/* Tema claro y legible, a juego con la landing */
:root,:root[data-theme="dark"]{
  --paper:#F6F8FB; --card:#FFFFFF; --ink:#1B2A3A; --muted:#5B6B7C; --line:#DCE3EB;
  --accent:#1F5FA8; --accent-soft:#E3EDF9; --signal:#E8643C; --signal-soft:#FCE6DE;
  --port:#C8402F; --port-soft:#FBE3DB; --stbd:#2F7D56; --stbd-soft:#DDF1E6;
  --f-display:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-body:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em}
.exam .t,.bar-title,.brand-name{font-weight:700;letter-spacing:-.01em}
.qtext{font-weight:600}
.eyebrow,.qunit,.chip,.badge{letter-spacing:.08em}
.hero::after{display:none}

.btn,.fcard,.exam,.opt,.unit{border-radius:12px}

/* ===== Rediseño de la app: misma línea que la landing ===== */
:root{--blue:#1F5FA8;--sky:#DCEBFA;--sand:#FFF1DE;--sh:0 8px 30px rgba(22,40,59,.07)}
body{background:var(--paper)}
.wrap{max-width:980px}
.brand{border:0;padding:6px 0 4px}
.brand-name{font-size:21px;font-weight:800;letter-spacing:-.02em;gap:10px}
.user .mail{max-width:18ch}
.btn{border-radius:999px;border:2px solid var(--line);background:#fff;padding:11px 20px;font-weight:700;transition:transform .12s,box-shadow .12s}
.btn:hover{transform:translateY(-1px);border-color:var(--blue)}
.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.primary:hover{box-shadow:0 8px 20px rgba(31,95,168,.28);filter:none}
.btn.ghost{background:transparent}
.btn.sm{padding:7px 14px}
.badge{border-radius:999px}

/* portada con escena */
.hero{margin-top:14px;padding:38px 34px 200px;border-radius:26px;background:linear-gradient(180deg,var(--sky) 0%,#EAF3FB 50%,var(--sand) 100%);overflow:hidden}
.hero h1{font-size:clamp(34px,6vw,56px);max-width:15ch;color:var(--ink);line-height:1.05}
.hero p{color:#31465C;font-size:18px;max-width:34em}
.hero .eyebrow{display:inline-block;background:#fff;color:var(--ink);padding:6px 12px;border-radius:999px;font-family:var(--f-body);font-size:12px;letter-spacing:.04em;text-transform:none;font-weight:700;box-shadow:0 2px 10px rgba(22,40,59,.08);margin-bottom:6px;position:relative;z-index:1}
.hero .stats{gap:12px}
.hero .stat{background:#fff;border-radius:16px;padding:12px 18px;box-shadow:0 4px 16px rgba(22,40,59,.08)}
.hero .stat b{font-family:var(--f-body);font-weight:800;font-size:26px;letter-spacing:-.02em;color:var(--blue)}
.hero-scene{position:absolute;left:0;right:0;bottom:0;width:100%;height:190px;z-index:0;pointer-events:none}

/* tarjetas */
section.block{margin-top:44px}
.block-head h2,.review-cta h2{font-size:30px}
.fcard,.exam,.unit,.review-cta,.pricing,.ritem,.conds{background:#fff;border:0;border-radius:20px;box-shadow:var(--sh)}
.fcard{padding:24px}
.fcard.main,.pricing{background:var(--blue);color:#fff;box-shadow:0 14px 36px rgba(31,95,168,.3)}
.fcard.main p,.pricing .note,.pricing .price span{color:#D3E3F7}
.fcard.main .eyebrow,.pricing .eyebrow{color:#BBD6F3}
.fcard.main .btn,.pricing .btn.primary{background:#fff;color:var(--blue);border-color:#fff}
.fcard.main .btn.ghost{background:transparent;color:#fff;border-color:#ffffff88}
.fcard.main .btn.primary{background:#fff;color:var(--blue)}
.pricing{padding:28px;border:0}
.pricing li{margin-bottom:2px}
.price b{font-weight:800;letter-spacing:-.03em;font-size:46px}
.exam{padding:16px 20px}
.exam .t{font-size:18px}
.exam .s{font-size:13.5px}
.year h3{font-family:var(--f-mono);font-weight:600;color:var(--blue);font-size:15px;letter-spacing:.06em}
.unit{padding:16px 18px;transition:transform .12s,box-shadow .12s}
.unit:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(22,40,59,.1)}
.unit .num{color:var(--blue);font-weight:600}
.unit.key{box-shadow:inset 4px 0 0 var(--signal),var(--sh)}
.review-cta{border:2px dashed #BBCBDA;box-shadow:none;background:transparent;padding:20px 24px}
.eyebrow{font-family:var(--f-mono);font-weight:600;letter-spacing:.1em}
.lock svg{color:var(--blue)}
footer{border:0;margin-top:56px;padding-top:0}
.seg{border-radius:999px;border-color:var(--line)}

