/* Aprobia · estilos
   Motivo visual: la hoja de respuestas de examen (burbujas A·B·C·D rellenadas a lápiz)
   y el subrayador amarillo del opositor. Una sola familia: Public Sans. */

@font-face { font-family: "Public Sans"; src: url("lib/fonts/public-sans-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Public Sans"; src: url("lib/fonts/public-sans-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Public Sans"; src: url("lib/fonts/public-sans-latin-800-normal.woff2") format("woff2"); font-weight: 800; font-display: swap; }

:root {
  --tinta: #1b2a4a;
  --tinta-2: #33415f;
  --gris: #5c6679;
  --linea: #d9dee7;
  --fondo: #f3f5f8;
  --papel: #ffffff;
  --boli: #2b50c8;
  --boli-osc: #1f3c9e;
  --boli-claro: #e8edfb;
  --acierto: #17804f;
  --acierto-claro: #e3f3ea;
  --fallo: #b93a32;
  --fallo-claro: #f8e6e4;
  --subrayado: #ffe45e;
  --aviso: #8a5a00;
  --aviso-claro: #fff4d6;
  --radio: 10px;
  --sombra: 0 1px 2px rgba(27, 42, 74, .06), 0 8px 24px -12px rgba(27, 42, 74, .18);
  --ancho: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px; line-height: 1.6; color: var(--tinta); background: var(--papel);
}
img, svg { max-width: 100%; }
a { color: var(--boli); text-underline-offset: 3px; }
a:hover { color: var(--boli-osc); }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.015em; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); font-weight: 800; letter-spacing: -.03em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 800; letter-spacing: -.025em; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--boli); outline-offset: 2px; border-radius: 4px; }
.envoltorio { max-width: var(--ancho); margin: 0 auto; padding: 0 22px; }
.oculto { display: none !important; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
mark, .subrayado { background: linear-gradient(transparent 55%, var(--subrayado) 55%); color: inherit; padding: 0 .1em; }
.tenue { color: var(--gris); }
.num { font-variant-numeric: tabular-nums; }

/* ---------- botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font: inherit; font-weight: 600; font-size: .98rem; line-height: 1;
  padding: .85em 1.25em; border-radius: 8px; border: 1.5px solid transparent;
  cursor: pointer; text-decoration: none; transition: background .15s, border-color .15s, color .15s;
  background: var(--boli); color: #fff;
}
.btn:hover { background: var(--boli-osc); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sec { background: var(--papel); color: var(--tinta); border-color: var(--linea); }
.btn-sec:hover { background: var(--fondo); color: var(--tinta); border-color: #c3cad7; }
.btn-peligro { background: var(--papel); color: var(--fallo); border-color: #e9c4c0; }
.btn-peligro:hover { background: var(--fallo-claro); color: var(--fallo); }
.btn-grande { font-size: 1.05rem; padding: 1em 1.5em; }
.btn-peq { font-size: .88rem; padding: .6em .9em; }
.btn-texto { background: none; border: 0; color: var(--boli); padding: .3em 0; font-weight: 600; }
.btn-texto:hover { background: none; color: var(--boli-osc); text-decoration: underline; }

/* ---------- aviso MODO DEMO ---------- */
.demo {
  display: inline-flex; align-items: center; gap: .45em; font-size: .8rem; font-weight: 600;
  background: var(--aviso-claro); color: var(--aviso); border: 1px solid #f0d58f; border-radius: 999px;
  padding: .3em .8em; white-space: nowrap;
}
.demo-banda { background: var(--aviso-claro); color: var(--aviso); border-bottom: 1px solid #f0d58f; text-align: center; font-size: .86rem; font-weight: 600; padding: .45em 1em; }

/* ---------- cabecera pública ---------- */
.cab { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--linea); }
.cab .envoltorio { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: .5em; font-weight: 800; font-size: 1.2rem; color: var(--tinta); text-decoration: none; letter-spacing: -.02em; }
.logo:hover { color: var(--tinta); }
.logo-marca { width: 26px; height: 26px; flex: none; }
.cab nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.cab nav a { white-space: nowrap; color: var(--tinta-2); text-decoration: none; font-weight: 600; font-size: .95rem; }
.cab nav a:hover { color: var(--boli); }
.cab nav .btn { color: #fff; }
@media (max-width: 760px) { .cab nav a.nav-sec { display: none; } .cab nav { gap: 14px; } }

/* ---------- hero ---------- */
.hero { padding: 72px 0 64px; border-bottom: 1px solid var(--linea); background: linear-gradient(180deg, var(--papel) 0%, var(--fondo) 100%); }
.hero .envoltorio { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { max-width: 13em; }
.hero .entrada { font-size: 1.2rem; color: var(--tinta-2); max-width: 32em; }
.hero-acciones { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 28px 0 14px; }
.hero-nota { font-size: .92rem; color: var(--gris); }
@media (max-width: 900px) { .hero { padding: 44px 0; } .hero .envoltorio { grid-template-columns: 1fr; gap: 36px; } }

