.curso-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.curso-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--border);
  z-index: 50;
}

.curso-progress-fill {
  height: 100%;
  background: var(--navy);
  width: 0%;
  transition: width 0.3s var(--ease);
}

.btn-back {
  position: fixed;
  top: 18px;
  left: 18px;
  z-index: 40;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-weight: 600;
  font-size: var(--t-sm);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s var(--ease);
}

.btn-back:hover {
  border-color: var(--border-strong);
}

.curso-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 84px 24px 116px;
  overflow: hidden;
}

.curso-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 24px;
  background: linear-gradient(to top, var(--bg) 65%, transparent);
  display: flex;
  justify-content: center;
  gap: 12px;
  z-index: 40;
}

.btn-previous {
  flex-shrink: 0;
  background: var(--white);
  color: var(--navy);
  border: 1px solid var(--border-strong);
  font-weight: 700;
  font-size: var(--t-md);
  padding: 16px 16px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 0 0 var(--border-strong);
  transition: background 0.15s var(--ease), transform 0.1s var(--ease), box-shadow 0.1s var(--ease);
}

.btn-previous:hover {
  background: var(--ice);
}

.btn-previous:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 0 var(--border-strong);
}

.curso-footer .btn-continue {
  flex: 1;
}

.btn-continue {
  width: 100%;
  max-width: 500px;
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
  font-size: var(--t-lg);
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 24px rgba(30, 81, 117, 0.22);
  transition: background 0.15s var(--ease), opacity 0.15s var(--ease), transform 0.15s var(--ease);
}

.btn-continue:hover:not(:disabled) {
  background: var(--navy-light);
}

.btn-continue:active:not(:disabled) {
  transform: scale(0.99);
}

.btn-continue.disabled,
.btn-continue:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

/* ── Slide animations ── */
.slide-out-left {
  animation: slideOutLeft 0.3s var(--ease) forwards;
}

.slide-in-right {
  animation: slideInRight 0.3s var(--ease) forwards;
}

@keyframes slideOutLeft {
  to {
    transform: translateX(-100%);
    opacity: 0;
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.slide-out-right {
  animation: slideOutRight 0.3s var(--ease) forwards;
}

.slide-in-left {
  animation: slideInLeft 0.3s var(--ease) forwards;
}

@keyframes slideOutRight {
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ── Blocks ── */
.block {
  width: 100%;
  max-width: 540px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.block-hook {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  text-align: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.block-hook::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 0%, rgba(255, 255, 255, 0.14), transparent 60%);
  pointer-events: none;
}

.block-hook .block-emoji {
  font-size: 52px;
}

.block-hook h1 {
  font-size: var(--t-2xl);
  font-weight: 800;
  letter-spacing: -0.4px;
}

.block-hook p {
  color: var(--ice);
  font-size: var(--t-md);
  line-height: 1.5;
}

.block-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.block-label {
  font-size: var(--t-2xs);
  font-weight: 800;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.block-concept,
.block-warning,
.block-tip,
.block-example {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
}

.block-concept .block-label {
  color: var(--navy);
}

.block-warning {
  background: var(--warning-bg);
  border-color: rgba(200, 114, 10, 0.25);
}

.block-warning .block-label {
  color: var(--warning);
}

.block-tip {
  background: var(--ice);
  border-color: var(--ice-dark);
}

.block-tip .block-label {
  color: var(--navy);
}

.block-example {
  background: var(--success-bg);
  border-color: rgba(13, 158, 110, 0.22);
}

.block-example .block-label {
  color: var(--success);
}

.block-image {
  width: 100%;
  border-radius: var(--radius-md);
  margin: 4px 0;
}

.block h2 {
  font-size: var(--t-xl);
  font-weight: 800;
  letter-spacing: -0.3px;
}

.block-body {
  font-size: var(--t-md);
  line-height: 1.62;
  color: var(--text-mid);
}


/* ── Quiz ── */
.block-quiz {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
}

