/* ======================================================
   CÓDIGO IMPACTO · Workbook
   Sistema de diseño amoldado a la landing oficial
   Montserrat · paleta violeta · verde = desbloqueado
   ====================================================== */

:root{
  --ink:#0B0717;
  --ink-2:#120A26;
  --surface:#1A1138;
  --surface-2:#221646;
  --line:#2E2154;

  --violet:#7C3AED;
  --violet-br:#9D5CFF;
  --violet-gl:#B388FF;
  --lilac:#C9B8FF;

  --cream:#F5F1FF;
  --body:#CFC8E6;
  --muted:#948CB3;

  --green:#4ADE80;     /* desbloqueado / éxito */
  --rose:#FB7185;      /* falta / borrar */
  --amber:#F5B14C;

  --font:'Montserrat',system-ui,sans-serif;

  --r-card:22px;
  --r-btn:16px;
  --r-chip:999px;

  --shadow-soft:0 18px 50px -22px rgba(0,0,0,.75);
  --shadow-glow:0 18px 60px -18px rgba(124,58,237,.65);

  --maxw:1040px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-weight:500;
  color:var(--body);
  background:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
/* glows ambiente (como la landing) */
body::before,body::after{
  content:"";position:fixed;border-radius:50%;filter:blur(120px);z-index:0;pointer-events:none;
}
body::before{width:560px;height:560px;background:radial-gradient(circle,#6D28D9,transparent 70%);top:-200px;right:-180px;opacity:.45}
body::after{width:480px;height:480px;background:radial-gradient(circle,#4C1D95,transparent 70%);bottom:-160px;left:-220px;opacity:.35}

a{color:inherit}
::selection{background:var(--violet-gl);color:var(--ink)}

h1,h2,h3,h4{color:var(--cream);letter-spacing:-.02em;font-weight:800;line-height:1.14}
.accent{background:linear-gradient(100deg,var(--violet-br),var(--violet-gl));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- EYEBROW (píldora) ---------- */
.eyebrow,.block-eyebrow,.leap-eyebrow,.cta-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.72rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--lilac);
  padding:8px 16px;border:1px solid var(--line);border-radius:var(--r-chip);background:rgba(124,58,237,.08);
}
.eyebrow::before,.block-eyebrow::before,.leap-eyebrow::before,.cta-eyebrow::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--violet-br);box-shadow:0 0 12px var(--violet-br);animation:pulse 2s ease-in-out infinite;
}

/* ---------- RAIL FIJO ---------- */
.rail{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:24px;
  padding:12px clamp(16px,4vw,40px);
  background:rgba(11,7,23,.8);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.rail-brand{display:flex;align-items:center;gap:10px}
.rail-lock{color:var(--violet-br);font-size:18px}
.rail-name{font-weight:700;letter-spacing:.14em;font-size:13px;color:var(--muted)}
.rail-name strong{color:var(--cream);font-weight:900}
.rail-progress{display:flex;align-items:center;gap:14px;margin-left:auto;flex-wrap:wrap}
.rail-codes{display:flex;gap:6px}
.rail-code{
  font-weight:800;font-variant-numeric:tabular-nums;font-size:12px;
  width:30px;height:30px;display:grid;place-items:center;border-radius:9px;
  border:1px solid var(--line);color:var(--muted);transition:.45s;
}
.rail-code.is-unlocked{color:var(--ink);background:var(--green);border-color:var(--green);box-shadow:0 0 16px rgba(74,222,128,.5)}
.rail-code--leap.is-unlocked{background:var(--violet-gl);border-color:var(--violet-gl);box-shadow:0 0 18px rgba(179,136,255,.6)}
.rail-bar{width:120px;height:5px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.rail-bar-fill{height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--violet),var(--green));transition:width .6s cubic-bezier(.2,.8,.2,1)}
.rail-count{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.rail-count strong{color:var(--cream)}
.rail-menu{
  font-size:11px;font-weight:700;letter-spacing:.05em;
  background:transparent;border:1px solid var(--line);color:var(--muted);
  padding:7px 12px;border-radius:10px;cursor:pointer;transition:.2s;
}
.rail-menu:hover{border-color:var(--rose);color:var(--rose)}

