.dt-fish-page {
  --fish-orange: #e87931;
  --fish-blue: #377ed1;
  --fish-yellow: #f2c94c;
  --fish-red: #d84b53;
}

.dt-fish-hero { margin-bottom: 20px; }
.dt-fish-hero h1 { font-size: clamp(2.1rem, 5.4vw, 4.7rem); }

.fish-intro {
  border-color: #cad6e8;
  background: linear-gradient(145deg, rgba(247, 250, 255, 0.98), rgba(251, 247, 255, 0.98));
}

/* Einfuehrung kompakt: Titel, Fortschritt und Buttons in einer Zeile, damit alles ohne Scrollen auf einen Laptop passt. */
.fish-intro[hidden] { display: none; }
.fish-intro-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 14px; }
.fish-intro-heading h2 { margin: 0; font-size: clamp(1.15rem, 1.8vw, 1.45rem); letter-spacing: -0.02em; }
.intro-stepper { display: flex; flex: 0 0 auto; align-items: center; gap: 8px; }
.intro-stepper .dt-primary-button, .intro-stepper .dt-secondary-button { width: auto; min-height: 40px; padding-block: 8px; }
.intro-stepper .dt-secondary-button:disabled { opacity: 0.45; cursor: not-allowed; }
#intro-frame-count { min-width: 4.2em; color: var(--dt-muted); font-size: 0.8rem; font-weight: 900; text-align: center; }
.fish-intro-progress { display: flex; flex: 1 1 360px; gap: 6px; max-width: 520px; }
.fish-intro-progress span { flex: 1 1 0; padding: 6px 8px; border-radius: 8px; color: #6b7483; background: #e7ebf2; font-size: 0.7rem; font-weight: 900; text-align: center; white-space: nowrap; }
.fish-intro-progress span.is-active { color: #fff; background: linear-gradient(135deg, var(--dt-blue), var(--dt-violet)); }
.fish-intro-progress span.is-complete { color: #08705a; background: #dff5ed; }
.tabs-ready .fish-tab-panel.fish-intro { padding: 12px 16px; }
.intro-hint { margin: 6px 0 8px; padding: 5px 10px; border-left: 4px solid #7998d6; border-radius: 6px; color: #304a72; background: #eef4ff; font-size: 0.85rem; line-height: 1.4; text-align: left; }

.fish-intro-workspace { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr); gap: 12px; align-items: stretch; }
.fish-intro-visual, .intro-table-card { min-width: 0; padding: 12px; border: 1px solid #d6dfeb; border-radius: 15px; background: rgba(255, 255, 255, 0.94); }
.fish-intro-visual { display: grid; grid-template-rows: auto 1fr; gap: 10px; }
.intro-visual-top { display: grid; grid-template-columns: minmax(250px, auto) minmax(0, 1fr); gap: 12px; align-items: center; }
.intro-explanation { margin: 0; padding: 8px 12px; border-radius: 10px; color: var(--dt-ink); background: #fff8dc; font-size: 0.9rem; font-weight: 700; line-height: 1.45; text-align: left; }
.intro-tree { min-height: 74px; display: grid; place-items: center; padding: 8px; border-radius: 12px; background: #f0f4fb; }
.intro-tree-unsplit { display: flex; align-items: center; gap: 10px; animation: intro-appear 450ms ease both; }
.intro-tree-arrow { color: #7b8798; font-size: 1.3rem; font-weight: 900; }
.intro-tree-node, .intro-tree-leaf { padding: 6px 11px; border: 2px solid #9cafdb; border-radius: 10px; color: #243d77; background: #fff; font-size: 0.85rem; font-weight: 900; text-align: center; }
.intro-tree-leaf { color: #8b222b; border-color: #e0a0a5; background: #fff1f2; }
.intro-tree-split { display: grid; justify-items: center; animation: intro-appear 550ms ease both; }
.intro-tree-branches { position: relative; display: grid; grid-template-columns: repeat(2, minmax(80px, 1fr)); gap: 40px; padding-top: 18px; }
.intro-tree-branches::before { content: ""; position: absolute; top: 4px; left: 25%; right: 25%; height: 14px; border-top: 2px solid #8090a8; border-left: 2px solid #8090a8; border-right: 2px solid #8090a8; }
.intro-tree-branch { position: relative; z-index: 1; padding: 3px 10px; border-radius: 999px; color: #42516a; background: #fff; font-size: 0.72rem; font-weight: 900; text-align: center; }