.quiz-header .block-label {
  color: var(--navy);
}

.block-question {
  font-size: var(--t-xl);
  font-weight: 800;
  margin: 4px 0 4px;
  letter-spacing: -0.3px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quiz-option {
  text-align: left;
  padding: 16px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--t-md);
  font-weight: 600;
  background: var(--white);
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--navy);
  background: var(--ice);
}

.quiz-option:disabled {
  cursor: not-allowed;
}

.quiz-option.correct {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
}

.quiz-option.incorrect {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
}

.quiz-explanation {
  font-size: var(--t-sm);
  color: var(--text-mid);
  background: var(--bg);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

.quiz-explanation.hidden {
  display: none;
}

/* ── Verdadero / Falso ── */
.tf-options {
  display: flex;
  gap: 12px;
}

.tf-option {
  flex: 1;
  text-align: center;
  padding: 16px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--t-md);
  font-weight: 700;
  background: var(--white);
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.tf-option:hover:not(:disabled) {
  border-color: var(--navy);
  background: var(--ice);
}

.tf-option:disabled {
  cursor: not-allowed;
}

.tf-option.correct {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
}

.tf-option.incorrect {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
}

/* ── Rellenar hueco ── */
.fillblank-sentence {
  font-size: var(--t-lg);
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.fillblank-slot {
  display: inline-block;
  min-width: 70px;
  text-align: center;
  color: var(--navy);
  font-weight: 800;
  border-bottom: 2.5px solid var(--navy);
  padding: 0 4px;
}

.fillblank-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.fillblank-option {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: var(--t-md);
  font-weight: 700;
  background: var(--white);
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.fillblank-option:hover:not(:disabled) {
  border-color: var(--navy);
  background: var(--ice);
}

.fillblank-option:disabled {
  cursor: not-allowed;
}

.fillblank-option.correct {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
}

.fillblank-option.incorrect {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
}

/* ── Relacionar parejas ── */
.match-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.match-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.match-item {
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--t-sm);
  font-weight: 600;
  background: var(--white);
  text-align: center;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease), transform 0.15s var(--ease);
}

.match-item:hover:not(.matched) {
  border-color: var(--navy);
}

.match-item.selected {
  border-color: var(--navy);
  background: var(--ice);
}

.match-item.matched {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
  cursor: default;
}

/* Un botón de respuesta que aún tiene términos por recibir (dos parejas
   con la misma respuesta) NO se apaga al primer acierto: daría un
   destello verde y se queda disponible para el siguiente. Sin esto, la
   pareja acertada no se vería por ninguna parte y parecería que no ha
   pasado nada. */
.match-item.acierto {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
}

.match-item.wrong {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
  animation: shake 0.3s var(--ease);
}

/* ── Ordenar pasos ── */
.order-answer {
  min-height: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--bg);
}

.order-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.order-chip {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: var(--t-sm);
  font-weight: 700;
  background: var(--white);
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.order-chip:hover {
  border-color: var(--navy);
  background: var(--ice);
}

.order-chip.placed {
  border-color: var(--navy);
  background: var(--navy);
  color: var(--white);
}

.order-feedback {
  font-size: var(--t-sm);
  color: var(--danger);
  font-weight: 600;
}

/* ── Checklist ── */
.block-checklist {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--t-md);
  font-weight: 600;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.checklist-item .checkbox {
  width: 21px;
  height: 21px;
  border-radius: 6px;
  border: 2px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease);
}

.checklist-item.checked {
  border-color: var(--success);
  background: var(--success-bg);
}

.checklist-item.checked .checkbox {
  background: var(--success);
  border-color: var(--success);
  color: var(--white);
}

.checklist-item.checked .checkbox::after {
  content: '✓';
  font-size: var(--t-xs);
  font-weight: 800;
}

/* ── Reward ── */
.block-reward {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  text-align: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.block-reward::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 0%, rgba(255, 255, 255, 0.14), transparent 60%);
  pointer-events: none;
}

.reward-trophy {
  display: flex;
  justify-content: center;
}

.block-reward h2 {
  font-size: var(--t-2xl);
  font-weight: 800;
  letter-spacing: -0.3px;
}

