/* =========================================================================
 * 雷神トントン相撲 — 宇宙場所
 * 「かわいい × 和風 × 宇宙 × アナログゲーム」。
 * 背景は暗い宇宙、カードや文字は明るくして読みやすさを優先する。
 * ========================================================================= */
:root{
  --void:#0a0f24;
  --void2:#141b3a;
  --ink:#2c2118;
  --sumi:#3a2d22;
  --aka:#d94a3d;
  --aka-dark:#96281d;
  --gold:#ffd166;
  --neon:#8ce8ff;
  --card:#fdf6e6;
  --card-edge:#c9b48c;
  --shadow:rgba(0,0,0,.45);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{
  margin:0;
  font-family:"Hiragino Maru Gothic ProN","Hiragino Sans",-apple-system,"Segoe UI",system-ui,sans-serif;
  color:#f2eadb;
  background:var(--void);
  display:flex;
  justify-content:center;
  overscroll-behavior:none;
}
/* 画面全体の宇宙。星は静止した点なので描画コストはかからない。 */
body::before{
  content:"";
  position:fixed; inset:0; z-index:-2;
  background:
    radial-gradient(circle at 18% 12%, rgba(120,90,220,.22), transparent 42%),
    radial-gradient(circle at 84% 78%, rgba(60,140,190,.18), transparent 45%),
    linear-gradient(180deg,#0a0f24 0%,#141b3a 55%,#1b1433 100%);
}
body::after{
  content:"";
  position:fixed; inset:-50%; z-index:-1;
  background-image:
    radial-gradient(1.6px 1.6px at 20% 30%, #fff 50%, transparent 52%),
    radial-gradient(1.2px 1.2px at 65% 12%, #fff 50%, transparent 52%),
    radial-gradient(1.8px 1.8px at 82% 46%, #ffe9a8 50%, transparent 52%),
    radial-gradient(1.2px 1.2px at 35% 72%, #fff 50%, transparent 52%),
    radial-gradient(1.4px 1.4px at 8% 58%, #c9f4ff 50%, transparent 52%),
    radial-gradient(1.1px 1.1px at 52% 88%, #fff 50%, transparent 52%),
    radial-gradient(1.5px 1.5px at 92% 20%, #fff 50%, transparent 52%),
    radial-gradient(1.1px 1.1px at 44% 44%, #fff 50%, transparent 52%);
  background-size:280px 280px;
  opacity:.55;
  animation:drift 140s linear infinite;
}
@keyframes drift{ from{ transform:translate(0,0); } to{ transform:translate(280px,140px); } }

#app{
  width:100%;
  max-width:1200px;          /* 土俵を主役にするため広げる */
  padding:10px 16px 18px;
  display:flex;
  flex-direction:column;
}
/* 選択画面は読みやすい幅に留める（広げるのは対戦画面だけ） */
#screen-player{ max-width:960px; width:100%; margin:0 auto; }

/* ---------- タイトル ---------- */
.brand{ text-align:center; margin:0 0 6px; }
.brand-title{
  margin:0;
  font-size:clamp(17px,3.4vw,22px);
  letter-spacing:.16em;
  color:#fff4dc;
  text-shadow:0 0 14px rgba(140,232,255,.45), 0 2px 0 rgba(0,0,0,.4);
}
.brand-sub{
  margin:2px auto 0;
  display:inline-block;
  font-size:11.5px; letter-spacing:.34em; text-indent:.34em;
  color:#0d1329;
  background:linear-gradient(180deg,var(--gold),#e8a93f);
  padding:2px 12px;
  border-radius:999px;
  box-shadow:0 0 12px rgba(255,209,102,.45);
}

