/* bitwiz calculators, scoped under .bw-calc (from the former calc/style.css). */
.bw-calc {
  /* Mapped onto the theme so the calculators follow light and dark mode. */
  --bg: var(--md-default-bg-color);
  --bg-light: var(--md-code-bg-color);
  --bg-lighter: var(--md-default-fg-color--lightest);
  --text: var(--md-default-fg-color--light);
  --text-bright: var(--md-default-fg-color);
  --accent: var(--md-typeset-a-color);
  --accent-dim: var(--md-accent-fg-color);
  --warning: #b86e00;
  --error: #c62828;
  --border: var(--md-default-fg-color--lightest);
  --font-mono: var(--md-code-font-family);
}
[data-md-color-scheme="slate"] .bw-calc { --warning: #ffaa00; --error: #ff5c5c; }
.bw-calc * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.bw-calc .tagline {
  color: var(--text);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}
.bw-calc .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.bw-calc .tab {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1rem;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.bw-calc .tab:hover {
  background: var(--bg-lighter);
  color: var(--text-bright);
}
.bw-calc .tab.active {
  background: var(--accent-dim);
  color: var(--bg);
  border-color: var(--accent);
}
.bw-calc .calculator {
  display: none;
  animation: fadeIn 0.2s ease;
}
.bw-calc .calculator.active {
  display: block;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.bw-calc .calculator h2 {
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}
.bw-calc .calculator h2::before {
  content: '# ';
  color: var(--text);
}
.bw-calc .description {
  color: var(--text);
  font-size: 0.85rem;
  margin-bottom: 0;
  opacity: 0.8;
}
.bw-calc .calc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.bw-calc .calc-header > div {
  flex: 1;
}
.bw-calc .reset-btn {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.35rem 0.75rem;
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.bw-calc .reset-btn:hover {
  background: var(--bg-lighter);
  border-color: var(--accent-dim);
  color: var(--text-bright);
}
.bw-calc .reset-btn:active {
  background: var(--accent-dim);
  color: var(--bg);
}
.bw-calc .preset-selector {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding: 0.75rem;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-dim);
}
.bw-calc .preset-selector label {
  color: var(--text);
  font-size: 0.85rem;
  white-space: nowrap;
}
.bw-calc .preset-selector select {
  flex: 1;
  max-width: 300px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-bright);
  padding: 0.4rem 0.6rem;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.bw-calc .preset-selector select:focus {
  outline: none;
  border-color: var(--accent);
}
.bw-calc .preset-selector select option {
  background: var(--bg);
  color: var(--text-bright);
}
.bw-calc .preset-selector select optgroup {
  color: var(--accent);
  font-style: normal;
}
.bw-calc .inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.bw-calc .input-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.bw-calc .input-group label {
  color: var(--text);
  font-size: 0.8rem;
}
.bw-calc .input-group input[type="number"], .bw-calc .input-group input[type="text"] {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text-bright);
  padding: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
  width: 100%;
}
.bw-calc .input-group input:focus {
  outline: none;
  border-color: var(--accent);
}
.bw-calc .input-group input[type="checkbox"] {
  width: auto;
  margin-right: 0.5rem;
  accent-color: var(--accent);
}
.bw-calc .input-group label:has(input[type="checkbox"]) {
  flex-direction: row;
  align-items: center;
  cursor: pointer;
}
.bw-calc .results {
  background: var(--bg-light);
  border: 1px solid var(--border);
  padding: 1rem;
  margin-bottom: 1.5rem;
  position: relative;
}
.bw-calc .results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.bw-calc .results h3 {