.xp-display {
  font-size: var(--t-3xl);
  font-weight: 800;
  color: var(--ice);
  letter-spacing: -0.5px;
}

/* Aviso de que el progreso no se ha podido guardar. Va sobre el fondo
   --navy de la recompensa, así que los colores son literales y no tokens
   que cambian con el tema (var(--white) aquí sería casi negro en oscuro). */
.reward-save-warning {
  font-size: var(--t-sm);
  line-height: 1.45;
  color: #ffd9a8;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 217, 168, 0.35);
  border-radius: var(--radius-sm);
  padding: 12px 12px;
  margin: 4px 0 0;
}

.reward-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  margin-top: 8px;
}

.block-reward .btn-primary {
  background: var(--white);
  color: var(--navy);
  box-shadow: 0 4px 0 0 var(--ice-dark);
}

.block-reward .btn-primary:hover {
  background: var(--ice);
}

.block-reward .btn-primary:active {
  box-shadow: 0 0 0 0 var(--ice-dark);
}

.block-reward .btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 0 0 rgba(255, 255, 255, 0.18);
}

.block-reward .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.block-reward .btn-secondary:active {
  box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.18);
}

/* ══════════════════════════════════════════════════════════════
   El juego
   ══════════════════════════════════════════════════════════════
   Un curso no se aprueba, se JUEGA. Todo lo de aquí abajo existe
   para que acertar y fallar se sientan distinto: el marcador que
   sube, la racha que se ve venir, y la medalla al final. */

/* ── El marcador ── */
.curso-hud {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 16px 8px 12px;
  box-shadow: var(--shadow-sm);
  font-size: var(--t-sm);
  font-weight: 700;
  color: var(--text-mid);
}

.hud-puntos strong {
  font-size: var(--t-lg);
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

/* La racha solo aparece cuando ya hay racha: un contador a cero
   ocupando sitio todo el rato no dice nada. */
.hud-racha {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--ice);
  color: var(--navy);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  font-size: var(--t-xs);
}

.hud-racha-fuerte {
  background: var(--warning-bg);
  color: var(--warning);
}

.hud-racha b {
  font-weight: 800;
}

/* El "+20" que sale volando del marcador al acertar. */
.hud-suma {
  position: absolute;
  right: 14px;
  top: 50%;
  font-weight: 800;
  font-size: var(--t-lg);
  color: var(--success);
  pointer-events: none;
  animation: hud-suma-sube 0.9s var(--ease) forwards;
}

@keyframes hud-suma-sube {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-34px); }
}

.hud-late {
  animation: hud-latido 0.35s var(--ease);
}

@keyframes hud-latido {
  50% { transform: scale(1.28); }
}

/* Nadie con `prefers-reduced-motion` quiere números saltando. */
@media (prefers-reduced-motion: reduce) {
  .hud-suma, .hud-late { animation: none; }
  .hud-suma { opacity: 0; }
}

/* ── Lo que vale la pregunta ── */
.quiz-header {
  justify-content: space-between;
}

.block-vale {
  font-size: var(--t-xs);
  font-weight: 800;
  color: var(--text-dim);
  background: var(--bg);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  white-space: nowrap;
}

.block-vale-fuerte {
  color: var(--warning);
  background: var(--warning-bg);
}

.block-vale-repesca {
  color: var(--indigo);
  background: var(--indigo-bg);
}

/* Un borde de color al responder: el resultado se ve antes de leer
   nada. */
.block-acertado { border-color: var(--success); }
.block-fallado { border-color: var(--danger); }

/* ── La pantalla final ── */
.reward-medalla {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.1);
}

.reward-medalla strong {
  font-size: var(--t-xl);
  font-weight: 800;
}

.reward-medalla small {
  font-size: var(--t-xs);
  color: var(--ice);
  opacity: 0.85;
}

.reward-medalla-icono {
  display: flex;
}

.reward-medalla-oro .reward-medalla-icono { color: #f0cf7c; }
.reward-medalla-plata .reward-medalla-icono { color: #d3dee3; }
.reward-medalla-bronce .reward-medalla-icono { color: #e6c6a4; }
.reward-medalla-ninguna .reward-medalla-icono { color: var(--ice); opacity: 0.7; }

