:root {
  --mtxc-primary: #0284c7;
  --mtxc-primary-hover: #0369a1;
  --mtxc-bg-card: #ffffff;
  --mtxc-border: #e2e8f0;
  --mtxc-text: #1e293b;
  --mtxc-muted: #64748b;
  --mtxc-success: #16a34a;
  --mtxc-danger: #dc2626;
  --mtxc-hero-bg: #f8fafc;
}

.mtxc-main {
  padding: 1.5rem 1rem 3rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
  color: var(--mtxc-text);
  font-family: inherit;
}

.mtxc-wrap {
  width: 100%;
}

.mtxc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 992px) {
  .mtxc-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.mtxc-card {
  background: var(--mtxc-bg-card);
  border: 1px solid var(--mtxc-border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.mtxc-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mtxc-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  color: var(--mtxc-text);
}

.mtxc-sub-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--mtxc-text);
}

.mtxc-head-btns {
  display: flex;
  gap: 0.5rem;
}

.mtxc-dim-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.mtxc-dim-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--mtxc-text);
}

.mtxc-dim-pills {
  display: flex;
  gap: 0.4rem;
}

.mtxc-dim-btn {
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--mtxc-border);
  border-radius: 6px;
  padding: 0.35rem 0.65rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--mtxc-text);
  cursor: pointer;
}

.mtxc-dim-active {
  background: var(--mtxc-primary);
  border-color: var(--mtxc-primary);
  color: #ffffff;
}

.mtxc-form-group {
  margin-bottom: 1.25rem;
}

.mtxc-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--mtxc-text);
}

.mtxc-select {
  width: 100%;
  box-sizing: border-box;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--mtxc-border);
  border-radius: 6px;
  background: transparent;
  color: var(--mtxc-text);
  font-family: inherit;
  font-size: 0.9rem;
}

.mtxc-select:focus {
  outline: none;
  border-color: var(--mtxc-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

/* Matrix Grids */
.mtxc-matrix-block {
  background: rgba(0, 0, 0, 0.015);
  border: 1px solid var(--mtxc-border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.mtxc-matrix-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.mtxc-matrix-title {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--mtxc-muted);
  margin-bottom: 0.4rem;
}

.mtxc-matrix-grid {
  display: grid;
  gap: 0.4rem;
  width: 100%;
  max-width: 320px;
}

.mtxc-dim-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.mtxc-grid-2 { grid-template-columns: repeat(2, 1fr); }
.mtxc-grid-3 { grid-template-columns: repeat(3, 1fr); }
.mtxc-grid-4 { grid-template-columns: repeat(4, 1fr); }
.mtxc-grid-5 { grid-template-columns: repeat(5, 1fr); }
.mtxc-grid-6 { grid-template-columns: repeat(6, 1fr); }
.mtxc-grid-7 { grid-template-columns: repeat(7, 1fr); }
.mtxc-grid-8 { grid-template-columns: repeat(8, 1fr); }
.mtxc-grid-9 { grid-template-columns: repeat(9, 1fr); }

.mtxc-matrix-grid {
  display: grid;
  gap: 0.3rem;
  width: 100%;
  max-width: 460px;
}

.mtxc-cell {
  width: 100%;
  box-sizing: border-box;
  text-align: center;
  padding: 0.5rem 0.25rem;
  border: 1px solid var(--mtxc-border);
  border-radius: 4px;
  background: var(--mtxc-bg-card);
  color: var(--mtxc-text);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  font-family: monospace;
}

.mtxc-cell:focus {
  outline: none;
  border-color: var(--mtxc-primary);
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.15);
}

.mtxc-view-hidden {
  display: none;
}

/* Hero Result Box */
.mtxc-hero-box {
  background: var(--mtxc-hero-bg);
  border: 1px solid var(--mtxc-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
}

.mtxc-hero-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--mtxc-muted);
  margin-bottom: 0.25rem;
}

.mtxc-hero-num {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--mtxc-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.mtxc-res-cell {
  width: 100%;
  box-sizing: border-box;
  text-align: center;
  padding: 0.5rem 0.25rem;
  border: 1px solid var(--mtxc-border);
  border-radius: 4px;
  background: var(--mtxc-bg-card);
  color: var(--mtxc-primary);
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-family: monospace;
}

.mtxc-step-list {
  padding-left: 1.25rem;
  margin: 0.5rem 0 0 0;
  font-size: 0.85rem;
  color: var(--mtxc-text);
  line-height: 1.5;
}

.mtxc-error-text {
  color: var(--mtxc-danger);
  font-size: 0.85rem;
  margin: 0.5rem 0 0 0;
}

.mtxc-result-matrix-wrap {
  margin-top: 0.5rem;
}

/* Properties Box */
.mtxc-props-box {
  border: 1px solid var(--mtxc-border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.mtxc-props-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.mtxc-prop-item {
  display: flex;
  flex-direction: column;
}

.mtxc-prop-name {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--mtxc-muted);
  margin-bottom: 0.2rem;
}

.mtxc-prop-val {
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--mtxc-text);
}

.mtxc-text-success { color: var(--mtxc-success); }
.mtxc-text-danger { color: var(--mtxc-danger); }

/* Steps Box */
.mtxc-steps-box {
  background: rgba(0, 0, 0, 0.015);
  border: 1px solid var(--mtxc-border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.mtxc-steps-content {
  font-size: 0.825rem;
  line-height: 1.5;
}

.mtxc-step-p {
  margin: 0 0 0.4rem 0;
  color: var(--mtxc-text);
  font-weight: 600;
}

.mtxc-steps-list {
  padding-left: 1.25rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Actions */
.mtxc-btn-ghost {
  background: transparent;
  color: var(--mtxc-text);
  border: 1px solid var(--mtxc-border);
  border-radius: 6px;
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.mtxc-btn-ghost:hover {
  background: var(--mtxc-border);
}

.mtxc-btn-action {
  background: var(--mtxc-primary);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}

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

.mtxc-action-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.mtxc-status-msg {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--mtxc-success);
}
/* tf:dark-palette — generated by migrate_chrome.py */
/* Neutrals inherit the shared chrome tokens so all tools share one
   ground; brand hues are kept and lightened, never inverted. */
[data-theme="dark"] {
  --mtxc-primary: #81bcda;
  --mtxc-primary-hover: #69aed4;
  --mtxc-bg-card: var(--tf-surface);
  --mtxc-border: var(--tf-surface);
  --mtxc-text: var(--tf-ink);
  --mtxc-muted: var(--tf-ink-faint);
  --mtxc-success: #7ad89d;
  --mtxc-danger: #da8181;
  --mtxc-hero-bg: var(--tf-surface);
}