:root{
  --ink:#0A0A0A; --paper:#F5F4F0; --chalk:#FFFFFF; --ember:#FF5A1F;
  --ink-2:#121212; --ink-3:#171717;
  --rule:rgba(255,255,255,.10); --rule-2:rgba(255,255,255,.18);
  --mute:rgba(245,244,240,.60); --mute-2:rgba(245,244,240,.34);
  --display:'Space Grotesk',-apple-system,BlinkMacSystemFont,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
  --ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--ink);color:var(--chalk);font-family:var(--display);font-size:16px;
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100vh;position:relative}
::selection{background:var(--ember);color:var(--ink)}
[hidden]{display:none!important}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
.wrap{max-width:74rem;margin:0 auto;padding:0 clamp(1.25rem,4vw,2.5rem)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ember);font-weight:500}

/* fondo logo watermark */
.bg-logo{position:fixed;inset:0;display:grid;place-items:center;z-index:0;pointer-events:none}
.bg-logo img{width:min(84vw,860px);height:auto;opacity:.28;filter:invert(1);transform-origin:center;animation:spin 90s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
body>*:not(.bg-logo){position:relative;z-index:1}

/* masthead */
.masthead{position:sticky;top:0;z-index:20;background:rgba(10,10,10,.78);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--rule)}
.masthead .wrap{display:flex;align-items:center;justify-content:space-between;padding:.9rem clamp(1.25rem,4vw,2.5rem)}
.wordmark{display:inline-flex;align-items:center;gap:.6rem;font-size:19px;font-weight:700;letter-spacing:-.02em;text-decoration:none;color:var(--chalk)}
.wordmark .light{font-weight:300}
.logo{width:32px;height:32px;object-fit:contain;filter:invert(1)}
.reset{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);
  border:1px solid var(--rule);padding:.45rem .8rem;border-radius:999px;transition:.2s}
.reset:hover{color:var(--chalk);border-color:var(--rule-2)}

/* intro */
.stage{padding:clamp(2.5rem,5vw,4.5rem) 0 5rem}
.intro{text-align:center;max-width:44rem;margin:0 auto clamp(2rem,4vw,3rem)}
.intro h1{font-size:clamp(2.3rem,1.2rem+4.6vw,4.4rem);line-height:.98;letter-spacing:-.035em;font-weight:700;margin:1.1rem 0 1rem}
.intro h1 em{font-style:normal;color:var(--ember)}
.intro p{color:var(--mute);font-size:clamp(1rem,.95rem+.4vw,1.2rem);max-width:40ch;margin:0 auto}

/* stepper */
.steps{display:flex;justify-content:center;gap:clamp(1rem,3vw,3rem);list-style:none;margin:0 auto 2.2rem;
  max-width:52rem;flex-wrap:wrap}
.steps li{display:flex;align-items:center;gap:.55rem;font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--mute-2);transition:color .4s}
.steps li .dot{width:11px;height:11px;border-radius:50%;border:1.5px solid var(--rule-2);transition:.4s}
.steps li.active{color:var(--chalk)}
.steps li.active .dot{border-color:var(--ember);box-shadow:0 0 0 4px rgba(255,90,31,.16)}
.steps li.done{color:var(--paper)}
.steps li.done .dot{background:var(--ember);border-color:var(--ember)}

/* builder layout */
.builder{display:grid;grid-template-columns:1.55fr .9fr;gap:clamp(1.2rem,2.5vw,2rem);align-items:start}

/* browser window */
.browser{border:1px solid var(--rule-2);border-radius:16px;overflow:hidden;background:#000;
  box-shadow:0 40px 90px -40px rgba(0,0,0,.9)}
.chrome{display:flex;align-items:center;gap:.5rem;padding:.7rem .9rem;background:var(--ink-3);border-bottom:1px solid var(--rule)}
.tl{width:11px;height:11px;border-radius:50%;display:inline-block}
.tl-r{background:#ff5f57}.tl-y{background:#febc2e}.tl-g{background:#28c840}
.url{margin-left:.8rem;font-family:var(--mono);font-size:12px;color:var(--mute);background:#000;
  padding:.25rem .8rem;border-radius:6px;flex:1;max-width:60%}
.screen{position:relative;aspect-ratio:16/10.5;background:var(--ink);overflow:hidden}