/* ---------- HERO ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(60px,11vw,120px) clamp(16px,4vw,40px) clamp(48px,8vw,84px)}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(680px 420px at 78% 12%,rgba(124,58,237,.30),transparent 65%);
}
.hero-inner{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto}
.hero-title{
  font-weight:900;font-size:clamp(46px,10vw,104px);line-height:.94;margin:22px 0 0;letter-spacing:-.03em;
}
.hero-title span{display:inline-block;background:linear-gradient(100deg,var(--violet-br),var(--violet-gl));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{max-width:560px;font-size:clamp(16px,2.1vw,20px);color:var(--body);margin:24px 0 0}
.hero-question{
  max-width:600px;margin:28px 0 34px;font-style:italic;font-weight:500;
  font-size:clamp(17px,2.3vw,22px);color:var(--cream);
  border-left:3px solid var(--violet);padding-left:18px;
}
.hero-saved{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--green);margin-top:18px;min-height:16px}

/* ---------- BOTONES ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:inherit;font-weight:800;font-size:1rem;letter-spacing:.02em;
  padding:16px 32px;border-radius:var(--r-btn);cursor:pointer;border:1px solid transparent;
  text-decoration:none;transition:transform .18s ease,box-shadow .18s,filter .18s,background .2s;
}
.btn--primary{background:linear-gradient(100deg,var(--violet),var(--violet-br));color:#fff;box-shadow:var(--shadow-glow)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 22px 70px -16px rgba(157,92,255,.8);filter:brightness(1.06)}
.btn--ghost{background:rgba(124,58,237,.10);border-color:var(--violet);color:var(--lilac)}
.btn--ghost:hover{background:rgba(124,58,237,.22);color:var(--cream)}
.btn:focus-visible{outline:3px solid var(--violet-gl);outline-offset:3px}

/* ---------- BLOQUES ---------- */
main{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,40px) 80px}
.block{padding:60px 0;border-top:1px solid var(--line);scroll-margin-top:80px}
.block-title{font-weight:800;font-size:clamp(26px,4.5vw,40px);margin:18px 0 30px}

.problems{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.problem{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:border-color .2s,transform .2s}
.problem:hover{border-color:var(--violet);transform:translateY(-3px)}
.problem-num{color:var(--violet-br);font-size:13px;font-weight:900}
.problem h3{font-size:18px;font-weight:700;margin:10px 0 8px}
.problem p{color:var(--body);font-size:14px}

.takeaway{margin-top:24px;background:radial-gradient(ellipse at 50% 0%,rgba(124,58,237,.16),transparent 60%),var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px}
.takeaway-label{font-size:.72rem;font-weight:700;letter-spacing:.16em;color:var(--green);text-transform:uppercase;margin:0 0 12px}
.takeaway ul{margin:0;padding-left:20px}
.takeaway li{margin:6px 0}
.takeaway-rule{margin:18px 0 0;font-size:13px;color:var(--muted);font-style:italic}