/* Hoja de respuestas del hero: el momento visual de la página */
.hoja {
  background: var(--papel); border: 1px solid var(--linea); border-radius: 14px; box-shadow: var(--sombra);
  padding: 22px 24px 18px; position: relative;
}
.hoja-cab { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 2px solid var(--tinta); padding-bottom: 10px; margin-bottom: 14px; gap: 12px; }
.hoja-cab strong { font-size: .95rem; }
.hoja-cab span { font-size: .82rem; color: var(--gris); }
.hoja-filas { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 28px; }
.fila { display: flex; align-items: center; gap: 9px; font-size: .85rem; }
.fila b { width: 1.6em; text-align: right; color: var(--gris); font-weight: 600; font-variant-numeric: tabular-nums; }
.burbuja {
  width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid #9aa4b6; display: grid; place-items: center;
  font-size: .68rem; font-weight: 600; color: #7c879b; position: relative; flex: none;
}
.burbuja::after { content: ""; position: absolute; inset: 2px; border-radius: 50%; background: var(--tinta); transform: scale(0); }
.hoja.animar .burbuja.x::after { animation: rellenar .28s ease-out forwards; animation-delay: calc(var(--i) * 90ms + 400ms); }
.hoja:not(.animar) .burbuja.x::after { transform: scale(1); }
@keyframes rellenar { to { transform: scale(1); } }
.burbuja.mal::after { background: var(--fallo); }
.burbuja.buena { border: 2.5px solid var(--acierto); color: var(--acierto); }
.hoja-pie { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; padding-top: 12px; border-top: 1px dashed var(--linea); font-size: .88rem; }
.nota-grande { font-size: 1.9rem; font-weight: 800; letter-spacing: -.03em; }
.hoja-cinta {
  position: absolute; top: -14px; left: 22px; background: var(--subrayado); color: var(--tinta); font-size: .78rem; font-weight: 600;
  padding: .25em .7em; border-radius: 4px; transform: rotate(-1.5deg);
}
@media (prefers-reduced-motion: reduce) { .hoja.animar .burbuja.x::after { animation: none; transform: scale(1); } }

/* ---------- secciones de la landing ---------- */
.seccion { padding: 84px 0; }
.seccion-gris { background: var(--fondo); border-top: 1px solid var(--linea); border-bottom: 1px solid var(--linea); }
.seccion-intro { max-width: 40em; margin-bottom: 40px; }
.seccion-intro p { color: var(--tinta-2); font-size: 1.08rem; }
@media (max-width: 700px) { .seccion { padding: 56px 0; } }

.pasos { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: paso; }
.pasos li { counter-increment: paso; border-top: 2px solid var(--tinta); padding-top: 18px; }
.pasos li::before { content: counter(paso); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--tinta); color: #fff; font-weight: 800; margin-bottom: 14px; }
.pasos p { color: var(--tinta-2); margin: 0; }
@media (max-width: 800px) { .pasos { grid-template-columns: 1fr; gap: 26px; } }

/* Ejemplo antes/después */
.ejemplo { display: grid; grid-template-columns: .9fr 1.1fr; gap: 0; border: 1px solid var(--linea); border-radius: 14px; overflow: hidden; background: var(--papel); box-shadow: var(--sombra); }
.ejemplo-pdf { background: #eef0f4; padding: 28px; border-right: 1px solid var(--linea); }
.ejemplo-pdf .etiqueta, .ejemplo-sal .etiqueta { font-size: .82rem; font-weight: 600; color: var(--gris); margin-bottom: 12px; display: block; }
.pagina-pdf { background: #fff; padding: 26px 24px; border-radius: 3px; box-shadow: 0 2px 10px rgba(0, 0, 0, .08); font-family: Georgia, "Times New Roman", serif; font-size: .86rem; line-height: 1.55; color: #222; }
.pagina-pdf p { margin: 0 0 .8em; text-align: justify; }
.pagina-pdf .pie { text-align: center; font-style: italic; font-size: .72rem; color: #888; margin-top: 18px; }
.ejemplo-sal { padding: 28px; }
.pestanas { display: flex; gap: 4px; border-bottom: 1px solid var(--linea); margin-bottom: 20px; overflow-x: auto; }
.pestanas button { font: inherit; font-weight: 600; font-size: .94rem; background: none; border: 0; border-bottom: 3px solid transparent; padding: .7em .9em; color: var(--gris); cursor: pointer; white-space: nowrap; }
.pestanas button[aria-selected="true"] { color: var(--tinta); border-bottom-color: var(--boli); }
@media (max-width: 860px) { .ejemplo { grid-template-columns: 1fr; } .ejemplo-pdf { border-right: 0; border-bottom: 1px solid var(--linea); } }

