:root{
    --bg:#0a0710; --panel:#140d22; --panel-edge:#241640;
    --neon-magenta:#ff2e88; --neon-cyan:#21e6ff; --neon-yellow:#ffe14d;
    --neon-green:#39ff88; --dim:#6b5a8a; --crt:#0c0a16; --disp:#7cffb0;
    --chrome-v:470px;
    --screen:clamp(300px,min(calc(100vh - var(--chrome-v)),calc(100vw - 430px)),820px);
  }
  @supports (height:100dvh){:root{--screen:clamp(300px,min(calc(100dvh - var(--chrome-v)),calc(100vw - 430px)),820px)}}
  @media (max-height:1264px) and (min-width:861px){
    :root{--chrome-v:213px}
  }
  @media (max-width:860px){:root{--screen:max(240px,min(calc(100vw - 96px),640px,calc(100vh - 110px)))}}
  @supports (height:100dvh){@media (max-width:860px){:root{--screen:max(240px,min(calc(100vw - 96px),640px,calc(100dvh - 110px)))}}}
  *{box-sizing:border-box;margin:0;padding:0}
  html{-webkit-text-size-adjust:100%}
  body{
    background:var(--bg);color:#efe7ff;font-family:'VT323',monospace;min-height:100vh;
    overflow-x:hidden;
    background-image:
      radial-gradient(ellipse at 50% -10%, rgba(255,46,136,.22), transparent 55%),
      radial-gradient(ellipse at 90% 110%, rgba(33,230,255,.14), transparent 50%),
      radial-gradient(ellipse at 50% 40%, transparent 35%, rgba(5,3,10,.8) 100%),
      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='32'%3E%3Crect width='64' height='32' fill='%23100a19'/%3E%3Cg fill='%231f1631'%3E%3Crect x='1' y='1' width='30' height='14' rx='1'/%3E%3Crect x='33' y='1' width='30' height='14' rx='1'/%3E%3Crect x='-15' y='17' width='30' height='14' rx='1'/%3E%3Crect x='17' y='17' width='30' height='14' rx='1'/%3E%3Crect x='49' y='17' width='30' height='14' rx='1'/%3E%3C/g%3E%3C/svg%3E");
    background-size:auto,auto,auto,64px 32px;
  }
  .rain{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:0}
  .wrap{position:relative;z-index:1}
  @media (prefers-reduced-motion:no-preference){.flicker{animation:flick 5s infinite steps(60)}}
  @keyframes flick{0%,97%,100%{opacity:1}98%{opacity:.82}99%{opacity:.93}}

  .wrap{max-width:calc(var(--screen) + 474px);margin:0 auto;padding:18px 16px 24px}

  /* the sign hangs straight on the brick wall (no panel), lighting the bricks around it */
  .marquee{text-align:center;padding:22px 16px 26px;position:relative;margin-bottom:22px}
  .marquee::before{content:"";position:absolute;inset:-30% 8%;z-index:-1;pointer-events:none;
    background:radial-gradient(ellipse at 50% 50%,rgba(255,46,136,.20),rgba(33,230,255,.09) 45%,transparent 72%)}
  .marquee .bulbs{display:none}
  .marquee h1{font-family:'Tilt Neon','Press Start 2P',sans-serif;font-weight:400;font-size:clamp(36px,7vw,84px);
    line-height:1.1;letter-spacing:4px}
  .tube.t1{color:#ffd6ea;text-shadow:0 0 2px #fff,0 0 6px var(--neon-magenta),0 0 14px var(--neon-magenta),0 0 30px var(--neon-magenta),0 0 52px rgba(255,46,136,.55)}
  .tube.t2{color:#d6fbff;text-shadow:0 0 2px #fff,0 0 6px var(--neon-cyan),0 0 14px var(--neon-cyan),0 0 30px var(--neon-cyan),0 0 52px rgba(33,230,255,.55)}
  @media (prefers-reduced-motion:no-preference){.dud{animation:dud 7s infinite}}
  @keyframes dud{0%,62%,66%,68%,100%{opacity:1}63%,65%,67%{opacity:.18;text-shadow:none}}
  .marquee p{font-size:22px;color:var(--neon-cyan);margin-top:12px;letter-spacing:2px;text-shadow:0 0 10px rgba(33,230,255,.6)}

