/* Python Lab: program output (console, values, charts, variables), the inputs box, and the tracer, slicing and branches labs. */

/* ---------------------------------------------------------------- console & output */
.console {
  margin: 0;
  padding: 10px 14px;
  direction: ltr;
  text-align: left;
  overflow: auto;
  max-height: 360px;
  background: var(--code-surface);
  color: var(--syn-variable);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  unicode-bidi: plaintext;
}

.console-wrap {
  border-top: 1px solid var(--rule);
}

.console-value {
  max-height: 200px;
  color: var(--accent);
}

.output-pane {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.result-status.is-bad {
  color: var(--bad);
}

.display-value {
  border-top: 1px solid var(--rule);
}

.display-label {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px 0;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--ink-3);
}

.display-label svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.display-value .result-table-wrap {
  margin: 6px 0 0;
  border-top: 0;
}

.figures {
  display: grid;
  gap: var(--s-2);
  padding: 12px 14px;
  border-top: 1px solid var(--rule);
  background: var(--surface);
}

.figure {
  display: block;
  max-width: 100%;
  height: auto;
  margin-inline: auto;
  border-radius: var(--r-sm);
}

.py-warnings {
  display: grid;
  gap: 4px;
  padding: 8px 14px;
  border-top: 1px solid var(--rule);
  background: var(--warn-soft);
  font-size: var(--fs-xs);
}

.py-warning {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  color: var(--ink-2);
}

.py-warning svg {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  margin-top: 3px;
  fill: none;
  stroke: var(--warn);
  stroke-width: 2;
}

.error-raw-wrap summary {
  cursor: pointer;
  font-size: var(--fs-xs);
  color: var(--ink-3);
}

.error-raw-wrap .error-raw {
  margin: 6px 0 0;
  white-space: pre-wrap;
}

.vars-table .var-name {
  font-weight: 600;
  color: var(--accent);
}

.vars-table .var-type {
  color: var(--ink-3);
  font-size: 0.78rem;
}

.vars-table .var-value {
  white-space: pre-wrap;
  max-width: 520px;
}

.result-waiting {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--rule);
  color: var(--ink-2);
  font-size: var(--fs-sm);
}

.spinner {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border: 2px solid var(--rule-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.demo-preview {
  border-top: 1px solid var(--rule);
}

.demo-preview .console {
  color: var(--ink-2);
}

/* The line an error points at, in the editor. */
.cm-error-line {
  background: color-mix(in srgb, var(--bad) 16%, transparent);
  box-shadow: inset 3px 0 0 var(--bad);
}

/* ---------------------------------------------------------------- inputs box */
.inputs-box {
  display: grid;
  gap: 4px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-2);
}

.inputs-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--ink-2);
}

.inputs-label svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.inputs-field {
  width: 100%;
  min-height: 38px;
  padding: 6px 10px;
  resize: vertical;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-sm);
  background: var(--code-surface);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.5;
}

.quiz-output {
  margin-top: var(--s-2);
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--surface);
}

/* ---------------------------------------------------------------- data files */
.schema-table-name {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--ink);
  cursor: pointer;
}

.schema-table-name svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--teal);
  stroke-width: 1.8;
}

.schema-table-name:hover {
  color: var(--accent);
}

.dataset-body {
  display: grid;
  gap: var(--s-3);
  padding: 10px 12px 12px;
  border-top: 1px solid var(--rule);
}

.dataset-body > .md {
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

.dataset-body .schema-columns {
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
}

.dataset-code {
  display: grid;
  gap: 4px;
}

.dataset-code .code-static {
  font-size: 0.8rem;
  padding: 8px 10px;
}

/* ---------------------------------------------------------------- lab code lines */
.lab-lines {
  margin: 0;
  padding: 6px 0;
  list-style: none;
  direction: ltr;
  text-align: left;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  background: var(--code-surface);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.7;
}

.lab-line {
  display: flex;
  gap: 12px;
  padding-inline: 10px 14px;
  border-inline-start: 3px solid transparent;
  transition: background var(--dur-fast), opacity var(--dur);
}

