/* ──────────────────────────────────────────────────────────────
   Doodle Classifier: page-specific styles
   All rules scoped under .doodle-page
   ────────────────────────────────────────────────────────────── */

/* ── Demo: intro across the top, big canvas left, result right ── */
.doodle-page .dc-demo {
  display: grid;
  grid-template-columns: minmax(0, 580px) minmax(220px, 1fr);
  grid-template-areas:
    "invite invite"
    "pad    results";
  column-gap: var(--space-5);
  row-gap: var(--space-4);
  align-items: start;
  margin: var(--space-4) 0 var(--space-8);
}

.doodle-page .dc-invite  { grid-area: invite; }
.doodle-page .dc-pad     { grid-area: pad; }
.doodle-page .dc-results { grid-area: results; }

.doodle-page .dc-invite-copy {
  margin: 0 0 var(--space-2);
}

.doodle-page .dc-classes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.doodle-page .dc-classes li {
  font-size: var(--fs-pill-sub);
  padding: 3px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: var(--text);
}

/* ── Drawing pad ── */
.doodle-page .dc-canvas-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
}

.doodle-page .dc-canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: #050505;
  transition: border-color 0.22s, box-shadow 0.22s;
  /* Keep touch drags drawing instead of scrolling the page */
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.doodle-page .dc-canvas:hover {
  border-color: rgba(77, 220, 120, 0.45);
  box-shadow: 0 0 28px rgba(77, 220, 120, 0.08);
}

.doodle-page .dc-canvas:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

.doodle-page .dc-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  font-size: var(--fs-small-link);
  color: var(--text-muted);
  pointer-events: none;
}

.doodle-page .dc-hint[hidden] {
  display: none;
}

.doodle-page .dc-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-2);
}

/* Mirrors the contact form's submit button on about.html */
.doodle-page .dc-btn {
  min-width: 112px;
  min-height: 40px;
  padding: 8px 22px;
  border-radius: 8px;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  background: transparent;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.22s, color 0.22s, border-color 0.22s, box-shadow 0.22s, transform 0.15s;
}

.doodle-page .dc-btn:hover {
  border-color: var(--text);
  transform: translateY(-1px);
}

.doodle-page .dc-btn:active {
  transform: translateY(0);
}

.doodle-page .dc-btn:disabled {
  opacity: 0.38;
  pointer-events: none;
  transform: none;
  box-shadow: none;
}

/* System info stays quiet */
.doodle-page .dc-status {
  margin: var(--space-1) 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.8;
}

.doodle-page .dc-status:empty {
  display: none;
}

.doodle-page .dc-status.is-error {
  color: #ff7a7a;
  opacity: 1;
}

/* ── Result ── */
.doodle-page .dc-result {
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.doodle-page .dc-result-empty {
  margin: 0;
  color: var(--text-muted);
}

.doodle-page .dc-result-body,
.doodle-page .dc-result.has-guess .dc-result-empty {
  display: none;
}

.doodle-page .dc-result.has-guess .dc-result-body {
  display: block;
  animation: dc-result-in 0.35s ease-out;
}

.doodle-page .dc-result-lead {
  margin: 0;
  color: var(--text-muted);
}

.doodle-page .dc-result-main {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 var(--space-2);
  margin: 2px 0 0;
  line-height: 1.2;
}

.doodle-page .dc-result-label {
  font-size: 2rem;
  font-weight: 600;
  color: #fff;
}

.doodle-page .dc-result-pct {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--accent);
}

.doodle-page .dc-runners {
  display: flex;
  flex-wrap: wrap;
  gap: 4px var(--space-3);
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-pill-sub);
  color: var(--text-muted);
}

.doodle-page .dc-runner-pct {
  font-family: var(--font-mono);
  opacity: 0.75;
}

@keyframes dc-result-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Dev-only debug panel (rendered only with ?debug) ── */
.doodle-page .dc-debug {
  margin-top: var(--space-3);
  padding: var(--space-2);
  border: 1px dashed rgba(255, 255, 255, 0.3);
  border-radius: 8px;
}

.doodle-page .dc-debug canvas {
  width: 168px;
  height: 168px;
  image-rendering: pixelated;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: block;
}

.doodle-page .dc-debug-title,
.doodle-page .dc-debug-info {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-1);
}

