:root { color-scheme: light; --bg:#f3f5f8; --surface:#fff; --text:#202b3c; --muted:#526176; --line:#d7dee8; --accent:#245fb5; --soft:#e9f0fb; --ok:#18633f; --warn:#865016; --shadow:0 8px 32px #182b4910; }
@media (prefers-color-scheme:dark) { :root:not([data-theme=light]) { color-scheme:dark; --bg:#141b25; --surface:#1c2633; --text:#edf2fa; --muted:#b2bfd0; --line:#3c4b60; --accent:#9bbfff; --soft:#293b55; --ok:#8adbb0; --warn:#f3c082; --shadow:0 8px 32px #0002; } }
:root[data-theme=dark] { color-scheme:dark; --bg:#141b25; --surface:#1c2633; --text:#edf2fa; --muted:#b2bfd0; --line:#3c4b60; --accent:#9bbfff; --soft:#293b55; --ok:#8adbb0; --warn:#f3c082; --shadow:0 8px 32px #0002; }
* { box-sizing:border-box; } body { margin:0; background:var(--bg); color:var(--text); font:16px/1.75 "Segoe UI","Yu Gothic UI","Meiryo",sans-serif; }
a { color:var(--accent); text-underline-offset:4px; } button,input,textarea,select { font:inherit; } button,select { cursor:pointer; } button { color:var(--text); } button:disabled { cursor:wait; opacity:.65; }
:focus-visible { outline:3px solid var(--accent); outline-offset:3px; } .shell { max-width:1040px; margin:auto; padding:0 28px; } .topbar { display:flex; justify-content:space-between; align-items:center; min-height:88px; gap:16px; border-bottom:1px solid var(--line); }
.brand { display:flex; align-items:center; gap:12px; color:var(--text); text-decoration:none; font-weight:650; } .brand-mark { display:grid; place-items:center; width:36px; height:36px; border-radius:9px; background:var(--soft); color:var(--accent); }
.theme-control { display:flex; align-items:center; gap:8px; font-size:.85rem; color:var(--muted); } .theme-control select { padding:5px 8px; width:auto; } .intro { padding:48px 0 30px; } .eyebrow { color:var(--accent); font-size:.9rem; font-weight:650; letter-spacing:.08em; }
h1 { font-size:clamp(1.8rem,5vw,2.8rem); line-height:1.25; letter-spacing:-.025em; margin:14px 0 20px; } h1 span { font-weight:350; } h2 { font-size:1.2rem; margin:0 0 20px; } .lead { color:var(--muted); font-size:1.05rem; } .privacy { color:var(--muted); font-size:.85rem; } .privacy span { color:var(--ok); padding-right:6px; }
.panel { border:1px solid var(--line); background:var(--surface); border-radius:16px; padding:28px; box-shadow:var(--shadow); } label { display:block; font-size:.9rem; font-weight:600; margin-bottom:8px; } textarea,select { border:1px solid var(--line); border-radius:8px; padding:12px; background:var(--surface); color:var(--text); width:100%; } textarea { display:block; resize:vertical; min-height:124px; font-size:1.35rem; } .help { color:var(--muted); font-size:.83rem; margin:8px 0; }
.examples { display:flex; flex-wrap:wrap; gap:8px; align-items:center; margin:18px 0 24px; font-size:.85rem; color:var(--muted); } .chip { border:1px solid var(--line); border-radius:20px; padding:4px 12px; background:var(--surface); font-size:.85rem; } .chip:hover,.candidate:hover { background:var(--soft); border-color:var(--accent); } .action-row { display:flex; align-items:end; gap:20px; } .target-control { flex:1; } .primary { border:0; border-radius:8px; background:#245fb5; color:#fff; padding:13px 24px; font-weight:650; min-width:160px; } .primary:hover { background:#174b98; } .primary span { margin-left:16px; }