.intro-fish-stage { display: grid; align-items: stretch; }
.intro-fish-group { display: grid; grid-template-columns: repeat(5, minmax(60px, 1fr)); gap: 6px; align-content: center; padding: 8px; border: 2px solid #ccd5e2; border-radius: 13px; background: #fafcff; }
.intro-fish-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.intro-fish-groups .intro-fish-group { grid-template-columns: repeat(3, minmax(58px, 1fr)); align-content: start; animation: intro-separate 700ms cubic-bezier(.2,.75,.25,1) both; }
.intro-fish-groups .intro-fish-group.orange { animation-delay: 120ms; }
.intro-group-title { grid-column: 1 / -1; margin: 0; font-size: 0.8rem; text-align: center; }
.intro-fish-token { position: relative; display: grid; min-height: 62px; place-items: center; border: 2px solid transparent; border-radius: 10px; background: #f2f5fa; transition: opacity 350ms ease, transform 350ms ease, border-color 350ms ease; }
.intro-fish-token .fish-shape { margin: -3px 0 9px; transform: scale(0.7); }
.intro-fish-token small { position: absolute; right: 4px; bottom: 2px; left: 4px; overflow: hidden; color: var(--dt-muted); font-size: 0.58rem; font-weight: 850; text-align: center; text-overflow: ellipsis; white-space: nowrap; }
.intro-fish-token.is-error { border-color: #d94f55; background: #fff0f0; animation: intro-error-pulse 700ms ease both; }
.intro-fish-token.is-error::after { content: "Fehler"; position: absolute; top: 2px; right: 2px; padding: 1px 5px; border-radius: 999px; color: #fff; background: #c63f49; font-size: 0.53rem; font-weight: 900; }
.intro-fish-group.is-focus { border-color: var(--dt-blue); box-shadow: 0 0 0 4px rgba(40, 86, 198, 0.11); }

.intro-table-card h3 { display: flex; align-items: baseline; gap: 8px; margin: 0 0 6px; font-size: 1rem; }
.intro-table-card h3 .fish-kicker { margin: 0; }
.intro-table th, .intro-table td { padding-block: 4px; }
.intro-table td[data-intro-cell] { min-width: 48px; color: #8a94a3; background: #f1f3f6; font-size: 0.95rem; font-weight: 950; }
.intro-table td[data-intro-cell].is-filled { color: #174e9a; background: #e5efff; }
.intro-table td[data-intro-cell].is-current { outline: 3px solid #e1ad32; outline-offset: -3px; background: #fff6d9; animation: intro-cell-pop 500ms cubic-bezier(.2,.8,.25,1.2) both; }
.intro-gain-row th { color: var(--dt-ink); font-size: 0.78rem; }
.intro-table-note { min-height: 2.2rem; margin: 6px 0 0; color: var(--dt-muted); font-size: 0.78rem; line-height: 1.4; text-align: left; }
.fish-step-labels { display: grid; justify-items: start; gap: 7px; flex: 0 0 auto; }
.fish-replay-button { padding: 0; border: 0; color: var(--dt-blue); background: transparent; font: inherit; font-size: 0.7rem; font-weight: 850; text-decoration: underline; cursor: pointer; }

@keyframes intro-appear { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
@keyframes intro-separate { from { opacity: 0; transform: translateX(18px) scale(0.96); } to { opacity: 1; transform: none; } }
@keyframes intro-error-pulse { 0% { transform: scale(1); } 45% { transform: scale(1.07); } 100% { transform: scale(1); } }
@keyframes intro-cell-pop { from { opacity: 0.2; transform: scale(0.75); } to { opacity: 1; transform: scale(1); } }

.fish-progress {
  position: sticky;
  z-index: 20;
  top: 6px;
  display: flex;
  gap: 6px;
  width: min(1320px, 100%);
  margin: 0 auto 10px;
  padding: 7px;
  overflow-x: auto;
  border: 1px solid var(--dt-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 28px rgba(30, 41, 59, 0.11);
  backdrop-filter: blur(12px);
}