.reward-desglose {
  list-style: none;
  width: 100%;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: var(--t-sm);
}

.reward-desglose li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--ice);
}

.reward-desglose strong {
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.reward-bonus strong {
  color: #f0cf7c;
}

.reward-record {
  font-size: var(--t-sm);
  color: var(--ice);
  min-height: 1em;
}

.reward-record-nuevo {
  color: #f0cf7c;
  font-weight: 700;
}

/* El salto de puestos en la liga de la semana: dorado, como lo que
   merece celebrarse en esta pantalla. */
.reward-liga {
  font-size: var(--t-sm);
  font-weight: 700;
  color: #f0cf7c;
}

.reward-xp {
  font-size: var(--t-sm);
  font-weight: 700;
  color: var(--white);
}

.reward-xp.hidden,
.reward-tabla:empty {
  display: none;
}

/* ── Mejores marcas ── */
.reward-tabla {
  width: 100%;
  max-width: 320px;
  text-align: left;
}

.reward-tabla h3 {
  font-size: var(--t-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--ice);
  margin-bottom: 8px;
  text-align: center;
}

.reward-tabla-lista {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.reward-tabla-lista li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--t-sm);
}

.reward-tabla-yo {
  background: rgba(255, 255, 255, 0.16);
  font-weight: 700;
}

.reward-tabla-pos {
  color: var(--ice);
  font-variant-numeric: tabular-nums;
  opacity: 0.8;
}

.reward-tabla-nombre {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reward-tabla-pts {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* El salto entre el top y tu fila cuando no estás entre los diez. */
.reward-tabla-corte {
  display: block;
  text-align: center;
  color: var(--ice);
  opacity: 0.5;
  padding: 0;
  line-height: 1;
}

@media (max-width: 600px) {
  .curso-hud {
    top: 14px;
    right: 12px;
    padding: 8px 12px 8px 8px;
    font-size: var(--t-xs);
  }
  .hud-puntos strong { font-size: var(--t-md); }
}

/* ── Los bloques con cartas de verdad ──
   Preguntar sobre cartas con palabras es un examen; poner la carta en
   pantalla es un juego. */
.cartas-opciones {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.carta-opcion {
  padding: 4px;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 90px;
  transition: border-color 0.15s var(--ease), transform 0.1s var(--ease);
}

.carta-opcion img {
  width: 100%;
  border-radius: 5px;
  display: block;
}

.carta-opcion:hover:not(:disabled) {
  border-color: var(--navy);
  transform: translateY(-2px);
}

.carta-opcion:disabled { cursor: default; }
.carta-opcion.correct { border-color: var(--success); background: var(--success-bg); }
.carta-opcion.incorrect { border-color: var(--danger); background: var(--danger-bg); }
.carta-opcion.wrong { animation: carta-no 0.4s var(--ease); }

@keyframes carta-no {
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.carta-opcion-noimg {
  font-size: var(--t-xs);
  color: var(--text-dim);
  padding: 24px 8px;
  text-align: center;
  word-break: break-all;
}

/* ── Encontrar el fallo ── */
.zonas-lienzo {
  position: relative;
  display: flex;
  justify-content: center;
}

.zonas-lienzo img {
  max-width: 100%;
  max-height: 46vh;
  border-radius: var(--radius-md);
  cursor: crosshair;
  user-select: none;
}

/* La zona buena y el punto donde se pinchó, los dos centrados sobre su
   coordenada — de ahí el translate del 50 %. */
.zona-marca,
.zona-clic {
  position: absolute;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  pointer-events: none;
}

.zona-marca {
  border: 2px dashed var(--success);
  background: rgba(13, 158, 110, 0.14);
}

.zona-clic {
  width: 12px;
  height: 12px;
  border: 2px solid var(--white);
}

.zona-clic-bien { background: var(--success); }
.zona-clic-mal { background: var(--danger); }

/* ── Clasificar cartas ── */
.clasifica-mano {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  min-height: 40px;
}

