/* Guía de estudio: Como agua para chocolate
   Diseño cálido de inspiración mexicana (papel picado, talavera), pero tranquilo:
   sin animaciones, buen contraste y la misma estructura en todas las pantallas. */

:root {
  --bg: #fffaf2;
  --bg-soft: #fff1e2;
  --paper: #ffffff;
  --ink: #261d1a;
  --ink-soft: #52453e;
  --line: #eadccb;
  --chili: #a3261a;
  --chili-d: #6e1810;
  --chili-t: #fbe9e4;
  --gold: #f2a900;
  --gold-t: #fff2c9;
  --gold-ink: #5e3d00;
  --teal: #0f6e75;
  --teal-t: #def2f1;
  --violet-t: #efe9f6;
  --violet-ink: #432766;
  --ok: #17632f;
  --ok-t: #e1f3e6;
  --bad: #9a1b1b;
  --bad-t: #f9e4e4;
  --focus: #0b57d0;
  --ac: #a3261a;      /* color del capítulo (se cambia por capítulo) */
  --ac-t: #fbe9e4;
  --radius: 20px;
  --shadow: 0 1px 2px rgba(58,42,36,.08), 0 10px 24px rgba(58,42,36,.09);
  --measure: 70ch;
}

html { font-size: 112.5%; scroll-behavior: auto; }
html[data-size="sm"] { font-size: 100%; }
html[data-size="md"] { font-size: 112.5%; }
html[data-spacing="on"] body { line-height: 1.95; letter-spacing: .02em; word-spacing: .08em; }
html[data-spacing="on"] p, html[data-spacing="on"] li { margin-bottom: 1.1em; }

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", Verdana, Tahoma, Arial, sans-serif;
  line-height: 1.65;
}

h1, h2, h3, h4 { line-height: 1.25; color: var(--chili-d); margin: 0 0 .5em; }
h1 { font-size: 2rem; font-family: Georgia, "Times New Roman", serif; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; max-width: var(--measure); }
ul, ol { padding-left: 1.4rem; margin: 0 0 1em; }
li { margin-bottom: .45em; max-width: var(--measure); }
a { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--chili); }
img { max-width: 100%; height: auto; }
strong { font-weight: 700; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
[tabindex="-1"]:focus { outline: none; }

.skip { position: absolute; left: -999px; top: 0; background: #fff; color: #000; padding: .7rem 1rem; z-index: 100; font-weight: 700; }
.skip:focus { left: 8px; top: 8px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.icon { display: inline-flex; line-height: 0; }
.icon svg { width: 100%; height: 100%; display: block; }

/* ---------- Encabezado ---------- */
.topbar {
  background: linear-gradient(120deg, #6e1810 0%, #a3261a 55%, #b8420f 100%);
  color: #fff; padding: .7rem 1.3rem; display: flex; gap: 1rem; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: .8rem; color: #fff; text-decoration: none; line-height: 1.2; }
.brand:hover { color: #fff; }
.brand:hover .brand-main { text-decoration: underline; }
.brand-mark { width: 2.9rem; height: 2.9rem; flex: none; }
.brand-text { display: flex; flex-direction: column; }
.brand-main { font-family: Georgia, "Times New Roman", serif; font-size: 1.3rem; font-weight: 700; }
.brand-sub { font-size: .92rem; font-weight: 600; color: #ffe2a3; }
.menu-toggle { display: none; }

/* Tira de papel picado (decoración) */
.papel {
  height: 30px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='30'%3E%3Cpath d='M0 2H120' stroke='%236e1810' stroke-width='2'/%3E%3Cpath d='M3 2h24v16l-12 9-12-9z' fill='%23f2a900'/%3E%3Cpath d='M33 2h24v16l-12 9-12-9z' fill='%231d8a92'/%3E%3Cpath d='M63 2h24v16l-12 9-12-9z' fill='%23d6336c'/%3E%3Cpath d='M93 2h24v16l-12 9-12-9z' fill='%237bb661'/%3E%3Ccircle cx='15' cy='11' r='3' fill='%23fff' fill-opacity='.85'/%3E%3Ccircle cx='45' cy='11' r='3' fill='%23fff' fill-opacity='.85'/%3E%3Ccircle cx='75' cy='11' r='3' fill='%23fff' fill-opacity='.85'/%3E%3Ccircle cx='105' cy='11' r='3' fill='%23fff' fill-opacity='.85'/%3E%3C/svg%3E") repeat-x;
  background-size: 120px 30px;
}

