/* ============================================================
   RobArte — Sistema de diseño
   Paleta extraída de la cubierta real del libro (Volumen 1):
   marfil de fondo, el teal oscuro de las cajas/lomo/banda
   inferior, el terracota de las etiquetas y el granate del
   logotipo y las fichas "RA-00X". Tipografía: serif en cursiva
   para títulos de obra/caso (como en el interior del libro),
   sans para todo lo demás.
   ============================================================ */

:root {
  --cream: #fcefe2;
  --paper: #fffdf8;
  --ink: #1c1c1d;
  --ink-soft: #55524c;
  --teal: #17505c;
  --teal-dark: #103a43;
  --terracotta: #d8543f;
  --garnet: #a8222d;
  --garnet-dark: #841b24;
  --grey-box: #e7e4dd;
  --line: #dcd3c2;

  --font-display: "Source Serif 4", Georgia, serif;
  --font-sans: "Work Sans", Arial, sans-serif;

  --radius: 2px;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.02rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Cabecera ---------- */

.site-header {
  background: var(--cream);
  border-bottom: 2px solid var(--teal);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 1rem;
}

.brand img {
  height: 52px;
  width: auto;
}

.nav-utility {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  font-size: 0.85rem;
}

.util-link {
  text-decoration: none;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.35rem 0.7rem;
  white-space: nowrap;
}

.util-link:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.lang-select {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.35rem 0.5rem;
  background: var(--paper);
  color: var(--ink);
}

.subnav {
  background: var(--teal);
}

.subnav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  row-gap: 0.1rem;
  column-gap: 1.2rem;
}

.subnav a {
  display: inline-block;
  text-decoration: none;
  color: #d8d3c8;
  font-size: 0.85rem;
  padding: 0.6rem 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.subnav a:hover,
.subnav a[aria-current="page"] {
  color: #fff;
  border-bottom-color: var(--garnet);
}

/* ---------- Etiqueta tipo "expediente" ---------- */

.case-tag {
  display: inline-block;
  background: var(--teal);
  color: var(--cream);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 0.32rem 0.85rem;
  border-radius: 999px;
}

.case-tag.garnet {
  background: var(--garnet);
}

.case-tag.terracotta {
  background: var(--terracotta);
}

/* ---------- Banda de introducción (qué es RobArte) ---------- */

.intro-band {
  background: var(--teal-dark);
  padding: 3.2rem 1.5rem;
  text-align: center;
}

.intro-band-inner {
  max-width: 640px;
  margin: 0 auto;
}

.intro-kicker {
  display: block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--terracotta);
  margin-bottom: 0.9rem;
}

.intro-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.7rem;
  line-height: 1.35;
  color: var(--cream);
  margin: 0;
}

.intro-copy {
  color: var(--cream);
  opacity: 0.9;
  font-size: 0.98rem;
  max-width: 46ch;
  margin: 1.1rem auto 0;
}

.intro-ctas {
  display: flex;
  justify-content: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

/* ---------- Hero de inicio ---------- */

.hero {
  padding: 3.5rem 1.5rem 1rem;
  text-align: center;
}

.hero-logo {
  max-width: 320px;
  margin: 0 auto 1.4rem;
}

.hero-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.35rem;
  max-width: 40ch;
  margin: 0 auto;
  color: var(--ink);
}

.hero-sub {
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 0.9rem auto 0;
  font-size: 0.98rem;
}

/* ---------- Cuadrícula de expedientes (opciones principales) ---------- */

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  padding: 2.5rem 0 4rem;
}

.option-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal);
  padding: 1.6rem 1.5rem 1.8rem;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.option-card:hover {
  border-top-color: var(--garnet);
  transform: translateY(-3px);
}

.option-card h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0.2rem 0 0;
}

.option-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  flex: 1;
}

.option-card .go {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--garnet);
}

