:root{
  --bg:#05070F;--card:rgba(13,18,33,.72);--stroke:rgba(148,163,184,.14);--stroke-2:rgba(148,163,184,.28);
  --text:#E6EDF7;--muted:#94A3B8;--dim:#64748B;
  --primary:#3B82F6;--primary-2:#2563EB;--cyan:#22D3EE;--violet:#8B5CF6;--pink:#F472B6;
  --ok:#34D399;--err:#F87171;--warn:#FBBF24;
  --r-sm:10px;--r-lg:24px;
  --font:'DM Sans',system-ui,sans-serif;--display:'Space Grotesk','DM Sans',sans-serif;--mono:'JetBrains Mono',ui-monospace,monospace;
  --ease:cubic-bezier(.22,1,.36,1);--spring:cubic-bezier(.34,1.56,.64,1);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body.auth{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:hidden}
.auth a{color:#93C5FD;text-decoration:none;transition:color .2s}
.auth a:hover{color:#fff}
.auth :focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* Fondo */
.auth-bg{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.aurora{position:absolute;width:60vmax;height:60vmax;border-radius:50%;filter:blur(90px);opacity:.45;mix-blend-mode:screen;animation:drift 22s var(--ease) infinite alternate}
.a1{background:radial-gradient(circle,var(--primary),transparent 60%);top:-20vmax;left:-15vmax}
.a2{background:radial-gradient(circle,var(--violet),transparent 60%);bottom:-25vmax;right:-10vmax;animation-delay:-7s}
.a3{background:radial-gradient(circle,var(--cyan),transparent 60%);top:30%;left:35%;width:40vmax;height:40vmax;opacity:.22;animation-delay:-14s}
@keyframes drift{50%{transform:translate(6vmax,-4vmax) scale(1.1)}100%{transform:translate(-4vmax,5vmax) scale(.95)}}
.grid{position:absolute;inset:0;background-image:linear-gradient(var(--stroke) 1px,transparent 1px),linear-gradient(90deg,var(--stroke) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse at 50% 40%,#000 20%,transparent 75%);mask-image:radial-gradient(ellipse at 50% 40%,#000 20%,transparent 75%)}
.noise{position:absolute;inset:0;opacity:.06;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}

/* Layout */
.auth-shell{position:relative;z-index:1;min-height:100dvh;display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(24px,4vw,64px);align-items:center;max-width:1200px;margin:0 auto;padding:clamp(20px,4vw,48px)}

/* Escenario / marca */
.auth-brand{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.auth-logo{font-family:var(--display);font-weight:700;font-size:30px;color:#fff!important;letter-spacing:-.03em;display:inline-flex;align-items:flex-start}
.auth-logo .dot{width:9px;height:9px;border-radius:50%;background:var(--primary);margin:4px 0 0 2px;box-shadow:0 0 12px var(--primary);animation:pulse 2.4s infinite}
.brand-title{font-family:var(--display);font-size:clamp(28px,3.4vw,44px);line-height:1.08;letter-spacing:-.03em;margin:0;font-weight:700}
.grad{background:linear-gradient(90deg,#93C5FD,var(--cyan),#C4B5FD,#93C5FD);background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 8s linear infinite}
@keyframes shimmer{to{background-position:300% 0}}
.stage{position:relative;width:min(340px,100%);aspect-ratio:1/1.05;display:grid;place-items:center}
.stage::before{content:"";position:absolute;inset:12%;border-radius:50%;background:conic-gradient(from 0deg,transparent,rgba(59,130,246,.35),transparent 40%);filter:blur(12px);animation:spin 10s linear infinite}
.stage::after{content:"";position:absolute;inset:18%;border-radius:50%;border:1px dashed var(--stroke-2);animation:spin 40s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.chip{position:absolute;z-index:2;font-family:var(--mono);font-size:12px;padding:6px 10px;border-radius:999px;background:rgba(15,23,42,.75);border:1px solid var(--stroke-2);backdrop-filter:blur(8px);white-space:nowrap;animation:bob 6s ease-in-out infinite}
.chip--rec{top:6%;left:-4%}
.chip--rec i{display:inline-block;width:8px;height:8px;border-radius:50%;background:#EF4444;margin-right:6px;animation:pulse 1.2s infinite}
.chip--sum{top:42%;right:-8%;color:var(--ok);animation-delay:-2s}
.chip--cards{bottom:8%;left:0;color:#C4B5FD;animation-delay:-4s}
@keyframes bob{50%{transform:translateY(-10px)}}
@keyframes pulse{50%{opacity:.35}}
.ticker{font-family:var(--mono);font-size:13px;color:var(--muted);min-height:3.2em;max-width:44ch;margin:0}
.ticker b{color:var(--cyan);font-weight:500}
.ticker .caret{display:inline-block;width:7px;height:1em;background:var(--cyan);vertical-align:-2px;margin-left:2px;animation:pulse 1s steps(1) infinite}

