.field-group {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem;
  background: var(--surface-soft);
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}

.field-group legend,
.field-group > span {
  width: 100%;
  font-weight: 700;
}

.field-group select,
.field-group textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  background: #ffffff;
}

textarea {
  resize: vertical;
  min-height: 200px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #ffffff;
  white-space: normal;
  line-height: 1.35;
}

.mode-group {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  align-items: stretch;
}

.mode-group legend {
  grid-column: 1 / -1;
}

.mode-group .chip {
  width: 100%;
  min-height: 44px;
  justify-content: flex-start;
  box-sizing: border-box;
}

.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: #eef2ff;
  color: #3730a3;
  border: 1px solid #c7d2fe;
  width: fit-content;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.6rem 0.95rem;
  cursor: pointer;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 120ms ease, filter 120ms ease, background 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-strong);
}

.btn-secondary {
  border-color: #93c5fd;
  background: #eff6ff;
  color: #1d4ed8;
}

.btn-danger {
  background: #fee2e2;
  border-color: #fecaca;
  color: var(--danger);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.question-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  background: #ffffff;
  display: grid;
  gap: 1rem;
}

.question-stem {
  line-height: 1.45;
}

.choice-list {
  display: grid;
  gap: 0.6rem;
}

.choice-option {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.72rem;
  background: var(--surface-soft);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.choice-option input[type="radio"] {
  width: 1rem;
  height: 1rem;
}

.choice-option.is-correct {
  border-color: #86efac;
  background: #f0fdf4;
}

.choice-option.is-wrong {
  border-color: #fca5a5;
  background: #fef2f2;
}

.feedback {
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 0.8rem;
  display: grid;
  gap: 0.35rem;
}

.feedback.is-good {
  border-color: #86efac;
  background: #f0fdf4;
}

.feedback.is-bad {
  border-color: #fca5a5;
  background: #fef2f2;
}

.feedback-title {
  font-weight: 800;
}

.feedback-body {
  line-height: 1.45;
}

.solution-details {
  border-top: 1px dashed var(--line);
  margin-top: 0.4rem;
  padding-top: 0.45rem;
}

.solution-details summary {
  cursor: pointer;
  font-weight: 700;
  color: #0f172a;
}

.solution-grid {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.solution-block {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.6rem;
  background: #ffffff;
}

.solution-block h3 {
  margin: 0;
  font-size: 0.95rem;
}

.solution-block ul,
.solution-block ol {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.25rem;
}

.solution-block a {
  color: #1d4ed8;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.rationale-list li.is-correct {
  color: #166534;
}

.rationale-list li.is-wrong {
  color: #991b1b;
}

.metric-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-soft);
  padding: 0.8rem;
  display: grid;
  gap: 0.2rem;
}

.metric-value {
  font-size: 1.4rem;
  font-weight: 800;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 380px;
}

.table th,
.table td {
  padding: 0.66rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.table tbody tr:last-child td {
  border-bottom: 0;
}

.alert {
  border-radius: 12px;
  border: 1px solid #fcd34d;
  background: #fffbeb;
  color: var(--warn);
  padding: 0.75rem;
  display: grid;
  gap: 0.55rem;
}

.error-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.35rem;
}

.code-block {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #0f172a;
  color: #e2e8f0;
  padding: 0.8rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 80px;
}

@media (max-width: 900px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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