/* =========================================================
   BAKI BAKI 画像 3D — 立体ガラス割れ加工（Three.js）
   ダークモード × エメラルドグリーン
   ========================================================= */
:root{
  --bg:#08130f; --grid:rgba(120,235,200,.05);
  --panel:#11201a; --panel-2:#172a22; --line:#284034; --line-soft:#1e3329;
  --ink:#e8f4ee; --ink-dim:#92b3a5;
  --accent:#14c79a; --accent-deep:#0c9a76; --accent-ink:#4fe3b8;
  --glow:rgba(20,199,154,.4); --shadow:0 22px 46px -26px rgba(0,0,0,.75);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:
    radial-gradient(1100px 640px at 72% -12%, rgba(20,199,154,.16), transparent 60%),
    radial-gradient(820px 560px at -8% 112%, rgba(30,170,180,.12), transparent 55%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--bg);
  background-size:auto,auto,44px 44px,44px 44px,auto;
  color:var(--ink); font-family:"Zen Kaku Gothic New",sans-serif; min-height:100vh; overflow-x:hidden;
}
.wrap{position:relative;z-index:1;max-width:1280px;margin:0 auto;padding:28px 22px 70px}

header{display:flex;align-items:flex-end;justify-content:space-between;gap:14px 20px;flex-wrap:wrap;margin-bottom:22px}
.brand{flex:1 1 auto;min-width:0}   /* 2D版と同じ：伸びて右側（2D版ボタン＋ヒント）を端へ */
.brand h1{font-family:"Orbitron","Zen Kaku Gothic New",sans-serif;font-weight:800;letter-spacing:.01em;
  font-size:clamp(24px,4.4vw,42px);line-height:1;color:var(--accent);
  text-shadow:0 2px 22px rgba(20,199,154,.4);display:flex;align-items:center;gap:.34em}
/* 和文「合成」：等幅サイズ＋やや上へ微調整（中央そろえだと少し下に見えるため） */
.brand h1 .jp{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;color:var(--ink);
  font-size:1.08em;line-height:1;transform:translateY(-0.06em)}
/* 2D⇄3D 相互リンク */
.xlink{flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;
  text-decoration:none;color:#06241b;background:var(--accent);border:1px solid var(--accent);
  padding:9px 15px;border-radius:999px;box-shadow:0 8px 18px -8px rgba(20,199,154,.6);transition:.15s}
.xlink .ico{width:16px;height:16px}
.xlink:hover{filter:brightness(1.08);transform:translateY(-1px)}
.stage-tag{margin-bottom:10px}
.brand .sub{margin-top:9px;color:var(--ink-dim);font-size:13px;letter-spacing:.02em}
.brand .sub b{color:var(--accent-ink);font-weight:600}
.tag{font-family:"DM Mono",monospace;font-size:11px;color:var(--ink-dim);border:1px solid var(--line);
  padding:6px 10px;border-radius:6px;background:var(--panel);white-space:nowrap;box-shadow:var(--shadow);
  display:inline-flex;align-items:center;gap:7px}
.tag .ico{width:14px;height:14px;color:var(--accent)}

.layout{display:grid;grid-template-columns:1fr 320px;gap:18px;align-items:start}
@media(max-width:880px){.layout{grid-template-columns:1fr}}
/* 画面の高さが十分にあるときだけプレビューを追従（スティッキー）。低いとボタンが隠れるので通常スクロールにする */
@media(min-width:881px) and (min-height:950px){.stage-col{position:sticky;top:18px;align-self:start;
  max-height:calc(100vh - 36px);overflow-y:auto;overflow-x:hidden;scrollbar-width:thin}}
.stage-col::-webkit-scrollbar{width:7px}
.stage-col::-webkit-scrollbar-thumb{background:var(--line);border-radius:7px}

/* ---------- stage (WebGL) ---------- */
.stage{position:relative;border:1px solid var(--line);border-radius:12px;overflow:hidden;
  background:
    linear-gradient(#0b1813,#0b1813) padding-box,
    repeating-conic-gradient(#0e1f18 0% 25%, #13271e 0% 50%) 0/26px 26px;
  min-height:300px;display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 0 1px rgba(20,199,154,.08), var(--shadow)}
#gl{display:block;width:100%;height:auto;cursor:crosshair;touch-action:none}
/* 鑑賞モードのフルスクリーン案内（数秒だけふわっと表示） */
.ambient-hint{position:absolute;left:50%;bottom:16px;transform:translateX(-50%) translateY(6px);
  display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;z-index:5;
  background:rgba(6,18,13,.78);border:1px solid rgba(20,199,154,.45);color:#dffdf2;
  font-size:12.5px;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .35s,transform .35s}
.ambient-hint.show{opacity:1;transform:translateX(-50%) translateY(0)}
.ambient-hint kbd{font-family:"DM Mono",monospace;font-weight:600;background:var(--accent);color:#06241b;
  padding:1px 7px;border-radius:5px;font-size:12px}
/* フルスクリーン時：枠を消して中央に表示（キャンバスサイズはJSが画面に合わせる） */
.stage:fullscreen{border:0;border-radius:0;background:#05100c}
.stage:-webkit-full-screen{border:0;border-radius:0;background:#05100c}
.stage:fullscreen #gl{cursor:default}
.drop-hint{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;color:var(--ink-dim);text-align:center;padding:20px;pointer-events:none;transition:.2s;z-index:2}
.drop-hint .ic{width:44px;height:44px;color:var(--accent);opacity:.9}
.drop-hint b{color:var(--ink);font-weight:600}
.stage.drag{outline:2px dashed var(--accent);outline-offset:-8px}
.stage.editing{outline:2px solid var(--accent);outline-offset:-2px;box-shadow:inset 0 0 0 1px var(--accent),0 0 0 0 transparent}