/* ---------- Menú ---------- */
.nav { background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 2px 8px rgba(58,42,36,.05); }
.nav ul.menu-links { list-style: none; margin: 0; padding: .55rem 1rem; display: flex; flex-wrap: wrap; gap: .35rem; }
.nav li { margin: 0; max-width: none; }
.nav a {
  display: block; color: var(--ink); text-decoration: none; padding: .55rem 1.05rem; font-weight: 600;
  border-radius: 999px; border: 2px solid transparent;
}
.nav a:hover { background: var(--chili-t); color: var(--chili-d); }
.nav a[aria-current="page"] { background: var(--chili); color: #fff; border-color: var(--chili); }

.menu-head { display: none; }
.menu-tools {
  display: flex; flex-wrap: wrap; gap: .7rem 1.2rem; align-items: center; padding: .6rem 1.2rem;
  background: var(--bg-soft); border-top: 1px solid var(--line);
}
.tool-group { display: flex; gap: .4rem; align-items: center; color: var(--ink); }
.tool-group .lbl { font-size: .9rem; font-weight: 600; margin-right: .2rem; }
.tool-btn {
  background: #fff; color: var(--chili-d); border: 2px solid var(--chili); border-radius: 12px;
  min-width: 2.7rem; min-height: 2.7rem; font-size: 1rem; font-weight: 700; cursor: pointer; padding: 0 .9rem; font-family: inherit;
}
.tool-btn:hover { background: var(--chili-t); }
.tool-btn[aria-pressed="true"] { background: var(--chili); color: #fff; }
.topbar .tool-btn { border-color: #fff; background: #fff; }
.search-form { display: flex; gap: .4rem; }
.search-form input {
  min-height: 2.7rem; border-radius: 12px; border: 2px solid var(--line); padding: 0 .9rem; font-size: 1rem; width: 17rem; max-width: 100%;
  background: #fff; font-family: inherit;
}

/* ---------- Contenedor ---------- */
main { max-width: 66rem; margin: 0 auto; padding: 1.8rem 1.2rem 3.5rem; }
.lead { font-size: 1.12rem; color: var(--ink-soft); }
.stack > * + * { margin-top: 1.4rem; }

.panel {
  background: var(--paper); border-radius: var(--radius); padding: 1.3rem 1.5rem; box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.panel > h2:first-child, .panel > h3:first-child { margin-top: 0; }
.notice { background: var(--gold-t); border-left: 8px solid var(--gold); padding: .8rem 1.1rem; border-radius: 12px; color: var(--ink); max-width: none; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem; min-height: 3rem; padding: .6rem 1.4rem;
  border-radius: 14px; border: 2px solid var(--ac, var(--chili)); background: var(--ac, var(--chili)); color: #fff; font-size: 1rem; font-weight: 700;
  cursor: pointer; text-decoration: none; font-family: inherit; box-shadow: 0 2px 0 rgba(0,0,0,.18);
}
.btn:hover { filter: brightness(.9); color: #fff; }
.btn.secondary { background: #fff; color: var(--ac, var(--chili-d)); box-shadow: none; }
.btn.secondary:hover { background: var(--ac-t, var(--chili-t)); filter: none; color: var(--ac, var(--chili-d)); }
.btn.small { min-height: 2.6rem; padding: .35rem 1rem; font-size: .95rem; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1rem 0; }

/* ---------- Etiquetas ---------- */
.tag {
  display: inline-block; font-size: .8rem; font-weight: 700; padding: .14rem .65rem; border-radius: 999px;
  border: 2px solid transparent; vertical-align: middle; margin-right: .4rem;
}
.tag.hecho { background: var(--teal-t); color: #0e3f44; border-color: var(--teal); }
.tag.interp { background: var(--violet-t); color: var(--violet-ink); border-color: var(--violet-ink); }
.tag.estudio { background: var(--gold-t); color: var(--gold-ink); border-color: var(--gold-ink); }
.tag.ok { background: var(--ok-t); color: var(--ok); border-color: var(--ok); }
.tag.pend { background: #fff; color: var(--ink-soft); border-color: var(--line); }
.tag.aparece { background: var(--teal-t); color: #0e3f44; border-color: var(--teal); }
.tag.menciona { background: #fff; color: var(--ink-soft); border-color: var(--ink-soft); }

