:root{
  --bg-0:#0a0d1a;
  --bg-1:#0f1424;
  --surface:rgba(255,255,255,.04);
  --surface-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.09);
  --text:#eef1f7;
  --muted:#9aa3b8;
  --radius:18px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  min-height:100dvh;
  background:
    radial-gradient(1100px 560px at 50% -8%, color-mix(in srgb, var(--brand) 26%, transparent), transparent 62%),
    radial-gradient(900px 500px at 100% 108%, color-mix(in srgb, var(--brand-2) 16%, transparent), transparent 66%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  color:var(--text);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;
  padding:max(34px,env(safe-area-inset-top)) 18px calc(34px + env(safe-area-inset-bottom));
}

.glow{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(600px 300px at 15% 12%, color-mix(in srgb,var(--brand) 10%,transparent), transparent 70%),
    radial-gradient(700px 340px at 85% 92%, color-mix(in srgb,var(--brand-2) 12%,transparent), transparent 72%);
}

.shell{width:100%;max-width:540px;margin:auto;display:flex;flex-direction:column;gap:30px;animation:rise .6s ease both}

/* ---- Marca ---- */
.brand{text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.brand-mark{
  width:76px;height:76px;border-radius:22px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(140deg,var(--brand),color-mix(in srgb,var(--brand) 45%,var(--brand-2)));
  box-shadow:0 18px 44px -14px color-mix(in srgb,var(--brand) 75%,transparent), inset 0 1px 0 rgba(255,255,255,.25);
}
.brand-logo-wrap{
  display:grid;place-items:center;
  padding:16px 22px;border-radius:24px;
  background:radial-gradient(120% 120% at 50% 0%, color-mix(in srgb,var(--brand) 14%,transparent), rgba(255,255,255,.03));
  border:1px solid var(--line);
  box-shadow:0 20px 50px -24px color-mix(in srgb,var(--brand) 60%,transparent), inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(8px);
}
.brand-logo{max-height:120px;max-width:min(260px,72vw);object-fit:contain;display:block;
  filter:drop-shadow(0 8px 22px rgba(0,0,0,.45))}
.brand h1{font-family:"Sora",sans-serif;font-weight:800;font-size:clamp(26px,6.5vw,36px);margin:0;letter-spacing:-.025em;
  background:linear-gradient(180deg,#fff, color-mix(in srgb,var(--text) 70%, var(--brand) 8%));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.tagline{margin:0;color:var(--muted);font-size:15px;max-width:40ch;line-height:1.55}

/* ---- Tarjeta ---- */
.card{
  position:relative;
  background:linear-gradient(180deg, color-mix(in srgb,#fff 5%,transparent), color-mix(in srgb,#fff 2%,transparent));
  border:1px solid var(--line);
  border-radius:26px;
  padding:26px;
  backdrop-filter:blur(16px);
  box-shadow:0 40px 90px -46px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  display:flex;flex-direction:column;gap:24px;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:26px;padding:1px;pointer-events:none;
  background:linear-gradient(160deg, color-mix(in srgb,var(--brand) 55%,transparent), transparent 40%, color-mix(in srgb,var(--brand-2) 40%,transparent));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:.6;
}
.step{display:flex;flex-direction:column;gap:12px}
.step-label{display:flex;align-items:center;gap:9px;font-family:"Sora",sans-serif;font-size:13.5px;font-weight:600;color:#c3cad9;letter-spacing:.01em}
.step-num{
  width:22px;height:22px;border-radius:7px;display:grid;place-items:center;flex:0 0 auto;
  font-size:12px;font-weight:700;color:#fff;
  background:linear-gradient(140deg,var(--brand),color-mix(in srgb,var(--brand) 50%,var(--brand-2)));
  box-shadow:0 6px 14px -6px color-mix(in srgb,var(--brand) 80%,transparent);
}

/* ---- Plataformas ---- */
.platforms{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:11px}
.tile{
  --tile:var(--brand);
  position:relative;cursor:pointer;overflow:hidden;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;
  min-height:84px;padding:14px 8px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:16px;
  color:var(--text);font-family:inherit;
  transition:transform .16s ease,border-color .16s ease,background .16s ease,box-shadow .22s ease;
}
.tile::after{content:"";position:absolute;inset:0;background:radial-gradient(80% 60% at 50% 0%, color-mix(in srgb,var(--tile) 20%,transparent), transparent 70%);opacity:0;transition:opacity .2s ease}
.tile:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--tile) 40%,var(--line))}
.tile:hover::after{opacity:.5}
.tile-dot{width:30px;height:30px;border-radius:10px;background:var(--tile);box-shadow:0 8px 18px -6px var(--tile), inset 0 1px 0 rgba(255,255,255,.3)}
.tile-logo{height:30px;max-width:64px;object-fit:contain;position:relative;z-index:1}
.tile-name{font-size:13px;font-weight:600;line-height:1.2;text-align:center;position:relative;z-index:1}
.tile[aria-selected="true"]{
  border-color:color-mix(in srgb,var(--tile) 70%,transparent);
  background:color-mix(in srgb,var(--tile) 16%,var(--surface-2));
  box-shadow:0 0 0 1px color-mix(in srgb,var(--tile) 55%,transparent),0 16px 34px -18px var(--tile);
}
.tile:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