  .rack{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:0 0 20px}
  .cart{font-family:'Press Start 2P',monospace;font-size:12px;cursor:pointer;color:var(--dim);
    background:var(--panel);border:2px solid var(--panel-edge);border-bottom-width:6px;
    border-radius:8px 8px 4px 4px;padding:14px 16px;transition:transform .08s,color .15s;letter-spacing:1px;}
  .cart:hover{color:#fff;transform:translateY(-2px)}
  .cart:focus-visible{outline:3px solid var(--neon-yellow);outline-offset:2px}
  .cart.on{color:#0a0710;border-color:var(--neon-magenta);border-bottom-width:2px;transform:translateY(2px);
    background:linear-gradient(180deg,var(--neon-magenta),#c0156a);box-shadow:0 0 16px rgba(255,46,136,.6);}

  .stage{display:grid;grid-template-columns:auto minmax(280px,360px);gap:18px;align-items:start;justify-content:center}
  @media (max-width:860px){.stage{grid-template-columns:1fr}}

  .cabinet{background:linear-gradient(180deg,#191027,#0d0818);border:3px solid var(--panel-edge);
    border-radius:16px;padding:18px;box-shadow:0 18px 50px rgba(0,0,0,.6),0 0 0 4px #000 inset;
    width:calc(var(--screen) + 64px);max-width:100%;margin-inline:auto;}
  .bezel{background:#04100a;border-radius:12px;padding:14px;position:relative;
    box-shadow:0 0 0 3px #000,inset 0 0 60px rgba(0,0,0,.9);}
  .bezel::before{content:"";position:absolute;inset:14px;border-radius:10px;pointer-events:none;z-index:4;
    background:radial-gradient(ellipse at 50% 0%,rgba(124,255,176,.10),transparent 60%);}
  .bezel::after{content:"";position:absolute;inset:14px;border-radius:10px;pointer-events:none;z-index:3;
    background:radial-gradient(ellipse at 50% 50%,transparent 62%,rgba(0,0,0,.42) 100%),
      repeating-linear-gradient(to bottom,rgba(0,0,0,0) 0 2px,rgba(0,0,0,.22) 2px 3px);
    box-shadow:inset 0 0 40px rgba(0,0,0,.55)}
  canvas{display:block;width:100%;height:auto;image-rendering:auto;background:var(--crt);border-radius:10px;touch-action:none}
  svg.pix{width:1.15em;height:1.15em;vertical-align:-.22em;margin-right:.45em;flex:none}
  .expand svg.pix{width:.8em;height:.8em;margin:0}
  .badge svg.pix{margin:0}

  .expand{position:absolute;top:18px;right:18px;z-index:6;
    width:clamp(36px,calc(var(--screen)*.05),50px);height:clamp(36px,calc(var(--screen)*.05),50px);
    display:flex;align-items:center;justify-content:center;font-size:clamp(18px,calc(var(--screen)*.026),26px);line-height:1;cursor:pointer;
    color:var(--neon-cyan);background:rgba(8,18,14,.72);border:2px solid var(--panel-edge);border-radius:8px;
    text-shadow:0 0 8px rgba(33,230,255,.6);transition:transform .08s,color .15s,border-color .15s}
  .expand:hover{color:#fff;border-color:var(--neon-cyan);transform:translateY(-1px)}
  .expand:focus-visible{outline:3px solid var(--neon-yellow);outline-offset:2px}
  body.expanded{--screen:clamp(300px,min(calc(100vh - 124px),calc(100vw - 430px)),1800px)}
  @supports (height:100dvh){body.expanded{--screen:clamp(300px,min(calc(100dvh - 124px),calc(100vw - 430px)),1800px)}}
  @media (max-width:860px){body.expanded{--screen:max(240px,min(calc(100vw - 96px),calc(100vh - 124px)))}}
  body.expanded .cabinet{scroll-margin-top:8px}
  body.expanded .wrap{max-width:none}

