/* 体素花园 —— 页面外壳样式。纯手写，无外部依赖。 */
:root{
  --panel:rgba(12,18,34,.66);
  --panel-2:rgba(16,24,44,.9);
  --line:rgba(255,255,255,.14);
  --line-2:rgba(255,255,255,.22);
  --text:#eef3ff;
  --muted:#a8b6d8;
  --accent:#7ee08a;
  --accent-2:#ffd166;
  --danger:#ff7a7a;
  --radius:14px;
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box}
html,body{
  height:100%;margin:0;overflow:hidden;background:#080c1c;color:var(--text);
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  overscroll-behavior:none;-webkit-user-select:none;user-select:none;
  -webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;
}
#gl{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}
#gl.dragging{cursor:grabbing}

/* ---------- 顶栏 ---------- */
#topbar{
  position:fixed;left:0;right:0;top:0;z-index:10;
  padding:calc(var(--safe-t) + 10px) 12px 10px;
  display:flex;align-items:center;gap:10px;
  background:linear-gradient(180deg,rgba(6,10,22,.72),rgba(6,10,22,0));
  pointer-events:none;
}
#topbar>*{pointer-events:auto}
.brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:650;letter-spacing:.01em;
  background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:6px 13px 6px 9px;backdrop-filter:blur(9px)}
.brand svg{width:17px;height:17px;color:var(--accent)}
.chips{display:flex;gap:7px;margin-left:auto}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);
  background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:6px 11px;backdrop-filter:blur(9px);
  font-variant-numeric:tabular-nums}
.chip b{color:var(--text);font-weight:650}
.chip.warm b{color:var(--accent-2)}
.chip.hot{color:#fff;border-color:rgba(255,209,102,.6);background:rgba(255,180,60,.18)}
.tools{display:flex;gap:7px}
.iconbtn{
  width:36px;height:36px;display:flex;align-items:center;justify-content:center;
  background:var(--panel);border:1px solid var(--line);border-radius:11px;color:var(--text);
  backdrop-filter:blur(9px);cursor:pointer;padding:0;font-family:inherit;
}
.iconbtn:hover{background:var(--panel-2)}
.iconbtn.off{color:#6b7794}
.iconbtn svg{width:18px;height:18px}

/* ---------- 游戏 HUD ---------- */
#hud{
  position:fixed;z-index:9;left:50%;top:calc(var(--safe-t) + 62px);transform:translateX(-50%);
  display:none;align-items:center;gap:10px;padding:8px 16px;
  background:var(--panel-2);border:1px solid var(--line);border-radius:999px;backdrop-filter:blur(10px);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
#hud.on{display:flex}
#hud .hud-time{font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;min-width:44px;text-align:center}
#hud .hud-time.low{color:var(--danger)}
#hud .hud-sep{width:1px;height:18px;background:var(--line-2)}
#hud .hud-score{font-size:13px;color:var(--muted)}
#hud .hud-score b{color:var(--text);font-size:16px;font-variant-numeric:tabular-nums}
#hud .hud-combo{font-size:12.5px;color:var(--accent-2);font-weight:650;opacity:0;transition:opacity .2s}
#hud .hud-combo.on{opacity:1}

/* ---------- 底部工具栏 ---------- */
#toolbar{
  position:fixed;z-index:10;left:50%;bottom:calc(var(--safe-b) + 12px);transform:translateX(-50%);
  display:flex;gap:6px;padding:7px;background:var(--panel);border:1px solid var(--line);
  border-radius:18px;backdrop-filter:blur(11px);box-shadow:0 12px 34px rgba(0,0,0,.4);
  max-width:calc(100vw - 16px);overflow-x:auto;scrollbar-width:none;
}
#toolbar::-webkit-scrollbar{display:none}
#toolbar button{
  flex:0 0 auto;min-width:60px;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:7px 10px;border:1px solid transparent;border-radius:12px;background:transparent;
  color:var(--muted);font-size:11px;font-family:inherit;cursor:pointer;transition:background .15s,color .15s;
}
#toolbar button svg{width:20px;height:20px}
#toolbar button:hover{background:rgba(255,255,255,.07);color:var(--text)}
#toolbar button.on{background:rgba(126,224,138,.16);border-color:rgba(126,224,138,.45);color:#dcffe0}
#toolbar button.on svg{color:var(--accent)}
#toolbar button.active{background:rgba(126,224,138,.16);border-color:rgba(126,224,138,.45);color:#dcffe0}

