/* Shared Study Atlas / Program Trace palette. */
.memory-lab {
  --mint: #267765;
  --mint-pale: #eaf3ec;
  --coral-pale: #fbede6;
  --source-pale: #fce8e6;
  --target-pale: #ddebf7;
  --request-color: var(--blue-strong);
  --value-color: var(--mint);
  --time-cpu: #0072b2;
  --time-cache: #b36500;
  --time-ram: #7a5195;
  --muted: #627674;
  --mono: "Cascadia Code", "Consolas", "Hiragino Sans", "Meiryo", monospace;
  --serif: Georgia, "Yu Mincho", "Hiragino Mincho ProN", serif;
}
.lab-content-page {
  width: min(1440px, calc(100% - 40px));
  max-width: 1500px;
}
.memory-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 22px 0;
}
.memory-heading h1 {
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  margin: 6px 0;
}
.memory-heading p {
  margin: 0;
  color: var(--ink-soft);
}
.eyebrow {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  color: var(--coral-strong);
}
.lab-content-page button,
.lab-content-page input,
.lab-content-page select {
  font: inherit;
}
.lab-content-page button {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 36px;
}
.lab-content-page button:hover:not(:disabled) {
  border-color: var(--ink-soft);
  background: var(--paper);
}
.lab-content-page button:disabled {
  opacity: 0.4;
  cursor: default;
}
.lab-content-page :is(input, select) {
  min-width: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  padding: 7px 10px;
}
.lab-content-page :focus-visible {
  outline: 3px solid var(--mint-strong);
  outline-offset: 2px;
}
.experiment-setup > summary {
  display: none;
}
.memory-document-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.experiment-name {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  font-size: 0.73rem;
}
.experiment-name span {
  flex-shrink: 0;
  color: var(--ink-soft);
}
.experiment-name input {
  width: 100%;
  min-height: 34px;
}
.file-actions {
  display: flex;
  flex-wrap: wrap;
  max-width: 100%;
  gap: 6px;
  flex-shrink: 0;
}
.file-actions button {
  font-size: 0.73rem;
  padding: 6px 16px;
  min-height: 34px;
}
.experiment-hint {
  font-size: 0.74rem;
  color: var(--ink-soft);
  margin: 0 0 14px;
  line-height: 1.7;
}
/* Same control sizing, spacing and numeric speed control as Program Trace. */
.control-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
}
.action-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.lab-content-page .button {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
  transition:
    background 0.15s,
    border-color 0.15s;
}
.lab-content-page .button-primary {
  padding-right: 21px;
  padding-left: 18px;
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.lab-content-page .button-primary:hover:not(:disabled) {
  background: #1d4950;
  border-color: #1d4950;
}
.button-icon {
  font-size: 1.2rem;
  line-height: 1;
}
.button svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}
.lab-content-page .button-auto {
  color: var(--mint);
  border-color: #b5cec0;
}
.lab-content-page .button-auto:hover:not(:disabled),
.lab-content-page .button-auto.is-running {
  background: var(--mint-pale);
  border-color: var(--mint);
}
.state-badge {
  font-size: 0.7rem;
  color: var(--muted);
  white-space: nowrap;
}
.state-badge.running {
  color: var(--mint);
}
.speed-control {
  position: relative;
  display: flex;
}
.speed-button > span {
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}
.speed-button[aria-expanded="true"] {
  border-color: var(--mint);
  background: var(--mint-pale);
}
.speed-panel {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  z-index: 20;
  width: 270px;
  max-width: calc(100vw - 40px);
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 10px 30px rgb(16 47 53 / 12%);
}
.speed-title {
  margin: 0 0 11px;
  font-size: 0.76rem;
  font-weight: 700;
}
.speed-adjustment {
  display: flex;
  align-items: center;
  gap: 9px;
}
.lab-content-page .speed-adjust-button {
  flex: 0 0 40px;
  min-height: 40px;
  padding: 5px;
  color: var(--mint);
  font-size: 1.2rem;
}
.speed-input-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.72rem;
}