.doodle-page .dc-debug-info {
  margin: var(--space-1) 0 0;
}

/* ── Write-up: four explanatory sections ── */
.doodle-page .dc-sec + .dc-sec {
  margin-top: var(--space-8);
}

.doodle-page .dc-sec[hidden] + .dc-sec {
  margin-top: 0;
}

.doodle-page .dc-sec > p {
  max-width: 72ch;
}

.doodle-page .dc-sec-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-right: 12px;
  vertical-align: 0.15em;
}

.doodle-page .dc-lede {
  font-size: 1rem;
}

.doodle-page .dc-sub {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin: var(--space-5) 0 var(--space-2);
}

.doodle-page .dc-small {
  font-size: var(--fs-pill-sub);
  color: var(--text-muted);
}

.doodle-page .dc-mono {
  font-family: var(--font-mono);
  font-size: 0.8em;
}

.doodle-page .dc-explain strong {
  color: #fff;
  font-weight: 600;
}

/* Shared arrow between horizontal steps (sits in the grid gap) */
.doodle-page .dc-flow-step:not(:last-child)::after,
.doodle-page .dc-loop-steps li:not(:last-child)::after,
.doodle-page .dc-chain li:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: calc(-1 * var(--dc-gap));
  width: var(--dc-gap);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.7;
  transform: translateY(-50%);
}

/* ── 01 Pipeline diagram ── */
.doodle-page .dc-flow {
  --dc-gap: var(--space-3);
  --dc-fig-h: 156px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--dc-gap);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.doodle-page .dc-flow-step {
  position: relative;
}

.doodle-page .dc-flow-step:not(:last-child)::after {
  top: calc(var(--dc-fig-h) / 2);
}

.doodle-page .dc-flow-fig {
  height: var(--dc-fig-h);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  background: #050505;
}

.doodle-page .dc-flow-num {
  margin: 12px 0 2px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
}

.doodle-page .dc-flow-title {
  margin: 0 0 4px;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
  color: #fff;
}

.doodle-page .dc-flow-note {
  margin: 0;
  font-size: var(--fs-pill-sub);
  line-height: 1.5;
  color: var(--text-muted);
}

.doodle-page .dc-flow-aside {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.45;
  color: var(--text-muted);
  opacity: 0.8;
}

/* Figure: pen strokes */
.doodle-page .dc-fig-strokes {
  width: 108px;
  height: 108px;
}

.doodle-page .dc-fig-strokes polyline {
  fill: none;
  stroke: #f2f2f2;
  stroke-width: 7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Figure: 28×28 input with a faint pixel grid */
.doodle-page .dc-fig-pixels {
  position: relative;
  width: 112px;
  height: 112px;
  border: 1px solid rgba(77, 220, 120, 0.35);
}

.doodle-page .dc-fig-pixels canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

.doodle-page .dc-fig-pixels::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: calc(100% / 28) calc(100% / 28);
  pointer-events: none;
}

/* Figure: learned 3×3 filters */
.doodle-page .dc-fig-filters {
  display: grid;
  grid-template-columns: repeat(4, 26px);
  gap: 8px;
}

.doodle-page .dc-filter {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  width: 26px;
  height: 26px;
}

.doodle-page .dc-filter i {
  background: rgba(77, 220, 120, calc(0.06 + var(--v) * 0.94));
  border-radius: 1px;
}

/* Figure: 10 scores */
.doodle-page .dc-fig-scores {
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.625rem;
  line-height: 1.2;
}

.doodle-page .dc-fig-scores li {
  display: grid;
  grid-template-columns: 5.7em minmax(0, 1fr) 3.4em;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
}

.doodle-page .dc-fig-scores li:first-child {
  color: #fff;
}

.doodle-page .dc-fig-scores span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doodle-page .dc-fig-scores i,
.doodle-page .dc-perclass-bars i,
.doodle-page .dc-version-acc i {
  position: relative;
  display: block;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.08);
}

.doodle-page .dc-fig-scores i::before,
.doodle-page .dc-perclass-bars i::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--w);
  border-radius: 2px;
  background: var(--accent);
}

.doodle-page .dc-fig-scores b {
  font-family: var(--font-mono);
  font-weight: 400;
  text-align: right;
}