.fish-progress button {
  display: flex;
  min-width: max-content;
  flex: 1 0 auto;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 11px;
  border: 0;
  border-radius: 10px;
  color: var(--dt-muted);
  background: transparent;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 850;
  cursor: pointer;
}

.fish-progress button span {
  display: grid;
  width: 25px;
  height: 25px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #9aa6b7;
}

.fish-progress button[aria-selected="true"] { color: var(--dt-blue); background: var(--dt-blue-soft); }
.fish-progress button[aria-selected="true"] span { background: var(--dt-blue); }
.fish-progress button.is-complete { color: #08705a; }
.fish-progress button.is-complete span { background: var(--dt-safe); }
.fish-progress button:focus-visible { outline: 3px solid rgba(40, 86, 198, 0.25); outline-offset: -2px; }
.fish-progress button:disabled { opacity: 0.48; cursor: not-allowed; }
.fish-step .flow-navigation { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 22px; }
.fish-step .flow-navigation .dt-primary-button { width: auto; }
.fish-save-status { margin: 0 auto 26px; color: var(--dt-muted); font-size: 0.8rem; text-align: center; }

.fish-step {
  width: min(1320px, 100%);
  margin: 0 auto 30px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid rgba(203, 213, 225, 0.92);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 20px 50px rgba(30, 41, 59, 0.09);
  scroll-margin-top: 95px;
}

.fish-step[hidden], .fish-choice-card[hidden], .fish-deep-card[hidden], .fish-complete[hidden] { display: none; }
.fish-tab-panel[hidden] { display: none; }
.fish-step-heading { display: flex; align-items: flex-start; gap: 18px; margin-bottom: 22px; }
.fish-step-heading h2 { margin: 0; font-size: clamp(1.45rem, 3vw, 2.15rem); letter-spacing: -0.025em; }
.fish-step-heading p { max-width: 900px; margin: 7px 0 0; color: var(--dt-muted); line-height: 1.6; }
.fish-step-number, .fish-extension-badge {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  padding: 7px 11px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--dt-blue), var(--dt-violet));
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.fish-dataset-summary, .fish-tree-reference {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.fish-dataset-summary > *, .fish-tree-reference > * {
  padding: 8px 13px;
  border-radius: 999px;
  color: #334155;
  background: #eef3fb;
  font-size: 0.83rem;
}

.fish-first-layout {
  display: grid;
  grid-template-columns: minmax(310px, 350px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.fish-training-sticky {
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding: 16px;
  border: 1px solid #d8e0eb;
  border-radius: 17px;
  background: linear-gradient(180deg, #f7faff, #fff);
  scrollbar-width: thin;
}

.fish-training-sticky h3 { margin: 0 0 13px; font-size: 1.2rem; }
.fish-training-sticky .fish-dataset-summary { gap: 6px; margin-bottom: 14px; }
.fish-training-sticky .fish-dataset-summary > * { padding: 6px 9px; font-size: 0.72rem; }
.fish-training-sticky .fish-grid { grid-template-columns: repeat(3, minmax(76px, 1fr)); gap: 7px; margin-bottom: 0; }
.fish-training-sticky .fish-card { min-height: 120px; padding-inline: 5px; }
.fish-training-sticky .fish-shape { transform: scale(0.88); }
.fish-first-tables { min-width: 0; }

.fish-grid { display: grid; grid-template-columns: repeat(9, minmax(82px, 1fr)); gap: 9px; margin-bottom: 25px; }
.fish-grid.compact { grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); margin-bottom: 18px; }
.fish-card {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 132px;
  align-content: space-between;
  justify-items: center;
  padding: 12px 7px 8px;
  border: 1px solid #dce3ed;
  border-radius: 14px;
  background: #f8fafc;
}

.fish-shape {
  position: relative;
  width: 66px;
  height: 44px;
  margin: 8px 0 15px;
  border: 3px solid #23324a;
  border-radius: 55% 46% 48% 55%;
  background: var(--scale-color);
  box-shadow: inset 0 -12px 0 var(--belly-color);
}