.lab-content-page #speed-input {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.speed-input-wrap:has([aria-invalid="true"]) {
  border-color: var(--coral-strong);
}
.speed-error {
  margin: 10px 0 0;
  font-size: 0.66rem;
  color: var(--coral-strong);
}
[hidden] {
  display: none !important;
}
#notice {
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin: 10px 2px 14px;
  min-height: 1.5em;
}
#notice.error {
  color: var(--coral-strong);
  font-weight: 700;
}
#current-command.is-executing {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  background: var(--mint-pale);
}
.memory-workspace {
  position: relative;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(280px, 1.1fr) minmax(
      240px,
      0.9fr
    );
  gap: 36px;
  align-items: stretch;
  padding: 12px 12px 0;
}
.panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  min-width: 0;
  overflow: hidden;
}
.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 14px 15px;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}
.panel-heading > div {
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-heading h2 {
  font-size: 0.98rem;
  margin: 0;
}
.panel-heading h2 small {
  font-size: 0.7rem;
  color: var(--muted);
}
.panel-index {
  font:
    italic 0.85rem Georgia,
    serif;
  color: var(--coral-strong);
}
.tiny-label {
  font-size: 0.6rem;
  color: var(--muted);
}
.cpu-value {
  margin: 15px;
  background: var(--ink);
  color: var(--white);
  padding: 17px;
  border-radius: 8px;
}
.cpu-value span {
  font-size: 0.7rem;
  display: block;
}
.cpu-value strong {
  font: 500 clamp(1.9rem, 3vw, 3rem)/1.2 var(--mono);
  display: block;
  margin-top: 10px;
  overflow-wrap: anywhere;
}
.cpu-registers {
  margin: 0 16px;
}
.cpu-registers > div {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.cpu-registers dt {
  font-size: 0.66rem;
  color: var(--muted);
}
.cpu-registers dd {
  margin: 4px 0 0;
  font-size: 1.05rem;
  font-weight: 700;
}
#current-command {
  font-size: 0.83rem;
  min-height: 2em;
}
.timing-settings {
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  font-size: 0.73rem;
}
.timing-settings summary {
  cursor: pointer;
  font-weight: 700;
}
.timing-settings label {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  font-size: 0.65rem;
}
.timing-settings input {
  margin-left: auto;
  width: 75px;
}
.ram-legend {
  display: flex;
  gap: 12px;
  padding: 10px 12px;
  font-size: 0.59rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.ram-legend span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.ram-legend i {
  height: 8px;
  width: 8px;
  border-radius: 2px;
}
.legend-next {
  background: var(--target-pale);
  border: 1px solid var(--blue-strong);
}
.legend-current {
  background: var(--mint-pale);
  border: 1px solid var(--mint);
}
.legend-access {
  background: var(--source-pale);
  border: 1px solid #e5b3aa;
}
.legend-write {
  background: #cee6d5;
  border: 1px solid var(--mint);
}
.ram-scroll {
  height: 452px;
  overflow: auto;
  scrollbar-width: thin;
}
.ram-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.73rem;
  table-layout: fixed;
}
.ram-table th {
  font-size: 0.59rem;
  color: var(--muted);
  text-align: left;
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 8px 5px;
  font-weight: 600;
}
.ram-table th:nth-child(1) {
  width: 44px;
}
.ram-table td {
  border-bottom: 1px solid var(--line);
  padding: 5px;
  vertical-align: middle;
  height: 45px;
}
.ram-table tr:nth-child(4n + 3),
.ram-table tr:nth-child(4n + 4) {
  background: var(--paper);
}
.ram-table tr:nth-child(even) td {
  border-bottom-color: #bfc6bc;
}
.ram-table th[scope="row"] {
  position: static;
  background: transparent;
  font: 600 0.78rem var(--mono);
  color: var(--muted);
  vertical-align: middle;
}
.ram-table .live-cell {
  font-size: 0.78rem;
  overflow-wrap: anywhere;
  padding: 0;
}
.ram-table tbody tr {
  cursor: pointer;
}
.ram-table tbody tr:hover {
  outline: 1px solid var(--mint);
  outline-offset: -1px;
}
.lab-content-page .ram-row-edit {
  display: block;
  width: 100%;
  min-height: 42px;
  padding: 8px 12px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
}
