:root{--panel:rgba(255,255,255,.92);--ink:#10131c;--accent:#0a84c6;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--panel:rgba(20,24,36,.92);--ink:#eef2fb;--accent:#4cc9f0}}
:root[data-theme="dark"]{--panel:rgba(20,24,36,.92);--ink:#eef2fb;--accent:#4cc9f0}
html,body{height:100%;margin:0;background:#080b16;overflow:hidden;font-family:system-ui,-apple-system,"Segoe UI",sans-serif}
#c{width:100%;height:100%;display:block;outline:none;touch-action:none}
#hud{position:fixed;top:env(safe-area-inset-top,0px);left:0;right:0;text-align:center;padding:12px;color:#fff;font-weight:800;font-size:34px;letter-spacing:4px;text-shadow:0 2px 10px #000;pointer-events:none}
#hud small{display:block;font-size:12px;letter-spacing:2px;opacity:.7;font-weight:600}
#diff{order:1;margin:auto 0 18px;display:flex;gap:2px;padding:3px;border:1px solid rgba(76,201,240,.45);border-radius:999px;background:rgba(8,14,30,.55);backdrop-filter:blur(6px);box-shadow:0 0 14px rgba(76,201,240,.18)}
#hud{transition:opacity .3s}
.menu #hud{opacity:0}
.seg{background:transparent;color:#a9c9e8;border:0;border-radius:999px;padding:8px 18px;font-size:13px;letter-spacing:2px;text-transform:uppercase;text-shadow:none}
.seg.on{background:#4cc9f0;color:#041018;box-shadow:0 0 16px rgba(76,201,240,.6)}
.seg:focus-visible{outline:2px solid #fff;outline-offset:1px}
#tools{position:fixed;top:env(safe-area-inset-top,0px);right:0;display:flex;gap:8px;padding:12px;z-index:5}
.tool{width:40px;height:40px;padding:0;display:grid;place-items:center;background:rgba(8,14,30,.55);color:#7fe3ff;border:1px solid rgba(76,201,240,.4);border-radius:12px;backdrop-filter:blur(6px);box-shadow:0 0 12px rgba(76,201,240,.18)}
.tool:hover{background:rgba(76,201,240,.18)}
.tool.off{opacity:.4}
#power{position:fixed;left:calc(env(safe-area-inset-left,0px) + 18px);bottom:calc(env(safe-area-inset-bottom,0px) + 18px);width:min(240px,46vw);--pc:#4cc9f0;cursor:pointer;transition:opacity .3s;z-index:4}
.menu #power{opacity:0;pointer-events:none}
#pbar{height:10px;border:1px solid rgba(76,201,240,.45);border-radius:999px;background:rgba(8,14,30,.55);backdrop-filter:blur(6px);overflow:hidden}
#pfill{display:block;height:100%;width:0;background:var(--pc);box-shadow:0 0 12px var(--pc);border-radius:999px;transition:width .15s linear,background .2s}
#plabel{margin-top:6px;font-size:11px;font-weight:700;letter-spacing:2px;color:#bfe9ff;text-shadow:0 1px 6px #000}
#power[data-s="ready"] #pbar{border-color:var(--pc);animation:ready 1s ease-in-out infinite}
#power[data-s="armed"] #pbar{border-color:var(--pc);box-shadow:0 0 16px var(--pc)}
#power[data-s="ready"] #plabel,#power[data-s="armed"] #plabel{color:var(--pc)}
@keyframes ready{50%{box-shadow:0 0 18px var(--pc)}}
#aipower{position:fixed;left:calc(env(safe-area-inset-left,0px) + 18px);top:calc(env(safe-area-inset-top,0px) + 18px);width:min(200px,38vw);--pc:#ff6b7a;transition:opacity .3s;z-index:4;pointer-events:none}
.menu #aipower{opacity:0}
#abar{height:8px;border:1px solid rgba(255,107,122,.5);border-radius:999px;background:rgba(8,14,30,.55);backdrop-filter:blur(6px);overflow:hidden}
#afill{display:block;height:100%;width:0;background:var(--pc);box-shadow:0 0 10px var(--pc);border-radius:999px;transition:width .15s linear}
#alabel{margin-top:6px;font-size:11px;font-weight:700;letter-spacing:2px;color:#ffc4ca;text-shadow:0 1px 6px #000}