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 400;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.bw-calc .copy-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.3rem 0.6rem;
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: all 0.2s;
}
.bw-calc .copy-btn:hover {
  background: var(--bg-lighter);
  border-color: var(--accent);
  color: var(--text-bright);
}
.bw-calc .copy-btn.copied {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--bg);
}
.bw-calc .copy-btn svg {
  width: 14px;
  height: 14px;
}
.bw-calc .result-row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--border);
}
.bw-calc .result-row:last-child {
  border-bottom: none;
}
.bw-calc .result-label {
  color: var(--text);
}
.bw-calc .result-value {
  color: var(--accent);
  font-weight: 600;
}
.bw-calc .result-value.warning {
  color: var(--warning);
}
.bw-calc .result-value.error {
  color: var(--error);
}
.bw-calc .result-warning {
  margin-top: 0.75rem;
  padding: 0.5rem;
  background: rgba(255, 170, 0, 0.1);
  border-left: 3px solid var(--warning);
  color: var(--warning);
  font-size: 0.85rem;
}
.bw-calc .formula {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-dim);
  padding: 1rem;
  margin-top: 1.5rem;
}
.bw-calc .formula h3 {
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.bw-calc .formula code {
  display: block;
  color: var(--text-bright);
  font-size: 0.9rem;
  padding: 0.25rem 0;
}
.bw-calc .pll-results {
  max-height: 300px;
  overflow-y: auto;
}
.bw-calc .pll-results table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.bw-calc .pll-results th, .bw-calc .pll-results td {
  padding: 0.5rem;
  text-align: right;
  border-bottom: 1px solid var(--border);
}
.bw-calc .pll-results th {
  color: var(--text);
  font-weight: 400;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}
.bw-calc .pll-results td {
  color: var(--text-bright);
}
.bw-calc .pll-results tr:hover td {
  background: var(--bg-lighter);
}
.bw-calc .pll-results .exact {
  color: var(--accent);
}
.bw-calc .pll-results .placeholder {
  color: var(--text);
  opacity: 0.6;
  font-style: italic;
}
.bw-calc .pll-results .no-results {
  color: var(--warning);
}
.bw-calc .pll-results .pfd-warning td {
  opacity: 0.6;
}
.bw-calc .pll-results .pfd-note {
  color: var(--warning);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}
.bw-calc .serdes-results {
  max-height: 300px;
  overflow-y: auto;
}
.bw-calc .serdes-results table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.bw-calc .serdes-results th, .bw-calc .serdes-results td {
  padding: 0.5rem;
  text-align: right;
  border-bottom: 1px solid var(--border);
}
.bw-calc .serdes-results th {
  color: var(--text);
  font-weight: 400;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}
.bw-calc .serdes-results td {
  color: var(--text-bright);
}
.bw-calc .serdes-results tr:hover td {
  background: var(--bg-lighter);
}
.bw-calc .serdes-results .exact td {
  color: var(--accent);
}
.bw-calc .rec-badge {
  display: inline-block;
  font-size: 0.65rem;
  padding: 0.15rem 0.35rem;
  margin-left: 0.4rem;
  border-radius: 3px;
  font-weight: 600;
  vertical-align: middle;
  cursor: help;
}
.bw-calc .rec-badge.single {
  background: var(--accent);
  color: var(--bg);
}
.bw-calc .rec-badge.multi {
  background: var(--warning);
  color: var(--bg);
}
.bw-calc .rec-legend {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text);
}
.bw-calc .rec-legend .rec-badge {
  margin-left: 0;
  margin-right: 0.3rem;
}
.bw-calc .serdes-results .placeholder {
  color: var(--text);
  opacity: 0.6;
  font-style: italic;
}
.bw-calc .serdes-results .no-results {
  color: var(--warning);
  line-height: 1.6;
}
.bw-calc .serdes-results .no-results strong {
  color: var(--error);
}
.bw-calc .serdes-results .refclk-note {
  color: var(--warning);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}
.bw-calc .serdes-results .error-bullet {
  display: block;
  margin-left: 0.5rem;
  color: var(--text);
}
.bw-calc .tooltip-note {
  font-size: 0.85em;
  opacity: 0.8;
  margin-top: 0.5rem;
