/* TrainerCard — single drillable card. */

.trainer-card {
  background: var(--color-surface, #1a1d22);
  border: 1px solid var(--color-border, #2a2f36);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}

.trainer-card.is-new {
  border-color: var(--color-accent, #ff7f00);
  border-style: dashed;
}

.trainer-card__head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted, #8a8f98);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.trainer-card__chapter {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.trainer-card__type-badge {
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 4px;
}

.trainer-card__new-badge {
  background: var(--color-accent, #ff7f00);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.trainer-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.trainer-card__prompt {
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text, #e0e3e7);
  background: rgba(255, 255, 255, 0.02);
  padding: 12px 16px;
  border-radius: 8px;
}

.trainer-card__answer-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.trainer-card__input-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.trainer-card__text-input {
  width: 100%;
  background: #0d0f12;
  border: 1px solid var(--color-border, #2a2f36);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--color-text, #e0e3e7);
  font-size: 15px;
  font-family: inherit;
}

.trainer-card__text-input:focus {
  outline: none;
  border-color: var(--color-accent, #ff7f00);
}

.trainer-card__radio-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 6px;
  cursor: pointer;
}

.trainer-card__radio-row:hover {
  background: rgba(255, 255, 255, 0.04);
}

.trainer-card__reveal {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.trainer-card__btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.trainer-card__hint-host,
.trainer-card__solution-host {
  background: rgba(255, 127, 0, 0.05);
  border-left: 3px solid var(--color-accent, #ff7f00);
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.5;
}

.trainer-card__solution-correct {
  margin-bottom: 8px;
  font-weight: 600;
}

.trainer-card__solution-explanation {
  color: var(--color-text-secondary, #b0b5be);
}

.trainer-card__confidence-host {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.trainer-card__conf-btn {
  width: 100%;
}

@media (max-width: 768px) {
  .trainer-card {
    padding: 12px;
  }
  .trainer-card__confidence-host {
    grid-template-columns: repeat(2, 1fr);
  }
}