/* djc-core-reto (v1): retos y tests del banco de preguntas (ver docs/preguntas.md) */

/*
 * Solo colores de marca (variable.css) y sus tonalidades: el acento con
 * distintas opacidades, los fondos y los grises del texto. Nada de verdes ni
 * rojos: el acierto es el acento y el error es el gris del texto.
 */
.djc-core-reto {
  --djc-core-reto-acento-08: rgba(229, 247, 116, 0.08);
  --djc-core-reto-acento-16: rgba(229, 247, 116, 0.16);
  --djc-core-reto-acento-24: rgba(229, 247, 116, 0.24);
  --djc-core-reto-acento-50: rgba(229, 247, 116, 0.5);
  --djc-core-reto-ok: var(--color-accent);
  --djc-core-reto-mal: var(--color-text-muted);
  --djc-core-reto-borde: rgba(229, 247, 116, 0.25); /* bordes de adentro: tono suave del acento */
  margin: 16px 0;
  padding: 18px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);            /* el cuadro: color de marca, como djc-core-card */
  border-radius: 12px;
  font-size: 16px;
  line-height: 1.5;
}

.djc-core-reto [hidden] { display: none !important; }

/* Los botones de djc-english-voz traen su propio estilo */
.djc-core-reto :where(button:not(.djc-english-voz-btn)) {
  font: inherit;
  color: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.djc-core-reto button:disabled { cursor: default; }

.djc-core-reto button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Fichas de estado: XP, nivel, racha, estrellas */
.djc-core-reto-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 16px;
}

.djc-core-reto-chip {
  padding: 4px 12px;
  border: 1px solid var(--djc-core-reto-borde);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.djc-core-reto-chip strong { color: var(--color-text); }

.djc-core-reto-titulo {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 20px;
}

.djc-core-reto-sub {
  margin: 4px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* Botones principales */
/* Botón principal: tono suave del acento, borde y texto en acento */
.djc-core-reto button.djc-core-reto-btn {
  display: inline-block;
  padding: 12px 22px;
  border: 1px solid var(--djc-core-reto-acento-50);
  border-radius: 10px;
  background: var(--djc-core-reto-acento-16);
  color: var(--color-accent);
  font-weight: 600;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.djc-core-reto button.djc-core-reto-btn:hover:not(:disabled) {
  background: var(--djc-core-reto-acento-24);
  border-color: var(--color-accent);
}

.djc-core-reto button.djc-core-reto-btn:disabled {
  border-color: var(--djc-core-reto-borde);
  background: transparent;
  color: var(--color-text-muted);
}

.djc-core-reto-btn-sec {
  display: inline-block;
  padding: 11px 18px;
  border: 1px solid var(--djc-core-reto-borde);
  border-radius: 10px;
  background: transparent;
}

.djc-core-reto-acciones {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 18px;
}

/* Barra de progreso */
.djc-core-reto-barra {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.djc-core-reto-barra-fondo {
  flex: 1;
  height: 10px;
  background: var(--color-surface);
  border-radius: 999px;
  overflow: hidden;
}

.djc-core-reto-barra-relleno {
  height: 100%;
  width: 0;
  background: var(--color-accent);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.djc-core-reto .djc-core-reto-cerrar {
  padding: 2px 8px;
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 22px;
  line-height: 1;
}

/* Enunciado */
.djc-core-reto-tipo {
  margin: 0 0 6px;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.djc-core-reto-pregunta {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 600;
}

.djc-core-reto-frase {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 600;
}

.djc-core-reto-frase .djc-english-voz-btn { font-weight: 400; }

/* Opciones */
.djc-core-reto-opciones {
  display: grid;
  gap: 10px;
}

.djc-core-reto-opcion {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--djc-core-reto-borde);
  border-radius: 10px;
  background: var(--color-surface);
  text-align: left;
}

.djc-core-reto-opcion.djc-core-reto-elegida {
  border-color: var(--color-accent);
  background: var(--djc-core-reto-acento-08);
}

/* Al comprobar: la correcta en acento con ✓, la elegida por error en gris con ✕ */
.djc-core-reto-opcion.djc-core-reto-ok {
  border-color: var(--djc-core-reto-ok);
  background: var(--djc-core-reto-acento-16);
}

