/* Interlock — authentication screens.
   Same Semantic tokens as the product pages. No new visual system. */
:root{
  --page:#07090c; --panel-a:#131417; --panel-b:#0e0f11;
  --nested-a:#16181b; --nested-b:#111214; --overlay:#151515;
  --heading:#f2f4f6; --primary:#eef1f4; --secondary:#cdd3d9;
  --muted:#a6acb3; --subtle:#969ca3; --faint:#5e646a;
  --hairline:rgba(255,255,255,.05); --soft:rgba(255,255,255,.09); --strong:rgba(255,255,255,.24);
  --fill-subtle:rgba(255,255,255,.05); --fill-raised:rgba(255,255,255,.10);
  --risk:#e0564a; --risk-text:#ff9086; --risk-edge:rgba(224,86,74,.42);
  --attention-text:#e9b862;
  --ok:#5cb890;
  --nav:#5b8cff;
  --r-sm:4px; --r-md:8px; --r-10:10px; --r-14:14px; --r-20:20px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--page);color:var(--primary);overflow-x:hidden;
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;
  display:grid;place-items:center;padding:24px}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-variant-numeric:tabular-nums}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
:focus-visible{outline:2px solid var(--nav);outline-offset:2px;border-radius:3px}

.wrap{width:100%;max-width:396px}
.wrap.wide{max-width:430px}
.brand{display:flex;align-items:center;gap:11px;margin-bottom:30px}
.brand .mk{width:32px;height:32px;border-radius:var(--r-10);background:var(--fill-raised);
  display:grid;place-items:center}
.brand .mk i{width:9px;height:9px;background:var(--heading);border-radius:2px;transform:rotate(45deg)}
.brand b{font-size:16px;font-weight:600;color:var(--heading);letter-spacing:-.01em}

.card{position:relative;border-radius:var(--r-20);border:1px solid var(--hairline);
  background:linear-gradient(180deg,var(--panel-a),var(--panel-b));padding:30px 30px 26px}
.card::before{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;
  background-image:radial-gradient(circle at 1.5px 1.5px,rgba(255,255,255,.5) 1.5px,transparent 0);
  background-size:6px 6px;opacity:.03}
h1{margin:0 0 6px;font-size:19px;font-weight:600;letter-spacing:-.01em;color:var(--heading)}
.sub{margin:0 0 24px;color:var(--muted);font-size:13px}

label{display:block;font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--muted);margin:0 0 7px}
.field{margin-bottom:16px}
.field.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
input{width:100%;height:40px;border-radius:var(--r-10);padding:0 12px;
  background:linear-gradient(180deg,var(--nested-a),var(--nested-b));
  border:1px solid rgba(255,255,255,.055);color:var(--primary);font-size:13.5px}
input::placeholder{color:var(--faint)}
input:focus{outline:none;border-color:rgba(91,140,255,.5)}
input.bad{border-color:var(--risk-edge)}
input.code{letter-spacing:.42em;text-align:center;font-size:17px;height:46px}
.msg{display:none;margin-top:6px;font-size:12px;color:var(--risk-text)}
.msg.on{display:block}
.help{margin-top:6px;font-size:12px;color:var(--muted)}

.btn{width:100%;height:42px;border-radius:var(--r-10);border:none;
  background:var(--heading);color:var(--page);font-size:14px;font-weight:500;
  transition:background .15s ease,transform .1s ease}
.btn:hover:not([disabled]){background:#fff}
.btn:active:not([disabled]){transform:translateY(1px)}
.btn[disabled]{opacity:.55;cursor:default;transform:none}
.btn.ghost{background:none;border:1px solid var(--strong);color:var(--secondary)}
.btn.ghost:hover:not([disabled]){background:var(--fill-subtle);color:var(--primary)}
.btn.link{background:none;border:none;color:var(--muted);height:auto;width:auto;
  font-size:12.5px;padding:0;font-weight:400}
.btn.link:hover{color:var(--primary);background:none}
.btns{display:flex;gap:10px;margin-top:4px}
.btns .btn{flex:1}

.err{display:none;margin-bottom:14px;padding:10px 12px;border-radius:var(--r-10);
  border:1px solid var(--risk-edge);background:rgba(224,86,74,.08);
  font-size:12.5px;color:var(--risk-text)}
.err.on{display:block}

.note{display:flex;align-items:center;gap:8px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--hairline);font-size:12px;color:var(--muted)}
.note i{width:6px;height:6px;border-radius:50%;background:var(--attention-text);flex:0 0 6px}
.alt{margin-top:16px;padding-top:16px;border-top:1px solid var(--hairline);
  font-size:12.5px;color:var(--muted);text-align:center}
.alt a,.alt button{color:var(--secondary);text-decoration:none}
.alt a:hover,.alt button:hover{color:var(--primary)}
.foot{margin-top:18px;text-align:center;font-size:11.5px;color:var(--faint)}
.foot a{color:var(--muted)}

/* auth entry choices */
.choice{display:flex;align-items:center;gap:14px;width:100%;text-align:left;
  padding:16px 18px;border-radius:var(--r-14);border:1px solid var(--hairline);
  background:linear-gradient(180deg,var(--nested-a),var(--nested-b));margin-bottom:12px;
  transition:border-color .15s ease,background .15s ease}
.choice:hover{border-color:var(--soft);background:var(--nested-a)}
.choice .ic{width:34px;height:34px;border-radius:var(--r-10);background:var(--fill-subtle);
  display:grid;place-items:center;color:var(--secondary);flex:0 0 34px;font-size:14px}
.choice .t{color:var(--primary);font-size:14px}
.choice .s{color:var(--muted);font-size:12px;margin-top:2px}
.choice .go{margin-left:auto;color:var(--faint)}

/* signup progress */
.steps{display:flex;align-items:center;gap:8px;margin-bottom:22px}
.steps .dot{height:3px;flex:1;border-radius:2px;background:var(--fill-subtle)}
.steps .dot.on{background:var(--strong)}
.steps .lbl{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--muted);
  flex:0 0 auto;margin-left:4px}
.step{display:none}
.step.on{display:block;animation:fade .2s ease}
@keyframes fade{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}

.done{text-align:center;padding:8px 0 4px}
.done .tick{width:44px;height:44px;border-radius:50%;margin:0 auto 18px;
  display:grid;place-items:center;font-size:20px;color:var(--ok);
  background:rgba(92,184,144,.12);border:1px solid rgba(92,184,144,.34)}