.fish-shape::before {
  content: "";
  position: absolute;
  top: 7px;
  right: -24px;
  width: 25px;
  height: 28px;
  border: 3px solid #23324a;
  border-left: 0;
  background: var(--fin-color);
  clip-path: polygon(100% 0, 100% 100%, 0 50%);
}

.fish-shape::after {
  content: "";
  position: absolute;
  top: 13px;
  left: 10px;
  width: 7px;
  height: 7px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #172033;
  box-shadow: 25px -13px 0 -1px var(--fin-color);
}

.fish-shape.has-points { background-image: radial-gradient(circle, #24334c 0 3px, transparent 4px); background-size: 18px 18px; }
.fish-card-label { padding: 3px 8px; border-radius: 999px; font-size: 0.68rem; font-weight: 900; }
.fish-card-label.peaceful { color: #08705a; background: var(--dt-safe-soft); }
.fish-card-label.hostile { color: #992d35; background: var(--dt-bites-soft); }
.fish-card details { width: 100%; margin-top: 6px; font-size: 0.67rem; text-align: center; }
.fish-card summary { color: var(--dt-muted); cursor: pointer; }
.fish-card details p { margin: 5px 0 0; line-height: 1.45; }

.fish-table-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.fish-table-grid.compact { grid-template-columns: 1fr; }
.fish-table-card { min-width: 0; padding: 17px; border: 1px solid #d8e0eb; border-radius: 16px; background: #fbfcff; }
.fish-table-card.is-complete { border-color: #70bca8; box-shadow: inset 0 0 0 1px #70bca8; }
.fish-table-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 13px; }
.fish-table-header h3 { margin: 0; font-size: 1.05rem; }
.fish-help-button { padding: 6px 10px; border: 1px solid #9eb2dd; border-radius: 9px; color: var(--dt-blue); background: #fff; font: inherit; font-size: 0.76rem; font-weight: 850; cursor: pointer; }
.fish-help { margin: 0 0 12px; padding: 10px 12px; border-left: 4px solid #e0aa2f; border-radius: 8px; color: #6b531a; background: #fff9df; font-size: 0.8rem; line-height: 1.45; }
.fish-table-scroll { overflow-x: auto; }
.fish-table { width: 100%; min-width: 430px; border-collapse: collapse; font-size: 0.8rem; }
.fish-table th, .fish-table td { padding: 7px 5px; border-bottom: 1px solid #e2e7ef; text-align: center; }
.fish-table th:first-child, .fish-table td:first-child { text-align: left; }
.fish-table th { color: #526075; font-size: 0.7rem; }
.fish-number-input { width: 64px; min-height: 38px; padding: 5px; border: 2px solid #c8d1df; border-radius: 8px; background: #fff; font: inherit; text-align: center; }
.fish-number-input.is-correct { border-color: #16886c; background: #ebfaf5; }
.fish-number-input.is-wrong { border-color: #d24e58; background: #fff1f2; }
.fish-number-input:focus { outline: 3px solid rgba(40, 86, 198, 0.18); border-color: var(--dt-blue); }
.fish-gain-row { display: grid; grid-template-columns: 1fr 100px; align-items: center; gap: 12px; margin-top: 12px; font-weight: 850; }
.fish-table-check {
  display: flex;
  min-height: 46px;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 10px 13px;
  border: 1px solid #b9c7dc;
  border-radius: 11px;
  color: var(--dt-blue);
  background: #fff;
  font-size: 0.84rem;
  font-weight: 900;
  cursor: pointer;
}
.fish-table-check:hover { border-color: var(--dt-blue); background: var(--dt-blue-soft); }
.fish-table-check:focus-within { outline: 3px solid rgba(40, 86, 198, 0.18); }
.fish-table-check input { width: 20px; height: 20px; flex: 0 0 auto; accent-color: var(--dt-safe); cursor: pointer; }
.fish-table-check input:disabled { cursor: default; }
.fish-table-card.is-complete .fish-table-check { color: #08705a; border-color: #70bca8; background: #ebfaf5; }
.fish-field-feedback { min-height: 1.2rem; margin: 10px 0 0; color: var(--dt-muted); font-size: 0.77rem; line-height: 1.45; }
.fish-step-actions { margin-top: 20px; }
.fish-step-actions .dt-feedback, .fish-subset-card .dt-feedback, .fish-deep-card .dt-feedback { margin-top: 12px; }