/* Figure: answer */
.doodle-page .dc-fig-answer {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.doodle-page .dc-fig-answer-lead {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.doodle-page .dc-fig-answer-label {
  margin-top: 2px;
  font-size: 1.6rem;
  font-weight: 600;
  color: #fff;
}

.doodle-page .dc-fig-answer-pct {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
}

/* ── 02 Data split ── */
.doodle-page .dc-split {
  margin: var(--space-3) 0 var(--space-2);
}

.doodle-page .dc-split-bar {
  display: flex;
  gap: 2px;
  height: 12px;
}

.doodle-page .dc-split-bar span {
  border-radius: 3px;
}

.doodle-page .dc-split-train {
  background: var(--accent);
}

.doodle-page .dc-split-cv {
  background: rgba(77, 220, 120, 0.4);
}

.doodle-page .dc-split-test {
  background: repeating-linear-gradient(135deg, rgba(77, 220, 120, 0.75) 0 1.5px, transparent 1.5px 4px);
  box-shadow: inset 0 0 0 1px rgba(77, 220, 120, 0.6);
}

.doodle-page .dc-split-key {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-2) 0 0;
}

.doodle-page .dc-split-key dt {
  font-weight: 600;
  color: #fff;
  font-size: 0.875rem;
}

.doodle-page .dc-split-key dt .dc-mono {
  display: block;
  margin-top: 2px;
  font-weight: 400;
  color: var(--text-muted);
}

.doodle-page .dc-split-key dd {
  margin: 6px 0 0;
  font-size: var(--fs-pill-sub);
  line-height: 1.5;
  color: var(--text-muted);
}

.doodle-page .dc-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-radius: 2px;
  vertical-align: -0.05em;
}

/* ── 02 Training loop ── */
.doodle-page .dc-loop {
  margin: var(--space-3) 0;
}

.doodle-page .dc-loop-steps {
  --dc-gap: var(--space-3);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--dc-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

.doodle-page .dc-loop-steps li {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  font-size: 0.875rem;
}

.doodle-page .dc-loop-steps li:not(:last-child)::after {
  top: 50%;
}

.doodle-page .dc-loop-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
}

.doodle-page .dc-loop-steps .dc-mono {
  color: var(--text-muted);
}

/* Dashed return path from the last step back to the first */
.doodle-page .dc-loop-back {
  margin: 0 12.5%;
  padding: 18px 12px 8px;
  border: 1px dashed rgba(77, 220, 120, 0.45);
  border-top: 0;
  border-radius: 0 0 12px 12px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.doodle-page .dc-loop-back span {
  color: var(--accent);
  margin-right: 4px;
}

/* ── 03 Model progression ── */
.doodle-page .dc-steps-head,
.doodle-page .dc-version {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 170px;
  gap: var(--space-3);
}

.doodle-page .dc-steps-head {
  margin-top: var(--space-4);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.doodle-page .dc-scale-note {
  display: block;
  text-transform: none;
  letter-spacing: 0;
  opacity: 0.75;
}

.doodle-page .dc-versions {
  margin: 0;
  padding: 0;
  list-style: none;
}

.doodle-page .dc-version {
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.doodle-page .dc-version-name {
  margin: 0;
  font-weight: 600;
  color: #fff;
  line-height: 1.35;
}

.doodle-page .dc-version-name .dc-mono {
  display: block;
  margin-bottom: 2px;
  font-weight: 400;
  color: var(--accent);
}

.doodle-page .dc-version-body p {
  max-width: 68ch;
  margin: 0 0 var(--space-1);
  font-size: 0.875rem;
  line-height: 1.6;
}

.doodle-page .dc-version-body p:last-child {
  margin-bottom: 0;
}

.doodle-page .dc-version-why {
  color: var(--text-muted);
}

.doodle-page .dc-version-acc {
  margin: 0;
}

.doodle-page .dc-version-acc b {
  display: block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 400;
  color: #fff;
}

.doodle-page .dc-version-acc i {
  margin-top: 8px;
}

.doodle-page .dc-version-acc i::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: calc(var(--p) * 100%);
  border-radius: 2px;
  background: rgba(77, 220, 120, 0.5);
}

.doodle-page .dc-version.is-final .dc-version-acc b {
  color: var(--accent);
}

.doodle-page .dc-version.is-final .dc-version-acc i::before {
  background: var(--accent);
}

