/* ---------- Base and accessibility ---------- */

:root {
  --tam-base: 18px;
  --color-fondo: #fbfaf7;
  --color-texto: #202020;
  --color-primario: #0a5c78;
  --color-primario-oscuro: #073f52;
  --color-tarjeta: #ffffff;
  --color-borde: #d8d3c8;
  --color-acento: #b45309;
  --color-foco: #d6001c;
  --radio: 14px;
}

* { box-sizing: border-box; }

html { font-size: var(--tam-base); scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-fondo);
  color: var(--color-texto);
  font-family: "Atkinson Hyperlegible", "Segoe UI", Verdana, Arial, sans-serif;
  line-height: 1.6;
}

h1, h2, h3 { line-height: 1.25; }

a { color: var(--color-primario-oscuro); }

/* Focus always visible, for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-foco);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primario-oscuro);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus {
  left: 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Header ---------- */

.cabecera {
  background: var(--color-primario);
  color: #fff;
  padding: 1.25rem 1.25rem 1rem;
}

.cabecera-fila {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cabecera h1 {
  margin: 0;
  font-size: 1.9rem;
}
.cabecera h1 a {
  color: #fff;
  text-decoration: none;
}
.cabecera-punto { color: var(--color-acento); }

.tagline {
  margin: 0;
  opacity: 0.92;
  font-size: 1.05rem;
}

.a11y-barra {
  max-width: 900px;
  margin: 0.9rem auto 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.a11y-etiqueta { opacity: 0.9; }

.a11y-grupo { display: inline-flex; gap: 0.3rem; }

.idioma-selector {
  display: inline-flex;
  gap: 0.3rem;
  padding-right: 0.6rem;
  margin-right: 0.3rem;
  border-right: 1px solid rgba(255,255,255,0.4);
}

.a11y-barra button {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.6);
  color: #fff;
  border-radius: 8px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  font-size: 1rem;
}
.a11y-barra button:hover { background: rgba(255,255,255,0.25); }

.idioma-btn.activo,
.idioma-btn[aria-pressed="true"] {
  background: var(--color-acento);
  border-color: var(--color-acento);
  font-weight: bold;
}

.a11y-contraste[aria-pressed="true"] {
  background: #fff;
  color: var(--color-primario-oscuro);
  font-weight: bold;
}

/* ---------- Main content ---------- */

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

/* ---------- Hero: word of the day and progress ---------- */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.hero-palabra,
.hero-progreso {
  background: var(--color-tarjeta);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 1.25rem 1.4rem;
}

.hero-palabra {
  background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-primario-oscuro) 100%);
  color: #fff;
  border: none;
}

.hero-etiqueta {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  opacity: 0.9;
}

.hero-palabra-nombre {
  margin: 0.2rem 0 1rem;
  font-size: 2rem;
  font-weight: bold;
}

.boton-cta {
  display: inline-block;
  background: var(--color-acento);
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.05rem;
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 3px 0 rgba(0,0,0,0.2);
}
.boton-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 10px rgba(0,0,0,0.25);
}
.boton-cta:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.2);
}

.boton-secundario {
  background: var(--color-primario);
  white-space: nowrap;
  font-size: 1rem;
}

.hero-progreso {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-progreso-texto {
  margin: 0 0 0.6rem;
  font-weight: bold;
  color: var(--color-primario-oscuro);
}

.barra-progreso {
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: 999px;
  height: 1rem;
  overflow: hidden;
}

.barra-progreso-relleno {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-acento), var(--color-primario));
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.barra-progreso-relleno.animar-relleno {
  animation: destello-progreso 0.6s ease;
}

@keyframes destello-progreso {
  0% { filter: brightness(1); }
  40% { filter: brightness(1.6); }
  100% { filter: brightness(1); }
}

@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; }
}

/* ---------- Search box ---------- */

.buscador label {
  display: block;
  font-weight: bold;
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

.buscador-fila {
  display: flex;
  gap: 0.6rem;
  align-items: stretch;
}

.buscador-fila #buscar {
  flex: 1;
  /* iOS Safari otherwise keeps the rendered <input> wide enough to fit its
     placeholder in one line, so the two buttons squeeze the field out of
     view at narrow widths (375px iPhone and similar). min-width:0 lets
     flex actually shrink it. */
  min-width: 0;
}