/* ---------- CÓDIGOS ---------- */
.code{
  position:relative;padding:44px clamp(18px,3vw,38px);margin-top:46px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .5s,box-shadow .5s,background .3s;scroll-margin-top:80px;
}
.code:hover{border-color:var(--violet)}
.code.is-unlocked{border-color:rgba(74,222,128,.45);box-shadow:0 0 0 1px rgba(74,222,128,.22),0 30px 80px -42px rgba(74,222,128,.5)}
.code-head{display:flex;align-items:center;gap:18px;margin-bottom:10px}
.code-lock{position:relative;width:56px;height:56px;flex:none;display:grid;place-items:center;border-radius:16px;background:linear-gradient(135deg,var(--violet),var(--violet-br));box-shadow:var(--shadow-glow)}
.lock-glyph{position:absolute;font-size:24px;transition:opacity .5s,transform .5s}
.lock-open{opacity:0;transform:scale(.4) rotate(-18deg)}
.code.is-unlocked .code-lock{background:rgba(74,222,128,.16);border:1px solid var(--green);box-shadow:0 0 24px -6px rgba(74,222,128,.6)}
.code.is-unlocked .lock-glyph:not(.lock-open){opacity:0;transform:scale(.4)}
.code.is-unlocked .lock-open{opacity:1;transform:scale(1) rotate(0)}
.code-label{font-size:.78rem;font-weight:800;letter-spacing:.16em;color:var(--lilac);margin:0;text-transform:uppercase}
.code-name{font-weight:800;font-size:clamp(20px,3.2vw,30px);margin:3px 0 0}
.code-status{
  margin-left:auto;font-size:.62rem;font-weight:800;letter-spacing:.14em;
  padding:6px 12px;border-radius:var(--r-chip);border:1px solid var(--line);color:var(--muted);white-space:nowrap;
}
.code.is-unlocked .code-status{color:var(--ink);background:var(--green);border-color:var(--green)}
.code-thesis{font-style:italic;font-weight:500;font-size:clamp(17px,2.4vw,22px);color:var(--cream);border-left:3px solid var(--violet);padding-left:16px;margin:18px 0 30px}

/* ---------- PANELES ---------- */
.panel{border-top:1px solid var(--line);padding:28px 0}
.panel-title{font-size:.86rem;font-weight:800;letter-spacing:.06em;display:flex;align-items:center;gap:10px;margin:0 0 18px;text-transform:uppercase;color:var(--cream)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--violet-br);box-shadow:0 0 10px var(--violet-br)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.card{background:var(--surface-2);border:1px solid var(--line);border-radius:16px;padding:18px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--violet);transform:translateY(-2px)}
.card h4{font-size:15px;font-weight:700;margin:0 0 8px;color:var(--violet-gl)}
.card p{margin:0;font-size:14px;color:var(--body)}
.card strong{color:var(--cream)}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:18px}
.stat{background:var(--surface-2);border:1px solid var(--line);border-radius:16px;padding:18px}
.stat b{font-weight:900;font-size:30px;display:block;line-height:1.1;background:linear-gradient(100deg,var(--violet-br),var(--violet-gl));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--muted)}

/* ---------- EJERCICIOS ---------- */
.ex{margin:22px 0}
.ex-q{display:block;font-weight:700;font-size:15px;margin-bottom:12px;color:var(--cream)}
textarea,input[type=text]{
  width:100%;background:var(--ink-2);border:1px solid var(--line);border-radius:14px;
  color:var(--cream);font-family:inherit;font-size:15px;font-weight:500;padding:13px 15px;resize:vertical;
  transition:border-color .2s,box-shadow .2s;
}
input[type=text]{margin-bottom:10px}
textarea:focus,input[type=text]:focus{outline:none;border-color:var(--violet-br);box-shadow:0 0 0 3px rgba(157,92,255,.2)}
textarea::placeholder,input::placeholder{color:#6E6493}

.choice{display:flex;flex-wrap:wrap;gap:10px}
.choice button{
  font-family:inherit;font-size:14px;font-weight:600;color:var(--body);
  background:var(--ink-2);border:1px solid var(--line);border-radius:var(--r-chip);padding:11px 18px;cursor:pointer;transition:.2s;
}
.choice button:hover{border-color:var(--violet-br);color:var(--cream)}
.choice button.is-active{background:linear-gradient(100deg,var(--violet),var(--violet-br));border-color:transparent;color:#fff;box-shadow:var(--shadow-glow)}

.sliders{display:grid;gap:14px}
.slider-row{display:grid;grid-template-columns:130px 1fr 32px;align-items:center;gap:14px}
.slider-row span{font-size:14px;color:var(--body)}
.slider-row b{font-weight:800;font-variant-numeric:tabular-nums;text-align:right;color:var(--violet-gl)}
input[type=range]{-webkit-appearance:none;appearance:none;height:6px;border-radius:99px;background:linear-gradient(90deg,var(--violet),var(--surface-2));outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--violet-gl);cursor:pointer;box-shadow:0 0 12px var(--violet-gl);border:2px solid var(--ink)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--violet-gl);cursor:pointer;border:2px solid var(--ink)}

