/* DESIGN TOKENS */
:root {
  --bg: #0f1221;
  --card: #161a2b;
  --card-2: #1b2036;
  --text: #e7e9ff;
  --muted: #a6accd;
  --accent: #7b6ef6;
  --accent-2: #6356d2;
  --success: #27ae60;
  --danger: #d7263d;
  --ring: #8ea0ff;
  --shadow: 0 8px 24px rgba(4, 8, 26, .35), 0 2px 6px rgba(4, 8, 26, .2);

  /* Tell browsers the page prefers dark UI for native widgets (affects select popups) */
  color-scheme: dark;
}

/* BASE */
* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Gill Sans", "Helvetica Neue", Arial;
  background: radial-gradient(1200px 600px at 20% -10%, #20264b 0%, #0f1221 55%) no-repeat fixed, var(--bg);
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: linear-gradient(180deg, rgba(15, 18, 33, .95), rgba(15, 18, 33, .8));
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.site-header h1 {
  padding-left: 40%;
  margin: 0;
  font-weight: 800;
  letter-spacing: .2px;
  font-size: clamp(20px, 2.4vw, 28px);
}

.header-actions { display: flex; gap: 8px; }

/* TOOLBAR */
.toolbar { display: none; }

/* STAGE */
.stage {
  position: relative;
  overflow: visible;
  max-width: 1500px;
  margin: 12px auto 22px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .03), rgba(255, 255, 255, .02));
  border: 1px solid rgba(255, 255, 255, .08);
  box-shadow: var(--shadow);
}

.zoom-content { position: relative; transform: none; }

.tree-lines { position: absolute; inset: 0; pointer-events: none; }

/* GRID */
.family-tree-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 280px);
  grid-auto-rows: auto;
  gap: 32px 40px;
  justify-items: center;
  align-items: start;
  padding: 28px 32px 40px;
  width: max-content;
  margin: 0 auto;
}

/* CARDS */
.grandparent-pair {
  grid-row: 1;
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 18px 18px 20px;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.pair-content { display: flex; gap: 16px; }

.pair-title { margin: 0; color: var(--muted); }

.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 280px;
  padding: 16px;
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 14px;
}

.card-title { margin: 0; color: var(--muted); }

/* GRID POSITIONS */
.parent-box { display: flex; justify-content: center; align-items: center; }

#parent1-box { grid-column: 2 / 3; grid-row: 2; }

#parent2-box { grid-column: 3 / 4; grid-row: 2; }

.child-box { grid-column: 2 / 4; grid-row: 3; display: flex; justify-content: center; }

/* CANVAS */
canvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #0d1020;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 12px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .03), 0 8px 16px rgba(0, 0, 0, .35);
}

/* BUTTONS */
.btn {
  padding: 8px 12px;
  border: none;
  border-radius: 10px;
  background: var(--card-2);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  transition: transform .06s ease, background .18s ease, box-shadow .18s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .25);
}

.btn:hover { transform: translateY(-1px); }

.btn:active { transform: translateY(0) scale(.98); }

.btn:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }

.btn.primary { background: var(--accent); }

.btn.primary:hover { background: var(--accent-2); }

.btn.love { background: linear-gradient(90deg, #f65c9a, #f29b64); }

.btn.love:hover { filter: brightness(1.05); }

.btn.success { background: var(--success); }

.btn.success:hover { filter: brightness(1.05); }

.btn.danger { background: var(--danger); }

.btn.subtle { background: #222844; }

/* TRAIT / MUTATION UI */
.traitText {
  margin: 0;
  align-self: stretch;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 10px;
}

.traits-display {
  margin: 0;
  align-self: stretch;
  padding: 10px 12px;
  font-size: 14px;
  background: rgba(39, 174, 96, .12);
  border: 1px solid rgba(39, 174, 96, .25);
  border-radius: 10px;
}

.traitSelect { align-self: stretch; }

.traitSelect label {
  display: block;
  margin: 6px 0 6px;
  color: var(--muted);
  font-size: 13px;
}

/* multi-select buttons (body & mutations) */
.dropdownTraits { display: flex; flex-wrap: wrap; gap: 6px; }

.dropdownTraits button {
  padding: 6px 10px;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  transition: background .15s ease, border-color .15s ease, transform .06s ease;
}

.dropdownTraits button:hover { background: rgba(255, 255, 255, .08); }

.dropdownTraits button.activeTrait {
  background: rgba(123, 110, 246, .25);
  border-color: var(--accent);
}

/* single-select dropdowns */
.selectRow {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 8px 0;
}

.selectRow .selectWrap { display: flex; align-items: center; gap: 8px; }

.selectRow .selectWrap span { color: var(--muted); font-size: 13px; width: 72px; }

.selectRow select {
  appearance: none;
  padding: 8px 10px;
  background-color: var(--card-2); /* was rgba(255,255,255,.04) */
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 10px;
  font-weight: 600;
}

.selectRow select:focus { outline: 2px solid var(--ring); outline-offset: 2px; }

/* Native dropdown popup (open menu) */
.selectRow select option,
.selectRow select optgroup {
  background-color: var(--card);
  color: var(--text);
}

.selectRow select option:checked {
  background-color: rgba(123, 110, 246, .35);
  color: var(--text);
}

.selectRow select option:hover {
  background-color: rgba(123, 110, 246, .20);
}

/* purple mutation chips in text */
.mut-label { color: var(--muted); }

.mut-tag {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: .2px;
  margin-left: 4px;
}

/* FOOTER */
.site-footer { text-align: center; color: var(--muted); padding: 10px 0 24px; }

/* STATE */
button { font-size: 14px; }

button:disabled { opacity: .6; cursor: not-allowed; }

/* MOBILE OVERRIDES */
.mobile-zoom .toolbar { display: none !important; }

.mobile-zoom .stage {
  height: min(80vh, 900px);
  overflow: hidden;
  touch-action: none;
}

.mobile-zoom .zoom-content { will-change: transform; }

.mobile-zoom .family-tree-grid { padding-bottom: 120px; }