/* ---------- 画面共通 ---------- */
.screen{ display:flex; flex-direction:column; align-items:center; gap:6px; }
.screen[hidden]{ display:none; }
.title{
  margin:6px 0 0;
  font-size:clamp(21px,5.4vw,30px);
  letter-spacing:.06em;
  color:#fff4dc;
  text-shadow:0 2px 10px rgba(0,0,0,.5);
}
.title::before,.title::after{ content:"—"; color:var(--gold); margin:0 .4em; }
.subtitle{ margin:0 0 10px; font-size:13px; color:#a9b4d6; }

/* ---------- キャラクターカード ---------- */
.card-grid{
  display:grid;
  padding-bottom:4px;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:14px;
  width:100%;
  margin-bottom:14px;
}
.char-card{
  position:relative;
  display:flex; flex-direction:column; align-items:center; gap:6px;
  padding:14px 10px 16px;
  border:2px solid rgba(140,232,255,.35);
  border-radius:18px;
  background:var(--card);
  color:var(--ink);
  box-shadow:0 4px 0 var(--card-edge), 0 10px 24px var(--shadow), 0 0 18px rgba(140,232,255,.14);
  cursor:pointer;
  font:inherit;
  transition:transform .12s ease, box-shadow .12s ease;
}
.char-card:hover:not(:disabled){
  transform:translateY(-3px);
  box-shadow:0 7px 0 var(--card-edge), 0 14px 28px var(--shadow), 0 0 26px rgba(140,232,255,.3);
}
.char-card:active:not(:disabled){ transform:translateY(2px); box-shadow:0 2px 0 var(--card-edge), 0 4px 12px var(--shadow); }
.char-card:disabled{ cursor:not-allowed; filter:grayscale(.85); opacity:.4; box-shadow:0 2px 0 var(--card-edge); }
.char-card .thumb{
  width:104px; height:104px;
  display:flex; align-items:flex-end; justify-content:center;
  border-radius:50%;
  background:radial-gradient(circle at 50% 70%, var(--tint,#eee) 0%, transparent 72%);
}
.char-card .thumb img{ width:100%; height:100%; object-fit:contain; }
.char-card .thumb .fallback{
  width:66px; height:78px; border-radius:34px 34px 22px 22px;
  background:var(--tint,#999);
  box-shadow:inset 0 -10px 0 rgba(0,0,0,.12);
}
.char-card .name{ font-size:19px; font-weight:700; letter-spacing:.05em; }
.char-card .tagline{ font-size:12.5px; opacity:.72; text-align:center; line-height:1.35; }
.char-card .type{
  font-size:11px; font-weight:700; letter-spacing:.04em;
  color:#4b5a86;
  background:rgba(140,180,255,.16);
  border:1px solid rgba(80,120,200,.28);
  border-radius:999px;
  padding:2px 10px;
  margin-top:2px;
}
.char-card.selected{
  border-color:var(--gold);
  box-shadow:0 4px 0 var(--card-edge), 0 10px 26px var(--shadow), 0 0 0 3px rgba(255,209,102,.55), 0 0 30px rgba(255,209,102,.45);
  transform:translateY(-3px);
}
.char-card.selected::after{
  content:"えらんだ！";
  position:absolute; top:8px; left:10px;
  font-size:11px; font-weight:700; padding:2px 8px; border-radius:999px;
  background:var(--gold); color:#3a2d22;
}
.confirm-bar{
  position:sticky; bottom:0; z-index:3;
  padding:12px 0 10px;
  margin-top:2px;
  text-align:center;
  background:linear-gradient(180deg, rgba(10,15,36,0) 0%, rgba(10,15,36,.88) 38%, rgba(10,15,36,.96) 100%);
}
.confirm-bar .btn:disabled{ opacity:.45; cursor:not-allowed; }
.char-card .badge{
  position:absolute; top:8px; right:10px;
  font-size:11px; padding:2px 8px; border-radius:999px;
  background:var(--sumi); color:#fff; opacity:.85;
}

