:root{
  --bg:#0f1a24;--panel:#1a2a3a;--text:#f0f6fc;--muted:#9bb0c4;
  --accent:#7dd3fc;--good:#6ee7b7;--warn:#fbbf24;--touch:72px;
  --safe-t:env(safe-area-inset-top,0px);--safe-b:env(safe-area-inset-bottom,0px);
  --safe-l:env(safe-area-inset-left,0px);--safe-r:env(safe-area-inset-right,0px);
  --c0:#ef4444;--c1:#3b82f6;--c2:#22c55e;--c3:#eab308;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
body{
  min-height:100dvh;font-family:"PingFang TC","Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;
  background:radial-gradient(ellipse at 20% 0%,#1e3a5f,transparent 50%),radial-gradient(ellipse at 80% 100%,#14532d,transparent 45%),var(--bg);
  color:var(--text);
  padding:max(.5rem,var(--safe-t)) max(.65rem,var(--safe-r)) max(.5rem,var(--safe-b)) max(.65rem,var(--safe-l));
  user-select:none;touch-action:manipulation;
}
button{font:inherit;border:none;cursor:pointer;color:inherit}
button:active:not(:disabled){transform:scale(.98)}
button:disabled{opacity:.45}
.app{max-width:720px;margin:0 auto;min-height:calc(100dvh - 1rem);display:flex;flex-direction:column}
.screen{flex:1;display:flex;flex-direction:column;gap:.5rem;min-height:0}
.hidden{display:none!important}
.top{text-align:center}
.top h1{font-size:clamp(1rem,3.4vw,1.3rem);color:var(--accent);font-weight:800}
.gentle{color:var(--muted);font-weight:600;margin-top:.3rem}
.top-actions{display:flex;gap:.5rem;justify-content:center;margin-top:.5rem;flex-wrap:wrap}
.btn-chip{min-height:52px;padding:.4rem 1rem;border-radius:999px;background:rgba(125,211,252,.12);border:1px solid rgba(125,211,252,.35);color:var(--accent);font-weight:800}
.panel{flex:1;background:var(--panel);border-radius:16px;padding:.9rem;border:1px solid rgba(125,211,252,.15);overflow-y:auto}
.label{color:var(--warn);font-weight:800;margin:.4rem 0 .45rem}
.chips{display:flex;flex-wrap:wrap;gap:.45rem}
.chip,.chips button{min-height:var(--touch);min-width:5rem;padding:.5rem .8rem;border-radius:14px;background:rgba(0,0,0,.28);border:2px solid rgba(155,176,196,.25);font-weight:800}
.chip.active,.chips button.active{border-color:var(--warn);background:rgba(251,191,36,.18);color:var(--warn)}
.current{margin-top:.5rem;font-weight:800;font-size:1.1rem}
.current span{color:var(--warn)}
.hint{color:var(--muted);font-weight:600;margin:.5rem 0;line-height:1.45}
.btn-start,.btn.big{min-height:76px;width:100%;margin-top:.7rem;border-radius:16px;font-size:1.2rem;font-weight:900}
.btn-start,.btn.primary{background:linear-gradient(180deg,#4ade80,#16a34a);color:#052e16}
.btn.secondary{background:linear-gradient(180deg,#7dd3fc,#0ea5e9);color:#082f49;width:100%;min-height:68px;border-radius:14px;font-weight:900;margin-top:.4rem}
.btn.ghost{background:rgba(255,255,255,.08);width:100%;min-height:56px;border-radius:14px;font-weight:800;margin-top:.35rem}
.btn{min-height:56px;border-radius:14px;font-weight:900;padding:0 .8rem;background:rgba(255,255,255,.08)}
.game-head{background:var(--panel);border-radius:16px;padding:.65rem .8rem;border:1px solid rgba(74,222,128,.25)}
.row-between{display:flex;justify-content:space-between;align-items:center;font-weight:900;gap:.5rem;flex-wrap:wrap}
#turn-label{color:var(--warn)}
.toast{min-height:1.3em;text-align:center;color:var(--good);font-weight:800;margin-top:.3rem}
.stats-mini{
  display:flex;justify-content:center;gap:1.2rem;margin-top:.35rem;
  font-weight:800;font-size:.95rem;color:var(--muted);
}
.stats-mini b{color:var(--warn);font-size:1.05rem}
.base small{font-weight:700;font-size:.8rem}
.board-area{flex:1;min-height:0;display:flex;flex-direction:column;gap:.5rem;overflow:auto}
.track{
  display:grid;grid-template-columns:repeat(6,1fr);gap:.4rem;
  background:linear-gradient(180deg,#166534,#1a2a3a);border-radius:18px;padding:.7rem;
  border:4px solid rgba(74,222,128,.5);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);
}
.cell{
  aspect-ratio:1;border-radius:12px;background:rgba(255,255,255,.12);
  border:2px solid rgba(255,255,255,.22);position:relative;
  display:flex;align-items:center;justify-content:center;font-size:.78rem;color:#dbeafe;font-weight:800;
}
.cell.start{border-color:var(--warn)}
.cell.end{background:rgba(251,191,36,.25);border-color:var(--warn);font-size:.85rem;color:var(--warn)}
.plane{
  width:82%;height:82%;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:clamp(1rem,4vw,1.35rem);font-weight:900;color:#fff;
  box-shadow:0 3px 10px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.35);
