:root{
  --bg:#07090f; --panel:rgba(14,18,30,.78); --line:rgba(148,163,200,.22);
  --text:#e8ecf5; --muted:#a3adc4; --a:#5eead4; --b:#a78bfa; --bad:#ff6b81;
  --mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --sans:"Space Grotesk",system-ui,-apple-system,Segoe UI,sans-serif;
}
*{box-sizing:border-box}
html{color-scheme:dark}
body{margin:0;background:var(--bg);color:var(--text);font:400 1rem/1.6 var(--sans);min-height:100vh;overflow-x:hidden}
#bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;touch-action:pan-y}
.top,main,.foot{position:relative;z-index:1}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
a{color:var(--a)}
:focus-visible{outline:2px solid var(--a);outline-offset:3px}

.top{display:flex;justify-content:space-between;align-items:center;padding:1.1rem clamp(1rem,4vw,2.5rem);pointer-events:none}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:700;font-size:1.25rem;letter-spacing:.02em;color:var(--text);text-decoration:none;pointer-events:auto}
.logo-mark{width:1.1rem;height:1.1rem;border-radius:5px;background:linear-gradient(135deg,var(--a),var(--b));transform:rotate(45deg)}
.status{display:flex;align-items:center;gap:.5rem;font:600 .8rem var(--mono);color:var(--muted);border:1px solid var(--line);padding:.35rem .8rem;border-radius:99px;background:var(--panel)}
.dot{width:.5rem;height:.5rem;border-radius:50%;background:var(--a);box-shadow:0 0 0 0 var(--a);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}

main{max-width:1180px;margin:0 auto;padding:0 clamp(1rem,4vw,2.5rem) 3rem}
.hero{min-height:62vh;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:3rem 0 2rem;pointer-events:none}
.hero p,.hero h1{pointer-events:auto}
.eyebrow{font:600 .8rem var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--a);margin:0 0 1rem}
h1{font:700 clamp(3rem,13vw,9rem)/.95 var(--sans);letter-spacing:-.03em;margin:0 0 1.25rem;
  background:linear-gradient(100deg,var(--text) 20%,var(--a) 55%,var(--b));-webkit-background-clip:text;background-clip:text;color:transparent;cursor:default;font-variant-ligatures:none}
.lead{font-size:clamp(1.05rem,2.2vw,1.35rem);max-width:36rem;color:var(--muted);margin:0 0 1rem}
.hint{font:.8rem var(--mono);color:var(--muted);margin:0}
.hint-touch{display:none}
@media (hover:none){.hint-pointer{display:none}.hint-touch{display:inline}}

.toys{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:1.4rem;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:flex;flex-direction:column;gap:.5rem;transition:border-color .25s,transform .25s}
.card:hover,.card:focus-within{border-color:rgba(94,234,212,.5)}
.card h2{font-size:1.3rem;margin:0}
.card-sub{margin:0 0 .6rem;color:var(--muted);font-size:.92rem}
code{font-family:var(--mono);color:var(--a)}
label{font:600 .78rem var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:.4rem}
input[type=text]{width:100%;background:#0b0f1a;color:var(--text);border:1px solid var(--line);border-radius:8px;padding:.6rem .75rem;font:1rem var(--mono)}
input[type=range]{width:100%;accent-color:var(--a)}
.row{display:flex;gap:.6rem;margin-top:auto;padding-top:.8rem;flex-wrap:wrap}
button{font:600 .9rem var(--sans);cursor:pointer;border:0;border-radius:8px;padding:.6rem 1.1rem;background:var(--a);color:#04201c;transition:transform .15s,filter .15s}
button:hover{filter:brightness(1.1);transform:translateY(-1px)}
button:active{transform:translateY(1px)}
button.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}

.cipher-out,.pw{font:600 1.15rem/1.4 var(--mono);color:var(--a);background:#0b0f1a;border:1px solid var(--line);border-radius:8px;padding:.8rem;min-height:3.4rem;word-break:break-all;margin-top:.4rem}
.pw{font-size:1.05rem}
.meter{height:6px;border-radius:9px;background:#151b2c;overflow:hidden;margin-top:.6rem}
.meter span{display:block;height:100%;width:0;background:var(--a);transition:width .3s,background .3s}
.meter-label{font:.8rem var(--mono);color:var(--muted);margin:.3rem 0 0}

.term{background:#05070c;border:1px solid var(--line);border-radius:8px;font:.85rem/1.5 var(--mono);display:flex;flex-direction:column;height:260px}
.term-log{flex:1;overflow-y:auto;padding:.7rem;white-space:pre-wrap;word-break:break-word;color:#c9d3ea}
.term-log .cmd{color:var(--a)}
.term-form{display:flex;gap:.5rem;align-items:center;padding:.5rem .7rem;border-top:1px solid var(--line);color:var(--a)}
.term-form input{flex:1;min-width:0;background:none;border:0;color:var(--text);font:inherit;outline:0}
.term:focus-within{border-color:var(--a)}

.game{position:relative;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#05070c}
#game-canvas{display:block;width:100%;height:auto;cursor:crosshair;touch-action:manipulation}
.game-hud{display:flex;justify-content:space-between;padding:.45rem .7rem;font:.78rem var(--mono);color:var(--muted);border-top:1px solid var(--line)}
.game-hud b{color:var(--text)}

.hash-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:3px;margin-top:.6rem;max-width:200px;align-self:center;width:100%}
.hash-grid i{aspect-ratio:1;border-radius:3px;background:#151b2c;transition:background .25s}
.hash-hex{font-size:.75rem;font-weight:400;min-height:0;color:var(--muted)}

.seq{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;max-width:240px;width:100%;align-self:center;margin-top:.4rem}
.pad{aspect-ratio:1;border-radius:12px;padding:0;opacity:.45;border:2px solid transparent;transition:opacity .12s,transform .12s,box-shadow .12s}
.pad:disabled{cursor:default}
.pad:not(:disabled):hover{opacity:.7}
.pad[data-pad="0"]{background:#5eead4}.pad[data-pad="1"]{background:#a78bfa}
.pad[data-pad="2"]{background:#ff7eb6}.pad[data-pad="3"]{background:#ffc15e}
.pad.lit{opacity:1;transform:scale(1.04);box-shadow:0 0 24px currentColor;border-color:#fff}
.pad[data-pad="0"].lit{color:#5eead4}.pad[data-pad="1"].lit{color:#a78bfa}
.pad[data-pad="2"].lit{color:#ff7eb6}.pad[data-pad="3"].lit{color:#ffc15e}

.foot{text-align:center;color:var(--muted);font-size:.85rem;padding:1.5rem 1rem 2rem}
.foot p{margin:0}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}