/* boot state */
.boot{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;text-align:center;transition:opacity .5s}
.boot.gone{opacity:0;pointer-events:none}
.boot-logo{width:110px;height:auto;opacity:.55;filter:invert(1);transform-origin:center;animation:spin 40s linear infinite}
.boot-txt{font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute-2)}
.boot-hint{color:var(--mute);font-size:.9rem}
.boot-hint b{color:var(--ember)}

/* rendered site */
.site{position:absolute;inset:0;padding:clamp(.7rem,1.6vw,1.2rem);display:flex;flex-direction:column;gap:.7rem;overflow:hidden}
.site>*{opacity:0;transform:translateY(14px);animation:rise .5s var(--ease) forwards}
.site>*:nth-child(2){animation-delay:.08s}
.site>*:nth-child(3){animation-delay:.16s}
.site>*:nth-child(4){animation-delay:.24s}
.site>*:nth-child(5){animation-delay:.32s}
@keyframes rise{to{opacity:1;transform:none}}

/* wireframe */
.wf-nav{display:flex;align-items:center;justify-content:space-between}
.wf-logo{width:34px;height:12px;border-radius:4px;background:var(--rule-2)}
.wf-navlinks{display:flex;gap:.5rem}
.wf-navlinks i{width:24px;height:7px;border-radius:3px;background:var(--rule)}
.wf-hero{flex:1;display:flex;flex-direction:column;justify-content:center;gap:.6rem;padding:1rem;
  border:1px dashed var(--rule);border-radius:10px}
.wf-line{height:14px;border-radius:5px;background:linear-gradient(90deg,var(--rule),var(--rule-2),var(--rule));
  background-size:200% 100%;animation:shim 1.6s linear infinite}
.wf-line.w60{width:60%}.wf-line.w40{width:40%}
.wf-btn{width:110px;height:26px;border-radius:8px;background:var(--rule-2);margin-top:.3rem}
.wf-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem}
.wf-card{height:52px;border-radius:8px;background:var(--ink-3);border:1px solid var(--rule)}
.wf-foot{height:16px;border-radius:5px;background:var(--rule)}
@keyframes shim{to{background-position:-200% 0}}

/* stage 2 — real site */
.s-nav{display:flex;align-items:center;justify-content:space-between;font-size:.75rem}
.s-logo{font-weight:700;letter-spacing:-.02em}
.s-links{color:var(--mute);font-family:var(--mono);font-size:.62rem;letter-spacing:.05em}
.s-hero{flex:1;display:grid;grid-template-columns:1.1fr .9fr;gap:.9rem;align-items:center;
  background:linear-gradient(135deg,var(--ink-2),var(--ink-3));border-radius:12px;padding:clamp(.8rem,1.8vw,1.4rem)}
.s-eb{font-family:var(--mono);font-size:.55rem;letter-spacing:.2em;color:var(--ember)}
.s-hero h3{font-size:clamp(1rem,.6rem+1.4vw,1.7rem);line-height:1.02;letter-spacing:-.02em;margin:.35rem 0}
.s-hero p{color:var(--mute);font-size:.72rem;line-height:1.4}
.s-cta{display:inline-block;margin-top:.5rem;background:var(--ember);color:var(--ink);font-weight:600;
  font-size:.72rem;padding:.4rem .9rem;border-radius:999px}
.s-form{display:flex;flex-direction:column;gap:.5rem;background:#000;border:1px solid var(--rule);border-radius:10px;padding:.8rem}
.s-field{height:24px;border-radius:6px;background:var(--ink-3);border:1px solid var(--rule);
  animation:fieldin .5s var(--ease) backwards}
.s-field:nth-child(2){animation-delay:.12s}
.s-submit{height:26px;border-radius:6px;background:var(--ember);color:var(--ink);font-weight:600;font-size:.72rem;
  display:grid;place-items:center;animation:fieldin .5s .24s var(--ease) backwards}
@keyframes fieldin{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:none}}
.s-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem}
.s-card{background:var(--ink-2);border:1px solid var(--rule);border-radius:8px;padding:.6rem;font-size:.62rem}
.s-card b{display:block;margin-bottom:.3rem}
.s-card i{display:block;height:6px;width:70%;background:var(--rule);border-radius:3px}