/* Tarjeta */
.auth-card{position:relative;isolation:isolate;overflow:hidden;width:100%;max-width:460px;min-width:0;justify-self:center;background:var(--card);border:1px solid var(--stroke);border-radius:var(--r-lg);padding:clamp(24px,3.5vw,40px);backdrop-filter:blur(18px) saturate(140%);box-shadow:0 30px 80px -20px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.04)}
.auth-card::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(500px circle at var(--mx,50%) var(--my,0%),rgba(59,130,246,.16),transparent 45%)}
.auth-card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;background:linear-gradient(140deg,rgba(96,165,250,.6),transparent 35%,transparent 65%,rgba(139,92,246,.5));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.eyebrow{font-family:var(--mono);font-size:12px;color:var(--cyan);letter-spacing:.04em}
.auth-card h1{font-family:var(--display);font-size:clamp(28px,3vw,36px);letter-spacing:-.03em;margin:6px 0}
.sub{color:var(--muted);margin:0 0 22px;font-size:14px;line-height:1.5}
.g-slot{width:100%;max-width:100%;min-width:0;min-height:44px;display:block}
.g-slot > div,.g-slot [role="button"]{width:100% !important;max-width:100% !important;min-width:0 !important;box-sizing:border-box}
.divider{display:flex;align-items:center;gap:12px;color:var(--dim);font-size:12px;margin:18px 0;font-family:var(--mono)}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--stroke-2),transparent)}

/* Campos con label flotante */
.field{position:relative;margin-bottom:14px}
.field input{width:100%;height:54px;padding:22px 52px 8px 14px;font:inherit;font-size:16px;color:var(--text);background:rgba(2,6,23,.55);border:1px solid var(--stroke-2);border-radius:var(--r-sm);outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
.field label{position:absolute;left:15px;top:17px;font-size:15px;color:var(--dim);pointer-events:none;transition:all .18s var(--ease)}
.field input:focus+label,.field input:not(:placeholder-shown)+label,.field input:-webkit-autofill+label,.field input:autofill+label{top:8px;font-size:11px;color:var(--cyan)}
.field input:focus{border-color:var(--primary);background:rgba(2,6,23,.75);box-shadow:0 0 0 4px rgba(59,130,246,.18),0 0 24px -4px rgba(59,130,246,.5)}
.field input[aria-invalid="true"]{border-color:var(--err);box-shadow:0 0 0 4px rgba(248,113,113,.15);animation:shake .35s}
.field input:-webkit-autofill{-webkit-text-fill-color:var(--text);-webkit-box-shadow:0 0 0 1000px #0B1222 inset;caret-color:var(--text);transition:background-color 9999s ease-out}
.eye{position:absolute;right:4px;top:5px;width:44px;height:44px;display:grid;place-items:center;border:0;background:transparent;color:var(--muted);cursor:pointer;border-radius:8px}
.eye svg[hidden]{display:none !important}
.eye:hover{color:#fff;background:rgba(148,163,184,.1)}
.rg-hint{font-size:12px;color:var(--dim);margin:6px 2px 0}
.rg-error{font-size:12px;color:var(--err);margin:6px 2px 0}
.rg-error::before{content:"! ";font-weight:700}
@keyframes shake{20%,60%{transform:translateX(-5px)}40%,80%{transform:translateX(5px)}}