/* ---------- 提示条 ---------- */
#toast{
  position:fixed;z-index:12;left:50%;top:calc(var(--safe-t) + 116px);transform:translate(-50%,-8px);
  padding:9px 16px;background:var(--panel-2);border:1px solid var(--line);border-radius:999px;
  font-size:13px;opacity:0;transition:opacity .25s,transform .25s;pointer-events:none;max-width:86vw;text-align:center;
}
#toast.on{opacity:1;transform:translate(-50%,0)}

/* ---------- 浮字 ---------- */
#popups{position:fixed;inset:0;z-index:8;pointer-events:none;overflow:hidden}
.pop{position:absolute;font-size:16px;font-weight:750;text-shadow:0 2px 8px rgba(0,0,0,.7);
  transform:translate(-50%,-50%);will-change:transform,opacity;white-space:nowrap}
.pop.good{color:#a9ffb4}.pop.gold{color:#ffd166}.pop.bad{color:#ff9a9a}.pop.info{color:#cfe0ff}

/* ---------- 遮罩 / 弹窗 ---------- */
#overlay{
  position:fixed;inset:0;z-index:20;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(4,7,16,.62);backdrop-filter:blur(5px);
}
#overlay.on{display:flex}
.sheet{
  width:100%;max-width:392px;background:var(--panel-2);border:1px solid var(--line);border-radius:20px;
  padding:24px 22px;box-shadow:0 24px 60px rgba(0,0,0,.5);text-align:center;
  max-height:86vh;overflow:auto;
}
.sheet h2{margin:0 0 8px;font-size:20px;letter-spacing:.01em}
.sheet p{margin:0 0 6px;font-size:13.5px;line-height:1.75;color:var(--muted)}
.sheet .big{font-size:44px;font-weight:800;color:var(--accent-2);margin:10px 0 2px;font-variant-numeric:tabular-nums}
.sheet .sub{font-size:12.5px;color:var(--muted);margin-bottom:16px}
.sheet ul{margin:6px 0 16px;padding:0;list-style:none;text-align:left}
.sheet li{font-size:13px;line-height:1.6;color:var(--muted);padding:5px 0;display:flex;gap:9px;align-items:flex-start}
.sheet li b{color:var(--text);font-weight:600;flex:0 0 auto}
.sheet .kbd{display:inline-block;background:rgba(255,255,255,.1);border:1px solid var(--line-2);
  border-radius:6px;padding:1px 7px;font-size:12px;color:var(--text)}
.btns{display:flex;gap:9px;justify-content:center;flex-wrap:wrap;margin-top:4px}
.sheet button{
  padding:10px 20px;border-radius:11px;border:1px solid var(--line-2);background:rgba(255,255,255,.07);
  color:var(--text);font-size:13.5px;font-weight:600;font-family:inherit;cursor:pointer;min-width:104px;
}
.sheet button:hover{background:rgba(255,255,255,.13)}
.sheet button.primary{background:linear-gradient(135deg,#4fbf63,#2f9a52);border-color:transparent;color:#04140a}
.sheet button.primary:hover{filter:brightness(1.08)}

/* ---------- 载入 / 不支持 ---------- */
#loading{
  position:fixed;inset:0;z-index:30;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:radial-gradient(120% 90% at 50% 0%,#1d3b6b 0%,#0b1330 55%,#070a18 100%);
  transition:opacity .45s;font-size:13.5px;color:var(--muted)
}
#loading.gone{opacity:0;pointer-events:none}
.spinner{width:30px;height:30px;border-radius:50%;border:3px solid rgba(255,255,255,.18);border-top-color:var(--accent);
  animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
#fallback{position:fixed;inset:0;z-index:31;display:none;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;padding:28px;text-align:center;background:#0b1330}
#fallback.on{display:flex}
#fallback h2{margin:0;font-size:18px}
#fallback p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.7;max-width:340px}

@media (max-width:560px){
  .brand{font-size:13px;padding:5px 11px 5px 8px}
  .chip{font-size:12px;padding:5px 9px}
  #toolbar button{min-width:54px;padding:6px 8px}
  #hud{top:calc(var(--safe-t) + 58px)}
}
@media (max-height:430px){
  #toolbar button span{display:none}
}