.lab-content-page .ram-row-edit:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: -3px;
}
.ram-edit-dialog {
  width: min(540px, calc(100% - 32px));
}
#ram-edit-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.ram-edit-dialog .builder-field {
  display: grid;
  gap: 7px;
  align-content: start;
}
.ram-edit-dialog .builder-field label {
  font-weight: 700;
}
.ram-edit-dialog input,
.ram-edit-dialog select {
  width: 100%;
  min-height: 44px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
}
.ram-edit-dialog :is(input, select):focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 2px;
}
.ram-edit-preview {
  padding: 12px;
  border-radius: 8px;
  background: var(--paper);
  font-weight: 700;
}
.cache-request-panel {
  position: relative;
  margin: 10px 14px;
  padding: 8px 22px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
}
.cache-request-content {
  min-width: 0;
}
.cache-request {
  margin: 0;
  color: var(--ink);
  font-size: 0.7rem;
  overflow-wrap: anywhere;
}
.cache-outcome {
  font-weight: 800;
}
.cache-outcome.is-hit {
  color: var(--mint);
}
.cache-outcome.is-miss {
  color: var(--coral-strong);
}
.cache-request-port {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  border: 1px solid var(--request-color);
  border-radius: 50%;
  background: var(--white);
}
.cache-ram-port {
  left: auto;
  right: 0;
}
.cache-request-port.transfer-target {
  position: absolute;
  padding: 0 !important;
  outline: none;
  box-shadow: none;
}

.transfer-path.transfer-request {
  stroke-dasharray: 6 4;
}
.ram-table tr.next,
.ram-table tr.targeted {
  box-shadow: inset 3px 0 var(--blue-strong);
  background: var(--target-pale);
}
.ram-table tr.next > *,
.ram-table tr.targeted > * {
  background: var(--target-pale);
}
.ram-table tr.current > * {
  background: var(--mint-pale);
}
.ram-table tr.accessed > * {
  background: var(--source-pale);
}
.ram-table tr.write-target > * {
  background: #cee6d5;
}
.ram-table tr.current {
  background: var(--mint-pale);
  box-shadow: inset 3px 0 var(--mint);
}
.ram-table tr.current th {
  color: var(--mint);
}
.ram-table tr.accessed {
  background: var(--source-pale);
  box-shadow: inset -3px 0 var(--coral-strong);
}
.ram-table tr.write-target {
  background: #cee6d5;
  box-shadow: inset -3px 0 var(--mint);
}
.ram-table tr.written .live-cell {
  font-weight: 800;
  color: var(--mint);
}
.ram-note {
  padding: 10px 12px;
  font-size: 0.62rem;
  color: var(--muted);
  margin: 0;
  border-top: 1px solid var(--line);
}
.switch {
  font-size: 0.73rem;
  display: flex;
  gap: 5px;
  align-items: center;
}
.switch input {
  accent-color: var(--mint);
  width: 17px;
  height: 17px;
}
.cache-controls {
  padding: 12px 14px 8px;
}
.cache-controls label {
  font-size: 0.65rem;
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.cache-controls select {
  font-size: 0.7rem;
  max-width: 150px;
}
.cache-policy {
  display: flex;
  gap: 6px;
  margin: 0 14px;
  flex-wrap: wrap;
}
.cache-policy span {
  font-size: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 2px 7px;
  color: var(--muted);
}
.small-note {
  font-size: 0.7rem;
  line-height: 1.7;
  color: var(--muted);
}
.cache-panel > .small-note {
  margin: 10px 14px 6px;
  font-size: 0.63rem;
}
#cache-lines {
  margin: 0 14px;
  display: grid;
  gap: 6px;
  max-height: 240px;
  overflow: auto;
}
.cache-line {
  min-height: 76px;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}
.cache-line header {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  background: var(--paper);
  font-size: 0.59rem;
  padding: 5px 8px;
}
.cache-line.active {
  border-color: var(--mint);
}
.cache-line.active header {
  background: var(--mint-pale);
}
.cache-cells {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.cache-cells > div {
  padding: 7px 8px;
  min-height: 39px;
  font-size: 0.64rem;
  overflow-wrap: anywhere;
}
.cache-cells > div + div {
  border-left: 1px solid var(--line);
}
.cache-cells small {
  display: block;
  color: var(--muted);
  font-size: 0.55rem;
}
.cache-empty {
  min-height: 76px;
  display: flex;
  align-items: center;
