:root{
  --bg:#4FA8E0; --panel:#246d9c; --ink:#FFF8EC; --muted:#dcefff;
  --accent:#FFC93C; --accent2:#C0392B; --ok:#8fcf4e; --slot:#3c8fbd;
  --ad-banner-height:0px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);
  font-family:-apple-system,"Hiragino Sans","Yu Gothic",sans-serif;overflow:hidden;}
button{font-family:inherit;cursor:pointer;}

/* 画面 */
.screen{position:fixed;inset:0;display:none;flex-direction:column;}
.screen.active{display:flex;}

/* タイトル画面 */
#screen-title{overflow:hidden;}
/* 専用タイトル絵(title_bg.png)が来れば自動で上に重なる。無ければ扉絵が出る安全設計 */
.title-bg{position:absolute;inset:0;
  background:url('assets/ui/title_bg.png') center/cover, url('assets/ch1/scene_kuji.png') center/cover;
  transform:scale(1.08);filter:brightness(.6) saturate(.95);animation:titlepan 24s ease-in-out infinite alternate;}
@keyframes titlepan{from{transform:scale(1.08) translateY(0);}to{transform:scale(1.14) translateY(-2%);}}
.title-vignette{position:absolute;inset:0;
  background:radial-gradient(ellipse at 50% 38%,rgba(20,16,28,.15),rgba(12,9,18,.86) 78%),
             linear-gradient(180deg,rgba(12,9,18,.5),rgba(12,9,18,.2) 30%,rgba(12,9,18,.92));}
.title-dust{position:absolute;inset:0;pointer-events:none;}
.title-dust i{position:absolute;width:4px;height:4px;border-radius:50%;background:rgba(224,169,109,.5);
  filter:blur(.5px);animation:dust linear infinite;}
.title-dust i:nth-child(1){left:12%;animation-duration:13s;animation-delay:0s;}
.title-dust i:nth-child(2){left:26%;animation-duration:17s;animation-delay:2s;}
.title-dust i:nth-child(3){left:39%;animation-duration:15s;animation-delay:5s;}
.title-dust i:nth-child(4){left:53%;animation-duration:19s;animation-delay:1s;}
.title-dust i:nth-child(5){left:64%;animation-duration:14s;animation-delay:7s;}
.title-dust i:nth-child(6){left:73%;animation-duration:18s;animation-delay:3s;}
.title-dust i:nth-child(7){left:85%;animation-duration:16s;animation-delay:6s;}
.title-dust i:nth-child(8){left:93%;animation-duration:20s;animation-delay:4s;}
@keyframes dust{0%{top:108%;opacity:0;}10%{opacity:.7;}90%{opacity:.7;}100%{top:-8%;opacity:0;}}
.title-content{position:relative;z-index:2;margin:auto;text-align:center;padding:24px;max-width:440px;
  display:flex;flex-direction:column;align-items:center;}
.title-emblem{font-size:34px;margin-bottom:6px;filter:drop-shadow(0 0 14px rgba(224,169,109,.6));}
.title-main{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:33px;line-height:1.3;
  letter-spacing:.08em;margin:0 0 18px;font-weight:600;white-space:normal;max-width:100%;
  background:linear-gradient(180deg,#f6e4c4,#e0a96d 60%,#caa05f);-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 2px 24px rgba(224,169,109,.25);}
.title-main .title-sub{display:block;white-space:normal;font-size:21px;margin-top:8px;letter-spacing:.2em;opacity:.95;
  background:none;color:#eccf9f;-webkit-text-fill-color:#eccf9f;text-shadow:0 1px 10px rgba(224,169,109,.4);}
.title-tagline{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;color:#cfc6d8;font-size:14px;line-height:2;margin:0 0 34px;opacity:.9;}
.title-buttons{display:flex;flex-direction:column;gap:12px;width:240px;}
.title-buttons .big-btn{margin:0;}

/* 言語切替・プレミアムバッジ（タイトル右上） */
.lang-btn{position:absolute;top:calc(env(safe-area-inset-top,0px) + 10px);left:12px;z-index:9991;
  width:44px;height:32px;border-radius:10px;border:2px solid rgba(255,255,255,.6);
  background:rgba(30,40,60,.55);color:var(--ink);font-size:12px;font-weight:700;}
.premium-badge{position:absolute;top:calc(env(safe-area-inset-top,0px) + 10px);right:12px;z-index:9991;
  width:32px;height:32px;border-radius:10px;background:rgba(224,169,109,.25);
  display:flex;align-items:center;justify-content:center;font-size:16px;}
.daily-streak-badge{display:inline-block;font-size:12px;margin-left:4px;color:#ffdca0;}
/* コインバッジ（タイトル右上・プレミアムバッジの下） */
.coin-btn{position:absolute;top:calc(env(safe-area-inset-top,0px) + 48px);right:12px;z-index:9991;
  border:2px solid rgba(255,255,255,.5);border-radius:14px;background:rgba(30,40,60,.55);
  color:var(--ink);font-size:13px;font-weight:700;padding:6px 10px;}