.results { margin:32px 0; } .empty { text-align:center; padding:32px; color:var(--muted); } .empty>span { display:block; font-size:2rem; color:var(--line); } .result-panel { padding:24px; } .badge { display:inline-block; border-radius:6px; padding:3px 10px; font-size:.85rem; font-weight:650; background:var(--bg); } .success { color:var(--ok); } .warning { color:var(--warn); } .original-text { white-space:pre-wrap; overflow-wrap:anywhere; } .table-scroll { overflow-x:auto; margin:20px 0; } table { border-collapse:collapse; width:100%; min-width:560px; text-align:left; } th,td { border-bottom:1px solid var(--line); padding:16px 12px; vertical-align:top; } thead { font-size:.8rem; color:var(--muted); } tbody th { width:120px; } td { font-size:.9rem; } .character { display:block; font-size:1.65rem; font-weight:500; white-space:pre-wrap; } .position { display:block; color:var(--muted); font-size:.7rem; font-weight:400; } .status-dot { display:inline-block; width:7px; height:7px; border-radius:50%; margin-right:8px; } .ok { background:var(--ok); } .outside { background:var(--warn); } .candidates { display:flex; flex-wrap:wrap; gap:8px; } .candidate { display:flex; gap:12px; align-items:center; border:1px solid var(--line); border-radius:8px; padding:5px 12px; background:var(--surface); } .candidate span { font-size:1.35rem; } .candidate small { color:var(--accent); }
.notes { color:var(--muted); font-size:.85rem; padding:4px 4px 24px; } .notes h2 { font-size:1rem; margin-bottom:10px; } footer { border-top:1px solid var(--line); padding:24px 0 36px; font-size:.78rem; color:var(--muted); display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px; } footer nav { display:flex; flex-wrap:wrap; gap:18px; } .error { color:var(--warn); } .loading { margin:15vh auto; max-width:600px; padding:24px; } #blazor-error-ui { display:none; position:fixed; bottom:0; width:100%; padding:16px; background:var(--surface); border-top:2px solid var(--warn); z-index:100; } .dismiss { float:right; } .sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); } .skip-link { position:fixed; top:-100px; left:12px; background:var(--surface); padding:8px; z-index:101; } .skip-link:focus { top:8px; }
@media(max-width:600px) { .shell { padding:0 16px; } .topbar { min-height:72px; } .brand { font-size:.85rem; gap:6px; } .theme-control { font-size:.75rem; gap:4px; } .intro { padding:30px 0 18px; } h1 span { display:block; } .panel { padding:20px 16px; border-radius:12px; } .action-row { flex-direction:column; align-items:stretch; gap:14px; } .lead { font-size:.95rem; } .result-panel { padding:20px 12px; } }
@media(max-width:600px) { table { min-width:0; } thead { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); } tbody tr { display:block; border-bottom:1px solid var(--line); padding:12px 0; } tbody th,tbody td { display:block; width:auto; border:0; padding:5px 4px; } td::before { content:attr(data-label); display:block; color:var(--muted); font-size:.75rem; margin-bottom:3px; } }

fieldset { border:0; padding:0; margin:0; min-width:0; }
fieldset:disabled { opacity:.65; }
.mode-switch { display:flex; gap:4px; background:var(--soft); border:1px solid var(--line); border-radius:10px; padding:4px; width:fit-content; }
.mode-switch button { padding:10px 24px; border:0; border-radius:7px; background:transparent; color:var(--muted); font-weight:600; }
.mode-switch button[aria-pressed="true"] { background:var(--surface); color:var(--accent); box-shadow:var(--shadow); }
.mode-help { margin:10px 0 24px; }
.fallback-option { display:flex; align-items:flex-start; gap:10px; margin:22px 0 8px; }
.fallback-option input { margin:5px 0 0; accent-color:var(--accent); flex-shrink:0; width:18px; height:18px; }
.convert-button { margin-top:20px; }
.comparison { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin:24px 0 16px; }
.comparison>div { min-width:0; }
.comparison textarea { font-size:1rem; min-height:160px; white-space:pre-wrap; }
.copy-output { border:1px solid var(--accent); border-radius:8px; color:var(--accent); background:var(--surface); padding:10px 18px; font-weight:600; }
.copy-output:hover { background:var(--soft); }
