/* Profesor de idiomas de Krisia: estilos propios sobre Bootstrap (tema claro y oscuro) */
:root {
  --jp-font: "Yu Gothic UI", "Yu Gothic", Meiryo, "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  --seg-on: rgba(25, 135, 84, .22);
  --seg-on-border: #198754;
}

body {
  font-family: system-ui, "Segoe UI", Roboto, var(--jp-font);
  background: var(--bs-body-bg);
}

.navbar-brand span { font-weight: 800; }

/* Lista de unidades */
.nivel {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--bs-secondary-color);
  margin: .75rem 0 .35rem;
}

.nivel.proximo { opacity: .55; }

.unidad-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  width: 100%;
  padding: .45rem .55rem;
  border: 1px solid transparent;
  border-radius: .5rem;
  background: none;
  color: inherit;
  text-align: left;
  font-size: .9rem;
}

.unidad-item:hover { background: var(--bs-tertiary-bg); }
.unidad-item.activa { border-color: var(--bs-success); background: var(--bs-tertiary-bg); }

/* Palabras: kanji con lectura encima y romaji debajo */
.palabra {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--jp-font);
  line-height: 1.25;
}

.palabra rt {
  font-size: .55em;
  color: var(--bs-secondary-color);
}

.romaji {
  font-family: system-ui, sans-serif;
  font-size: .7em;
  color: var(--bs-secondary-color);
}

.vocab-card {
  position: relative;
  border: 1px solid var(--bs-border-color);
  background: var(--bs-body-bg);
  color: inherit;
  padding: 0;
}

.vocab-card:hover { border-color: var(--bs-success); }
.vocab-t { font-size: 1.35rem; margin-bottom: .2rem; }

.vocab-play {
  position: absolute;
  top: .5rem;
  right: .6rem;
  color: var(--bs-secondary-color);
}

/* Silabario y kanji */
.kana-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(3.6rem, 1fr));
  gap: .4rem;
}

.kana {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: .35rem 0;
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  background: var(--bs-body-bg);
  color: inherit;
}

.kana:hover { border-color: var(--bs-success); }
.kana-c { font-family: var(--jp-font); font-size: 1.6rem; line-height: 1.2; }
.kanji-card { cursor: pointer; }
.kanji-card:hover { border-color: var(--bs-success); }
.kanji-c { font-family: var(--jp-font); font-size: 2.6rem; line-height: 1.1; }

/* Frase sincronizada: cada parte se ilumina al sonar */
.sync {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .5rem;
  margin-bottom: .6rem;
}

.seg {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: .3rem .5rem;
  border: 1px solid var(--bs-border-color);
  border-radius: .5rem;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background .12s, border-color .12s;
}

.seg:hover { border-color: var(--seg-on-border); }
.seg.on { background: var(--seg-on); border-color: var(--seg-on-border); }

.glosa {
  font-size: .72rem;
  color: var(--bs-secondary-color);
  margin-top: .15rem;
}

.seg.on .glosa { color: var(--bs-body-color); font-weight: 600; }

.traduccion {
  font-size: .9rem;
  color: var(--bs-secondary-color);
  margin-bottom: .6rem;
}

/* Prácticas y ejercicios */
.practica-card {
  border: 1px solid var(--bs-border-color);
  background: var(--bs-body-bg);
  color: inherit;
}

.practica-card:hover { border-color: var(--bs-success); }

.ej-simbolo {
  font-family: var(--jp-font);
  font-size: 4rem;
  text-align: center;
  margin: .5rem 0 1rem;
}

.ej-palabra {
  font-size: 1.6rem;
  text-align: center;
  margin: .5rem 0 1rem;
}

.opcion {
  font-family: system-ui, sans-serif, var(--jp-font);
  font-size: 1.1rem;
  padding: .7rem;
}

.orden-linea {
  min-height: 3rem;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  padding: .5rem;
  border: 1px dashed var(--bs-border-color);
  border-radius: .5rem;
}

.pieza, .pieza-elegida { font-family: var(--jp-font); }

.pieza-elegida {
  padding: .3rem .6rem;
  border-radius: .4rem;
  background: var(--bs-tertiary-bg);
}

.acierto { border-color: var(--bs-success) !important; background: rgba(25, 135, 84, .15) !important; }
.error-ej { border-color: var(--bs-danger) !important; background: rgba(220, 53, 69, .12) !important; }

/* Micrófono grabando */
.grabando {
  color: #fff !important;
  background: var(--bs-danger) !important;
  border-color: var(--bs-danger) !important;
  animation: pulso 1.2s infinite;
}

@keyframes pulso {
  50% { opacity: .6; }
}

/* Conversación */
.charla {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  max-height: 55vh;
  overflow-y: auto;
  padding: .25rem;
}

.burbuja {
  max-width: 90%;
  padding: .7rem .9rem;
  border-radius: .8rem;
  border: 1px solid var(--bs-border-color);
}

.burbuja.alumno { align-self: flex-end; background: var(--bs-tertiary-bg); }
.burbuja.profesor { align-self: flex-start; }

.correccion {
  font-size: .9rem;
  padding: .45rem .6rem;
  margin-bottom: .5rem;
  border-left: 3px solid var(--bs-warning);
  background: rgba(255, 193, 7, .1);
  border-radius: .3rem;
}

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

@media (max-width: 575.98px) {
  .vocab-t { font-size: 1.15rem; }
  .seg { font-size: 1.05rem; }
  .ej-simbolo { font-size: 3.2rem; }
}