@import url('https://fonts.googleapis.com/css2?family=Audiowide&family=Orbitron:wght@400;900&display=swap');
:root{--neon:#00fff2;--pink:#ff0055;--gold:#ffcc00;}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
body{margin:0;padding:0;position:relative;width:100%;height:100%;background:#000;color:#fff;font-family:'Audiowide',sans-serif;overflow:hidden;-webkit-user-select:none;user-select:none;}html{width:100%;height:100%;background:#000;}
canvas{display:block;position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;touch-action:none;z-index:10;}
#score-ui{position:absolute;top:12%;width:100%;text-align:center;font-size:clamp(3rem,15vw,5rem);font-family:'Orbitron';pointer-events:none;text-shadow:0 0 30px var(--neon);z-index:200;opacity:0;transition:opacity .4s;transform-origin:center;}
#hiscore-ui{position:absolute;top:5%;width:100%;text-align:center;font-size:clamp(.6rem,2vw,.85rem);font-family:'Orbitron';pointer-events:none;color:rgba(255,204,0,.7);z-index:200;opacity:0;letter-spacing:2px;}
#combo-ui{position:absolute;top:calc(12% + clamp(3rem,15vw,5rem) + 10px);width:100%;text-align:center;font-size:.85rem;font-family:'Orbitron';pointer-events:none;color:#ff8c00;z-index:200;opacity:0;letter-spacing:3px;text-shadow:0 0 15px #ff8c00;transition:opacity .25s;}
#time-ui{position:absolute;top:5%;width:100%;text-align:center;font-size:clamp(.8rem,3vw,1.1rem);font-family:'Orbitron';pointer-events:none;color:var(--pink);text-shadow:0 0 15px var(--pink);z-index:200;opacity:0;letter-spacing:2px;}
#coin-ui{position:absolute;top:22px;right:82px;font-family:'Orbitron';font-size:.95rem;color:var(--gold);text-shadow:0 0 8px var(--gold);z-index:200;opacity:0;line-height:46px;pointer-events:none;}
.sys-btn{position:absolute;top:20px;width:50px;height:50px;background:rgba(0,255,242,.1);border:2px solid var(--neon);border-radius:12px;color:var(--neon);font-family:'Orbitron';font-weight:900;display:none;align-items:center;justify-content:center;z-index:2000;cursor:pointer;touch-action:manipulation;transition:.2s;font-size:1.4rem;}
.sys-btn:active{background:var(--neon);color:#000;}
#exit-btn{left:20px;}#pause-btn{right:20px;font-size:1.2rem;}
#toast{position:absolute;top:78px;left:50%;transform:translateX(-50%);padding:10px 22px;border-radius:26px;font-family:'Orbitron';font-weight:900;z-index:3000;display:none;pointer-events:none;white-space:nowrap;font-size:.8rem;}
.overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.93);display:-webkit-flex;display:flex;-webkit-flex-direction:column;flex-direction:column;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;z-index:300;}
.hidden{opacity:0!important;visibility:hidden!important;pointer-events:none!important;display:none!important;}
.popup{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:88%;max-width:440px;background:#07070f;border:1.5px solid rgba(0,255,242,.35);padding:20px;border-radius:16px;display:none;z-index:2500;max-height:88vh;overflow-y:auto;box-shadow:0 0 60px rgba(0,255,242,.08);}
.btn{background:none;border:2px solid var(--neon);color:var(--neon);padding:12px 28px;font-size:.95rem;cursor:pointer;width:80%;max-width:290px;border-radius:6px;transition:.25s;font-family:'Orbitron';margin:5px;touch-action:manipulation;position:relative;z-index:500;}
.btn:active,.btn:hover{background:var(--neon);color:#000;}
.btn-gold{border-color:var(--gold)!important;color:var(--gold)!important;}.btn-gold:active,.btn-gold:hover{background:var(--gold)!important;color:#000!important;}
.btn-red{border-color:var(--pink)!important;color:var(--pink)!important;}.btn-red:active,.btn-red:hover{background:var(--pink)!important;color:#000!important;}
.btn-sm{padding:8px 16px;font-size:.78rem;width:auto;margin:4px;}
#game-title{font-size:clamp(2.2rem,10vw,3.8rem);color:var(--neon);text-shadow:0 0 28px var(--neon),0 0 56px var(--neon);margin:0 0 2px;font-family:'Orbitron';cursor:pointer;z-index:500;position:relative;}
#lobby-stat{color:rgba(255,204,0,.75);font-size:.78rem;font-family:'Orbitron';letter-spacing:2px;margin:0 0 2px;}
