:root {
  --bg: #f6f6f3;
  --surface: #ffffff;
  --surface-2: #f1f0ec;
  --text: #1b1b1f;
  --muted: #64646e;
  --faint: #9a9aa3;
  --border: #e3e2dc;
  --accent: #4f46e5;
  --accent-ink: #ffffff;
  --accent-soft: #eceafd;
  --focus: #4f46e5;
  --shadow: 0 1px 2px rgba(20, 20, 30, .06), 0 8px 24px rgba(20, 20, 30, .06);
  --radius: 14px;

  --c-family: #d6336c;
  --c-film: #7c3aed;
  --c-music: #db2777;
  --c-sports: #16a34a;
  --c-politics: #2563eb;
  --c-science: #0d9488;
  --c-business: #b45309;
  --c-arts: #ea580c;
  --c-other: #6b7280;
  --c-awards: #ca8a04;
  --c-influence: #4338ca;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111114;
    --surface: #1a1a1f;
    --surface-2: #232329;
    --text: #ececf1;
    --muted: #a3a3ad;
    --faint: #6e6e78;
    --border: #2e2e36;
    --accent: #8b85ff;
    --accent-ink: #111114;
    --accent-soft: #26244a;
    --focus: #8b85ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
    --c-family: #f06595;
    --c-film: #a78bfa;
    --c-music: #f472b6;
    --c-sports: #4ade80;
    --c-politics: #60a5fa;
    --c-science: #2dd4bf;
    --c-business: #f59e0b;
    --c-arts: #fb923c;
    --c-other: #9ca3af;
    --c-awards: #facc15;
    --c-influence: #818cf8;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* ---------- header ---------- */
.top { max-width: 920px; margin: 0 auto; padding: 28px 20px 8px; }
.brand { display: flex; align-items: center; gap: 14px; }
.mark {
  display: grid; place-items: center; flex: none;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 800; font-size: 19px; letter-spacing: -.5px;
}
h1 { margin: 0; font-size: 24px; letter-spacing: -.4px; line-height: 1.2; }
.stats { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.net { display: flex; align-items: center; gap: 8px; margin: 4px 0 0; color: var(--muted); font-size: 12.5px; }
.net[hidden] { display: none; }
.net.err { color: #c2410c; }
.net .bar { flex: none; width: 90px; height: 5px; border-radius: 3px; background: var(--surface-2); overflow: hidden; }
.net .bar i { display: block; height: 100%; background: var(--accent); transition: width .2s; }

main { max-width: 920px; margin: 0 auto; padding: 12px 20px 40px; }

/* ---------- search panel ---------- */
.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px;
}
.pickers { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: start; }
.picker { position: relative; min-width: 0; }
.picker label { display: block; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 6px 2px; }
.field {
  display: flex; align-items: center; gap: 10px;
  border: 1.5px solid var(--border); border-radius: 12px; background: var(--surface-2);
  padding: 6px 10px; transition: border-color .15s, background .15s;
}
.field:focus-within { border-color: var(--accent); background: var(--surface); }
.field-avatar { display: none; width: 30px; height: 30px; flex: none; }
.picker.picked .field-avatar { display: block; }
.field input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text);
  font-size: 16px; padding: 6px 0;
}
.field input::placeholder { color: var(--faint); }
.chosen-meta { margin: 6px 2px 0; min-height: 1.4em; font-size: 12.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.swap {
  margin-top: 26px; width: 40px; height: 44px; border-radius: 12px; border: 1.5px solid var(--border);
  background: var(--surface); cursor: pointer; font-size: 18px; color: var(--muted);
}
.swap:hover { color: var(--accent); border-color: var(--accent); }

