/* Nivela · hoja de estilos única.
   Paleta propia (teal + violeta para "subir de nivel" + ámbar para racha/XP),
   mobile-first, objetivos de toque >=44px, prefers-reduced-motion, dark mode. */

:root{
  --paper:#F2F5F7; --grid:#E3EAEF; --card:#FFFFFF; --ink:#12203A;
  --muted:#566478; --line:#D9E1E8;
  --primary:#0B7A78; --primary-d:#12203A; --primary-bg:#DDF1EF;
  /* Acción (botones, pestaña activa): azul de marca; el teal queda como acento de Números */
  --action:#12203A; --action-h:#1E3260; --action-sh:#0A1426; --action-t:#12203A; --logo-k:#E0A800;
  --accent:#7C3AED; --accent-bg:#EFE7FD;         /* subir de nivel */
  --streak:#C98A00; --streak-bg:#FFF3CC;         /* racha / XP */
  --ok:#15803D; --ok-bg:#E7F4EA;
  --bad:#BE123C; --bad-bg:#FCE7EC;
  --locked:#9CA3AF; --locked-bg:#F1F1EE;
  --paes:#4056D6; --paes-d:#2E3FA3; --paes-bg:#E7EAFB;
  --serif:ui-serif, Georgia, "Times New Roman", serif; /* solo notación matemática */
  --sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --disp:ui-rounded, "SF Pro Rounded", var(--sans); /* display: títulos, botones, marca */
  --radius:16px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark){
  :root{
    --paper:#0D1525; --grid:#14213A; --card:#15223A; --ink:#EAF0F7;
    --muted:#9EACC0; --line:#263551;
    --primary:#4FD1C5; --primary-d:#8BE3DA; --primary-bg:#12393B;
    --action:#3B5BDB; --action-h:#4C6BEA; --action-sh:#2A44A8; --action-t:#9DB2FF; --logo-k:#FFC93C;
    --accent:#A78BFA; --accent-bg:#241A3D;
    --streak:#FBBF24; --streak-bg:#3A2A0E;
    --ok:#4ADE80; --ok-bg:#123422;
    --bad:#FB7185; --bad-bg:#3A1420;
    --locked:#6B7280; --locked-bg:#20272A;
    --paes:#8B9BF4; --paes-d:#AAB6F7; --paes-bg:#1F2547;
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; color:var(--ink); font-family:var(--sans); font-size:17px; line-height:1.55;
  background-color:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(24px + var(--safe-bottom));
  min-height:100vh;
}
.wrap{max-width:600px; margin:0 auto; padding:0 16px}
.boot-msg{text-align:center; color:var(--muted); padding:40px 16px; font-family:var(--sans)}

button{font-family:var(--sans)}
a{color:var(--primary)}

/* ---------- Marca (wordmark simple: misma letra que usa el reporte de
   apoderados — la "N" en un verde, el resto en otro) ---------- */
.brandrow{max-width:600px; margin:0 auto; padding:10px 16px 2px; display:flex; align-items:center}
.logotipo{font-weight:800; font-size:25px; letter-spacing:-.02em; color:var(--primary-d);
  display:inline-flex; align-items:baseline; line-height:1; user-select:none}
.logotipo em{font-style:normal; color:var(--logo-k)}
.profile-link{margin-left:auto; padding:7px 14px; min-height:38px}

/* ---------- Nav ---------- */
.app-nav{position:sticky; top:0; z-index:20; background:color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter:saturate(140%) blur(6px); border-bottom:1px solid var(--line); padding:2px 0 8px; margin-bottom:16px}
.navrow{display:flex; gap:8px; overflow-x:auto; padding:0 16px; max-width:600px; margin:0 auto;
  -webkit-overflow-scrolling:touch; scrollbar-width:none}
.navrow::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto; border:1px solid var(--line); background:var(--card); color:var(--ink);
  font-family:var(--disp); font-weight:700; font-size:15px; padding:10px 16px; border-radius:999px; cursor:pointer;
  min-height:44px; white-space:nowrap; transition:all .15s}
.tab:hover{border-color:var(--primary)}
.tab.active{background:var(--action); color:#fff; border-color:var(--action)}

.panel{display:none; animation:fade .25s ease}
.panel.active{display:block}
@keyframes fade{from{opacity:0; transform:translateY(6px)}to{opacity:1; transform:none}}

.account-conflict{display:flex; align-items:center; gap:14px; margin:0 auto 12px}
.account-conflict>div{flex:1; background:var(--streak-bg); border:1px solid color-mix(in srgb,var(--streak) 40%,var(--line));
  border-radius:14px; padding:12px 14px}
.account-conflict strong,.account-conflict span{display:block}
.account-conflict span{color:var(--muted); font-size:14px; margin-top:2px}
.account-conflict .btn{flex:0 0 auto; padding:10px 14px; font-size:14px}
@media(max-width:560px){.account-conflict{display:block}.account-conflict .btn{width:100%; margin-top:8px}}

/* ---------- Cards ---------- */
.card{background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px 22px; margin:16px 0; box-shadow:0 1px 0 rgba(0,0,0,.03)}
.card h2{font-family:var(--disp); font-weight:800; font-size:22px; margin:2px 0 4px; letter-spacing:-.01em}
.card h3{font-family:var(--disp); font-weight:800; font-size:18px; margin:18px 0 8px}
.lead{color:var(--muted); margin:0 0 8px}
.divider{height:1px; background:var(--line); border:0; margin:16px 0}

/* ---------- Math typography (reutilizado tal cual del banco de origen) ---------- */
.m{font-family:var(--serif)}
.m i{font-style:italic}
.nowrap{white-space:nowrap}
sup{font-size:.72em}
.f{display:inline-flex; flex-direction:column; vertical-align:middle; text-align:center;
  margin:0 .14em; line-height:1.02; font-family:var(--serif)}
.f>span:first-child{border-bottom:1.5px solid currentColor; padding:0 .32em}
.f>span:last-child{padding:1px .32em 0}
.rb{border-top:1.6px solid currentColor; padding:1px .16em 0 .2em}
.ri{font-size:.62em; vertical-align:.55em; margin-right:-.26em}