#aipower[data-s="armed"] #abar{border-color:var(--pc);box-shadow:0 0 16px var(--pc)}
#aipower[data-s="armed"] #alabel{color:var(--pc)}
#flash{position:fixed;inset:0;pointer-events:none;opacity:0;z-index:3;background:radial-gradient(circle at 50% var(--fy,85%),var(--fc,rgba(255,170,60,.6)),transparent 65%)}
#flash.go{animation:flash .5s ease-out}
@keyframes flash{0%{opacity:1}100%{opacity:0}}
.tool svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
#msg{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;padding:calc(env(safe-area-inset-top,0px) + 11vh) 20px calc(env(safe-area-inset-bottom,0px) + 15vh);box-sizing:border-box;pointer-events:none;opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s}
.menu #msg{opacity:1;visibility:visible}
#panel{display:contents;color:#fff;text-align:center;pointer-events:none;text-shadow:0 2px 12px #000,0 0 26px rgba(0,0,0,.7)}
#ptext{max-width:520px}
#panel h1{margin:0;font-size:clamp(26px,6vw,54px);font-weight:800;letter-spacing:.18em;text-transform:uppercase;white-space:nowrap;background:linear-gradient(180deg,#e6fcff,#4cc9f0);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none;filter:drop-shadow(0 0 14px rgba(76,201,240,.65))}
#panel p{margin:10px 0 0;font-size:13px;letter-spacing:2px;text-transform:uppercase;line-height:1.6;color:#bfe9ff;opacity:.85}
#diff,#go{pointer-events:auto}
.keys{order:3;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:#a9c9e8;opacity:.85}
kbd{display:inline-block;min-width:22px;padding:2px 7px;margin:0 3px;border:1px solid rgba(127,227,255,.4);border-bottom-width:2px;border-radius:6px;background:rgba(8,14,30,.55);color:#bfeaff;font:600 12px system-ui,sans-serif;letter-spacing:0}
@media (hover:none){.keys{display:none}}
#go{order:2;margin-bottom:16px;background:#4cc9f0;color:#041018;border:1px solid #4cc9f0;border-radius:999px;font-size:18px;font-weight:800;letter-spacing:6px;padding:12px 38px;text-shadow:none;box-shadow:0 0 22px rgba(76,201,240,.55);animation:glow 2s ease-in-out infinite}
#go:hover{background:#7fdcff}
@keyframes glow{50%{box-shadow:0 0 36px rgba(76,201,240,.9)}}
.menu #pau{display:none}
#pause{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:rgba(4,6,14,.72);backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;z-index:6;text-align:center;color:#fff}
#pause.on{opacity:1;visibility:visible}
#pause h1{margin:0;font-size:clamp(26px,6vw,48px);font-weight:800;letter-spacing:.18em;text-transform:uppercase;background:linear-gradient(180deg,#e6fcff,#4cc9f0);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 14px rgba(76,201,240,.65))}
#pause p{margin:0;font-size:13px;letter-spacing:2px;text-transform:uppercase;color:#bfe9ff;opacity:.85}
.pbtn{background:#4cc9f0;color:#041018;border:1px solid #4cc9f0;border-radius:999px;font-size:16px;font-weight:800;letter-spacing:4px;padding:11px 32px;box-shadow:0 0 20px rgba(76,201,240,.5);cursor:pointer}
.pbtn:hover{background:#7fdcff}
.pbtn.ghost{background:rgba(8,14,30,.55);color:#bfe9ff;border-color:rgba(76,201,240,.5);box-shadow:none;font-size:13px;padding:9px 26px}
.pbtn.ghost:hover{background:rgba(76,201,240,.18)}
button{background:var(--accent);color:#06101a;border:0;border-radius:10px;padding:10px 22px;font-size:16px;font-weight:700;cursor:pointer}