.suggest {
  position: absolute; z-index: 20; left: 0; right: 0; top: 74px; margin: 0; padding: 6px; list-style: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow);
  max-height: 420px; overflow-y: auto;
}
.suggest li {
  display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 9px; cursor: pointer;
}
.suggest li[aria-selected="true"], .suggest li:hover { background: var(--accent-soft); }
.suggest li.empty { color: var(--muted); cursor: default; background: none; }
.suggest .txt { min-width: 0; }
.suggest b { display: block; font-weight: 600; }
.suggest small { display: block; color: var(--muted); font-size: 12.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* avatars */
.av {
  position: relative; flex: none; width: 40px; height: 40px; border-radius: 50%; overflow: hidden;
  display: grid; place-items: center; background: var(--surface-2); color: var(--muted);
  font-weight: 700; font-size: 14px; letter-spacing: .02em;
}
.av img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 20%; }
.av.sm { width: 30px; height: 30px; font-size: 11px; }
.av.lg { width: 56px; height: 56px; font-size: 18px; }
.av.xl { width: 72px; height: 72px; font-size: 22px; }

/* category chips */
.cats { border: 0; margin: 18px 0 0; padding: 0; min-width: 0; }
.cats legend { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 0 0 8px 2px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px;
  border: 1.5px solid var(--border); background: var(--surface); cursor: pointer; font-size: 13.5px; user-select: none;
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cat); opacity: .35; }
.chip[aria-pressed="true"] { border-color: var(--cat); background: color-mix(in srgb, var(--cat) 10%, var(--surface)); }
.chip[aria-pressed="true"] .dot { opacity: 1; }
.chip[aria-pressed="false"] { color: var(--muted); }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 18px; }
.primary, .ghost {
  border-radius: 11px; padding: 10px 18px; font-weight: 600; cursor: pointer; border: 1.5px solid transparent;
}
.primary { background: var(--accent); color: var(--accent-ink); }
.primary:disabled { opacity: .45; cursor: not-allowed; }
.ghost { background: transparent; border-color: var(--border); }
.ghost:hover { border-color: var(--accent); color: var(--accent); }
.avoiding { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.avoiding .tag {
  display: inline-flex; align-items: center; gap: 4px; padding: 3px 4px 3px 10px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
}
.avoiding .tag button { border: 0; background: none; cursor: pointer; color: var(--muted); padding: 0 6px; font-size: 14px; }

/* ---------- results ---------- */
.result { margin-top: 26px; }
.result:empty { display: none; }
.headline { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin: 0 0 4px; }
.headline .num { font-size: 56px; font-weight: 800; letter-spacing: -2px; line-height: 1; color: var(--accent); }
.headline .what { font-size: 20px; font-weight: 650; }
.subline { margin: 4px 0 20px; color: var(--muted); font-size: 13px; }
.notice {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; color: var(--muted);
}
.notice.err { border-color: color-mix(in srgb, #dc2626 45%, var(--border)); color: var(--text); }
.loading { display: flex; align-items: center; gap: 12px; color: var(--muted); }
.loading .msg { flex: 1; min-width: 0; }
.loading .stop { flex: none; font-size: 13.5px; padding: 6px 14px; }
.loading .stop:hover { color: #dc2626; border-color: #dc2626; }
.spinner { flex: none; width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid var(--border); border-top-color: var(--accent); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.chain { list-style: none; margin: 0; padding: 0; position: relative; }
.node {
  position: relative; display: flex; gap: 14px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px;
  box-shadow: var(--shadow);
}
.node .who { min-width: 0; flex: 1; }
.node .name { font-weight: 700; font-size: 17px; text-decoration: none; }
.node .name:hover { text-decoration: underline; }
.node .meta { color: var(--muted); font-size: 13px; margin-top: 1px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.node .btns { display: flex; gap: 6px; flex: none; }
.mini-btn {
  border: 1px solid var(--border); background: var(--surface); border-radius: 8px; padding: 4px 9px; font-size: 12.5px;
  color: var(--muted); cursor: pointer; white-space: nowrap;
}
.mini-btn:hover { color: var(--accent); border-color: var(--accent); }
.edge .src { margin: 4px 0 0; font-size: 12px; color: var(--faint); }
.edge .src a { color: inherit; text-decoration: none; }
.edge .src a:hover { text-decoration: underline; }

