:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e2e5ea;
  --text: #1a1d23;
  --muted: #6b7280;
  --accent: #2f6fed;
  --accent-soft: #e6eefd;
  --ok: #1a8f5a;
  --ok-soft: #e3f5ec;
  --warn: #b7791f;
  --warn-soft: #fdf3e1;
  --bad: #d0393e;
  --bad-soft: #fde8e8;
  --info: #6b4fd8;
  --info-soft: #efeafd;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --surface: #1a1d23;
    --surface-2: #22262e;
    --border: #2e333c;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --accent: #5b8ff5;
    --accent-soft: #1f2b45;
    --ok: #3cc488;
    --ok-soft: #173327;
    --warn: #e0a846;
    --warn-soft: #362a14;
    --bad: #f26b6f;
    --bad-soft: #3a1c1e;
    --info: #a28cf5;
    --info-soft: #2a2442;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; font-size: .9em; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.spacer { flex: 1; }
.row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

/* top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.brand-mark {
  display: grid; place-items: center; width: 28px; height: 28px;
  border-radius: 8px; background: var(--accent); color: #fff; font-size: 15px;
}
.company { color: var(--muted); font-weight: 500; }
.company:not(:empty)::before { content: "· "; }

.tabs { display: flex; gap: 4px; flex: 1; }
.tab {
  border: 0; background: none; color: var(--muted);
  padding: 8px 14px; border-radius: 8px; font: inherit; font-weight: 500; cursor: pointer;
}
.tab:hover { background: var(--surface-2); color: var(--text); }
.tab.active { background: var(--accent-soft); color: var(--accent); }
.tab-settings { margin-left: auto; }

main { max-width: 1200px; margin: 0 auto; padding: 24px; }
.panel.narrow { max-width: 640px; }

/* buttons & inputs */
.btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 8px 16px; border-radius: 8px; font: inherit; font-weight: 500; cursor: pointer;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--bad); }
.btn:disabled { opacity: .6; cursor: default; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 8px; padding: 8px 12px; font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
input[type="range"] { padding: 0; accent-color: var(--accent); }
textarea { resize: vertical; }

.form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.field label, .label { font-weight: 500; font-size: 14px; }
.field-row { display: flex; gap: 16px; flex-wrap: wrap; }
.hint { margin: 0; font-size: 13px; color: var(--muted); }

/* facts */
.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar input[type="search"] { max-width: 320px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.chip {
  border: 1px solid var(--border); background: var(--surface); color: var(--muted);
  padding: 5px 12px; border-radius: 999px; font: inherit; font-size: 13px; cursor: pointer;
}
.chip.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.count { opacity: .7; }

.facts-list { display: flex; flex-direction: column; gap: 8px; }
.fact {
  display: grid; grid-template-columns: 44px minmax(160px, 260px) minmax(0, 1fr) auto;
  gap: 16px; align-items: start;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; box-shadow: var(--shadow); cursor: pointer;
}
.fact:hover { border-color: var(--accent); }
.fact-n { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 13px; padding-top: 2px; }
.fact-entity { font-weight: 600; }
.fact-pages { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 6px; }
.page-tag { font-size: 11px; padding: 1px 7px; border-radius: 4px; background: var(--surface-2); color: var(--muted); }
.fact-value { white-space: pre-wrap; word-break: break-word; }
.fact-comment { margin-top: 6px; font-size: 13px; color: var(--warn); }
.fact-comment::before { content: "⚠ "; }

.fact > .badge { justify-self: end; }
.badge { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.badge.s-fact { background: var(--ok-soft); color: var(--ok); }
.badge.s-forbidden { background: var(--bad-soft); color: var(--bad); }
.badge.s-clarify { background: var(--warn-soft); color: var(--warn); }

mark { background: var(--warn-soft); color: inherit; border-radius: 2px; }

/* dialog */
dialog {
  width: min(680px, calc(100vw - 32px)); max-height: calc(100vh - 32px);
  border: 1px solid var(--border); border-radius: 14px; padding: 24px;
  background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgba(10, 12, 16, .45); }
dialog h2 { margin: 0; font-size: 18px; }
.dialog-actions { margin-top: 4px; }
.sources summary { cursor: pointer; font-weight: 500; font-size: 14px; color: var(--muted); }
.sources dl { margin: 10px 0 0; display: grid; grid-template-columns: 130px 1fr; gap: 8px 12px; font-size: 13px; }
.sources dt { color: var(--muted); }
.sources dd { margin: 0; white-space: pre-wrap; }