/* puzzle (tri-estado) */
.puzzle{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.piece{display:flex;align-items:center;gap:10px;background:var(--ink-2);border:1px solid var(--line);border-radius:14px;padding:11px 13px}
.piece-n{font-weight:900;font-variant-numeric:tabular-nums;font-size:12px;color:var(--violet-gl)}
.piece-name{font-size:13.5px;flex:1}
.piece-state{display:flex;gap:5px}
.piece-state button{width:14px;height:14px;border-radius:50%;border:1px solid var(--line);background:transparent;cursor:pointer;padding:0;transition:.15s}
.piece-state button[data-s=have].on{background:var(--green);border-color:var(--green)}
.piece-state button[data-s=wip].on{background:var(--violet-gl);border-color:var(--violet-gl)}
.piece-state button[data-s=miss].on{background:var(--rose);border-color:var(--rose)}
.puzzle-key{font-size:11px;font-weight:600;color:var(--muted);margin-top:12px;display:flex;align-items:center}
.k{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:5px;vertical-align:-1px}
.k-have{background:var(--green)}.k-wip{background:var(--violet-gl)}.k-miss{background:var(--rose)}

.checks{display:grid;gap:8px}
.check{display:flex;align-items:flex-start;gap:11px;background:var(--ink-2);border:1px solid var(--line);border-radius:14px;padding:12px 14px;cursor:pointer;transition:.2s;font-size:14px}
.check:hover{border-color:var(--violet-br)}
.check.on{border-color:var(--violet);background:rgba(124,58,237,.14)}
.check-box{width:18px;height:18px;border-radius:6px;border:1.5px solid var(--line);flex:none;margin-top:1px;display:grid;place-items:center;font-size:12px;color:#fff}
.check.on .check-box{background:var(--violet);border-color:var(--violet)}
.check b{color:var(--violet-gl);font-weight:800;font-size:12px;margin-right:4px}

/* autoevaluación */
.panel--assess{border-top:1px dashed var(--line)}
.assess-q{font-weight:700;color:var(--cream);margin:0 0 14px}
.scale{display:flex;gap:10px}
.scale button{
  flex:1;max-width:64px;aspect-ratio:1;border-radius:14px;border:1px solid var(--line);
  background:var(--ink-2);color:var(--muted);font-family:inherit;font-weight:900;font-size:18px;cursor:pointer;transition:.2s;
}
.scale button:hover{border-color:var(--violet-br);color:var(--cream)}
.scale button.is-active{background:linear-gradient(135deg,var(--violet),var(--violet-br));color:#fff;border-color:transparent;box-shadow:var(--shadow-glow)}
.scale-legend{display:flex;justify-content:space-between;font-size:11px;font-weight:600;color:var(--muted);margin:8px 2px 0}
.unlock-hint{font-size:12px;font-weight:600;color:var(--muted);margin-top:18px;padding-left:14px;border-left:2px solid var(--line)}
.unlock-hint.done{color:var(--green);border-color:var(--green)}

/* ---------- SALTO CUÁNTICO ---------- */
.leap{position:relative;z-index:1;scroll-margin-top:80px;padding:90px clamp(16px,4vw,40px);max-width:var(--maxw);margin:0 auto;text-align:center}
.leap-title{font-weight:900;font-size:clamp(34px,7vw,72px);margin:16px 0 14px;background:linear-gradient(100deg,var(--violet-br),var(--violet-gl));-webkit-background-clip:text;background-clip:text;color:transparent}
.leap-sub{color:var(--body);font-style:italic;max-width:520px;margin:0 auto 36px;font-size:17px}
.leap-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:40px;text-align:left}
#leapLocked{text-align:center;color:var(--muted);font-weight:600;font-size:14px}
.leap-lock{display:block;font-size:42px;margin-bottom:14px;color:var(--violet-gl);opacity:.5}
.leap-card--open{border-color:var(--violet)}

