:root{--lime:#d9f578;--ink:#090f16;--muted:#a4b1b9;--white:#f7f4ed;--red:#f45461;--cyan:#7cd8ea}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--ink);color:var(--white);font-family:Inter,Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:wait}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--lime);outline-offset:5px}[hidden]{display:none!important}#arena{position:fixed;inset:0;width:100%;height:100%;display:block}.grain{position:fixed;inset:0;pointer-events:none;background:linear-gradient(90deg,#070c14e8 0%,#070c1488 38%,transparent 72%),linear-gradient(0deg,#070c14b0,transparent 30%)}body.playing .grain{background:linear-gradient(0deg,#070c14a0,transparent 16%,transparent 80%,#070c1480)}.topbar{position:absolute;top:0;left:0;right:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:27px 40px;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:900;letter-spacing:2px}.brand svg{width:34px;height:34px;color:var(--lime)}.brand span{border-left:1px solid #ffffff2a;margin-left:10px;padding-left:20px;font-size:9px;letter-spacing:2px;color:var(--muted);font-weight:500}.top-actions{display:flex;align-items:center;gap:12px}.connection{font-size:9px;letter-spacing:1.5px;color:#c2ccd0;margin-right:15px;display:flex;align-items:center;gap:8px}.connection i,.waiting i{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 9px #d9f57880;display:inline-block}.icon-button{color:#ced4d7;background:#0e172280;border:1px solid #ffffff20;min-height:36px;padding:0 12px;font-size:9px;font-weight:bold;letter-spacing:1px;border-radius:4px}.icon-button:hover{background:#263340}.intro{position:absolute;left:8%;top:50%;transform:translateY(-45%);max-width:510px}.eyebrow{display:flex;align-items:center;gap:10px;letter-spacing:2.5px;font-size:10px;font-weight:700;color:var(--lime)}.eyebrow>span{width:26px;height:2px;background:var(--lime)}h1{font-size:clamp(66px,8.2vw,120px);line-height:.92;letter-spacing:-5px;margin:24px 0 25px;font-weight:900}h1 em{font-style:normal;color:var(--lime)}.lede{font-size:17px;line-height:1.65;color:#c7cdd0;margin:0 0 27px}.intro-actions{display:flex;flex-direction:column;gap:10px;width:330px}.button{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 21px;min-height:55px;border-radius:4px;border:1px solid transparent;letter-spacing:1px;font-weight:800;font-size:11px;transition:background .15s,transform .15s}.button span{font-size:20px;font-weight:400}.button:hover{transform:translateY(-1px)}.primary{background:var(--lime);color:#182019}.primary:hover{background:#e7ffa1}.secondary{background:#111c2899;border-color:#ffffff38;color:#eef1e9}.secondary:hover{background:#243242}.small-note{font-size:11px;color:var(--muted);line-height:1.7;max-width:350px}.text-button{border:0;background:none;color:#dbe1df;font-size:10px;letter-spacing:1.5px;padding:12px 0;font-weight:700}.text-button span{margin-left:20px;color:var(--lime)}.text-button:hover{color:var(--lime)}.intro-facts{display:flex;gap:27px;margin-top:25px}.intro-facts span{font-size:8px;letter-spacing:1.6px;color:#b4c1c6;display:flex;gap:8px;align-items:center}.intro-facts b{font-size:9px;color:#e1e8e8}.fighter-chip{position:absolute;right:6%;bottom:15%;padding-left:18px;border-left:2px solid var(--lime);display:flex;flex-direction:column;gap:10px;text-shadow:0 2px 15px #000}.fighter-chip strong{font-size:24px;letter-spacing:1px}.fighter-chip>span:last-child{font-size:11px;color:#bbc6cf}.lobby-footer{position:absolute;bottom:25px;left:40px;right:40px;display:flex;justify-content:space-between;color:#73848e;font-size:8px;letter-spacing:2px}.hud{position:absolute;top:106px;left:5%;right:5%;display:grid;grid-template-columns:1fr 