/* check */
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.check-input { display: flex; flex-direction: column; gap: 10px; position: sticky; top: 80px; }
.check-input textarea { min-height: 420px; }
.check-result { display: flex; flex-direction: column; gap: 12px; }
.empty {
  border: 1px dashed var(--border); border-radius: var(--radius);
  padding: 32px; text-align: center; color: var(--muted);
}

.summary {
  border-radius: var(--radius); padding: 16px 18px; border: 1px solid var(--border); background: var(--surface);
}
.summary.ok { border-color: var(--ok); background: var(--ok-soft); }
.summary.needs_changes { border-color: var(--warn); background: var(--warn-soft); }
.summary h3 { margin: 0 0 6px; font-size: 16px; }
.summary p { margin: 0; }
.summary .meta { margin-top: 8px; font-size: 12px; color: var(--muted); }
.usage {
  display: flex; gap: 8px 20px; flex-wrap: wrap;
  margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border);
  font-size: 13px; font-variant-numeric: tabular-nums;
}

.section-title { margin: 8px 0 0; font-size: 14px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }

.issue {
  background: var(--surface); border: 1px solid var(--border); border-left-width: 4px;
  border-radius: var(--radius); padding: 14px 16px; display: flex; flex-direction: column; gap: 8px;
}
.issue.contradiction { border-left-color: var(--bad); }
.issue.forbidden { border-left-color: var(--bad); }
.issue.clarify { border-left-color: var(--warn); }
.issue.unverified { border-left-color: var(--info); }
.issue-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.type { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; }
.type.contradiction, .type.forbidden { background: var(--bad-soft); color: var(--bad); }
.type.clarify { background: var(--warn-soft); color: var(--warn); }
.type.unverified { background: var(--info-soft); color: var(--info); }
.fact-ref { font-size: 12px; color: var(--muted); }
.quote { margin: 0; padding: 6px 10px; border-left: 3px solid var(--border); background: var(--surface-2); border-radius: 4px; font-style: italic; }
.issue p { margin: 0; }
.suggestion { display: flex; gap: 8px; align-items: flex-start; }
.suggestion-text { flex: 1; padding: 6px 10px; background: var(--ok-soft); border-radius: 6px; }
.copy { border: 0; background: none; color: var(--accent); cursor: pointer; font: inherit; font-size: 13px; padding: 6px 0; }

.confirmed { display: flex; flex-direction: column; gap: 6px; }
.confirmed-item { font-size: 14px; padding: 8px 12px; border-radius: 8px; background: var(--ok-soft); }
.confirmed-item::before { content: "✓ "; color: var(--ok); font-weight: 700; }

.spinner {
  width: 18px; height: 18px; border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .8s linear infinite; display: inline-block; vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error { border: 1px solid var(--bad); background: var(--bad-soft); color: var(--bad); padding: 14px 16px; border-radius: var(--radius); }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 18px; border-radius: 8px; font-size: 14px;
  box-shadow: 0 6px 20px rgba(0,0,0,.2);
}

.version { margin-top: 32px; }

/* account & login */
.account {
  margin-top: 32px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
}
.account h2 { margin: 0 0 12px; font-size: 16px; }
.change-password { margin-top: 12px; }
.change-password summary { cursor: pointer; color: var(--accent); font-size: 14px; }
.change-password form { margin-top: 12px; }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-box {
  width: min(360px, 100%); background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px 24px; box-shadow: var(--shadow);
}
.login-brand { margin-bottom: 20px; font-size: 17px; }

/* spending */
.spend {
  margin-top: 32px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
}
.spend h2 { margin: 0 0 12px; font-size: 16px; }
.spend-table { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.spend-table th { text-align: left; font-weight: 500; color: var(--muted); font-size: 13px; padding: 0 8px 8px 0; }
.spend-table td { padding: 8px 8px 8px 0; border-top: 1px solid var(--border); }
.spend-table th:not(:first-child), .spend-table td:not(:first-child) { text-align: right; padding-right: 0; padding-left: 8px; }
.spend-table tfoot td { font-weight: 700; border-top: 2px solid var(--border); }
.spend .hint { margin-top: 10px; }
.tokens-inline { display: none; }
@media (max-width: 480px) {
  .spend { padding: 14px 12px; }
  .spend-table .c-tokens { display: none; }
  .tokens-inline { display: block; font-size: 12px; font-weight: 400; color: var(--muted); }
  .spend-table th:not(:first-child), .spend-table td:not(:first-child) { padding-left: 14px; white-space: nowrap; }
}

