.language-page,
.language-page * {
  box-sizing: border-box;
}

.language-page [hidden] {
  display: none;
}

.language-page {
  width: 100%;
  max-width: 820px;
  margin-left: 0;
  margin-right: auto;
}

.language-page h1 {
  margin: 0 0 1.5rem 0;
  font-size: clamp(36px, 7vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.language-tabs,
.language-type-tabs,
.language-check-actions,
.language-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.language-tabs,
.language-type-tabs {
  margin-bottom: 1rem;
}

.language-type-tabs button {
  flex: 1 1 180px;
}

.language-card {
  margin-top: 1.5rem;
  border: 1px solid var(--border, rgba(0, 0, 0, 0.18));
  background: #fff;
  padding: clamp(20px, 4vw, 40px);
}

.language-state,
.language-progress,
.language-prompt-label,
.language-validation {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(0, 0, 0, 0.55);
}

.language-prompt {
  margin: 0.45rem 0 2rem;
  font-size: clamp(28px, 5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}

.language-answer-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.language-page textarea {
  display: block;
  width: 100%;
  min-height: 8rem;
  resize: vertical;
  border: 1px solid var(--border, rgba(0, 0, 0, 0.25));
  border-radius: 0;
  padding: 0.8rem;
  color: inherit;
  background: #fff;
  font: inherit;
  line-height: 1.5;
}

.language-validation {
  margin-top: 0.5rem;
  color: #8a2525;
}

.language-check-actions {
  margin-top: 0.75rem;
}

.language-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border, rgba(0, 0, 0, 0.18));
}

.language-response {
  min-width: 0;
}

.language-response h2,
.language-explanation h3 {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  line-height: 1.3;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.language-response p,
.language-explanation p {
  margin: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.language-response-reference {
  padding-left: 1rem;
  border-left: 3px solid #111;
}

.language-explanation {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border, rgba(0, 0, 0, 0.18));
  color: rgba(0, 0, 0, 0.72);
  font-size: 0.94rem;
  line-height: 1.5;
}

.language-explanation-section + .language-explanation-section {
  margin-top: 1rem;
}

.language-explanation-section p + p {
  margin-top: 0.35rem;
}

.language-explanation-note {
  color: rgba(0, 0, 0, 0.58);
}

.language-grammar-focus {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.language-grammar-focus li {
  border: 1px solid var(--border, rgba(0, 0, 0, 0.18));
  padding: 2px 8px;
  font-size: 0.86rem;
}

.language-register {
  color: rgba(0, 0, 0, 0.5);
  font-size: 0.86rem;
}

.language-actions {
  margin-top: 1.5rem;
}

.language-page button {
  max-width: 100%;
  border: 1px solid var(--border, rgba(0, 0, 0, 0.18));
  border-radius: 999px;
  padding: 8px 14px;
  color: inherit;
  background: #fff;
  font: inherit;
  line-height: 1.35;
  cursor: pointer;
  overflow-wrap: anywhere;
}

.language-page button:hover,
.language-page button.is-active {
  border-color: #111;
  color: #fff;
  background: #111;
}

.language-page button:disabled {
  cursor: default;
  opacity: 0.45;
}

.language-page button:focus-visible,
.language-page textarea:focus-visible {
  outline: 3px solid #2a64d6;
  outline-offset: 3px;
}

.language-progress {
  margin-top: 1.5rem;
}

@media (max-width: 520px) {
  .language-results {
    grid-template-columns: 1fr;
  }

  .language-response-reference {
    padding-top: 1rem;
    padding-left: 0;
    border-top: 3px solid #111;
    border-left: 0;
  }

  .language-actions button {
    flex: 1 1 8rem;
  }
}