  .rules-filter__actions .btn,
  .rules-admin-actions .btn {
    width: 100%;
  }
}