/* 深淵書架 相関星図 ── 展開オーバーレイ(ISSUE-K04)
   デザイントークンは shinen-tokens.css を正とする(2026-07: 意匠刷新)。 */
/* バグ修正(2026-07-24 ユーザー報告): JIN:R親テーマの #commonHeader が
   position:fixed; z-index:9999 のため、従来のz-index:1000ではオーバーレイの
   バー(戻る/閉じる/背景切替ボタン)がヘッダーの下に隠れてクリックできなかった。
   サイトヘッダーより確実に手前へ出るよう10500に引き上げる。 */
.shn-kinship-overlay {
  position: fixed;
  inset: 0;
  background: #06080c;
  z-index: 10500;
  display: none;
  flex-direction: column;
  color: var(--shn-bone);
  font-family: var(--shn-font-body);
}
.shn-kinship-overlay * { box-sizing: border-box; }
.shn-kinship-overlay.is-open { display: flex; }

.shn-kinship-overlay-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--shn-hairline);
  flex-wrap: wrap;
  position: relative;
  z-index: 5;
  background: rgba(6, 8, 12, .7);
  backdrop-filter: blur(4px);
}
.shn-kinship-overlay-title { font-family: var(--shn-font-display); font-size: 15px; letter-spacing: .14em; }
.shn-kinship-overlay-close,
.shn-kinship-overlay-theme,
.shn-kinship-overlay-back {
  background: none;
  border: 1px solid var(--shn-gold-dim);
  color: var(--shn-gold);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: .12em;
  padding: 6px 13px;
  cursor: pointer;
  font-family: inherit;
}
.shn-kinship-overlay-close:hover,
.shn-kinship-overlay-theme:hover,
.shn-kinship-overlay-back:hover { background: var(--shn-gold); color: var(--shn-abyss); }

.shn-kinship-overlay-toggles { display: flex; gap: 5px; flex-wrap: wrap; }
.shn-kinship-overlay-toggles button {
  font-family: var(--shn-font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  padding: 4px 9px;
  border-radius: 2px;
  cursor: pointer;
  background: none;
  border: 1px solid rgba(232, 227, 213, .25);
  color: var(--shn-bone-dim);
  transition: .15s;
}
.shn-kinship-overlay-toggles button.is-on { border-color: var(--shn-gold); color: var(--shn-gold); }

.shn-kinship-overlay-stage { position: relative; flex: 1; overflow: hidden; }
.shn-kinship-overlay-bg { position: absolute; inset: 0; width: 100%; height: 100%; }
.shn-kinship-overlay-map { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; }

.shn-kinship-overlay-legend {
  position: absolute;
  bottom: 14px;
  left: 14px;
  font-size: 10.5px;
  color: var(--shn-bone-dim);
  background: rgba(11, 13, 18, .82);
  border: 1px solid var(--shn-hairline);
  box-shadow: var(--shn-glow-gold);
  border-radius: 3px;
  padding: 9px 13px;
  line-height: 2;
  pointer-events: none;
  z-index: 4;
}
.shn-kinship-overlay-legend .shn-sw { display: inline-block; width: 22px; height: 0; border-top-width: 2px; margin-right: 8px; vertical-align: middle; }
.shn-sw-glow {
  width: 22px; height: 2px; border-top: none !important;
  background: var(--shn-gold);
  box-shadow: 0 0 5px 1.5px var(--shn-gold), 0 0 2px var(--shn-gold);
}

.shn-kinship-overlay-faction-legend {
  position: absolute;
  bottom: 14px;
  right: 14px;
  font-size: 10.5px;
  color: var(--shn-bone-dim);
  background: rgba(11, 13, 18, .82);
  border: 1px solid var(--shn-hairline);
  box-shadow: var(--shn-glow-gold);
  border-radius: 3px;
  padding: 9px 13px;
  line-height: 2;
  pointer-events: none;
  z-index: 4;
  max-width: 220px;
}
.shn-kinship-overlay-faction-legend .shn-sw-dot {
  display: inline-block; width: 11px; height: 11px; border-radius: 50%;
  margin-right: 8px; vertical-align: middle;
}
.shn-kinship-faction-note {
  font-size: 9px;
  line-height: 1.5;
  opacity: .7;
  margin-top: 4px;
  white-space: normal;
}

/* 2026-07-24追加: 四大元素説(火水地風)のVenn図風範囲表示の凡例。全系譜表示時のみ表示。 */
.shn-kinship-overlay-element-legend {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 10.5px;
  color: var(--shn-bone-dim);
  background: rgba(11, 13, 18, .82);
  border: 1px solid var(--shn-hairline);
  box-shadow: var(--shn-glow-gold);
  border-radius: 3px;
  padding: 9px 13px;
  line-height: 2;
  pointer-events: none;
  z-index: 4;
  max-width: 220px;
}
.shn-kinship-overlay-element-legend .shn-sw-dot {
  display: inline-block; width: 11px; height: 11px; border-radius: 50%;
  margin-right: 8px; vertical-align: middle;
}
.shn-kinship-element-note {
  font-size: 9px;
  line-height: 1.5;
  opacity: .7;
  margin-top: 4px;
  white-space: normal;
}

@media (max-width: 700px) {
  .shn-kinship-overlay-legend, .shn-kinship-overlay-faction-legend, .shn-kinship-overlay-element-legend { font-size: 9.5px; padding: 7px 10px; }
  .shn-kinship-overlay-faction-legend, .shn-kinship-overlay-element-legend { max-width: 160px; }
}

@media (prefers-reduced-motion: reduce) {
  .shn-kinship-overlay * { transition: none !important; animation: none !important; }
}