.fish-choice-card, .fish-deep-card { margin-top: 24px; padding: 22px; border: 1px solid #cfd8e8; border-radius: 18px; background: linear-gradient(135deg, #f6f8ff, #f9f5ff); }
.fish-choice-card h3, .fish-deep-card h3 { margin: 0 0 14px; }
.fish-kicker { margin: 0 0 5px; color: var(--dt-violet); font-size: 0.75rem; font-weight: 900; letter-spacing: 0.09em; text-transform: uppercase; }
.fish-choice-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.fish-choice-grid button { min-height: 74px; padding: 12px; border: 2px solid #cbd5e4; border-radius: 13px; color: var(--dt-ink); background: #fff; font: inherit; font-weight: 900; cursor: pointer; }
.fish-choice-grid button:hover, .fish-choice-grid button:focus-visible { border-color: var(--dt-blue); transform: translateY(-1px); }
.fish-choice-grid button.is-wrong { border-color: #d24e58; background: #fff1f2; }
.fish-choice-grid button.is-correct { border-color: #16886c; background: #ebfaf5; }
.fish-choice-grid small { display: block; margin-top: 5px; color: var(--dt-muted); font-weight: 750; }
.fish-inline-feedback { min-height: 1.45rem; margin: 13px 0 0; font-weight: 800; }
.fish-inline-feedback.wrong { color: #a32d35; }
.fish-inline-feedback.success { color: #08705a; }

.fish-subset-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; align-items: start; }
.fish-subset-card { min-width: 0; padding: 20px; border: 2px solid #d8e0eb; border-radius: 18px; background: #fbfcff; }
.fish-subset-card.blue { border-top-color: var(--fish-blue); }
.fish-subset-card.orange { border-top-color: var(--fish-orange); }
.fish-subset-card > header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 15px; }
.fish-subset-card h3 { margin: 0; }
.fish-color-dot { width: 34px; height: 34px; border: 4px solid #fff; border-radius: 50%; box-shadow: 0 0 0 1px #cdd5e2; }
.fish-color-dot.blue { background: var(--fish-blue); }
.fish-color-dot.orange { background: var(--fish-orange); }
.fish-deep-card { background: #fffaf0; }

.fish-tree-editor-card { padding: 20px; }
.fish-tree-reference span { border-radius: 11px; }
.fish-tree-builder-layout { display: grid; grid-template-columns: minmax(220px, 270px) minmax(0, 1fr); gap: 18px; align-items: start; }
.fish-tree-toolbox { position: sticky; top: 92px; max-height: calc(100vh - 110px); overflow-y: auto; scrollbar-width: thin; }
.fish-tree-toolbox .dt-palette { margin: 0; }
.fish-toolbox-hint { margin: 10px 4px 0; color: var(--dt-muted); font-size: 0.75rem; line-height: 1.45; }
.fish-tree-toolbox .dt-interaction-status { margin: 10px 0 0; }
.fish-tree-canvas { min-width: 0; }
.fish-tree-viewport { height: calc(100vh - 125px); min-height: 570px; max-height: 720px; }
.fish-tree-viewport .dt-tree-editor { min-height: 520px; }
.fish-tree-editor-card .dt-tree-node.leaf.peaceful { color: #08705a; border-color: #87cbb9; background: #edfaf6; }
.fish-tree-editor-card .dt-tree-node.leaf.hostile { color: #8b222b; border-color: #e0a0a5; background: #fff1f2; }
.fish-tree-editor-card .dt-tool.leaf.peaceful::before { color: var(--dt-safe); }
.fish-tree-editor-card .dt-tool.leaf.hostile::before { color: var(--dt-bites); }

