.kinship-tool {
  --n-ink: #172235;
  --n-muted: #5e6b7d;
  --n-paper: #f8f5ee;
  --n-card: #fffdf8;
  --n-line: #d5d4cc;
  --n-accent: #b85c38;
  --n-accent-soft: #f2d7c7;
  --n-blue: #315e75;
  --n-focus: #1d7895;
  --n-shadow: rgba(23, 34, 53, .12);

  color: var(--n-ink);
  background: var(--n-paper);
  border: 1px solid var(--n-line);
  border-radius: 1.25rem;
  box-shadow: 0 1.5rem 3rem var(--n-shadow);
  overflow: hidden;
}

.theme-dark .kinship-tool {
  --n-ink: #f3efe6;
  --n-muted: #b8b8aa;
  --n-paper: #15191e;
  --n-card: #1d2429;
  --n-line: #3b464b;
  --n-accent: #ed946d;
  --n-accent-soft: #56352d;
  --n-blue: #91c3cf;
  --n-focus: #8dd4e0;
  --n-shadow: rgba(0, 0, 0, .3);

}

.kinship-layout {
  display: grid;
  grid-template-columns: minmax(16rem, .8fr) minmax(20rem, 1.2fr);
  min-height: 30rem;
}

.kinship-controls {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  background: var(--n-card);
  border-right: 1px solid var(--n-line);
}

.person-fields,
.generation-fieldset {
  display: grid;
  gap: .65rem;
}

.field-label,
.generation-fieldset legend,
.preset-label {
  color: var(--n-muted);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

input {
  box-sizing: border-box;
  width: 100%;
  min-height: 2.75rem;
  padding: .7rem .8rem;
  color: var(--n-ink);
  background: var(--n-paper);
  border: 1px solid var(--n-line);
  border-radius: .5rem;
  font: inherit;
}

input:focus-visible,
button:focus-visible {
  outline: 3px solid var(--n-focus);
  outline-offset: 2px;
}

.generation-fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.generation-fieldset legend {
  margin-bottom: .15rem;
}

.control-help {
  margin: 0 0 .35rem;
  color: var(--n-muted);
  font-size: .85rem;
  line-height: 1.45;
}

.generation-row {
  display: grid;
  grid-template-columns: minmax(5rem, 1fr) 2rem 3.6rem 2rem minmax(2.8rem, auto);
  align-items: center;
  gap: .35rem;
}

.generation-name {
  overflow: hidden;
  color: var(--n-ink);
  font-size: .9rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.generation-input {
  min-height: 2.35rem;
  padding: .35rem;
  text-align: center;
}

.step-button,
.preset-list button,
.reset-button {
  color: var(--n-ink);
  background: var(--n-paper);
  border: 1px solid var(--n-line);
  border-radius: .45rem;
  cursor: pointer;
  font: inherit;
}

.step-button {
  width: 2rem;
  height: 2rem;
  font-size: 1.2rem;
  line-height: 1;
}

.step-button:hover,
.preset-list button:hover,
.reset-button:hover {
  border-color: var(--n-accent);
}

.generation-unit {
  color: var(--n-muted);
  font-size: .8rem;
  white-space: nowrap;
}

.preset-section {
  display: grid;
  gap: .7rem;
}

.preset-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.preset-list button {
  padding: .55rem .7rem;
  font-size: .8rem;
}

.control-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--n-line);
}

.local-note {
  max-width: 15rem;
  margin: 0;
  color: var(--n-muted);
  font-size: .75rem;
  line-height: 1.4;
}

.reset-button {
  padding: .55rem .75rem;
  white-space: nowrap;
}

.kinship-result {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(1rem, 4vw, 2.5rem);
  background: var(--n-paper);
}

.scene-frame {
  min-height: 15rem;
  padding: .5rem;
  background: var(--n-card);
  border: 1px solid var(--n-line);
  border-radius: .9rem;
}

.path-explorer {
  min-height: 15rem;
  padding: 1.25rem;
  background: var(--n-card);
  border: 1px solid var(--n-line);
  border-radius: .75rem;
}

.explorer-heading {
  margin-bottom: 1rem;
}

.explorer-label,
.explanation-label,
.calculation-label {
  margin: 0;
  color: var(--n-muted);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.explorer-help {
  max-width: 34rem;
  margin: .35rem 0 0;
  color: var(--n-muted);
  font-size: .8rem;
  line-height: 1.45;
}

.path-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.path-column {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-width: 0;
}

.path-node {
  display: grid;
  gap: .2rem;
  width: 100%;
  min-height: 3.25rem;
  padding: .7rem .8rem;
  color: var(--n-ink);
  background: var(--n-paper);
  border: 1px solid var(--n-line);
  border-radius: .6rem;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.path-node:hover,
.path-node.is-active {
  border-color: var(--n-accent);
  box-shadow: 0 0 0 2px var(--n-accent-soft);
}

.ancestor-path-node {
  background: var(--n-accent-soft);
  border-color: var(--n-accent);
}

.path-node-label {
  overflow: hidden;
  font-size: .9rem;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.path-node-role {
  color: var(--n-muted);
  font-size: .72rem;
}

.path-connector {
  display: block;
  height: 1.25rem;
  color: var(--n-blue);
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.25rem;
  text-align: center;
}

.path-inspector {
  min-height: 1.25rem;
  margin: 1rem 0 0;
  padding-top: .75rem;
  color: var(--n-muted);
  border-top: 1px solid var(--n-line);
  font-size: .8rem;
  line-height: 1.45;
}

.result-summary {
  padding: 1.25rem .25rem .25rem;
}

.result-headline {
  margin: 0;
  color: var(--n-ink);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 800;
  line-height: 1.25;
}

.result-facts {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  margin-top: .75rem;
  color: var(--n-muted);
  font-size: .85rem;
}

.result-facts strong {
  color: var(--n-accent);
  font-size: 1.25rem;
}

.result-explanation {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--n-card);
  border: 1px solid var(--n-line);
  border-radius: .75rem;
}

.calculation-label {
  margin: 1rem 0 0;
  color: var(--n-muted);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.path-list {
  display: grid;
  gap: .5rem;
}

.path-list p {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 0;
  color: var(--n-muted);
  font-size: .85rem;
}

.path-list strong {
  color: var(--n-ink);
}

.path-list strong:last-child {
  padding: .2rem .45rem;
  background: var(--n-accent-soft);
  border-radius: .3rem;
}

.result-detail {
  margin: .85rem 0 0;
  color: var(--n-muted);
  font-size: .8rem;
  line-height: 1.5;
}

.result-detail strong {
  color: var(--n-ink);
}

.error-message {
  margin: 1rem 0 0;
  padding: .75rem;
  color: var(--n-ink);
  background: var(--n-accent-soft);
  border-left: 4px solid var(--n-accent);
  font-size: .85rem;
}

@media (max-width: 720px) {
  .kinship-layout {
    display: flex;
    flex-direction: column;
  }

  .kinship-controls {
    border-right: 0;
    border-bottom: 1px solid var(--n-line);
  }

  .kinship-result {
    padding-top: 1.25rem;
  }

  .path-columns {
    grid-template-columns: 1fr;
  }
}