@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Rajdhani:wght@300;400;500;600;700&display=swap');
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0a12;--bg-glow:#1a1a2e;--bg-overlay:10,10,18;--al:#ff2d55;--ad:#00e5ff;--au:#76ff03;--ar:#ffab00;--text:#e0e0e8;--dim:#6a6a7a}
html,body{width:100%;height:100%;background:var(--bg);color:var(--text);font-family:'Rajdhani',sans-serif;overflow:hidden;user-select:none}

#menu{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;background:radial-gradient(ellipse at 50% 30%,var(--bg-glow) 0%,var(--bg) 70%);position:relative;z-index:100}
#egg-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:99}
#menu h1{cursor:pointer;font-family:'Orbitron',sans-serif;font-size:4rem;font-weight:900;letter-spacing:.15em;background:linear-gradient(135deg,var(--al),var(--ad),var(--au),var(--ar));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:.2em;animation:tp 3s ease-in-out infinite alternate}
@keyframes tp{0%{filter:brightness(1);transform:scale(1)}100%{filter:brightness(1.3);transform:scale(1.02)}}
#menu .sub{font-size:1.1rem;color:var(--dim);letter-spacing:.3em;text-transform:uppercase;margin-bottom:3rem}
.sec{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-bottom:2rem}
.sec h2{font-family:'Orbitron',sans-serif;font-size:.85rem;letter-spacing:.25em;color:var(--dim);text-transform:uppercase}
.row{display:flex;gap:.75rem}
.btn{font-family:'Orbitron',sans-serif;font-size:.9rem;font-weight:700;padding:.75rem 1.8rem;border:2px solid var(--dim);background:transparent;color:var(--text);cursor:pointer;letter-spacing:.1em;transition:all .2s;clip-path:polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%)}
.btn:hover{border-color:var(--ad);color:#fff;background:rgba(0,229,255,.08);transform:translateY(-2px)}
.mode-btn{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:1.2rem 2.2rem;min-width:150px}
.mode-label{font-size:1.15rem;font-weight:900;letter-spacing:.12em}
.mode-sub{font-size:.55rem;font-weight:400;color:var(--dim);letter-spacing:.06em;text-transform:uppercase}
.mode-classic:hover{border-color:var(--au);background:rgba(118,255,3,.06)}
.mode-strike:hover{border-color:var(--al);background:rgba(255,45,85,.06)}
.back-btn{margin-top:1rem;font-size:.7rem;padding:.5rem 1.5rem;border-color:rgba(255,255,255,.15)}
.info{color:var(--dim);font-size:.8rem;text-align:center;max-width:520px;line-height:1.6;margin-top:1.5rem}
.settings-btn{margin-top:1.5rem;font-size:.75rem;padding:.5rem 1.4rem}
.version{position:absolute;bottom:1rem;left:50%;transform:translateX(-50%);font-family:'Orbitron',sans-serif;font-size:.65rem;color:rgba(106,106,122,.4);letter-spacing:.15em}

#settings-panel{position:absolute;inset:0;z-index:110;display:none;align-items:center;justify-content:center;background:rgba(var(--bg-overlay),.92);backdrop-filter:blur(12px)}
#settings-panel.show{display:flex}
.stg-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);padding:2rem 2.5rem;text-align:center;max-width:480px;width:90%;max-height:90vh;overflow-y:auto;animation:tutIn .3s ease-out}
.stg-card h2{font-family:'Orbitron',sans-serif;font-size:1.3rem;letter-spacing:.2em;margin-bottom:1.5rem;background:linear-gradient(135deg,var(--al),var(--ad),var(--au),var(--ar));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stg-section{margin-bottom:1.8rem}
.stg-section h3{font-family:'Orbitron',sans-serif;font-size:.7rem;letter-spacing:.2em;color:var(--dim);text-transform:uppercase;margin-bottom:.8rem}

