:root {
  --ink:        #14181f;
  --ink-soft:   #3b4250;
  --muted:      #6b7280;
  --line:       #e4e7ec;
  --bg:         #f7f8fa;
  --card:       #ffffff;
  --brand:      #1d3a8a;   /* deep, sober blue */
  --ok:         #1a7f44;
  --ok-bg:      #e9f6ee;
  --warn:       #b3650a;
  --warn-bg:    #fbf1e2;
  --fail:       #b42318;
  --fail-bg:    #fdeceb;
  --neutral-bg: #eef0f3;
  --radius:     12px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --serif: "Iowan Old Style", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* ---- header ---- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; padding-bottom: 16px; gap: 12px;
}
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-mark {
  font-weight: 800; letter-spacing: 0.14em; font-size: 18px; color: var(--ink);
}
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.02em; }
.privacy-pill {
  font-size: 12px; color: var(--ok); background: var(--ok-bg);
  border: 1px solid #cfe9d8; border-radius: 999px; padding: 5px 12px; white-space: nowrap;
}

/* ---- intro ---- */
.intro { padding-top: 44px; }
.intro h1 { font-family: var(--serif); font-size: 34px; margin: 0 0 10px; letter-spacing: -0.01em; }
.lede { font-size: 17px; color: var(--ink-soft); margin: 0 0 8px; max-width: 60ch; }

/* ---- dropzone ---- */
.dropzone {
  margin: 28px 0 0; background: var(--card);
  border: 2px dashed #c9cfd9; border-radius: var(--radius);
  transition: border-color .15s ease, background .15s ease;
  cursor: pointer;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--brand); outline: none; }
.dropzone.drag { border-color: var(--brand); background: #f0f4ff; }
.dz-inner { padding: 40px 24px; text-align: center; }
.dz-icon { font-size: 34px; color: var(--brand); line-height: 1; }
.dz-title { font-size: 18px; font-weight: 600; margin: 12px 0 0; }
.dz-or { color: var(--muted); margin: 8px 0; font-size: 14px; }
.dz-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.dz-hint { color: var(--muted); font-size: 13px; margin: 16px 0 0; }
.dz-sample { font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.linklike { background: none; border: none; padding: 0; font: inherit; color: var(--brand); cursor: pointer; font-weight: 600; }
.linklike:hover { text-decoration: underline; }
.dz-hint code, .lookup code, .proof code { font-family: var(--mono); font-size: .92em; background: var(--neutral-bg); padding: 1px 5px; border-radius: 5px; }

/* ---- buttons ---- */
.btn {
  font: inherit; font-weight: 600; font-size: 14px;
  background: var(--brand); color: #fff; border: 1px solid var(--brand);
  padding: 9px 16px; border-radius: 8px; cursor: pointer;
  transition: filter .12s ease;
}
.btn:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--brand); }
.btn-ghost:hover { background: #eef2fd; filter: none; }

/* ---- paste panel ---- */
.paste-panel { margin-top: 20px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.paste-panel label { font-weight: 600; font-size: 14px; display: block; margin-bottom: 8px; }
#json-input { width: 100%; font-family: var(--mono); font-size: 12.5px; border: 1px solid var(--line); border-radius: 8px; padding: 12px; resize: vertical; }
.paste-actions { display: flex; gap: 10px; margin-top: 12px; }

/* ---- status ---- */
.status { margin: 20px 0 0; color: var(--muted); font-size: 14px; }

/* ---- result ---- */
.result { margin-top: 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.verdict { display: flex; align-items: center; gap: 16px; padding: 22px 24px; }
.verdict .badge { font-weight: 800; font-size: 15px; letter-spacing: .08em; padding: 8px 14px; border-radius: 8px; white-space: nowrap; }
.verdict .v-text { font-size: 15px; }
.verdict.ok    { background: var(--ok-bg); }
.verdict.ok .badge   { background: var(--ok); color: #fff; }
.verdict.fail  { background: var(--fail-bg); }
.verdict.fail .badge { background: var(--fail); color: #fff; }

.checks { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 24px 18px; }
.check { font-size: 13px; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--line); display: inline-flex; align-items: center; gap: 6px; }
.check.pass { background: var(--ok-bg); border-color: #cfe9d8; color: var(--ok); }
.check.failx { background: var(--fail-bg); border-color: #f3c9c5; color: var(--fail); }
.check.warn { background: var(--warn-bg); border-color: #f0dcc0; color: var(--warn); cursor: help; }
.check.skip { background: var(--neutral-bg); color: var(--ink-soft); }

