/* mistake-overlay — AI explanation + follow-up chat for wrong answers */

.mistake-overlay {
  align-items: stretch;
  justify-content: flex-end;
}

.mistake-overlay__sheet {
  background: var(--surface);
  border-top-left-radius: var(--r-lg, 18px);
  border-top-right-radius: var(--r-lg, 18px);
  padding: 18px 18px 22px;
  max-height: 92vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: mistake-rise 200ms ease-out;
}

@keyframes mistake-rise {
  from { transform: translateY(20px); opacity: 0.6; }
  to   { transform: translateY(0); opacity: 1; }
}

.mistake-overlay__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mistake-overlay__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.mistake-overlay__close {
  background: transparent;
  border: none;
  font-size: 24px;
  line-height: 1;
  color: var(--ink-2);
  cursor: pointer;
  padding: 4px 8px;
}

.mistake-overlay__word-card {
  background: var(--surface-2, #f3eddd);
  border-radius: var(--r-md, 12px);
  padding: 14px 16px;
  text-align: center;
}

.mistake-overlay__kr {
  font-family: var(--font-kr);
  font-size: 28px;
  color: var(--ink);
}

.mistake-overlay__rom {
  font-size: 12px;
  color: var(--ink-3);
  margin-top: 4px;
}

.mistake-overlay__compare {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mistake-overlay__compare-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--r-md, 12px);
  font-size: 14px;
}

.mistake-overlay__compare-row--wrong {
  background: rgba(220, 60, 60, 0.10);
  color: var(--ink);
}

.mistake-overlay__compare-row--correct {
  background: rgba(50, 140, 80, 0.12);
  color: var(--ink);
}

.mistake-overlay__compare-label {
  color: var(--ink-3);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mistake-overlay__compare-value {
  font-weight: 600;
}

.mistake-overlay__explanation-header {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin-bottom: 4px;
}

.mistake-overlay__explanation-text {
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--surface-2, #f3eddd);
  padding: 12px 14px;
  border-radius: var(--r-md, 12px);
  border-left: 3px solid var(--accent, #2f5d4a);
}

.mistake-overlay__loading {
  color: var(--ink-3);
  font-style: italic;
}

.mistake-overlay__error {
  color: rgba(180, 40, 40, 0.9);
  background: rgba(220, 60, 60, 0.08);
  border-left-color: rgba(180, 40, 40, 0.7);
}

.mistake-overlay__thread {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mistake-overlay__bubble {
  padding: 10px 14px;
  border-radius: var(--r-md, 12px);
  font-size: 14px;
  line-height: 1.4;
  max-width: 90%;
}

.mistake-overlay__bubble--user {
  align-self: flex-end;
  background: var(--accent, #2f5d4a);
  color: var(--accent-ink, #fff);
}

.mistake-overlay__bubble--ai {
  align-self: flex-start;
  background: var(--surface-2, #f3eddd);
  color: var(--ink);
}

.mistake-overlay__bubble--error {
  background: rgba(220, 60, 60, 0.12);
  color: rgba(180, 40, 40, 0.9);
}

.mistake-overlay__footer {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.mistake-overlay__input-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.mistake-overlay__input-row.hidden {
  display: none;
}

.mistake-overlay__input {
  flex: 1;
  resize: none;
  font-family: inherit;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: var(--r-sm, 8px);
  border: 1px solid var(--hairline);
  background: var(--surface);
  color: var(--ink);
}

.mistake-overlay__send {
  align-self: flex-end;
  min-width: 70px;
}

.mistake-overlay__continue {
  width: 100%;
}

.mistake-overlay__kr-toggle {
  align-self: stretch;
  min-width: 64px;
  font-size: 12px;
  padding: 0 10px;
}
.mistake-overlay__kr-toggle--active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.mistake-overlay__kb-host {
  margin-top: 10px;
  padding: 6px;
  background: var(--surface-2);
  border-radius: var(--r-md, 12px);
  border: 1px solid var(--hairline);
}
.mistake-overlay__kb-host.hidden {
  display: none;
}

/* Desktop responsive: center the sheet as a card instead of a bottom
   sheet, matching the rest of the app's desktop clamp behavior. */
@media (min-width: 700px) {
  .mistake-overlay {
    align-items: center;
    justify-content: center;
  }
  .mistake-overlay__sheet {
    max-width: 560px;
    width: 100%;
    margin: 0 24px;
    border-radius: var(--r-lg, 18px);
    max-height: 86vh;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
  }
  .mistake-overlay__compare {
    flex-direction: row;
    gap: 12px;
  }
  .mistake-overlay__compare-row {
    flex: 1;
  }
  .mistake-overlay__input {
    min-height: 56px;
  }
}