.bg-opts{display:flex;gap:.8rem;justify-content:center}
.bg-opt{background:transparent;border:2px solid rgba(255,255,255,.1);padding:.6rem .8rem;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:.4rem;transition:all .2s;border-radius:4px}
.bg-opt:hover{border-color:rgba(255,255,255,.3)}
.bg-opt.active{border-color:var(--ad);box-shadow:0 0 12px rgba(0,229,255,.15)}
.bg-opt span{font-family:'Orbitron',sans-serif;font-size:.6rem;color:var(--dim);letter-spacing:.1em}
.bg-opt.active span{color:var(--ad)}
.bg-preview{width:48px;height:32px;border-radius:3px}
.bg-prev-default{background:linear-gradient(180deg,#0a0a18,#0d0d24,#0a0a18)}
.bg-prev-red{background:linear-gradient(180deg,#120a0a,#180d0f,#120a0a)}
.bg-prev-green{background:linear-gradient(180deg,#0a120c,#0d180f,#0a120c)}

.kb-grid{display:flex;flex-direction:column;gap:.5rem;margin-bottom:.6rem}
.kb-row{display:flex;align-items:center;justify-content:center;gap:.6rem}
.kb-dir{font-family:'Orbitron',sans-serif;font-size:.7rem;font-weight:700;width:5.5rem;text-align:right;letter-spacing:.08em}
.kb-dir.al{color:var(--al)}.kb-dir.ad{color:var(--ad)}.kb-dir.au{color:var(--au)}.kb-dir.ar{color:var(--ar)}
.kb-key{font-family:'Orbitron',sans-serif;font-size:.8rem;font-weight:700;width:3.5rem;height:2.2rem;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.15);color:var(--text);cursor:pointer;border-radius:3px;transition:all .2s}
.kb-key:hover{border-color:var(--ad);background:rgba(0,229,255,.06)}
.kb-key.listening{border-color:var(--au);background:rgba(118,255,3,.08);animation:kbPulse 1s ease-in-out infinite}
@keyframes kbPulse{0%,100%{box-shadow:0 0 4px rgba(118,255,3,.2)}50%{box-shadow:0 0 12px rgba(118,255,3,.4)}}
.kb-hint{font-size:.65rem;color:rgba(255,255,255,.2);margin-bottom:.6rem}
.stg-reset{font-size:.65rem;padding:.4rem 1rem;margin-bottom:.5rem}
.stg-close{margin-top:.5rem}
.info kbd{background:rgba(255,255,255,.1);padding:.15em .5em;border-radius:3px;font-family:'Rajdhani',sans-serif;font-size:.85rem}

#game{display:none;width:100%;height:100vh;position:relative;background:var(--bg);overflow:hidden}
#gc{position:absolute;top:0;left:0;width:100%;height:100%}
.hud{position:absolute;top:0;left:50%;transform:translateX(-50%);width:500px;display:flex;justify-content:space-between;align-items:flex-start;padding:.8rem 0;pointer-events:none;z-index:10}
.hud-l{display:flex;flex-direction:column;align-items:flex-start;padding-right:1rem}
.hud-r{display:flex;flex-direction:column;align-items:flex-end;padding-left:1rem}
#hs{font-family:'Orbitron',sans-serif;font-size:1.6rem;font-weight:900}
#hc{font-family:'Orbitron',sans-serif;font-size:1rem;color:var(--ad);transition:all .15s}
#hc.big{font-size:1.3rem;color:var(--au)}
#ha{font-family:'Orbitron',sans-serif;font-size:1.2rem;text-align:right}
#hsong{font-size:.75rem;color:var(--dim);text-align:right}
#hlive{font-size:.7rem;color:var(--al);text-align:right;letter-spacing:.15em;animation:livep 1s infinite}
@keyframes livep{0%,100%{opacity:1}50%{opacity:.4}}
#jdg{position:absolute;top:35%;left:50%;transform:translate(-50%,-50%);font-family:'Orbitron',sans-serif;font-size:2.5rem;font-weight:900;letter-spacing:.1em;pointer-events:none;opacity:0;z-index:20;text-shadow:0 0 30px currentColor}

