/* ======================================
   map3d.css - 校舎3Dマップ（map3d.html 専用）
   すべて #m3d 配下 / .m3d- プレフィックスにスコープし、
   既存コンポーネントと衝突しないようにしている。
====================================== */

#m3d {
  /* フロア1枚のサイズと層間隔（ここを変えると全体が追従） */
  --floor-w: 620px;
  --floor-h: 440px;
  --gap: 62px;

  /* 吹き抜けの矩形（フロア面に対する比率） */
  --void-l: 0.38;
  --void-t: 0.42;
  --void-w-r: 0.28;
  --void-h-r: 0.18;

  --void-x: calc(var(--floor-w) * var(--void-l));
  --void-y: calc(var(--floor-h) * var(--void-t));
  --void-w: calc(var(--floor-w) * var(--void-w-r));
  --void-h: calc(var(--floor-h) * var(--void-h-r));

  display: flex;
  gap: 20px;
  align-items: flex-start;
}

/* ---------- コントロールパネル ---------- */
.m3d-controls {
  width: 220px;
  flex-shrink: 0;
  background: rgba(31, 31, 31, 0.82);
  backdrop-filter: blur(6px);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 13px;
  position: relative;
  z-index: 5;
}

.m3d-controls h3 {
  font-size: 0.72rem;
  color: var(--color-text-sub);
  letter-spacing: 0.1em;
  font-weight: 500;
}

.m3d-floor-btns {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}

.m3d-floor-btns button,
.m3d-unfocus {
  background: var(--color-surface-light);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 7px 0;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.m3d-floor-btns button:hover,
.m3d-unfocus:hover {
  background: var(--color-primary);
  border-color: var(--color-primary-light);
}

.m3d-unfocus {
  visibility: hidden;
  margin-top: 6px;
  width: 100%;
  font-size: 0.78rem;
  font-weight: 500;
}

/* 注目中の階の企画一覧へのリンク（フロア注目中のみ表示） */
.m3d-focus-programs {
  display: block;
  margin-top: 6px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 6px;
  padding: 9px 0;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.m3d-focus-programs:hover { background: var(--color-primary-light); }

.m3d-focus-programs[hidden] { display: none; }

.m3d-slider-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.74rem;
  color: var(--color-text-sub);
}

.m3d-slider-row input {
  width: 100%;
  accent-color: var(--color-primary);
}

.m3d-check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  cursor: pointer;
}

.m3d-check-row input { accent-color: var(--color-primary); }

.m3d-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.74rem;
  color: var(--color-text-sub);
  list-style: none;
  margin: 0;
  padding: 0;
}

.m3d-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.m3d-chip {
  width: 14px;
  height: 4px;
  border-radius: 2px;
  flex-shrink: 0;
}

.m3d-chip.up { background: var(--color-primary); box-shadow: 0 0 6px var(--color-primary); }
.m3d-chip.down { background: #38BDF8; box-shadow: 0 0 6px #38BDF8; }
.m3d-chip.ev { background: var(--color-accent); box-shadow: 0 0 6px var(--color-accent); }
.m3d-chip.void { background: none; border-top: 2px dashed rgba(239, 68, 68, 0.7); height: 0; }
.m3d-chip.poi { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, 0.92); box-shadow: 0 0 6px rgba(255, 255, 255, 0.7); }

/* ---------- 詳細設定の折りたたみ（モバイルではJSが閉じて開始） ---------- */
.m3d-adv {
  border-top: 1px solid var(--color-border);
  padding-top: 10px;
}

.m3d-adv summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 0.72rem;
  color: var(--color-text-sub);
  letter-spacing: 0.1em;
  font-weight: 500;
  list-style: none;
  user-select: none;
  -webkit-user-select: none;
}

.m3d-adv summary::-webkit-details-marker { display: none; }

.m3d-adv summary::after {
  content: '▾';
  transition: transform 0.2s;
}

.m3d-adv[open] summary::after { transform: rotate(180deg); }

.m3d-adv-body {
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-top: 12px;
}

.m3d-note {
  font-size: 0.7rem;
  color: var(--color-text-sub);
  line-height: 1.6;
  border-top: 1px solid var(--color-border);
  padding-top: 10px;
}

.m3d-note b.up { color: var(--color-primary-light); }
.m3d-note b.down { color: #38BDF8; }

/* ---------- 3Dシーン ---------- */
.m3d-scene {
  flex: 1;
  height: min(74vh, 780px);
  min-height: 520px;
  perspective: 1900px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.m3d-scene.is-dragging { cursor: grabbing; }

