:root{
  --bg:#14100d; --panel:#211a15; --panel2:#2b221b; --line:#3d3026;
  --gold:#c49a52; --ink:#efe3cb; --muted:#a8977e; --red:#b5483a; --green:#6f9a5a;
  --s:1;
  --st:env(safe-area-inset-top,0px); --sb:env(safe-area-inset-bottom,0px);
  --sl:env(safe-area-inset-left,0px); --sr:env(safe-area-inset-right,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,"PingFang TC","Noto Sans CJK TC","Heiti TC",sans-serif;
  overscroll-behavior:none;-webkit-text-size-adjust:100%}
body{position:fixed;inset:0;overflow:hidden}
.hidden{display:none!important}
.screen{display:none;position:absolute;inset:0}
.screen.active{display:block}
#home,#settings{overflow-y:auto;-webkit-overflow-scrolling:touch}
.home-inner{max-width:560px;margin:0 auto;
  padding:calc(var(--st) + 16px) calc(var(--sr) + 18px) calc(var(--sb) + 24px) calc(var(--sl) + 18px);
  display:flex;flex-direction:column;gap:14px}
.brand{display:flex;align-items:center;gap:14px;margin:6px 0 4px}
.logo{width:64px;height:64px;border-radius:16px}
h1{margin:0;font-size:30px;letter-spacing:4px;color:var(--ink)}
.h-small{font-size:24px;letter-spacing:2px}
h2{margin:0 0 8px;font-size:18px}
.sub{margin:2px 0 0;color:var(--gold);letter-spacing:2px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:10px}
.card summary{font-weight:600;font-size:16px;cursor:pointer}
.row-between{display:flex;justify-content:space-between;align-items:center;gap:10px}
.label{font-weight:600}
.pill{font-size:14px;padding:4px 10px;border-radius:999px;background:var(--panel2);color:var(--muted);border:1px solid var(--line)}
.pill.ok{color:#d8f0c8;background:#2c3d24;border-color:#4b6b3c}
.muted{color:var(--muted)} .small{font-size:14px} .tiny{font-size:12px} .center{text-align:center}
.steps{margin:0;padding-left:22px;line-height:1.7;font-size:15px}
.btn{appearance:none;border:1px solid var(--line);background:var(--panel2);color:var(--ink);
  font:inherit;font-size:17px;border-radius:14px;min-height:50px;padding:12px 16px;text-align:center;
  display:flex;align-items:center;justify-content:center;position:relative;user-select:none;-webkit-user-select:none}
.btn:active{filter:brightness(1.25)}
.btn.big{min-height:58px;font-size:19px;font-weight:600}
.btn.small{min-height:44px;font-size:15px;padding:8px 14px}
.btn.primary{background:linear-gradient(#c9a25d,#a47b39);color:#1b130b;border-color:#d8b777}
.btn.primary:disabled{background:var(--panel2);color:var(--muted);border-color:var(--line)}
.btn.danger{color:#f2b2a8;border-color:#5b2d26}
.file-btn input{position:absolute;inset:0;opacity:0;width:100%;height:100%}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.status{margin:6px 0 0;padding-left:18px;line-height:1.6;font-size:14px}
.ok{color:#9fd08a}.wip{color:#e0b36a}
.field{display:flex;flex-direction:column;gap:6px;font-weight:600}
select{font:inherit;font-size:16px;min-height:46px;border-radius:12px;background:var(--panel2);color:var(--ink);border:1px solid var(--line);padding:0 10px}
.progress{position:relative;height:28px;border-radius:10px;background:var(--panel2);overflow:hidden}
.progress .bar{position:absolute;left:0;top:0;bottom:0;width:0;background:#7c6136;transition:width .15s}
.progress .ptext{position:relative;display:block;text-align:center;line-height:28px;font-size:13px}

/* ---------- 遊戲畫面 ---------- */
#play.active{display:grid;
  grid-template-columns:1fr 1fr;
  grid-template-rows:auto auto 1fr;
  grid-template-areas:"top top" "stage stage" "lp rp";
  padding:var(--st) var(--sr) var(--sb) var(--sl);
  touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
.topbar{grid-area:top;display:flex;align-items:center;gap:8px;padding:6px 10px;min-height:48px}
.ttitle{flex:1;text-align:center;color:var(--gold);letter-spacing:3px;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tbtn{appearance:none;font:inherit;font-size:14px;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:10px;min-height:40px;min-width:64px;padding:0 10px}
.tbtn:active{filter:brightness(1.3)}
.stage{grid-area:stage;position:relative;width:100%;aspect-ratio:4/3;background:#000}
#screen{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;image-rendering:pixelated;image-rendering:crisp-edges;background:#000}
#screen.smooth{image-rendering:auto}
.overlay{position:absolute;inset:0;display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;background:rgba(0,0,0,.7);font-size:15px;color:var(--muted);text-align:center;padding:16px}
.spinner{width:34px;height:34px;border-radius:50%;border:3px solid #444;border-top-color:var(--gold);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.pad{display:flex;align-items:center;justify-content:center;padding:10px;min-height:0}
.left-pad{grid-area:lp}
.right-pad{grid-area:rp;flex-direction:column;gap:14px}