/* ---------- Secciones generales ---------- */

section {
  padding: 3rem 0;
}

.section-intro {
  max-width: 62ch;
  margin: 0 auto 2.6rem;
}

.section-intro .case-tag {
  margin-bottom: 0.9rem;
}

.section-intro h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  margin: 0 0 0.6rem;
}

.section-intro p {
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- Ejemplo de expediente (teaser) ---------- */

.case-teaser {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1.8rem;
  align-items: start;
}

@media (max-width: 720px) {
  .case-teaser {
    grid-template-columns: 1fr;
  }
}

.case-teaser figure {
  margin: 0;
  border: 1px solid var(--line);
}

.case-teaser figcaption {
  font-size: 0.74rem;
  color: var(--ink-soft);
  padding: 0.4rem 0.5rem;
  border-top: 1px solid var(--line);
}

.case-teaser .case-tag {
  margin-bottom: 0.7rem;
}

.case-teaser h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  margin: 0 0 0.3rem;
}

.case-teaser .difficulty {
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  color: var(--garnet);
}

.case-teaser .meta-row {
  display: flex;
  gap: 1.5rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 0.6rem 0 1rem;
  flex-wrap: wrap;
}

/* ---------- Tarjetas de libro / caso ---------- */

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.8rem;
}

.book-card {
  background: var(--paper);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
}

.book-cover {
  aspect-ratio: 3 / 4;
  background: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.4rem;
  position: relative;
}

.book-cover img.mask-icon {
  width: 40px;
  opacity: 0.9;
}

.book-cover span {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--cream);
  font-size: 1rem;
  text-align: left;
}

.book-body {
  padding: 1.3rem 1.4rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.book-body h3 {
  margin: 0;
  font-size: 1.1rem;
  font-family: var(--font-display);
  font-weight: 700;
}

.book-body p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.book-meta {
  font-size: 0.78rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
  padding-top: 0.65rem;
  margin-top: auto;
}

.book-price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--garnet);
  margin: 0.4rem 0 0;
}

.book-actions {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* ---------- Botones ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.65rem 1.3rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid var(--teal);
  cursor: pointer;
  background: transparent;
  color: var(--teal);
}

.btn-primary {
  background: var(--teal);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--garnet);
  border-color: var(--garnet);
}

.btn-outline:hover {
  background: var(--teal);
  color: var(--cream);
}

.btn-small {
  font-size: 0.82rem;
  padding: 0.5rem 1rem;
}

.btn-outline-light {
  border-color: var(--cream);
  color: var(--cream);
}

.btn-outline-light:hover {
  background: var(--cream);
  color: var(--teal-dark);
}

.btn-disabled {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-soft);
  cursor: default;
  pointer-events: none;
}

/* ---------- Recuadros con cabecera gris (estilo ficha del libro) ---------- */

.info-box {
  border: 1px solid var(--line);
  background: var(--paper);
}

.info-box .info-box-head {
  background: var(--grey-box);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--line);
}

.info-box .info-box-body {
  padding: 0.9rem 0.9rem 1.1rem;
  font-size: 0.9rem;
}

/* ---------- Aviso / nota ---------- */

.note {
  border-left: 3px solid var(--garnet);
  background: var(--paper);
  padding: 0.8rem 1rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.note strong {
  color: var(--ink);
}

/* ---------- Casos imprimibles ---------- */

.printable-list {
  display: grid;
  gap: 1.2rem;
}

.printable-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 1.2rem;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1rem 1.2rem;
}

.printable-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 160px;
}

.printable-actions .btn {
  text-align: center;
}

@media (max-width: 560px) {
  .printable-row {
    grid-template-columns: 70px 1fr;
  }
  .printable-actions {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    min-width: 0;
  }
  .printable-actions .btn {
    flex: 1 1 auto;
  }
}

.printable-row img.thumb {
  border: 1px solid var(--line);
}

.printable-row h3 {
  margin: 0 0 0.2rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
}

.printable-row p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* ---------- Solucionario ---------- */