#buscar {
  width: 100%;
  font-size: 1.15rem;
  padding: 0.7rem 0.9rem;
  border: 2px solid var(--color-borde);
  border-radius: var(--radio);
  background: var(--color-tarjeta);
  color: var(--color-texto);
}

.ayuda-texto {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  color: #4a4a4a;
}

.resultados-info {
  margin: 0.5rem 0 0;
  font-weight: bold;
  color: var(--color-primario-oscuro);
  min-height: 1.4em;
}

.filtros {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.filtros-etiqueta { font-weight: bold; }

.filtro-btn {
  background: var(--color-tarjeta);
  border: 2px solid var(--color-borde);
  border-radius: 999px;
  padding: 0.35rem 0.95rem;
  cursor: pointer;
  font-size: 1rem;
  color: var(--color-texto);
}
.filtro-btn.activo,
.filtro-btn[aria-pressed="true"] {
  background: var(--color-primario);
  border-color: var(--color-primario);
  color: #fff;
  font-weight: bold;
}

.alfabeto {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 1rem;
}
.alfabeto button {
  min-width: 2.2rem;
  padding: 0.3rem;
  border: 1px solid var(--color-borde);
  background: var(--color-tarjeta);
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
}
.alfabeto button.activo {
  background: var(--color-acento);
  border-color: var(--color-acento);
  color: #fff;
}
.alfabeto button:disabled {
  opacity: 0.35;
  cursor: default;
}

/* ---------- Result cards ---------- */

.tarjetas {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
}

.tarjeta {
  position: relative;
  background: var(--color-tarjeta);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 1rem 1.1rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.tarjeta:hover,
.tarjeta:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 8px 18px rgba(10, 92, 120, 0.15);
  border-color: var(--color-primario);
}

.tarjeta a.tarjeta-enlace {
  text-decoration: none;
  color: inherit;
  display: block;
}

.tarjeta-imagen {
  display: block;
  width: 100%;
  height: 110px;
  object-fit: contain;
  margin-bottom: 0.6rem;
  background: var(--color-fondo);
  border-radius: 10px;
  transition: transform 0.18s ease;
}

.tarjeta:hover .tarjeta-imagen {
  transform: scale(1.06);
}

.tarjeta-aprendida {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: var(--color-primario);
  color: #fff;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: bold;
}

.tarjeta h3 {
  margin: 0 0 0.25rem;
  color: var(--color-primario-oscuro);
  font-size: 1.3rem;
}

.tarjeta .definicion-corta {
  margin: 0.5rem 0 0;
}

.sin-resultados {
  margin-top: 2rem;
  font-size: 1.1rem;
}

/* ---------- Detail view ---------- */

.detalle {
  margin-top: 1.5rem;
  background: var(--color-tarjeta);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 1.5rem 1.75rem 2rem;
}

.detalle .volver {
  display: inline-block;
  margin-bottom: 1rem;
  font-weight: bold;
  text-decoration: none;
}

.detalle-cabecera {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.detalle-imagen {
  width: 110px;
  height: 110px;
  object-fit: contain;
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 0.5rem;
  flex-shrink: 0;
}

.detalle h2 {
  margin: 0;
  font-size: 2.1rem;
  color: var(--color-primario-oscuro);
}

.tema-pill {
  display: inline-block;
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: 999px;
  padding: 0.15rem 0.75rem;
  font-size: 0.9rem;
}

.detalle .tema-pill {
  margin-top: 0.5rem;
}

.detalle-traducciones {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.detalle-traduccion {
  display: inline-block;
  background: var(--color-fondo);
  border: 1px solid var(--color-primario);
  border-radius: 999px;
  padding: 0.15rem 0.75rem;
  font-size: 0.9rem;
  color: var(--color-primario-oscuro);
  text-decoration: none;
}

.detalle-traduccion:hover,
.detalle-traduccion:focus {
  text-decoration: underline;
}

.detalle-navegacion {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 2px dashed var(--color-borde);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.detalle-navegacion-enlace {
  flex: 1 1 0;
  max-width: 48%;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  font-weight: bold;
  text-decoration: none;
  color: var(--color-primario-oscuro);
}

.detalle-navegacion-siguiente {
  text-align: right;
}

a.detalle-navegacion-enlace:hover,
a.detalle-navegacion-enlace:focus {
  border-color: var(--color-primario);
  background: var(--color-fondo);
}

span.detalle-navegacion-enlace {
  visibility: hidden;
}

.detalle .definicion {
  font-size: 1.25rem;
  margin: 0 0 1.25rem;
}

.detalle h3 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-acento);
  margin: 1.4rem 0 0.5rem;
}