  border: 1px dashed var(--line);
  border-radius: 7px;
  padding: 10px;
  font-size: 0.65rem;
  color: var(--muted);
}
.access-heading {
  margin: 17px 14px 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 5px;
  flex-wrap: wrap;
}
.access-heading h3 {
  font-size: 0.72rem;
  margin: 0;
}
.access-heading > span {
  font-size: 0.54rem;
  color: var(--muted);
}
#access-events {
  margin: 0 14px;
}
.lab-content-page .access-event {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 7px;
  margin: 5px 0;
  padding: 6px 8px;
  font-size: 0.65rem;
  min-height: 32px;
}
.access-event[aria-pressed="true"] {
  border-color: var(--mint);
  background: var(--mint-pale);
}
.access-event b {
  font-size: 0.55rem;
  margin-left: auto;
  border-radius: 4px;
  padding: 2px 5px;
  background: var(--mint-pale);
  color: var(--mint);
}
.access-event b.miss {
  background: var(--coral-pale);
  color: var(--coral-strong);
}
.access-event small {
  font-size: 0.58rem;
  color: var(--muted);
}
.access-reason {
  font-size: 0.68rem;
  color: var(--ink-soft);
  margin: 10px 14px 14px;
  line-height: 1.7;
}
.access-reason > p {
  font-size: 0.64rem;
  margin: 8px 0 0;
}
.transfer-steps {
  margin: 8px 0;
  padding-left: 18px;
  font-size: 0.65rem;
}
.transfer-steps li {
  padding: 3px 0;
}
.flow-request {
  color: var(--request-color);
}
.flow-value {
  color: var(--value-color);
}
.transfer-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 10px 14px;
  color: var(--ink-soft);
  font-size: 0.62rem;
}
.transfer-legend > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.transfer-legend i {
  position: relative;
  width: 27px;
  height: 0;
  border-top: 2px solid;
}
.transfer-legend i::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  border-left: 5px solid;
  border-top: 3px solid transparent;
  border-bottom: 3px solid transparent;
}
.legend-request {
  color: var(--request-color);
  border-top-style: dashed !important;
}
.legend-value {
  color: var(--value-color);
}
.empty-note {
  font-size: 0.73rem;
  color: var(--muted);
  padding: 12px 0;
  line-height: 1.7;
}
.memory-transfers {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
  overflow: visible;
}
.transfer-path {
  fill: none;
  stroke-width: 2;
  opacity: 0.9;
}
.transfer-request {
  stroke: var(--request-color);
}
.transfer-value {
  stroke: var(--value-color);
}
.arrow-request {
  fill: var(--request-color);
}
.arrow-value {
  fill: var(--value-color);
}
.transfer-number-bg {
  fill: var(--white);
  stroke-width: 1.5;
}
.transfer-number {
  fill: var(--ink);
  font: 700 9px sans-serif;
}
.measurement-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 18px;
  margin: 16px 0;
  background: var(--white);
}
.measurement-title {
  display: flex;
  gap: 10px;
  align-items: center;
}
.measurement-title h2 {
  font-size: 0.77rem;
  margin: 0;
}
.measurement-title > span {
  font-size: 0.59rem;
  color: var(--muted);
}
.metrics {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1fr;
  gap: 15px;
  margin: 10px 0;
}
.metrics > div {
  border-left: 1px solid var(--line);
  padding-left: 18px;
}
.metrics > div:first-child {
  border: 0;
  padding: 0;
}
.metrics span {
  display: block;
  font-size: 0.65rem;
  color: var(--muted);
}
.metrics strong {
  font: 600 1.5rem var(--mono);
  color: var(--ink);
}
.metrics small {
  font: 0.64rem sans-serif;
  margin-left: 4px;
}
.time-track {
  height: 12px;
  display: flex;
  background: var(--paper-deep);
  border-radius: 5px;
  overflow: hidden;
}
.time-track > span {
  flex: 0 0 auto;
  min-width: 0;
}
.time-track > span + span {
  box-shadow: inset 1px 0 rgb(255 255 255 / 90%);
}
.time-cpu {
  background-color: var(--time-cpu);
}
.time-cache {
  background-color: var(--time-cache);
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0 4px,
    rgb(255 255 255 / 65%) 4px 6px
  );
}
.time-ram {
  background-color: var(--time-ram);
  background-image: radial-gradient(
    circle,
    rgb(255 255 255 / 80%) 1px,
    transparent 1.4px
  );
  background-size: 6px 6px;
}
.time-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  padding: 0;