/* ---------- Property/example/trap boxes (lecciones) ---------- */
.props{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin:12px 0}
.prop{background:var(--primary-bg); border:1px solid var(--line); border-radius:12px; padding:12px 14px}
.prop .name{font-size:13px; color:var(--primary-d); font-weight:700; margin-bottom:4px}
.prop .rule{font-family:var(--serif); font-size:20px}
@media(max-width:560px){.props{grid-template-columns:1fr}}

.example{background:var(--primary-bg); border-left:4px solid var(--primary); border-radius:0 12px 12px 0;
  padding:12px 16px; margin:12px 0}
.example .tag{font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:var(--primary-d);
  font-weight:700; margin-bottom:6px}
.step{font-family:var(--serif); font-size:18px; margin:5px 0}
.step .arrow{color:var(--muted); font-family:var(--sans); font-size:14px; margin:0 6px}

.trap{background:var(--streak-bg); border:1px solid color-mix(in srgb, var(--streak) 35%, var(--line)); border-radius:12px; padding:12px 16px; margin:12px 0}
.trap b{color:var(--streak)}

/* ---------- Botones ---------- */
.btn{background:var(--action); color:#fff; border:0; border-radius:14px; padding:14px 20px;
  font-family:var(--disp); font-weight:800; font-size:16px; cursor:pointer; min-height:48px}
.btn:hover{background:var(--action-h)}
.btn.ghost{background:transparent; color:var(--action-t); border:1.5px solid var(--action-t)}
.btn.accent{background:var(--accent)}
.btn:disabled{opacity:.45; cursor:default}
.btn.block{width:100%}

/* ---------- Quiz / opciones ---------- */
.qmeta{display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:4px 10px; color:var(--muted); font-size:14px; margin-bottom:6px}
/* Ejercicios en español e inglés (piloto 5° básico): selector compacto
   ES|EN, junto al header "Tema · Pregunta N de M" (pasa a su propia línea
   en pantallas angostas via flex-wrap de .qmeta). */
.lang-toggle{display:inline-flex; border:1.5px solid var(--line); border-radius:999px; overflow:hidden; flex-shrink:0}
.lang-opt{border:none; background:transparent; color:var(--muted); font-weight:700; font-size:13px; padding:7px 14px; min-height:36px; cursor:pointer; font-family:var(--sans)}
.lang-opt.active{background:var(--primary); color:#fff}
.lang-opt:not(.active):hover{background:var(--paper)}
.lang-fallback-note{color:var(--muted); font-size:13px; margin:0 0 10px; font-style:italic}
.sim-timer{font-family:var(--disp); font-weight:800; font-variant-numeric:tabular-nums}
.sim-timer.warn{color:var(--bad)}
.qtext{font-size:19px; margin:6px 0 14px; font-family:var(--serif); white-space:pre-wrap; line-height:1.45}
.table-scroll{max-width:100%; overflow-x:auto; margin:14px 0; -webkit-overflow-scrolling:touch}
.data-table{width:100%; min-width:320px; border-collapse:collapse; font-family:var(--sans); font-size:16px}
.data-table th,.data-table td{padding:10px 12px; border:1px solid var(--line); text-align:left; vertical-align:top}
.data-table th{background:var(--paper); font-weight:700}
.opt{display:block; width:100%; text-align:left; background:var(--card); border:1.5px solid var(--line);
  border-radius:12px; padding:14px 16px; margin:9px 0; font-size:17px; font-family:var(--serif);
  color:var(--ink); cursor:pointer; min-height:52px; transition:all .12s}
@media (hover:hover) and (pointer:fine){.opt:hover:not(:disabled){border-color:var(--primary)}}
.opt .lab{font-family:var(--sans); font-weight:700; color:var(--muted); margin-right:10px}
.opt.correct{background:var(--ok-bg); border-color:var(--ok)}
.opt.correct .lab{color:var(--ok)}
.opt.wrong{background:var(--bad-bg); border-color:var(--bad)}
.opt.wrong .lab{color:var(--bad)}
.opt:disabled{cursor:default}
.exp{background:var(--primary-bg); border-radius:12px; padding:12px 16px; margin-top:10px; font-size:16px;
  border:1px solid var(--line); white-space:pre-wrap; line-height:1.5}
/* "Dónde te equivocaste": mensaje propio de la alternativa marcada, arriba;
   la solución completa queda colapsada a un toque. */
.miss-box{background:var(--card); border:2px solid var(--bad); border-radius:12px; padding:12px 16px; margin-top:10px}
.miss-title{margin:0 0 4px; font-family:var(--disp); font-weight:800; font-size:14px; color:var(--bad)}
.miss-text{font-size:17px; line-height:1.5}
.exp-details{margin-top:10px; border-radius:12px; background:var(--primary-bg); border:1px solid var(--line)}
.exp-details>summary{cursor:pointer; min-height:44px; display:flex; align-items:center; padding:8px 16px;
  font-family:var(--disp); font-weight:700; font-size:15px; color:var(--primary-d)}
.exp-details>.exp{margin-top:0; border:0; padding-top:0}
.theory-toggle{display:flex; align-items:center; gap:7px; width:max-content; max-width:100%; min-height:44px;
  margin:-2px 0 12px; padding:8px 12px; border:1.5px solid var(--primary); border-radius:999px;
  background:transparent; color:var(--primary-d); font:inherit; font-size:14px; font-weight:800; cursor:pointer}
.theory-toggle:hover,.theory-toggle.open{background:var(--primary-bg)}
.practice-theory{padding:12px 14px 6px; margin:-3px 0 14px; border:1px solid var(--line);
  border-radius:14px; background:color-mix(in srgb,var(--primary-bg) 55%,var(--card))}
.practice-theory-head{display:flex; justify-content:space-between; gap:12px; align-items:baseline; margin-bottom:8px}
.practice-theory-head span{color:var(--muted); font-size:12px; white-space:nowrap}
.practice-theory .lesson{margin:8px 0}
.qfoot{display:flex; justify-content:space-between; align-items:center; margin-top:14px; gap:10px}
.result{text-align:center; padding:10px 0}
.result .big{font-family:var(--disp); font-weight:800; font-size:42px; color:var(--primary)}