/* クリア */
.title-card{margin:auto;text-align:center;padding:24px;max-width:420px;}
.title-card h1{font-size:32px;letter-spacing:.04em;margin:0 0 28px;}
.clear-msg,.reason-text{color:var(--muted);line-height:1.7;}
.big-btn{display:block;width:240px;margin:12px auto;padding:14px;border:none;border-radius:14px;
  background:var(--panel);color:var(--ink);font-size:17px;}
.big-btn.primary{background:linear-gradient(135deg,var(--accent),#d4915a);color:#241c12;font-weight:700;}

/* 上バー */
.topbar{display:flex;align-items:center;justify-content:space-between;
  padding:calc(env(safe-area-inset-top) + 8px) 14px 8px;background:var(--panel);}
.scene-name{font-size:15px;color:var(--muted);}
.top-actions{display:flex;gap:8px;}
.icon-btn{width:38px;height:38px;border:none;border-radius:50%;background:var(--slot);color:var(--ink);font-size:18px;}

/* ステージ（背景＋ホットスポット） */
#stage-wrap{position:relative;flex:1;overflow:hidden;}
#stage{position:absolute;inset:0;}
/* 画像を画面いっぱいに表示（画像内の位置＝画面%が一致＝ホットスポットがズレない） */
.bg{position:absolute;inset:0;background-size:100% 100%;background-position:center;background-color:#2e2a3d;}
.bg-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  white-space:pre-line;text-align:center;color:#6f6886;font-size:13px;opacity:.6;}
.hotspot{position:absolute;border:none;background:transparent;border-radius:10px;padding:0;}
.hotspot.debug{background:rgba(224,169,109,.18);outline:1px dashed var(--accent);}
.hotspot:active{background:rgba(255,255,255,.10);}

/* タップの波紋 */
.ripple{position:absolute;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;
  background:rgba(255,255,255,.55);pointer-events:none;animation:rip .5s ease-out forwards;}
@keyframes rip{to{transform:scale(5);opacity:0;}}

/* ナビ矢印（固定位置＝鉄則①） */
.nav{position:absolute;border:none;background:rgba(20,18,30,.6);color:var(--ink);backdrop-filter:blur(4px);}
.nav-l,.nav-r{top:50%;transform:translateY(-50%);width:48px;height:64px;font-size:30px;border-radius:12px;}
.nav-l{left:8px;} .nav-r{right:8px;}
.nav-b{left:50%;transform:translateX(-50%);bottom:10px;padding:8px 18px;border-radius:20px;font-size:14px;}

/* 選択中ヒント */
.selected-hint{display:none;text-align:center;font-size:12px;color:#241c12;background:var(--accent);padding:6px;}

/* インベントリ（左詰め・使ったら消える） */
.inventory{display:flex;gap:8px;padding:10px 12px calc(env(safe-area-inset-bottom) + 10px);
  background:var(--panel);overflow-x:auto;min-height:74px;}
.slot{position:relative;flex:0 0 auto;width:56px;height:56px;border:2px solid transparent;border-radius:12px;
  background:var(--slot) center/70% no-repeat;}
.slot.selected{border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,169,109,.3);}
.slot-label{position:absolute;left:0;right:0;bottom:-2px;font-size:9px;color:var(--muted);text-align:center;}

/* モーダル */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;
  background:rgba(8,6,14,.66);padding:18px;z-index:30;}
.modal.active{display:flex;}
.modal-card{background:var(--panel);border-radius:18px;padding:22px;width:100%;max-width:380px;text-align:center;}
.modal-card h2{margin:0 0 14px;font-size:19px;}
.modal-actions{display:flex;gap:10px;justify-content:center;margin-top:16px;}
.ghost-btn{background:var(--slot);color:var(--ink);border:none;padding:11px 16px;border-radius:12px;font-size:14px;}

/* コード入力 */
.code-display{font-size:34px;letter-spacing:.3em;background:#15131f;border-radius:12px;padding:14px;margin-bottom:14px;}
.keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;}
.key{padding:16px;font-size:20px;border:none;border-radius:12px;background:var(--slot);color:var(--ink);}
.key:active{background:var(--accent2);}
.optionpad{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;}
.optionpad .opt{flex:0 0 auto;padding:14px 16px;font-size:16px;}
.optionpad .opt.clear{background:#15131f;color:var(--muted);}
.chapter-card h2{font-size:24px;margin:8px 0 4px;}
.puzzle-hints{margin-top:12px;text-align:left;}
.hint-line{font-size:13px;color:var(--accent);background:#15131f;border-radius:8px;padding:8px 10px;margin-top:6px;}

/* ことば入力（ひらがな/絵文字） */
.kanapad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;}
.emojipad{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;}
.emojipad .key{font-size:26px;padding:14px;}