  margin: 9px 0 0;
  list-style: none;
  color: var(--ink);
  font-size: 0.7rem;
  line-height: 1.5;
}
.time-legend li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.time-key {
  flex: 0 0 20px;
  height: 12px;
  border: 1px solid #43535b;
  border-radius: 2px;
}
.time-legend strong {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.is-fullscreen .time-legend {
  margin-top: 5px;
  gap: 3px 16px;
  font-size: 0.65rem;
}
.is-fullscreen .time-key {
  height: 10px;
}
.measurement-panel > p {
  font-size: 0.63rem;
  margin: 7px 0 0;
  color: var(--muted);
}
.memory-records {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}
.memory-records > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  cursor: pointer;
  font-size: 0.77rem;
  font-weight: 700;
  list-style: none;
}
.memory-records > summary::-webkit-details-marker {
  display: none;
}
.memory-records > summary::before {
  content: "▸";
}
.memory-records[open] > summary::before {
  transform: rotate(90deg);
}
#record-count {
  margin-left: auto;
  font-size: 0.65rem;
  color: var(--muted);
  font-weight: 400;
}
.comparison-panel {
  margin: 0 0 25px;
  padding-top: 8px;
}
.comparison-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
}
.comparison-heading h2 {
  font-size: 1.25rem;
  margin: 3px 0;
}
.comparison-heading .eyebrow {
  margin: 0;
}
.comparison-heading > div:last-child {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.comparison-scroll {
  overflow: auto;
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  white-space: nowrap;
  font-size: 0.7rem;
}
.comparison-table th {
  text-align: left;
  color: var(--muted);
  font-size: 0.59rem;
  padding: 10px 9px;
  background: var(--paper);
}
.comparison-table td {
  padding: 12px 9px;
  border-bottom: 1px solid var(--line);
}
.comparison-table td:first-child {
  white-space: normal;
  min-width: 160px;
  max-width: 220px;
}
.comparison-table small {
  display: block;
  color: var(--muted);
  font-size: 0.6rem;
}
.comparison-table .different {
  color: var(--coral-strong);
}
.comparison-table button {
  font-size: 0.64rem;
  padding: 5px 8px;
}
.guide-panel {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 14px;
  padding: 20px;
  font-size: 0.8rem;
  margin: 15px 0;
}
.guide-panel h2 {
  font-size: 1rem;
}
#instruction-guide {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
#instruction-guide > div {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 10px;
  border-radius: 7px;
  font-size: 0.72rem;
}
#instruction-guide small {
  display: block;
  color: var(--muted);
  margin-top: 4px;
}
.model-notes {
  font-size: 0.75rem;
  line-height: 1.9;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}
.model-notes summary {
  cursor: pointer;
  font-weight: 700;
}
.model-notes .timing-table-title {
  margin: 16px 0 6px;
  font-size: 0.9rem;
  line-height: 1.5;
}
.model-notes .timing-table-wrap {
  max-width: 560px;
  overflow-x: auto;
  margin: 8px 0 12px;
}
.model-notes .timing-table {
  width: 100%;
  border-collapse: collapse;
  line-height: 1.6;
  text-align: left;
}
.model-notes .timing-table th,
.model-notes .timing-table td {
  padding: 9px 12px;
  border: 1px solid var(--line);
  vertical-align: top;
}
.model-notes .timing-table thead th {
  background: var(--paper, #f4f7f6);
}
.model-notes .timing-table tbody th {
  font-weight: 600;
  width: 34%;
}
.lab-back {
  display: inline-block;
  margin: 24px 0;
  font-size: 0.8rem;
  color: var(--mint-strong);
}
.visually-hidden {
  position: absolute !important;
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.fullscreen-sidebar {
  display: none;
}
/* Document menus mirror the logic-circuit Lab. Dialogs stay in the top layer. */
.memory-dialog {
  width: min(600px, calc(100% - 32px));
  max-height: 90dvh;
  overflow: auto;
  margin: auto;
  padding: 24px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--white);
  box-shadow: 0 24px 100px rgb(16 47 53 / 25%);
  font-size: 0.8rem;
}
.memory-dialog::backdrop {
  background: rgb(16 47 53 / 45%);
  backdrop-filter: blur(3px);
}