.pregunta-demo h4 { font-size: 1.02rem; font-weight: 600; margin-bottom: 14px; }
.opcion { display: flex; gap: 12px; align-items: flex-start; padding: 10px 12px; border: 1.5px solid var(--linea); border-radius: 8px; margin-bottom: 8px; font-size: .95rem; background: var(--papel); }
.opcion .burbuja { margin-top: 1px; }
.opcion.correcta { border-color: var(--acierto); background: var(--acierto-claro); }
.opcion.correcta .burbuja { border-color: var(--acierto); color: #fff; background: var(--acierto); }
.opcion.fallada { border-color: var(--fallo); background: var(--fallo-claro); }
.opcion.fallada .burbuja { border-color: var(--fallo); color: #fff; background: var(--fallo); }
.cita { border-left: 3px solid var(--subrayado); background: #fffbe6; padding: 10px 14px; border-radius: 0 6px 6px 0; font-size: .9rem; margin-top: 12px; color: var(--tinta-2); }
.cita b { color: var(--tinta); }

.mini-cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; font-size: .78rem; }
.mini-cal .d { border: 1px solid var(--linea); border-radius: 6px; padding: 6px; min-height: 64px; background: var(--papel); }
.mini-cal .d b { display: block; font-size: .75rem; color: var(--gris); margin-bottom: 3px; }
.mini-cal .d.descanso { background: var(--fondo); color: var(--gris); }
.chip { display: inline-block; font-size: .72rem; font-weight: 600; border-radius: 4px; padding: .1em .4em; margin: 1px 0; line-height: 1.35; }
.chip-estudio { background: var(--boli-claro); color: var(--boli-osc); }
.chip-repaso { background: #fff1c2; color: #6f5200; }
.chip-simulacro { background: var(--tinta); color: #fff; }
.chip-general { background: #ece3fb; color: #54318f; }

.oposiciones { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; padding: 0; list-style: none; }
.oposiciones li { border: 1px solid var(--linea); border-radius: 999px; padding: .45em 1em; font-size: .95rem; background: var(--papel); }

.dos-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 800px) { .dos-col { grid-template-columns: 1fr; gap: 28px; } }
.lista-check { list-style: none; padding: 0; margin: 0; }
.lista-check li { position: relative; padding-left: 32px; margin-bottom: 14px; }
.lista-check li::before { content: ""; position: absolute; left: 0; top: .2em; width: 20px; height: 20px; border-radius: 50%; background: var(--tinta); box-shadow: inset 0 0 0 5px var(--papel), 0 0 0 1.5px var(--tinta); }

/* ---------- precios ---------- */
.periodo { display: inline-flex; border: 1px solid var(--linea); border-radius: 999px; padding: 4px; background: var(--papel); margin-bottom: 28px; }
.periodo button { font: inherit; font-weight: 600; font-size: .92rem; border: 0; background: none; padding: .5em 1.1em; border-radius: 999px; cursor: pointer; color: var(--gris); }
.periodo button[aria-pressed="true"] { background: var(--tinta); color: #fff; }
.planes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan { background: var(--papel); border: 1px solid var(--linea); border-radius: 14px; padding: 28px 26px; display: flex; flex-direction: column; }
.plan.destacado { border: 2px solid var(--boli); box-shadow: var(--sombra); position: relative; }
.plan.destacado::before { content: "El más elegido"; position: absolute; top: -13px; left: 24px; background: var(--boli); color: #fff; font-size: .78rem; font-weight: 600; padding: .2em .7em; border-radius: 4px; }
.plan h3 { margin-bottom: 4px; }
.precio { font-size: 2.4rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; margin: 12px 0 2px; }
.precio small { font-size: .95rem; font-weight: 600; color: var(--gris); letter-spacing: 0; }
.plan .creditos { font-weight: 600; margin-bottom: 16px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 24px; font-size: .95rem; color: var(--tinta-2); flex: 1; }
.plan li { padding: 6px 0 6px 24px; position: relative; border-top: 1px solid var(--fondo); }
.plan li::before { content: ""; position: absolute; left: 2px; top: .8em; width: 11px; height: 11px; border-radius: 50%; background: var(--acierto); }
.precios-letra { font-size: .88rem; color: var(--gris); margin-top: 22px; max-width: 60em; }
@media (max-width: 900px) { .planes { grid-template-columns: 1fr; max-width: 460px; } }

/* ---------- FAQ ---------- */
.faq { max-width: 50em; }
.faq details { border-bottom: 1px solid var(--linea); padding: 4px 0; }
.faq summary { cursor: pointer; font-weight: 600; padding: 14px 32px 14px 0; list-style: none; position: relative; font-size: 1.05rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 10px; font-size: 1.4rem; color: var(--gris); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--tinta-2); padding-right: 32px; }

/* ---------- pie ---------- */
.pie-web { background: var(--tinta); color: #c9d1e2; padding: 44px 0 36px; font-size: .92rem; }
.pie-web .envoltorio { display: flex; flex-wrap: wrap; gap: 20px 40px; justify-content: space-between; align-items: flex-start; }
.pie-web a { color: #fff; text-decoration: none; }
.pie-web a:hover { text-decoration: underline; color: #fff; }
.pie-web nav { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.pie-web .logo { color: #fff; }

/* ---------- CTA final ---------- */
.cta-final { text-align: left; }
.cta-final .envoltorio { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.cta-final h2 { margin: 0; max-width: 18em; }

