/* ─── SVD Panel ──────────────────────────────────────────────── */
#panel-svd .scroll-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ── Input matrix editor ── */
.matrix-editor {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.matrix-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 8px;
}

.matrix-grid {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.matrix-row { display: flex; gap: 4px; }

.matrix-input {
  width: 56px;
  height: 34px;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}
.matrix-input:focus { border-color: var(--blue); }

/* preset buttons */
.preset-btns {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-self: flex-end;
}

/* ── Decomposition display ── */
.decomp-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}
.decomp-col { display: flex; flex-direction: column; gap: 6px; }
.decomp-op {
  font-size: 22px;
  color: var(--muted);
  align-self: center;
  padding-top: 22px;
  flex-shrink: 0;
}

/* ── Matrix cell (output, heat-map colored) ── */
.matrix-cell {
  width: 56px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 11px;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

/* ── Low-rank slider row ── */
.lowrank-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lowrank-row input { flex: 1; max-width: 200px; }
.lowrank-row .k-label {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  min-width: 44px;
}

/* ── SVD metrics row ── */
.svd-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}