/* NeoOS home: access code gate and deck picker. Shares brand tokens with deck.css. */
:root{
  --brand-blue:#2D7FF9;--brand-cyan:#00D4FF;
  --background:#0A0A0F;--foreground:#F0F0F5;--card:#12121A;--secondary:#1E1E2E;
  --muted-foreground:#8A8A9A;--border:rgba(240,240,245,.10);--input:rgba(240,240,245,.14);
  --danger:#FF8A8A;--radius:.5rem;
  --font-sans:"Outfit",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:light){
  :root:not([data-theme="dark"]){
    --background:#F0F0F5;--foreground:#1A1A1F;--card:#FFFFFF;--secondary:#E4E6EB;
    --muted-foreground:#55556A;--border:rgba(26,26,31,.10);--input:rgba(26,26,31,.18);--danger:#B80707;
  }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--background);color:var(--foreground);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;display:grid;place-items:center;padding:24px}
body::before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(50% 50% at 80% 20%,rgba(45,127,249,.18),transparent 70%)}
main{position:relative;width:100%;max-width:420px}
.lockup{display:flex;align-items:center;gap:14px;margin-bottom:28px}
.lockup svg{width:48px;height:48px}
.lockup b{display:block;font-size:26px;font-weight:700;letter-spacing:-.02em;line-height:1}
.lockup span{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-foreground)}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:28px;box-shadow:0 8px 30px rgba(0,0,0,.25)}
h1{margin:0 0 6px;font-size:20px;font-weight:600;letter-spacing:-.01em}
p{margin:0;color:var(--muted-foreground);font-size:14px;line-height:1.5}
.dots{display:flex;gap:14px;justify-content:center;margin:26px 0 22px}
.dot{width:14px;height:14px;border-radius:50%;border:2px solid var(--input);transition:background .15s,border-color .15s,transform .15s}
.dot.on{background:var(--brand-blue);border-color:var(--brand-blue);transform:scale(1.1)}
.dots.error .dot{border-color:var(--danger);animation:shake .4s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.pad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.key{height:56px;border-radius:var(--radius);border:1px solid var(--input);background:transparent;color:var(--foreground);font:inherit;font-size:22px;font-weight:500;cursor:pointer;transition:background .2s ease-out}
.key:hover{background:var(--secondary)}
.key:active{background:var(--brand-blue);color:#fff;border-color:var(--brand-blue)}
.key:focus-visible{outline:2px solid var(--brand-blue);outline-offset:2px}
.key.util{font-size:14px;color:var(--muted-foreground)}
.msg{min-height:20px;margin-top:14px;font-size:13px;text-align:center;color:var(--danger)}
.choices{display:grid;gap:12px}
.choice{display:flex;align-items:center;gap:16px;padding:16px;border-radius:var(--radius);border:1px solid var(--border);background:var(--background);color:inherit;text-decoration:none;transition:border-color .2s,transform .2s}
.choice:hover{border-color:var(--brand-blue);transform:translateY(-1px)}
.choice:focus-visible{outline:2px solid var(--brand-blue);outline-offset:2px}
.thumb{width:84px;height:48px;border-radius:6px;flex:none;position:relative;overflow:hidden;border:1px solid var(--border)}
.thumb i{position:absolute;left:10px;top:10px;height:5px;border-radius:3px;background:var(--brand-blue)}
.thumb i:nth-child(2){top:20px;width:44px;opacity:.5}
.thumb i:nth-child(3){top:29px;width:28px;opacity:.3}
.thumb.dark{background:linear-gradient(180deg,#0A0A0F,#1A1A2E)}
.thumb.light{background:linear-gradient(180deg,#FFFFFF,#F0F0F5)}
.choice b{display:block;font-size:16px;font-weight:600}
.choice span{font-size:13px;color:var(--muted-foreground)}
.foot{display:flex;justify-content:space-between;align-items:center;margin-top:18px;font-size:12px;color:var(--muted-foreground)}
.foot a{color:inherit}
.foot svg{width:14px;height:15px;vertical-align:-2px;color:var(--brand-blue);margin-right:6px}
[hidden]{display:none!important}
@media (prefers-reduced-motion:reduce){.dots.error .dot{animation:none}.choice:hover{transform:none}}