/* ---------- Portada ---------- */
.hero {
  position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr; gap: 1.2rem; align-items: center;
  background: linear-gradient(135deg, #ffffff 0%, #fff1e2 100%); border-radius: 28px; padding: 2rem 2rem 2.6rem; box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 12px;
  background: repeating-linear-gradient(90deg, #a3261a 0 28px, #f2a900 28px 56px, #1d8a92 56px 84px, #d6336c 84px 112px);
}
.eyebrow {
  display: inline-block; font-weight: 700; color: #0e3f44; background: var(--teal-t); border: 2px solid var(--teal);
  border-radius: 999px; padding: .15rem .9rem; margin: 0 0 .8rem; font-size: .95rem;
}
.hero h1 { font-size: 2.7rem; margin-bottom: .15em; }
.hero .autora { font-size: 1.25rem; color: var(--ink-soft); margin-bottom: 1rem; }
.hero-art { width: 15rem; margin: 0 auto; }
@media (min-width: 46rem) { .hero { grid-template-columns: 1fr 17rem; } .hero-art { width: 100%; } }

.progress-box progress { width: 100%; height: 1.2rem; accent-color: var(--chili); }
.map { display: grid; grid-template-columns: repeat(6, 1fr); gap: .6rem; list-style: none; padding: 0; margin: 1rem 0 1.2rem; }
@media (max-width: 48rem) { .map { grid-template-columns: repeat(4, 1fr); gap: .3rem; } }
@media (max-width: 26rem) { .map { grid-template-columns: repeat(3, 1fr); } }
.resumen-grid { display: grid; grid-template-columns: 1fr; gap: 1rem 1.6rem; align-items: start; }
@media (min-width: 60rem) { .resumen-grid.con-foto { grid-template-columns: minmax(0, 1fr) 22rem; } }
.resumen-grid .fig { margin: 0; }
.map li { margin: 0; max-width: none; }
.map a {
  position: relative; display: flex; flex-direction: column; align-items: center; gap: .3rem; text-decoration: none; color: var(--ink);
  padding: .5rem .2rem; border-radius: 14px; font-weight: 600; font-size: .85rem; text-align: center;
}
.map a:hover { background: var(--ac-t); }
.map .icon { width: 3.6rem; height: 3.6rem; padding: .35rem; border-radius: 50%; background: #fff; border: 3px solid var(--ac); }
.map a.done .icon { background: var(--ac-t); }
.map a.done::after {
  content: "✓"; position: absolute; top: .3rem; right: calc(50% - 2.3rem); width: 1.4rem; height: 1.4rem; border-radius: 50%;
  background: var(--ok); color: #fff; font-size: .9rem; font-weight: 700; display: flex; align-items: center; justify-content: center; border: 2px solid #fff;
}
.steps { counter-reset: paso; list-style: none; padding: 0; }
.steps li { counter-increment: paso; display: flex; gap: .9rem; align-items: flex-start; }
.steps li::before {
  content: counter(paso); flex: 0 0 2.1rem; height: 2.1rem; border-radius: 50%; background: var(--chili); color: #fff;
  font-weight: 700; display: inline-flex; align-items: center; justify-content: center;
}

/* ---------- Tarjetas de capítulo ---------- */
.cards { display: grid; gap: 1.1rem; grid-template-columns: 1fr; padding: 0; list-style: none; }
@media (min-width: 36rem) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 62rem) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--paper); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
  margin: 0; max-width: none; border: 1px solid var(--line); padding: 0;
}
.card-top { background: var(--ac); color: #fff; padding: .9rem 1.1rem; display: flex; align-items: center; gap: .9rem; position: relative; }
.card-top::before {
  content: ""; position: absolute; right: -30px; top: -30px; width: 110px; height: 110px; border-radius: 50%; background: rgba(255,255,255,.14);
}
.card-top .icon { width: 3.9rem; height: 3.9rem; background: #fff; border-radius: 50%; padding: .45rem; flex: none; position: relative; }
.card-top .num { display: block; font-size: .85rem; font-weight: 700; }
.card-top .mes { display: block; font-size: 1.45rem; font-weight: 700; font-family: Georgia, "Times New Roman", serif; line-height: 1.15; }
.card-body { padding: .9rem 1.1rem 1.1rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.card .receta { color: var(--ink); margin: 0; font-size: .98rem; }
.card .push { margin-top: auto; }
.card.estudiado { border-color: var(--ok); }
.card.estudiado .card-top .num::after { content: " · ✓ estudiado"; }