/* ---------- formularios ---------- */
label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; }
input[type="text"], input[type="email"], input[type="password"], input[type="date"], input[type="number"], select {
  width: 100%; font: inherit; font-size: 1rem; padding: .7em .85em; border: 1.5px solid var(--linea); border-radius: 8px; background: var(--papel); color: var(--tinta);
}
input:focus, select:focus { outline: none; border-color: var(--boli); box-shadow: 0 0 0 3px var(--boli-claro); }
.campo { margin-bottom: 16px; }
.ayuda { font-size: .85rem; color: var(--gris); margin-top: 5px; }

/* ---------- entrar ---------- */
.pagina-entrar { min-height: 100vh; display: grid; grid-template-rows: auto 1fr; background: var(--fondo); }
.tarjeta-entrar { width: 100%; max-width: 440px; margin: 48px auto; background: var(--papel); border: 1px solid var(--linea); border-radius: 14px; padding: 34px 30px; box-shadow: var(--sombra); }
.tarjeta-entrar h1 { font-size: 1.7rem; }
.cambio { margin-top: 18px; font-size: .95rem; text-align: center; color: var(--gris); }

/* ---------- avisos in-page ---------- */
.aviso { border-radius: 8px; padding: 12px 14px; font-size: .93rem; margin-bottom: 16px; border: 1px solid; }
.aviso-error { background: var(--fallo-claro); border-color: #ecc7c3; color: #7d241e; }
.aviso-info { background: var(--boli-claro); border-color: #c8d3f5; color: #1e3478; }
.aviso-ok { background: var(--acierto-claro); border-color: #b9dfc9; color: #0f5534; }
.aviso-atencion { background: var(--aviso-claro); border-color: #f0d58f; color: var(--aviso); }
#tostadas { position: fixed; z-index: 100; left: 50%; bottom: 22px; transform: translateX(-50%); display: flex; flex-direction: column; gap: 8px; width: min(92vw, 460px); pointer-events: none; }
.tostada { background: var(--tinta); color: #fff; border-radius: 10px; padding: 12px 16px; font-size: .94rem; box-shadow: 0 10px 30px rgba(0, 0, 0, .25); pointer-events: auto; animation: subir .2s ease-out; }
.tostada.error { background: #7d241e; }
.tostada.ok { background: #0f5534; }
@keyframes subir { from { opacity: 0; transform: translateY(8px); } }

/* ---------- ventanas (dialog) ---------- */
dialog.ventana { border: 0; border-radius: 16px; padding: 0; width: min(94vw, 520px); color: var(--tinta); box-shadow: 0 30px 80px rgba(10, 20, 40, .35); }
dialog.ventana.ancha { width: min(94vw, 880px); }
dialog.ventana::backdrop { background: rgba(20, 30, 50, .55); }
.ventana-cuerpo { padding: 28px 28px 24px; }
.ventana-cuerpo h2 { font-size: 1.5rem; }
.ventana-cerrar { position: absolute; top: 12px; right: 12px; width: 36px; height: 36px; border-radius: 50%; border: 0; background: var(--fondo); cursor: pointer; font-size: 1.2rem; color: var(--gris); }
.tarjeta-falsa { border: 1.5px dashed #c7cfdc; border-radius: 10px; padding: 14px; background: var(--fondo); margin: 16px 0; }
.tarjeta-falsa input { background: #eceff4; color: var(--gris); }
.fila-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.acciones-ventana { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; margin-top: 18px; }
.planes-mini { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0 6px; }
.planes-mini .plan { padding: 20px; }
.planes-mini .precio { font-size: 1.8rem; }
@media (max-width: 640px) { .planes-mini { grid-template-columns: 1fr; } }

/* ========================================================== APP ========= */
.app { min-height: 100vh; display: grid; grid-template-rows: auto auto 1fr; background: var(--fondo); }
.barra { background: var(--papel); border-bottom: 1px solid var(--linea); position: sticky; top: 0; z-index: 30; }
.barra-in { display: flex; align-items: center; gap: 16px; height: 60px; padding: 0 20px; }
.barra .derecha { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.pastilla-creditos {
  display: inline-flex; align-items: center; gap: .45em; font-weight: 800; font-size: .95rem; background: var(--boli-claro); color: var(--boli-osc);
  border-radius: 999px; padding: .4em .9em; border: 0; cursor: pointer; font-family: inherit; font-variant-numeric: tabular-nums;
}
.pastilla-creditos.bajo { background: var(--aviso-claro); color: var(--aviso); }
.pastilla-creditos.baja { animation: latido .5s ease-out; }
@keyframes latido { 40% { transform: scale(1.12); } }
.menu-cuenta { font-weight: 600; text-decoration: none; color: var(--tinta-2); font-size: .92rem; display: inline-flex; gap: .4em; align-items: center; }
@media (max-width: 640px) { .demo-banda .largo { display: none; } .barra .demo span.largo { display: none; } .menu-cuenta span { display: none; } }