/* ---------- ボタン ---------- */
.btn{
  font:inherit; font-weight:700; letter-spacing:.05em;
  border:none; border-radius:999px; cursor:pointer;
  padding:12px 26px;
  transition:transform .1s ease;
}
.btn:active{ transform:translateY(2px); }
.btn-primary{ background:var(--aka); color:#fff; box-shadow:0 4px 0 var(--aka-dark), 0 0 18px rgba(217,74,61,.45); }
.btn-ghost{ background:var(--card); color:var(--sumi); box-shadow:0 4px 0 var(--card-edge); }

/* ---------- 対戦画面 ---------- */
.screen-battle{ gap:6px; width:100%; }
.topbar{ width:100%; display:flex; justify-content:flex-start; margin-bottom:-2px; }
.btn-back{
  font:inherit; font-size:12px; font-weight:700; letter-spacing:.04em;
  color:#a9b4d6; background:rgba(255,255,255,.06);
  border:1px solid rgba(140,232,255,.28); border-radius:999px;
  padding:5px 14px; cursor:pointer;
  transition:background .12s ease, color .12s ease;
}
.btn-back:hover{ background:rgba(140,232,255,.16); color:#fff4dc; }
.btn-back:active{ transform:translateY(1px); }
.btn-back:focus-visible{ outline:2px solid var(--gold); outline-offset:2px; }
.hub-link{ margin:2px 0 0; text-align:center; font-size:12px; }
.hub-link a{ color:#93a0c6; text-decoration:none; }
.hub-link a:hover{ color:var(--gold); text-decoration:underline; }
.hub-link a:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; border-radius:4px; }
.hud{
  width:100%;
  display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:10px;
}
.hud-side{ display:flex; align-items:center; gap:8px; min-width:0; }
.hud-right{ flex-direction:row-reverse; }
.hud-side .face{
  width:36px; height:36px; flex:none; border-radius:50%;
  background:var(--tint,#ddd);
  border:1.5px solid rgba(140,232,255,.4);
  display:flex; align-items:center; justify-content:center; overflow:hidden;
}
.hud-side .face img{ width:100%; height:100%; object-fit:contain; }
.hud-side .face .fallback{ width:22px; height:26px; border-radius:11px 11px 7px 7px; background:#fff6; }
.hud-side .meta{ min-width:0; }
.hud-side .who{ font-size:11px; color:#93a0c6; }
.hud-side .nm{ font-size:15px; font-weight:700; color:#fff4dc; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.hud-center{ text-align:center; width:96px; }
.gauge{
  width:96px; height:9px; border-radius:999px;
  background:rgba(255,255,255,.12); overflow:hidden;
  box-shadow:inset 0 1px 3px rgba(0,0,0,.5);
}
.gauge-fill{
  width:0%; height:100%; border-radius:999px;
  background:linear-gradient(90deg,var(--neon),var(--gold));
  transition:width .06s linear;
}
.gauge.hot .gauge-fill{ background:linear-gradient(90deg,#ff9f43,#ff5a4a); }
.gauge-label{ font-size:11px; margin-top:3px; color:#93a0c6; }
.gauge-label.hot{ color:#ff8f7a; font-weight:700; }