/* ---------- Ficha de capítulo ---------- */
.crumbs { font-size: .95rem; margin-bottom: .8rem; }
.chapter-hero {
  position: relative; overflow: hidden; display: flex; gap: 1.4rem; align-items: center; color: #fff; background-color: var(--ac);
  background-image: radial-gradient(circle at 94% 8%, rgba(255,255,255,.17) 0 90px, transparent 91px), radial-gradient(circle at 80% 112%, rgba(255,255,255,.12) 0 110px, transparent 111px);
  border-radius: 26px; padding: 1.5rem 1.7rem; box-shadow: var(--shadow);
}
.chapter-hero .icon { width: 6.4rem; height: 6.4rem; background: #fff; border-radius: 50%; padding: .9rem; flex: none; box-shadow: 0 4px 0 rgba(0,0,0,.18); }
.chapter-hero h1 { color: #fff; font-size: 2.5rem; margin: 0 0 .1em; }
.chapter-hero .kicker { font-weight: 700; letter-spacing: .06em; text-transform: uppercase; font-size: .85rem; margin: 0 0 .2rem; }
.chapter-hero .receta { font-size: 1.2rem; margin: 0; font-family: Georgia, "Times New Roman", serif; }
.chapter-meta { margin: 1rem 0 .2rem; }
.mini-index { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; list-style: none; margin: 1rem 0; }
.mini-index li { margin: 0; }
.mini-index a {
  display: inline-block; padding: .4rem .9rem; border: 2px solid var(--ac); border-radius: 999px; text-decoration: none;
  background: #fff; color: var(--ink); font-size: .95rem; font-weight: 600;
}
.mini-index a:hover { background: var(--ac-t); }

.ficha {
  margin-top: 1.1rem; background: var(--paper); border: 1px solid var(--line); border-left: 8px solid var(--ac);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.ficha > h2 { margin: 0; font-size: 1.25rem; }
.ficha > h2 > button {
  width: 100%; text-align: left; background: #fff; color: var(--ink); border: 0; padding: 1.05rem 1.3rem; cursor: pointer;
  font-size: inherit; font-weight: 700; font-family: inherit; display: flex; gap: .9rem; align-items: center;
}
.ficha > h2 > button:hover { background: var(--ac-t); }
.ficha > h2 > button .sec-num {
  flex: none; width: 2.4rem; height: 2.4rem; border-radius: 50%; background: var(--ac); color: #fff; display: inline-flex;
  align-items: center; justify-content: center; font-weight: 700;
}
.ficha > h2 > button .sec-title { flex: 1; }
.ficha > h2 > button .estado { font-size: .85rem; font-weight: 600; color: var(--ink-soft); white-space: nowrap; }
.ficha.abierta > h2 > button { background: var(--ac-t); border-bottom: 1px solid var(--line); }
.ficha .cuerpo { padding: 1.2rem 1.4rem 1.4rem; }
.closed { display: none; }

.subpanel { border: 2px dashed var(--line); border-radius: 12px; padding: .9rem 1.1rem; margin-top: 1rem; background: #fffdf9; }
.eval-box { background: var(--gold-t); border: 2px solid var(--gold); border-radius: 14px; padding: .8rem 1.1rem; margin-top: 1rem; }
.eval-box h3 { color: var(--gold-ink); margin-top: 0; }
.cristiana { background: var(--violet-t); border: 2px solid var(--violet-ink); border-radius: 14px; padding: .8rem 1.1rem; margin-top: 1rem; }
.cristiana h3 { color: var(--violet-ink); margin-top: 0; }

.fig { margin: 1rem 0; max-width: 34rem; }
.fig img { border: 4px solid #fff; border-radius: 16px; display: block; box-shadow: var(--shadow); }
.fig figcaption { font-size: .9rem; color: var(--ink-soft); margin-top: .4rem; }

