:root {
  --dt-ink: #182133;
  --dt-muted: #5d6879;
  --dt-line: #d8dfeb;
  --dt-blue: #2856c6;
  --dt-blue-soft: #edf3ff;
  --dt-violet: #7048cf;
  --dt-bites: #d94f55;
  --dt-bites-soft: #fff0f0;
  --dt-safe: #16886c;
  --dt-safe-soft: #eaf9f4;
  --dt-card: rgba(255, 255, 255, 0.93);
}

html { overflow-x: clip; }

.decision-tree-page {
  color: var(--dt-ink);
  overflow-x: clip;
}

.decision-tree-shell {
  width: min(1640px, calc(100% - 28px));
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: 70px;
}

.dt-hero {
  width: min(960px, 100%);
  margin: 42px auto 24px;
  text-align: center;
}

.dt-eyebrow,
.dt-task-number,
.dt-section-heading > span,
.dt-card-heading > div > span {
  display: inline-block;
  margin: 0 0 8px;
  color: var(--dt-blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.dt-hero h1 {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 5.3rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.dt-task-number {
  margin: 14px 0 4px;
  color: var(--dt-violet);
}

.dt-hero > p:not(.dt-eyebrow, .dt-task-number) {
  max-width: 780px;
  margin: 8px auto 0;
  color: var(--dt-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.55;
}

.dt-hero .dt-lead {
  color: var(--dt-ink);
  font-size: clamp(1.1rem, 2.3vw, 1.35rem);
}

.dt-variant-tabs {
  display: flex;
  gap: 8px;
  width: fit-content;
  margin: 0 auto 28px;
  padding: 6px;
  border: 1px solid var(--dt-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 30px rgba(30, 41, 59, 0.08);
}

.dt-variant-tabs button {
  min-height: 44px;
  padding: 9px 20px;
  border: 0;
  border-radius: 10px;
  color: var(--dt-muted);
  background: transparent;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.dt-variant-tabs button[aria-selected="true"] {
  color: #fff;
  background: linear-gradient(135deg, var(--dt-blue), var(--dt-violet));
  box-shadow: 0 7px 18px rgba(53, 77, 177, 0.24);
}

.dt-workspace {
  display: grid;
  grid-template-columns: minmax(350px, 420px) minmax(0, 1fr);
  align-items: start;
  gap: 22px;
}

.dt-training-panel,
.dt-example-card,
.dt-editor-card {
  border: 1px solid rgba(203, 213, 225, 0.9);
  border-radius: 18px;
  background: var(--dt-card);
  box-shadow: 0 18px 44px rgba(30, 41, 59, 0.09);
}

.dt-training-panel {
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  overflow: auto;
  padding: 22px;
  scrollbar-width: thin;
}

.dt-section-heading h2,
.dt-card-heading h2 {
  margin: 0;
  color: var(--dt-ink);
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.15;
}

.dt-section-heading p,
.dt-card-heading p {
  margin: 7px 0 0;
  color: var(--dt-muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.dt-section-heading .dt-feature-hint,
.dt-card-heading .dt-feature-hint {
  color: var(--dt-ink);
  font-size: 0.84rem;
}

.dt-training-group {
  margin-top: 22px;
}

.dt-training-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-size: 1rem;
}

.dt-training-group h3::before {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.dt-training-group.bites h3 { color: var(--dt-bites); }
.dt-training-group.safe h3 { color: var(--dt-safe); }

.dt-monkey-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.dt-monkey-card {
  position: relative;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 12px;
  background: #edf5f8;
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.dt-monkey-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
}

.dt-monkey-id {
  position: absolute;
  top: 5px;
  left: 5px;
  min-width: 28px;
  padding: 3px 6px;
  border-radius: 7px;
  color: var(--dt-ink);
  background: rgba(255, 255, 255, 0.92);
  font-size: 0.72rem;
  font-weight: 950;
  text-align: center;
  box-shadow: 0 2px 7px rgba(15, 23, 42, 0.18);
}