.solution-list {
  border: 1px solid var(--line);
  background: var(--paper);
}

.solution-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--line);
  gap: 1rem;
  flex-wrap: wrap;
}

.solution-row:last-child {
  border-bottom: none;
}

.solution-row h3 {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.02rem;
}

.solution-row .status {
  font-size: 0.76rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

/* ---------- Formularios ---------- */

.form-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1.8rem;
  max-width: 560px;
}

.form-card h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin: 0 0 0.4rem;
}

.form-card > p {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 1.3rem;
}

.field {
  margin-bottom: 1rem;
}

.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  background: var(--cream);
}

.field textarea {
  min-height: 110px;
  resize: vertical;
}

.contact-email {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--garnet);
  text-decoration: none;
}

/* ---------- Pie de página ---------- */

.site-footer {
  background: var(--teal);
  color: #cfe0dd;
  padding: 2.4rem 1.5rem;
  margin-top: 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.84rem;
}

.footer-inner a {
  color: #f2efe6;
  text-decoration: none;
}

.footer-links {
  display: flex;
  gap: 1.1rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.placeholder-note {
  display: inline-block;
  background: #fbeecb;
  border: 1px dashed var(--garnet);
  color: #6b3314;
  font-size: 0.8rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius);
  margin-bottom: 1.2rem;
}

/* ============================================================
   Jugar online — tablero interactivo del caso
   ============================================================ */

.game-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 860px) {
  .game-layout {
    grid-template-columns: 1fr;
  }
}

.suspect-tray {
  display: flex;
  gap: 0.7rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 1.6rem;
  padding-bottom: 0.3rem;
}

.suspect-token {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  padding: 0.6rem 0.6rem 0.5rem;
  cursor: pointer;
  width: 96px;
  flex: none;
  text-align: center;
  user-select: none;
}

.suspect-token img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--ink);
}

.suspect-token span {
  font-size: 0.74rem;
  font-weight: 600;
  line-height: 1.15;
}

.suspect-token span.role {
  font-size: 0.66rem;
  font-weight: 400;
  color: var(--ink-soft);
}

.suspect-token.armed {
  border-color: var(--garnet);
  background: #fbeeee;
}

.suspect-token.placed {
  opacity: 0.35;
}

.board-wrap {
  overflow-x: auto;
}

.board {
  display: grid;
  grid-template-columns: 36px repeat(5, 64px) 110px;
  grid-template-rows: 28px repeat(5, 64px) 24px;
  gap: 4px;
  font-size: 0.72rem;
  width: max-content;
  margin: 0 auto;
}

.board .hd {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  font-weight: 600;
}

.board .cell {
  background: var(--paper);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
}

.board .cell:hover {
  border-color: var(--garnet);
}

.board .cell .room-label {
  position: absolute;
  top: 3px;
  left: 4px;
  font-size: 0.6rem;
  color: var(--ink-soft);
  font-weight: 700;
}

.board .cell > img {
  width: 80%;
  height: 80%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--teal);
}

.board .exit-label {
  display: flex;
  align-items: center;
  font-size: 0.72rem;
  color: var(--ink-soft);
  padding-left: 0.4rem;
}

.notebook {
  border: 1px solid var(--line);
  background: var(--paper);
  margin-top: 1.8rem;
}

.notebook-head {
  background: var(--grey-box);
  padding: 0.6rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}

.notebook-row {
  display: grid;
  grid-template-columns: 130px 1fr 1fr 32px;
  gap: 0.8rem;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}

.notebook-row:last-child {
  border-bottom: none;
}

.notebook-row select {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  background: var(--cream);
}

.result-mark {
  font-weight: 700;
  text-align: center;
}

.result-mark.ok { color: #2e7d32; }
.result-mark.bad { color: var(--garnet); }

.clue-panel {
  border: 1px solid var(--line);
  background: var(--paper);
}

.clue-panel-head {
  background: var(--teal);
  color: var(--cream);
  padding: 0.7rem 1rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.clue-panel ol {
  margin: 0;
  padding: 1rem 1.2rem 1rem 2.4rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.clue-panel li {
  margin-bottom: 0.55rem;
}