.lab-line-no {
  flex-shrink: 0;
  width: 2ch;
  text-align: right;
  color: var(--ink-3);
  user-select: none;
}

.lab-line-code {
  white-space: pre;
  color: var(--syn-variable);
}

.lab-line.is-next {
  background: var(--highlight-wash);
  border-inline-start-color: var(--highlight);
}

.lab-line.is-done {
  background: color-mix(in srgb, var(--ok) 10%, transparent);
  border-inline-start-color: color-mix(in srgb, var(--ok) 60%, transparent);
}

.lab-line.is-run {
  border-inline-start-color: var(--ok);
  background: color-mix(in srgb, var(--ok) 9%, transparent);
}

.lab-line.is-skipped {
  opacity: 0.38;
}

/* ---------------------------------------------------------------- tracer lab */
.trace-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--s-4);
  align-items: start;
}

.trace-left,
.trace-right {
  display: grid;
  gap: var(--s-2);
  min-width: 0;
}

.trace-code .lab-lines {
  max-height: 360px;
  overflow-y: auto;
}

.trace-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.trace-counter {
  margin-inline-start: auto;
  font-size: var(--fs-xs);
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.trace-slider {
  width: 100%;
  accent-color: var(--accent);
}

.trace-event {
  min-height: 1.6em;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

.trace-panel-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--ink-3);
}

.trace-panel-title svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.trace-state {
  display: grid;
  gap: var(--s-2);
}

.trace-frame {
  display: grid;
  gap: 4px;
  padding: 8px 10px;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  background: var(--surface);
}

.trace-frame.is-current {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--rule));
}

.trace-frame-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--accent);
}

.trace-var {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  padding: 3px 6px;
  border-radius: 6px;
  transition: background var(--dur);
}

.trace-var.is-changed {
  background: var(--highlight-wash);
}

.trace-name {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--ink);
}

.trace-value {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--syn-string);
  overflow-wrap: anywhere;
}

.trace-list,
.trace-dict {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.trace-item,
.trace-entry {
  display: inline-grid;
  gap: 1px;
  padding: 1px 6px;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--code-surface);
  text-align: center;
}

.trace-item i {
  font-style: normal;
  font-size: 0.66rem;
  color: var(--ink-3);
}

.trace-entry b {
  font-weight: 600;
  color: var(--accent);
}

.trace-bracket {
  align-self: center;
  color: var(--ink-3);
}

/* An object: its class name, then its attributes (like a record card). */
.trace-object {
  padding: 3px;
  border: 1px dashed var(--rule-strong);
  border-radius: 7px;
}

.trace-class {
  align-self: center;
  padding-inline: 4px;
  font-weight: 700;
  color: var(--syn-keyword);
}

.trace-empty {
  font-size: var(--fs-xs);
  color: var(--ink-3);
}

.trace-output {
  min-height: 2.4em;
  max-height: 160px;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
}

.trace-edit summary {
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--ink-2);
}

.trace-edit .editor-shell {
  margin-block: 8px;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  overflow: hidden;
}

/* ---------------------------------------------------------------- slicing lab */
.slice-value code,
.slice-expression code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.slice-boxes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  direction: ltr;
}

.slice-cell {
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto;
  justify-items: center;
  min-width: 34px;
  padding: 2px 4px 4px;
  border: 1px solid var(--rule-strong);
  border-radius: 8px;
  background: var(--surface);
  transition: background var(--dur), border-color var(--dur), transform var(--dur);
}

.slice-index {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-3);
}

.slice-index.is-negative {
  color: color-mix(in srgb, var(--bad) 70%, var(--ink-3));
}

.slice-item {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}

.slice-order {
  position: absolute;
  top: -8px;
  inset-inline-end: -6px;
  min-width: 16px;
  padding: 0 4px;
  border-radius: var(--r-pill);
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 16px;
  text-align: center;
}