.dt-monkey-card.is-wrong {
  border-color: #d9363e;
  box-shadow: 0 0 0 3px rgba(217, 54, 62, 0.14);
  transform: translateY(-2px);
}

.dt-monkey-result {
  padding: 7px;
  color: #8e1f27;
  background: #fff1f2;
  font-size: 0.68rem;
  font-weight: 800;
  line-height: 1.3;
}

.dt-source-note {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--dt-line);
  color: var(--dt-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.dt-source-note summary {
  color: var(--dt-ink);
  font-weight: 800;
  cursor: pointer;
}

.dt-source-note p { margin: 8px 0 0; }
.dt-source-note a { color: var(--dt-blue); }

.dt-builder-column {
  display: grid;
  min-width: 0;
  gap: 22px;
}

.dt-example-card,
.dt-editor-card {
  padding: clamp(18px, 3vw, 28px);
}

.dt-card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.dt-secondary-button,
.dt-danger-button,
.dt-primary-button,
.dt-node-action,
.dt-target-action {
  border: 0;
  border-radius: 10px;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.dt-secondary-button,
.dt-danger-button {
  flex: none;
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--dt-line);
  color: var(--dt-ink);
  background: #f8fafc;
}

.dt-danger-button { color: #a32d35; }

.dt-example-tree {
  position: relative;
  width: min(560px, 100%);
  margin: 26px auto 4px;
  text-align: center;
}

.dt-example-tree[hidden] { display: none; }

.dt-demo-feature,
.dt-tree-node.feature {
  border: 2px solid #6d78df;
  color: #252c70;
  background: linear-gradient(145deg, #f8f7ff, #e9ecff);
}

.dt-demo-feature {
  position: relative;
  z-index: 2;
  width: fit-content;
  margin: auto;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 900;
}

.dt-demo-branches {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  margin-top: 0;
}

.dt-demo-branches > div {
  position: relative;
  padding-top: 32px;
}

.dt-demo-branches span,
.dt-branch-label {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 999px;
  color: #475569;
  background: #fff;
  font-size: 0.72rem;
  font-weight: 900;
}

.dt-demo-leaf,
.dt-tree-node.leaf {
  border-radius: 999px;
  font-weight: 950;
}

.dt-demo-leaf {
  position: relative;
  z-index: 2;
  margin-top: 5px;
  padding: 11px 16px;
}

.dt-demo-leaf.bites,
.dt-tree-node.leaf.bites {
  border: 2px solid #e2767b;
  color: #9c252c;
  background: var(--dt-bites-soft);
}

.dt-demo-leaf.safe,
.dt-tree-node.leaf.safe {
  border: 2px solid #51ad94;
  color: #08644f;
  background: var(--dt-safe-soft);
}

.dt-palette {
  margin-top: 24px;
  padding: 17px;
  border: 1px solid var(--dt-line);
  border-radius: 14px;
  background: #f8fafc;
}

.dt-palette-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.dt-palette-heading h3 { margin: 0; font-size: 1rem; }
.dt-palette-heading span { color: var(--dt-muted); font-size: 0.78rem; }

.dt-palette-group + .dt-palette-group { margin-top: 13px; }
.dt-palette-label { margin: 0 0 7px; color: var(--dt-muted); font-size: 0.73rem; font-weight: 850; text-transform: uppercase; letter-spacing: 0.07em; }
.dt-palette-buttons, .dt-leaf-palette { display: flex; flex-wrap: wrap; gap: 8px; }
.dt-leaf-palette { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--dt-line); }

.dt-tool {
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid #b9c3d5;
  border-radius: 10px;
  color: #293348;
  background: #fff;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 820;
  cursor: grab;
  touch-action: manipulation;
}