/* ── 03 Results ── */
.doodle-page .dc-results-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.doodle-page .dc-hero-num {
  margin: 0;
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.doodle-page .dc-hero-label {
  margin: var(--space-1) 0 var(--space-3);
  max-width: 36ch;
}

.doodle-page .dc-hero-arch {
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.doodle-page .dc-perclass {
  margin: 0;
}

.doodle-page .dc-perclass figcaption {
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.doodle-page .dc-perclass-bars {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-pill-sub);
}

.doodle-page .dc-perclass-bars li {
  display: grid;
  grid-template-columns: 6.5em minmax(0, 1fr) 3.5em;
  align-items: center;
  gap: 10px;
  line-height: 1.75;
  color: var(--text-muted);
}

.doodle-page .dc-perclass-bars li.is-weak span {
  color: #fff;
}

.doodle-page .dc-perclass-bars i {
  height: 4px;
}

.doodle-page .dc-perclass-bars i::before {
  opacity: 0.75;
}

/* Dashed marker at the overall accuracy, repeated per row */
.doodle-page .dc-perclass-bars i::after {
  content: "";
  position: absolute;
  left: var(--overall);
  top: -6px;
  bottom: -6px;
  border-left: 1px dashed rgba(255, 255, 255, 0.45);
}

.doodle-page .dc-perclass-bars b {
  font-family: var(--font-mono);
  font-weight: 400;
  text-align: right;
}

.doodle-page .dc-perclass-note {
  margin: var(--space-1) 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.doodle-page .dc-ref-key {
  display: inline-block;
  width: 14px;
  margin-right: 6px;
  border-top: 1px dashed rgba(255, 255, 255, 0.6);
  vertical-align: middle;
}

.doodle-page .dc-findings {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  max-width: 72ch;
}

.doodle-page .dc-findings li {
  position: relative;
  padding-left: 20px;
  margin-bottom: var(--space-1);
}

.doodle-page .dc-findings li::before {
  content: "›";
  position: absolute;
  left: 2px;
  font-family: var(--font-mono);
  color: var(--accent);
}

/* ── 04 Model file chain ── */
.doodle-page .dc-chain {
  --dc-gap: var(--space-4);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--dc-gap);
  margin: var(--space-3) 0;
  padding: 0;
  list-style: none;
}

.doodle-page .dc-chain li {
  position: relative;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.doodle-page .dc-chain li:last-child {
  border-color: rgba(77, 220, 120, 0.55);
}

.doodle-page .dc-chain li:not(:last-child)::after {
  top: 50%;
}

.doodle-page .dc-chain .dc-mono {
  display: block;
  color: #fff;
  font-size: 0.8rem;
  word-break: break-word;
}

.doodle-page .dc-chain small {
  display: block;
  margin-top: 4px;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--text-muted);
}

/* ── 04 Preprocessing rail ── */
.doodle-page .dc-rail {
  counter-reset: dc-rail;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.doodle-page .dc-rail li {
  position: relative;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  column-gap: var(--space-3);
  padding: 0 0 var(--space-3) 40px;
  counter-increment: dc-rail;
}

.doodle-page .dc-rail li::before {
  content: counter(dc-rail, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(77, 220, 120, 0.6);
  border-radius: 50%;
  background: var(--bg-dark);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--accent);
}

.doodle-page .dc-rail li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 12px;
  top: 28px;
  bottom: 4px;
  border-left: 1px solid rgba(77, 220, 120, 0.28);
}

.doodle-page .dc-rail p {
  grid-column: 2;
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 64ch;
}

.doodle-page .dc-rail .dc-rail-title {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.5;
  color: #fff;
}

.doodle-page .dc-rail .dc-rail-spec {
  margin-top: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ── 04 Validation callout ── */
.doodle-page .dc-check {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
  max-width: 80ch;
  margin: var(--space-4) 0 var(--space-3);
  padding: 4px 0 4px var(--space-3);
  border-left: 2px solid var(--accent);
}

.doodle-page .dc-check p {
  margin: 0;
  font-size: 0.875rem;
}

.doodle-page .dc-check .dc-check-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  color: var(--accent);
}

/* ── Notebook link (shown once a public URL exists) ── */
.doodle-page .dc-notebook {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  max-width: 60ch;
}

.doodle-page .dc-notebook p {
  margin: 0 0 var(--space-1);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.doodle-page .dc-notebook .dc-notebook-title {
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
}