/* ---------- panel ---------- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 16px 18px;box-shadow:var(--shadow)}
.panel h2{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-ink);
  font-family:"DM Mono",monospace;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel h2::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%;box-shadow:0 0 10px var(--glow)}
.panel h3.grp{font-family:"DM Mono",monospace;font-size:10.5px;letter-spacing:.16em;color:var(--accent-ink);
  margin:6px 0 12px;padding-top:14px;border-top:1px solid var(--line-soft)}

.ctrl{margin-bottom:16px}
.ctrl .row{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:7px}
.ctrl label{font-size:13px;color:var(--ink)}
.ctrl .val{font-family:"DM Mono",monospace;font-size:12px;color:var(--accent-ink);background:rgba(20,199,154,.10);
  border:1px solid var(--line);padding:1px 7px;border-radius:5px;min-width:46px;text-align:center}
.ctrl .rgt{display:flex;align-items:center;gap:7px;flex:none}

/* マテリアル切替（セグメント） */
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.seg.seg4{grid-template-columns:repeat(4,1fr)}
.seg-btn{appearance:none;-webkit-appearance:none;border:1px solid var(--line);background:var(--panel-2);color:var(--ink-dim);
  border-radius:9px;padding:9px 4px;cursor:pointer;transition:.15s;font-size:13px;font-weight:600;font-family:inherit}
.seg.seg4 .seg-btn{font-size:12px;padding:9px 2px}
.seg-btn:hover{border-color:var(--accent);color:var(--accent-ink)}
.seg-btn.on{background:var(--accent);border-color:var(--accent);color:#06241b;box-shadow:0 6px 14px -6px rgba(20,199,154,.6)}

/* パラメーターのロック */
.lock{appearance:none;-webkit-appearance:none;border:1px solid var(--line);background:var(--panel-2);color:var(--ink-dim);
  width:24px;height:24px;border-radius:7px;padding:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:.15s;flex:none}
.lock svg{width:13px;height:13px}
.lock:hover{border-color:var(--accent);color:var(--accent-ink)}
.lock.on{background:var(--accent);border-color:var(--accent);color:#06241b;box-shadow:0 0 0 3px rgba(20,199,154,.16)}
.ctrl.is-locked label{color:var(--accent-ink)}

input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:999px;outline:none;cursor:pointer;
  background:linear-gradient(90deg,var(--accent),var(--accent-deep)) no-repeat, var(--line);
  background-size:var(--p,0%) 100%}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;
  background:#fff;border:2px solid var(--accent);cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.5);transition:transform .12s,box-shadow .12s}
input[type=range]:hover::-webkit-slider-thumb{box-shadow:0 0 0 6px rgba(20,199,154,.16),0 2px 8px rgba(0,0,0,.5)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.14);box-shadow:0 0 0 8px rgba(20,199,154,.22),0 3px 10px rgba(0,0,0,.55)}
input[type=range]::-moz-range-track{height:6px;border-radius:999px;background:var(--line)}
input[type=range]::-moz-range-progress{height:6px;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-deep))}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border:2px solid var(--accent);background:#fff;border-radius:50%;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.5)}

/* ---------- buttons ---------- */
.btns{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:14px}
.btns .wide{grid-column:1/-1}
button.act{font-family:"Zen Kaku Gothic New",sans-serif;font-size:13px;padding:11px 10px;border-radius:9px;
  border:1px solid var(--line);background:var(--panel-2);color:var(--ink);cursor:pointer;transition:.15s;
  display:inline-flex;align-items:center;justify-content:center;gap:7px}
button.act .ico{width:16px;height:16px}
button.act:hover{border-color:var(--accent);color:var(--accent-ink);background:rgba(20,199,154,.08)}
button.primary{grid-column:1/-1;background:var(--accent);color:#fff;border-color:var(--accent);font-weight:700;
  box-shadow:0 10px 22px -8px rgba(20,199,154,.6)}
button.primary:hover{filter:brightness(1.08);background:var(--accent);color:#fff}
button.act.toggle.on{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 0 3px rgba(20,199,154,.18)}
button.act.subtle{color:var(--ink-dim);border-style:dashed;background:var(--panel)}
button.act.subtle:hover{color:var(--accent-ink);border-style:solid;border-color:var(--accent);background:rgba(20,199,154,.08)}
button.act:disabled{opacity:.45;cursor:not-allowed}
button.act:disabled:hover{border-color:var(--line);color:#fff;background:var(--accent);filter:none}
.hidden-input{display:none}