#lobby-coins{color:var(--gold);font-size:1.05rem;font-family:'Orbitron';font-weight:900;text-shadow:0 0 8px var(--gold);margin:0 0 16px;}
.mode-sel{display:-webkit-flex;display:flex;align-items:center;gap:0;margin:0 0 0;z-index:500;position:relative;width:80%;max-width:290px;}
.mode-arr{background:rgba(255,255,255,.04);border:1.5px solid rgba(255,255,255,.18);color:rgba(255,255,255,.6);width:38px;height:44px;border-radius:8px;cursor:pointer;font-size:1.4rem;line-height:1;transition:.2s;flex-shrink:0;touch-action:manipulation;display:-webkit-flex;display:flex;align-items:center;justify-content:center;}
.mode-arr:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);color:#fff;}
.mode-arr:active{background:rgba(255,255,255,.16);color:#fff;}
#mode-wrap{flex:1;display:-webkit-flex;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px 8px;background:rgba(255,255,255,.03);border-top:1.5px solid rgba(255,255,255,.1);border-bottom:1.5px solid rgba(255,255,255,.1);min-height:60px;gap:4px;}
#mode-name{font-family:'Orbitron';font-size:1.05rem;font-weight:900;text-align:center;transition:color .25s,text-shadow .25s;letter-spacing:1px;}
#mode-desc{font-size:.66rem;color:rgba(255,255,255,.45);text-align:center;max-width:200px;line-height:1.4;letter-spacing:.3px;}
#mode-block{display:-webkit-flex;display:flex;flex-direction:column;align-items:center;width:80%;max-width:290px;border:1.5px solid rgba(255,255,255,.09);border-radius:10px;overflow:hidden;margin:0 0 14px;background:rgba(5,5,18,.6);}
.lobby-row{display:-webkit-flex;display:flex;gap:8px;width:80%;max-width:290px;margin:0;}
.lobby-row .btn{flex:1;width:auto;margin:5px 0;padding:11px 8px;font-size:.75rem;}
.tab-bar{display:-webkit-flex;display:flex;gap:2px;margin-bottom:14px;border-bottom:1px solid #1a1a28;padding-bottom:10px;}
.stab{flex:1;background:none;border:1px solid transparent;color:#383848;font-family:'Orbitron';font-size:.65rem;padding:7px 6px;cursor:pointer;border-radius:5px;transition:.2s;touch-action:manipulation;}
.stab.on{background:rgba(0,255,242,.08);color:var(--neon);border-color:rgba(0,255,242,.25);}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
.scard{padding:11px 8px;border:2px solid #1e1e2e;border-radius:10px;text-align:center;cursor:pointer;font-family:'Orbitron';font-size:.7rem;transition:.25s;background:none;color:#555;touch-action:manipulation;}
.scard:hover{border-color:var(--neon);color:var(--neon);}
.scard.son{border-color:var(--neon);background:var(--neon);color:#000;}
.buy-tag{display:inline-block;margin-top:5px;background:rgba(0,255,242,.07);color:var(--neon);padding:2px 7px;border-radius:4px;font-size:.58rem;border:1px solid rgba(0,255,242,.25);}
.ucard{display:-webkit-flex;display:flex;align-items:center;gap:10px;padding:11px;border:1px solid #1a1a2a;border-radius:10px;margin-bottom:7px;}
.ubar{display:-webkit-flex;display:flex;gap:3px;margin-top:4px;}
.udot{width:14px;height:4px;border-radius:2px;background:#1a1a2a;}
.udot.on{background:var(--neon);box-shadow:0 0 5px var(--neon);}
.tcard,.mcard{display:-webkit-flex;display:flex;align-items:center;gap:10px;padding:10px 11px;border:1px solid #1a1a2a;border-radius:9px;margin-bottom:6px;}
.tcard.tdone{border-color:rgba(255,204,0,.45);background:rgba(255,204,0,.04);}
.tcard.thid{border-color:rgba(192,132,252,.45);background:rgba(168,85,247,.05);}
.mcard.mdone{border-color:rgba(255,204,0,.35);background:rgba(255,204,0,.03);}
.prog-wrap{height:4px;background:#111;border-radius:2px;overflow:hidden;margin-top:5px;}
.prog-bar{height:100%;border-radius:2px;}
.drow{display:-webkit-flex;display:flex;justify-content:space-between;align-items:center;margin-bottom:9px;font-size:.8rem;gap:8px;}
input[type=range]{accent-color:var(--neon);width:90px;cursor:pointer;flex-shrink:0;}
/* Difficulty selection */
#diff-ui{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.94);display:none;-webkit-flex-direction:column;flex-direction:column;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;z-index:3500;padding:20px;}
#diff-ui.show{display:-webkit-flex;display:flex;}