.m3d-stack {
  position: relative;
  width: var(--floor-w);
  height: var(--floor-h);
  transform-style: preserve-3d;
  /* 層が上に積み上がるぶん、全体を下げて画面中央に収める */
  transform: translateY(calc(var(--gap) * 4.2)) rotateX(var(--tilt, 62deg)) rotateZ(var(--spin, -38deg));
}

/* ---------- 地面グリッド ---------- */
.m3d-ground {
  position: absolute;
  inset: -34%;
  transform: translateZ(-14px);
  background-image:
    radial-gradient(ellipse at center, rgba(220, 38, 38, 0.13), transparent 62%),
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 100% 100%, 38px 38px, 38px 38px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 34%, transparent 74%);
  mask-image: radial-gradient(ellipse at center, #000 34%, transparent 74%);
  pointer-events: none;
}

/* ---------- フロア1枚 ---------- */
.m3d-floor {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transform: translateZ(calc(var(--gap) * var(--i)));
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s;
  cursor: pointer;
}

/* 注目中のフロアの縁取り */
.m3d-floor.f-focus::after {
  content: '';
  position: absolute;
  inset: -6px;
  border: 1.5px solid rgba(239, 68, 68, 0.55);
  border-radius: 10px;
  box-shadow: 0 0 26px rgba(220, 38, 38, 0.22);
  pointer-events: none;
}

/* フロアフォーカス: 選んだ階の上を持ち上げて透かす。
   ※ 半透明はフロア本体ではなく子要素にかける。preserve-3d の要素は
     WebKit系（iPhoneの全ブラウザ）が opacity を無視することがあり、
     フロア本体にかけると「前に選んだ階が透けずに残る」バグになる */
.m3d-floor > * { transition: opacity 0.35s; }

.m3d-stack.focused .m3d-floor.f-above {
  pointer-events: none;
  transform: translateZ(calc(var(--gap) * var(--i) + 120px));
}

.m3d-stack.focused .m3d-floor.f-above > * { opacity: 0.07; }

.m3d-stack.focused .m3d-floor.f-below > * { opacity: 0.35; }

/* 背景透明化した図面（直下のimgのみ。POIのアイコンには適用しない） */
.m3d-floor > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
  filter: url(#m3d-chroma-key);
}

#m3d.is-glow .m3d-floor > img {
  filter: url(#m3d-chroma-key) drop-shadow(0 0 5px rgba(220, 38, 38, 0.45));
}

/* ホバー演出はマウス環境のみ。タッチ端末では :hover が
   最後にタップした階に貼り付いたままになり、強調表示が残ってしまう */
@media (hover: hover) {
  .m3d-floor:hover { transform: translateZ(calc(var(--gap) * var(--i) + 12px)); }

  .m3d-floor:hover::after {
    content: '';
    position: absolute;
    inset: -6px;
    border: 1.5px solid rgba(239, 68, 68, 0.55);
    border-radius: 10px;
    box-shadow: 0 0 26px rgba(220, 38, 38, 0.22);
    pointer-events: none;
  }

  .m3d-floor:hover > img {
    filter: url(#m3d-chroma-key) drop-shadow(0 0 4px rgba(255, 255, 255, 0.5)) brightness(1.25);
  }

  .m3d-floor:hover .m3d-tag {
    border-color: var(--color-primary-light);
    color: var(--color-primary-light);
  }
}

/* 床: 建物がある部分（FLOORSのplates矩形）にだけ敷く半透明パネル。外は透明 */
.m3d-plates {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.m3d-plate {
  position: absolute;
  background: linear-gradient(145deg, rgba(36, 40, 52, 0.72), rgba(15, 17, 23, 0.64));
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 3px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.3);
}

#m3d.no-plate .m3d-plates { opacity: 0; }

/* 吹き抜け: マスクで矩形をくり抜く（図面のX印ごと消して本当の穴にする） */
.m3d-floor.has-void > img,
.m3d-floor.has-void .m3d-plates {
  -webkit-mask-image: linear-gradient(#000 0 0), linear-gradient(#000 0 0);
  -webkit-mask-size: 100% 100%, var(--void-w) var(--void-h);
  -webkit-mask-position: 0 0, var(--void-x) var(--void-y);
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-composite: xor;
  mask-image: linear-gradient(#000 0 0), linear-gradient(#000 0 0);
  mask-size: 100% 100%, var(--void-w) var(--void-h);
  mask-position: 0 0, var(--void-x) var(--void-y);
  mask-repeat: no-repeat;
  mask-composite: exclude;
}