.dt-tool.feature::before { content: "◇ "; color: var(--dt-violet); }
.dt-tool.leaf::before { content: "● "; }
.dt-tool.leaf.bites::before { color: var(--dt-bites); }
.dt-tool.leaf.safe::before { color: var(--dt-safe); }
.dt-tool[aria-pressed="true"] { border-color: var(--dt-blue); box-shadow: 0 0 0 3px rgba(40, 86, 198, 0.13); background: var(--dt-blue-soft); }

.dt-interaction-status {
  min-height: 24px;
  margin: 14px 0 8px;
  color: var(--dt-blue);
  font-size: 0.86rem;
  font-weight: 760;
}

.dt-tree-viewport {
  min-height: 360px;
  overflow: auto;
  padding: 30px;
  border: 1px dashed #aeb9cc;
  border-radius: 16px;
  background-color: #fbfcff;
  background-image: radial-gradient(#dce3ee 1px, transparent 1px);
  background-size: 18px 18px;
  overscroll-behavior: contain;
}

.dt-tree-editor {
  position: relative;
  display: grid;
  place-items: start center;
  width: max-content;
  min-width: 100%;
  min-height: 290px;
}

.dt-tree-slot {
  display: grid;
  place-items: start center;
  min-width: 170px;
}

.dt-tree-node {
  position: relative;
  z-index: 2;
  width: 180px;
  padding: 11px;
  border-radius: 13px;
  text-align: center;
  box-shadow: 0 8px 18px rgba(30, 41, 59, 0.09);
}

.dt-tree-node[draggable="true"] { cursor: grab; }
.dt-tree-node.is-moving { opacity: 0.45; }
.dt-node-title { display: block; font-size: 0.9rem; line-height: 1.25; }

.dt-node-actions {
  display: flex;
  justify-content: center;
  gap: 5px;
  margin-top: 9px;
}

.dt-node-action,
.dt-target-action {
  min-height: 28px;
  padding: 4px 7px;
  color: #536174;
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.67rem;
}

.dt-node-action.delete { color: #a32d35; }
.dt-target-action { margin-top: 7px; color: var(--dt-blue); border: 1px dashed #7d99dc; }

.dt-branches {
  position: relative;
  display: grid;
  grid-template-columns: minmax(190px, auto) minmax(190px, auto);
  align-items: start;
  gap: 18px;
  padding-top: 36px;
}

.dt-branch {
  position: relative;
  display: grid;
  justify-items: center;
  padding-top: 9px;
}

.dt-branch-label {
  position: relative;
  z-index: 1;
  margin-bottom: 9px;
  border: 1px solid #d8dfeb;
}

.dt-drop-zone {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 170px;
  min-height: 72px;
  padding: 10px;
  border: 2px dashed #9eabc0;
  border-radius: 12px;
  color: #69768a;
  background: rgba(255, 255, 255, 0.84);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.35;
  cursor: pointer;
}

.dt-drop-zone.root { width: 230px; min-height: 100px; font-size: 0.9rem; }
.dt-drop-zone.is-selected,
.dt-tree-slot.is-drop-target > .dt-tree-node { border-color: var(--dt-blue); box-shadow: 0 0 0 4px rgba(40, 86, 198, 0.14); }
.dt-drop-zone:hover,
.dt-drop-zone:focus-visible { color: var(--dt-blue); border-color: var(--dt-blue); background: var(--dt-blue-soft); }

.dt-check-area { margin-top: 20px; }

.dt-primary-button {
  width: 100%;
  min-height: 52px;
  padding: 12px 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--dt-blue), var(--dt-violet));
  box-shadow: 0 11px 24px rgba(63, 69, 177, 0.23);
  font-size: 1rem;
}

.dt-primary-button:hover { filter: brightness(1.06); transform: translateY(-1px); }

.dt-feedback {
  margin-top: 14px;
  padding: 16px;
  border-radius: 12px;
  line-height: 1.5;
}

