:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --line: #e3e6ea;
  --line-soft: #eef0f3;

  --text: #16191d;
  --text-2: #5b6472;
  --text-3: #8b95a3;

  --accent: #2563eb;
  --accent-soft: #eff4ff;

  --high: #d92d20;
  --high-soft: #fef3f2;
  --med: #b54708;
  --med-soft: #fffaeb;
  --low: #475467;
  --low-soft: #f2f4f7;
  --good: #067647;
  --good-soft: #ecfdf3;

  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, "Segoe UI", Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a.link { color: var(--accent); }
a.link:hover { text-decoration: underline; }

/* --- chrome ------------------------------------------------------------ */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 60px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}

.wordmark { font-weight: 650; font-size: 15px; letter-spacing: -0.01em; }
.topbar nav { display: flex; gap: 8px; }
.topbar nav a {
  color: var(--text-2);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 7px;
}
.topbar nav a:hover { color: var(--text); background: var(--low-soft); }

main { max-width: 1000px; margin: 0 auto; padding: 32px 32px 96px; }

.page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

h1 { font-size: 26px; font-weight: 650; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: 17px; font-weight: 650; margin: 0; letter-spacing: -0.01em; }
h3 { font-size: 15px; font-weight: 650; margin: 0 0 4px; letter-spacing: -0.01em; }

.section { margin-top: 32px; }
.section-head { margin-bottom: 14px; }
.section-head h2 { margin-bottom: 3px; }
.section-head p { margin: 0; color: var(--text-2); font-size: 13.5px; }

.head-actions { display: flex; gap: 8px; align-items: center; }
.head-actions form { margin: 0; }

.domain { color: var(--text-2); font-size: 13.5px; font-family: var(--mono); }
.muted { color: var(--text-2); font-size: 14px; }
.mono { font-family: var(--mono); font-size: 13px; }
.empty { color: var(--text-2); }

code {
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--low-soft);
  border-radius: 4px;
  padding: 2px 6px;
}

/* --- buttons ----------------------------------------------------------- */

.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.btn:hover { background: var(--low-soft); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #1d4ed8; }
.btn.danger { color: var(--high); }
.btn.danger:hover { background: var(--high-soft); border-color: var(--high); }

/* --- cards ------------------------------------------------------------- */

.cards { display: grid; gap: 14px; }

.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
}
a.card:hover { border-color: #cfd5dd; }

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

/* --- score ------------------------------------------------------------- */

.score-block { display: flex; align-items: center; gap: 13px; }
.score-num {
  font-size: 30px;
  font-weight: 680;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.score-num .unit { font-size: 15px; color: var(--text-3); font-weight: 500; }
.score-label { font-size: 11.5px; color: var(--text-3); text-transform: uppercase;
               letter-spacing: 0.06em; margin-top: 3px; }
.good  .score-num { color: var(--good); }
.warn  .score-num { color: var(--med); }
.bad   .score-num { color: var(--high); }

.meter { height: 6px; border-radius: 3px; background: var(--line-soft); overflow: hidden; margin-top: 14px; }
.meter span { display: block; height: 100%; border-radius: 3px; }
.good .meter span { background: var(--good); }
.warn .meter span { background: var(--med); }
.bad  .meter span { background: var(--high); }

/* --- metrics ----------------------------------------------------------- */

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 0;
}
.metrics > div { background: var(--card); padding: 16px 18px; }
.metrics dt { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.06em;
              color: var(--text-3); margin-bottom: 5px; }
.metrics dd { margin: 0; font-size: 25px; font-weight: 650; letter-spacing: -0.02em;
              font-variant-numeric: tabular-nums; }
.metrics .sub { color: var(--text-3); font-size: 15px; font-weight: 500; }

.range { color: var(--text-3); font-size: 12.5px; margin-top: 10px; }
.inline-metrics { display: flex; gap: 22px; margin-top: 14px; flex-wrap: wrap; }
.inline-metrics span { font-size: 13.5px; color: var(--text-2); }
.inline-metrics b { color: var(--text); font-weight: 620; font-variant-numeric: tabular-nums; }

/* --- badges ------------------------------------------------------------ */

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 5px;
  white-space: nowrap;
}
.badge.high { color: var(--high); background: var(--high-soft); }
.badge.medium { color: var(--med); background: var(--med-soft); }
.badge.low { color: var(--low); background: var(--low-soft); }
.badge.good { color: var(--good); background: var(--good-soft); }

/* --- action plan ------------------------------------------------------- */

.actions { display: grid; gap: 12px; }

.action {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.action.high { border-left-color: var(--high); }
.action.medium { border-left-color: var(--med); }
.action.low { border-left-color: var(--low); }