/* あそび型（play-scoop/target/trace）共通ボタン群 */
.playpad{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.play-target-btn{min-width:56px;padding:14px;font-size:16px;transition:transform .15s;}
.play-target-btn.picked{background:var(--ok);color:#123;transform:scale(1.05);}
.playpad.play-trace .play-target-btn{border-radius:50%;width:56px;height:56px;padding:0;}
.playpad.play-sortmail{display:grid;grid-template-columns:repeat(3,1fr);align-items:center;}
.mail-envelope{grid-column:1/-1;background:#fff8ec;color:#6a3e25;border:3px solid #c0392b;min-height:64px;font-size:14px;}
.mail-slot{min-height:88px;background:#fff8ec;color:#27516c;border:3px solid #ffc93c;font-size:13px;}
.play-target-btn.has-icon{position:relative;width:84px;height:84px;padding:0;overflow:hidden;
  background-size:cover;background-position:center;display:flex;align-items:flex-end;justify-content:center;}
.play-target-btn.has-icon .play-target-cap{display:block;width:100%;padding:3px 2px;font-size:12px;
  background:rgba(20,18,30,.72);color:var(--ink);text-align:center;}
.play-target-btn.has-icon.picked{outline:3px solid var(--accent,#e0a96d);}

/* あそび型（play-spotdiff）専用：2枚の写真を並べたまちがいさがしレイアウト。
   .playpad の視覚言語（余白/角丸/配色）を踏襲しつつ、2パネル表示だけ追加する。 */
.playpad.play-spotdiff{flex-direction:column;gap:12px;}
.spotdiff-images{display:flex;gap:10px;width:100%;justify-content:center;}
.spotdiff-panel{flex:1 1 0;display:flex;flex-direction:column;align-items:center;gap:6px;max-width:180px;}
.spotdiff-img{width:100%;aspect-ratio:1/1;border-radius:12px;background:var(--slot) center/cover no-repeat;
  border:2px solid rgba(255,255,255,.08);}
.spotdiff-cap{font-size:11px;color:var(--muted);}
.spotdiff-targets{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;width:100%;}
.spotdiff-btn.picked{background:var(--ok);color:#123;}

/* デイリークイズ */
.daily-streak-text{color:var(--accent);font-size:13px;margin:0 0 10px;}
.daily-question{font-size:15px;line-height:1.7;margin:0 0 14px;}
.daily-choices{display:flex;flex-direction:column;gap:8px;}
.daily-choices .daily-choice{width:100%;margin:0;text-align:left;}
.daily-result{color:var(--ok);font-size:14px;min-height:20px;margin-top:12px;}

/* お面コレクション／ご近所さんガチャ コレクション（同じ視覚パターンを共有） */
.collection-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-height:56vh;overflow-y:auto;}
.mask-cell{display:flex;flex-direction:column;align-items:center;gap:4px;}
.mask-img{width:56px;height:56px;border-radius:12px;background:var(--slot) center/70% no-repeat;
  display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--muted);}
.mask-cell.locked .mask-img{filter:grayscale(1) brightness(.5);}
.mask-name{font-size:11px;color:var(--muted);text-align:center;}
.mask-rarity{font-size:10px;color:var(--accent);}

/* ご近所さんガチャ */
.gacha-coins-row{display:flex;align-items:center;justify-content:center;gap:10px;margin:0 0 6px;}
.gacha-coins{font-size:16px;font-weight:700;color:var(--accent);}
.gacha-cost{font-size:12px;color:var(--muted);}
.gacha-rates{font-size:11px;color:var(--muted);text-align:center;margin:0 0 12px;}
.gacha-grid{margin-top:14px;max-height:38vh;}

/* 実績/メダル一覧 */
.achievements-list{text-align:left;max-height:56vh;overflow-y:auto;display:flex;flex-direction:column;gap:8px;}
.achv-row{display:flex;align-items:center;gap:10px;background:#15131f;border-radius:10px;padding:9px 12px;}
.achv-icon{font-size:18px;width:26px;text-align:center;}
.achv-name{font-size:13px;color:var(--ink);}
.achv-row.locked .achv-name{color:var(--muted);}

.reason-text{text-align:left;}

/* 物語 */
.story-card{background:linear-gradient(160deg,#2a2438,#211d2e);}
.story-text{font-size:16px;line-height:2;color:var(--ink);min-height:90px;display:flex;align-items:center;justify-content:center;text-align:center;margin:6px 0 4px;}

/* 手がかりメモ帳 */
.notebook-list{text-align:left;max-height:50vh;overflow-y:auto;}
.notebook-list .empty{color:var(--muted);text-align:center;line-height:1.8;}
.clue-item{background:#15131f;border-left:3px solid var(--accent);border-radius:8px;padding:10px 12px;margin-top:8px;font-size:14px;line-height:1.6;}
#btn-notebook.flash{animation:nbflash 1.2s ease;}
@keyframes nbflash{0%,100%{background:var(--slot);}30%{background:var(--accent);box-shadow:0 0 0 4px rgba(224,169,109,.4);}}
.zoom-img{height:200px;background:#15131f center/contain no-repeat;border-radius:12px;}
.zoom-msg{color:var(--muted);font-size:14px;margin-top:10px;}

/* トースト */
.toast{position:fixed;left:50%;bottom:calc(90px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(20px);
  background:#15131f;color:var(--ink);padding:12px 18px;border-radius:12px;max-width:80%;text-align:center;
  font-size:14px;line-height:1.5;opacity:0;pointer-events:none;transition:.25s;z-index:40;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}