.dt-feedback.incomplete { color: #8a4b05; background: #fff6df; border: 1px solid #efc46e; }
.dt-feedback.wrong { color: #8f252d; background: #fff0f1; border: 1px solid #ed9da2; }
.dt-feedback.success { color: #075f4d; background: #e9faf4; border: 1px solid #79c9b3; }
.dt-feedback strong { display: block; margin-bottom: 4px; }
.dt-feedback p { margin: 0; }
.dt-feedback .dt-secondary-button { margin-top: 12px; color: #075f4d; border-color: #79c9b3; background: #fff; }
.dt-next-task-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 10px;
  text-decoration: none;
}

.solution-download {
  width: min(960px, 100%);
  margin: 28px auto 0;
  padding: 22px 24px;
  border: 1px solid var(--dt-line);
  border-left: 5px solid var(--dt-blue);
  border-radius: 16px;
  background: var(--dt-card);
  box-shadow: 0 18px 44px rgba(30, 41, 59, 0.09);
}

.solution-download h2 {
  margin: 0;
  color: var(--dt-ink);
  font-size: 1.25rem;
}

.solution-reveal { margin-top: 12px; }

.solution-reveal summary {
  width: fit-content;
  color: var(--dt-blue);
  font-weight: 850;
  cursor: pointer;
}

.solution-reveal[open] summary { margin-bottom: 14px; }

.solution-code-form {
  display: grid;
  gap: 11px;
  max-width: 31rem;
}

.solution-code-form label { font-weight: 850; }

.solution-code-controls {
  display: flex;
  gap: 10px;
}

.solution-code-controls input {
  min-width: 0;
  flex: 1 1 12rem;
  padding: 11px 13px;
  border: 1px solid var(--dt-line);
  border-radius: 10px;
  font: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.solution-code-controls button,
.download-button {
  min-height: 44px;
  padding: 10px 16px;
  border: 0;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--dt-blue), var(--dt-violet));
  font: inherit;
  font-weight: 850;
}

.solution-code-controls button { cursor: pointer; }

.solution-code-message {
  min-height: 1.4rem;
  margin: 0;
  color: var(--dt-muted);
}

.solution-code-message.error { color: #9c252c; }

.download-button {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  text-decoration: none;
}

.download-button[hidden] { display: none; }

button:focus-visible,
[draggable="true"]:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(40, 86, 198, 0.34);
  outline-offset: 3px;
}

@media (max-width: 1120px) {
  .dt-workspace { grid-template-columns: 1fr; }
  .dt-training-panel { position: static; max-height: none; }
  .dt-monkey-grid { grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); }
}

@media (max-width: 700px) {
  .decision-tree-shell { width: min(100% - 16px, 1640px); }
  .dt-hero { margin-top: 28px; }
  .dt-variant-tabs { width: 100%; }
  .dt-variant-tabs button { flex: 1; padding-inline: 9px; }
  .dt-card-heading { display: grid; }
  .dt-card-heading button { width: 100%; }
  .dt-training-panel, .dt-example-card, .dt-editor-card { border-radius: 14px; }
  .dt-tree-viewport { padding: 22px 14px; }
  .dt-monkey-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .solution-code-controls { align-items: stretch; flex-direction: column; }
  .download-button { width: 100%; justify-content: center; }
}

@media (max-width: 430px) {
  .dt-monkey-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .dt-demo-branches { gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* Aufgabe 2: fertige Modelle mit unbekannten Testdaten prüfen */
.dt-test-page { --dt-test-yellow: #f7c948; }
.dt-test-hero { border-left-color: var(--dt-violet); }
.dt-test-card {
  box-sizing: border-box;
  width: min(1440px, 100%);
  margin: 26px auto 0;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--dt-line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 20px 54px rgba(30, 41, 59, 0.1);
}
.dt-test-card[hidden] { display: none; }
.dt-test-card h2 { margin-top: 0; color: var(--dt-ink); }
.dt-kicker { margin: 0 0 5px; color: var(--dt-violet); font-size: 0.78rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; }
.dt-inline-button { display: inline-flex; width: auto; margin-top: 10px; align-items: center; text-decoration: none; }
.dt-gate { max-width: 850px; text-align: center; }
.dt-task-links { display: flex; justify-content: center; margin: 14px auto 0; }
.dt-task-links a { text-decoration: none; }
.dt-task-links a[aria-current="page"] { color: #fff; border-color: var(--dt-violet); background: var(--dt-violet); }