.diff-mode-label{font-family:'Orbitron';font-size:clamp(.7rem,3vw,.9rem);letter-spacing:3px;margin-bottom:4px;opacity:.6;}
.diff-mode-name{font-family:'Orbitron';font-size:clamp(1.4rem,7vw,2rem);font-weight:900;margin-bottom:20px;text-shadow:0 0 20px currentColor;}
.diff-cards{display:-webkit-flex;display:flex;gap:14px;width:100%;max-width:480px;}
.diff-card{flex:1;border:2px solid #1e1e2e;border-radius:14px;padding:18px 14px;cursor:pointer;background:rgba(5,5,18,.8);transition:.25s;touch-action:manipulation;text-align:center;display:-webkit-flex;display:flex;flex-direction:column;align-items:center;gap:8px;}
.diff-card:hover,.diff-card:active{transform:translateY(-2px);}
.diff-card-tag{font-family:'Orbitron';font-size:clamp(.55rem,2vw,.7rem);letter-spacing:2px;padding:3px 10px;border-radius:20px;border:1px solid currentColor;margin-bottom:2px;}
.diff-card-name{font-family:'Orbitron';font-size:clamp(.95rem,4vw,1.25rem);font-weight:900;margin-bottom:4px;}
.diff-card-desc{font-size:clamp(.62rem,2.2vw,.75rem);color:#666;line-height:1.55;max-width:160px;}
.diff-badge{display:inline-flex;align-items:center;gap:4px;font-size:.6rem;font-family:'Orbitron';padding:2px 7px;border-radius:4px;margin:1px;}
.coin-dot{display:inline-block;width:13px;height:13px;background:var(--gold);border-radius:50%;vertical-align:middle;margin-right:4px;box-shadow:0 0 7px var(--gold),0 0 14px rgba(255,204,0,.4);flex-shrink:0;position:relative;top:-1px;}
/* Tutorial */
#tut-ui{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.93);display:none;-webkit-flex-direction:column;flex-direction:column;-webkit-align-items:center;align-items:center;z-index:2800;overflow:hidden;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);}
#tut-ui.show{display:-webkit-flex;display:flex;}
#tut-canvas-wrap{width:100%;flex-shrink:0;border-bottom:1px solid rgba(0,255,242,.12);position:relative;overflow:hidden;}
#tut-canvas{display:block;width:100%;height:auto;}
#tut-body{flex:1;display:-webkit-flex;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px 20px 4px;width:100%;max-width:520px;min-height:0;text-align:center;overflow-y:auto;-webkit-overflow-scrolling:touch;}
.tut-h{font-size:clamp(1rem,3.2vw + 2.2vh,1.5rem);font-family:'Orbitron';margin-bottom:6px;}
.tut-d{font-size:clamp(.7rem,1.6vw + 1.3vh,.88rem);color:#aaa;line-height:1.55;max-width:340px;}
.tut-hint{font-size:clamp(.55rem,1.6vw,.65rem);color:#333;margin-top:8px;font-family:'Orbitron';letter-spacing:2px;animation:blink 1.4s infinite;flex-shrink:0;}
@keyframes blink{0%,100%{opacity:.35;}50%{opacity:1;}}
#tut-footer{flex-shrink:0;width:100%;max-width:520px;padding:8px 20px 16px;display:-webkit-flex;display:flex;flex-direction:column;align-items:center;gap:8px;}
#tut-dots{display:-webkit-flex;display:flex;gap:7px;}
#tut-nav{display:-webkit-flex;display:flex;gap:8px;align-items:center;width:100%;max-width:320px;}
#tut-prev{flex:0 0 46px;height:42px;background:none;border:1.5px solid #2a2a3a;color:#444;border-radius:7px;cursor:pointer;font-size:1.2rem;transition:.2s;touch-action:manipulation;}
#tut-prev:not([disabled]):hover,#tut-prev:not([disabled]):active{border-color:#aaa;color:#aaa;}
#tut-next{flex:1;height:42px;background:none;border:2px solid var(--neon);color:var(--neon);border-radius:7px;cursor:pointer;font-family:'Orbitron';font-size:.82rem;font-weight:900;transition:background .2s,color .2s,border-color .2s;touch-action:manipulation;}
#tut-next:hover{filter:brightness(1.15);}
#tut-next:active{opacity:.8;}
#tut-exit{flex:0 0 46px;height:42px;background:none;border:1.5px solid rgba(255,0,85,.4);color:rgba(255,0,85,.6);border-radius:7px;cursor:pointer;font-size:1rem;transition:.2s;touch-action:manipulation;}
#tut-exit:hover,#tut-exit:active{background:var(--pink);color:#fff;border-color:var(--pink);}

@media (max-height:640px){
  #tut-body{padding:6px 18px 2px;}
  .tut-h{margin-bottom:4px;}
  .tut-d{line-height:1.4;}
  .tut-hint{margin-top:5px;}
  #tut-footer{padding:6px 20px 12px;gap:6px;}
  #tut-prev,#tut-next,#tut-exit{height:38px;}
}
@media (max-height:520px){
  .tut-hint{display:none;}
  #tut-dots{transform:scale(.85);}
}