/* ---------- Progreso / mastery ---------- */
.progress-bar{height:11px; background:var(--locked-bg); border-radius:999px; overflow:hidden}
.progress-bar>span{display:block; height:100%; width:0; background:var(--primary); border-radius:999px; transition:width .35s ease}
.progress-bar.dia>span{background:var(--streak)}
.meta-dia{display:flex; justify-content:space-between; align-items:baseline; font-size:14px; color:var(--muted); font-weight:600; margin-bottom:7px}
.progress-label{font-size:14px; color:var(--muted); margin-top:7px; font-weight:600}

/* ---------- Home v2: Continuar + mapa por ejes ---------- */
.continuar-card{border:2px solid var(--action); box-shadow:0 8px 22px rgba(18,32,58,.10)}
.btn.grande{font-size:17px; border-radius:14px; box-shadow:0 4px 0 var(--action-sh)}
.btn.grande:active{transform:translateY(2px); box-shadow:0 2px 0 var(--action-sh)}

/* ---------- Hoy: tarjeta de sesión (nivel 1, bloque de acción) ---------- */
.session-card{background:#12203A; color:#fff; border:0; position:relative; padding-top:20px}
.session-card h2{font-family:var(--disp); font-weight:800; font-size:24px; margin:6px 0 12px; letter-spacing:-.01em; color:#fff}
.session-done{font-family:var(--disp); font-weight:700; font-size:13px; color:#8FE3C2; margin:6px 0 2px}
.session-top{display:flex; align-items:baseline; justify-content:space-between; gap:10px}
.session-top .eyebrow{font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:#FFC93C; font-weight:700}
.session-time{font-size:13px; color:#FFC93C; font-weight:700}
.session-breakdown{display:flex; flex-direction:column; gap:8px; margin-bottom:16px}
.session-line{display:flex; align-items:center; gap:10px; font-size:15px}
.session-line .ico{width:26px; height:26px; border-radius:8px; background:rgba(255,255,255,.14); display:grid; place-items:center; font-size:13px; flex:0 0 auto}
.session-start{background:#FFC93C; color:#12203A}
.session-start:hover{background:#fff; opacity:.92}

/* ---------- Hoy: racha como semana visible ---------- */
.streak-head{display:flex; align-items:baseline; justify-content:space-between; margin-bottom:12px}
.streak-head>span:first-child{font-family:var(--disp); font-weight:800; font-size:15px}
.streak-today{font-size:13px; color:var(--muted); font-weight:600}
.streak-week{display:flex; gap:6px}
.streak-day{flex:1; display:flex; flex-direction:column; align-items:center; gap:5px}
.streak-day .dot{width:26px; height:26px; border-radius:50%; background:var(--locked-bg); display:grid; place-items:center;
  font-size:12px; font-weight:800; color:var(--muted)}
.streak-day .dot.done{background:var(--streak-bg); color:var(--streak)}
.streak-day .dot.today{background:#fff; border:2px dashed #D97706; color:#D97706; font-size:11px}
.streak-day .dot.future{opacity:.6}
.streak-day small{font-size:11px; color:var(--muted)}
.streak-day small.today{color:var(--streak); font-weight:700}

.eje-head{display:flex; align-items:center; gap:10px; padding:16px 2px 4px}
.eje-head .ico{font-size:18px}
.eje-head h3{font-family:var(--disp); font-weight:800; font-size:17px; margin:0}
.eje-head .avance{margin-left:auto; font-size:12.5px; color:var(--muted); font-weight:700}
.camino{display:flex; flex-direction:column; padding-left:6px}
.nodo{display:flex; align-items:center; gap:14px; background:none; border:0; text-align:left;
  padding:8px 4px; cursor:pointer; font:inherit; color:inherit; width:100%; border-radius:12px}
.nodo:hover:not(:disabled){background:var(--primary-bg)}
.nodo:disabled{cursor:default}
.nodo .aro{flex:0 0 auto; width:52px; height:52px; border-radius:50%; display:grid; place-items:center;
  font-size:20px; position:relative;
  background:conic-gradient(var(--primary) calc(var(--pct,0)*1%), var(--locked-bg) 0)}
.nodo .aro::after{content:""; position:absolute; inset:5px; border-radius:50%; background:var(--card); border:1px solid var(--line)}
.nodo .aro em{position:relative; z-index:1; font-style:normal}
.nodo.dominado .aro, .nodo.dominado .aro::after{background:var(--primary)}
.nodo.bloqueado{opacity:.55}
.nodo.bloqueado .aro{background:var(--locked-bg)}
.nodo.aqui{background:var(--primary-bg); border:1.5px solid var(--primary)}
.nodo .info b{display:block; font-size:15.5px}
.nodo .info span{font-size:12.5px; color:var(--muted); font-weight:600}
.nodo.aqui .info span{color:var(--primary-d); font-weight:700}
.conector{width:3px; height:12px; background:var(--line); border-radius:2px; margin-left:30px}