.edge { position: relative; margin: 0 0 0 35px; padding: 14px 0 14px 28px; border-left: 2.5px solid var(--cat); }
.edge .pill {
  display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
  color: var(--cat); background: color-mix(in srgb, var(--cat) 12%, transparent); padding: 2px 8px; border-radius: 999px;
}
.edge p { margin: 6px 0 0; }
.edge .sentence strong { font-weight: 650; }
.edge .also { color: var(--muted); font-size: 13px; }

.cat-family { --cat: var(--c-family); } .cat-film { --cat: var(--c-film); } .cat-music { --cat: var(--c-music); }
.cat-sports { --cat: var(--c-sports); } .cat-politics { --cat: var(--c-politics); } .cat-science { --cat: var(--c-science); }
.cat-business { --cat: var(--c-business); } .cat-arts { --cat: var(--c-arts); } .cat-other { --cat: var(--c-other); }
.cat-awards { --cat: var(--c-awards); } .cat-influence { --cat: var(--c-influence); }

.routes { margin-top: 26px; }
.routes h3, .drawer h3 { font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 10px; }
.route {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px; width: 100%; text-align: left;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; margin-bottom: 8px; cursor: pointer;
}
.route:hover, .route[aria-current="true"] { border-color: var(--accent); }
.route .arrow { color: var(--faint); }

/* ---------- drawer ---------- */
.scrim { position: fixed; inset: 0; background: rgba(10, 10, 15, .35); z-index: 40; }
.drawer {
  position: fixed; z-index: 50; top: 0; right: 0; bottom: 0; width: min(460px, 100vw);
  background: var(--surface); border-left: 1px solid var(--border); box-shadow: var(--shadow);
  overflow-y: auto; overscroll-behavior: contain;
}
.drawer-inner { padding: 20px; }
.drawer .close { float: right; border: 0; background: none; font-size: 22px; color: var(--muted); cursor: pointer; line-height: 1; padding: 4px 8px; }
.drawer .head { display: flex; gap: 14px; align-items: center; margin-bottom: 10px; }
.drawer .head h2 { margin: 0; font-size: 20px; line-height: 1.25; }
.drawer .head .meta { color: var(--muted); font-size: 13px; }
.drawer .links { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 18px; }
.drawer .links a { font-size: 13px; color: var(--accent); }
.drawer section { margin: 18px 0; }
.drawer h3 { display: flex; align-items: center; gap: 8px; }
.drawer h3::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--cat); }
.drawer ul { list-style: none; margin: 0; padding: 0; }
.drawer li { padding: 8px 0; border-top: 1px solid var(--border); font-size: 14px; }
.drawer li:first-child { border-top: 0; }
.drawer .ctx-title { font-weight: 600; }
.drawer .ctx-role { color: var(--muted); font-size: 13px; }
.drawer .with { display: flex; flex-wrap: wrap; gap: 4px 10px; margin-top: 4px; font-size: 13px; }
.linkish { border: 0; background: none; padding: 0; color: var(--accent); cursor: pointer; text-align: left; font-size: inherit; }
.linkish:hover { text-decoration: underline; }
.more { color: var(--muted); font-size: 13px; margin-top: 6px; }

.foot { max-width: 920px; margin: 0 auto; padding: 0 20px 36px; color: var(--faint); font-size: 12.5px; }

@media (max-width: 680px) {
  .top { padding-top: 18px; }
  .brand { align-items: flex-start; }
  main { padding: 8px 16px 32px; }
  .panel { padding: 16px; }
  .pickers { grid-template-columns: 1fr; gap: 4px; }
  .swap { margin: 0 auto; width: 44px; height: 36px; transform: rotate(90deg); }
  .suggest { top: 74px; }
  .headline .num { font-size: 44px; }
  .node { flex-wrap: wrap; padding: 12px; }
  .node .btns { width: 100%; padding-left: 54px; }
  .edge { margin-left: 30px; padding-left: 20px; }
  .foot { padding: 0 16px 28px; }
}