.slice-order:empty {
  display: none;
}

.slice-cell.is-picked {
  border-color: var(--highlight);
  background: var(--highlight-wash);
  transform: translateY(-2px);
}

.slice-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
}

.slice-field {
  display: grid;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-2);
}

.slice-input {
  width: 92px;
  min-height: 34px;
  padding: 4px 8px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-sm);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-mono);
}

.slice-expression {
  font-size: var(--fs-sm);
}

.slice-result {
  color: var(--ok);
}

.slice-error {
  color: var(--bad);
  font-family: var(--font-mono);
}

.slice-note {
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

/* ---------------------------------------------------------------- branches lab */
.lab-param {
  border-radius: var(--r-sm);
  border: 1px solid var(--rule);
}

.branch-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  font-size: var(--fs-xs);
  color: var(--ink-2);
}

.branch-key {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.branch-key::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.branch-key.is-run::before {
  background: color-mix(in srgb, var(--ok) 35%, transparent);
  box-shadow: inset 3px 0 0 var(--ok);
}

.branch-key.is-skipped::before {
  background: var(--surface-3);
  opacity: 0.6;
}

@media (max-width: 760px) {
  .trace-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------------------------------------------------------------- brand mark: a prompt and a heartbeat */
.brand-mark .brand-mark-rules {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
}

.brand-mark-pulse {
  fill: none;
  stroke: url(#brand-gradient);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* An example with a deliberate error: it waits for the learner to press Run. */
.runner-hint {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  margin: 0 0 var(--s-2);
  font-size: var(--fs-sm);
  color: var(--warn);
}

.runner-hint svg {
  flex: none;
  width: 1em;
  height: 1em;
}

/* ---------------------------------------------------------------- national-ID lab */

.nid-field {
  display: grid;
  gap: var(--s-1);
  max-width: 22rem;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

.nid-input {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.nid-boxes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-block: var(--s-3);
}

.nid-cell {
  display: grid;
  justify-items: center;
  min-width: 30px;
  padding: 2px 4px 4px;
  border: 1px solid var(--rule-strong);
  border-top-width: 3px;
  border-radius: 7px;
  background: var(--surface);
  transition: background var(--dur), transform var(--dur);
}

.nid-index {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-3);
}

.nid-digit {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
}

.nid-cell.is-picked {
  background: var(--highlight-wash);
  transform: translateY(-2px);
}

/* One colour per part, shared by the digit boxes and the legend rows. */
.nid-century { --nid-color: var(--syn-keyword); }
.nid-birth { --nid-color: var(--syn-string); }
.nid-governorate { --nid-color: var(--syn-number); }
.nid-sequence, .nid-sex { --nid-color: var(--syn-function); }
.nid-check { --nid-color: var(--syn-comment); }

.nid-cell { border-top-color: var(--nid-color); }
.nid-sex-digit { outline: 2px dashed var(--nid-color); outline-offset: 1px; }

.nid-parts {
  display: grid;
  gap: 4px;
}

.nid-part {
  display: grid;
  grid-template-columns: minmax(7rem, auto) minmax(0, auto) minmax(0, 1fr);
  align-items: center;
  gap: var(--s-2);
  padding: 6px 10px;
  border: 1px solid var(--rule);
  border-inline-start: 4px solid var(--nid-color);
  border-radius: 8px;
  background: var(--code-surface);
  color: var(--ink);
  font: inherit;
  text-align: start;
  cursor: default;
}

.nid-part:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nid-part-label {
  font-weight: 600;
}

.nid-part-slice {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-2);
}

.nid-part-meaning.is-bad,
.nid-status.is-bad {
  color: var(--warn);
}

.nid-status {
  margin-block: var(--s-2) 0;
  font-size: var(--fs-sm);
}

.nid-status.is-ok {
  color: var(--ok);
}

.nid-privacy {
  margin: var(--s-2) 0 0;
  font-size: var(--fs-xs);
  color: var(--ink-3);
}

@media (max-width: 560px) {
  .nid-part {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}