/* Fuerza de contraseña */
.strength{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:8px}
.strength i{display:block;height:4px;border-radius:4px;background:var(--stroke-2);transition:background .3s,box-shadow .3s}
.strength[data-score="1"] i:nth-child(-n+1){background:var(--err)}
.strength[data-score="2"] i:nth-child(-n+2){background:var(--warn)}
.strength[data-score="3"] i:nth-child(-n+3){background:var(--primary)}
.strength[data-score="4"] i{background:var(--ok);box-shadow:0 0 10px var(--ok)}
.rules{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-wrap:wrap;gap:6px}
.rules li{font-family:var(--mono);font-size:11px;padding:3px 8px;border-radius:999px;border:1px solid var(--stroke-2);color:var(--dim);transition:all .2s}
.rules li.ok{color:var(--ok);border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.08)}

/* Checkbox */
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);cursor:pointer;margin-top:10px;line-height:1.4}
.check input{appearance:none;-webkit-appearance:none;flex:0 0 18px;height:18px;margin:1px 0 0;border:1.5px solid var(--stroke-2);border-radius:5px;background:rgba(2,6,23,.6);display:grid;place-items:center;cursor:pointer;transition:all .2s}
.check input::after{content:"";width:9px;height:5px;margin-top:-2px;border:2px solid #fff;border-top:0;border-right:0;transform:rotate(-45deg) scale(0);transition:transform .2s var(--spring)}
.check input:checked{background:var(--primary);border-color:var(--primary);box-shadow:0 0 12px rgba(59,130,246,.6)}
.check input:checked::after{transform:rotate(-45deg) scale(1)}
.check input[aria-invalid="true"]{border-color:var(--err)}
.row{display:flex;justify-content:space-between;align-items:center;margin:4px 0 18px;font-size:13px}
.row .check{margin:0}

/* Botón */
.btn-primary{position:relative;width:100%;height:52px;margin-top:16px;border:0;border-radius:12px;font:inherit;font-weight:600;font-size:16px;color:#fff;cursor:pointer;overflow:hidden;background:linear-gradient(135deg,var(--primary),var(--primary-2) 50%,var(--violet) 130%);box-shadow:0 10px 30px -10px rgba(59,130,246,.8),inset 0 1px 0 rgba(255,255,255,.25);transition:transform .2s var(--spring),box-shadow .2s,filter .2s}
.btn-primary::before{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-20deg);transition:left .7s var(--ease)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(59,130,246,.9)}
.btn-primary:hover::before{left:120%}
.btn-primary:active{transform:scale(.98)}
.btn-primary:disabled{cursor:progress;filter:saturate(.7)}
.btn-primary.is-loading{color:transparent}
.btn-primary.is-loading::after{content:"";position:absolute;inset:0;margin:auto;width:20px;height:20px;border-radius:50%;border:2.5px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .7s linear infinite}

/* Alertas y pie */
.auth-alert{display:flex;gap:10px;padding:12px 14px;margin-bottom:16px;border-radius:12px;font-size:13.5px;line-height:1.45;border:1px solid rgba(248,113,113,.35);background:rgba(127,29,29,.25);color:#FECACA;animation:drop .35s var(--spring)}
.auth-alert[hidden]{display:none}
.auth-alert.success{border-color:rgba(52,211,153,.35);background:rgba(6,78,59,.3);color:#A7F3D0}
@keyframes drop{from{opacity:0;transform:translateY(-8px) scale(.98)}}
.foot{margin:18px 0 0;text-align:center;font-size:13px;color:var(--dim)}
.legal{margin-top:24px;text-align:center;font-size:11px;color:var(--dim);font-family:var(--mono)}

/* Referido, overlay y confetti */
.referral-banner{margin-top:16px;padding:12px 14px;border-radius:12px;border:1px solid rgba(251,191,36,.35);background:linear-gradient(135deg,rgba(251,191,36,.12),rgba(244,114,182,.08));color:#FDE68A;font-size:13px}
.referral-banner p{margin:0}
.referral-banner[hidden]{display:none}
.loading-overlay{position:fixed;inset:0;z-index:50;display:none;place-items:center;gap:12px;background:rgba(5,7,15,.85);backdrop-filter:blur(10px);font-family:var(--mono);color:var(--cyan)}
.loading-overlay.active{display:grid}
.confetti{position:fixed;top:-14px;width:8px;height:14px;border-radius:2px;z-index:60;pointer-events:none;animation:fall var(--d,1.6s) var(--ease) forwards}
@keyframes fall{to{transform:translate(var(--x,0),105vh) rotate(var(--r,540deg))}}

