.hall-info-accordion {
  margin: 0 0 16px;
  border: 1px solid var(--color-border-light);
  border-radius: 14px;
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.hall-info-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 900;
  color: var(--color-text-primary);
}

.hall-info-accordion summary::-webkit-details-marker {
  display: none;
}

.hall-info-accordion summary::after {
  content: '펼치기';
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 900;
  white-space: nowrap;
}

.hall-info-accordion[open] summary::after {
  content: '접기';
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.hall-info-accordion summary small {
  margin-left: auto;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-muted);
}

.hall-info-accordion__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--color-border-light);
}

.hall-info-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  padding-top: 14px;
}

.hall-info-stats div {
  padding: 12px 10px;
  border-radius: 8px;
  background: var(--color-surface-2);
  text-align: center;
}

.hall-info-stats b {
  display: block;
  font-size: 18px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}

.hall-info-stats span {
  display: block;
  margin-top: 5px;
  font-size: 11px;
  font-weight: 800;
  color: var(--color-text-muted);
}

.hall-info-rule-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.hall-info-rule {
  padding: 12px;
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  background: var(--color-surface);
}

.hall-info-rule b {
  display: block;
  font-size: 12px;
  font-weight: 900;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.hall-info-rule p {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--color-text-secondary);
}

@media (max-width: 640px) {
  .hall-info-accordion summary {
    padding: 13px 14px;
  }

  .hall-info-accordion summary small {
    display: none;
  }

  .hall-info-stats,
  .hall-info-rule-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 420px) {
  .hall-info-stats,
  .hall-info-rule-grid {
    grid-template-columns: 1fr;
  }
}