/* stage 3 — metrics */
.m-panel{background:linear-gradient(160deg,#0e0e0e,#151515);border:1px solid var(--rule-2);border-radius:12px;
  padding:clamp(.8rem,1.8vw,1.3rem);display:flex;flex-direction:column;gap:.8rem}
.m-head{display:flex;align-items:center;gap:.5rem;font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--mute)}
.m-head .live{width:8px;height:8px;border-radius:50%;background:var(--ember);animation:pulse 1.3s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,90,31,.5)}50%{box-shadow:0 0 0 6px rgba(255,90,31,0)}}
.m-row{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem}
.m-kpi{background:#000;border:1px solid var(--rule);border-radius:9px;padding:.7rem .8rem}
.m-kpi b{font-size:clamp(1.2rem,.8rem+1.4vw,2rem);font-weight:700;letter-spacing:-.02em;color:var(--chalk);display:block;line-height:1}
.m-kpi i{font-style:normal;font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mute-2)}
.m-kpi.acc b{color:var(--ember)}
.m-low{display:grid;grid-template-columns:1.4fr .9fr;gap:.7rem;align-items:end}
.m-bars{display:flex;align-items:flex-end;gap:.4rem;height:70px;background:#000;border:1px solid var(--rule);border-radius:9px;padding:.6rem}
.m-bars span{flex:1;border-radius:4px 4px 0 0;background:linear-gradient(var(--ember),#7a2a10);height:0;animation:grow .9s var(--ease) forwards}
.m-db{background:#000;border:1px solid var(--rule);border-radius:9px;padding:.7rem;display:flex;align-items:center;gap:.55rem;font-size:.64rem;color:var(--mute)}
.m-db svg{width:22px;height:22px;fill:none;stroke:var(--ember);stroke-width:2}
@keyframes grow{to{height:var(--h)}}

/* coderain overlay */
.coderain{position:absolute;inset:0;background:rgba(5,5,5,.94);z-index:5;padding:clamp(.9rem,2vw,1.4rem);overflow:hidden}
.coderain pre{font-family:var(--mono);font-size:clamp(9px,1.1vw,12px);line-height:1.5;color:#7dffb0;white-space:pre-wrap;
  text-shadow:0 0 8px rgba(125,255,176,.25)}
.coderain pre .k{color:var(--ember)}.coderain pre .s{color:#e6d06a}.coderain pre .c{color:var(--mute-2)}
.coderain .cursor{display:inline-block;width:8px;height:1.05em;background:#7dffb0;vertical-align:-2px;animation:blink .9s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* controls */
.controls{display:flex;flex-direction:column;gap:.8rem;position:sticky;top:5rem}
.build-btn{display:flex;align-items:center;gap:.9rem;text-align:left;background:var(--ink-2);border:1px solid var(--rule);
  border-radius:14px;padding:1rem 1.1rem;transition:transform .15s var(--ease),border-color .2s,background .2s;position:relative}
.build-btn .num{font-family:var(--mono);font-size:1.25rem;color:var(--ember);font-weight:600}
.build-btn .bt{display:flex;flex-direction:column;line-height:1.2}
.build-btn .bt b{font-size:1.02rem;font-weight:600}
.build-btn .bt i{font-style:normal;color:var(--mute);font-size:.82rem}
.build-btn .lock{margin-left:auto;font-size:.9rem;filter:grayscale(1);opacity:.6}
.build-btn:not(:disabled):hover{transform:translateY(-2px);border-color:var(--rule-2);background:var(--ink-3)}
.build-btn.ready{border-color:rgba(255,90,31,.5);box-shadow:0 0 0 3px rgba(255,90,31,.12)}
.build-btn.ready .num{animation:nudge 1.4s var(--ease) infinite}
@keyframes nudge{0%,100%{transform:translateX(0)}50%{transform:translateX(3px)}}
.build-btn:disabled{opacity:.5;cursor:not-allowed}
.build-btn.done{opacity:1;border-color:var(--rule)}
.build-btn.done .num{color:var(--paper)}
.build-btn.done .lock{content:"";}
.build-btn.done .lock::after{content:"✓";filter:none;color:var(--ember)}
.build-btn.busy{pointer-events:none}
.build-btn.busy .bt i::after{content:" · construyendo…";color:var(--ember)}