  font-style: italic;
}
.bw-calc .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.bw-calc ::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.bw-calc ::-webkit-scrollbar-track {
  background: var(--bg);
}
.bw-calc ::-webkit-scrollbar-thumb {
  background: var(--border);
}
.bw-calc ::-webkit-scrollbar-thumb:hover {
  background: var(--text);
}
.bw-calc .input-group label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.bw-calc .help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: var(--bg-lighter);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  font-size: 10px;
  font-weight: bold;
  cursor: help;
  flex-shrink: 0;
  transition: all 0.2s;
}
.bw-calc .help-icon:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--bg);
}
.bw-calc .help-wrapper {
  position: relative;
  display: inline-flex;
}
.bw-calc .help-tooltip {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  background: var(--bg-light);
  border: 1px solid var(--accent-dim);
  padding: 1rem;
  padding-top: 1.5rem;
  font-size: 0.85rem;
  line-height: 1.5;
  z-index: 1000;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.7);
}
.bw-calc .tooltip-close {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding: 0;
}
.bw-calc .tooltip-close:hover {
  color: var(--accent);
}
.bw-calc .help-wrapper:hover .help-tooltip:not(.closed), .bw-calc .help-tooltip.active:not(.closed) {
  display: block;
}
.bw-calc .help-tooltip h4 {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.bw-calc .help-tooltip p {
  color: var(--text);
  margin-bottom: 0.5rem;
}
.bw-calc .help-tooltip p:last-child {
  margin-bottom: 0;
}
.bw-calc .help-tooltip strong {
  color: var(--text-bright);
}
.bw-calc .help-tooltip .tip-list {
  margin: 0.4rem 0;
  padding-left: 0.2rem;
  line-height: 1.7;
}
.bw-calc .help-tooltip code {
  background: var(--bg);
  padding: 0.1rem 0.3rem;
  font-size: 0.75rem;
}
.bw-calc .mem-summary {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-lighter);
  border-radius: 4px;
}
.bw-calc .mem-peak, .bw-calc .mem-effective {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}
.bw-calc .mem-summary .label {
  font-weight: 500;
  color: var(--text);
  min-width: 140px;
}
.bw-calc .mem-summary .value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-bright);
}
.bw-calc .mem-effective .efficiency {
  font-size: 0.9rem;
  color: var(--accent);
}
.bw-calc .mem-secondary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--bg-lighter);
  border-radius: 4px;
  font-size: 0.9rem;
}
.bw-calc .secondary-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.bw-calc .secondary-item .label {
  font-size: 0.8rem;
  color: var(--text);
  opacity: 0.7;
}
.bw-calc .secondary-item .value {
  font-weight: 500;
  color: var(--text-bright);
}
.bw-calc .mem-results h4 {
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1.5rem 0 0.75rem;
}
.bw-calc .breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.bw-calc .breakdown-table th, .bw-calc .breakdown-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.bw-calc .breakdown-table th {
  font-weight: 400;
  color: var(--text);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}
.bw-calc .breakdown-table td {
  color: var(--text-bright);
}
.bw-calc .breakdown-table .loss {
  color: var(--error);
}
.bw-calc .breakdown-table .gain {
  color: var(--accent);
}
.bw-calc .breakdown-table .note {
  font-size: 0.8rem;
  color: var(--text);
  opacity: 0.7;
}
.bw-calc .breakdown-table tr.subtotal td {
  border-top: 2px solid var(--border);
  font-weight: 500;
}
.bw-calc .breakdown-table tr.final-row td {
  border-top: 2px solid var(--border);
  font-weight: 600;
  background: var(--bg-lighter);
}
.bw-calc .breakdown-table .final {
  color: var(--accent);
  font-weight: 600;
}
.bw-calc .advanced-timing {
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.bw-calc .advanced-timing summary {
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--text);
}
.bw-calc .advanced-timing summary:hover {