.person { border-top: 2px solid var(--line); padding: .9rem 0; }
.person:first-child { border-top: 0; }
.person h3 { margin-bottom: .2em; color: var(--ac); }

.event-list { padding-left: 0; list-style: none; counter-reset: ev; }
.event-list li { counter-increment: ev; padding-left: 2.8rem; position: relative; max-width: none; margin-bottom: .8em; }
.event-list li::before {
  content: counter(ev); position: absolute; left: 0; top: 0; width: 2.1rem; height: 2.1rem; border-radius: 50%;
  background: var(--ac); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700;
}

.words { display: grid; gap: .9rem; grid-template-columns: 1fr; padding: 0; list-style: none; }
@media (min-width: 40rem) { .words { grid-template-columns: repeat(2, 1fr); } }
.words li { border: 2px solid var(--ac-t); border-top: 6px solid var(--ac); border-radius: 14px; padding: .7rem 1rem .9rem; margin: 0; max-width: none; background: #fff; }
.words .p { font-weight: 700; color: var(--ac); font-size: 1.15rem; font-family: Georgia, "Times New Roman", serif; }

.qa { border-top: 2px solid var(--line); padding: .9rem 0; }
.qa:first-of-type { border-top: 0; }
.qa .q { font-weight: 600; margin-bottom: .6rem; }
.answer { margin-top: .6rem; padding: .75rem 1rem; background: var(--ok-t); border-left: 8px solid var(--ok); border-radius: 10px; }
.answer.interp { background: var(--violet-t); border-left-color: var(--violet-ink); }

.vf-item { border-top: 2px solid var(--line); padding: .9rem 0; }
.vf-item:first-of-type { border-top: 0; }
.vf-btns { display: flex; gap: .7rem; flex-wrap: wrap; margin: .5rem 0; }
.feedback { padding: .75rem 1rem; border-radius: 10px; margin-top: .5rem; font-weight: 500; }
.feedback.ok { background: var(--ok-t); border-left: 8px solid var(--ok); color: #0f4a22; }
.feedback.bad { background: var(--bad-t); border-left: 8px solid var(--bad); color: #6e1212; }

.value-card { border: 2px solid var(--ac-t); border-left: 8px solid var(--ac); border-radius: 14px; padding: .8rem 1.1rem; margin-bottom: 1rem; background: #fff; }
.value-card h3 { margin-top: 0; color: var(--ac); }
.value-card p { margin-bottom: .6rem; }

.review-card { border: 3px solid var(--ac); border-radius: 20px; padding: 1.1rem 1.3rem; background: #fff; box-shadow: var(--shadow); }
.review-card h2 a { color: var(--ac); }
.review-card h3 { color: var(--ac); }
.review-card + .review-card { margin-top: 1.2rem; }

.pager { display: flex; flex-wrap: wrap; gap: .7rem; justify-content: space-between; margin-top: 1.6rem; }

/* ---------- Personajes ---------- */
.char-grid { display: grid; gap: 1.1rem; grid-template-columns: 1fr; }
@media (min-width: 50rem) { .char-grid.dos { grid-template-columns: repeat(2, 1fr); } }
.char { background: #fff; border: 1px solid var(--line); border-top: 8px solid var(--ac); border-radius: 20px; padding: 1rem 1.3rem 1.2rem; box-shadow: var(--shadow); }
.char-head { display: flex; align-items: center; gap: .9rem; margin-bottom: .5rem; }
.avatar {
  flex: none; width: 3.4rem; height: 3.4rem; border-radius: 50%; background: var(--ac); color: #fff; display: inline-flex;
  align-items: center; justify-content: center; font-weight: 700; font-size: 1.15rem; font-family: Georgia, serif; box-shadow: 0 3px 0 rgba(0,0,0,.18);
}
.char h3 { margin: 0; color: var(--ink); }
.char dl { margin: 0; }
.char dt { font-weight: 700; color: var(--ac); margin-top: .7rem; }
.char dd { margin: 0 0 .2rem; }
.chap-links a { margin-right: .5rem; }
.diagram-wrap { overflow-x: auto; border: 2px solid var(--line); border-radius: 16px; background: #fff; padding: .5rem; }
.diagram-wrap svg { min-width: 46rem; width: 100%; height: auto; display: block; }
.legend { display: flex; flex-wrap: wrap; gap: .6rem 1.2rem; margin: .6rem 0; font-size: .95rem; }
.filter-input { min-height: 2.9rem; padding: 0 .9rem; font-size: 1rem; border: 2px solid var(--line); border-radius: 12px; width: 100%; max-width: 24rem; font-family: inherit; background: #fff; }