150px 1fr;gap:50px;pointer-events:none}.fighter-info{max-width:420px}.rival{justify-self:end;width:100%}.fighter-label{display:flex;justify-content:space-between;font-size:11px;letter-spacing:1.5px;font-weight:700;margin-bottom:10px}.rival .fighter-label{flex-direction:row-reverse}.health{height:7px;border-radius:2px;overflow:hidden;background:#26323e}.health div{width:100%;height:100%;background:var(--lime);transition:width .13s linear}.rival .health div{background:var(--red);margin-left:auto}.stamina{height:3px;background:#26323e;margin-top:7px;overflow:hidden}.stamina div{height:100%;background:#82d6e7;transition:width .13s linear}.rival .stamina div{margin-left:auto}.meter-caption{display:block;font-size:7px;letter-spacing:2px;color:#9eaeb7;margin-top:7px}.rival .meter-caption{text-align:right}.clock{text-align:center}.clock span{font-size:8px;letter-spacing:2px;color:#b4c0c6}.clock strong{display:block;font-size:40px;line-height:1.3;font-variant-numeric:tabular-nums;letter-spacing:-1px}.clock small{font-size:8px;letter-spacing:2px;color:var(--lime)}.center-call{position:absolute;left:50%;top:43%;transform:translate(-50%,-50%);font-size:clamp(48px,8vw,100px);font-weight:900;letter-spacing:-3px;text-align:center;color:var(--lime);text-shadow:0 3px 30px #000;pointer-events:none;white-space:pre-line;line-height:1.1}.hit-label{position:absolute;top:57%;left:50%;transform:translateX(-50%);color:var(--lime);font-size:11px;font-weight:800;letter-spacing:3px;pointer-events:none}.reticle{position:absolute;top:50%;left:50%;width:5px;height:5px;border:1px solid #ffffff55;border-radius:50%;pointer-events:none}.fight-bottom{position:absolute;bottom:24px;left:32px;right:32px;display:flex;align-items:center;justify-content:space-between;gap:20px}.desktop-hints{display:flex;gap:19px}.desktop-hints span{font-size:8px;color:#a6b5c0;display:flex;align-items:center;gap:6px}.desktop-hints kbd{font-size:9px;color:#e9eee9;border:1px solid #ffffff30;border-radius:3px;padding:5px}.ping{font-size:9px;color:var(--muted);min-width:40px}.dialog-backdrop{position:fixed;inset:0;z-index:20;background:#040910b8;backdrop-filter:blur(10px);display:grid;place-items:center;padding:24px;overflow:auto}.dialog{position:relative;background:#111b26;border:1px solid #ffffff1c;border-radius:12px;width:min(440px,100%);padding:36px;box-shadow:0 25px 100px #0008;max-height:calc(100dvh - 48px);overflow:auto}.dialog h2{font-size:38px;line-height:1.04;letter-spacing:-1.5px;margin:18px 0 22px}.dialog p{font-size:13px;line-height:1.75;color:#aebcc6}.dialog .button{width:100%;margin-top:14px}.close{position:absolute;top:15px;right:16px;background:none;border:0;color:#a9bac5;font-size:27px;width:34px;height:34px}.dialog label{display:block;font-size:9px;letter-spacing:1.5px;font-weight:700;color:#afbcc4;margin:18px 0 8px}.dialog input:not([type=range]):not([type=checkbox]):not([type=color]),.dialog select{display:block;margin-top:9px;width:100%;padding:13px 12px;border:1px solid #ffffff24;border-radius:4px;background:#080f19;color:#e7eee9;font-size:13px;letter-spacing:0}.presets{display:flex;gap:6px}.presets button{flex:1;padding:11px 5px;background:#0b141f;border:1px solid #ffffff1c;color:#aab9c3;border-radius:4px;font-size:8px;letter-spacing:1px}.presets button.selected{border-color:var(--lime);color:var(--lime)}.field-row{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.field-row label{margin-top:15px}.field-row