.sinonimos-lista {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.sinonimos-lista li {
  background: #eef3f0;
  border: 1px solid var(--color-borde);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
}

.frases {
  border-left: 4px solid var(--color-primario);
  padding-left: 1rem;
  margin: 0;
}
.frases p {
  margin: 0.4rem 0;
  font-size: 1.15rem;
  animation: aparecer 0.5s ease both;
}
.frases p:nth-child(2) { animation-delay: 0.1s; }
.frases p:nth-child(3) { animation-delay: 0.2s; }

@keyframes aparecer {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.detalle-imagen {
  animation: aparecer-imagen 0.35s ease both;
}
@keyframes aparecer-imagen {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}
.frases .destacado {
  font-weight: bold;
  color: var(--color-primario-oscuro);
  text-decoration: underline;
  text-decoration-color: var(--color-acento);
  text-decoration-thickness: 2px;
}
.frases .equivale {
  font-size: 0.95rem;
  color: #4a4a4a;
  margin: 0.3rem 0 0.8rem;
}

/* ---------- Write your own sentence ---------- */

.tu-frase {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 2px dashed var(--color-borde);
}

.tu-frase-label {
  display: block;
  font-weight: bold;
  margin-bottom: 0.4rem;
}

.tu-frase-fila {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: flex-start;
}

.tu-frase-fila textarea {
  flex: 1;
  min-width: 200px;
  font: inherit;
  font-size: 1.1rem;
  padding: 0.6rem 0.8rem;
  border: 2px solid var(--color-borde);
  border-radius: var(--radio);
  background: var(--color-tarjeta);
  color: var(--color-texto);
  resize: vertical;
}

.tu-frase-aviso {
  margin-top: 0.9rem;
  font-size: 1.1rem;
}
.tu-frase-aviso:empty { display: none; }
.tu-frase-aviso .tu-frase-texto {
  color: var(--color-primario-oscuro);
  font-style: italic;
}
.tu-frase-aviso.aparecer-una-vez {
  animation: aparecer 0.4s ease both;
}

/* ---------- Game ---------- */

.juego-aciertos {
  display: inline-block;
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: 999px;
  padding: 0.25rem 0.9rem;
  font-weight: bold;
  color: var(--color-primario-oscuro);
}
.juego-aciertos.acierto-pop {
  animation: acierto-pop 0.4s ease;
}

/* ---------- Game menu ---------- */

.juego-menu {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.juego-menu-opcion {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--color-tarjeta);
  border: 2px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 1.5rem;
  text-decoration: none;
  color: var(--color-texto);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.juego-menu-opcion:hover,
.juego-menu-opcion:focus-visible {
  transform: translateY(-4px);
  border-color: var(--color-primario);
  box-shadow: 0 8px 18px rgba(10, 92, 120, 0.15);
}

.juego-menu-icono {
  font-size: 2.2rem;
  line-height: 1;
}

.juego-menu-titulo {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--color-primario-oscuro);
}

.juego-menu-desc {
  color: #4a4a4a;
}

.juego-pista {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: var(--radio);
  padding: 1.25rem;
  margin: 1rem 0 1.5rem;
}

.juego-pista-imagen {
  width: 100px;
  height: 100px;
  object-fit: contain;
  flex-shrink: 0;
  animation: aparecer-imagen 0.35s ease both;
}

.juego-pista-contenido {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.juego-pista-contenido .tema-pill {
  align-self: flex-start;
}

.juego-pista-texto {
  margin: 0;
  font-size: 1.3rem;
}

.juego-pista-frase {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.juego-pista-frase p {
  margin: 0;
  font-size: 1.3rem;
}
.juego-pista-frase .hueco {
  display: inline-block;
  min-width: 4.5rem;
  border-bottom: 3px solid var(--color-acento);
  color: var(--color-acento);
  font-weight: bold;
  letter-spacing: 2px;
}
.juego-pista-frase .destacado {
  font-weight: bold;
  color: var(--color-primario-oscuro);
  text-decoration: underline;
  text-decoration-color: var(--color-acento);
  text-decoration-thickness: 2px;
}