/* examen */
.bar{background:rgba(246,249,252,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.progress{height:6px;border-radius:3px}
.progress i{background:linear-gradient(90deg,var(--blue),#4A8BCB)}
.timer{border-radius:999px;padding:5px 14px}
.qcard{background:#fff;border-radius:22px;padding:26px;box-shadow:var(--sh)}
.opt{border:2px solid var(--line);border-radius:14px;padding:13px 16px;background:#fff}
.opt .k{border-radius:50%}
.expl{background:var(--accent-soft);border:0;border-radius:14px}
.cell{border-radius:10px}
.stamp{border-radius:14px}
.dialog{border-radius:22px;background:#fff}
.dialog input{border-radius:12px;border:2px solid var(--line)}
.modal{backdrop-filter:blur(3px)}
@media (max-width:640px){
  .hero{padding:26px 20px 150px;border-radius:20px}
  .hero-scene{height:140px}
  .qcard{padding:18px}
}
.price b{font-family:var(--f-body)}
/* móvil: píldora de cuenta, tarjetas de cifras */
.badge{white-space:nowrap;flex:none;line-height:1.5;padding:4px 11px}
.hero .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;max-width:560px}
.hero .stat{min-width:0}
.hero .stat span{display:block;line-height:1.3}
@media (max-width:640px){
  .hero .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero .stat{padding:12px 14px}
  .hero h1{max-width:none}
}
/* menú de usuario */
.brand{flex-wrap:nowrap}
.user{position:relative}
.avatar{display:flex;align-items:center;gap:6px;height:44px;padding:0 12px 0 5px;border:2px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);cursor:pointer;font:inherit}
.avatar:hover,.avatar[aria-expanded="true"]{border-color:var(--blue)}
.avatar b{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;font-size:15px;font-weight:800}
.umenu{position:absolute;right:0;top:calc(100% + 8px);z-index:50;width:min(300px,calc(100vw - 32px));background:#fff;border-radius:18px;padding:8px;box-shadow:0 18px 50px rgba(22,40,59,.22);border:1px solid var(--line)}
.umenu[hidden]{display:none}
.um-head{display:grid;gap:6px;justify-items:start;padding:12px 12px 14px;border-bottom:1px solid var(--line);margin-bottom:6px}
.um-head .mail{max-width:100%;color:var(--ink);font-weight:700;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.um-head small{color:var(--muted);font-size:13px}
.umenu button[role=menuitem]{display:flex;justify-content:space-between;align-items:center;width:100%;min-height:44px;padding:0 12px;border:0;border-radius:10px;background:none;color:var(--ink);font:600 15px var(--f-body);text-align:left;cursor:pointer}
.umenu button[role=menuitem]:hover{background:var(--accent-soft)}
.umenu button i{font-style:normal;font-family:var(--f-mono);font-size:13px;background:var(--signal-soft);border-radius:999px;padding:1px 9px}
.umenu .out{color:#B8431F;border-top:1px solid var(--line);border-radius:0 0 10px 10px;margin-top:6px}
/* texto secundario legible sobre fondo azul */
.pricing .muted,.pricing p,.fcard.main .muted,.fcard.main p{color:#D3E3F7}
/* una sola tipografia */
body,button,input,select,textarea{font-family:var(--f-body);font-variant-numeric:tabular-nums}
.eyebrow,.year h3,.qunit,.chip,.badge{font-family:var(--f-body);font-weight:700}
.eyebrow{text-transform:uppercase;font-size:12px;letter-spacing:.08em}
/* portada compacta: los examenes quedan a la vista */
.hero{padding:26px 28px 118px}
.hero h1{font-size:clamp(28px,4.4vw,40px);max-width:none;line-height:1.1}
.hero p{font-size:16px;margin:10px 0 14px;max-width:44em}
.hero .stats{max-width:none;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.hero .stat{padding:10px 14px;border-radius:14px}
.hero .stat b{font-size:22px}
.hero .stat span{font-size:12.5px}
.hero-scene{height:120px}
section.block{margin-top:32px}
@media (max-width:640px){
  .hero{padding:20px 18px 100px}
  .hero .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-scene{height:96px}
}
/* orden: primero lo que se practica, despues el precio */
#app{display:flex;flex-direction:column}
#app>*{order:0}
#app>section.block{order:3}
#app>section.block:has(.feature){order:1}
#app>section.block:has(.pricing){order:2}
#app>footer{order:9}
.pricing{padding:22px 26px}
.pricing h3{font-size:24px}
@media (max-width:640px){
  .brand-name{font-size:17px;white-space:nowrap;gap:8px}
  .brand-name svg{width:30px;height:30px}
  .brand .btn.sm{padding:7px 12px;font-size:13.5px;white-space:nowrap}
  .pricing{padding:20px}
  .pricing ul{display:none}
}
#app>section.block:has(>.fcard.main){order:0}
@media (max-width:640px){
  .brand-name{font-size:16px;gap:6px}
  .brand-name svg{width:28px;height:28px}
  .brand .btn.sm{padding:6px 10px;font-size:13px}
  .brand{gap:8px}
}
@media (max-width:640px){
  .hero .stats{grid-template-columns:repeat(auto-fit,minmax(104px,1fr))}
  .hero .stat{padding:9px 12px}
}

/* selector de comunidad */
.sedesel{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 12px}
.sedesel button{font:inherit;font-weight:600;font-size:14px;padding:7px 16px;border-radius:999px;border:1.5px solid rgba(255,255,255,.55);background:transparent;color:#fff;cursor:pointer}
.sedesel button:hover{background:rgba(255,255,255,.14)}
.sedesel button[aria-pressed="true"]{background:#fff;color:#0B2545;border-color:#fff}
.sedesel button:focus-visible{outline:3px solid #9CC4FF;outline-offset:2px}