  .hud{display:flex;justify-content:space-between;align-items:center;gap:12px;
    font-family:'Press Start 2P',monospace;font-size:clamp(11px,calc(var(--screen)*.018),17px);color:var(--disp);
    padding:6px 4px 12px;text-shadow:0 0 8px rgba(124,255,176,.6);flex-wrap:wrap}
  .hud .right{display:flex;gap:16px}
  .hud b{color:var(--neon-yellow)}
  .hud .lvl{color:var(--neon-cyan)}
  .hud .hi b{color:var(--neon-magenta)}
  .hud .hi.beat b{color:#fff;text-shadow:0 0 10px var(--neon-yellow),0 0 18px var(--neon-yellow)}
  .pad button{touch-action:none;-webkit-user-select:none;user-select:none}
  @media (max-width:420px){.hud #title{display:none}.hud .right{gap:12px}}

  .controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
  .btn{font-family:'Press Start 2P',monospace;font-size:clamp(11px,calc(var(--screen)*.016),15px);cursor:pointer;color:#fff;background:var(--panel);
    border:2px solid var(--neon-cyan);border-bottom-width:5px;border-radius:8px;padding:12px 16px;letter-spacing:1px;transition:transform .08s}
  .btn:active{transform:translateY(3px);border-bottom-width:2px}
  .btn:focus-visible{outline:3px solid var(--neon-yellow);outline-offset:2px}
  .hint{font-size:clamp(18px,calc(var(--screen)*.03),26px);color:var(--dim);text-align:center;margin-top:12px}
  .hint kbd{background:#231640;border:1px solid var(--panel-edge);border-radius:4px;padding:1px 7px;color:var(--neon-cyan);font-family:'VT323',monospace;font-size:1em}
  .iconbtn{font-family:'Press Start 2P',monospace;font-size:clamp(11px,calc(var(--screen)*.016),15px);cursor:pointer;color:#0a0710;
    background:linear-gradient(180deg,var(--neon-green),#1fbf63);border:2px solid #6fffb0;border-bottom-width:5px;
    border-radius:8px;padding:12px 16px;letter-spacing:1px;line-height:1;transition:transform .08s;white-space:nowrap}
  .iconbtn:active{transform:translateY(3px);border-bottom-width:2px}
  .iconbtn.off{color:#fff;background:linear-gradient(180deg,#3a2440,#241326);border-color:var(--neon-magenta)}
  .iconbtn:focus-visible{outline:3px solid var(--neon-yellow);outline-offset:2px}

  /* game-over overlay */
  .overlay{position:absolute;inset:14px;z-index:5;display:none;align-items:center;justify-content:center;
    background:radial-gradient(ellipse at 50% 40%,rgba(20,8,32,.78),rgba(5,3,10,.94));border-radius:8px}
  .overlay.show{display:flex}
  .ov-card{text-align:center;padding:10px 20px;transform:scale(.6);opacity:0;
    animation:ovpop .45s cubic-bezier(.2,1.3,.4,1) forwards}
  @keyframes ovpop{to{transform:scale(1);opacity:1}}
  .ov-banner{font-family:'Press Start 2P',monospace;font-size:26px;color:var(--neon-magenta);
    text-shadow:0 0 14px rgba(255,46,136,.7);letter-spacing:1px;margin-bottom:18px}
  .ov-banner.win{color:var(--neon-yellow);text-shadow:0 0 18px rgba(255,225,77,.85)}
  @media (prefers-reduced-motion:no-preference){
    .ov-banner.win{animation:hsflash .6s steps(2) infinite}}
  @keyframes hsflash{50%{color:#fff;text-shadow:0 0 22px #fff}}
  .ov-score{font-family:'Press Start 2P',monospace;font-size:15px;color:var(--disp);margin-bottom:14px}
  .ov-score b{color:var(--neon-cyan)}
  .ov-rank{font-family:'Press Start 2P',monospace;font-size:15px;color:var(--neon-green);margin-bottom:8px;min-height:18px}
  .ov-pb{font-size:20px;color:var(--neon-yellow);margin-bottom:20px;min-height:22px;letter-spacing:1px}
  .ov-again{font-family:'Press Start 2P',monospace;font-size:13px;cursor:pointer;color:#0a0710;
    background:linear-gradient(180deg,var(--neon-cyan),#14a6bd);border:none;border-bottom:5px solid #0b6878;
    border-radius:8px;padding:14px 20px;letter-spacing:1px}
  .ov-again:active{transform:translateY(3px);border-bottom-width:2px}
  .ov-again:focus-visible{outline:3px solid var(--neon-yellow);outline-offset:2px}