/* monitor */
#monitor-warning { margin-bottom: 16px; }
.url-form {
  display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px;
}
.monitor-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.url-list { display: flex; flex-direction: column; gap: 8px; }
.u-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 8px;
}
.u-head { display: flex; gap: 12px; align-items: flex-start; }
.u-main { flex: 1; min-width: 0; }
.u-url { font-weight: 600; color: var(--text); text-decoration: none; word-break: break-all; }
.u-url:hover { color: var(--accent); text-decoration: underline; }
.u-meta { display: flex; gap: 4px 12px; flex-wrap: wrap; align-items: center; margin-top: 4px; font-size: 13px; color: var(--muted); }
.u-actions { display: flex; gap: 4px; align-items: center; }
.u-state { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; background: var(--surface-2); }
.u-state.ok { background: var(--ok-soft); color: var(--ok); }
.u-state.warn { background: var(--warn-soft); color: var(--warn); }
.u-state.error { background: var(--bad-soft); color: var(--bad); }
.u-state.busy { background: var(--accent-soft); color: var(--accent); }
.u-summary { font-size: 14px; }
.u-error { font-size: 13px; color: var(--bad); }
.u-links { display: flex; gap: 16px; flex-wrap: wrap; }
.u-issues { display: flex; flex-direction: column; gap: 8px; }
.btn.small { padding: 4px 12px; font-size: 13px; }
.link { border: 0; background: none; color: var(--accent); cursor: pointer; font: inherit; font-size: 13px; padding: 0; }
.link:hover { text-decoration: underline; }
.spinner.small { width: 11px; height: 11px; border-width: 2px; }
.h-delete:disabled { opacity: .3; cursor: default; background: none; color: var(--muted); }
.h-url { color: var(--accent); }

/* history */
.history-head { margin-bottom: 12px; }
.history-head p { margin: 0; }
.history-list { display: flex; flex-direction: column; gap: 8px; }
.h-item {
  display: grid; grid-template-columns: 130px minmax(0, 1fr) auto auto;
  gap: 16px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 16px; box-shadow: var(--shadow); cursor: pointer;
}
.h-item:hover { border-color: var(--accent); }
.h-date { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.h-preview { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.h-meta { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.h-verdict { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.h-verdict.ok { background: var(--ok-soft); color: var(--ok); }
.h-verdict.needs_changes { background: var(--warn-soft); color: var(--warn); }
.h-delete { border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 18px; line-height: 1; padding: 2px 6px; border-radius: 6px; }
.h-delete:hover { color: var(--bad); background: var(--bad-soft); }

.pager { display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }
.pager button {
  min-width: 36px; height: 36px; padding: 0 10px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 8px; font: inherit; cursor: pointer; font-variant-numeric: tabular-nums;
}
.pager button:hover:not(:disabled) { background: var(--surface-2); }
.pager button.current { background: var(--accent); border-color: var(--accent); color: #fff; }
.pager button:disabled { opacity: .45; cursor: default; }
.pager .gap { align-self: center; color: var(--muted); padding: 0 4px; }

.history-banner {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--muted);
}
.history-banner button { border: 0; background: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

@media (max-width: 860px) {
  .topbar { padding: 12px 16px; gap: 10px; }
  .tabs { overflow-x: auto; width: 100%; }
  .tab-settings { margin-left: 0; }
  main { padding: 16px; }
  .check-grid { grid-template-columns: 1fr; }
  .check-input { position: static; }
  .check-input textarea { min-height: 240px; }
  .fact { grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
  .fact-n { display: none; }
  .fact-body { grid-column: 1 / -1; grid-row: 2; }
  .u-head { flex-wrap: wrap; }
  .u-main { flex-basis: 100%; }
  .h-item { grid-template-columns: minmax(0, 1fr) auto; gap: 4px 12px; }
  .h-date { grid-column: 1; grid-row: 1; }
  .h-delete { grid-column: 2; grid-row: 1; }
  .h-preview {
    grid-column: 1 / -1; grid-row: 2; white-space: normal;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  }
  .h-meta { grid-column: 1 / -1; grid-row: 3; text-align: left; }
  .h-meta br { display: none; }
  .h-verdict { margin-right: 8px; }
}