.dt-intro-grid,
.dt-result-comparison {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(210px, 0.35fr);
  gap: 22px;
  align-items: center;
  margin: 18px 0 24px;
}
.dt-training-badge,
.dt-result-comparison > div {
  display: grid;
  gap: 3px;
  padding: 18px;
  border: 1px solid #cdd8f2;
  border-radius: 15px;
  background: linear-gradient(145deg, #f8faff, #eef2ff);
}
.dt-training-badge span,
.dt-result-comparison span { color: var(--dt-muted); font-size: 0.78rem; font-weight: 850; letter-spacing: 0.06em; text-transform: uppercase; }
.dt-training-badge strong,
.dt-result-comparison strong { font-size: 1.15rem; }
.dt-training-badge em,
.dt-result-comparison em { color: var(--dt-blue); font-size: 1.8rem; font-style: normal; font-weight: 950; }
.dt-result-comparison { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.dt-test-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.dt-progress { margin: 0; color: var(--dt-muted); font-size: 1.05rem; }
.dt-progress strong { color: var(--dt-ink); }
.dt-monkey-stage {
  display: flex;
  min-height: 185px;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 4vw, 46px);
  margin: 20px 0;
  padding: 18px;
  border: 1px solid #dbe3f1;
  border-radius: 18px;
  background: radial-gradient(circle at 50% 10%, #fff 0, #f4f7fb 72%);
}
.dt-current-monkey {
  display: grid;
  min-width: 116px;
  justify-items: center;
  gap: 5px;
  margin: 0;
  color: var(--dt-ink);
}
.dt-current-monkey img { width: 122px; height: 122px; border-radius: 16px; object-fit: cover; box-shadow: 0 10px 22px rgba(30, 41, 59, 0.16); }
.dt-current-monkey strong { font-size: 1.02rem; }
.dt-prediction,
.dt-actual { display: grid; gap: 5px; padding: 14px 18px; border-radius: 13px; background: #fff; box-shadow: 0 8px 20px rgba(30, 41, 59, 0.09); }
.dt-prediction strong { color: var(--dt-blue); font-size: 1.4rem; }
.dt-actual.correct { border-left: 5px solid #1b9a76; }
.dt-actual.wrong { border-left: 5px solid #d06169; }

.dt-model-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(330px, 0.7fr); gap: 22px; align-items: start; }
.dt-model-grid > section,
.dt-compare-tree { min-width: 0; padding: 16px; border: 1px solid #dce3ef; border-radius: 16px; background: #fbfcff; }
.dt-model-grid h2 { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 1.05rem; }
.dt-lock { color: var(--dt-muted); font-size: 0.72rem; font-weight: 750; }
.dt-test-info { margin-top: 12px; color: var(--dt-muted); font-size: 0.86rem; }
.dt-test-info summary { color: var(--dt-blue); font-weight: 800; cursor: pointer; }
.dt-test-action { max-width: 620px; margin: 22px auto 0; }
.dt-inline-test-action { display: flex; min-width: min(250px, 100%); align-items: center; }
.dt-inline-test-action > button { width: 100%; }