.conversion-details { border-top:1px solid var(--line); padding-top:16px; margin-top:20px; }
.conversion-details summary { cursor:pointer; font-weight:600; padding:4px 0; }
.conversion-details .position { overflow-wrap:anywhere; }
[hidden] { display:none !important; }
@media(max-width:600px) {
    .mode-switch { width:100%; }
    .mode-switch button { flex:1; padding:10px 12px; }
    .comparison { grid-template-columns:1fr; gap:16px; }
    .convert-button,.copy-output { width:100%; }
}
.candidate-item { display:flex; flex-direction:column; align-items:flex-start; gap:4px; max-width:100%; }
.candidate-kind { color:var(--muted); font-size:.75rem; }
.result-panel .position { overflow-wrap:anywhere; }
.detail-toggle { border:1px solid var(--line); border-radius:8px; background:var(--surface); padding:6px 10px; text-align:left; }
.detail-toggle:hover,.detail-toggle[aria-expanded="true"] { background:var(--soft); border-color:var(--accent); }
.detail-toggle small { color:var(--accent); font-size:.75rem; }
.character-detail-row>td { padding:20px; background:var(--soft); }
.character-detail-row>td::before { content:none; }
.character-details { min-width:0; overflow-wrap:anywhere; }
.character-details h3 { font-size:1.05rem; margin:0 0 16px; }
.character-details h4 { font-size:.95rem; margin:20px 0 12px; }
.detail-facts { display:grid; grid-template-columns:minmax(140px,auto) minmax(0,1fr); gap:8px 24px; margin:0; }
.detail-facts dt { color:var(--muted); }
.detail-facts dd { margin:0; min-width:0; }
.reading-list { margin:0; padding-left:24px; }
.reading-list li { margin:8px 0; }
.reading-examples { display:block; font-size:.85rem; color:var(--muted); }
.reading-note { white-space:pre-wrap; font-size:.85rem; }
@media(max-width:600px) {
    .character-detail-row { padding:0; }
    .character-detail-row>td { padding:16px 12px; }
    .detail-facts { grid-template-columns:1fr; gap:3px; }
    .detail-facts dd { margin-bottom:9px; }
}

/* Grade-aware manual ruby editor: visual ranges, no numeric position inputs. */
.mode-switch { flex-wrap:wrap; max-width:100%; }
.furigana-preview { font-size:1.35rem; line-height:2.7; padding:18px 0; }
.furigana-preview rt { font-size:.55em; }
.furigana-pending { text-decoration:underline dotted; text-decoration-color:var(--warn); text-underline-offset:5px; }
.furigana-toggle { display:flex; align-items:center; gap:10px; }
.furigana-toggle input { width:18px; height:18px; accent-color:var(--accent); }
.furigana-map { font-size:1.2rem; line-height:2.6; padding:16px; border:1px solid var(--line); border-radius:8px; }
.furigana-range { display:inline; border:1px solid var(--line); border-radius:6px; background:var(--surface); padding:3px 5px; white-space:pre-wrap; overflow-wrap:anywhere; }
.furigana-range.selected { border-color:var(--accent); background:var(--soft); }
.furigana-unlearned { color:var(--warn); text-decoration:underline; text-underline-offset:4px; }
.furigana-join { font-size:.65rem; padding:8px 4px; border:0; background:var(--soft); color:var(--accent); border-radius:4px; }
.furigana-editor { margin-top:16px; padding:16px; background:var(--soft); border-radius:8px; }
.furigana-editor input { width:100%; padding:10px; border:1px solid var(--line); border-radius:8px; color:var(--text); background:var(--surface); }
.furigana-stale { border:2px solid var(--warn); }
@media(max-width:600px) { .mode-switch { width:100%; } .mode-switch button { padding:10px 12px; flex:1; } .furigana-map { padding:10px; } }

.furigana-actions { display:flex; flex-direction:column; gap:8px; }
.furigana-auto { background:var(--soft); border-radius:3px; }
@media(max-width:600px) { .furigana-actions { width:100%; } .furigana-actions .primary { min-width:0; width:100%; } }