  .pad{display:none;margin-top:16px}
  .pad .grid{display:grid;grid-template-columns:repeat(3,64px);grid-template-rows:repeat(3,64px);gap:8px;justify-content:center}
  .pad button{font-family:'Press Start 2P',monospace;font-size:16px;color:#0a0710;
    background:linear-gradient(180deg,var(--neon-cyan),#14a6bd);border:none;border-radius:10px;box-shadow:0 4px 0 #0b6878;cursor:pointer}
  .pad button:active{transform:translateY(3px);box-shadow:0 1px 0 #0b6878}
  .pad .empty{background:transparent;box-shadow:none}
  @media (hover:none) and (pointer:coarse){.pad{display:block}.hint{display:none}}

  .side{display:flex;flex-direction:column;gap:18px;min-width:0}
  .board,.panel{background:linear-gradient(180deg,#160f28,#0d0818);border:3px solid var(--panel-edge);
    border-radius:16px;padding:16px;box-shadow:0 18px 50px rgba(0,0,0,.5),0 0 0 4px #000 inset;}
  .panel .controls{flex-direction:column;align-items:stretch;gap:10px;margin-top:0}
  .panel .btn,.panel .iconbtn{width:100%;text-align:center}
  .panel .toggles{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .panel .toggles .iconbtn{padding:12px 6px;letter-spacing:0}
  .board h2{font-family:'Press Start 2P',monospace;font-size:12px;color:var(--neon-yellow);
    text-align:center;margin-bottom:4px;text-shadow:0 0 8px rgba(255,225,77,.5)}
  .board .sub{text-align:center;color:var(--dim);font-size:16px;margin-bottom:12px;letter-spacing:1px}
  #rows{display:grid;grid-template-columns:repeat(2,1fr);gap:0 22px}
  @media (max-width:560px){#rows{grid-template-columns:1fr}}
  .row{display:grid;grid-template-columns:26px 1fr auto;gap:8px;align-items:center;
    font-size:20px;padding:5px 6px;border-bottom:1px dashed #241640}
  .row .rk{color:var(--neon-cyan);font-family:'Press Start 2P',monospace;font-size:10px}
  .row .nm{color:#efe7ff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .row .sc{color:var(--neon-green);font-family:'Press Start 2P',monospace;font-size:10px}
  .row.me{background:rgba(255,46,136,.14);border-radius:4px}
  .row.me .nm{color:var(--neon-magenta)}
  .row.gold .rk{color:var(--neon-yellow)}
  .board .you{margin-top:12px;text-align:center;font-size:16px;color:var(--dim)}
  .board .you b{color:var(--neon-cyan)}
  .board .badges{margin-top:12px;padding-top:10px;border-top:1px dashed #241640}
  .badges-h{font-family:'Press Start 2P',monospace;font-size:9px;color:var(--dim);text-align:center;letter-spacing:1px;margin-bottom:8px}
  .badges-g{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
  .badge{width:30px;height:30px;display:grid;place-items:center;font-size:16px;line-height:1;cursor:default;
    border:1px solid var(--panel-edge);border-radius:6px;background:#0d0818;filter:grayscale(1);opacity:.3}
  .badge.on{filter:none;opacity:1;border-color:var(--neon-yellow);box-shadow:0 0 10px rgba(255,225,77,.45)}