/* ---- Campo ---- */
.field{
  width:100%;padding:16px 17px;
  background:color-mix(in srgb,var(--bg-0) 88%, #000);
  border:1px solid var(--line);
  border-radius:15px;
  color:var(--text);font-size:16px;font-family:inherit;
  transition:border-color .15s ease,box-shadow .15s ease,background .15s ease;
}
.field::placeholder{color:#5c657b}
.field:focus{outline:none;border-color:var(--brand);background:var(--bg-0);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 24%,transparent)}

/* ---- Botón ---- */
.cta{
  position:relative;cursor:pointer;border:none;overflow:hidden;
  padding:17px;border-radius:15px;
  font-family:"Sora",sans-serif;font-size:16px;font-weight:700;color:#fff;letter-spacing:.01em;
  background:linear-gradient(135deg,var(--brand),color-mix(in srgb,var(--brand) 40%,var(--brand-2)));
  box-shadow:0 18px 34px -14px color-mix(in srgb,var(--brand) 85%,transparent), inset 0 1px 0 rgba(255,255,255,.25);
  transition:transform .12s ease,opacity .15s ease,filter .15s ease,box-shadow .2s ease;
  display:flex;align-items:center;justify-content:center;gap:10px;
}
.cta:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 22px 40px -14px color-mix(in srgb,var(--brand) 90%,transparent)}
.cta:active:not(:disabled){transform:translateY(0)}
.cta:disabled{opacity:.45;cursor:not-allowed}
.cta.loading .cta-text{opacity:.75}
.spinner{display:none;width:18px;height:18px;border-radius:50%;border:2.5px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .7s linear infinite}
.cta.loading .spinner{display:inline-block}

/* ---- Resultado ---- */
.result{animation:rise .35s ease both}
.res-card{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:var(--surface-2)}
.res-head{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;margin-bottom:14px}
.res-head .badge{color:#fff;background:color-mix(in srgb,var(--brand) 40%,transparent);padding:3px 10px;border-radius:999px;font-weight:600}

.code-box{
  position:relative;border-radius:16px;padding:22px;text-align:center;
  background:var(--bg-0);
  border:1px solid transparent;
  background-clip:padding-box;
}
.code-box::before{
  content:"";position:absolute;inset:0;border-radius:16px;padding:1px;z-index:0;
  background:conic-gradient(from var(--a,0deg),var(--brand),var(--brand-2),var(--brand));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  animation:rotate 6s linear infinite;
}
.code{position:relative;z-index:1;font-family:"Sora",sans-serif;font-weight:800;font-size:clamp(34px,11vw,52px);letter-spacing:.14em;color:#fff}
.copy{
  position:relative;z-index:1;margin-top:14px;display:inline-flex;align-items:center;gap:7px;
  background:var(--surface-2);border:1px solid var(--line);color:var(--text);
  padding:9px 16px;border-radius:999px;font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;
  transition:background .15s ease}
.copy:hover{background:color-mix(in srgb,var(--brand) 20%,var(--surface-2))}
.copy.done{color:#4ade80}

.link-btn{
  display:flex;align-items:center;justify-content:center;gap:9px;
  text-decoration:none;color:#fff;font-family:"Sora",sans-serif;font-weight:700;font-size:16px;
  padding:16px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand),color-mix(in srgb,var(--brand) 45%,var(--brand-2)));
  box-shadow:0 16px 30px -14px color-mix(in srgb,var(--brand) 80%,transparent)}

.res-meta{margin-top:14px;color:var(--muted);font-size:12.5px;line-height:1.5}
.res-meta strong{color:#c7cede;font-weight:600}

.mail-subject{font-family:"Sora",sans-serif;font-weight:600;font-size:15px;color:#fff;margin-bottom:12px;line-height:1.35}
.mail-body{
  background:var(--bg-0);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;max-height:52vh;overflow:auto;
  font-size:14.5px;line-height:1.6;color:#d7ddea;text-align:left;
  white-space:normal;word-break:break-word;
}
.mail-body a{color:var(--brand-2);font-weight:600}
.toggle-body{
  margin-top:14px;display:inline-block;background:transparent;border:1px solid var(--line);
  color:var(--muted);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;
  font-family:inherit;cursor:pointer}
.toggle-body:hover{border-color:var(--brand);color:var(--text)}
.code-box + .toggle-body{margin-top:16px}
.toggle-body + .mail-body{margin-top:12px}
.mail-body .code-hl{
  color:#fff;background:color-mix(in srgb,var(--brand) 34%,transparent);
  padding:1px 7px;border-radius:6px;font-weight:700;letter-spacing:.06em;
}

.notice{
  display:flex;gap:12px;align-items:flex-start;
  border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;background:var(--surface-2)}
.notice.err{border-color:color-mix(in srgb,#f87171 45%,transparent)}
.notice svg{flex:0 0 auto;margin-top:1px}
.notice p{margin:0;font-size:14px;color:var(--muted)}

.foot{display:flex;align-items:center;justify-content:center;gap:9px;text-align:center;color:var(--muted);font-size:12.5px;opacity:.8;font-family:"Sora",sans-serif;letter-spacing:.02em}
.foot-dot{width:6px;height:6px;border-radius:50%;background:linear-gradient(140deg,var(--brand),var(--brand-2));box-shadow:0 0 10px color-mix(in srgb,var(--brand) 70%,transparent)}

/* ---- Animaciones ---- */
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes rotate{to{--a:360deg}}
@property --a{syntax:'<angle>';inherits:false;initial-value:0deg}

@media (max-width:420px){
  .card{padding:20px}
  .platforms{grid-template-columns:repeat(auto-fill,minmax(94px,1fr))}
  .brand-logo{max-height:96px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}