.juego-opciones {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.juego-opcion {
  font-size: 1.1rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-borde);
  border-radius: var(--radio);
  background: var(--color-tarjeta);
  color: var(--color-texto);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.juego-opcion:hover:not(:disabled) {
  border-color: var(--color-primario);
  transform: translateY(-2px);
}
.juego-opcion:disabled {
  cursor: default;
}
.juego-opcion.correcta {
  background: #dff3e6;
  border-color: #2f9e57;
  color: #1d6b39;
  font-weight: bold;
  animation: acierto-pop 0.35s ease both;
}
.juego-opcion.incorrecta {
  background: #fbe4e4;
  border-color: #c94b4b;
  color: #9a2f2f;
  animation: fallo-shake 0.35s ease both;
}

@keyframes acierto-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.06); }
  100% { transform: scale(1); }
}
@keyframes fallo-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.juego-mensaje {
  min-height: 1.6em;
  font-weight: bold;
  font-size: 1.15rem;
}
.juego-mensaje-correcto { color: #1d6b39; }
.juego-mensaje-incorrecto { color: #9a2f2f; }

/* ---------- Footer ---------- */

.pie {
  margin-top: 2.5rem;
}

.pie-mensaje {
  background: var(--color-primario);
  color: #fff;
}

.pie-mensaje p {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem;
  font-size: 1.35rem;
  font-weight: bold;
}

.pie-creditos {
  max-width: 900px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem 1.5rem;
  color: #9a9a9a;
  font-size: 0.65rem;
}

.pie-creditos a {
  color: #9a9a9a;
}

.pie-proyectos {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.25rem 1.5rem;
  color: #9a9a9a;
  font-size: 0.65rem;
}

.pie-proyectos a {
  color: #9a9a9a;
}

body.alto-contraste .pie-mensaje {
  background: #000;
  border-top: 3px solid #fff;
}
body.alto-contraste .pie-creditos {
  color: #d0d0d0;
}
body.alto-contraste .pie-creditos a {
  color: #ffff00;
}
body.alto-contraste .pie-proyectos {
  color: #d0d0d0;
}
body.alto-contraste .pie-proyectos a {
  color: #ffff00;
}

/* ---------- High contrast ---------- */

body.alto-contraste {
  --color-fondo: #000000;
  --color-texto: #ffffff;
  --color-primario: #000000;
  --color-primario-oscuro: #ffff00;
  --color-tarjeta: #000000;
  --color-borde: #ffffff;
  --color-acento: #ffff00;
  --color-foco: #00e5ff;
}
body.alto-contraste .cabecera {
  border-bottom: 3px solid #ffffff;
}
body.alto-contraste a { color: #ffff00; }
body.alto-contraste .a11y-barra button {
  background: #000;
  border-color: #fff;
}
body.alto-contraste .idioma-btn.activo,
body.alto-contraste .idioma-btn[aria-pressed="true"] {
  background: #ffff00;
  color: #000;
  border-color: #ffff00;
}
body.alto-contraste .filtro-btn.activo,
body.alto-contraste .filtro-btn[aria-pressed="true"] {
  background: #ffff00;
  color: #000;
  border-color: #ffff00;
}
body.alto-contraste .tarjeta,
body.alto-contraste .detalle {
  border-width: 2px;
}
body.alto-contraste .sinonimos-lista li {
  background: #000;
  color: #fff;
}
body.alto-contraste .frases .destacado {
  color: #ffff00;
}
body.alto-contraste .hero-palabra {
  background: #000;
  border: 2px solid #ffff00;
}
body.alto-contraste .hero-progreso {
  border-width: 2px;
}
body.alto-contraste .boton-cta {
  background: #ffff00;
  color: #000;
  box-shadow: none;
}
body.alto-contraste .barra-progreso-relleno {
  background: #ffff00;
}
body.alto-contraste .tarjeta-aprendida {
  background: #ffff00;
  color: #000;
}
body.alto-contraste .juego-opcion.correcta {
  background: #000;
  border-color: #ffff00;
  color: #ffff00;
}
body.alto-contraste .juego-opcion.incorrecta {
  background: #000;
  border-color: #fff;
  color: #fff;
}
body.alto-contraste .juego-mensaje-correcto,
body.alto-contraste .juego-mensaje-incorrecto,
body.alto-contraste .juego-aciertos,
body.alto-contraste .tu-frase-aviso .tu-frase-texto {
  color: #ffff00;
}
body.alto-contraste .juego-menu-opcion {
  border-width: 2px;
}
body.alto-contraste .juego-menu-opcion:hover,
body.alto-contraste .juego-menu-opcion:focus-visible {
  border-color: #ffff00;
}
body.alto-contraste .juego-pista-frase .hueco,
body.alto-contraste .juego-pista-frase .destacado {
  color: #ffff00;
  border-color: #ffff00;
  text-decoration-color: #ffff00;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  /* Stack the search input above the two buttons so the field is always
     visible on phones (was being squeezed out at 375px by the buttons'
     intrinsic width). */
  .buscador-fila {
    flex-wrap: wrap;
  }
  .buscador-fila #buscar {
    flex-basis: 100%;
  }
}