input{display:block;margin-top:10px;width:100%;height:32px;background:none;border:0;cursor:pointer;padding:0}.dialog input[type=range]{display:block;margin:12px 0;width:100%;accent-color:var(--lime)}.photo-field{border-top:1px solid #ffffff16;margin-top:20px}.photo-field p{font-size:10px}.photo-field label>span{font-size:9px;font-weight:400;letter-spacing:0;float:right}.dialog .check{display:flex;align-items:center;gap:8px;line-height:1.6;font-size:10px;letter-spacing:0;font-weight:400}.check input{accent-color:var(--lime)}.photo-field input[type=file]{font-size:10px!important}.waiting{display:flex;align-items:center;gap:10px;justify-content:center;margin-top:25px!important;font-size:11px!important}.result-stats{display:flex;gap:40px;margin:25px 0}.result-stats span{display:grid;gap:8px;font-size:9px;letter-spacing:1px;color:#aebbc5}.result-stats b{font-size:32px;color:var(--white)}.notice{position:fixed;bottom:85px;left:50%;transform:translateX(-50%);z-index:40;background:#152332;border:1px solid #7a8b9b50;padding:15px 20px;max-width:min(480px,90vw);border-radius:5px;font-size:12px;line-height:1.6;box-shadow:0 10px 40px #0008}.notice:empty{display:none}.fatal{position:fixed;inset:0;z-index:100;background:#090f16f5;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;text-align:center}.fatal p{max-width:500px;color:#adb9c3;line-height:1.7}.fatal a{background:var(--lime);color:#111;padding:14px 25px;border-radius:4px;margin-top:15px}.touch-controls{display:none}button{touch-action:manipulation}body.playing #arena{touch-action:none}
@media(max-width:1000px){.brand span{display:none}.connection{display:none}.intro{left:6%}.intro-facts{gap:15px}.desktop-hints{gap:10px}.desktop-hints span{font-size:0}.desktop-hints kbd{font-size:9px}.fighter-chip{right:4%;bottom:18%;max-width:220px}.hud{gap:25px;grid-template-columns:1fr 110px 1fr}.topbar{padding:22px 28px}}
@media(max-width:600px){.topbar{padding:18px 18px;gap:8px}.brand{font-size:17px;letter-spacing:1px;gap:5px}.brand svg{width:28px}.top-actions{gap:6px}.icon-button{font-size:8px;padding:0 9px;min-height:34px}.intro{left:25px;right:25px;top:49%;transform:translateY(-43%)}h1{font-size:76px;letter-spacing:-4px;margin:20px 0}.lede{font-size:15px;margin-bottom:20px}.intro-actions{width:100%;max-width:350px}.intro .small-note{max-width:310px}.intro-facts{gap:15px;margin-top:12px}.intro-facts span{font-size:7px;letter-spacing:.8px}.fighter-chip{display:none}.lobby-footer{left:22px;right:22px;font-size:7px;letter-spacing:1px}.lobby-footer>span:last-child{display:none}.grain{background:linear-gradient(90deg,#070c14e8,#070c1450),linear-gradient(0deg,#070c14,transparent 60%)}.hud{top:84px;left:18px;right:18px;gap:14px;grid-template-columns:1fr 70px 1fr}.fighter-label{font-size:8px;letter-spacing:.7px;gap:4px}.clock strong{font-size:30px}.clock span{font-size:7px;letter-spacing:.7px}.clock small{font-size:6px}.fight-bottom{bottom:15px;left:18px;right:18px}.desktop-hints{display:none}.dialog-backdrop{padding:15px}.dialog{padding:28px 22px;max-height:calc(100dvh - 30px)}.dialog h2{font-size:32px}.center-call{top:40%}.notice{bottom:75px}.text-button{font-size:9px}}