.action-head { display: flex; align-items: center; gap: 10px; margin-bottom: 7px; }
.action-head h3 { margin: 0; }
.action .detail { font-family: var(--mono); font-size: 12.5px; color: var(--text-3); margin-left: auto; }
.action .why { color: var(--text-2); font-size: 14px; margin: 0 0 10px; }
.action .fix {
  font-size: 14px;
  margin: 0;
  padding: 10px 13px;
  background: var(--accent-soft);
  border-radius: 7px;
  color: #1e40af;
}
.action .fix b { font-weight: 650; }

.all-clear {
  background: var(--good-soft);
  border: 1px solid #abefc6;
  border-radius: var(--radius);
  padding: 16px 20px;
  color: var(--good);
  font-size: 14px;
}

/* --- passing list ------------------------------------------------------ */

details.passing { margin-top: 14px; }
details.passing summary {
  cursor: pointer;
  font-size: 13.5px;
  color: var(--text-2);
  padding: 8px 0;
  list-style: none;
}
details.passing summary::-webkit-details-marker { display: none; }
details.passing summary::before { content: "+ "; font-family: var(--mono); }
details.passing[open] summary::before { content: "- "; }
details.passing summary:hover { color: var(--text); }

.pass-list { list-style: none; margin: 6px 0 0; padding: 0;
             background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.pass-list li {
  display: flex; align-items: baseline; gap: 10px;
  padding: 10px 18px; border-bottom: 1px solid var(--line-soft); font-size: 14px;
}
.pass-list li:last-child { border-bottom: none; }
.pass-list .tick { color: var(--good); font-weight: 700; }
.pass-list .detail { margin-left: auto; font-family: var(--mono); font-size: 12.5px; color: var(--text-3); }

/* --- tables ------------------------------------------------------------ */

.table-wrap { overflow-x: auto; background: var(--card);
              border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  text-align: left; font-weight: 550; font-size: 11.5px; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--text-3);
  padding: 11px 16px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
tbody td { padding: 11px 16px; border-bottom: 1px solid var(--line-soft); }
tbody tr:last-child td { border-bottom: none; }
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }

/* --- key/value --------------------------------------------------------- */

.kv { display: grid; grid-template-columns: 128px 1fr; gap: 10px 20px; margin: 0;
      background: var(--card); border: 1px solid var(--line);
      border-radius: var(--radius); padding: 18px 20px; }
.kv dt { color: var(--text-3); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.kv dd { margin: 0; word-break: break-word; font-size: 14px; }

/* --- link preview ------------------------------------------------------ */

.preview-wrap { display: grid; grid-template-columns: 460px 1fr; gap: 20px; align-items: start; }

/* Mirrors the summary_large_image layout X, LinkedIn, Slack and WhatsApp all
   converge on: image on top at ~1.91:1, then domain, title, description. */
.link-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--card);
}
.link-card-img { background: var(--low-soft); aspect-ratio: 1.91 / 1; }
.link-card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.link-card-body { padding: 11px 14px; border-top: 1px solid var(--line); }
.link-card-domain {
  font-size: 12px; color: var(--text-3); text-transform: lowercase; margin-bottom: 3px;
}
.link-card-title {
  font-size: 15px; font-weight: 600; line-height: 1.3; margin-bottom: 3px;
  overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.link-card-desc {
  font-size: 13.5px; color: var(--text-2); line-height: 1.4;
  overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.preview-facts { grid-template-columns: 96px 1fr; }

/* --- form -------------------------------------------------------------- */

.form { display: grid; gap: 20px; max-width: 470px; background: var(--card);
        border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.form label { display: grid; gap: 6px; }
.form label > span { font-size: 13.5px; font-weight: 600; }
.form input, .form select {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font: inherit; font-size: 14px; padding: 9px 12px;
}
.form input:focus, .form select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.form small { color: var(--text-3); font-size: 12.5px; }
.form .btn { justify-self: start; padding: 9px 20px; }

.alert {
  color: var(--high); background: var(--high-soft); font-size: 14px;
  border: 1px solid #fecdca; border-radius: 8px; padding: 10px 14px; margin: 0 0 16px;
}
.notice {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 20px; color: var(--text-2); font-size: 14px;
}

@media (max-width: 760px) {
  main { padding: 24px 18px 72px; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .kv { grid-template-columns: 1fr; gap: 2px; }
  .kv dd { margin-bottom: 10px; }
  .action .detail { margin-left: 0; width: 100%; }
  .action-head { flex-wrap: wrap; }
  .preview-wrap { grid-template-columns: 1fr; }
}