.memory-dialog .document-dialog-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 20px;
}
.memory-dialog h2 {
  font:
    600 1.5rem Georgia,
    "Yu Mincho",
    serif;
  margin: 0;
}
.memory-dialog button {
  font: inherit;
  cursor: pointer;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  min-height: 36px;
}
.memory-dialog button:hover {
  border-color: var(--ink-soft);
  background: var(--paper);
}
.memory-dialog button:focus-visible,
.memory-dialog input:focus-visible,
.memory-dialog textarea:focus-visible {
  outline: 3px solid var(--mint-strong);
  outline-offset: 2px;
}
.memory-dialog .document-close {
  font-size: 1.4rem;
  line-height: 1;
  padding: 0;
  width: 34px;
  min-height: 34px;
  border-radius: 50%;
}
.document-field {
  display: grid;
  gap: 7px;
  font-size: 0.73rem;
}
.document-field input,
.document-field textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font: inherit;
  color: var(--ink);
  background: var(--white);
}
.document-field textarea {
  min-height: 90px;
  resize: vertical;
  overflow-wrap: anywhere;
  line-height: 1.7;
}
.document-url-load {
  margin-top: 18px;
  font-size: 0.75rem;
}
.document-url-load summary {
  cursor: pointer;
  padding: 8px 0;
}
.document-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin: 18px 0;
  flex-wrap: wrap;
}
.memory-dialog .document-primary {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}
.document-file-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding-top: 15px;
  margin-top: 15px;
  font-size: 0.73rem;
}
.document-error {
  color: var(--coral-strong);
  font-size: 0.75rem;
  line-height: 1.8;
}
.document-description,
.document-help {
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 0.75rem;
}
.document-section-title {
  font-size: 0.85rem;
  margin: 24px 0 10px;
}
.program-example-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.program-example-list button {
  text-align: left;
  display: grid;
  gap: 5px;
}
.program-example-list small {
  color: var(--ink-soft);
  line-height: 1.7;
  font-size: 0.67rem;
}
.saved-program {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.saved-program small {
  display: block;
  color: var(--ink-soft);
  font-size: 0.65rem;
  margin-top: 4px;
}
.saved-program > div:last-child {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
/* Trace-style rail: all vertical space goes to the three working panels. */
html.memory-fullscreen,
html.memory-fullscreen body {
  overflow: hidden;
  overscroll-behavior: none;
  scrollbar-gutter: auto;
}
.memory-lab.is-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  margin: 0;
  padding: max(6px, env(safe-area-inset-top))
    max(6px, env(safe-area-inset-right)) max(6px, env(safe-area-inset-bottom))
    max(6px, env(safe-area-inset-left));
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 7px;
  background: var(--paper);
}
.is-fullscreen .experiment-setup,
.is-fullscreen .execution-bar {
  display: none;
}
.is-fullscreen .fullscreen-sidebar {
  grid-column: 1;
  grid-row: 1/-1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  min-height: 0;
  overflow: auto;
  scrollbar-width: none;
}
.lab-content-page .fullscreen-action {
  display: grid;
  place-items: center;
  flex: 0 0 40px;
  width: 44px;
  min-height: 32px;
  max-height: 48px;
  padding: 0;
  border-radius: 8px;
  background: var(--white);
  font: 600 1.4rem/1 sans-serif;
}
.lab-content-page .fullscreen-next {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}
.lab-content-page .fullscreen-exit {
  position: sticky;
  top: 0;
  z-index: 2;
  border-color: #d7a899;
  background: var(--coral-pale);
  color: var(--coral-strong);
  font-size: 1.8rem;
}
.lab-content-page .fullscreen-text {
  font-size: 0.63rem;
  font-weight: 700;
}
.fullscreen-action[aria-pressed="true"],
.fullscreen-action[aria-expanded="true"] {
  border-color: var(--mint);
  background: var(--mint-pale);
}
.is-fullscreen .memory-workspace {
  grid-column: 2;
  grid-row: 1;
  min-height: 0;
  height: 100%;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(260px, 1.1fr) minmax(
      230px,
      0.9fr
    );