@media(pointer:coarse){.touch-controls:not([hidden]){display:flex;position:absolute;bottom:max(70px,env(safe-area-inset-bottom));left:18px;right:18px;justify-content:space-between;gap:16px;pointer-events:none}.touch-controls button{pointer-events:auto;touch-action:none;background:#0b1427c9;border:1px solid #ffffff36;color:#e9eeea;border-radius:50%;width:49px;height:49px;font-size:9px;font-weight:800;user-select:none;-webkit-user-select:none}.touch-controls button:active{background:#d9f578;color:#142012}.dpad{display:grid;grid-template-columns:repeat(3,42px);grid-template-rows:repeat(2,42px);align-self:end;gap:4px}.dpad button{width:42px;height:42px;font-size:19px}.dpad button:first-child{grid-column:2}.dpad button:nth-child(2){grid-column:1;grid-row:2}.dpad button:nth-child(3){grid-column:2;grid-row:2}.dpad button:nth-child(4){grid-column:3;grid-row:2}.touch-punches{display:grid;grid-template-columns:repeat(3,49px);gap:7px}.touch-punches button[data-punch=jab],.touch-punches button[data-punch=cross]{background:#d9f578dc;color:#142012}.desktop-hints{display:none}}
@media(max-height:660px) and (min-width:650px){.intro{top:53%}h1{font-size:67px;margin:13px 0}.lede{font-size:14px;margin-bottom:15px}.intro-facts{display:none}.intro .small-note{margin:8px 0}.button{min-height:44px;padding:10px 18px}.intro-actions{gap:8px}.fighter-chip{bottom:12%}.topbar{padding:15px 25px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.guard-meter{height:2px;margin-top:4px;background:#ffffff15;overflow:hidden}.guard-meter>div{height:100%;width:100%;background:#86bfe1;transition:width .12s linear}.stance-status{position:fixed;left:50%;bottom:92px;transform:translateX(-50%);color:#d9ed9c;font-size:10px;letter-spacing:.16em;pointer-events:none}.recovery{position:fixed;top:62%;left:50%;transform:translateX(-50%);width:min(320px,85vw);text-align:center;font-size:10px;letter-spacing:.1em;color:#e2ebec}.recovery>div{height:5px;background:#ffffff20;margin-top:14px}.recovery i{display:block;background:#dbf39e;height:100%;width:0}.scorecards{font-size:11px;line-height:1.8;color:#c7d79f}.control-list{font-size:12px;margin:22px 0}.control-list>div{display:grid;grid-template-columns:140px 1fr;gap:12px;padding:9px 0;border-bottom:1px solid #ffffff12}.control-list dt{color:#d9f578;font-size:10px}.control-list dd{margin:0;color:#b3bec8}.touch-punches [aria-pressed=true]{background:#d9f578;color:#111c21}.desktop-hints{flex-wrap:wrap;justify-content:center;row-gap:8px}.desktop-hints kbd{white-space:nowrap}@media(max-width:760px),(pointer:coarse){.stance-status{bottom:216px}.touch-punches{grid-template-rows:repeat(3,49px)}}

.rival .guard-meter>div{margin-left:auto}@media(max-width:370px) and (pointer:coarse){.touch-controls{left:12px!important;right:12px!important;gap:8px!important}.dpad{grid-template-columns:repeat(3,36px);grid-template-rows:repeat(2,36px)}.dpad button{width:36px;height:36px}.touch-punches{grid-template-columns:repeat(3,43px);grid-template-rows:repeat(3,43px);gap:5px}.touch-punches button{width:43px;height:43px}}

/* Mouse head movement stays distinct from footwork and punching. */
.head-control{position:fixed;left:32px;bottom:110px;display:flex;align-items:center;gap:14px;pointer-events:none;padding:12px 15px;background:#0c1722d9;border:1px solid #ffffff21;border-radius:10px;max-width:280px}
.head-track{position:relative;width:76px;height:58px;border:1px solid #a4b1b944;border-radius:38px;background:linear-gradient(transparent 49%,#ffffff14 50%,transparent 52%),linear-gradient(90deg,transparent 49%,#ffffff14 50%,transparent 52%);flex-shrink:0}
.head-track i{position:absolute;left:calc(50% - 5px);top:calc(50% - 5px);width:10px;height:10px;background:#d9f578;border-radius:50%;box-shadow:0 0 12px #d9f57844;transition:transform .07s linear}
