:root {
  --paper: #f7f3ea;
  --paper-raised: #fffdf8;
  --ink: #23201c;
  --ink-soft: #5b544b;
  --rule: #d9d0bf;
  --indigo: #2f4a6d;
  --indigo-ink: #ffffff;
  --vermilion: #b0412e;
  --warn-bg: #fbeee9;
  --notice-bg: #eef2f6;
  --chart-paper: #faf8f2;
  --focus: #2f4a6d;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  --sans: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  color-scheme: light dark;
}

@page a4-landscape { size: A4 landscape; margin: 10mm; }
@page a4-portrait { size: A4 portrait; margin: 10mm; }
@page a3-landscape { size: A3 landscape; margin: 10mm; }
@page a3-portrait { size: A3 portrait; margin: 10mm; }

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1c1a17;
    --paper-raised: #26231f;
    --ink: #eee8dc;
    --ink-soft: #b9b0a2;
    --rule: #4a443b;
    --indigo: #8fb0d8;
    --indigo-ink: #10161f;
    --vermilion: #ef8f7c;
    --warn-bg: #3a2620;
    --notice-bg: #1f2833;
    --focus: #8fb0d8;
  }
}

* { box-sizing: border-box; }

/* display を指定した要素でも hidden 属性を優先する */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.7 var(--sans);
  overflow-x: hidden;
}

button, select, input, textarea {
  font: inherit;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 6px;
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  color: var(--ink);
}
button, select { cursor: pointer; }
input, textarea { width: 100%; padding: 7px 10px; }
textarea { resize: vertical; min-height: 88px; }
input[type="radio"], input[type="checkbox"] { width: 24px; min-height: 24px; accent-color: var(--indigo); }
button {
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--ink-soft); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.primary { background: var(--indigo); border-color: var(--indigo); color: var(--indigo-ink); }
button.quiet { background: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--rule);
}
.brand {
  margin: 0;
  font: 600 26px/1.2 var(--serif);
  letter-spacing: 0.2em;
}
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; max-width: 100%; }
body:not(.has-data) .needs-data { display: none; }

.status {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding: 8px 20px;
  font-size: 16px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule);
}
.badge {
  color: var(--vermilion);
  font-weight: 700;
}
.badge::before { content: "● "; }
.status-note { font-size: 15px; }
.change-message { color: var(--indigo); }

.notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin: 12px 20px 0;
  padding: 12px 16px;
  border-left: 4px solid var(--indigo);
  background: var(--notice-bg);
  border-radius: 4px;
}
.notice p { margin: 0; flex: 1 1 320px; }
.notice ul { margin: 0; padding-left: 1.2em; flex-basis: 100%; }
.notice-warn { border-left-color: var(--vermilion); background: var(--warn-bg); }

main { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.workspace { display: flex; flex: 1; min-width: 0; min-height: 0; }

.welcome {
  max-width: 40em;
  margin: 48px auto;
  padding: 0 20px;
}
.welcome h2 { font: 600 30px/1.5 var(--serif); margin: 0 0 16px; }
.welcome-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 8px; }
.hint { color: var(--ink-soft); font-size: 15px; margin: 8px 0; }

.chart { display: none; flex: 1; min-width: 0; flex-direction: column; padding: 12px 20px 0; min-height: 0; }
.has-data .chart { display: flex; }
.has-data .welcome { display: none; }

.chart-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; }
.chart-head h2 { margin: 0; font: 600 22px/1.4 var(--serif); }
.chart-options { display: flex; flex-wrap: wrap; gap: 8px 14px; }
.chart-options label { display: flex; align-items: center; gap: 8px; font-size: 16px; }

.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin: 12px 0 0; border-bottom: 1px solid var(--rule); }
.tabs button {
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  background: transparent;
  font-family: var(--serif);
  font-size: 19px;
}
.tabs button[aria-selected="true"] { border-bottom-color: var(--indigo); color: var(--indigo); font-weight: 700; }

.viewport-frame {
  position: relative;
  flex: 1;
  min-height: 60vh;
  margin-top: 12px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--chart-paper);
  overflow: hidden;
}
.viewport {
  position: absolute;
  inset: 0;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
}
.viewport:active { cursor: grabbing; }
.chart-canvas { position: absolute; top: 0; left: 0; transform-origin: 0 0; }
.chart-canvas svg { display: block; }
.chart-canvas g[data-reference="true"], .chart-canvas g[data-reference="false"] { cursor: pointer; }
.chart-canvas g.is-highlighted rect { animation: highlight 2.4s ease-out; }
.chart-canvas g.is-selected rect {
  stroke: #b0412e;
  stroke-width: 4px;
  filter: drop-shadow(0 0 1px #fff);
}
@keyframes highlight {
  0%, 60% { stroke: #b0412e; stroke-width: 4px; }
  100% { stroke-width: 1.4px; }
}