  grid-template-rows: minmax(0, 1fr);
  align-items: stretch;
  gap: 30px;
  overflow: auto;
  padding-top: 12px;
}
.is-fullscreen .panel {
  width: 100%;
  min-height: 0;
  min-width: 0;
  grid-column: auto;
  border-radius: 8px;
}
.is-fullscreen .cpu-panel,
.is-fullscreen .cache-panel {
  display: block;
  height: 100%;
  overflow: auto;
  scrollbar-width: thin;
  overscroll-behavior: contain;
}
.is-fullscreen .panel-heading {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 9px 11px;
  min-height: 38px;
}
.is-fullscreen .panel-heading h2 {
  font-size: 0.85rem;
}
.is-fullscreen .tiny-label {
  display: none;
}
.is-fullscreen .cpu-value {
  margin: 10px;
  padding: 12px;
}
.is-fullscreen .cpu-value strong {
  font-size: 2rem;
  margin-top: 5px;
}
.is-fullscreen .cpu-registers {
  margin: 0 12px;
}
.is-fullscreen .cpu-registers > div {
  padding: 7px 0;
}
.is-fullscreen .cpu-registers dd {
  font-size: 0.9rem;
}
.is-fullscreen #current-command {
  font-size: 0.78rem;
  min-height: 2em;
}
.is-fullscreen .ram-panel {
  display: flex;
  flex-direction: column;
}
.is-fullscreen .ram-panel .panel-heading,
.is-fullscreen .ram-legend {
  flex-shrink: 0;
}
.is-fullscreen .ram-scroll {
  flex: 1;
  height: auto;
  min-height: 0;
}
.is-fullscreen .ram-legend {
  padding: 6px 10px;
}
.is-fullscreen .ram-note {
  display: none;
}
.is-fullscreen #cache-lines {
  grid-template-columns: 1fr;
  max-height: none;
  overflow: visible;
}
.is-fullscreen .cache-controls {
  padding: 9px 11px;
}
.is-fullscreen .measurement-panel {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  padding: 5px 10px;
  border-radius: 8px;
}
.is-fullscreen .measurement-title {
  display: none;
}
.is-fullscreen .metrics {
  grid-template-columns: 1.3fr 1fr 1fr 1fr 1fr;
  margin: 0;
  gap: 10px;
}
.is-fullscreen .metrics strong {
  font-size: 1.15rem;
}
.is-fullscreen .metrics > div {
  padding-left: 10px;
}
.is-fullscreen .metrics span {
  font-size: 0.58rem;
}
.is-fullscreen .time-track {
  height: 9px;
  margin-top: 5px;
}
.is-fullscreen #access-summary {
  display: none;
}
.is-fullscreen #notice {
  position: absolute;
  bottom: 70px;
  left: 58px;
  right: 10px;
  z-index: 6;
  display: none;
  max-height: 30%;
  overflow: auto;
  margin: 0;
  padding: 10px;
  background: var(--coral-pale);
  border: 1px solid var(--coral-strong);
  border-radius: 8px;
}
.is-fullscreen #notice.error {
  display: block;
}
.is-fullscreen #notice:not(.error) {
  display: block;
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  min-height: 0;
  overflow: hidden;
  padding: 0;
  border: 0;
}
.is-fullscreen > .speed-panel {
  position: absolute;
  top: 6px;
  left: 58px;
  right: auto;
  max-height: calc(100% - 12px);
  overflow: auto;
}
.is-fullscreen .memory-records {
  position: absolute;
  bottom: 65px;
  left: 58px;
  right: 8px;
  margin: 0;
  border: 0;
  z-index: 5;
}
.is-fullscreen .memory-records > summary {
  display: none;
}
.is-fullscreen .records-content {
  max-height: 70dvh;
  overflow: auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--shadow);
}
.is-fullscreen .comparison-panel {
  margin: 0;
  padding: 0;
}
.is-fullscreen .comparison-heading h2 {
  font-size: 1rem;
}
@media (max-width: 1100px) {
  .memory-workspace {
    grid-template-columns: minmax(210px, 1fr) minmax(240px, 1.1fr) minmax(
        215px,
        0.9fr
      );
    gap: 28px;
  }
  .tiny-label {
    display: none;
  }
  .ram-table th:nth-child(1) {
    width: 32px;
  }
}
@media (max-width: 980px) {
  .is-fullscreen .memory-workspace {
    grid-template-columns: minmax(180px, 1fr) minmax(220px, 1.1fr) minmax(
        200px,
        0.9fr
      );
    gap: 24px;
  }
  .control-panel {
    padding: 12px;
    gap: 12px;
  }
}
@media (min-width: 701px) and (max-width: 900px) {
  .memory-workspace {
    grid-template-columns: minmax(180px, 1fr) minmax(210px, 1.1fr) minmax(
        190px,
        0.9fr
      );
    gap: 24px;
  }
}
@media (max-width: 700px) {
  .lab-content-page {
    width: calc(100% - 24px);
  }
  .memory-heading {
    display: block;
    margin: 15px 0;
  }
  .memory-heading h1 {