/* 吹き抜けの縁取り */
.m3d-void-ring {
  position: absolute;
  left: var(--void-x);
  top: var(--void-y);
  width: var(--void-w);
  height: var(--void-h);
  border: 1.5px dashed rgba(239, 68, 68, 0.5);
  border-radius: 4px;
  pointer-events: none;
}

/* B1 = 吹き抜けの底（地下ホール） */
.m3d-floor.void-bottom .m3d-void-ring {
  background: rgba(220, 38, 38, 0.13);
  border-style: solid;
  border-color: rgba(239, 68, 68, 0.45);
  box-shadow: 0 0 26px rgba(220, 38, 38, 0.3) inset;
}

/* 接続ポイントのドット */
.m3d-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* フロア名タグ（ビルボード: 常にカメラ正面） */
.m3d-tag {
  position: absolute;
  left: -10px;
  top: 50%;
  transform:
    translate(-100%, -50%)
    rotateZ(calc(var(--spin, -38deg) * -1))
    rotateX(calc(var(--tilt, 62deg) * -1));
  background: rgba(31, 31, 31, 0.9);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 2px 9px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  pointer-events: none;
  white-space: nowrap;
}


/* ---------- POIピン（教室名・企画アイコン。常にカメラ正面を向く） ---------- */
.m3d-poi {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 6px;
  /* ビルボード化してから、アンカー点の少し上に浮かせる */
  transform:
    rotateZ(calc(var(--spin, -38deg) * -1))
    rotateX(calc(var(--tilt, 62deg) * -1))
    translate(-50%, calc(-100% - 14px));
  background: rgba(20, 20, 25, 0.93);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  padding: 3px 11px 3px 4px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.55);
  transition: opacity 0.25s, border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* アンカー点への引き出し線 */
.m3d-poi::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 100%;
  width: 1.5px;
  height: 13px;
  background: linear-gradient(rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.1));
}

.m3d-poi img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: #333;
}

.m3d-poi.text-only { padding-left: 11px; }

/* 1本おきに引き出し線を長くして、隣接ラベルの重なりを防ぐ */
.m3d-poi.alt {
  transform:
    rotateZ(calc(var(--spin, -38deg) * -1))
    rotateX(calc(var(--tilt, 62deg) * -1))
    translate(-50%, calc(-100% - 36px));
}

.m3d-poi.alt::after { height: 35px; }

.m3d-poi:hover {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 16px rgba(220, 38, 38, 0.55);
  z-index: 10;
}

/* 他の階に注目中はピンを消す（混雑防止） */
.m3d-stack.focused .m3d-floor:not(.f-focus) .m3d-poi {
  opacity: 0;
  pointer-events: none;
}

/* 全体表示中は小さなドットで教室位置だけ示す（全教室分のラベルが重ならないように）。
   フロアにホバー / 注目すると教室名ピンに展開する */
.m3d-stack:not(.focused) .m3d-floor:not(:hover) .m3d-poi {
  padding: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 0 7px rgba(255, 255, 255, 0.65);
  transform: translate(-50%, -50%);
}

.m3d-stack:not(.focused) .m3d-floor:not(:hover) .m3d-poi > *,
.m3d-stack:not(.focused) .m3d-floor:not(:hover) .m3d-poi::after {
  display: none;
}

/* タッチ端末では :hover が最後にタップした階に貼り付くため、
   ホバーによるピン展開を無効化し常にドットのまま保つ（展開はフロア注目時のみ） */
@media (hover: none) {
  .m3d-stack:not(.focused) .m3d-floor:hover .m3d-poi {
    padding: 0;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 7px rgba(255, 255, 255, 0.65);
    transform: translate(-50%, -50%);
  }

  .m3d-stack:not(.focused) .m3d-floor:hover .m3d-poi > *,
  .m3d-stack:not(.focused) .m3d-floor:hover .m3d-poi::after {
    display: none;
  }
}

/* ---------- 縦の接続柱（階段・EV・吹き抜けエッジ） ---------- */
.m3d-pillars {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  pointer-events: none;
}

.m3d-pillar {
  position: absolute;
  width: 3px;
  margin-left: -1.5px;
  height: calc(var(--gap) * var(--span));
  transform-origin: top center;
  border-radius: 2px;
  /* フロアの層ごとに目盛りが入るグラデーション */
  background-image: repeating-linear-gradient(
    to bottom,
    var(--c) 0,
    var(--c) calc(var(--gap) - 6px),
    rgba(255, 255, 255, 0.95) calc(var(--gap) - 6px),
    rgba(255, 255, 255, 0.95) var(--gap)
  );
  box-shadow: 0 0 10px var(--c), 0 0 26px color-mix(in srgb, var(--c) 45%, transparent);
  opacity: 0.95;
}