.game-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.6rem;
  flex-wrap: wrap;
}

.game-feedback {
  margin-top: 1.2rem;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--line);
  background: var(--paper);
  font-size: 0.9rem;
  display: none;
}

.game-feedback.show {
  display: block;
}

.game-feedback.success {
  border-left-color: #2e7d32;
}

.game-feedback.fail {
  border-left-color: var(--garnet);
}

.game-feedback h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
}

/* ============================================================
   Cajas de pasos numerados (patrón "TU MISIÓN" de la cubierta)
   ============================================================ */

.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.mission-box {
  border: 1px solid var(--line);
  background: var(--paper);
}

.mission-box-head {
  color: var(--cream);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding: 0.7rem 1.1rem;
}

.mission-box.teal .mission-box-head {
  background: var(--teal);
}

.mission-box.terracotta .mission-box-head {
  background: var(--terracotta);
}

.mission-box-body {
  padding: 1.2rem 1.1rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mission-step {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
}

.mission-step .num {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--garnet);
  color: var(--cream);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mission-step h4 {
  margin: 0 0 0.15rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.mission-step p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* ============================================================
   La Unidad — carta de incorporación (memo oficial)
   ============================================================ */

.memo {
  background: var(--paper);
  border: 1px solid var(--line);
  max-width: 720px;
  margin: 0 auto;
}

.memo-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.6rem 1.8rem 1.2rem;
  border-bottom: 2px solid var(--ink);
  gap: 1rem;
}

.memo-head .badge {
  width: 54px;
  flex: none;
}

.memo-head .unit-name {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-align: right;
  line-height: 1.4;
}

.memo-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1.8rem 0;
  flex-wrap: wrap;
  gap: 1rem;
}

.memo-meta .ref {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.memo-meta .ref strong {
  color: var(--ink);
  font-weight: 700;
  display: block;
  letter-spacing: 0.03em;
}

.memo-stamp {
  width: 150px;
}

.memo-title {
  padding: 0.6rem 1.8rem 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.9rem;
}

.memo-body {
  padding: 1.2rem 1.8rem 0.4rem;
  font-size: 0.96rem;
}

.memo-body p {
  margin: 0 0 1rem;
}

.memo-body p.emphasis {
  font-style: italic;
}

.memo-order {
  margin: 1.2rem 1.8rem;
  border: 1px solid var(--line);
  padding: 0.9rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.86rem;
  font-weight: 600;
}

.memo-order img {
  width: 26px;
  flex: none;
}

.memo-signoff {
  padding: 0.4rem 1.8rem 2rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.memo-signature img.firma {
  width: 170px;
  margin-bottom: 0.2rem;
}

.memo-signature .signee {
  font-weight: 700;
  font-size: 0.9rem;
}

.memo-signature .role {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.memo-seal {
  width: 96px;
  flex: none;
  opacity: 0.9;
}

/* ---------- Doctrina (recuadro negro del manual) ---------- */

.doctrine-box {
  background: var(--ink);
  color: var(--cream);
  padding: 1.1rem 1.3rem;
  font-size: 0.9rem;
}

.doctrine-box strong {
  display: block;
  margin-bottom: 0.3rem;
}

/* ---------- Protocolo (manual de investigación) ---------- */

.protocol-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
}

.protocol-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.2rem;
  align-items: flex-start;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 1.1rem 1.3rem;
}

.protocol-item .ghost-num {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 2.1rem;
  color: var(--line);
  line-height: 1;
}

.protocol-item h3 {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
}

.protocol-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.protocol-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--terracotta);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
  display: block;
}

/* ---------- Hero con portada del libro ---------- */

.hero-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2.8rem;
  align-items: center;
  text-align: left;
  max-width: 760px;
  margin: 0 auto;
}