/* Entrada escalonada */
.reveal{opacity:0;transform:translateY(14px);animation:rise .7s var(--ease) forwards;animation-delay:calc(var(--i,0) * 70ms + 120ms)}
@keyframes rise{to{opacity:1;transform:none}}

/* Mascota */
.mascot{position:relative;z-index:1;width:78%}
.robi{width:100%;height:auto;overflow:visible}
.robi *{transform-box:fill-box;transform-origin:center}
.rb-float{transform-box:view-box;animation:hover 4s ease-in-out infinite}
@keyframes hover{50%{transform:translateY(-8px)}}
.rb-shadow{animation:shadow 4s ease-in-out infinite}
@keyframes shadow{50%{transform:scaleX(.85);opacity:.2}}
.rb-pupils{transition:transform .18s ease-out;transform:translate(calc(var(--lx,0) * 7px),calc(var(--ly,0) * 5px))}
.rb-eye{transition:transform .12s}
.mascot.blink .rb-eye{transform:scaleY(.1)}
.rb-bulb{fill:var(--bulb,var(--bulb-strength,#3B82F6));transition:fill .3s}
.rb-bulb-glow{animation:pulse 2s infinite}
.rb-hands{transform-box:view-box;transform:translateY(110px);opacity:0;transition:transform .45s var(--spring),opacity .2s}
.rb-hand{transition:transform .35s var(--spring)}
.rb-arm,.rb-eyes{transition:opacity .2s}
.rb-happy,.rb-sad,.rb-zzz{opacity:0;transition:opacity .2s}
.mascot[data-state="shy"] .rb-hands,.mascot[data-state="peek"] .rb-hands{transform:none;opacity:1}
.mascot[data-state="shy"] .rb-arm,.mascot[data-state="peek"] .rb-arm{opacity:0}
.mascot[data-state="peek"] .rb-hand--r{transform:translate(16px,12px) rotate(20deg)}
.mascot[data-state="error"]{--bulb:#F87171}
.mascot[data-state="error"] .rb-head{animation:no .5s}
.mascot[data-state="error"] .rb-eyes{opacity:0}
.mascot[data-state="error"] .rb-sad{opacity:1}
@keyframes no{20%,60%{transform:rotate(-8deg)}40%,80%{transform:rotate(8deg)}}
.mascot[data-state="success"]{--bulb:#34D399}
.mascot[data-state="success"] .rb-eyes{opacity:0}
.mascot[data-state="success"] .rb-happy{opacity:1}
.mascot[data-state="success"] .rb-float{animation:jump .6s var(--spring) 2}
@keyframes jump{40%{transform:translateY(-26px)}}
.mascot[data-state="thinking"] .rb-antenna{animation:wiggle .4s infinite}
.mascot[data-state="thinking"] .rb-bulb-glow{animation-duration:.4s}
@keyframes wiggle{50%{transform:rotate(10deg)}}
.mascot[data-state="sleepy"] .rb-eye{transform:scaleY(.15)}
.mascot[data-state="sleepy"] .rb-zzz{opacity:1;animation:zzz 2.4s infinite}
@keyframes zzz{from{transform:translate(0,0);opacity:0}30%{opacity:1}to{transform:translate(14px,-22px);opacity:0}}

/* Responsive */
@media (max-width:900px){
  .auth-shell{
    grid-template-columns:1fr;
    gap:8px;
    align-items:start;
    padding:
      max(12px, env(safe-area-inset-top))
      max(16px, env(safe-area-inset-right))
      max(24px, env(safe-area-inset-bottom))
      max(16px, env(safe-area-inset-left));
  }
  .auth-brand{align-items:center;gap:4px}
  .auth-logo{font-size:22px}
  .brand-title,.ticker,.chip{display:none}
  .stage{width:92px}
  .mascot{width:100%}
  .auth-card{padding:20px 18px 18px;border-radius:20px}
  .auth-card h1{font-size:28px;margin:0 0 4px}
  .sub{margin:0 0 14px}
  .check{min-height:44px;align-items:center}
  .row{flex-wrap:wrap;gap:0 12px}
  .row a{min-height:44px;display:inline-flex;align-items:center}
  body.register-has-referral .auth-brand{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}