.m3d-pillar.void-edge {
  width: 0;
  margin-left: 0;
  background: none;
  box-shadow: none;
  border-left: 2px dashed rgba(239, 68, 68, 0.48);
  opacity: 1;
}

/* ---------- 方角の目印（校庭 ⇔ 東京タワー） ---------- */
/* ビルボードの方角ラベル（常にカメラ正面・地面すれすれに置く） */
.m3d-dir-label {
  position: absolute;
  transform:
    rotateZ(calc(var(--spin, -38deg) * -1))
    rotateX(calc(var(--tilt, 62deg) * -1))
    translate(-50%, calc(-100% - 10px));
  background: rgba(20, 20, 25, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 4px 13px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-main);
  white-space: nowrap;
  pointer-events: none;
}

/* 東京タワー側（図面の上側・校庭の反対） */
.m3d-dir-tower {
  left: 55%;
  top: -14%;
  border-color: rgba(251, 146, 60, 0.55);
  color: #fdba74;
}

/* 校庭側（図面の下側） */
.m3d-dir-koutei {
  left: 55%;
  top: 114%;
}

/* ---------- 座標読み取り（?debug=1 のときだけ生成） ---------- */
.m3d-coord {
  position: fixed;
  right: 16px;
  bottom: 12px;
  font-size: 0.72rem;
  color: var(--color-text-sub);
  background: rgba(31, 31, 31, 0.85);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  z-index: 50;
}

/* ---------- 平面ビューア ---------- */
.m3d-viewer {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  z-index: 1000;
  padding: 24px;
}

.m3d-viewer[hidden] { display: none; }

.m3d-viewer img {
  max-width: min(92vw, 1100px);
  max-height: 74vh;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
}

.m3d-viewer-bar {
  display: flex;
  align-items: center;
  gap: 14px;
}

.m3d-viewer-bar .m3d-vtitle {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  min-width: 3em;
  text-align: center;
}

.m3d-viewer-bar button,
.m3d-viewer .m3d-vclose {
  background: var(--color-surface);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.m3d-viewer-bar button:hover,
.m3d-viewer .m3d-vclose:hover { background: var(--color-primary); }

/* その階の企画一覧への深いリンク */
.m3d-v-programs {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  border-radius: 999px;
  padding: 11px 26px;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.m3d-v-programs:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.m3d-viewer .m3d-vclose {
  position: absolute;
  top: 18px;
  right: 22px;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 900px) {
  #m3d {
    /* 画面幅いっぱいに使う（縦横比はデスクトップと同じ 440/620 ≒ 0.71） */
    --floor-w: min(88vw, 380px);
    --floor-h: calc(min(88vw, 380px) * 0.71);
    --gap: 42px;
    flex-direction: column-reverse;
    gap: 12px;
  }

  .m3d-controls {
    width: 100%;
    padding: 12px;
  }

  /* フロアボタンは親指で押しやすい横スクロール列に */
  .m3d-floor-btns {
    display: flex;
    overflow-x: auto;
    gap: 6px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .m3d-floor-btns::-webkit-scrollbar { display: none; }

  .m3d-floor-btns button {
    flex: 0 0 auto;
    min-width: 52px;
    min-height: 42px;
    font-size: 0.9rem;
  }

  .m3d-unfocus {
    padding: 10px 0;
    font-size: 0.85rem;
  }

  .m3d-scene {
    min-height: 420px;
    height: min(60vh, 540px);
    width: 100%;
    /* 縦スワイプはページスクロールに逃がす（回転は横ドラッグ、傾きはスライダー） */
    touch-action: pan-y;
  }

  /* 小さい画面ではピンの文字を少し大きく */
  .m3d-poi { font-size: 0.74rem; }

  /* 平面ビューアをタップしやすく */
  .m3d-viewer { padding: 12px; gap: 10px; }

  .m3d-viewer img {
    max-width: 96vw;
    max-height: 66vh;
  }

  .m3d-viewer-bar {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }

  .m3d-viewer-bar button {
    padding: 12px 14px;
    font-size: 0.9rem;
  }

  .m3d-viewer .m3d-vclose {
    top: 10px;
    right: 12px;
    padding: 10px 16px;
  }
}