.djc-core-reto-opcion.djc-core-reto-mal {
  border-color: var(--djc-core-reto-mal);
  border-style: dashed;
  color: var(--color-text-muted);
}

.djc-core-reto-opcion.djc-core-reto-ok::after,
.djc-core-reto-opcion.djc-core-reto-mal::after {
  float: right;
  margin-left: 8px;
  font-weight: 700;
}

.djc-core-reto-opcion.djc-core-reto-ok::after { content: "✓"; color: var(--color-accent); }
.djc-core-reto-opcion.djc-core-reto-mal::after { content: "✕"; }

.djc-core-reto-opcion:disabled { cursor: default; }

/* Ordenar palabras */
.djc-core-reto-linea {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 50px;
  padding: 8px 0;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--djc-core-reto-borde);
}

.djc-core-reto-linea.djc-core-reto-ok { border-bottom-color: var(--djc-core-reto-ok); }
.djc-core-reto-linea.djc-core-reto-mal { border-bottom-color: var(--djc-core-reto-mal); }

.djc-core-reto-banco {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.djc-core-reto-ficha {
  padding: 8px 14px;
  border: 2px solid var(--djc-core-reto-borde);
  border-radius: 10px;
  background: var(--color-surface);
}

.djc-core-reto-ficha.djc-core-reto-usada { visibility: hidden; }

/* Hablar */
.djc-core-reto-mic {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: 2px solid var(--color-accent);
  border-radius: 999px;
  background: transparent;
}

.djc-core-reto .djc-core-reto-mic.djc-core-reto-escuchando {
  background: var(--djc-core-reto-acento-24);
  color: var(--color-accent);
}

.djc-core-reto-oido {
  margin: 12px 0 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

.djc-core-reto .djc-core-reto-saltar {
  border: 0;
  background: transparent;
  color: var(--color-text-muted);
  text-decoration: underline;
  font-size: 14px;
}

/* Respuesta */
.djc-core-reto-respuesta {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  border-left: 4px solid var(--djc-core-reto-ok);
  background: var(--color-surface);
}

.djc-core-reto-respuesta.djc-core-reto-respuesta-mal { border-left-color: var(--djc-core-reto-mal); }

.djc-core-reto-respuesta p { margin: 0; }
.djc-core-reto-respuesta p + p { margin-top: 6px; }

.djc-core-reto-respuesta-titulo {
  font-weight: 700;
  color: var(--djc-core-reto-ok);
}

.djc-core-reto-respuesta-mal .djc-core-reto-respuesta-titulo { color: var(--color-text); }

/* Final */
.djc-core-reto-final { text-align: center; }

.djc-core-reto-estrellas {
  margin: 8px 0;
  font-size: 44px;
  letter-spacing: 6px;
}

.djc-core-reto-estrella-apagada { opacity: 0.2; filter: grayscale(1); }

.djc-core-reto-final .djc-core-reto-chips,
.djc-core-reto-final .djc-core-reto-acciones { justify-content: center; }

.djc-core-reto-aviso {
  margin-top: 10px;
  color: var(--color-text-muted);
  font-size: 13px;
}

@media (prefers-reduced-motion: reduce) {
  .djc-core-reto-barra-relleno { transition: none; }
}

/* Varias correctas: casilla delante del texto */
.djc-core-reto-opcion {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.djc-core-reto-opcion-texto { flex: 1; }

.djc-core-reto-casilla {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 2px solid var(--djc-core-reto-borde);
  border-radius: 5px;
}

.djc-core-reto-elegida .djc-core-reto-casilla {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: inset 0 0 0 3px var(--color-surface);
}

/* Al revisar, la marca va al final: ✓ acertaste, ⚠ te faltó, ✕ no era */
.djc-core-reto-opcion.djc-core-reto-ok::after,
.djc-core-reto-opcion.djc-core-reto-mal::after,
.djc-core-reto-opcion.djc-core-reto-falto::after {
  float: none;
  flex: none;
}