.app-cuerpo { display: grid; grid-template-columns: 250px 1fr; min-height: 0; }
.lateral { background: var(--papel); border-right: 1px solid var(--linea); padding: 18px 12px; display: flex; flex-direction: column; gap: 4px; }
.lateral a { display: flex; align-items: center; gap: 10px; padding: .6em .8em; border-radius: 8px; color: var(--tinta-2); text-decoration: none; font-weight: 600; font-size: .95rem; }
.lateral a:hover { background: var(--fondo); color: var(--tinta); }
.lateral a[aria-current="page"] { background: var(--boli-claro); color: var(--boli-osc); }
.lateral svg { width: 20px; height: 20px; flex: none; }
.lateral h4 { font-size: .8rem; color: var(--gris); font-weight: 600; margin: 18px 12px 6px; }
.lateral .tema-link { font-weight: 400; font-size: .9rem; line-height: 1.3; }
.lateral .tema-link .n { margin-left: auto; font-size: .78rem; color: var(--gris); font-variant-numeric: tabular-nums; }
.principal { padding: 30px 34px 60px; min-width: 0; }
.principal > .contenido { max-width: 1000px; }
@media (max-width: 900px) {
  .app-cuerpo { grid-template-columns: 1fr; }
  .lateral { flex-direction: row; overflow-x: auto; padding: 8px 12px; border-right: 0; border-bottom: 1px solid var(--linea); gap: 2px; }
  .lateral a { white-space: nowrap; padding: .5em .7em; }
  .lateral h4, .lateral .tema-link { display: none; }
  .principal { padding: 22px 16px 60px; }
}

.titular { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-end; justify-content: space-between; margin-bottom: 24px; }
.titular h1 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0; letter-spacing: -.02em; }
.titular p { margin: 4px 0 0; color: var(--gris); }
.panel { background: var(--papel); border: 1px solid var(--linea); border-radius: var(--radio); padding: 22px 24px; margin-bottom: 18px; }
.panel h2 { font-size: 1.2rem; letter-spacing: -.01em; }
.panel h3 { font-size: 1.02rem; }

/* zona de subida */
.zona {
  border: 2px dashed #b6c0d2; border-radius: 12px; background: var(--papel); padding: 44px 24px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s;
}
.zona:hover, .zona.encima { border-color: var(--boli); background: var(--boli-claro); }
.zona svg { width: 44px; height: 44px; color: var(--boli); margin-bottom: 8px; }
.zona strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
.progreso { height: 10px; border-radius: 999px; background: var(--fondo); overflow: hidden; border: 1px solid var(--linea); }
.progreso > i { display: block; height: 100%; width: 0; background: var(--boli); transition: width .3s; }
.lista-temas { display: grid; gap: 10px; }
.item-tema { display: flex; gap: 16px; align-items: center; background: var(--papel); border: 1px solid var(--linea); border-radius: var(--radio); padding: 16px 18px; text-decoration: none; color: inherit; }
.item-tema:hover { border-color: #b6c0d2; color: inherit; }
.item-tema .info { flex: 1; min-width: 0; }
.item-tema strong { display: block; font-size: 1rem; line-height: 1.3; }
.item-tema .meta { font-size: .85rem; color: var(--gris); }
.item-tema .pct { font-weight: 800; font-size: 1.1rem; font-variant-numeric: tabular-nums; }
.vacio { text-align: center; padding: 48px 20px; color: var(--gris); }
.vacio strong { display: block; color: var(--tinta); font-size: 1.1rem; margin-bottom: 6px; }

.pestanas-app { display: flex; gap: 4px; border-bottom: 1px solid var(--linea); margin-bottom: 22px; }
.pestanas-app a { padding: .7em 1em; font-weight: 600; color: var(--gris); text-decoration: none; border-bottom: 3px solid transparent; margin-bottom: -1px; }
.pestanas-app a[aria-current="page"] { color: var(--tinta); border-bottom-color: var(--boli); }

/* resumen */
.resumen-texto p { font-size: 1.02rem; line-height: 1.7; max-width: 44em; }
.esquema { margin: 0; padding: 0; list-style: none; }
.esquema > li { border-left: 3px solid var(--tinta); padding: 2px 0 2px 16px; margin-bottom: 16px; }
.esquema > li > strong { display: block; margin-bottom: 4px; }
.esquema ul { margin: 0; padding-left: 20px; color: var(--tinta-2); }
.conceptos { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; margin: 0; }
.conceptos div { border: 1px solid var(--linea); border-radius: 8px; padding: 12px 14px; }
.conceptos dt { font-weight: 600; }
.conceptos dd { margin: 4px 0 0; font-size: .92rem; color: var(--tinta-2); }
.datos-caen { list-style: none; padding: 0; margin: 0; }
.datos-caen li { padding: 10px 0; border-bottom: 1px solid var(--fondo); }
.datos-caen .pg { font-size: .8rem; color: var(--gris); margin-left: 6px; white-space: nowrap; }