/* ---------- Temas: fila de 3 accesos compactos ---------- */
.quick-actions{display:grid; grid-template-columns:1fr 1fr 1fr; gap:8px; margin-bottom:14px}
.quick-actions[hidden]{display:none}
.quick-tile{background:var(--card); border:1px solid var(--line); border-radius:14px; padding:12px 10px;
  min-height:76px; display:flex; flex-direction:column; align-items:flex-start; gap:4px; cursor:pointer;
  font:inherit; color:var(--ink); position:relative; text-align:left}
.quick-tile .ico{font-size:17px}
.quick-tile b{font-family:var(--disp); font-weight:800; font-size:13.5px; line-height:1.2}
.quick-badge{position:absolute; top:9px; right:9px; background:var(--bad); color:#fff; font-size:11px; font-weight:800;
  border-radius:999px; min-width:19px; height:19px; display:grid; place-items:center; padding:0 5px}

/* ---------- Temas: grupos por eje, colapsables ---------- */
.eje-group{background:var(--card); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; margin-bottom:12px}
.eje-summary{display:flex; align-items:center; gap:10px; padding:14px 16px; cursor:pointer; list-style:none; font:inherit}
.eje-summary::-webkit-details-marker{display:none}
.eje-summary .ico{font-size:18px}
.eje-summary b{font-family:var(--disp); font-weight:800; font-size:16px}
.eje-summary .avance{margin-left:auto; font-size:12.5px; color:var(--muted); font-weight:700}
.eje-summary .chev{color:var(--primary); font-size:18px}
.eje-group[open] .eje-summary .chev{transform:rotate(180deg)}
.eje-body{padding:0 16px 8px}

.topic-row{display:flex; flex-wrap:wrap; align-items:center; gap:14px; padding:12px 0; border-top:1px solid var(--grid)}
.topic-row:first-child{border-top:0}
.topic-row .row-main{all:unset; display:flex; align-items:center; gap:14px; width:100%; cursor:pointer}
.topic-row .aro{flex:0 0 auto; width:44px; height:44px; border-radius:50%; display:grid; place-items:center; font-size:18px;
  background:conic-gradient(var(--primary) calc(var(--pct,0)*1%), var(--locked-bg) 0)}
.topic-row .aro em{width:36px; height:36px; border-radius:50%; background:var(--card); display:grid; place-items:center; font-style:normal}
.topic-row.dominado .aro{background:var(--primary); color:#fff}
.topic-row.dominado .aro em{background:transparent}
.topic-row.bloqueado .aro{background:var(--locked-bg); color:var(--locked)}
.topic-row.bloqueado .aro em{background:transparent}
.topic-row.bloqueado .body b{color:var(--muted)}
.topic-row .body{flex:1; min-width:0}
.topic-row .body b{display:block; font-size:15.5px}
.topic-row .body span{font-size:12.5px; color:var(--muted); font-weight:600}
.topic-row.aqui .body span{color:var(--primary-d); font-weight:700}
.pip-row{display:flex; align-items:center; gap:5px; margin:6px 0 4px}
.pip{width:12px; height:12px; padding:0; border-radius:50%; box-sizing:border-box; flex:0 0 auto; border:2px solid var(--primary); background:var(--card)}
.pip.progress{background:#8FE3C2; border-color:#8FE3C2}
.pip.done{background:var(--primary)}

.mini-actions{display:flex; gap:8px; width:100%; flex-basis:100%; padding:2px 0 12px 58px}
.mini-actions button{flex:1; background:transparent; border:1.5px solid var(--line); color:var(--muted); border-radius:999px;
  padding:8px 10px; font-family:var(--disp); font-weight:800; font-size:13.5px; min-height:40px; cursor:pointer; text-align:center}
.mini-actions button.primary{border-color:var(--primary); color:var(--primary)}
.topiccard-learn + .topiccard-test{margin-top:-6px}

/* ---------- Modo PAES (lente índigo sobre el mismo grafo) ---------- */
.tab.active[data-tab="paes"]{background:var(--paes); border-color:var(--paes)}
.card.paes-b{border:2px solid var(--paes)}
.eyebrow-paes{font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--paes); font-weight:700; margin-bottom:6px}
.btn.paes{background:var(--paes)}
.btn.paes:hover{background:var(--paes-d)}
.proye{display:flex; align-items:center; gap:14px}
.cob-num{font-family:var(--disp); font-weight:800; font-size:44px; color:var(--paes); line-height:1}
.cob-fila{display:flex; justify-content:space-between; align-items:center; font-size:14.5px; padding:8px 0; border-bottom:1px solid var(--line)}
.cob-fila:last-child{border-bottom:0}
.cob-der{display:flex; align-items:center; gap:8px}
.cob-mini{width:96px; height:7px; background:var(--locked-bg); border-radius:4px; overflow:hidden; display:inline-block}
.cob-mini i{display:block; height:100%; background:var(--paes)}
.cob-num-mini{font-size:12.5px; color:var(--muted); font-weight:700; min-width:34px; text-align:right; font-variant-numeric:tabular-nums}

/* ---------- Onboarding v2 (meta → curso → perfil → diagnóstico) ---------- */
.onb{max-width:480px; padding-top:28px}
.hero-onb{font-size:38px; margin:0 auto 14px; display:flex; justify-content:center}
.pasos{display:flex; gap:6px; margin-bottom:4px}
.pasos i{height:5px; flex:1; border-radius:3px; background:var(--line)}
.pasos i.on{background:var(--primary)}
.metacard{display:flex; gap:14px; align-items:center; text-align:left; width:100%;
  background:var(--card); border:2px solid var(--line); border-radius:16px; padding:14px 16px;
  cursor:pointer; font:inherit; color:inherit; margin-top:10px; min-height:52px}
.metacard .ico{font-size:24px; width:44px; height:44px; border-radius:12px; display:grid; place-items:center; background:var(--primary-bg); flex:0 0 auto}
.metacard b{display:block; font-size:15.5px}
.metacard span span{color:var(--muted); font-size:13px; line-height:1.35; display:block; margin-top:2px}
.metacard.sel{border-color:var(--primary); background:var(--primary-bg)}
.cursobtn:disabled{background:var(--locked-bg); border-color:var(--line); color:var(--muted); cursor:not-allowed; opacity:.68}
.cursobtn:disabled.sel{border-color:var(--line); background:var(--locked-bg)}
.course-status{font-size:12px; font-weight:600}
.cursogrid{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:4px}
.cursogrid .metacard{margin-top:0; justify-content:center; text-align:center}