.hero-grid .hero-cover img {
  width: 100%;
  box-shadow: 10px 10px 0 var(--teal);
}

.hero-grid .hero-tagline,
.hero-grid .hero-sub {
  margin-left: 0;
  margin-right: 0;
  max-width: 46ch;
}

.hero-grid .hero-ctas {
  justify-content: flex-start !important;
}

@media (max-width: 780px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-grid .hero-cover {
    max-width: 240px;
    margin: 0 auto;
  }
  .hero-grid .hero-tagline,
  .hero-grid .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-grid .hero-ctas {
    justify-content: center !important;
  }
}

/* ---------- Tarjeta de libro con portada real ---------- */

.book-card.featured {
  max-width: 340px;
  margin: 0 auto;
}

.book-cover.real-cover {
  background: var(--paper);
  padding: 0;
  aspect-ratio: auto;
}

.book-cover.real-cover img.cover-photo {
  width: 100%;
  display: block;
  border-bottom: 3px solid var(--teal);
}

.upcoming-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.upcoming-list li {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  border: 1px dashed var(--line);
  padding: 0.6rem 0.9rem;
}

.upcoming-list .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
  flex: none;
}

/* ============================================================
   Solucionario ampliado — acordeón de ayuda progresiva
   ============================================================ */

.sol-toolbar {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}

.sol-toolbar input[type="search"] {
  flex: 1;
  min-width: 200px;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  background: var(--paper);
}

.sol-case {
  border: 1px solid var(--line);
  background: var(--paper);
  margin-bottom: 0.7rem;
}

.sol-case-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.1rem;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
}

.sol-case-id {
  font-weight: 700;
  color: var(--teal);
  font-size: 0.85rem;
  flex: none;
  width: 64px;
}

.sol-case-title {
  flex: 1;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1rem;
  color: var(--ink);
}

.sol-case-toggle {
  font-size: 0.78rem;
  color: var(--ink-soft);
  flex: none;
}

.sol-case-body {
  display: none;
  padding: 0 1.1rem 1.3rem;
  border-top: 1px solid var(--line);
}

.sol-case.open .sol-case-body {
  display: block;
}

.sol-case.open .sol-case-head {
  border-bottom: 1px solid var(--line);
}

.sol-case-pista {
  padding: 0 1.1rem 1.1rem;
  border-top: 1px solid var(--line);
}

.sol-case-pista .pista-panel {
  margin-top: 1rem;
}

.sol-step {
  margin-top: 1.1rem;
}

.sol-step-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--terracotta);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.sol-step p {
  margin: 0;
  font-size: 0.92rem;
}

.sol-reveal-btn {
  margin-top: 1rem;
  background: none;
  border: 1px dashed var(--teal);
  color: var(--teal);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
}

.sol-reveal-btn:hover {
  background: var(--teal);
  color: var(--cream);
}

.sol-final {
  margin-top: 1.2rem;
  background: var(--ink);
  color: var(--cream);
  padding: 1.1rem 1.2rem;
}

/* ---------- Pista adicional (Jugar online) ---------- */

.pista-panel {
  display: none;
  margin-top: 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1.1rem 1.2rem;
}

.pista-panel.open {
  display: block;
}

.pista-panel-label {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--terracotta);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.pista-panel p {
  margin: 0;
  font-size: 0.92rem;
}

.sol-final-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.sol-final-table div span {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: #b9c9c6;
  margin-bottom: 0.15rem;
}

.sol-final-table div strong {
  font-size: 0.95rem;
}

.sol-final .informe-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--terracotta);
  display: block;
  margin-bottom: 0.35rem;
}

.sol-final p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
}

/* ---------- Indicador de dificultad (glifo "A" repetido, como en el libro) ---------- */