.fish-text-label { display: block; margin-bottom: 7px; font-weight: 900; }
#algorithm-answer { width: 100%; resize: vertical; padding: 15px; border: 2px solid #cbd5e1; border-radius: 13px; color: var(--dt-ink); background: #fff; font: inherit; line-height: 1.6; }
#algorithm-answer:focus { outline: 4px solid rgba(40, 86, 198, 0.13); border-color: var(--dt-blue); }
.fish-text-meta { display: flex; justify-content: space-between; gap: 12px; margin: 7px 0 14px; color: var(--dt-muted); font-size: 0.77rem; }
.fish-semantic-feedback { margin-top: 14px; padding: 18px; border: 1px solid #b9c8df; border-radius: 13px; background: #f5f8ff; }
.fish-semantic-feedback.success { border-color: #70bca8; background: #ebfaf5; }
.fish-semantic-feedback.error { border-color: #d9949a; background: #fff1f2; }
.fish-semantic-feedback h3, .fish-semantic-feedback p { margin-top: 0; }
.fish-semantic-feedback ul { margin-bottom: 12px; }
.fish-help-details { margin-top: 16px; padding: 12px 15px; border-radius: 12px; background: #fff9df; }
.fish-help-details summary { color: #72561a; font-weight: 850; cursor: pointer; }
.fish-complete .dt-secondary-button { display: inline-flex; margin-top: 10px; text-decoration: none; }

.fish-extension { margin-top: 55px; border: 2px solid #d3c3f4; background: linear-gradient(180deg, rgba(249, 247, 255, 0.98), rgba(255, 255, 255, 0.96)); }
.fish-extension-badge { margin: -52px 0 25px; background: linear-gradient(135deg, #8256d8, #b0599e); box-shadow: 0 8px 20px rgba(112, 72, 207, 0.22); }

/* Nach der Einfuehrung bleibt die Seite ruhig; nur der aktive Reiter scrollt. */
.tabs-ready .decision-tree-shell {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  min-height: 650px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow: hidden;
}
/* Kopf und Reiterleiste behalten ihre Hoehe; nur der aktive Reiter fuellt den Rest. */
.tabs-ready .decision-tree-shell > * { flex-shrink: 0; }
.tabs-ready .topbar { margin-bottom: 4px; }
.tabs-ready .dt-fish-hero { margin: 2px auto 8px; }
.tabs-ready .dt-fish-hero h1 { font-size: clamp(1.55rem, 2.8vw, 2.45rem); line-height: 1.05; }
.tabs-ready .dt-fish-hero .dt-eyebrow { margin-bottom: 2px; font-size: 0.68rem; }
.tabs-ready .dt-fish-hero .dt-task-number { margin: 4px 0 0; font-size: 0.68rem; }
.tabs-ready .dt-fish-hero > p:not(.dt-eyebrow, .dt-task-number) { display: none; }
.tabs-ready .fish-save-status { display: none; }
.tabs-ready .fish-progress { position: static; flex: 0 0 auto; margin-bottom: 8px; }
.tabs-ready .fish-tab-panel {
  flex: 1 1 0;
  min-height: 0;
  margin: 0 auto;
  padding: clamp(14px, 1.7vw, 22px);
  overflow: auto;
  overscroll-behavior: contain;
  scroll-margin-top: 0;
  scrollbar-width: thin;
}
.tabs-ready .fish-step-heading { gap: 12px; margin-bottom: 13px; }
.tabs-ready .fish-step-heading h2 { font-size: clamp(1.25rem, 2vw, 1.7rem); }
.tabs-ready .fish-step-heading p { margin-top: 4px; line-height: 1.42; }
.tabs-ready .fish-dataset-summary, .tabs-ready .fish-tree-reference { margin-bottom: 12px; }
.tabs-ready .fish-training-sticky { top: 0; max-height: calc(100dvh - 255px); }
.tabs-ready .fish-table-card { padding: 12px; }
.tabs-ready .fish-table-header { margin-bottom: 8px; }
.tabs-ready .fish-table th, .tabs-ready .fish-table td { padding-block: 5px; }
.tabs-ready .fish-table-check { min-height: 40px; margin-top: 9px; padding: 7px 10px; }
.tabs-ready .fish-subset-card, .tabs-ready .fish-deep-card { margin-top: 0; padding: 14px; }
.tabs-ready .fish-subset-card > header { margin-bottom: 10px; }
.tabs-ready .fish-subset-card .fish-grid,
.tabs-ready .fish-deep-card .fish-grid { margin-bottom: 10px; }
.tabs-ready .fish-subset-panel .fish-table-grid.compact,
.tabs-ready #letzter-split .fish-table-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tabs-ready .fish-tree-editor-card { padding: 13px; }
.tabs-ready .fish-tree-reference > * { padding: 6px 10px; }
.tabs-ready .fish-tree-toolbox { top: 0; max-height: calc(100dvh - 330px); }
.tabs-ready .fish-tree-viewport { height: calc(100dvh - 365px); min-height: 315px; max-height: 545px; }
.tabs-ready .fish-tree-viewport .dt-tree-editor { min-height: 285px; }
.tabs-ready .fish-extension { margin-top: 0; }
.tabs-ready .fish-extension-badge { margin: 0 0 12px; }
.entropy-intro { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 22px; align-items: center; }
.entropy-intro h3 { font-size: 1.4rem; }
.entropy-intro p { color: var(--dt-muted); line-height: 1.65; }
.entropy-extremes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.entropy-extremes article { padding: 20px; border: 1px solid #d8e0eb; border-radius: 17px; background: #fff; text-align: center; }
.entropy-extremes article > span { display: block; margin-bottom: 12px; color: var(--dt-safe); letter-spacing: 4px; }
.entropy-extremes .mixed > span { color: var(--dt-bites); background: linear-gradient(90deg, var(--dt-safe) 50%, var(--dt-bites) 50%); background-clip: text; -webkit-text-fill-color: transparent; }
.entropy-extremes h4, .entropy-extremes p { margin: 5px 0; }
.entropy-extremes strong { display: block; margin: 12px 0 5px; color: var(--dt-violet); font-size: 1.3rem; }
.entropy-extremes small { color: var(--dt-muted); }
.entropy-formula-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 24px 0; }
.entropy-formula-grid article { padding: 22px; border: 1px solid #d8e0eb; border-radius: 17px; background: #fff; }
.math-display { overflow-x: auto; margin: 15px 0; padding: 18px; border-radius: 12px; color: #243d77; background: #eef3ff; font-family: Cambria, Georgia, serif; font-size: clamp(1rem, 2.3vw, 1.45rem); text-align: center; }
.entropy-formula-grid details summary { color: var(--dt-blue); font-weight: 800; cursor: pointer; }
.entropy-example { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 24px; border-radius: 18px; background: #fff; box-shadow: inset 0 0 0 1px #d8e0eb; }
.entropy-example h3 { margin-top: 0; }
.entropy-calculation { display: grid; gap: 8px; align-content: center; }
.entropy-calculation > * { padding: 10px 13px; border-radius: 10px; background: #f0f4fb; }
.entropy-calculation strong { color: #4c348d; }
.entropy-example blockquote { grid-column: 1 / -1; margin: 0; padding: 16px 20px; border-left: 5px solid #d5a52d; border-radius: 10px; background: #fff9df; font-weight: 850; }