@media (max-width: 480px) {
  .cabecera h1 { font-size: 1.5rem; }
  .detalle h2 { font-size: 1.7rem; }
  .detalle { padding: 1.1rem 1.1rem 1.5rem; }
}

/* ==========================================================================
 * Pages: /about/ (about/index.html, about/privacidad.html) and 404.html.
 *
 * These pages were originally served with their own <style> blocks. They
 * have been moved here so they satisfy the strict `style-src-elem 'self'`
 * CSP set in _headers (an inline <style> block in <head> would be blocked
 * in production).
 *
 * All selectors are scoped to a wrapper class on <body>:
 *   .page-about       — about/index.html (project presentation)
 *   .page-privacidad  — about/privacidad.html (privacy policy)
 *   .page-404         — 404.html (Cloudflare Pages not-found response)
 *
 * Layout is the same on both /about/ pages (hero header with language
 * picker + sections in cards + footer with back-to-dict buttons);
 * privacidad only differs in narrower max-width and a few list-style
 * tweaks. Single .envoltorio + shared .cabecera / .btn / .idioma-btn
 * / .pie-about / .pie-nota / .pie-nota rules cover both.
 * ========================================================================== */

.page-about,
.page-privacidad,
.page-404 {
  --color-fondo: #fbfaf7;
  --color-texto: #202020;
  --color-primario: #0a5c78;
  --color-primario-oscuro: #073f52;
  --color-tarjeta: #ffffff;
  --color-borde: #d8d3c8;
  --color-acento: #b45309;
  --color-foco: #d6001c;
  --acento-tramites: #0a5c78;
  --acento-salud: #b4304a;
  --acento-vida-diaria: #b45309;
  --acento-finanzas: #2f7a4d;
  --acento-vivienda: #6b4a91;
  --acento-trabajo: #3b5b8c;
  --acento-legal: #6b5b3e;
  margin: 0;
  background: var(--color-fondo);
  color: var(--color-texto);
  font-family: "Atkinson Hyperlegible", "Segoe UI", Verdana, Arial, sans-serif;
  line-height: 1.6;
}
.page-about a,
.page-privacidad a,
.page-404 a { color: var(--color-primario-oscuro); }
.page-about :focus-visible,
.page-privacidad :focus-visible,
.page-404 :focus-visible { outline: 3px solid var(--color-foco); outline-offset: 2px; }
.page-about html,
.page-privacidad html,
.page-404 html { scroll-behavior: smooth; }

.page-about .envoltorio { max-width: 900px; }
.page-privacidad .envoltorio { max-width: 760px; }
.page-about .envoltorio,
.page-privacidad .envoltorio { margin: 0 auto; padding: 0 1.25rem 4rem; }

/* --- 404.html: the "page not found" landing (see also 404.html). --- */
.page-404 .error-404 {
  max-width: 640px;
  margin: 2.5rem auto;
  padding: 2rem 1.25rem 3rem;
  text-align: center;
}
.page-404 .error-404-codigo {
  font-size: 5rem;
  font-weight: 700;
  line-height: 1;
  margin: 0 0 0.5rem;
  color: var(--color-primario);
  letter-spacing: 0.02em;
}
.page-404 .error-404-encabezado {
  font-size: 1.6rem;
  margin: 0 0 0.75rem;
  color: var(--color-texto);
}
.page-404 .error-404-descripcion {
  margin: 0 auto 1.5rem;
  max-width: 32rem;
  color: var(--color-texto);
}
.page-404 .error-404-sugerencia {
  margin: 0 0 1.25rem;
  font-weight: 600;
  color: var(--color-primario-oscuro);
}
.page-404 .error-404-acciones {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}
.page-404 .error-404-acciones .boton-cta { min-width: 12rem; }
@media (max-width: 480px) {
  .page-404 .error-404-codigo { font-size: 3.75rem; }
  .page-404 .error-404-encabezado { font-size: 1.35rem; }
  .page-404 .error-404-acciones .boton-cta { width: 100%; }
}