/* configuración de test */
.segmentos { display: inline-flex; flex-wrap: wrap; border: 1.5px solid var(--linea); border-radius: 10px; overflow: hidden; background: var(--papel); }
.segmentos button { font: inherit; font-weight: 600; font-size: .95rem; border: 0; background: none; padding: .6em 1em; cursor: pointer; color: var(--tinta-2); border-right: 1px solid var(--linea); }
.segmentos button:last-child { border-right: 0; }
.segmentos button[aria-pressed="true"] { background: var(--tinta); color: #fff; }
.origenes { display: grid; gap: 10px; }
.origen { display: flex; gap: 12px; align-items: flex-start; border: 1.5px solid var(--linea); border-radius: 10px; padding: 14px 16px; cursor: pointer; background: var(--papel); font-weight: 400; margin: 0; }
.origen input { margin-top: 5px; accent-color: var(--boli); }
.origen strong { display: block; }
.origen span { font-size: .9rem; color: var(--gris); }
.origen:has(input:checked) { border-color: var(--boli); background: var(--boli-claro); }
.origen.deshabilitado { opacity: .55; cursor: not-allowed; }
.config-fila { display: flex; flex-wrap: wrap; gap: 24px; margin-bottom: 20px; }

/* examen */
.examen { max-width: 780px; }
.examen-cab { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; font-size: .92rem; color: var(--gris); flex-wrap: wrap; }
.examen-pregunta { background: var(--papel); border: 1px solid var(--linea); border-radius: 12px; padding: 26px; }
.examen-pregunta h2 { font-size: 1.2rem; font-weight: 600; line-height: 1.4; letter-spacing: 0; margin-bottom: 20px; }
.opciones-examen { display: grid; gap: 10px; }
.opciones-examen button { display: flex; gap: 14px; align-items: flex-start; text-align: left; font: inherit; font-size: 1rem; width: 100%; padding: 14px 16px; border: 1.5px solid var(--linea); border-radius: 10px; background: var(--papel); cursor: pointer; color: var(--tinta); }
.opciones-examen button:hover { border-color: #aab5c9; }
.opciones-examen button .burbuja { width: 26px; height: 26px; font-size: .78rem; }
.opciones-examen button[aria-pressed="true"] { border-color: var(--tinta); background: #f3f5fa; }
.opciones-examen button[aria-pressed="true"] .burbuja { background: var(--tinta); border-color: var(--tinta); color: #fff; }
.examen-nav { display: flex; gap: 10px; justify-content: space-between; flex-wrap: wrap; margin-top: 18px; }
.rejilla { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 20px; }
.rejilla button { width: 34px; height: 34px; border-radius: 50%; border: 1.5px solid var(--linea); background: var(--papel); font: inherit; font-size: .8rem; font-weight: 600; cursor: pointer; color: var(--gris); font-variant-numeric: tabular-nums; }
.rejilla button.contestada { background: var(--tinta); color: #fff; border-color: var(--tinta); }
.rejilla button.actual { box-shadow: 0 0 0 3px var(--boli); }
.rejilla button.ok { background: var(--acierto); border-color: var(--acierto); color: #fff; }
.rejilla button.mal { background: var(--fallo); border-color: var(--fallo); color: #fff; }

.resultado-cab { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; }
.nota-circulo { width: 130px; height: 130px; border-radius: 50%; display: grid; place-items: center; border: 8px solid var(--acierto); text-align: center; }
.nota-circulo.suspenso { border-color: var(--fallo); }
.nota-circulo strong { font-size: 2.4rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; display: block; }
.nota-circulo span { font-size: .8rem; color: var(--gris); }
.cifras { display: flex; flex-wrap: wrap; gap: 22px; font-size: .95rem; }
.cifras b { font-size: 1.4rem; display: block; font-variant-numeric: tabular-nums; }
.revision { display: grid; gap: 14px; margin-top: 20px; }
.revision .examen-pregunta h2 { font-size: 1.05rem; margin-bottom: 12px; }
.estado-resp { font-size: .82rem; font-weight: 600; border-radius: 4px; padding: .15em .5em; }
.estado-resp.ok { background: var(--acierto-claro); color: var(--acierto); }
.estado-resp.mal { background: var(--fallo-claro); color: var(--fallo); }
.estado-resp.blanco { background: var(--fondo); color: var(--gris); }
@media (max-width: 560px) { .resultado-cab { grid-template-columns: 1fr; } }

.tabla { width: 100%; border-collapse: collapse; font-size: .93rem; }
.tabla th { text-align: left; font-size: .8rem; color: var(--gris); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--linea); }
.tabla td { padding: 10px; border-bottom: 1px solid var(--fondo); vertical-align: middle; }
.tabla-scroll { overflow-x: auto; }
.barra-pct { height: 8px; border-radius: 999px; background: var(--fondo); min-width: 80px; overflow: hidden; }
.barra-pct i { display: block; height: 100%; border-radius: 999px; }