.difficulty {
  display: inline-flex;
  align-items: center;
  gap: 1px;
}

.difficulty img {
  height: 0.85em;
  width: auto;
  display: inline-block;
}

.difficulty-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  text-transform: uppercase;
  margin-right: 0.3rem;
}

/* ---------- Selector de casos jugables ---------- */

.case-picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.case-picker-card {
  background: var(--paper);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.15s ease;
}

.case-picker-card:hover {
  transform: translateY(-3px);
}

.case-picker-card img.thumb {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 3px solid var(--teal);
}

.case-picker-card .body {
  padding: 1.1rem 1.2rem 1.3rem;
}

.case-picker-card h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  margin: 0.3rem 0 0;
}

/* ---------- App (próximamente) ---------- */

.app-coming-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 2.4rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.app-coming-logo {
  width: 56px;
  opacity: 0.85;
  margin-bottom: 0.4rem;
}

.app-coming-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.app-coming-card p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 480px;
}

.app-store-badges {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1rem;
}

/* ---------- Galería de arte ---------- */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1.1rem;
}

.gallery-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 0;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.gallery-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(28, 28, 29, 0.12);
}

.gallery-thumb-wrap {
  position: relative;
  display: block;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--grey-box);
}

.gallery-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-case-badge {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  background: rgba(28, 28, 29, 0.72);
  color: var(--cream);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius);
}

.gallery-card-body {
  padding: 0.7rem 0.8rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.gallery-obra {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.25;
}

.gallery-autor {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

/* ---------- Lightbox de la galería ---------- */

.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 16, 0.92);
  z-index: 200;
  padding: 2rem 1rem;
  overflow-y: auto;
}

.lightbox-overlay.open {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.lightbox-box {
  position: relative;
  background: var(--paper);
  max-width: 960px;
  width: 100%;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  margin: auto;
}

.lightbox-img-wrap {
  background: var(--grey-box);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
}

.lightbox-img {
  max-width: 100%;
  max-height: 78vh;
  display: block;
  margin: 0 auto;
}

.lightbox-info {
  padding: 1.6rem 1.6rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.lightbox-info .case-tag {
  align-self: flex-start;
}

.lightbox-obra {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.3rem;
  margin: 0.2rem 0 0;
}

.lightbox-autor-fecha {
  margin: 0;
  font-weight: 600;
}

.lightbox-institucion {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.lightbox-credito {
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
  padding-top: 0.6rem;
}

.lightbox-links {
  margin-top: 0.6rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.lightbox-links a {
  font-size: 0.82rem;
  color: var(--garnet);
  text-decoration: none;
  font-weight: 600;
}

.lightbox-links a:hover {
  text-decoration: underline;
}

.lightbox-close {
  position: absolute;
  top: 0.6rem;
  right: 0.8rem;
  background: none;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ink-soft);
  z-index: 2;
}

.lightbox-close:hover {
  color: var(--garnet);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  font-size: 1.6rem;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  cursor: pointer;
  color: var(--ink);
  z-index: 2;
}

.lightbox-prev {
  left: 0.6rem;
}

.lightbox-next {
  right: 0.6rem;
}

@media (max-width: 720px) {
  .lightbox-box {
    grid-template-columns: 1fr;
  }
}

/* ---------- Regla y declaraciones del expediente (juego) ---------- */

.clue-section-label {
  background: var(--grey-box);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.rule-box {
  margin: 0;
  padding: 0.9rem 1.2rem;
  font-size: 0.86rem;
  background: #fbeecb;
  border-bottom: 1px solid var(--line);
}

.rule-box strong {
  color: var(--garnet);
}

.declaration-list {
  margin: 0;
  padding: 0.9rem 1.2rem 1rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.declaration-list p {
  margin: 0 0 0.6rem;
}

.declaration-list p:last-child {
  margin-bottom: 0;
}

.declaration-list strong {
  color: var(--ink);
}

/* ---------- Elementos del plano (cámaras, plantas, cajas, salidas) ---------- */