.entropy-quiz, .fish-final-quiz { margin-top: 25px; padding: 23px; border: 1px solid #d4dcea; border-radius: 18px; background: #fff; }
.entropy-quiz-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.entropy-quiz-heading h3 { margin: 0; font-size: 1.45rem; }
.entropy-quiz-heading > p { color: var(--dt-muted); font-weight: 850; }
.quiz-question { margin: 18px 0; padding: 18px; border: 1px solid #dce3ed; border-radius: 14px; }
.quiz-question.is-correct { border-color: #70bca8; background: #f0fbf7; }
.quiz-question.is-wrong { border-color: #d9949a; background: #fff5f5; }
.quiz-question legend { padding: 0 5px; font-weight: 900; line-height: 1.45; }
.quiz-options { display: grid; gap: 8px; margin-top: 10px; }
.quiz-option { display: flex; align-items: flex-start; gap: 9px; padding: 9px 11px; border-radius: 9px; background: rgba(240, 244, 251, 0.75); cursor: pointer; }
.quiz-option input { margin-top: 3px; accent-color: var(--dt-blue); }
.quiz-item-feedback { min-height: 1.2rem; margin: 10px 0 0; font-size: 0.82rem; font-weight: 800; }
.quiz-summary { margin-top: 18px; padding: 18px; border-radius: 14px; background: #edf3ff; }
.quiz-summary h3 { margin-top: 0; }
.quiz-summary ol { display: grid; gap: 11px; padding-left: 22px; }
.quiz-summary strong { display: block; color: #3151a1; }