/* ---------- Temas ---------- */
.theme-list { padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; }
.theme-list li { margin: 0; }
.theme-list a { display: inline-block; border: 2px solid var(--line); border-radius: 999px; padding: .4rem .95rem; background: #fff; text-decoration: none; color: var(--ink); font-weight: 600; }
.theme-list a:hover { background: var(--bg-soft); }
.theme-block { border-left: 8px solid var(--ac); }
.theme-block h2 { color: var(--ac); }

/* ---------- Práctica ---------- */
fieldset { border: 2px solid var(--line); border-radius: 16px; padding: .8rem 1.1rem 1.1rem; margin: 0 0 1.1rem; background: #fff; }
legend { font-weight: 700; padding: 0 .5rem; color: var(--chili-d); font-size: 1.05rem; }
.check { display: flex; gap: .6rem; align-items: flex-start; padding: .35rem 0; max-width: none; }
.check input { width: 1.4rem; height: 1.4rem; margin-top: .2rem; accent-color: var(--chili); flex: 0 0 auto; }
.check label { cursor: pointer; }
.chip-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .2rem .8rem; }
@media (min-width: 40rem) { .chip-grid { grid-template-columns: repeat(3, 1fr); } }
.opt { display: flex; gap: .8rem; align-items: center; padding: .85rem 1.1rem; border: 2px solid var(--line); border-radius: 16px; margin-bottom: .7rem; background: #fff; max-width: none; cursor: pointer; }
.opt:hover { border-color: var(--chili); }
.opt input { width: 1.3rem; height: 1.3rem; accent-color: var(--chili); flex: 0 0 auto; }
.opt .letter { flex: none; width: 2.2rem; height: 2.2rem; border-radius: 50%; background: var(--chili-t); color: var(--chili-d); font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.opt.sel { border-color: var(--chili); background: var(--chili-t); }
.opt.correct { border-color: var(--ok); background: var(--ok-t); }
.opt.correct .letter { background: var(--ok); color: #fff; }
.opt.wrong { border-color: var(--bad); background: var(--bad-t); }
.opt.wrong .letter { background: var(--bad); color: #fff; }
textarea { width: 100%; min-height: 8rem; font-size: 1rem; font-family: inherit; padding: .8rem; border: 2px solid var(--line); border-radius: 14px; }
.qhead { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem; margin-bottom: .6rem; }
.score-big { font-size: 2.6rem; font-weight: 700; color: var(--chili-d); font-family: Georgia, serif; margin-bottom: .2rem; }
.result-item { border-top: 2px solid var(--line); padding: .9rem 0; }
.num-input { width: 6rem; min-height: 2.7rem; font-size: 1rem; padding: 0 .6rem; border: 2px solid var(--line); border-radius: 10px; font-family: inherit; }
select.num-input { width: auto; }
#pregunta { font-size: 1.4rem; }
progress { accent-color: var(--chili); width: 100%; height: 1rem; }

/* ---------- Buscar ---------- */
.result { border-top: 2px solid var(--line); padding: .8rem 0; max-width: none; }
.result mark { background: #ffe58a; color: #000; padding: 0 .1em; border-radius: 3px; }
.h3 { font-size: 1.15rem; }

/* ---------- Escuchar ---------- */
.listen { background: var(--teal-t); border: 2px solid var(--teal); border-radius: 16px; padding: .7rem 1rem; margin: .8rem 0; }
.listen .btn-row { margin: 0; align-items: center; }
.listen .btn { --ac: var(--teal); }
.listen-vel { font-weight: 600; }
.listen select { min-height: 2.8rem; font-size: 1rem; border: 2px solid var(--teal); border-radius: 10px; padding: 0 .5rem; background: #fff; font-family: inherit; }
.listen-status { display: block; margin-top: .4rem; font-size: .95rem; }
.listen-status:empty { display: none; }
.transport { margin-top: .6rem; }
.transport-btns { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; }
@media (min-width: 40rem) { .transport-btns { grid-template-columns: repeat(4, auto); justify-content: start; } }
.transport-bar { margin-top: .7rem; }
.transport-bar input[type="range"] { width: 100%; height: 2.2rem; accent-color: var(--teal); cursor: pointer; }
.listen-where { display: block; font-size: .95rem; margin-top: .2rem; }
.leyendo { background: #fff3c4; box-shadow: 0 0 0 4px #fff3c4; border-radius: 4px; }