.dt-readonly-viewport {
  position: relative;
  display: flex;
  overflow: hidden;
  height: 280px;
  align-items: flex-start;
  justify-content: center;
  padding: 8px;
  border-radius: 14px;
  background: #f1f4f9;
}
.dt-readonly-viewport.compact { height: 230px; padding: 6px; font-size: 0.76rem; }
.dt-readonly-viewport > .dt-readonly-subtree {
  position: relative;
  flex: 0 0 auto;
}
.dt-readonly-subtree { position: relative; display: grid; min-width: max-content; justify-items: center; transition: none !important; }
.dt-readonly-node {
  position: relative;
  z-index: 2;
  display: flex;
  width: 118px;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 6px 7px;
  border: 2px solid #aeb9cc;
  border-radius: 11px;
  background: #fff;
  text-align: center;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
  font-size: 0.78rem;
}
.compact .dt-readonly-node { width: 92px; min-height: 34px; padding: 5px 6px; font-size: 0.7rem; }
.dt-readonly-node.feature { color: #243d77; border-color: #9cafdb; background: #f6f8ff; }
.dt-readonly-node.leaf.bites { color: #8b222b; border-color: #e0a0a5; background: #fff1f2; }
.dt-readonly-node.leaf.safe { color: #08705a; border-color: #87cbb9; background: #edfaf6; }
.dt-node-symbol { font-weight: 950; }
.dt-readonly-node.is-active {
  border-color: #d39000;
  background: #fff8d9;
  box-shadow: 0 0 0 5px rgba(247, 201, 72, 0.3);
  transform: translateY(-2px);
}
.dt-readonly-node.is-result { box-shadow: 0 0 0 6px rgba(247, 201, 72, 0.42); }
.dt-readonly-branches {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(130px, max-content));
  justify-content: center;
  gap: 9px;
  padding-top: 21px;
}
.compact .dt-readonly-branches { grid-template-columns: repeat(2, minmax(98px, max-content)); gap: 6px; padding-top: 17px; }
.dt-readonly-branch { position: relative; display: grid; justify-items: center; gap: 3px; padding-top: 4px; }
.dt-readonly-branch-label { position: relative; z-index: 1; padding: 1px 6px; border-radius: 99px; color: #556276; background: #fff; font-size: 0.72rem; font-weight: 900; }
.dt-readonly-branch.is-active > .dt-readonly-branch-label { color: #6d4b00; background: var(--dt-test-yellow); }

.dt-tree-edge-layer {
  position: absolute;
  z-index: 0;
  inset: 0;
  overflow: visible;
  pointer-events: none;
}

.dt-tree-edges {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.dt-tree-edge {
  fill: none;
  stroke: #8f9bae;
  stroke-width: 2;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.dt-tree-edge.is-active {
  stroke: #d39000;
  stroke-width: 4;
}

.dt-confusion-matrix { width: 100%; border-collapse: separate; border-spacing: 4px; color: var(--dt-ink); font-size: 0.78rem; }
.dt-confusion-matrix caption { margin-bottom: 9px; font-size: 1.05rem; font-weight: 900; text-align: left; }
.dt-confusion-matrix th { padding: 7px; color: var(--dt-muted); font-size: 0.7rem; }
.dt-confusion-matrix td { min-width: 84px; padding: 12px 7px; border: 1px solid #d5ddea; border-radius: 9px; background: #fff; text-align: center; }
.dt-confusion-matrix td strong { display: block; font-size: 1.5rem; }
.dt-confusion-matrix td span { display: block; margin-top: 2px; color: var(--dt-muted); font-size: 0.64rem; }
.dt-confusion-matrix td.is-updated { border-color: #d39000; background: #fff8d9; animation: matrix-pulse 700ms ease; }
@keyframes matrix-pulse { 50% { box-shadow: 0 0 0 6px rgba(247, 201, 72, 0.38); } }
.dt-score { margin-bottom: 0; padding: 12px; border-radius: 10px; background: #edf3ff; line-height: 1.55; }

.dt-observation { margin: 20px 0; padding: 20px; border-left: 5px solid var(--dt-test-yellow); border-radius: 12px; background: #fff9df; }
.dt-observation h3, .dt-observation p { margin: 0; }
.dt-observation p { margin-top: 5px; }
.dt-summary-actions { display: flex; gap: 12px; }
.dt-summary-actions > * { flex: 1; }
.dt-compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 20px 0; }
.dt-compare-tree h2, .dt-compare-tree h3 { margin: 0; }
.dt-training-score { margin: 5px 0 13px; color: var(--dt-muted); }
.dt-dual-prediction { max-width: 620px; padding: 12px 18px; border-radius: 14px; background: #fff; box-shadow: 0 8px 20px rgba(30, 41, 59, 0.09); }
.dt-dual-prediction p { margin: 7px 0; }