.dpad{position:relative;width:calc(168px*var(--s));height:calc(168px*var(--s));border-radius:50%;
  background:radial-gradient(circle,#2e251d 0 58%,#231c16 59%);border:1px solid var(--line);touch-action:none}
.dir{position:absolute;width:34%;height:34%;display:flex;align-items:center;justify-content:center;color:#cdbb9a;font-size:calc(20px*var(--s));border-radius:12px;pointer-events:none}
.dir.up{left:33%;top:2%}.dir.down{left:33%;bottom:2%}.dir.left{left:2%;top:33%}.dir.right{right:2%;top:33%}
.dir.on{background:rgba(196,154,82,.35);color:#fff}
.dot{position:absolute;left:50%;top:50%;width:22%;height:22%;margin:-11% 0 0 -11%;border-radius:50%;background:#3a2f25;pointer-events:none}

.abxy{position:relative;width:calc(176px*var(--s));height:calc(150px*var(--s))}
.key{appearance:none;font:inherit;color:var(--ink);border:1px solid #4a3b2e;background:#2e251d;border-radius:50%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.1;touch-action:none;padding:0}
.key small{font-size:11px;color:var(--muted)}
.key.down{background:#6b5330;border-color:var(--gold);color:#fff}
.abxy .key{position:absolute}
.k-ok{width:calc(78px*var(--s));height:calc(78px*var(--s));right:0;top:calc(36px*var(--s));font-size:calc(19px*var(--s));font-weight:700;background:#5a3b22;border-color:#a77a43}
.k-cancel{width:calc(70px*var(--s));height:calc(70px*var(--s));left:calc(8px*var(--s));bottom:0;font-size:calc(16px*var(--s));background:#3a2420;border-color:#7a3f35}
.k-y{width:calc(50px*var(--s));height:calc(50px*var(--s));left:calc(2px*var(--s));top:calc(4px*var(--s));font-size:14px}
.k-n{width:calc(48px*var(--s));height:calc(48px*var(--s));left:calc(60px*var(--s));top:0;font-size:14px}
.k-space{width:calc(150px*var(--s));height:46px;border-radius:14px;font-size:15px}

.sheet{position:absolute;left:0;right:0;bottom:0;z-index:20;background:rgba(24,19,15,.97);border-top:1px solid var(--line);
  padding:12px calc(var(--sr) + 12px) calc(var(--sb) + 12px) calc(var(--sl) + 12px);border-radius:18px 18px 0 0}
.sheet-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.key.s{border-radius:12px;min-height:48px;font-size:16px}
.typer{display:flex;gap:8px;margin-top:10px}
.typer input{flex:1;min-width:0;font-size:16px;border-radius:12px;border:1px solid var(--line);background:#0f0c0a;color:var(--ink);padding:0 12px;min-height:44px}
.toast{position:absolute;left:50%;top:calc(var(--st) + 56px);transform:translateX(-50%);z-index:30;background:rgba(0,0,0,.85);border:1px solid var(--line);padding:10px 16px;border-radius:12px;font-size:14px;max-width:86vw;text-align:center}

/* 橫向：方向鍵在左、按鍵在右、畫面置中 */
@media (orientation:landscape){
  #play.active{grid-template-columns:minmax(150px,1fr) auto minmax(150px,1fr);
    grid-template-rows:auto 1fr;grid-template-areas:"lp top rp" "lp stage rp"}
  .topbar{padding:4px 6px;min-height:42px}
  .tbtn{min-height:36px}
  .stage{height:calc(100dvh - var(--st) - var(--sb) - 46px);width:auto;max-width:calc(100vw - var(--sl) - var(--sr) - 300px);align-self:start}
  .left-pad{align-items:flex-end;padding-bottom:calc(14px + var(--sb))}
  .right-pad{justify-content:flex-end;padding-bottom:calc(14px + var(--sb))}
  .sheet{left:50%;right:auto;width:min(640px,96vw);transform:translateX(-50%)}
  .sheet-grid{grid-template-columns:repeat(10,1fr)}
}