.stage{
  position:relative; width:100%; isolation:isolate;
  display:flex; justify-content:center;      /* 土俵を中央に大きく */
}
#dohyo{
  position:relative; z-index:1;
  display:block;              /* 幅・高さは renderer.js が画面に合わせて決める */
  border-radius:20px;
  background:#0a0f24;
  box-shadow:0 8px 30px rgba(0,0,0,.55), 0 0 0 1px rgba(140,232,255,.18);
  cursor:pointer;
  touch-action:manipulation;
}
.overlay, .vs-card{
  position:absolute; top:0; bottom:0; left:50%; transform:translateX(-50%);
  width:100%; max-width:100%;
}
.overlay{
  z-index:6;
  display:flex; align-items:center; justify-content:center;
  pointer-events:none;
}
.overlay[hidden]{ display:none; }
.overlay span{
  font-size:clamp(24px,6.4vw,40px); font-weight:800; letter-spacing:.1em;
  color:#fff6e6;
  padding:10px 28px;
  border-radius:999px;
  background:rgba(10,15,36,.86);
  border:1.5px solid rgba(140,232,255,.4);
  box-shadow:0 8px 26px rgba(0,0,0,.5), 0 0 22px rgba(140,232,255,.25);
  animation:pop .28s cubic-bezier(.2,1.6,.4,1);
}
.overlay span.basho{
  letter-spacing:.3em; text-indent:.3em;
  color:#0d1329;
  background:linear-gradient(180deg,var(--gold),#e8a93f);
  border-color:rgba(255,255,255,.6);
  box-shadow:0 8px 26px rgba(0,0,0,.5), 0 0 30px rgba(255,209,102,.55);
}
.overlay span.win{
  font-size:clamp(30px,8.4vw,52px);
  color:#fff;
  background:linear-gradient(180deg,var(--aka),var(--aka-dark));
  border-color:rgba(255,209,102,.85);
  box-shadow:0 10px 30px rgba(0,0,0,.55), 0 0 34px rgba(255,209,102,.5);
  animation:winpop .4s cubic-bezier(.2,1.7,.4,1);
}
@keyframes pop{ from{ transform:scale(.6); opacity:0; } to{ transform:scale(1); opacity:1; } }
@keyframes winpop{ 0%{ transform:scale(.4) rotate(-6deg); opacity:0; } 60%{ transform:scale(1.08) rotate(2deg); } 100%{ transform:scale(1) rotate(0); opacity:1; } }

.hint{ font-size:12px; color:#a9b4d6; margin:1px 0 0; line-height:1.35; }
.hint-sub{ font-size:10.5px; color:#7a86ab; margin:0; line-height:1.3; }

/* ---------- 結果 ---------- */
.modal{
  position:fixed; inset:0; z-index:20;
  display:flex; align-items:center; justify-content:center;
  background:rgba(6,9,22,.72);
  animation:fade .2s ease;
}
.modal[hidden]{ display:none; }
@keyframes fade{ from{opacity:0} to{opacity:1} }
.modal-box{
  background:var(--card);
  color:var(--ink);
  border:2px solid rgba(255,209,102,.55);
  border-radius:22px;
  padding:26px 28px;
  text-align:center;
  min-width:270px;
  box-shadow:0 18px 50px rgba(0,0,0,.6), 0 0 30px rgba(140,232,255,.18);
  animation:pop .3s cubic-bezier(.2,1.5,.4,1);
}
.result-reason{ margin:0; font-size:13px; opacity:.65; }
.result-title{ margin:4px 0 6px; font-size:26px; letter-spacing:.05em; color:var(--aka-dark); }
.result-line{
  margin:0 0 18px; font-size:14px; color:#5d5040;
}
.result-line[hidden]{ display:none; }
.modal-buttons{ display:flex; flex-direction:column; gap:10px; }