  color: var(--text-bright);
}
.bw-calc .advanced-timing[open] summary {
  border-bottom: 1px solid var(--border);
}
.bw-calc .advanced-timing .inputs {
  padding: 1rem;
  margin-bottom: 0;
}
.bw-calc .advanced-note {
  padding: 0 1rem 1rem;
  font-size: 0.85rem;
  color: var(--text);
  opacity: 0.7;
  font-style: italic;
  margin: 0;
}
.bw-calc .advanced-intro {
  padding: 0.75rem 1rem 0;
  font-size: 0.85rem;
  color: var(--text);
  margin: 0;
}
.bw-calc .workload-presets {
  margin: 1rem 0;
  padding: 1rem;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-dim);
}
.bw-calc .workload-presets > label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.bw-calc .preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.bw-calc .preset-btn {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  font-family: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s ease;
}
.bw-calc .preset-btn:hover {
  background: var(--accent-dim);
  color: var(--bg);
  border-color: var(--accent);
}
.bw-calc .preset-btn:active {
  transform: scale(0.98);
}
.bw-calc .preset-applied {
  animation: preset-flash 0.5s ease;
}
@keyframes preset-flash {
  0% { background-color: var(--accent-dim); }
  100% { background-color: transparent; }
}
.bw-calc .input-error {
  border-color: var(--error) !important;
  box-shadow: 0 0 0 2px rgba(255, 68, 68, 0.2);
}
.bw-calc .validation-errors {
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid var(--error);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
}
.bw-calc .error-message {
  color: var(--error);
  margin: 0;
  font-size: 0.9rem;
}
.bw-calc .validation-warnings {
  background: rgba(255, 170, 0, 0.1);
  border: 1px solid var(--warning);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
}
.bw-calc .warning-message {
  color: var(--warning);
  margin: 0;
  font-size: 0.9rem;
}
.bw-calc .guidance-section {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--bg-lighter);
  border-radius: 4px;
  border-left: 3px solid var(--accent-dim);
}
.bw-calc .guidance-section h4 {
  margin: 0 0 0.75rem 0;
  color: var(--text-bright);
  font-size: 0.85rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.bw-calc .guidance-section .rating {
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
  font-weight: 500;
}
.bw-calc .guidance-section .rating.good {
  background: rgba(0, 255, 136, 0.15);
  color: var(--accent);
}
.bw-calc .guidance-section .rating.okay {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
}
.bw-calc .guidance-section .rating.warning {
  background: rgba(255, 170, 0, 0.15);
  color: var(--warning);
}
.bw-calc .guidance-section .rating.poor {
  background: rgba(255, 68, 68, 0.15);
  color: var(--error);
}
.bw-calc .guidance-tip {
  margin: 0.5rem 0;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.bw-calc .guidance-tip summary {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--accent);
}
.bw-calc .guidance-tip summary:hover {
  background: var(--bg-light);
}
.bw-calc .guidance-tip[open] summary {
  border-bottom: 1px solid var(--border);
}
.bw-calc .guidance-tip ul {
  margin: 0;
  padding: 0.75rem 1rem 0.75rem 2rem;
  font-size: 0.9rem;
}
.bw-calc .guidance-tip li {
  margin-bottom: 0.4rem;
  color: var(--text);
}
.bw-calc .input-group select {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text-bright);
  padding: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
  width: 100%;
  cursor: pointer;
}
.bw-calc .input-group select:focus {
  outline: none;
  border-color: var(--accent);
}
.bw-calc .input-group select option {
  background: var(--bg);
  color: var(--text-bright);
}
@media (max-width: 600px) {
.bw-calc .tabs {
    gap: 0.25rem;
  }
.bw-calc .tab {
    padding: 0.4rem 0.6rem;
    font-size: 0.75rem;
  }
.bw-calc .inputs {
    grid-template-columns: 1fr;
  }
.bw-calc .preset-selector {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
.bw-calc .preset-selector select {
    max-width: none;
  }
.bw-calc .mem-secondary {
    grid-template-columns: 1fr 1fr;