.doodle-page .dc-notebook-link {
  display: inline-block;
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--fs-small-link);
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(77, 220, 120, 0.4);
  transition: border-color 0.2s;
}

.doodle-page .dc-notebook-link:hover {
  border-bottom-color: var(--accent);
}

/* Five steps get tight between the tablet breakpoint and wide desktop */
@media (max-width: 1180px) and (min-width: 901px) {
  .doodle-page .dc-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    row-gap: var(--space-4);
  }

  .doodle-page .dc-flow-step:nth-child(3)::after {
    content: none;
  }
}

@media (max-width: 900px) {
  /* Horizontal chains stack, arrows turn downward */
  .doodle-page .dc-flow,
  .doodle-page .dc-loop-steps,
  .doodle-page .dc-chain {
    --dc-gap: var(--space-4);
    grid-template-columns: minmax(0, 1fr);
  }

  .doodle-page .dc-flow-step:not(:last-child)::after,
  .doodle-page .dc-loop-steps li:not(:last-child)::after,
  .doodle-page .dc-chain li:not(:last-child)::after {
    content: "↓";
    top: auto;
    right: auto;
    bottom: calc(-1 * var(--dc-gap));
    left: 50%;
    width: auto;
    height: var(--dc-gap);
    display: flex;
    align-items: center;
    transform: translateX(-50%);
  }

  /* Figure beside its caption so the five steps stay scannable */
  .doodle-page .dc-flow {
    --dc-fig-h: 132px;
  }

  .doodle-page .dc-flow-step {
    display: grid;
    grid-template-columns: 148px minmax(0, 1fr);
    grid-auto-rows: min-content;
    column-gap: var(--space-2);
  }

  .doodle-page .dc-flow-fig {
    grid-column: 1;
    grid-row: 1 / span 4;
    padding: 10px;
  }

  .doodle-page .dc-flow-step > p,
  .doodle-page .dc-flow-step > h3 {
    grid-column: 2;
  }

  .doodle-page .dc-flow-num {
    margin-top: 0;
  }

  .doodle-page .dc-flow-step:not(:last-child)::after {
    left: 74px;
  }

  .doodle-page .dc-fig-strokes { width: 96px; height: 96px; }
  .doodle-page .dc-fig-pixels { width: 100px; height: 100px; }
  .doodle-page .dc-fig-filters { grid-template-columns: repeat(4, 22px); gap: 6px; }
  .doodle-page .dc-filter { width: 22px; height: 22px; }
  .doodle-page .dc-fig-scores { font-size: 0.56rem; }
  .doodle-page .dc-fig-scores li { grid-template-columns: 5.6em minmax(0, 1fr) 3.3em; gap: 4px; }

  .doodle-page .dc-split-key {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
  }

  .doodle-page .dc-loop-back {
    margin: 0 18%;
  }

  /* Keep only the accuracy header so the bar scale stays explained */
  .doodle-page .dc-steps-head {
    display: block;
  }

  .doodle-page .dc-steps-head > span:not(:last-child) {
    display: none;
  }

  .doodle-page .dc-version {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }

  .doodle-page .dc-version-acc {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: var(--space-2);
  }

  .doodle-page .dc-version-acc i {
    margin-top: 0;
  }

  .doodle-page .dc-results-row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }

  .doodle-page .dc-rail li {
    grid-template-columns: minmax(0, 1fr);
  }

  .doodle-page .dc-rail p,
  .doodle-page .dc-rail .dc-rail-title {
    grid-column: 1;
    grid-row: auto;
  }

  .doodle-page .dc-check {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }
}


@media (max-width: 900px) {
  /* Title → invitation → canvas → Clear → prediction */
  .doodle-page .dc-demo {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "invite"
      "pad"
      "results";
    row-gap: var(--space-3);
    margin-top: var(--space-3);
  }

  .doodle-page .dc-pad {
    width: 100%;
    /* Keep the square canvas plus Clear inside a phone viewport */
    max-width: min(480px, 100%, max(260px, calc(100svh - 200px)));
    justify-self: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .doodle-page .dc-btn,
  .doodle-page .dc-canvas {
    transition: none;
  }

  .doodle-page .dc-result.has-guess .dc-result-body {
    animation: none;
  }
}