/* plan de estudio */
.horas { display: grid; grid-template-columns: repeat(7, minmax(62px, 1fr)); gap: 8px; }
.horas label { font-size: .82rem; text-align: center; color: var(--gris); margin-bottom: 4px; }
.horas input { text-align: center; padding: .55em .3em; }
@media (max-width: 560px) { .horas { grid-template-columns: repeat(4, 1fr); } }
.lista-sel { display: grid; gap: 6px; max-height: 280px; overflow: auto; border: 1px solid var(--linea); border-radius: 8px; padding: 8px; }
.lista-sel label { display: flex; gap: 10px; align-items: center; font-weight: 400; font-size: .94rem; margin: 0; padding: 6px 8px; border-radius: 6px; }
.lista-sel label:hover { background: var(--fondo); }
.lista-sel input { accent-color: var(--boli); width: 18px; height: 18px; flex: none; }
.cal-nav { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.cal-nav strong { font-size: 1.1rem; min-width: 10em; text-align: center; }
.calendario { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.calendario .cab-dia { font-size: .78rem; color: var(--gris); font-weight: 600; text-align: center; padding-bottom: 2px; }
.calendario .dia { min-height: 92px; border: 1px solid var(--linea); border-radius: 8px; padding: 6px; background: var(--papel); font-size: .75rem; cursor: pointer; text-align: left; font-family: inherit; color: var(--tinta); display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.calendario .dia:hover { border-color: #aab5c9; }
.calendario .dia.fuera { visibility: hidden; }
.calendario .dia.hoy { box-shadow: inset 0 0 0 2px var(--boli); }
.calendario .dia.examen { background: var(--tinta); color: #fff; border-color: var(--tinta); }
.calendario .dia.sel { box-shadow: inset 0 0 0 2px var(--tinta); }
.calendario .dia b { font-size: .8rem; font-variant-numeric: tabular-nums; }
.calendario .dia .chip { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }
.calendario .dia .chip.hecha { opacity: .45; text-decoration: line-through; }
@media (max-width: 700px) { .calendario .dia { min-height: 56px; } .calendario .dia .chip { font-size: 0; height: 6px; padding: 0; } }
.sesiones { list-style: none; padding: 0; margin: 0; }
.sesiones li { display: flex; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--fondo); }
.sesiones li label { display: flex; gap: 12px; align-items: center; margin: 0; font-weight: 400; flex: 1; cursor: pointer; }
.sesiones input { width: 20px; height: 20px; accent-color: var(--acierto); flex: none; }
.sesiones .h { font-size: .85rem; color: var(--gris); white-space: nowrap; font-variant-numeric: tabular-nums; }
.sesiones li.hecha .t { text-decoration: line-through; color: var(--gris); }

/* progreso */
.cifras-grandes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.cifra { background: var(--papel); border: 1px solid var(--linea); border-radius: var(--radio); padding: 18px; }
.cifra b { display: block; font-size: 2rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.cifra span { font-size: .88rem; color: var(--gris); }
@media (max-width: 760px) { .cifras-grandes { grid-template-columns: 1fr 1fr; } }
.grafica svg { width: 100%; height: auto; display: block; }

/* cuenta */
.cuenta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .cuenta-grid { grid-template-columns: 1fr; } }
.dato-cuenta { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--fondo); gap: 12px; }
.dato-cuenta span { color: var(--gris); }
.historial { list-style: none; margin: 0; padding: 0; font-size: .92rem; }
.historial li { display: flex; justify-content: space-between; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--fondo); }
.historial .mas { color: var(--acierto); font-weight: 600; white-space: nowrap; }
.historial .menos { color: var(--fallo); font-weight: 600; white-space: nowrap; }
.historial time { display: block; font-size: .8rem; color: var(--gris); }

/* legales */
.legal { max-width: 46em; padding: 48px 22px 80px; margin: 0 auto; }
.legal h1 { font-size: 2.1rem; }
.legal h2 { font-size: 1.25rem; margin-top: 2em; letter-spacing: -.01em; }
.legal p, .legal li { color: var(--tinta-2); }
.rellenar { background: var(--aviso-claro); color: var(--aviso); border-radius: 4px; padding: 0 .3em; font-weight: 600; }

/* utilidades */
.fila-acciones { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.separa { margin-top: 18px; }
.spinner { width: 18px; height: 18px; border: 2.5px solid currentColor; border-right-color: transparent; border-radius: 50%; display: inline-block; animation: girar .7s linear infinite; vertical-align: -3px; }
@keyframes girar { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2s; } }
@media print { .barra, .lateral, .demo-banda, .no-imprimir { display: none !important; } .app-cuerpo { display: block; } }