/* botón siguiente paso */
.next-step{display:flex;justify-content:center;width:100%;font-size:1.05rem;padding:1rem;
  background:rgba(255,90,31,.08);border:2px solid var(--ember);color:var(--ember);border-radius:999px;
  text-decoration:none;animation:nudge 1.4s var(--ease) infinite}
.next-step:hover{background:rgba(255,90,31,.18);transform:translateY(-1px)}

/* guía: texto verde dentro del botón activo, a la derecha y centrado (todas las pantallas) */
.guide,.guide-1,.guide-2,.guide-3{
  position:absolute;top:0;right:1.2rem;bottom:0;left:auto;margin:0;
  display:flex;flex-direction:row;align-items:center;justify-content:flex-end;
  white-space:nowrap;pointer-events:none;z-index:6}
.guide .g-arrow{display:none}
.guide .g-txt{font-family:var(--mono);font-weight:700;font-size:1.12rem;letter-spacing:.05em;text-transform:uppercase;
  color:#25d366;text-shadow:0 0 12px rgba(37,211,102,.45);animation:pulseTxt 1.15s ease infinite}
@keyframes pulseTxt{0%,100%{opacity:1}50%{opacity:.5}}

/* final CTA */
.finalcard{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:1.5rem;
  background:rgba(6,6,6,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  opacity:0;animation:fade .5s forwards}
@keyframes fade{to{opacity:1}}
.fc-inner{max-width:36rem;text-align:center;background:linear-gradient(160deg,var(--ink-2),#0c0c0c);
  border:1px solid var(--rule-2);border-radius:22px;padding:clamp(1.8rem,4vw,3rem);
  box-shadow:0 50px 120px -40px #000;transform:scale(.94);animation:pop .55s .05s var(--ease) forwards}
@keyframes pop{to{transform:scale(1)}}
.fc-inner h2{font-size:clamp(1.5rem,1rem+2vw,2.4rem);line-height:1.02;letter-spacing:-.03em;margin:.8rem 0}
.fc-inner h2 em{font-style:normal;color:var(--ember)}
.fc-inner p{color:var(--mute);max-width:38ch;margin:0 auto 1.6rem}
.btn.cta{background:#25d366;color:#fff;font-weight:600;font-size:1.08rem;padding:1rem 1.8rem;border-radius:999px;
  text-decoration:none;transition:transform .15s var(--ease),background .2s}
.btn.cta:hover{transform:translateY(-2px);background:#1fbe5b}
.fc-fine{margin-top:1rem !important;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute-2)}

/* footer */
footer{border-top:1px solid var(--rule);padding:2.4rem 0 3rem;color:var(--mute);font-size:.88rem;margin-top:3rem}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;align-items:center}
.flinks{display:inline-flex;gap:1.4rem}
footer a{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;color:var(--mute)}
footer a:hover{color:var(--ember)}

@media(max-width:880px){
  .builder{grid-template-columns:1fr}
  .controls{position:static;flex-direction:row;flex-wrap:wrap}
  .build-btn{flex:1;min-width:14rem}
}
@media(max-width:560px){
  .steps{gap:.8rem}.steps li .lbl{display:none}
  .build-btn{min-width:100%}
}