.identity { margin: 2px 24px 6px; padding: 14px 16px; border-radius: 10px; border: 1px solid var(--line); }
.identity.id-ok { background: var(--ok-bg); border-color: #cfe9d8; }
.identity.id-warn { background: var(--warn-bg); border-color: #f0dcc0; }
.identity.id-none { background: var(--neutral-bg); }
.id-line { font-size: 16px; }
.id-line strong { font-weight: 700; }
.id-tick { font-weight: 800; margin-right: 4px; }
.id-ok .id-tick { color: var(--ok); }
.id-warn .id-tick { color: var(--warn); }
.id-sub { font-size: 14px; color: var(--ink-soft); margin-top: 3px; }
.id-meta { font-size: 12px; color: var(--muted); margin-top: 6px; }

.section-block { border-top: 1px solid var(--line); padding: 18px 24px; }
.section-block h3 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }

.kv { display: grid; grid-template-columns: 150px 1fr; gap: 6px 14px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-family: var(--mono); font-size: 12.5px; word-break: break-all; }

.cites { display: flex; flex-direction: column; gap: 8px; }
.cite-row { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.cite-status { font-size: 11px; font-weight: 700; letter-spacing: .04em; padding: 3px 8px; border-radius: 6px; text-transform: uppercase; white-space: nowrap; }
.s-verified         { background: var(--ok-bg);   color: var(--ok); }
.s-parties_mismatch { background: var(--warn-bg); color: var(--warn); }
.s-not_found        { background: var(--fail-bg); color: var(--fail); }
.s-unverifiable     { background: var(--neutral-bg); color: var(--ink-soft); }
.cite-name { flex: 1; }
.cite-name a { color: var(--brand); text-decoration: none; }
.cite-name a:hover { text-decoration: underline; }

.timeline { font-family: var(--mono); font-size: 12.5px; color: var(--ink-soft); display: flex; flex-direction: column; gap: 4px; }
.timeline .t-time { color: var(--muted); }

.tools { display: flex; flex-wrap: wrap; gap: 8px; }
.tool-chip { font-size: 13px; background: var(--neutral-bg); border-radius: 8px; padding: 6px 12px; }
.tool-chip b { font-weight: 600; }

/* ---- lookup ---- */
.lookup { margin-top: 40px; border-top: 1px solid var(--line); padding-top: 28px; }
.lookup h2, .explainer h2 { font-family: var(--serif); font-size: 22px; margin: 0 0 8px; }
.lookup p { color: var(--ink-soft); font-size: 15px; max-width: 64ch; }
.fp-form { display: flex; gap: 10px; margin-top: 12px; }
.fp-form input { font-family: var(--mono); font-size: 15px; letter-spacing: .08em; text-transform: uppercase; border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; width: 190px; }
.fp-msg { margin-top: 10px; font-size: 14px; border-radius: 8px; padding: 10px 12px; border: 1px solid transparent; }
.fp-msg.fp-warn { color: var(--warn); background: var(--warn-bg); border-color: #f0dcc0; }
.fp-msg.fp-ok { color: var(--ink-soft); background: var(--ok-bg); border-color: #cfe9d8; }
.fp-msg code { font-family: var(--mono); font-size: .9em; background: #ffffff80; padding: 1px 4px; border-radius: 4px; }

/* ---- explainer ---- */
.explainer { margin-top: 44px; }
.proof-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 14px; }
.proof { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--card); }
.proof h3 { margin: 0 0 10px; font-size: 15px; }
.proof-yes h3 { color: var(--ok); }
.proof ul { margin: 0; padding-left: 18px; color: var(--ink-soft); font-size: 14px; }
.proof li { margin-bottom: 7px; }
.proof-note { font-size: 12.5px; color: var(--muted); margin: 10px 0 0; }

/* ---- footer ---- */
.site-footer { margin-top: 56px; border-top: 1px solid var(--line); background: var(--card); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 12px; padding: 18px 20px; font-size: 13px; flex-wrap: wrap; }
.site-footer .muted, .muted { color: var(--muted); }

@media (max-width: 560px) {
  .proof-grid { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 110px 1fr; }
  .intro h1 { font-size: 28px; }
}