/* 鏡面反射の画像 */
.reflect-ctrl .refl-buttons{display:flex;gap:6px}
.act.mini{font-family:"Zen Kaku Gothic New",sans-serif;font-size:12px;padding:8px 10px;border-radius:8px;
  border:1px solid var(--line);background:var(--panel-2);color:var(--ink);cursor:pointer;transition:.15s;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;flex:1}
.act.mini .ico{width:15px;height:15px}
.act.mini:hover{border-color:var(--accent);color:var(--accent-ink);background:rgba(20,199,154,.08)}
.act.mini.refl-clear{flex:0 0 auto;width:38px;color:var(--ink-dim)}
.ctrl-note{margin:9px 0 0;font-size:11px;line-height:1.6;color:var(--ink-dim)}

/* ---------- content ---------- */
.content{position:relative;z-index:1;max-width:880px;margin:46px auto 0;padding:34px 30px 26px;
  border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:var(--shadow);
  color:#c8bad6;font-size:14.5px;line-height:1.9}
@media(max-width:560px){.content{padding:26px 18px 22px}}
.content h2{color:#f3ebf8;font-size:clamp(18px,4.4vw,22px);font-weight:700;line-height:1.4;margin:36px 0 14px;
  display:flex;align-items:flex-start;gap:10px}
.content h2::before{content:"";flex:none;width:4px;height:1.1em;margin-top:.16em;border-radius:2px;background:linear-gradient(var(--accent),var(--accent-deep))}
.content h2:first-of-type{margin-top:0}
.content h3{color:var(--accent-ink);font-size:14px;font-weight:600;margin:22px 0 8px;font-family:"DM Mono",monospace;letter-spacing:.02em}
.content p{margin:0 0 12px}
.content p.lead{color:#efe7f5;font-size:15px}
.content strong{color:#fff;font-weight:700}
.content .note-line{font-size:12.5px;color:var(--ink-dim)}
.steps{list-style:none;padding:0;margin:0 0 14px;counter-reset:st;display:grid;gap:10px}
.steps li{counter-increment:st;position:relative;padding:12px 14px 12px 54px;border:1px solid var(--line);border-radius:10px;background:var(--panel-2);color:var(--ink)}
.steps li::before{content:counter(st);position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:"DM Mono",monospace;font-size:13px;color:#fff;background:var(--accent);font-weight:700}
.steps li b{color:var(--accent-ink);font-weight:600}
.content .uses{margin:0 0 14px;padding-left:1.25em}
.content .uses li{margin:0 0 7px}
.content details{border:1px solid var(--line);border-radius:10px;background:var(--panel-2);margin:0 0 10px;overflow:hidden}
.content summary{cursor:pointer;padding:13px 44px 13px 16px;color:var(--ink);font-weight:500;list-style:none;position:relative}
.content summary::-webkit-details-marker{display:none}
.content summary::after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--accent-ink);font-family:"DM Mono",monospace;font-size:18px;transition:.2s}
.content details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.content details p{margin:0;padding:0 16px 14px;font-size:13.5px;color:var(--ink-dim)}

/* ---------- footer ---------- */
.site-foot{margin:34px auto 0;max-width:880px;text-align:center;padding:6px 16px}
.site-foot .foot-tag{font-size:12.5px;color:var(--ink-dim);margin:0 0 12px}
.site-foot .foot-links{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;font-size:13px}
.site-foot .foot-links a{color:var(--accent-ink);text-decoration:none;padding:3px 4px;border-radius:5px;transition:.15s}
.site-foot .foot-links a:hover{color:#fff;text-decoration:underline}
.site-foot .foot-links .sep{color:#4a3a58;font-size:12px}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:18px;
  background:rgba(6,3,12,.72);backdrop-filter:blur(5px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s,visibility .3s}
.modal.show{opacity:1;visibility:visible;pointer-events:auto}
.modal-box{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;max-width:94vw;max-height:90vh;
  display:flex;flex-direction:column;gap:11px;box-shadow:0 30px 70px -20px rgba(0,0,0,.8)}
.modal-head{display:flex;align-items:center;justify-content:space-between;font-family:"DM Mono",monospace;font-size:12px;color:var(--accent-ink)}
.modal-head button{background:none;border:1px solid var(--line);color:var(--ink);border-radius:8px;width:32px;height:32px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center}
.modal-head button svg{width:16px;height:16px}
.modal-box img{max-width:100%;max-height:62vh;border-radius:8px;object-fit:contain;display:block;border:1px solid var(--line)}
.modal-tip{font-size:12.5px;color:var(--ink-dim);text-align:center;line-height:1.6}