.board {
  position: relative;
}

.cell {
  position: relative;
}

.element-box {
  border: 1.5px solid var(--ink);
  background: var(--paper);
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.2rem 0.3rem;
  text-align: center;
  line-height: 1.1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 60%;
}

.element-box.wheels {
  position: relative;
  margin-bottom: 6px;
}

.element-box.wheels::before,
.element-box.wheels::after {
  content: "";
  position: absolute;
  bottom: -6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
}

.element-box.wheels::before { left: 18%; }
.element-box.wheels::after { right: 18%; }

.plant-icon {
  width: 60%;
  height: auto;
  opacity: 0.9;
}

.plant-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* La cámara se representa pegada a la pared de la que "cuelga", con
   una flecha junto a ella indicando el sentido de vigilancia, igual
   que en el plano impreso del libro. */
.camera-icon-wrap {
  position: absolute;
  inset: 4px;
  display: flex;
  gap: 2px;
  pointer-events: none;
}

.camera-icon-wrap.dir-E { flex-direction: row; justify-content: flex-start; align-items: center; }
.camera-icon-wrap.dir-W { flex-direction: row; justify-content: flex-end; align-items: center; }
.camera-icon-wrap.dir-S { flex-direction: column; justify-content: flex-start; align-items: center; }
.camera-icon-wrap.dir-N { flex-direction: column; justify-content: flex-end; align-items: center; }

.camera-icon {
  width: 46%;
  height: auto;
  opacity: 0.95;
  flex: none;
}

.camera-arrow {
  width: 42%;
  height: auto;
  opacity: 1;
  flex: none;
  filter: brightness(0) saturate(100%);
}

.wall-edge {
  position: absolute;
  background: var(--ink);
}

.wall-edge.bottom { left: 0; right: 0; bottom: -2px; height: 4px; }
.wall-edge.right { top: 0; bottom: 0; right: -2px; width: 4px; }
.wall-edge.top { left: 0; right: 0; top: -2px; height: 4px; }
.wall-edge.left { top: 0; bottom: 0; left: -2px; width: 4px; }

.exit-tag {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.4rem;
  text-align: center;
  white-space: nowrap;
}

.exit-tag.side-top,
.exit-tag.side-bottom {
  writing-mode: horizontal-tb;
}

.exit-tag.side-left,
.exit-tag.side-right {
  writing-mode: horizontal-tb;
}

/* ---------- Logo integrado en una frase ---------- */

.inline-logo {
  display: inline-block;
  height: 1.5em;
  width: auto;
  vertical-align: -0.4em;
}

/* ---------- Redes sociales (footer) ---------- */

.social-icons {
  display: flex;
  gap: 0.9rem;
  align-items: center;
}

.social-icons a {
  color: var(--text-light, #f2efe6);
  display: inline-flex;
  opacity: 0.85;
}

.social-icons a:hover {
  opacity: 1;
}

.social-icons svg {
  width: 19px;
  height: 19px;
}

.footer-links .social-item a {
  display: inline-flex;
  align-items: center;
}

.footer-links .social-item svg {
  width: 18px;
  height: 18px;
}

/* ---------- Pie legal (aviso legal, privacidad, cookies) ---------- */

.legal-bar {
  max-width: var(--max-width);
  margin: 1.2rem auto 0;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(242, 239, 230, 0.15);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.78rem;
}

.legal-bar a {
  color: #cfe0dd;
  text-decoration: none;
}

.legal-bar a:hover {
  text-decoration: underline;
}

.legal-bar ul {
  display: flex;
  gap: 1.1rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

/* ---------- Contenido de páginas legales ---------- */

.legal-content h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p,
.legal-content li {
  font-size: 0.94rem;
  color: var(--ink-soft);
  margin: 0 0 0.8rem;
}

.legal-content ul {
  padding-left: 1.3rem;
}

.legal-content strong {
  color: var(--ink);
}

.legal-updated {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 2rem;
}