  }
.bw-calc .preset-buttons {
    gap: 0.3rem;
  }
.bw-calc .preset-btn {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
  }
}

/* Refinements: the calculators in the site's own voice (Nov 4 aesthetic loop). Tabs read like
   the site's tabs, headings are ink, labels are sentence case, fields and buttons are quiet. */
.bw-calc * { text-transform: none !important; letter-spacing: normal; }
.bw-calc .tabs { gap: 0 0.75rem; padding-bottom: 0; margin-bottom: 1.6rem; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
.bw-calc .tab {
  background: none; border: 0; border-radius: 0; padding: 0.4rem 0 0.55rem; margin-bottom: -1px; white-space: nowrap;
  color: var(--md-default-fg-color--light); font-size: 0.7rem; font-weight: 500;
}
.bw-calc .tab:hover { background: none; color: var(--md-default-fg-color); }
.bw-calc .tab.active { background: none; color: var(--md-default-fg-color); box-shadow: inset 0 -2px 0 var(--bw-signal); border: 0; }
.bw-calc .calculator h2 { color: var(--md-default-fg-color); font-size: 1rem; font-weight: 620; letter-spacing: -0.01em; margin-top: 0; }
.bw-calc .calculator h2::before { content: none; }
.bw-calc .description { opacity: 1; color: var(--md-default-fg-color--light); }
.bw-calc .input-group label { font-size: 0.7rem; color: var(--md-default-fg-color--light); }
.bw-calc .input-group input[type="number"], .bw-calc .input-group input[type="text"], .bw-calc .preset-selector select {
  font-family: var(--md-code-font-family); font-size: 0.8rem; height: 2rem; padding: 0 0.5rem;
  background: var(--md-default-bg-color); color: var(--md-default-fg-color);
  border: 1px solid var(--md-default-fg-color--lightest); border-radius: 0.2rem;
}
.bw-calc .input-group input:focus, .bw-calc .preset-selector select:focus { outline: 2px solid var(--bw-signal); outline-offset: 0; border-color: transparent; }
.bw-calc .results { background: none; border: 1px solid var(--md-default-fg-color--lightest); border-radius: 0.2rem; }
.bw-calc .results-header { font-size: 0.7rem; color: var(--md-default-fg-color--light); }
.bw-calc .result-value { font-family: var(--md-code-font-family); font-variant-numeric: tabular-nums; color: var(--md-default-fg-color); font-weight: 600; }
.bw-calc .result-warning, .bw-calc .advanced-note { background: none !important; border: 0; border-left: 2px solid var(--bw-amber); color: var(--md-typeset-color); border-radius: 0; }
.bw-calc .result-warning strong, .bw-calc .result-warning b { color: var(--bw-amber); }
.bw-calc .reset-btn, .bw-calc .copy-btn {
  background: none; border: 1px solid var(--md-default-fg-color--lightest); border-radius: 0.2rem;
  color: var(--md-default-fg-color--light); font-size: 0.65rem; padding: 0.25rem 0.6rem; box-shadow: none;
}
.bw-calc .reset-btn:hover, .bw-calc .copy-btn:hover { color: var(--md-default-fg-color); border-color: var(--md-default-fg-color--lighter); background: none; }
.bw-calc .formula { background: var(--md-code-bg-color); border-left: 0; border-radius: 0.2rem; }
/* Round 4: inputs in a calm 2-up grid, one rule style in the results, quiet section labels. */
@media screen and (min-width: 45em) { .bw-calc .inputs { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.bw-calc .results { border: 0; padding: 0; background: none; }
.bw-calc .result-row { border-bottom: 1px solid var(--md-default-fg-color--lightest); }
.bw-calc .results-header, .bw-calc .results-header * { font-size: 0.68rem; font-weight: 600; color: var(--md-default-fg-color--light); letter-spacing: 0 !important; }
.bw-calc .description { font-size: 0.8rem; }
/* Round 5: Reset and Copy are the same quiet text button. */
.bw-calc .reset-btn, .bw-calc .copy-btn { font-size: 0.65rem; font-weight: 500; color: var(--md-default-fg-color--light); letter-spacing: 0 !important; gap: 0; }
.bw-calc .copy-btn svg { display: none; }
/* The calculators keep a form's width on wide screens; fields do not stretch across the window. */
.bw-calc { max-width: 46rem; }