/* ---------- Prueba de práctica (examen con nota) ---------- */
.nota-val{font-family:var(--disp); font-weight:800; font-size:58px; line-height:1.1}
.nota-val.aprobado{color:var(--ok)}
.nota-val.rojo{color:var(--bad)}
.exam-error{border:1.5px solid var(--line); border-radius:12px; padding:12px 14px; margin:10px 0}
.exam-error .tag{font-size:11.5px; font-weight:700; color:var(--bad); text-transform:uppercase; letter-spacing:.07em; margin-bottom:6px}
.sizechip{cursor:pointer; border:1.5px solid var(--line); background:var(--card); color:var(--ink); font-family:var(--disp)}
.sizechip.active{border-color:var(--primary); background:var(--primary-bg); color:var(--primary-d)}

/* ---------- Selección de temas (Prueba de práctica con temas elegidos) ---------- */
.topicchecklist{display:flex; flex-direction:column; gap:2px; margin:10px 0; max-height:260px; overflow-y:auto}
.topicchecklist[hidden]{display:none}
.topiccheck{display:flex; align-items:center; gap:10px; padding:9px 6px; border-radius:8px; cursor:pointer}
.topiccheck:hover{background:var(--primary-bg)}
.topiccheck input{width:18px; height:18px; accent-color:var(--primary)}

/* ---------- Chips: racha, XP, nivel ---------- */
.chiprow{display:flex; gap:8px; flex-wrap:wrap; margin:10px 0}
.chip{display:inline-flex; align-items:center; gap:6px; border-radius:999px; padding:7px 13px; font-weight:700; font-size:14px}
.chip.streak{background:var(--streak-bg); color:var(--streak)}
.chip.xp{background:var(--accent-bg); color:var(--accent)}
.chip.level{background:var(--primary-bg); color:var(--primary-d)}

/* ---------- Actividad diaria (barras) ---------- */
.dailychart{display:flex; align-items:flex-end; gap:6px; height:90px; margin:10px 0}
.dailychart .bar{flex:1; display:flex; flex-direction:column; align-items:center; gap:6px}
.dailychart .col{width:100%; max-width:22px; background:var(--locked-bg); border-radius:6px 6px 2px 2px; position:relative; height:64px; display:flex; align-items:flex-end}
.dailychart .col > span{display:block; width:100%; background:var(--primary); border-radius:6px 6px 2px 2px}
.dailychart .col.goal > span{background:var(--streak)}
.dailychart small{font-size:11px; color:var(--muted)}

/* ---------- Mi avance / Ajustes ---------- */
.mi-avance-head{display:flex; align-items:center; gap:12px; margin:2px 0 16px}
.mi-avance-head[hidden]{display:none}
.mi-avance-head h2{font-family:var(--disp); font-weight:800; font-size:19px; margin:0}
.mi-avance-head .pill-btn{margin-left:auto; padding:8px 14px; min-height:38px; width:auto; font-size:14px}
.round-btn{width:38px; height:38px; border-radius:999px; border:1px solid var(--line); background:var(--card);
  font-size:18px; cursor:pointer; line-height:1; color:var(--ink); flex:0 0 auto}

.eyebrow{font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--primary); font-weight:700}
.week-stats{display:flex; gap:22px; align-items:baseline; margin:10px 0 16px}
.week-stats b{display:block; font-family:var(--disp); font-weight:800; font-size:34px; line-height:1; color:var(--primary-d)}
.week-stats span{display:block; font-size:12.5px; color:var(--muted); font-weight:600; margin-top:4px}

.dominio-row{margin:14px 0}
.dominio-row:first-of-type{margin-top:0}
.dominio-label{display:flex; justify-content:space-between; font-size:14px; font-weight:600}
.dominio-label span:last-child{color:var(--muted)}
.mini-bar{display:flex; height:8px; border-radius:999px; overflow:hidden; background:var(--locked-bg); margin-top:6px}
.mini-bar>span{display:block; height:100%; background:var(--primary)}

.achv-row{display:flex; align-items:center; gap:12px; margin:0 0 12px}
.achv-row:last-child{margin-bottom:0}
.achv-row.locked{opacity:.55}
.achv-ico{width:36px; height:36px; border-radius:10px; background:var(--accent-bg); display:grid; place-items:center; font-size:17px; flex:0 0 auto}
.achv-row.locked .achv-ico{background:var(--locked-bg)}
.achv-status{font-size:12.5px; color:var(--muted)}

/* ---------- Flashcards (aprende) ---------- */
.deck{display:grid; grid-template-columns:1fr 1fr; gap:12px}
@media(max-width:560px){.deck{grid-template-columns:1fr}}
.flip{background:var(--card); border:1.5px solid var(--line); border-radius:14px; min-height:96px;
  padding:16px; cursor:pointer; display:flex; align-items:center; justify-content:center; text-align:center;
  font:inherit; color:inherit; width:100%}
.flip.solo{min-height:150px; font-size:19px; margin:8px 0}
.deck-head{display:flex; align-items:center; justify-content:space-between; gap:10px; margin:6px 0 10px}
.deck-head .btn{min-height:40px; padding:8px 14px; font-size:14px}
.flip .front{font-weight:600; color:var(--ink)}
.flip .back{display:none; font-family:var(--serif); font-size:20px; color:var(--primary-d)}
.flip.on .front{display:none}
.flip.on .back{display:block}
.flip.on{background:var(--primary-bg); border-color:var(--primary)}