  .fireworks{position:fixed;inset:0;width:100vw;height:100vh;pointer-events:none;z-index:1050}
  @media (prefers-reduced-motion:no-preference){
    canvas#screen{animation:crton .9s cubic-bezier(.2,.8,.2,1) backwards}
    .marquee.celebrate{animation:mqflash .3s steps(2) 8}
    .marquee.celebrate h1{filter:drop-shadow(0 0 18px rgba(255,225,77,.95)) brightness(1.4)}
    .row.slam{animation:slam .6s cubic-bezier(.2,1.4,.4,1) both,glowrow 1.2s ease-in-out .6s 3}
  }
  @keyframes crton{0%,40%{transform:scale(1,.004);filter:brightness(5)}70%{transform:scale(1,1.02);filter:brightness(1.8)}100%{transform:scale(1,1);filter:brightness(1)}}
  @keyframes mqflash{50%{border-color:var(--neon-yellow);box-shadow:0 0 0 4px #000 inset,0 0 40px rgba(255,225,77,.8)}}
  @keyframes slam{0%{transform:scale(1.8);opacity:0}100%{transform:scale(1);opacity:1}}
  @keyframes glowrow{50%{background:rgba(255,225,77,.25);box-shadow:0 0 14px rgba(255,225,77,.6)}}

  .modal{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;
    background:rgba(5,3,10,.82);backdrop-filter:blur(3px)}
  .modal.show{display:flex}
  .card{background:linear-gradient(180deg,#1b1030,#0e0820);border:3px solid var(--neon-magenta);
    border-radius:14px;padding:28px 26px;width:min(420px,90vw);text-align:center;
    box-shadow:0 0 30px rgba(255,46,136,.45),0 0 0 4px #000 inset}
  .card h3{font-family:'Press Start 2P',monospace;font-size:16px;color:var(--neon-yellow);margin-bottom:6px}
  .card p{color:var(--neon-cyan);font-size:18px;margin-bottom:18px;letter-spacing:1px}
  .card input{width:100%;font-family:'Press Start 2P',monospace;font-size:14px;text-align:center;
    color:var(--neon-green);background:#04100a;border:2px solid var(--panel-edge);border-radius:8px;
    padding:14px;letter-spacing:2px;margin-bottom:16px;outline:none}
  .card input:focus{border-color:var(--neon-cyan);box-shadow:0 0 14px rgba(33,230,255,.4)}
  .card .err{color:var(--neon-magenta);font-size:16px;min-height:20px;margin-bottom:8px}
  .card .go{width:100%;font-family:'Press Start 2P',monospace;font-size:13px;cursor:pointer;color:#0a0710;
    background:linear-gradient(180deg,var(--neon-yellow),#d4b800);border:none;border-bottom:5px solid #9c8700;
    border-radius:8px;padding:14px;letter-spacing:1px}
  .card .go:active{transform:translateY(3px);border-bottom-width:2px}

  footer{text-align:center;margin-top:18px;color:var(--dim);font-size:18px;letter-spacing:1px}
  footer span{color:var(--neon-magenta)}

  /* welcome-back toast */
  .toast{position:fixed;top:18px;left:50%;transform:translate(-50%,-20px);z-index:1100;
    font-family:'Press Start 2P',monospace;font-size:11px;letter-spacing:1px;
    color:#0a0710;background:linear-gradient(180deg,var(--neon-yellow),#e6c500);
    border:2px solid #fff3a8;border-radius:10px;padding:12px 18px;white-space:nowrap;
    box-shadow:0 8px 26px rgba(0,0,0,.5),0 0 18px rgba(255,225,77,.55);
    opacity:0;pointer-events:none;transition:opacity .35s ease, transform .35s ease;}
  .toast.show{opacity:1;transform:translate(-50%,0);}
  @media (max-width:520px){.toast{font-size:9px;padding:10px 12px}}

