:root {
  color-scheme: light dark;
  --ink: #12161c;
  --bg: #ffffff;
  --panel: #f5f7fa;
  --line: #dde2ea;
  --muted: #5b6472;
  --accent: #2f6df6;
  --on-accent: #ffffff;
  --good: #137a4f;
  --warn: #9a6400;
  --bad: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e7ecf3; --bg: #0b0e12; --panel: #141920; --line: #262d38; --muted: #93a0b4;
    --accent: #6ea0ff; --on-accent: #0b0e12; --good: #3fbf86; --warn: #e0a020; --bad: #ef6b63;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { max-width: 960px; width: 100%; margin: 0 auto; padding: 32px 22px 56px; flex: 1; }
h1 { font-size: clamp(28px, 5vw, 42px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 36px 0 10px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.lede { font-size: 18px; max-width: 46em; }
.good { color: var(--good); }
.warn { color: var(--warn); font-weight: 700; }
.bad { color: var(--bad); font-weight: 700; }
[hidden] { display: none !important; }

header.site, footer.site {
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  padding: 14px 22px; border-bottom: 1px solid var(--line);
}
header.site .brand { font-weight: 800; letter-spacing: -0.02em; text-decoration: none; color: var(--ink); font-size: 18px; }
header.site nav { margin-left: auto; display: flex; gap: 16px; align-items: center; }
header.site nav span { display: flex; gap: 16px; align-items: center; }
footer.site { border-top: 1px solid var(--line); border-bottom: 0; color: var(--muted); font-size: 14px; justify-content: space-between; }

input, select, textarea, button, .button {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
}
textarea { width: 100%; resize: vertical; }
button, .button {
  display: inline-block; background: var(--accent); color: var(--on-accent); border-color: var(--accent);
  font-weight: 700; cursor: pointer; text-decoration: none;
}
button:disabled { opacity: .6; cursor: progress; }
button.ghost, .button.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
button.danger { color: var(--bad); }
button.link { background: none; border: 0; padding: 0; color: var(--accent); font-weight: 400; text-decoration: underline; }
.button.google { margin-bottom: 18px; }

.hero { padding: 24px 0 8px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }
.features { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.features li { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 4px 16px 12px; }
.steps li { margin-bottom: 6px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 4px 18px 18px; margin-top: 22px; }
details.panel { padding: 12px 18px; }
details.panel summary, .actions summary { cursor: pointer; font-weight: 700; color: var(--accent); }
.narrow { max-width: 480px; }
.stack { display: grid; gap: 12px; max-width: 480px; }
.stack label, .fields label { display: grid; gap: 4px; font-weight: 600; font-size: 14px; }
.stack label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; font-size: 16px; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; align-items: end; margin-top: 12px; }
.fields .wide { grid-column: 1 / -1; }
.fields.compact { grid-template-columns: 1fr; min-width: 220px; }
.trap { position: absolute; left: -10000px; }
.message { margin: 0; min-height: 1.4em; }
.message.bad { color: var(--bad); }
.message.good { color: var(--good); }

.note { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 8px; padding: 12px 16px; margin: 0 0 18px; }
.note p { margin: 0 0 10px; }
.note.conflict { border-left-color: var(--warn); }
.msg { white-space: pre-wrap; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; margin-bottom: 8px; }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.tabs a { padding: 8px 12px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs a.on { color: var(--ink); border-bottom-color: var(--accent); font-weight: 700; }
.tabs .status { margin-left: auto; font-size: 13px; }
.toolbar input { width: 100%; max-width: 520px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0 16px; }
.chip { border: 1px solid var(--line); border-radius: 99px; padding: 2px 10px; text-decoration: none; color: var(--ink); font-size: 14px; }
.chip.on { border-color: var(--accent); background: var(--accent); color: var(--on-accent); }
.chip.on .muted { color: inherit; }

table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
td.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-start; }
td.actions button, td.actions .button { padding: 4px 10px; font-size: 14px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 12px 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.card .k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.card .n { font-size: 26px; font-weight: 800; }

@media (max-width: 720px) {
  table, tbody, tr, td { display: block; }
  thead { display: none; }
  tr { border-bottom: 1px solid var(--line); padding: 8px 0; }
  td { border: 0; padding: 2px 0; }
}

@media print {
  header.site, footer.site, .tabs, .noprint, .actions, details, .note { display: none !important; }
  main { padding: 0; max-width: none; }
  body { color: #000; background: #fff; }
}