/* ---------- Lecciones (Aprende) ---------- */
.lesson{border:1px solid var(--line); border-radius:12px; padding:4px 14px; margin:10px 0; background:var(--card)}
.lesson summary{cursor:pointer; padding:10px 0; font-weight:700; font-family:var(--disp); font-size:17px; min-height:44px; display:flex; align-items:center}
.lesson-body{padding:4px 0 14px}
.learn-search-label{display:block; margin:16px 0 6px; font-weight:700}
.learn-search{width:100%; min-height:48px; padding:10px 14px; border:1.5px solid var(--line); border-radius:12px; background:var(--card); color:var(--text); font:inherit}
.learn-search:focus{outline:3px solid color-mix(in srgb,var(--primary) 25%,transparent); border-color:var(--primary)}
.learn-expand-actions{display:flex; justify-content:flex-end; align-items:center; gap:8px; margin-top:10px; color:var(--muted); font-size:14px}
.learn-topic-head{display:flex; align-items:center; justify-content:space-between; gap:12px}
.learn-topic{padding:12px 14px}
.learn-topic-toggle{display:flex; align-items:center; justify-content:space-between; gap:12px; flex:1; min-width:0;
  min-height:52px; padding:7px 8px; border:0; border-radius:10px; background:transparent; color:var(--ink);
  text-align:left; font:inherit; cursor:pointer}
.learn-topic-toggle:hover{background:var(--primary-bg)}
.learn-topic-toggle > span:first-child{min-width:0}
.learn-topic-toggle strong{display:block; font-family:var(--disp); font-size:18px; line-height:1.25}
.learn-topic-toggle small{display:block; margin-top:3px; color:var(--muted); font-size:12.5px; font-weight:600}
.learn-chevron{flex:0 0 auto; color:var(--primary); font-size:22px; transition:transform .15s}
.learn-topic.open .learn-chevron{transform:rotate(180deg)}
.learn-topic-content{padding:4px 8px 8px}
.pin-btn{flex:0 0 auto; min-height:40px; padding:8px 12px; font-size:14px}
.pin-btn.active{border-color:var(--primary); color:var(--primary-d)}
.learn-topic.pinned{border-color:var(--primary)}
.learn-topic.focused{box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 22%,transparent)}
@media(max-width:420px){
  .learn-topic-head{align-items:flex-start}
  .pin-btn{padding:7px 9px}
  .practice-theory-head{align-items:flex-start; flex-direction:column; gap:2px}
}
.answer-xp{margin-top:8px; color:var(--primary); font-weight:800; font-size:14px}
.practice-nudge{margin-top:12px; padding:14px; border:1px solid #F2C46D; border-radius:12px; background:#FFF9E8; text-align:left}
.practice-nudge p{margin:0 0 10px; line-height:1.45}
.nudge-actions{display:flex; flex-wrap:wrap; gap:8px}
.review-mission{margin:18px 0 10px; padding:14px; border-radius:14px; background:var(--primary-bg); text-align:left}
.review-mission h3{margin-top:0}