.zoom {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: flex;
  gap: 6px;
}
.zoom button { min-width: 48px; background: var(--paper-raised); box-shadow: 0 1px 3px #0002; }

.unplaced { margin: 4px 0 12px; }
.unplaced summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; }

.person-panel {
  width: min(390px, 42vw);
  flex: 0 0 min(390px, 42vw);
  padding: 16px 20px calc(20px + env(safe-area-inset-bottom));
  border-left: 1px solid var(--rule);
  background: var(--paper-raised);
  overflow-y: auto;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.panel-head h2, .app-dialog h2 { margin: 0; font: 600 24px/1.4 var(--serif); }
.person-summary { display: grid; grid-template-columns: 6em 1fr; gap: 7px 10px; margin: 0 0 16px; }
.person-summary dt { color: var(--ink-soft); }
.person-summary dd { margin: 0; }
.person-note { padding: 10px 12px; border-left: 3px solid var(--rule); background: var(--paper); white-space: pre-wrap; }
.panel-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.panel-actions .danger-link { grid-column: 1 / -1; color: var(--vermilion); }

.entry-form, .app-dialog form { display: grid; gap: 14px; }
.entry-form label, .app-dialog label, .person-fields > label, .source-fields > label, .new-source-fields > label {
  display: grid;
  gap: 4px;
  font-size: 16px;
  font-weight: 650;
}
fieldset { min-width: 0; margin: 0; padding: 12px; border: 1px solid var(--rule); border-radius: 6px; }
legend { padding: 0 6px; font: 600 18px/1.4 var(--serif); }
.person-fields, .new-source-fields, .conditional-fields { display: grid; gap: 12px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
/* 異体字ボタンとパレットに幅が要るので、氏・名は横に並べず縦に積む */
.field-row:has(.variant-field) { grid-template-columns: 1fr; }
.variant-field { display: grid; min-width: 0; gap: 4px; }
.variant-field > label { font-size: 16px; font-weight: 650; }
.variant-input-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px; }
.variant-input { min-width: 0; font-family: var(--serif); }
.variant-open { padding-inline: 10px; white-space: nowrap; }
.variant-palette {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
  font-weight: 400;
}
.variant-palette-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.variant-palette-head strong { font-family: var(--serif); }
.variant-close { min-height: 44px; padding-inline: 10px; }
.variant-palette-content { display: grid; gap: 10px; margin-top: 8px; }
.variant-group h3 { margin: 0 0 4px; font: 600 15px/1.4 var(--sans); color: var(--ink-soft); }
.variant-candidates { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: 6px; }
.variant-candidate {
  min-width: 44px;
  min-height: 64px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  line-height: 1.1;
}
.variant-glyph { font-size: 30px; }
.variant-candidate small { max-width: 100%; overflow: hidden; font: 10px/1.2 var(--sans); color: var(--ink-soft); text-overflow: ellipsis; }
.variant-message { margin: 0; color: var(--ink-soft); font-size: 14px; }
.choice { display: flex !important; grid-template-columns: none; align-items: center; gap: 8px !important; min-height: 44px; font-weight: 500 !important; }
.date-preview { min-height: 1.4em; color: var(--ink-soft); font-size: 14px; font-weight: 400; }
.date-preview.is-warning { color: var(--vermilion); }
.date-preview.is-error, .form-error { color: var(--vermilion); }
.source-fields { display: grid; gap: 12px; }
.new-source-fields { margin-top: 10px; padding-top: 12px; border-top: 1px solid var(--rule); }
.form-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.form-actions button { flex: 1 1 140px; }
button.danger { color: #fff; background: var(--vermilion); border-color: var(--vermilion); }

.app-dialog {
  width: min(620px, calc(100vw - 24px));
  max-height: min(90dvh, 850px);
  padding: 20px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--paper-raised);
  color: var(--ink);
  overflow-y: auto;
}
.app-dialog::backdrop { background: #17130f99; backdrop-filter: blur(2px); }
.confirm-dialog { width: min(500px, calc(100vw - 24px)); }
.print-dialog { width: min(680px, calc(100vw - 24px)); }
.print-settings { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 10px; }
.print-summary { margin: 0; padding: 10px 12px; border-left: 4px solid var(--indigo); background: var(--notice-bg); }
.print-guidance { font-size: 15px; color: var(--ink-soft); }
.print-guidance p { margin: 0; }
.print-guidance ul { margin: 4px 0 0; padding-left: 1.4em; }