@media (max-width: 1050px) {
  .fish-intro-workspace { grid-template-columns: 1fr; }
  .fish-first-layout { grid-template-columns: 1fr; }
  .fish-training-sticky { position: static; max-height: none; overflow: visible; }
  .fish-training-sticky .fish-grid { grid-template-columns: repeat(5, minmax(86px, 1fr)); }
  .fish-grid { grid-template-columns: repeat(5, minmax(86px, 1fr)); }
  .fish-subset-layout, .entropy-intro { grid-template-columns: 1fr; }
  .tabs-ready .fish-first-layout { grid-template-columns: minmax(245px, 285px) minmax(0, 1fr); }
  .tabs-ready .fish-training-sticky { position: sticky; max-height: calc(100dvh - 255px); overflow-y: auto; }
  .tabs-ready .fish-training-sticky .fish-grid { grid-template-columns: repeat(2, minmax(78px, 1fr)); }
  .fish-progress { flex-wrap: wrap; }
  .fish-progress button { gap: 6px; padding: 7px 8px; }
}

@media (max-width: 900px) {
  .fish-tree-builder-layout { grid-template-columns: 1fr; }
  .fish-tree-toolbox { position: static; max-height: none; overflow: visible; }
  .fish-tree-toolbox .dt-palette-buttons { display: flex; flex-wrap: wrap; }
  .fish-tree-viewport { height: 560px; min-height: 480px; }
}

@media (max-width: 760px) {
  .fish-intro-progress { flex-basis: 100%; }
  .fish-intro-progress span { white-space: normal; }
  .intro-visual-top { grid-template-columns: 1fr; }
  .intro-fish-group { grid-template-columns: repeat(3, minmax(64px, 1fr)); }
  .intro-fish-groups { grid-template-columns: 1fr; }
  .intro-fish-groups .intro-fish-group { grid-template-columns: repeat(3, minmax(62px, 1fr)); }
  .fish-progress button { min-width: 0; flex: 1 1 0; justify-content: center; padding: 8px 4px; font-size: 0; }
  .fish-progress button span { font-size: 0.8rem; }
  .fish-step { padding: 18px 14px; border-radius: 17px; }
  .fish-step-heading { display: grid; gap: 10px; }
  .fish-training-sticky .fish-grid { grid-template-columns: repeat(3, minmax(82px, 1fr)); }
  .fish-grid { grid-template-columns: repeat(3, minmax(82px, 1fr)); }
  .fish-table-grid, .fish-choice-grid, .entropy-formula-grid, .entropy-example { grid-template-columns: 1fr; }
  .entropy-example blockquote { grid-column: auto; }
  .fish-text-meta { display: grid; }
  .fish-tree-viewport { height: 500px; min-height: 440px; }
}

@media (max-width: 700px), (max-height: 649px) {
  .tabs-ready .decision-tree-shell { height: auto; min-height: 100vh; overflow: visible; }
  .tabs-ready .fish-tab-panel { flex: 0 0 auto; height: auto; min-height: 0; overflow: visible; }
  .tabs-ready .fish-first-layout { grid-template-columns: 1fr; }
  .tabs-ready .fish-training-sticky { position: static; max-height: none; overflow: visible; }
  .tabs-ready .fish-tree-toolbox { position: static; max-height: none; overflow: visible; }
}

@media (max-width: 900px) {
  .tabs-ready .fish-subset-panel .fish-table-grid.compact,
  .tabs-ready #letzter-split .fish-table-grid.compact { grid-template-columns: 1fr; }
}

@media (max-width: 430px) {
  .fish-training-sticky .fish-grid { grid-template-columns: repeat(2, minmax(80px, 1fr)); }
  .fish-grid { grid-template-columns: repeat(2, minmax(80px, 1fr)); }
  .entropy-extremes { grid-template-columns: 1fr; }
  .fish-subset-card, .fish-choice-card, .fish-deep-card, .entropy-quiz { padding: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-tree-unsplit,
  .intro-tree-split,
  .intro-fish-groups .intro-fish-group,
  .intro-fish-token.is-error,
  .intro-table td[data-intro-cell].is-current { animation: none; }
}