/* ---------- asistente de dudas ---------- */
.chat-boton { position: fixed; right: 18px; bottom: 18px; z-index: 60; display: inline-flex; align-items: center; gap: 8px; border: 0; cursor: pointer;
  background: var(--tinta); color: #fff; font: inherit; font-weight: 600; font-size: .95rem; padding: .8em 1.1em; border-radius: 999px; box-shadow: 0 10px 30px rgba(20, 30, 50, .3); }
.chat-boton:hover { background: var(--boli); }
.chat-panel { position: fixed; right: 18px; bottom: 18px; z-index: 61; width: min(380px, calc(100vw - 24px)); height: min(560px, calc(100vh - 36px));
  background: var(--papel); border: 1px solid var(--linea); border-radius: 16px; box-shadow: 0 24px 60px rgba(20, 30, 50, .3); display: flex; flex-direction: column; overflow: hidden; }
.chat-panel[hidden] { display: none; }
.chat-cab { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; padding: 14px 16px; background: var(--tinta); color: #fff; }
.chat-cab strong { display: block; font-size: 1rem; }
.chat-cab span { font-size: .8rem; color: #c9d1e2; }
.chat-cerrar { border: 0; background: rgba(255, 255, 255, .12); color: #fff; width: 30px; height: 30px; border-radius: 50%; cursor: pointer; font-size: 1.1rem; flex: none; }
.chat-mensajes { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 8px; background: var(--fondo); }
.chat-msg { max-width: 88%; padding: 9px 12px; border-radius: 12px; font-size: .92rem; line-height: 1.5; }
.chat-msg.asistente { background: var(--papel); border: 1px solid var(--linea); align-self: flex-start; border-bottom-left-radius: 4px; }
.chat-msg.usuario { background: var(--boli); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.chat-msg.pensando { display: flex; gap: 4px; }
.chat-msg.pensando span { width: 7px; height: 7px; border-radius: 50%; background: var(--gris); animation: chatpunto 1s infinite; }
.chat-msg.pensando span:nth-child(2) { animation-delay: .15s; } .chat-msg.pensando span:nth-child(3) { animation-delay: .3s; }
@keyframes chatpunto { 50% { opacity: .25; } }
.chat-sugerencias { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 10px; background: var(--fondo); }
.chat-sugerencias:empty { display: none; }
.chat-sugerencias button { font: inherit; font-size: .82rem; border: 1px solid #c8d3f5; background: var(--boli-claro); color: var(--boli-osc); border-radius: 999px; padding: .35em .8em; cursor: pointer; }
.chat-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--linea); align-items: flex-end; }
.chat-form textarea { flex: 1; resize: none; font: inherit; font-size: .95rem; padding: .6em .7em; border: 1.5px solid var(--linea); border-radius: 8px; max-height: 110px; }
.chat-form textarea:focus { outline: none; border-color: var(--boli); }
.chat-nota { margin: 0; padding: 0 12px 10px; font-size: .72rem; color: var(--gris); }
@media (max-width: 560px) { .chat-panel { right: 0; bottom: 0; width: 100vw; height: 85vh; border-radius: 16px 16px 0 0; } .chat-boton span { display: none; } .chat-boton { padding: .85em; } }
@media print { .chat-boton, .chat-panel { display: none !important; } }

/* ---------- blog ---------- */
.blog-cab { padding: 56px 0 8px; background: linear-gradient(180deg, var(--papel), var(--fondo)); border-bottom: 1px solid var(--linea); }
.blog-cab p { color: var(--tinta-2); font-size: 1.1rem; max-width: 36em; }
.blog-lista { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 40px; }
.blog-item { background: var(--papel); border: 1px solid var(--linea); border-radius: 14px; padding: 24px 26px; display: flex; flex-direction: column; }
.blog-item.destacado { grid-column: 1 / -1; border-left: 5px solid var(--subrayado); }
.blog-item h2 { font-size: 1.3rem; letter-spacing: -.015em; margin: 6px 0 10px; }
.blog-item.destacado h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.blog-item h2 a { color: var(--tinta); text-decoration: none; }
.blog-item h2 a:hover { color: var(--boli); }
.blog-item p { color: var(--tinta-2); flex: 1; }
.blog-meta { font-size: .85rem; color: var(--gris); margin: 0; }
.blog-meta a { color: var(--gris); }
.blog-articulo { max-width: 44em; margin: 0 auto; padding: 48px 22px 70px; }
.blog-articulo h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); margin: 10px 0 12px; }
.blog-cuerpo { margin-top: 30px; font-size: 1.08rem; line-height: 1.75; }
.blog-cuerpo h2 { font-size: 1.5rem; margin-top: 1.8em; }
.blog-cuerpo h3 { font-size: 1.2rem; margin-top: 1.4em; }
.blog-cuerpo ul, .blog-cuerpo ol { padding-left: 1.3em; }
.blog-cuerpo li { margin-bottom: .45em; }
.blog-cuerpo blockquote { border-left: 4px solid var(--subrayado); margin: 1.4em 0; padding: .4em 1.1em; background: #fffbe6; }
.blog-cta { background: var(--tinta); color: #fff; border-radius: 16px; padding: 28px 30px; margin: 44px 0; }
.blog-cta h2 { color: #fff; font-size: 1.4rem; margin: 0 0 8px; }
.blog-cta p { color: #c9d1e2; }
.blog-relacionados ul { padding-left: 1.2em; }
.blog-relacionados li { margin-bottom: .5em; }
@media (max-width: 760px) { .blog-lista { grid-template-columns: 1fr; } }