.page-about header.cabecera,
.page-privacidad header.cabecera {
  background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-primario-oscuro) 100%);
  color: #fff;
  text-align: center;
}
.page-about header.cabecera { padding: 2.5rem 1.25rem 2rem; }
.page-privacidad header.cabecera { padding: 2rem 1.25rem 1.75rem; }
.page-about header.cabecera .envoltorio,
.page-privacidad header.cabecera .envoltorio { padding: 0 1.25rem; }

.page-about .idioma-selector { margin-bottom: 1.5rem; }
.page-privacidad .idioma-selector { margin-bottom: 1.25rem; }
.page-about .idioma-btn,
.page-privacidad .idioma-btn {
  font: inherit;
  font-weight: 700;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: transparent;
  color: #fff;
  cursor: pointer;
}
.page-about .idioma-btn[aria-pressed="true"],
.page-privacidad .idioma-btn[aria-pressed="true"] {
  background: #fff;
  color: var(--color-primario-oscuro);
  border-color: #fff;
}
.page-about .idioma-btn + .idioma-btn,
.page-privacidad .idioma-btn + .idioma-btn { margin-left: 0.5rem; }
.page-about .aviso-ruta {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  max-width: 32rem;
  margin: 0 auto 1.5rem;
}
.page-about .logo-about { font-size: 3rem; line-height: 1; margin-bottom: 0.25rem; }
.page-privacidad .logo-about { font-size: 2.5rem; line-height: 1; margin-bottom: 0.25rem; }
.page-about header.cabecera h1 { margin: 0 0 0.25rem; font-size: 2.2rem; }
.page-privacidad header.cabecera h1 { margin: 0 0 0.25rem; font-size: 1.9rem; }
.page-about header.cabecera h1 span,
.page-privacidad header.cabecera h1 span { color: #ffd7a8; }
.page-about .lema { margin: 0 0 1rem; font-size: 1.1rem; opacity: 0.92; }
.page-privacidad .lema { margin: 0; font-size: 1rem; opacity: 0.92; }
.page-about .entradilla { max-width: 40rem; margin: 0 auto 1.75rem; font-size: 1.05rem; }

.page-about nav.indice,
.page-privacidad nav.indice {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  font-size: 0.95rem;
}
.page-about nav.indice { margin-top: 0; }
.page-privacidad nav.indice { margin-top: 1.25rem; }
.page-about nav.indice a,
.page-privacidad nav.indice a {
  color: #fff;
  text-decoration: none;
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  padding-bottom: 2px;
}
.page-about nav.indice a:hover,
.page-about nav.indice a:focus-visible,
.page-privacidad nav.indice a:hover,
.page-privacidad nav.indice a:focus-visible { border-color: #ffd7a8; }

.page-about main section {
  background: var(--color-tarjeta);
  border: 1px solid var(--color-borde);
  border-radius: 12px;
  padding: 1.75rem 1.75rem;
  margin: 2rem 0;
  scroll-margin-top: 1rem;
}
.page-privacidad main section {
  background: var(--color-tarjeta);
  border: 1px solid var(--color-borde);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin: 1.5rem 0;
  scroll-margin-top: 1rem;
}
.page-about main h2,
.page-privacidad main h2 {
  color: var(--color-primario-oscuro);
  margin-top: 0;
  border-bottom: 2px solid var(--color-borde);
  padding-bottom: 0.5rem;
}
.page-about main h2 { font-size: 1.4rem; }
.page-privacidad main h2 { font-size: 1.25rem; }
.page-about main h3 { margin-top: 0; }
.page-privacidad main h3 { margin-top: 0; font-size: 1.05rem; }
.page-privacidad main p,
.page-privacidad main li { font-size: 1rem; }
.page-privacidad main ul { padding-left: 1.25rem; }
.page-privacidad main li { margin-bottom: 0.5rem; }