/* ---------- Otras piezas ---------- */
.tabbar { display: none; }
.chapter-bar { display: none; }
.more-opts { margin: .6rem 0; }
.more-opts summary {
  display: inline-flex; align-items: center; min-height: 3rem; padding: .4rem 1.1rem; border: 2px solid var(--ac, var(--chili));
  border-radius: 14px; color: var(--ac, var(--chili-d)); font-weight: 700; cursor: pointer; background: #fff; list-style: none;
}
.more-opts summary::-webkit-details-marker { display: none; }
.more-opts summary::after { content: " ▾"; }
.more-opts[open] summary::after { content: " ▴"; }
.next-step { margin-top: 1.1rem; padding-top: .9rem; border-top: 2px dashed var(--line); }
.status-line { font-weight: 600; color: var(--ok); margin: 0; }
.status-line:not(:empty) { margin: .5rem 0 .3rem; }

/* ---------- Pie ---------- */
footer { background: linear-gradient(120deg, #4d100a, #6e1810); color: #fbe9e4; padding: 1.6rem 1.2rem 2.2rem; text-align: center; font-size: .95rem; }
footer p { margin-left: auto; margin-right: auto; }
footer .btn.secondary { color: var(--chili-d); }
.papel-foot { transform: scaleY(-1); }

/* ---------- Pantallas chicas (celulares) ---------- */
@media (max-width: 48rem) {
  body { padding-bottom: 5.2rem; }
  main { padding: 1rem .9rem 2.5rem; }
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.3rem; }
  .hero { padding: 1.3rem 1.2rem 2rem; border-radius: 22px; }
  .hero h1 { font-size: 2rem; }
  .hero .btn-row .btn, .btn-row .btn { width: 100%; }
  .btn { min-height: 3.2rem; }
  .topbar { padding: .55rem .8rem; }
  .brand-mark { width: 2.4rem; height: 2.4rem; }
  .brand-main { font-size: 1.1rem; }
  .brand-sub { font-size: .8rem; }
  .menu-toggle { display: inline-flex; align-items: center; min-height: 3rem; }

  /* Menú a pantalla completa */
  .nav { display: none; }
  .nav.open { display: block; position: fixed; inset: 0; z-index: 80; overflow-y: auto; background: #4d100a; }
  .menu-head { display: flex; justify-content: space-between; align-items: center; padding: .7rem .9rem; color: #fff; border-bottom: 1px solid rgba(255,255,255,.3); font-size: 1.25rem; }
  .nav ul.menu-links { flex-direction: column; padding: .4rem 0; gap: 0; }
  .nav a { color: #fff; padding: 1rem 1.2rem; font-size: 1.15rem; border-radius: 0; border: 0; border-bottom: 1px solid rgba(255,255,255,.18); border-left: 8px solid transparent; }
  .nav a:hover { background: rgba(255,255,255,.1); color: #fff; }
  .nav a[aria-current="page"] { background: rgba(255,255,255,.14); color: #fff; border-left-color: #ffd98a; }
  .nav a[aria-current="page"]::after { content: " (estás aquí)"; font-weight: 400; font-size: .8em; }
  .menu-tools { flex-direction: column; align-items: stretch; background: var(--chili-d); padding: 1rem; border-top: 0; }
  .menu-tools .tool-group { color: #fff; }
  .search-form { width: 100%; }
  .search-form input { flex: 1; width: auto; min-width: 0; }
  .tool-btn { min-height: 3rem; }
  body.menu-open { overflow: hidden; }