.djc-core-reto-opcion.djc-core-reto-falto {
  border-color: var(--djc-core-reto-acento-50);
  border-style: dashed;
}

.djc-core-reto-opcion.djc-core-reto-falto::after {
  content: "⚠";
  margin-left: 8px;
  color: var(--color-accent);
  font-weight: 700;
}

/* Notas por opción en la respuesta */
.djc-core-reto-nota { font-size: 15px; }

.djc-core-reto-nota-marca {
  display: inline-block;
  min-width: 1.2em;
  font-weight: 700;
}

.djc-core-reto-nota-ok,
.djc-core-reto-nota-falto { color: var(--color-accent); }

.djc-core-reto-nota-mal { color: var(--color-text-muted); }

/* Un comando o un log en la pregunta */
.djc-core-reto pre.djc-core-reto-codigo {
  margin: 0 0 16px;
  padding: 12px 14px;
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--djc-core-reto-borde);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.5;
}

/* Enlace para repasar la sección del tutorial */
.djc-core-reto .djc-core-reto-repasa {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 15px;
}

.djc-core-reto .djc-core-reto-repasa:hover { text-decoration: underline; }

/* Modos del test de categoría */
.djc-core-reto-modos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 4px;
}

.djc-core-reto .djc-core-reto-modo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border: 1px solid var(--djc-core-reto-acento-50);
  border-radius: 10px;
  background: var(--djc-core-reto-acento-08);
  text-align: left;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.djc-core-reto .djc-core-reto-modo:hover:not(:disabled) {
  background: var(--djc-core-reto-acento-16);
  border-color: var(--color-accent);
}

.djc-core-reto .djc-core-reto-modo:disabled {
  border-color: var(--djc-core-reto-borde);
  background: transparent;
  opacity: 0.5;
}

.djc-core-reto-modo-nombre {
  color: var(--color-accent);
  font-weight: 600;
}

.djc-core-reto-modo:disabled .djc-core-reto-modo-nombre { color: var(--color-text-muted); }

.djc-core-reto-modo-sub {
  color: var(--color-text-muted);
  font-size: 13px;
}

/* De qué tutorial viene la pregunta (test de categoría y repaso) */
.djc-core-reto-origen {
  margin: 0 0 8px;
  color: var(--color-text-muted);
  font-size: 13px;
}

/* ---------- Pantalla completa ---------- */

html.djc-core-reto-abierto,
html.djc-core-reto-abierto body { overflow: hidden; }

.djc-core-reto.djc-core-reto-modal {
  position: fixed;
  inset: 0;
  z-index: 2147483647;
  display: flex;
  justify-content: center;
  height: 100vh;
  height: 100dvh;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-base);
}

.djc-core-reto-marco {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 680px;
  height: 100%;
}

.djc-core-reto-cabeza {
  flex: none;
  padding: 12px 16px 8px;
  padding-top: max(12px, env(safe-area-inset-top));
}

.djc-core-reto-cabeza .djc-core-reto-barra { margin-bottom: 0; }

.djc-core-reto-contenido {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px 16px 24px;
  -webkit-overflow-scrolling: touch;
}

.djc-core-reto-pie {
  flex: none;
  padding: 12px 16px;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--djc-core-reto-borde);
  background: var(--color-bg);
}

.djc-core-reto-pie:empty { display: none; }

.djc-core-reto-pie .djc-core-reto-acciones {
  margin-top: 0;
  justify-content: flex-end;
}

/* En el celular, el botón principal ocupa el ancho, a mano del pulgar */
@media (max-width: 600px) {
  .djc-core-reto-pie .djc-core-reto-acciones { flex-direction: column-reverse; align-items: stretch; }
  .djc-core-reto-pie .djc-core-reto-acciones > button { width: 100%; text-align: center; }
}

.djc-core-reto-confirmar p {
  margin: 0 0 10px;
  font-weight: 600;
}

.djc-core-reto-modal .djc-core-reto-final { padding-top: 12px; }

/* Opciones que son código o la salida de un programa */
.djc-core-reto pre.djc-core-reto-opcion-codigo {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 14px;
  line-height: 1.35;
  white-space: pre;
  overflow-x: auto;
}