.summary{margin-top:26px;background:var(--ink-2);border:1px solid var(--line);border-radius:16px;padding:24px;display:grid;gap:14px}
.summary h4{font-size:.72rem;font-weight:800;letter-spacing:.12em;color:var(--violet-gl);text-transform:uppercase;margin:0 0 4px}
.summary-row p{margin:0;font-size:14px;color:var(--body)}
.summary-row .val{color:var(--cream);font-size:15px}
.summary-row .val b{color:var(--violet-gl)}
.summary-scores{display:flex;gap:10px;flex-wrap:wrap}
.summary-score{font-size:12px;font-weight:600;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-chip);padding:6px 12px}
.summary-score b{color:var(--green);font-weight:800}
.leap-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}

/* ---------- CTA · AGENDA ---------- */
.cta{position:relative;z-index:1;scroll-margin-top:80px;overflow:hidden;max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,40px)}
.cta-glow{
  position:absolute;inset:0 clamp(16px,4vw,40px);border-radius:28px;pointer-events:none;
  background:radial-gradient(600px 300px at 50% 0%,rgba(124,58,237,.4),transparent 70%),
             radial-gradient(500px 300px at 80% 100%,rgba(74,222,128,.12),transparent 70%);
}
.cta-inner{
  position:relative;text-align:center;
  background:radial-gradient(ellipse at 50% 0%,rgba(124,58,237,.2),transparent 62%),linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--violet);border-radius:28px;
  padding:clamp(40px,7vw,72px) clamp(22px,5vw,60px);
  box-shadow:0 40px 100px -50px rgba(124,58,237,.75);
}
.cta-title{font-weight:900;font-size:clamp(28px,5.2vw,52px);margin:14px 0 16px}
.cta-sub{max-width:560px;margin:0 auto 28px;color:var(--body);font-size:clamp(15px,2vw,18px)}
.cta-points{list-style:none;padding:0;margin:0 auto 32px;display:grid;width:fit-content;gap:10px;text-align:left}
.cta-points li{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--cream)}
.cta-points li span{color:var(--violet-gl);font-size:13px}
.cta-btn{font-size:1.05rem;padding:18px 36px}
.cta-foot{font-size:11.5px;font-weight:600;color:var(--muted);margin:20px 0 0;letter-spacing:.03em}

/* ---------- FOOTER ---------- */
.foot{position:relative;z-index:1;text-align:center;padding:50px 20px;border-top:1px solid var(--line);color:var(--muted)}
.foot-mark{font-weight:900;letter-spacing:.3em;font-size:14px;color:var(--lilac);display:block;margin-bottom:10px}
.foot p{font-size:12.5px;font-weight:500;margin:0}

/* ---------- TOAST ---------- */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,40px);
  background:var(--green);color:var(--ink);font-weight:800;font-size:14px;
  padding:13px 22px;border-radius:var(--r-chip);box-shadow:0 12px 40px rgba(74,222,128,.5);
  opacity:0;pointer-events:none;transition:.4s cubic-bezier(.2,.8,.2,1);z-index:99;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- RESPONSIVE ---------- */
@media(max-width:680px){
  .problems{grid-template-columns:1fr}
  .slider-row{grid-template-columns:96px 1fr 28px}
  .rail-brand .rail-name{display:none}
  .rail{gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
  body::before,body::after,.eyebrow::before,.block-eyebrow::before,.leap-eyebrow::before,.cta-eyebrow::before{animation:none!important}
}

/* ---------- PRINT ---------- */
@media print{
  .rail,.hero-grid,.leap-actions,.rail-menu,.btn,#leapLocked,body::before,body::after{display:none!important}
  body{background:#fff;color:#111}
  .code,.panel,.takeaway,.summary,.leap-card,.cta-inner{background:#fff!important;border-color:#ccc!important;box-shadow:none!important}
  .card,.stat,.problem,textarea,input{background:#fafafa!important;color:#111!important;border-color:#ddd!important}
  .hero-title span,.leap-title,.stat b,.cta-title{-webkit-text-fill-color:#6b21a8;color:#6b21a8}
  a{color:#6b21a8}
  .cta-inner{background:#fff!important;border-color:#7C3AED!important}
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}