    font-size: 1.8rem;
  }
  .memory-heading > div > p:last-child {
    font-size: 0.74rem;
  }
  .memory-heading > button {
    margin-top: 12px;
  }
  .memory-document-bar {
    flex-wrap: wrap;
    gap: 8px;
  }
  .experiment-name {
    flex-basis: 100%;
  }
  .file-actions {
    margin-left: auto;
  }
  .control-panel {
    align-items: start;
  }
  .lab-content-page .button {
    padding: 8px 10px;
    min-height: 40px;
  }
  .action-buttons {
    gap: 6px;
  }
  .memory-workspace {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .panel {
    width: 100%;
  }
  .cpu-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .cpu-panel .panel-heading,
  .cpu-panel .timing-settings {
    grid-column: 1/-1;
  }
  .cpu-value {
    margin: 12px;
    align-self: start;
  }
  .cpu-registers {
    margin: 5px 12px 5px 0;
  }
  .cpu-registers > div {
    padding: 6px 0;
  }
  .ram-scroll {
    height: 390px;
  }
  .ram-table .live-cell {
    font-size: 0.61rem;
  }
  .comparison-heading {
    flex-direction: column;
    align-items: start;
  }
  .metrics {
    gap: 8px;
  }
  .metrics > div {
    padding-left: 8px;
  }
  .metrics strong {
    font-size: 1.15rem;
  }
  .metrics span {
    font-size: 0.58rem;
  }
  #instruction-guide {
    grid-template-columns: repeat(2, 1fr);
  }
  .memory-dialog {
    padding: 18px;
  }
  .program-example-list {
    grid-template-columns: 1fr;
  }
  .memory-lab.is-fullscreen {
    grid-template-columns: 40px minmax(0, 1fr);
    padding: 4px;
    gap: 5px;
  }
  .lab-content-page .fullscreen-action {
    width: 40px;
    flex-basis: 36px;
  }
  .is-fullscreen .memory-workspace {
    grid-template-columns: minmax(115px, 0.85fr) minmax(135px, 1.15fr);
    grid-template-rows: minmax(145px, 0.8fr) minmax(200px, 1.2fr);
    gap: 22px;
  }
  .is-fullscreen .ram-panel {
    grid-column: 1/-1;
  }
  .is-fullscreen .panel-heading {
    padding: 7px 8px;
    min-height: 34px;
  }
  .is-fullscreen .panel-heading h2 {
    font-size: 0.76rem;
  }
  .is-fullscreen .cpu-value {
    margin: 8px;
    padding: 8px;
  }
  .is-fullscreen .cpu-value strong {
    font-size: 1.6rem;
  }
  .is-fullscreen .cache-policy {
    margin: 0 8px;
  }
  .is-fullscreen #cache-lines,
  .is-fullscreen #access-events {
    margin-left: 8px;
    margin-right: 8px;
  }
  .is-fullscreen .cache-controls {
    padding: 8px;
  }
  .is-fullscreen .cache-controls select {
    max-width: 100%;
  }
  .is-fullscreen .access-event {
    flex-wrap: wrap;
  }
  .is-fullscreen .metrics {
    gap: 5px;
  }
  .is-fullscreen .metrics > div {
    padding-left: 5px;
  }
  .is-fullscreen .metrics strong {
    font-size: 0.9rem;
  }
  .is-fullscreen .metrics span {
    font-size: 0.5rem;
  }
  .is-fullscreen > .speed-panel,
  .is-fullscreen #notice,
  .is-fullscreen .memory-records {
    left: 49px;
  }
  .is-fullscreen .measurement-panel {
    padding: 5px 7px;
  }
}
.is-fullscreen .panel-index,
.is-fullscreen .cache-policy,
.is-fullscreen .access-heading > span {
  display: none;
}
.metrics strong {
  overflow-wrap: anywhere;
}
@media (max-width: 700px) {
  .is-fullscreen .memory-workspace {
    grid-template-columns: minmax(110px, 0.85fr) minmax(130px, 1.15fr);
  }
}
#received-field {
  background: var(--mint-pale);
  padding: 8px;
  border-radius: 7px;
}
#received-value {
  min-height: 1.4em;
}
.ram-table tr.requested {
  outline: 2px dashed var(--blue-strong);
  outline-offset: -2px;
}
.transfer-source {
  outline: 1px dashed var(--transfer-color);
  outline-offset: -1px;
}
.transfer-target {
  position: relative;
  outline: 3px solid var(--transfer-color);
  outline-offset: -3px;
  box-shadow: inset 0 0 0 5px var(--white);
  padding-left: 14px !important;
}
.transfer-halo {
  fill: none;
  stroke: var(--white);
  stroke-width: 7;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.transfer-path {
  stroke-width: 2.8;
  stroke-linejoin: round;
}
.transfer-endpoint {
  fill: none;
  stroke-width: 2.5;
}
.transfer-origin {
  stroke: var(--white);
  stroke-width: 1.5;
}

@media (max-width: 450px) {
  #ram-edit-fields {
    grid-template-columns: 1fr;
  }
}