/* ---------- VS カード ---------- */
.vs-card{
  z-index:5;
  display:flex; align-items:center; justify-content:center; gap:24px;
  background:rgba(10,15,36,.9);
  border-radius:20px;
}
.vs-card[hidden]{ display:none; }
.vs-card .side{ display:flex; flex-direction:column; align-items:center; gap:4px; width:34%; }
.vs-card .side img{ width:86px; height:86px; object-fit:contain; }
.vs-card .side .fallback{ width:60px;height:72px;border-radius:32px 32px 20px 20px;background:var(--tint,#999); }
.vs-card .side .nm{ font-size:18px; font-weight:800; color:#fff4dc; }
.vs-card .side .who{ font-size:11px; color:#93a0c6; }
.vs-card.boss{ background:rgba(28,10,14,.93); box-shadow:inset 0 0 60px rgba(217,74,61,.35); }
.vs-card.boss .vs{ color:#ff6b5c; text-shadow:0 0 20px rgba(255,107,92,.8); }
.overlay span.kimarite{
  font-size:clamp(20px,5.2vw,34px);
  color:#fff4dc;
  background:rgba(10,15,36,.92);
  border-color:rgba(255,209,102,.7);
  letter-spacing:.14em;
}
.overlay span.kimarite.atsu{
  color:#e8e2d2;
  background:rgba(0,0,0,.86);
  border-color:rgba(190,180,150,.5);
  box-shadow:0 0 50px rgba(0,0,0,.95);
  letter-spacing:.36em; text-indent:.36em;
  animation:atsu 1.4s ease-out;
}
@keyframes atsu{
  0%{ transform:scale(1.12); opacity:0 }
  30%{ opacity:1 }
  100%{ transform:scale(1); opacity:1 }
}
.overlay span.omen-dark{
  color:#e8e2d2;
  background:rgba(0,0,0,.78);
  border-color:rgba(200,190,160,.4);
  box-shadow:0 0 40px rgba(0,0,0,.9);
  letter-spacing:.26em;
  animation:creep 1.5s ease-out;
}
@keyframes creep{
  0%{ transform:scale(1.28); opacity:0; letter-spacing:.6em }
  55%{ opacity:1 }
  100%{ transform:scale(1); opacity:1; letter-spacing:.26em }
}
.overlay span.arrival{
  font-size:clamp(26px,7vw,46px);
  color:#fff3d0;
  background:linear-gradient(180deg,#1b2340,#0a0f24);
  border-color:rgba(255,209,102,.9);
  box-shadow:0 10px 34px rgba(0,0,0,.7), 0 0 46px rgba(255,209,102,.55);
  animation:arrive .55s cubic-bezier(.2,1.5,.35,1);
}
@keyframes arrive{
  0%{ transform:scale(2.1); opacity:0 }
  45%{ transform:scale(.94); opacity:1 }
  70%{ transform:scale(1.05) }
  100%{ transform:scale(1); opacity:1 }
}
.boss-tag{
  margin-left:6px; padding:1px 7px; border-radius:999px;
  font-size:10px; font-weight:800; letter-spacing:.08em;
  background:linear-gradient(180deg,#d94a3d,#8e2a1f);
  color:#fff6e6;
  box-shadow:0 0 12px rgba(217,74,61,.65);
}
.overlay span.omen{
  color:#3a2d22;
  background:linear-gradient(180deg,#ffe9a8,#e8b93a);
  border-color:rgba(255,255,255,.85);
  box-shadow:0 8px 30px rgba(0,0,0,.5), 0 0 46px rgba(255,209,102,.85);
  animation:omen 1.3s ease-in-out;
}
@keyframes omen{
  0%{ transform:scale(.7); opacity:0 }
  18%{ transform:scale(1.04); opacity:1 }
  40%,60%{ filter:brightness(1.35) }
  50%{ filter:brightness(1) }
  100%{ transform:scale(1); opacity:1 }
}
.overlay span.cpu{
  color:#fff6e6;
  background:rgba(10,15,36,.9);
  border-color:rgba(140,232,255,.55);
}
.overlay span.boss{
  color:#fff;
  background:linear-gradient(180deg,#7a1a14,#3d0d0a);
  border-color:rgba(255,107,92,.8);
  box-shadow:0 8px 26px rgba(0,0,0,.6), 0 0 34px rgba(255,107,92,.5);
  letter-spacing:.2em;
}
.vs-card .vs{
  font-size:34px; font-weight:900; font-style:italic; color:var(--gold);
  text-shadow:0 0 18px rgba(255,209,102,.6);
}
.vs-card .side.enter-l{ animation:slideL .35s cubic-bezier(.2,1.4,.4,1); }
.vs-card .side.enter-r{ animation:slideR .35s cubic-bezier(.2,1.4,.4,1); }
@keyframes slideL{ from{ transform:translateX(-60px); opacity:0 } }
@keyframes slideR{ from{ transform:translateX(60px); opacity:0 } }