  border:3px solid #fff; text-shadow:0 1px 2px rgba(0,0,0,.45);
}
.plane.c0{background:radial-gradient(circle at 35% 30%,#fca5a5,var(--c0) 55%,#991b1b)}
.plane.c1{background:radial-gradient(circle at 35% 30%,#93c5fd,var(--c1) 55%,#1e40af)}
.plane.c2{background:radial-gradient(circle at 35% 30%,#86efac,var(--c2) 55%,#166534)}
.plane.c3{background:radial-gradient(circle at 35% 30%,#fde047,var(--c3) 55%,#a16207)}
.bases{display:grid;grid-template-columns:1fr 1fr;gap:.4rem}
.base{
  border-radius:12px;padding:.45rem .55rem;font-weight:800;font-size:.9rem;
  display:flex;align-items:center;justify-content:space-between;gap:.35rem;
  border:2px solid rgba(255,255,255,.12);background:rgba(0,0,0,.22);
}
.base.on{box-shadow:0 0 0 2px var(--warn)}
.base .dot{width:1.5rem;height:1.5rem;border-radius:50%;border:2px solid #fff}
.online-panel{margin-top:.6rem;padding-top:.4rem;border-top:1px dashed rgba(125,211,252,.25)}
.room-list{display:flex;flex-direction:column;gap:.4rem;margin:.35rem 0 .5rem;min-height:2rem}
.room-list .room-btn{
  min-height:var(--touch);border-radius:14px;padding:.55rem .8rem;text-align:left;
  background:rgba(0,0,0,.28);border:2px solid rgba(125,211,252,.3);font-weight:800;
  display:flex;justify-content:space-between;align-items:center;gap:.5rem;flex-wrap:wrap;
}
.room-list .room-btn:disabled{opacity:.5}
.room-list .empty{color:var(--muted);font-weight:700;text-align:center;padding:.6rem}
.lobby-players{display:flex;flex-direction:column;gap:.4rem;margin:.4rem 0}
.lobby-players .lp{
  border-radius:12px;padding:.55rem .7rem;font-weight:800;
  background:rgba(0,0,0,.25);border:2px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;align-items:center;
}
.lobby-players .lp.me{border-color:var(--warn);color:var(--warn)}
#lobby-code{color:var(--accent);font-weight:900;letter-spacing:.12em}
#room-badge{color:var(--accent)}
.dice-area{display:flex;justify-content:center;padding:.25rem 0}
.dice-btn{
  width:min(210px,58vw);height:min(210px,58vw);border-radius:32px;
  background:linear-gradient(180deg,#fef3c7,#f59e0b);color:#451a03;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.3rem;
  box-shadow:0 12px 32px rgba(245,158,11,.5);border:5px solid #fff;
}
.dice-btn #dice-face{font-size:3.8rem;line-height:1;font-weight:900}
.dice-sub{font-weight:900;font-size:1.15rem}
.dice-btn.rolling{animation:shake .4s}
@keyframes shake{25%{transform:rotate(-8deg)}75%{transform:rotate(8deg)}}
.actions{display:grid;grid-template-columns:1fr 1fr;gap:.4rem;flex-shrink:0}
.overlay{position:fixed;inset:0;z-index:40;background:rgba(5,12,20,.75);display:flex;align-items:center;justify-content:center;padding:max(.75rem,var(--safe-t)) max(.75rem,var(--safe-r)) max(.75rem,var(--safe-b)) max(.65rem,var(--safe-l));overflow-y:auto}
.card{width:min(520px,100%);background:var(--panel);border-radius:18px;padding:1rem;border:1px solid rgba(74,222,128,.3);max-height:92dvh;overflow-y:auto}
.card h2{text-align:center;color:var(--warn);margin-bottom:.5rem}
.big{text-align:center;font-size:2rem}
.win-rank{text-align:center;color:var(--good);font-weight:800;margin:.4rem 0}
.lb-cur{text-align:center;color:var(--muted);font-weight:700}
.lb-table{margin:.6rem 0;max-height:40vh;overflow-y:auto}
.lb-table table{width:100%;border-collapse:collapse;font-size:.92rem}
.lb-table th,.lb-table td{padding:.45rem .3rem;border-bottom:1px solid rgba(255,255,255,.08);font-weight:700}
.lb-table th{color:var(--muted);position:sticky;top:0;background:var(--panel)}
.lb-table tr.me td{color:var(--warn)}
ol{margin:.75rem 0 .75rem 1.2rem;line-height:1.65;font-weight:700}


/* P1.2 win celebrate */
#overlay-win:not(.hidden){background:rgba(4,10,18,.86)}
#overlay-win:not(.hidden) .card{border:2px solid rgba(251,191,36,.55);box-shadow:0 0 0 3px rgba(251,191,36,.35),0 18px 48px rgba(0,0,0,.5)}
#overlay-win:not(.hidden) #win-title,#overlay-win:not(.hidden) h2{font-size:clamp(1.9rem,7vw,2.75rem)!important;color:#fde68a!important;font-weight:900;letter-spacing:.04em;text-shadow:0 2px 12px rgba(251,191,36,.5)}
#overlay-win:not(.hidden) #win-msg{font-size:clamp(1.15rem,3.8vw,1.4rem);font-weight:800}


/* batch4 residual — board / planes / dice readability */
.base .dot{width:1.75rem;height:1.75rem;border:3px solid #fff;box-shadow:0 0 0 2px rgba(0,0,0,.25)}
.actions .btn{min-height:64px;font-size:1.05rem}
html.elder-mode .dice-btn{width:min(230px,64vw);height:min(230px,64vw)}
html.elder-mode .plane{width:88%;height:88%;border-width:4px}