#waiting{position:absolute;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;background:rgba(var(--bg-overlay),.85);backdrop-filter:blur(8px);transition:opacity .6s ease}
#waiting.hidden{opacity:0;pointer-events:none}
.wait-content{display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}
.wait-icon{font-size:4rem;animation:waitBounce 2s ease-in-out infinite;opacity:.4}
@keyframes waitBounce{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-10px) scale(1.1)}}
.wait-title{font-family:'Orbitron',sans-serif;font-size:1.5rem;font-weight:700;color:var(--text);letter-spacing:.1em}
.wait-sub{font-size:1rem;color:var(--dim)}
.wait-hint{font-size:.75rem;color:rgba(255,255,255,.15);margin-top:.5rem}
.wait-hint kbd{background:rgba(255,255,255,.08);padding:.1em .4em;border-radius:2px}

#tutorial{position:absolute;inset:0;z-index:60;display:none;align-items:center;justify-content:center;background:rgba(var(--bg-overlay),.92);backdrop-filter:blur(12px)}
#tutorial.show{display:flex}
.tut-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);padding:2.5rem 3rem;text-align:center;max-width:520px;width:90%;animation:tutIn .4s ease-out}
@keyframes tutIn{from{opacity:0;transform:scale(.92) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}
.tut-card h2{font-family:'Orbitron',sans-serif;font-size:1.4rem;letter-spacing:.2em;margin-bottom:1.5rem;background:linear-gradient(135deg,var(--al),var(--ad),var(--au),var(--ar));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.tut-section{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.5rem;text-align:left}
.tut-step{display:flex;align-items:flex-start;gap:.8rem}
.tut-num{font-family:'Orbitron',sans-serif;font-size:.8rem;font-weight:700;color:var(--ad);border:1px solid var(--ad);width:1.6rem;height:1.6rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;border-radius:2px}
.tut-text{font-size:.85rem;color:var(--dim);line-height:1.5}
.tut-keys{display:flex;align-items:center;justify-content:center;gap:1.2rem;margin-bottom:1.2rem}
.tut-key-group{display:flex;flex-direction:column;align-items:center;gap:.4rem}
.tut-label{font-size:.65rem;color:var(--dim);letter-spacing:.15em;text-transform:uppercase}
.tut-key-row{display:flex;gap:.4rem}
.tk{font-family:'Orbitron',sans-serif;font-size:.9rem;font-weight:700;width:2.4rem;height:2.4rem;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:4px}
.tk.al{color:var(--al);border-color:rgba(255,45,85,.3)}
.tk.ad{color:var(--ad);border-color:rgba(0,229,255,.3)}
.tk.au{color:var(--au);border-color:rgba(118,255,3,.3)}
.tk.ar{color:var(--ar);border-color:rgba(255,171,0,.3)}
.tut-or{font-size:.75rem;color:var(--dim)}
.tut-grades{display:flex;justify-content:center;gap:1rem;margin-bottom:1.8rem}
.tg{font-family:'Orbitron',sans-serif;font-size:.7rem;font-weight:700;letter-spacing:.08em}
.tut-btn{margin:0 auto;display:block}

#results{display:none;flex-direction:column;align-items:center;justify-content:center;height:100vh;background:radial-gradient(ellipse at 50% 30%,var(--bg-glow) 0%,var(--bg) 70%);z-index:100;position:relative}
.rcard{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);padding:3rem 4rem;text-align:center;min-width:400px}
.rcard h2{font-family:'Orbitron',sans-serif;font-size:1.8rem;margin-bottom:.3rem}
.rcard .rsong{color:var(--dim);font-size:.9rem;margin-bottom:2rem}
.rscore{font-family:'Orbitron',sans-serif;font-size:4rem;font-weight:900;margin-bottom:.5rem}
.rgrade{font-family:'Orbitron',sans-serif;font-size:6rem;font-weight:900;line-height:1;margin-bottom:1.5rem}
.rstats{display:grid;grid-template-columns:1fr 1fr;gap:.5rem 2rem;margin-bottom:2rem;text-align:left}
.rstats .sl{color:var(--dim);font-size:.85rem}
.rstats .sv{font-family:'Orbitron',sans-serif;font-weight:700;font-size:1.1rem}
.rbtns{display:flex;gap:1rem;justify-content:center}
.de{color:var(--au)}.dn{color:var(--ad)}.dh{color:var(--ar)}.dx{color:var(--al)}.di{color:#ff00ff}