/* Modo Rescate — "Ayuda breve" (ver requerimiento-modo-rescate/). Reusa
   .card/.btn*/.progress-bar/.tag en vez de un sistema visual paralelo. */
.rescue-card{max-width:560px; margin:0 auto}
.rescue-eyebrow{display:flex; justify-content:space-between; color:var(--muted); font-size:13px; margin-bottom:8px}
.rescue-progress{display:grid; grid-template-columns:repeat(4,1fr); gap:6px; margin-bottom:18px}
.rescue-progress span{height:5px; border-radius:999px; background:var(--locked-bg)}
.rescue-progress span.is-done{background:var(--primary)}
.rescue-lead{color:var(--muted); margin:0 0 16px; line-height:1.5}
.rescue-panel{background:var(--paper); border:1px solid var(--line); border-radius:14px; padding:16px; margin:14px 0}
.rescue-wrong{background:var(--bad-bg); color:var(--bad); border-radius:10px; padding:12px 14px; margin:10px 0 14px; text-decoration:line-through}
.rescue-diagnosis{display:grid; grid-template-columns:32px 1fr; gap:10px; align-items:start; background:var(--streak-bg); color:var(--streak); border-radius:12px; padding:12px}
.rescue-diagnosis-icon{display:grid; place-items:center; width:28px; height:28px; border-radius:50%; background:color-mix(in srgb, var(--streak) 16%, transparent); font-size:16px}
.rescue-cost-grid{display:grid; grid-template-columns:1fr 1.25fr; gap:12px; margin:6px 0 16px}
@media(max-width:480px){.rescue-cost-grid{grid-template-columns:1fr}}
.rescue-cost-box{min-height:120px; padding:14px; border-radius:14px; background:var(--streak-bg); color:var(--streak)}
.rescue-cost-box.variable{background:var(--paes-bg); color:var(--paes-d)}
.rescue-cost-label{margin-bottom:8px; font-size:14px}
.rescue-price{font-size:26px; font-weight:800}
.rescue-once{margin-top:6px; opacity:.8; font-size:13px}
.rescue-tokens{display:flex; flex-wrap:wrap; gap:6px; min-height:52px; margin-top:8px}
.rescue-token{display:grid; place-items:center; padding:6px 8px; border:2px solid currentColor; border-radius:8px; background:color-mix(in srgb, currentColor 8%, transparent); font-weight:700; font-size:13px}
.rescue-range-wrap{margin:14px 0}
.rescue-range-head{display:flex; justify-content:space-between; margin-bottom:6px; font-size:14px}
.rescue-total{display:flex; justify-content:space-between; gap:12px; padding:12px 14px; border-radius:12px; background:var(--primary-bg); margin-top:10px; font-size:14px}
.rescue-total strong{font-size:18px}
.rescue-equation{font-size:clamp(19px,5vw,26px); text-align:center; margin:10px 0; font-family:var(--serif)}
.rescue-slot{display:inline-grid; place-items:center; min-width:56px; border-bottom:3px solid var(--primary); color:var(--primary); font-weight:800}
.rescue-balance{display:flex; align-items:center; justify-content:center; gap:14px; font-size:clamp(19px,5vw,24px); font-family:var(--serif); margin:8px 0 14px; flex-wrap:wrap}
.rescue-balance-side{padding:10px 14px; border-radius:12px; background:var(--card); border:1px solid var(--line)}
.rescue-actions-inline{display:flex; justify-content:center}
.rescue-order-hint{text-align:center; color:var(--muted); font-size:14px; margin:-4px 0 12px}
.rescue-plot{margin:8px 0}
.rescue-plot svg{display:block; width:100%; height:auto; max-width:320px; margin:0 auto}
.rescue-step-chain{display:flex; flex-direction:column; gap:8px; margin:10px 0}
.rescue-step{display:flex; align-items:center; justify-content:space-between; gap:10px; padding:10px 12px; border-radius:10px; background:var(--card); border:1px solid var(--line); font-size:14px}
.rescue-step.is-flagged{background:var(--bad-bg); border-color:var(--bad); color:var(--bad)}
.rescue-step.is-done{background:var(--primary-bg); border-color:var(--primary); color:var(--primary)}
.rescue-step-label{font-weight:700; min-width:56px; flex-shrink:0}
.rescue-step-text{flex:1; text-align:left; font-family:var(--serif)}
.rescue-step-value{font-weight:700; flex-shrink:0}
.rescue-numberline{margin:8px 0}
.rescue-numberline svg{display:block; width:100%; height:auto; max-width:340px; margin:0 auto}
.rescue-distribute-grid{display:grid; grid-template-columns:1fr 1fr; gap:8px; margin:10px 0}
@media(max-width:480px){.rescue-distribute-grid{grid-template-columns:1fr}}
.rescue-distribute-cell{padding:10px 12px; border-radius:10px; background:var(--card); border:1px solid var(--line); font-family:var(--serif); font-size:15px; text-align:center}
.rescue-distribute-cell.is-done{background:var(--primary-bg); border-color:var(--primary); color:var(--primary)}
.rescue-digit-tiles{display:flex; align-items:center; justify-content:center; gap:4px; margin:16px 0; flex-wrap:wrap}
.rescue-digit-tile{display:grid; place-items:center; min-width:30px; height:38px; border-radius:8px; background:var(--card); border:1px solid var(--line); font-family:var(--serif); font-size:20px; font-weight:700}
.rescue-digit-comma{display:grid; place-items:end center; min-width:10px; height:38px; font-size:26px; font-weight:800; color:var(--primary)}
.rescue-choice-grid{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin:14px 0}
@media(max-width:480px){.rescue-choice-grid{grid-template-columns:1fr}}
.rescue-choice{display:block; width:100%; text-align:left; background:var(--card); border:1.5px solid var(--line); border-radius:12px; padding:12px 14px; font:inherit; color:var(--ink); cursor:pointer; min-height:44px}
.rescue-choice:hover:not(:disabled){border-color:var(--primary)}
.rescue-choice.is-correct{background:var(--ok-bg); border-color:var(--ok); color:var(--ok)}
.rescue-choice.is-wrong{background:var(--bad-bg); border-color:var(--bad); color:var(--bad)}
.rescue-feedback{display:block; min-height:20px; margin-top:6px; font-size:14px; color:var(--muted)}
.rescue-feedback.good{color:var(--ok)}
.rescue-feedback.bad{color:var(--bad)}
.rescue-actions{display:flex; justify-content:space-between; align-items:center; gap:10px; margin-top:18px}
/* Salto del diagnóstico (paso 1/4): a propósito un link de texto, no un
   botón — no debe competir visualmente con "Verlo paso a paso". Arranca
   deshabilitado con cuenta regresiva (ver startSkipCountdown en rescue.js). */
.rescue-skip-link{background:none; border:0; padding:10px 4px; font:inherit; font-size:14px; color:var(--muted); text-decoration:underline; cursor:pointer; min-height:36px}
.rescue-skip-link:hover:not(:disabled){color:var(--ink)}
.rescue-skip-link:disabled{cursor:default; text-decoration:none; opacity:.65}
input[type="range"]{width:100%; accent-color:var(--primary); min-height:28px}
@media(pointer:coarse){input[type="range"]{min-height:44px}}
.account-entry{margin-top:22px; padding-top:16px; border-top:1px solid var(--line)}
.account-entry .btn + .btn{margin-top:8px}
.google-signin{width:100%; min-height:48px; display:flex; align-items:center; justify-content:center; gap:10px;
  padding:12px; border:1px solid #747775; border-radius:999px; background:#fff; color:#1f1f1f;
  font-family:"Google Sans",Roboto,Arial,sans-serif; font-size:15px; font-weight:600; cursor:pointer}
.google-signin:hover{background:#f8faff; border-color:#5f6368}
.google-signin:disabled{cursor:default; opacity:1; background:#f2f2f2}
.google-signin img{flex:0 0 20px}
.account-alternative{display:block; width:100%; margin:12px 0; border:0; background:none; color:var(--primary-d);
  font:inherit; font-weight:700; text-decoration:underline; cursor:pointer; padding:6px}
.account-offer{border-color:#9bcfc0; background:linear-gradient(135deg,var(--card),var(--primary-bg))}
.account-offer .btn{margin-top:8px}
/* Oferta de instalación: banner fijo al pie de la pantalla (igual en
   cualquier punto del scroll), inspirado en el prompt "Instalar app" de
   otras PWA de referencia que al usuario le gustó. Encima del contenido
   normal (z-index 20 es .app-nav, que es sticky pero no fixed) pero sin
   taparlo por completo: queda angosto y con sombra, no a pantalla completa. */
.sticky-offer{
  position:fixed; left:16px; right:16px; bottom:calc(16px + var(--safe-bottom));
  max-width:568px; margin:0 auto; z-index:30;
  padding:14px 16px; box-shadow:0 10px 30px rgba(0,0,0,.2);
  animation:sticky-offer-in .22s ease-out;
}
@media (prefers-reduced-motion: reduce){ .sticky-offer{animation:none} }
@keyframes sticky-offer-in{ from{ transform:translateY(14px); opacity:0 } to{ transform:translateY(0); opacity:1 } }
.sticky-offer h3{font-size:16px; margin:0 0 6px}
.sticky-offer .lead{font-size:14px; line-height:1.4; margin:0 0 6px}
.sticky-offer .offer-row{display:flex; align-items:center; gap:10px; margin-top:10px}
.sticky-offer .offer-row .btn{flex:1; margin:0; padding:11px 16px; min-height:40px; font-size:15px}
.sticky-offer .offer-row .round-btn{flex:0 0 auto; width:40px; height:40px}
.recovery-result{margin-top:14px; padding:14px; border-radius:12px; background:var(--paper)}
.recovery-result code{display:block; font-size:18px; font-weight:700; letter-spacing:.06em; overflow-wrap:anywhere}
.qr-box{margin-top:12px; display:flex; justify-content:center}
.qr-box svg{width:160px; height:160px; background:#fff; border-radius:8px; padding:8px; border:1px solid var(--line)}
.admin-filters{display:flex; gap:12px; align-items:end; flex-wrap:wrap}
.admin-filters label{display:grid; gap:5px; font-weight:700}
.admin-filters input{min-height:42px; padding:8px; border:1px solid var(--line); border-radius:9px}
.admin-filters select{min-height:42px; padding:8px; border:1px solid var(--line); border-radius:9px; background:var(--card)}
.admin-kpis{display:grid; grid-template-columns:repeat(auto-fit,minmax(130px,1fr)); gap:10px}
.admin-kpi{display:grid; gap:6px}
.admin-kpi span{color:var(--muted)}
.admin-kpi b{font-size:26px}
.admin-table-card .data-table{font-size:14px}
.link-btn{border:0;background:none;color:var(--primary-d);font:inherit;font-weight:700;text-decoration:underline;cursor:pointer;padding:0}