.head-control strong{display:block;color:#d9f578;font-size:10px;letter-spacing:1.2px;margin-bottom:7px}.head-control span{display:block;color:#c0cbd1;font-size:8px;line-height:1.5;letter-spacing:.5px}.head-control small{display:block;color:#91a1ad;font-size:9px;margin-top:5px}.head-control.defending{border-color:#d9f57860}
.ring-actions{flex-wrap:wrap}body.playing #arena{cursor:crosshair}#mouseSensitivityValue{float:right;color:#d9f578}
@media(pointer:coarse){.head-control,.mouse-only{display:none!important}}
@media(max-width:760px){.head-control{left:18px;bottom:82px;padding:8px 10px;max-width:230px}.head-track{width:70px}.head-control span{font-size:7px}.ring-actions{gap:8px}}
@media(prefers-reduced-motion:reduce){.head-track i{transition:none}}
/* Refinement 3: onboarding, practice coaching, accessible controls. */
.games-link{font-size:9px;letter-spacing:1px;color:#b8c6d0;padding:12px 8px;white-space:nowrap}.games-link:hover{color:var(--lime)}
.ring-actions{display:flex;gap:17px;align-items:center;flex-shrink:0}.ring-actions .icon-button{min-height:40px}
.quick-controls{display:grid;gap:14px;margin:24px 0}.quick-controls>div{border-left:2px solid #d9f57866;padding-left:14px}.quick-controls strong{display:block;color:var(--lime);font-size:10px;letter-spacing:1px;margin-bottom:6px}.quick-controls span{font-size:12px;line-height:1.65;color:#bdc9d1;display:block}
.practice-dialog{width:min(500px,100%)}.dialog select{line-height:1.5;min-height:46px}.dialog button{min-height:42px}
.coach-tip{position:fixed;top:205px;left:50%;transform:translateX(-50%);padding:10px 16px;border:1px solid #d9f57838;background:#0a1425d6;backdrop-filter:blur(8px);border-radius:5px;font-size:11px;line-height:1.5;letter-spacing:.3px;color:#dce5df;max-width:min(480px,85vw);text-align:center;pointer-events:none}
.movement-dock{display:flex;flex-direction:column;align-self:end;gap:7px}.slip-controls{display:flex;gap:6px;justify-content:center}.touch-controls .slip-controls button{width:61px;height:35px;border-radius:7px;font-size:8px}
@media(max-width:700px){.games-link{display:none}.coach-tip{top:180px;font-size:10px;padding:8px 12px;width:max-content;max-width:85vw}.ring-actions{gap:13px}.control-list>div{grid-template-columns:105px 1fr}.control-list dt{line-height:1.6}}
@media(max-width:600px){.topbar{padding-top:max(14px,env(safe-area-inset-top))}.fight-bottom{bottom:max(12px,env(safe-area-inset-bottom))}.dialog-backdrop{padding-top:max(15px,env(safe-area-inset-top));padding-bottom:max(15px,env(safe-area-inset-bottom))}.intro{top:50%;transform:translateY(-45%)}.button{min-height:51px}}
@media(max-height:700px) and (max-width:600px){.intro{top:51%}h1{font-size:60px;margin:14px 0}.lede{font-size:13px;line-height:1.5;margin-bottom:15px}.intro-facts{display:none}.intro .small-note{font-size:10px}.intro-actions{gap:7px}.button{min-height:46px;padding:12px 17px}.lobby-footer{bottom:12px}.coach-tip{top:164px}}
@media(max-width:370px) and (pointer:coarse){.touch-controls .slip-controls button{width:52px;height:33px}}
@media(max-height:500px) and (pointer:coarse){body.playing .topbar{padding:7px 15px}.hud{top:55px}.coach-tip{top:130px}.touch-controls:not([hidden]){bottom:51px}.touch-punches{grid-template-columns:repeat(3,40px);gap:5px;grid-template-rows:repeat(3,40px)}.touch-punches button{width:40px;height:40px}.stance-status{bottom:54px}.fight-bottom{bottom:7px}.center-call{top:45%}}

/* Decorative HUD must not steal mouse presses or repeatedly reset head motion. */
body.playing .topbar,body.playing .fight-bottom{pointer-events:none}
body.playing .topbar button,body.playing .topbar a,body.playing .fight-bottom button{pointer-events:auto}