/* Wave 138 — interactive scoring calculator on methodology pages.
 * DESIGN.md tokens only (var(--…)); no raw hex / no inline styles.
 */

.mth-calc-card {
  margin-top: 32px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
}

.mth-calc-title {
  margin: 0 0 8px;
  font-family: var(--sans);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--text);
}

.mth-calc-help {
  margin: 0 0 20px;
  color: var(--muted2);
  font-size: var(--fs-sm);
}

.mth-input-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}

.mth-input-row {
  display: grid;
  grid-template-columns: 220px 1fr 64px;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-sm);
  color: var(--text2);
}

.mth-input-label {
  font-weight: 500;
}

.mth-input-slider {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

.mth-input-value {
  font-family: var(--mono);
  font-size: var(--fs-sm);
  color: var(--text);
  text-align: right;
  padding: 4px 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
}

.mth-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.mth-check {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--text2);
  transition: border-color 0.15s, background 0.15s;
}

.mth-check:hover {
  border-color: var(--border3);
  background: var(--surface3);
}

.mth-check input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

.mth-fieldset {
  margin: 0 0 16px;
  padding: 12px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.mth-fieldset legend {
  padding: 0 6px;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.mth-radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 16px;
  font-size: var(--fs-sm);
  color: var(--text2);
  cursor: pointer;
}

.mth-radio input[type="radio"] {
  accent-color: var(--accent);
  cursor: pointer;
}

.mth-output-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  margin: 20px 0 16px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
}

.mth-output-score {
  font-family: var(--mono);
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  min-width: 96px;
}

.mth-output-grade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  font-family: var(--sans);
  font-size: var(--fs-2xl);
  font-weight: 700;
  background: var(--surface3);
  color: var(--text);
}

.mth-output-grade--a {
  background: var(--status-pass-bg);
  color: var(--green);
  border: 1px solid var(--status-pass-border);
}

.mth-output-grade--b {
  background: var(--status-info-bg);
  color: var(--accent);
  border: 1px solid rgba(89,168,255,.25);
}

.mth-output-grade--c {
  background: var(--status-warn-bg);
  color: var(--yellow);
  border: 1px solid var(--status-warn-border);
}

.mth-output-grade--d {
  background: rgba(245,158,66,.12);
  color: var(--orange);
  border: 1px solid rgba(245,158,66,.25);
}

.mth-output-grade--f {
  background: var(--status-fail-bg);
  color: var(--red);
  border: 1px solid var(--status-fail-border);
}

.mth-formula-trace {
  display: block;
  margin: 0 0 20px;
  padding: 14px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--text2);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  min-height: 1.5em;
}

.mth-calc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

@media (max-width: 720px) {
  .mth-input-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .mth-input-value {
    justify-self: end;
  }
  .mth-output-row {
    flex-direction: column;
    align-items: flex-start;
  }
}