#print-root { display: none; }
.print-page {
  position: relative;
  display: grid;
  grid-template-rows: 12mm 1fr 6mm;
  overflow: hidden;
  break-after: page;
  background: #fff;
  color: #231f1c;
  font-family: var(--serif);
}
.print-page.a4-landscape { page: a4-landscape; width: 277mm; height: 190mm; }
.print-page.a4-portrait { page: a4-portrait; width: 190mm; height: 277mm; }
.print-page.a3-landscape { page: a3-landscape; width: 400mm; height: 277mm; }
.print-page.a3-portrait { page: a3-portrait; width: 277mm; height: 400mm; }
.print-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 5mm;
  border-bottom: 0.2mm solid #b8afa3;
  font-size: 9pt;
}
.print-header h2 { overflow: hidden; margin: 0; font: 600 14pt/1.2 var(--serif); text-overflow: ellipsis; white-space: nowrap; }
.print-chart { position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; background: #faf8f2; }
.print-chart > svg:first-child { display: block; }
.print-minimap {
  position: absolute;
  z-index: 1;
  top: 2mm;
  right: 2mm;
  border: 0.2mm solid #8b8176;
  background: #fffdf8;
}
.print-footer { display: flex; align-items: end; justify-content: center; font-size: 7pt; color: #514840; }

.colophon {
  padding: 12px 20px 20px;
  font-size: 14px;
  color: var(--ink-soft);
  border-top: 1px solid var(--rule);
}
.colophon p { margin: 2px 0; }

.is-dragging main { outline: 3px dashed var(--indigo); outline-offset: -12px; }

@media (min-width: 900px) {
  .has-panel .viewport-frame { min-height: 55vh; }
}

@media (max-width: 899px) {
  .person-panel {
    position: fixed;
    z-index: 20;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-height: 72dvh;
    border: 1px solid var(--rule);
    border-bottom: 0;
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -10px 30px #0003;
  }
  .has-panel .viewport-frame { min-height: 45vh; }
}

/* スマートフォンでは、縦系図を早く見せるために上部を詰める */
@media (max-width: 600px) {
  body { font-size: 17px; }
  .masthead { padding: 8px 12px; gap: 6px 12px; }
  .brand { font-size: 22px; }
  .toolbar { flex: 1 1 100%; gap: 6px; }
  .toolbar button { flex: 1 1 auto; padding: 0 10px; font-size: 15px; white-space: nowrap; }
  .wide-only { display: none; }
  .status { padding: 6px 12px; font-size: 14px; line-height: 1.5; }
  .status-note { flex-basis: 100%; font-size: 13px; }
  .notice { margin: 8px 12px 0; }
  .chart { padding: 8px 12px 0; }
  .chart-head h2 { font-size: 18px; }
  .chart-options { flex-basis: 100%; }
  .chart-options label { flex: 1 1 150px; font-size: 15px; }
  .chart-options select { min-width: 0; flex: 1; padding-inline: 8px; }
  .tabs { margin-top: 6px; }
  .welcome { margin: 28px auto; }
  .welcome h2 { font-size: 24px; }
  .viewport-frame { min-height: 62vh; margin-top: 8px; }
  .has-panel .viewport-frame { min-height: 38vh; }
  .person-panel { padding: 14px 14px calc(16px + env(safe-area-inset-bottom)); }
  .panel-head h2, .app-dialog h2 { font-size: 21px; }
  .app-dialog { padding: 14px; }
  .print-settings { grid-template-columns: 1fr; }
}

@media (max-width: 375px) {
  .toolbar button { padding-inline: 8px; font-size: 14px; }
  .chart-options label { flex: 1 1 100%; min-width: 0; }
  .field-row { grid-template-columns: 1fr; }
  .panel-actions { grid-template-columns: 1fr; }
  .panel-actions .danger-link { grid-column: auto; }
}

@media print {
  html, body { margin: 0; padding: 0; background: #fff; }
  body { display: block; min-height: 0; overflow: visible; }
  body > :not(#print-root) { display: none !important; }
  #print-root { display: block; }
  .chart-canvas g.is-selected rect { stroke: #292522; stroke-width: 1.4px; filter: none; }
  .print-page {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .print-page:last-child { break-after: auto; }
}