.page-about .grid-principios,
.page-about .grid-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}
.page-about .principio,
.page-about .area {
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-left: 5px solid var(--acento, var(--color-primario));
  border-radius: 10px;
  padding: 1rem 1.1rem;
}
.page-about .principio h3,
.page-about .area h3 {
  font-size: 1.05rem;
  color: var(--color-primario-oscuro);
}
.page-about .principio p,
.page-about .area p { margin-bottom: 0; font-size: 0.95rem; }
.page-about .area-cifra {
  font-weight: 700;
  color: var(--acento, var(--color-acento));
  margin-top: 0.4rem !important;
}
.page-about .cifras {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  margin: 0 0 1.5rem;
}
.page-about .cifra {
  text-align: center;
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: 10px;
  padding: 1rem 0.5rem;
}
.page-about .cifra strong { display: block; font-size: 1.8rem; color: var(--color-acento); }
.page-about .cifra span { font-size: 0.9rem; }
.page-about .lista-colaborar li { margin-bottom: 0.75rem; }

.page-privacidad .resumen {
  background: #fdf6e7;
  border: 1px solid #e8d8a8;
  border-left: 5px solid var(--color-acento);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
  font-size: 1.05rem;
}
.page-privacidad .lista-datos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}
.page-privacidad .dato {
  background: var(--color-fondo);
  border: 1px solid var(--color-borde);
  border-radius: 10px;
  padding: 0.85rem 1rem;
}
.page-privacidad .dato strong { color: var(--color-primario-oscuro); }

.page-about footer.pie-about,
.page-privacidad footer.pie-about {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem 0;
}
.page-about .btn,
.page-privacidad .btn,
.page-about .boton-cta,
.page-privacidad .boton-cta {
  display: inline-block;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  border: 2px solid var(--color-primario);
  color: var(--color-primario-oscuro);
  background: var(--color-tarjeta);
}
.page-about .btn:hover,
.page-about .btn:focus-visible,
.page-privacidad .btn:hover,
.page-privacidad .btn:focus-visible { background: var(--color-primario); color: #fff; }
.page-about .pie-nota,
.page-privacidad .pie-nota {
  text-align: center;
  font-size: 0.85rem;
  color: #666;
  padding: 1.5rem 1.25rem 0;
}

/* `[data-lang-block]` driven visibility: scoped to /about/ pages only so
 * we don't accidentally hide anything elsewhere if a future page reuses
 * the attribute.
 */
.page-about [data-lang-block],
.page-privacidad [data-lang-block] { display: none; }
.page-about html[data-lang="es"] [data-lang-block="es"],
.page-privacidad html[data-lang="es"] [data-lang-block="es"] { display: block; }
.page-about html[data-lang="en"] [data-lang-block="en"],
.page-privacidad html[data-lang="en"] [data-lang-block="en"] { display: block; }
.page-about html[data-lang="es"] span[data-lang-block="es"],
.page-about html[data-lang="en"] span[data-lang-block="en"],
.page-privacidad html[data-lang="es"] span[data-lang-block="es"],
.page-privacidad html[data-lang="en"] span[data-lang-block="en"] { display: inline; }

/* 404.html — the page is small enough that almost everything lives in
 * the markup. Keep just the layout helpers here.
 */
.page-404 { text-align: center; }
.page-404 .error-404 { padding: 4rem 1rem; }
.page-404 .error-404 h1 { font-size: 5rem; margin: 0; }
.page-404 .error-404 .boton-cta { margin-top: 1rem; }

@media print {
  .page-about header.cabecera,
  .page-privacidad header.cabecera { background: none; color: var(--color-texto); }
  .page-about header.cabecera h1 span,
  .page-privacidad header.cabecera h1 span { color: var(--color-acento); }
  .page-about .idioma-selector,
  .page-privacidad .idioma-selector,
  .page-about .aviso-ruta,
  .page-about nav.indice,
  .page-privacidad nav.indice,
  .page-about footer.pie-about,
  .page-privacidad footer.pie-about { display: none; }
  .page-about main section,
  .page-privacidad main section { break-inside: avoid; border: none; padding: 0; }
}

@media (prefers-color-scheme: dark) {
  .page-about,
  .page-privacidad,
  .page-404 {
    --color-fondo: #17191b;
    --color-texto: #ececec;
    --color-tarjeta: #22262a;
    --color-borde: #3a3f43;
  }
  .page-about .principio,
  .page-about .area,
  .page-about .cifra,
  .page-privacidad .dato { background: #1b1e21; }
  .page-privacidad .resumen { background: #2b2618; border-color: #5a4a22; }
  .page-about .btn,
  .page-privacidad .btn,
  .page-about .boton-cta,
  .page-privacidad .boton-cta { background: #1b1e21; }
}