:root {
  --paper: #f7f2e9;
  --paper-deep: #efe6d4;
  --ink: #2b2420;
  --ink-soft: #5a4f45;
  --accent: #1f5f5b;
  --accent-deep: #143f3d;
  --accent-soft: #cfe4e0;
  --line: #d9cdb8;
  --card-bg: #fffdf8;
  --shadow: 0 6px 18px rgba(43, 36, 32, 0.12);

  --gen-1: #7a3b3b;
  --gen-2: #a8592f;
  --gen-3: #b98a2a;
  --gen-4: #7a8c2e;
  --gen-5: #2e8c6a;
  --gen-6: #2c7a94;
  --gen-7: #3f5aa8;
  --gen-8: #6b4a9a;

  color-scheme: light;
}

[data-theme="dark"] {
  --paper: #17191c;
  --paper-deep: #101214;
  --ink: #ece6da;
  --ink-soft: #b7ada0;
  --accent: #6bbdb5;
  --accent-deep: #9fd8d1;
  --accent-soft: #233634;
  --line: #33322d;
  --card-bg: #202225;
  --shadow: 0 6px 22px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  background: var(--paper);
  color: var(--ink);
}

button { font-family: inherit; }

/* ---------- Hero ---------- */

.hero[hidden] { display: none; }

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
  position: relative;
  background:
    radial-gradient(ellipse at top, var(--paper-deep), var(--paper) 60%);
}

.hero-inner { max-width: 640px; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin: 0 0 1.1rem;
  letter-spacing: -0.01em;
}

.lede {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 auto 2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: var(--paper);
}
.btn-primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); }

.btn-ghost {
  background: transparent;
  color: var(--accent);
}
.btn-ghost:hover { background: var(--accent-soft); }

.hero-hint {
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  opacity: 0.8;
}

.hero-scroll-cue {
  position: absolute;
  bottom: 1.75rem;
  font-size: 1.3rem;
  color: var(--accent);
  animation: bob 2s ease-in-out infinite;
}

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ---------- History dialog ---------- */

dialog {
  max-width: 620px;
  width: calc(100% - 2.5rem);
  border: none;
  border-radius: 14px;
  padding: 2rem 2.25rem 2.25rem;
  background: var(--card-bg);
  color: var(--ink);
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(20, 16, 12, 0.55); }
dialog h2 { margin-top: 0; color: var(--accent-deep); }
dialog p { line-height: 1.65; color: var(--ink-soft); font-size: 0.98rem; }
dialog .closing { font-style: italic; color: var(--ink); }

.dialog-close {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--ink-soft);
  line-height: 1;
}
.dialog-close:hover { color: var(--ink); }

/* ---------- Tree view ---------- */

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

.tree-view {
  height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--card-bg);
  border-bottom: 1px solid var(--line);
  z-index: 20;
  flex-wrap: wrap;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card-bg);
  color: var(--ink);
  font-size: 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.icon-btn:hover { background: var(--accent-soft); border-color: var(--accent); }

.nav-history-btn {
  width: auto;
  gap: 0.4rem;
  padding: 0 0.85rem;
  font-size: 0.85rem;
  font-family: inherit;
  white-space: nowrap;
}

.toolbar-group { display: flex; gap: 0.4rem; margin-left: auto; }

.search-cont {
  flex: 1;
  max-width: 360px;
  min-width: 180px;
}
.search-cont input {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-size: 0.95rem;
  font-family: inherit;
}
.search-cont input:focus {
  outline: none;
  border-color: var(--accent);
}

.legend {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  color: var(--ink-soft);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  z-index: 15;
}
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid transparent;
  font: inherit;
  color: inherit;
  transition: transform 0.12s ease, border-color 0.12s ease;
}
.legend-item:hover {
  transform: translateY(-1px);
  border-color: var(--gen-c, var(--accent));
}
.legend-item.active {
  border-color: var(--gen-c, var(--accent));
  font-weight: 700;
  color: var(--ink);
}
.legend-swatch {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

#FamilyChart {
  flex: 1;
  width: 100%;
  background: var(--paper);
  position: relative;
}

/* family-chart draws connector lines with a hardcoded stroke="#fff"
   attribute — invisible against a light background. A stylesheet rule
   always wins over a presentation attribute, so this overrides it. */
.f3 .link {
  stroke: var(--ink-soft);
  opacity: 0.6;
}
.f3 .link.f3-path-to-main {
  stroke: var(--accent);
  opacity: 1;
}

/* ---------- Custom family-chart cards ---------- */

.fc-card {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  background: var(--card-bg);
  border: 2px solid var(--gen-c, var(--accent));
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  overflow: hidden;
}
.fc-card:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 24px rgba(0,0,0,0.18);
}
.fc-card.is-main {
  border-width: 3px;
  box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow);
}
.fc-card.is-dimmed {
  opacity: 0.28;
}
.fc-card.is-focused {
  transform: scale(1.04);
  box-shadow: 0 0 0 3px var(--gen-c, var(--accent)), var(--shadow);
}
.fc-card-name {
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.2;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.fc-card-meta {
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin-top: 0.15rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.fc-gen-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gen-c, var(--accent));
  flex-shrink: 0;
}
/* ---------- Detail panel ---------- */

.detail-panel {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(360px, 90vw);
  background: var(--card-bg);
  border-left: 1px solid var(--line);
  box-shadow: -8px 0 24px rgba(0,0,0,0.12);
  transform: translateX(100%);
  transition: transform 0.28s ease;
  z-index: 30;
  padding: 1.75rem 1.5rem;
  overflow-y: auto;
}
.detail-panel.open { transform: translateX(0); }

.detail-panel h2 {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
  padding-right: 1.5rem;
}
.detail-gen-badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  color: #fff;
  background: var(--gen-c, var(--accent));
  margin-bottom: 1rem;
}
.detail-section { margin-top: 1.1rem; }
.detail-section h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin: 0 0 0.4rem;
}
.detail-list { list-style: none; margin: 0; padding: 0; }
.detail-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  font-size: 0.92rem;
}
.detail-list li:hover { color: var(--accent); }
.detail-note {
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-style: italic;
  line-height: 1.4;
}
.detail-actions { margin-top: 1.3rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.detail-actions button {
  font-size: 0.85rem;
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}
.detail-actions button:hover { background: var(--accent-soft); }

/* family-chart's own autocomplete dropdown, restyled to match */
.f3-autocomplete-cont { position: relative; }
.f3-autocomplete-cont ul {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  max-height: 320px;
  overflow-y: auto;
  z-index: 40;
  list-style: none;
  margin: 0;
  padding: 0.3rem;
}
.f3-autocomplete-cont li {
  padding: 0.45rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--ink);
}
.f3-autocomplete-cont li:hover { background: var(--accent-soft); }

@media (max-width: 640px) {
  .toolbar { gap: 0.5rem; }
  .toolbar-group { margin-left: 0; }
  .search-cont { order: 3; max-width: none; flex-basis: 100%; }
  .legend { display: none; }
}