  /* short screens (laptops): compact the header so the whole cabinet fits without scrolling */
  @media (max-height:1264px) and (min-width:861px){
    .wrap{padding:10px 16px 12px}
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px}
    .marquee{flex:1;padding:8px 18px;margin-bottom:0}
    .marquee .bulbs{inset:4px}
    .marquee h1{font-size:clamp(32px,3.6vw,50px);line-height:1;letter-spacing:3px}
    .marquee p{display:none}
    .rack{margin:0}
    .cart{padding:8px 12px}
    footer{display:none}
  }

  /* short laptops: tighten the side panel so it never outgrows the game column */
  @media (max-height:720px) and (min-width:861px){
    .board,.panel{padding:12px}
    .board .sub{display:none}
    .row{padding:3px 6px}
    .panel .hint{margin-top:8px}
    .badge{width:26px;height:26px;font-size:14px}
  }
  /* phones: compact header and D-pad so the game, the pad and START fit on one screen */
  @media (max-width:860px){
    .wrap{padding:10px 12px 16px}
    .marquee{padding:10px 12px 12px;margin-bottom:10px}
    .marquee p{font-size:15px;margin-top:4px}
    .rack{margin-bottom:10px}
    .cart{padding:10px 12px}
    .stage{gap:12px}
    .pad{margin-top:10px}
  }
  @media (max-width:420px){
    .pad .grid{grid-template-columns:repeat(3,54px);grid-template-rows:repeat(3,54px);gap:6px}
  }

  /* readable page content below the game (how to play, FAQ) — also what search engines read */
  .info{margin-top:22px;background:linear-gradient(180deg,#160f28,#0d0818);border:3px solid var(--panel-edge);
    border-radius:16px;padding:22px 24px;box-shadow:0 18px 50px rgba(0,0,0,.5),0 0 0 4px #000 inset}
  .info h2{font-family:'Press Start 2P',monospace;font-size:14px;line-height:1.5;color:var(--neon-yellow);
    margin:22px 0 10px;text-shadow:0 0 8px rgba(255,225,77,.45)}
  .info h2:first-child{margin-top:0}
  .info p,.info li{font-size:21px;line-height:1.35;color:#d9cff0}
  .info a{color:var(--neon-cyan)}
  .info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:16px 0 4px}
  .info-grid article{border:1px solid var(--panel-edge);border-radius:10px;padding:12px 14px;background:#0d0818}
  .info h3{font-family:'Press Start 2P',monospace;font-size:12px;margin-bottom:8px}
  .info h3 a{color:var(--neon-magenta);text-decoration:none;text-shadow:0 0 8px rgba(255,46,136,.5)}
  .info-keys{list-style:none;display:grid;gap:4px}
  .info-keys b{color:var(--neon-cyan);font-weight:normal}
  .info details{border-bottom:1px dashed #241640;padding:8px 0}
  .info summary{cursor:pointer;font-size:21px;color:#efe7ff}
  .info details p{margin-top:6px}
  .info.lost{text-align:center;max-width:640px;margin:40px auto 0}
  .info .btn{display:inline-block;text-decoration:none;color:#fff;margin-top:10px}
  @media (max-width:860px){.info-grid{grid-template-columns:1fr}.info{padding:16px}}
  .ov-share{display:block;margin:12px auto 0;font-family:'Press Start 2P',monospace;font-size:11px;cursor:pointer;
    color:var(--neon-cyan);background:transparent;border:2px solid var(--neon-cyan);border-radius:8px;padding:10px 14px;letter-spacing:1px}
  .ov-share:focus-visible{outline:3px solid var(--neon-yellow);outline-offset:2px}