.clasifica-mano .carta-opcion,
.clasifica-cubo-contenido .carta-opcion {
  width: 74px;
  min-height: 0;
}

.carta-opcion.elegida {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px var(--ice);
}

.clasifica-cubos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
}

.clasifica-cubo {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 8px;
  min-height: 84px;
  cursor: pointer;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.clasifica-cubo:hover { border-color: var(--navy); background: var(--ice); }
.clasifica-cubo.wrong { border-color: var(--danger); background: var(--danger-bg); }

.clasifica-cubo-nombre {
  display: block;
  font-size: var(--t-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-mid);
  margin-bottom: 8px;
}

.clasifica-cubo-contenido {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ══ Los estímulos del juego (curso-estimulos.js) ══
   Latido en la respuesta buena, sacudida en la mala, partículas, el
   combo en grande, la barra dorada con racha y el brillo de la medalla.
   Todo decorado: si las animaciones no corren, el juego funciona igual. */

/* La respuesta buena late una vez; la mala se sacude. Las clases
   .correct/.incorrect ya las pone cada tipo de bloque — aquí solo se
   les da cuerpo, así los bloques nuevos lo heredan gratis. */
@keyframes curso-latido {
  0% { transform: scale(1); }
  35% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

@keyframes curso-sacudida {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}

.quiz-option.correct,
.tf-option.correct,
.fillblank-option.correct,
.carta-opcion.correct {
  animation: curso-latido 0.35s var(--ease);
}

.quiz-option.incorrect,
.tf-option.incorrect,
.fillblank-option.incorrect,
.carta-opcion.incorrect,
.zona-clic-mal {
  animation: curso-sacudida 0.4s ease;
}

/* El chorro de partículas: cada una vuela hacia su --dx/--dy. */
@keyframes curso-particula-vuela {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  100% { transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0.3); opacity: 0; }
}

.curso-particula {
  position: fixed;
  z-index: 60;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  pointer-events: none;
  animation: curso-particula-vuela 0.65s ease-out forwards;
}

/* El «×2» en grande cuando sube el multiplicador. */
@keyframes curso-combo-sube {
  0% { transform: translate(-50%, 0) scale(0.6); opacity: 0; }
  25% { transform: translate(-50%, -14px) scale(1.1); opacity: 1; }
  70% { transform: translate(-50%, -26px) scale(1); opacity: 1; }
  100% { transform: translate(-50%, -46px) scale(0.95); opacity: 0; }
}

.curso-combo-grande {
  position: absolute;
  left: 50%;
  top: 18%;
  z-index: 55;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  animation: curso-combo-sube 1.3s ease-out forwards;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.curso-combo-grande strong {
  font-family: var(--font-display);
  font-size: 44px;
  line-height: 1;
  color: #f59e0b;
}

.curso-combo-grande span {
  font-size: var(--t-sm);
  font-weight: 700;
  color: #f59e0b;
}

/* La barra de progreso, dorada mientras hay multiplicador. */
.curso-progress-fill {
  transition: width 0.3s var(--ease), background 0.3s var(--ease);
}

.curso-progress-fill.progress-racha {
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

/* La medalla entra con presencia y un barrido de brillo por encima. */
@keyframes curso-medalla-entra {
  0% { transform: scale(0.5); opacity: 0; }
  60% { transform: scale(1.08); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes curso-medalla-brillo {
  0% { transform: translateX(-120%) rotate(18deg); }
  100% { transform: translateX(220%) rotate(18deg); }
}

.reward-medalla {
  position: relative;
  overflow: hidden;
  animation: curso-medalla-entra 0.5s var(--ease);
}

.reward-medalla::after {
  content: '';
  position: absolute;
  top: -30%;
  left: 0;
  width: 34%;
  height: 160%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  animation: curso-medalla-brillo 1.1s ease-out 0.45s both;
  pointer-events: none;
}

/* El botón del sonido, discreto en el marcador. */
.hud-silencio {
  display: inline-flex;
  align-items: center;
  border: none;
  background: none;
  padding: 4px;
  margin-left: 2px;
  color: inherit;
  opacity: 0.65;
  cursor: pointer;
}