.dt-discovery-form { display: grid; gap: 18px; margin-top: 22px; }
.dt-discovery-form fieldset { display: grid; gap: 9px; padding: 18px; border: 1px solid #d9e0eb; border-radius: 14px; }
.dt-discovery-form legend { padding: 0 6px; color: var(--dt-ink); font-weight: 900; }
.dt-form-feedback { min-height: 1.5rem; margin: 0; font-weight: 800; }
.dt-form-feedback.wrong { color: #a32d35; }

.dt-focus-monkey { display: flex; justify-content: center; margin: 18px 0; }
.dt-focus-monkey.large .dt-current-monkey img { width: 190px; height: 190px; }
.dt-focus-monkey.large .dt-current-monkey strong { font-size: 1.2rem; }
.dt-analysis-prompt { max-width: 900px; margin-inline: auto; text-align: center; line-height: 1.6; }
.dt-analysis-tree { padding: 16px; border: 1px solid #d6deeb; border-radius: 15px; background: #f8faff; }
.dt-analysis-grid .dt-readonly-viewport { margin-top: 12px; }
.dt-tree-answer-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.dt-tree-answer-form > .dt-form-feedback,
.dt-tree-answer-form > button { grid-column: 1 / -1; }
.dt-highlighted-trees .dt-readonly-node:not(.is-active) { opacity: 0.48; }
.dt-monkey-features { max-width: 520px; margin: 0 auto 22px; padding: 16px 22px; border-radius: 14px; background: #eef3ff; text-align: center; }
.dt-monkey-features h3 { margin-top: 0; }
.dt-monkey-features p { display: inline-block; margin: 0 12px; }
.dt-path-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.dt-path-comparison > div { padding: 20px; border: 1px solid #d6deeb; border-radius: 15px; background: #f8faff; text-align: center; }
.dt-path-comparison h3 { margin-top: 0; }
.dt-path-comparison p { font-size: 1.05rem; line-height: 1.7; }
.dt-outcome { display: inline-block; padding: 5px 12px; border-radius: 99px; font-weight: 900; }
.dt-outcome.bites { color: #8b222b; background: #ffe8ea; }
.dt-outcome.safe { color: #08705a; background: #e4f8f2; }
.dt-explanation,
.dt-definition { margin-top: 20px; padding: 20px; border-radius: 14px; background: #eef3ff; }
.dt-remember { margin: 22px 0; padding: 22px; border: 2px solid #d4aa2f; border-radius: 16px; background: #fff9df; }
.dt-remember h2 { margin-bottom: 10px; }
.dt-fine-print { color: #635830; font-size: 0.86rem; }
.dt-definition h3 { margin-top: 0; }
.dt-complete { display: flex; align-items: center; gap: 20px; }
.dt-complete > span { display: grid; width: 62px; height: 62px; flex: 0 0 auto; place-items: center; border-radius: 50%; color: #fff; background: #16866c; font-size: 2rem; font-weight: 950; }

@media (max-width: 1050px) {
  .dt-model-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1050px) {
  .dt-analysis-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .dt-test-card { padding: 16px; border-radius: 15px; }
  .dt-intro-grid, .dt-result-comparison, .dt-compare-grid, .dt-path-comparison { grid-template-columns: 1fr; }
  .dt-monkey-stage { flex-direction: column; }
  .dt-summary-actions { flex-direction: column; }
  .dt-test-toolbar { align-items: stretch; flex-direction: column; }
  .dt-tree-answer-form { grid-template-columns: 1fr; }
  .dt-tree-answer-form > .dt-form-feedback,
  .dt-tree-answer-form > button { grid-column: auto; }
  .dt-next-task-link { margin-left: 0; }
}