  /* Barra de abajo */
  .tabbar {
    display: grid; grid-template-columns: repeat(4, 1fr); position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
    background: #fff; border-top: 3px solid var(--chili); box-shadow: 0 -4px 14px rgba(58,42,36,.15);
  }
  .tabbar a, .tabbar button {
    display: flex; flex-direction: column; gap: .1rem; align-items: center; justify-content: center; text-align: center; min-height: 4.1rem; padding: .35rem .2rem;
    background: #fff; border: 0; color: var(--ink-soft); font-weight: 700; font-size: clamp(.82rem, 3.6vw, 1rem); text-decoration: none; font-family: inherit; cursor: pointer;
  }
  .tabbar .ui-icon { width: 1.7rem; height: 1.7rem; }
  .tabbar a[aria-current="page"] { background: var(--chili-t); color: var(--chili); box-shadow: inset 0 4px 0 var(--chili); }

  /* Tarjetas de capítulo: dos por fila */
  .cards { grid-template-columns: repeat(auto-fill, minmax(8.6rem, 1fr)); gap: .8rem; }
  .card-top { flex-direction: column; align-items: flex-start; gap: .4rem; padding: .8rem; }
  .card-top .icon { width: 3.2rem; height: 3.2rem; }
  .card-top .mes { font-size: 1.2rem; }
  .card-body { padding: .7rem .8rem .9rem; }
  .card .receta { font-size: .88rem; }
  .card.estudiado .card-top .num::after { content: " ✓"; }

  /* Ficha de capítulo */
  .chapter-hero { flex-direction: column; text-align: center; padding: 1.2rem; gap: .8rem; border-radius: 22px; }
  .chapter-hero .icon { width: 5rem; height: 5rem; padding: .7rem; }
  .chapter-hero h1 { font-size: 1.9rem; }
  .mini-index { display: none; }
  .chapter-bar {
    display: flex; gap: .5rem; align-items: center; position: sticky; top: 0; z-index: 30; background: #fff;
    border-bottom: 3px solid var(--ac); padding: .5rem .6rem; margin: -1rem -.9rem .8rem; box-shadow: 0 4px 10px rgba(58,42,36,.12);
  }
  .chapter-bar a.nav-cap {
    flex: 0 0 3.2rem; display: flex; align-items: center; justify-content: center; min-height: 3rem; border: 2px solid var(--ac);
    border-radius: 12px; font-size: 1.4rem; font-weight: 700; text-decoration: none; color: var(--ac); background: #fff;
  }
  .chapter-bar a.nav-cap[aria-disabled="true"] { visibility: hidden; }
  .chapter-bar select { flex: 1; min-width: 0; min-height: 3rem; font-size: 1rem; border: 2px solid var(--ac); border-radius: 12px; padding: 0 .5rem; background: #fff; color: var(--ink); font-family: inherit; }
  .ficha { scroll-margin-top: 4.5rem; }
  .ficha > h2 > button { padding: 1rem .9rem; min-height: 3.6rem; gap: .7rem; }
  .vf-btns .btn { flex: 1; }
  .pager .btn { width: 100%; }
  .ficha .cuerpo { padding: 1rem .9rem 1.2rem; }
}

/* En computador, la barra de capítulo no se muestra */
@media (min-width: 48.01rem) { .chapter-bar { display: none !important; } }

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

/* ---------- Impresión ---------- */
.print-only { display: none; }
@media print {
  html { font-size: 100% !important; }
  body { background: #fff; color: #000; line-height: 1.45; padding-bottom: 0 !important; }
  .topbar, .nav, footer, .no-print, .pager, .mini-index, .btn-row, .btn, .tool-btn, .skip, .vf-btns, .crumbs, .tabbar, .chapter-bar,
  .more-opts, .next-step, .status-line, .papel, .listen, .map { display: none !important; }
  .print-only { display: block; }
  main { max-width: none; padding: 0; }
  .closed { display: block !important; }
  .ficha, .panel, .review-card, .char, .card { box-shadow: none; border-color: #999; break-inside: avoid-page; }
  .chapter-hero { background: #fff !important; color: #000; box-shadow: none; border: 2px solid #999; }
  .chapter-hero h1, .chapter-hero .receta, .chapter-hero .kicker { color: #000; }
  .chapter-hero .icon { box-shadow: none; border: 1px solid #999; }
  .ficha > h2 > button { background: #fff !important; border: 0; color: #000; padding: .5rem 0; }
  .ficha > h2 > button .estado { display: none; }
  .ficha .cuerpo { padding: .3rem .2rem; }
  a { color: #000; text-decoration: none; }
  .answer::before { content: "Respuesta: "; font-weight: 700; }
  .feedback { display: none; }
}