.hud-silencio:hover {
  opacity: 1;
}

/* Quien pide menos movimiento, lo tiene: el juego entero funciona sin
   una sola animación (la vibración se corta en curso-estimulos.js). */
@media (prefers-reduced-motion: reduce) {
  .quiz-option.correct,
  .tf-option.correct,
  .fillblank-option.correct,
  .carta-opcion.correct,
  .quiz-option.incorrect,
  .tf-option.incorrect,
  .fillblank-option.incorrect,
  .carta-opcion.incorrect,
  .zona-clic-mal,
  .curso-particula,
  .curso-combo-grande,
  .reward-medalla,
  .reward-medalla::after {
    animation: none;
  }
}

/* ══ La pantalla del juego, con look de juego (tanda Cursos B) ══ */

/* La pregunta, en grande: es la protagonista de la pantalla. */
.block-question {
  font-size: var(--t-2xl);
  line-height: 1.3;
}

/* Botones "tecla" al estilo Duolingo: borde inferior gordo que se hunde
   al pulsar. Vale para todos los tipos de respuesta de texto. */
.quiz-option,
.tf-option,
.fillblank-option,
.desliza-btn {
  border-width: 1.5px 1.5px 4px;
  border-bottom-color: var(--border);
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease), transform 0.08s var(--ease);
}

.quiz-option:active:not(:disabled),
.tf-option:active:not(:disabled),
.fillblank-option:active:not(:disabled),
.desliza-btn:active:not(:disabled) {
  transform: translateY(2px);
  border-bottom-width: 2px;
  margin-bottom: 2px;
}

/* ── Desliza: ¿verdadero o falso? ── */
.desliza-zona {
  display: flex;
  justify-content: center;
  padding: 12px 0 8px;
  min-height: 130px;
}

.desliza-carta {
  max-width: 340px;
  min-width: 240px;
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 6px 18px rgba(15, 30, 50, 0.12);
  font-size: var(--t-xl);
  font-weight: 700;
  cursor: grab;
  touch-action: none;
  user-select: none;
  transition: border-color 0.15s var(--ease);
}

.desliza-carta:active {
  cursor: grabbing;
}

@keyframes desliza-vuela-dcha {
  to { transform: translateX(130%) rotate(14deg); opacity: 0; }
}

@keyframes desliza-vuela-izda {
  to { transform: translateX(-130%) rotate(-14deg); opacity: 0; }
}

.desliza-carta.desliza-vuela-dcha { animation: desliza-vuela-dcha 0.3s ease-in forwards; }
.desliza-carta.desliza-vuela-izda { animation: desliza-vuela-izda 0.3s ease-in forwards; }
.desliza-carta.desliza-bien { border-color: var(--success); }
.desliza-carta.desliza-mal { border-color: var(--danger); }

.desliza-botones {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 8px;
}

.desliza-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid var(--border);
  border-bottom-width: 4px;
  border-radius: var(--radius-md);
  background: var(--white);
  font-weight: 700;
  font-size: var(--t-md);
}

.desliza-btn-verdad:hover:not(:disabled) { border-color: var(--success); color: var(--success); }
.desliza-btn-falso:hover:not(:disabled) { border-color: var(--danger); color: var(--danger); }
.desliza-btn:disabled { opacity: 0.55; cursor: not-allowed; }

.desliza-progreso { text-align: center; margin: 8px 0 0; }

/* ── Memoria: parejas boca abajo ── */
.memoria-tablero {
  display: grid;
  grid-template-columns: repeat(4, minmax(70px, 110px));
  justify-content: center;
  gap: 12px;
  padding: 8px 0;
}

@media (max-width: 560px) {
  .memoria-tablero { grid-template-columns: repeat(3, minmax(70px, 1fr)); }
}

.memoria-carta {
  position: relative;
  aspect-ratio: 63 / 88;
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
  perspective: 500px;
}

.memoria-cara {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  backface-visibility: hidden;
  transition: transform 0.3s var(--ease);
  overflow: hidden;
}