/* ---------- Onboarding ---------- */
.avatarrow{display:flex; gap:10px; flex-wrap:wrap; margin:12px 0}
.avatarbtn{font-size:28px; width:56px; height:56px; border-radius:50%; border:2px solid var(--line);
  background:var(--card); cursor:pointer}
.avatarbtn.active{border-color:var(--primary); background:var(--primary-bg)}
input[type="text"]{width:100%; font-size:17px; padding:14px 16px; border:1.5px solid var(--line);
  border-radius:12px; background:var(--card); color:var(--ink); min-height:48px}
input[type="text"]:focus{outline:2px solid var(--primary); border-color:var(--primary)}

/* ---------- Figuras SVG en ejercicios ---------- */
/* Los SVG llegan inline en stem/options/explanation (validados por
   check-content). Se dibujan con currentColor para heredar el tema. */
.qtext svg, .opt svg, .exp svg, .lesson-body svg{
  max-width:100%; height:auto; display:block; margin:10px auto}
.opt svg{margin:4px 0 4px 8px; max-height:90px}

.footnote{text-align:center; color:var(--muted); font-size:13px; margin:26px 0 8px}
.empty{text-align:center; color:var(--muted); padding:20px}

/* ---------- Amigos (grupos privados) ---------- */
.amigos-actions{display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-bottom:14px}
.group-card{display:flex; align-items:center; gap:14px; width:100%; text-align:left;
  font:inherit; color:inherit; cursor:pointer}
.group-card-emoji{font-size:30px; flex:0 0 auto}
.group-card-body{flex:1 1 auto; display:flex; flex-direction:column; gap:2px; min-width:0}
.group-card-body b{font-family:var(--disp); font-size:16px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.group-card-body .lead{margin:0}
.group-card-arrow{font-size:22px; color:var(--muted); flex:0 0 auto}
.member-row{display:flex; align-items:center; gap:10px; padding:8px 0; border-bottom:1px solid var(--line)}
.member-row:last-child{border-bottom:0}
.member-avatar{font-size:22px; flex:0 0 auto}
.member-name{flex:1 1 auto; font-size:14.5px}
.member-actions{display:flex; gap:6px; flex-wrap:wrap}
.member-actions .btn{padding:6px 10px; min-height:32px; font-size:12.5px}
.rank-row{display:flex; align-items:center; gap:10px; padding:10px 8px; border-radius:12px}
.rank-row.me{background:var(--primary-bg)}
.rank-row.top1{background:linear-gradient(90deg, color-mix(in srgb, gold 25%, transparent), transparent)}
.rank-row.top2{background:linear-gradient(90deg, color-mix(in srgb, silver 25%, transparent), transparent)}
.rank-row.top3{background:linear-gradient(90deg, color-mix(in srgb, #cd7f32 22%, transparent), transparent)}
.rank-position{font-family:var(--disp); font-weight:800; width:22px; text-align:center; color:var(--muted); flex:0 0 auto}
.rank-row.top1 .rank-position, .rank-row.top2 .rank-position, .rank-row.top3 .rank-position{color:var(--ink)}
.rank-avatar{font-size:22px; flex:0 0 auto}
.rank-name{flex:1 1 auto; font-size:14.5px; font-weight:600; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.rank-row.me .rank-name{color:var(--primary-d)}
.rank-value{font-family:var(--disp); font-weight:800; font-size:15px; flex:0 0 auto}
.rank-streak-chip{font-size:12.5px; color:var(--streak); flex:0 0 auto}
.challenge-bar{height:14px; border-radius:999px; background:var(--paper); overflow:hidden}
.challenge-bar-fill{height:100%; background:var(--primary); border-radius:999px; transition:width .3s}

@media(prefers-reduced-motion:reduce){*{animation:none!important; transition:none!important}}