.memoria-dorso {
  background: linear-gradient(135deg, var(--navy), #2b6a97);
  color: var(--white);
  font-family: var(--font-display);
  font-size: var(--t-2xl);
  font-weight: 800;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.memoria-frente {
  transform: rotateY(180deg);
  background: var(--white);
  border: 1px solid var(--border);
}

.memoria-frente img { width: 100%; height: 100%; object-fit: cover; }
.memoria-noimg { font-size: var(--t-2xs); padding: 4px; text-align: center; }

.memoria-carta.volteada .memoria-dorso { transform: rotateY(180deg); }
.memoria-carta.volteada .memoria-frente { transform: rotateY(0deg); }

.memoria-carta.resuelta { cursor: default; }
.memoria-carta.resuelta .memoria-frente { border-color: var(--success); box-shadow: 0 0 0 2px var(--success-bg); }

.memoria-info { text-align: center; margin: 0 0 8px; }

@media (prefers-reduced-motion: reduce) {
  .desliza-carta.desliza-vuela-dcha,
  .desliza-carta.desliza-vuela-izda {
    animation: none;
    opacity: 0;
  }
  .memoria-cara { transition: none; }
}

/* ══ Tanda Cursos C: escribe, las diferencias y la mascota ══ */

/* ── Escribe la respuesta ── */
.escribe-caja {
  display: flex;
  gap: 8px;
  margin: 8px 0 4px;
}

.escribe-caja input {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-bottom-width: 4px;
  border-radius: var(--radius-md);
  font-size: var(--t-lg);
  font-weight: 600;
  background: var(--white);
  color: var(--text);
}

.escribe-caja input:focus {
  outline: none;
  border-color: var(--navy);
}

.escribe-caja.correct input { border-color: var(--success); background: var(--success-bg); }
.escribe-caja.incorrect input { border-color: var(--danger); background: var(--danger-bg); color: var(--danger); }
.escribe-caja.correct { animation: curso-latido 0.35s var(--ease); }
.escribe-caja.incorrect { animation: curso-sacudida 0.4s ease; }

/* ── Las diferencias ── */
.diferencias-par {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 8px 0;
}

@media (max-width: 560px) {
  .diferencias-par { grid-template-columns: 1fr; }
}

.diferencias-par figure {
  margin: 0;
  position: relative;
}

.diferencias-par figcaption {
  font-size: var(--t-xs);
  font-weight: 700;
  color: var(--text-mid);
  opacity: 0.75;
  margin-bottom: 4px;
}

.diferencias-par img {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.diferencias-lienzo { cursor: crosshair; }
.diferencias-info { text-align: center; margin: 0 0 4px; }

/* ── La mascota que comenta ── */
@keyframes curso-mascota-entra {
  from { transform: translateY(60px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.curso-mascota {
  position: fixed;
  right: 14px;
  bottom: 82px;
  z-index: 70;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  pointer-events: none;
  animation: curso-mascota-entra 0.35s var(--ease);
}

.curso-mascota-burbuja {
  max-width: 200px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px 12px 2px 12px;
  padding: 8px 12px;
  font-size: var(--t-sm);
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(15, 30, 50, 0.16);
}

.curso-mascota img {
  width: 72px;
  height: auto;
}

.curso-mascota-se-va {
  transition: opacity 0.3s ease, transform 0.35s ease;
  opacity: 0;
  transform: translateY(24px);
}

@media (prefers-reduced-motion: reduce) {
  .escribe-caja.correct,
  .escribe-caja.incorrect,
  .curso-mascota {
    animation: none;
  }
}

/* Los deslizamientos entre bloques y la sacudida de una carta fallada
   (tanda 313). Apagarlos es SEGURO: el cambio de bloque lo mueve un
   `setTimeout` de 300 ms en js/curso.js, no el final de la animación —
   si dependiera de `animationend`, quitarle el movimiento a alguien le
   dejaría el curso congelado. */
@media (prefers-reduced-motion: reduce) {
  .slide-out-left,
  .slide-in-right,
  .slide-out-right,
  .slide-in-left,
  .match-item.wrong,
  .carta-opcion.wrong {
    animation: none;
  }
}