:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #16181d;
  --muted: #61666f;
  --line: #e2e5ea;
  --accent: #1a73e8;
  --accent-ink: #ffffff;
  --ok: #137333;
  --warn: #9a6400;
  --warn-bg: #fdf3dc;
  --err: #b3261e;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101216;
    --card: #181b21;
    --ink: #e8eaed;
    --muted: #9aa0a6;
    --line: #2a2e36;
    --accent: #8ab4f8;
    --accent-ink: #10131a;
    --ok: #81c995;
    --warn: #fdd663;
    --warn-bg: #2d2717;
    --err: #f2b8b5;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.head { text-align: center; margin-bottom: 28px; }
.kicker { margin: 0 0 8px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
h1 { margin: 0 0 12px; font-size: clamp(26px, 5vw, 38px); line-height: 1.2; letter-spacing: -.02em; }
.sub { margin: 0 auto; max-width: 52ch; color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
}

.label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 8px; }

.row { display: flex; gap: 10px; flex-wrap: wrap; }

input[type="text"] {
  flex: 1 1 260px;
  min-width: 0;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
}

input[type="text"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.out { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }

button, .button-link {
  padding: 12px 18px;
  font: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button:hover, .button-link:hover { filter: brightness(1.08); }
button:disabled { opacity: .6; cursor: progress; }

.secondary { background: transparent; color: var(--ink); border-color: var(--line); }

.hint { margin: 10px 0 0; font-size: 13px; color: var(--muted); }
.hint code { font-size: 12px; background: var(--bg); padding: 1px 5px; border-radius: 5px; }

.examples { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 14px; font-size: 13px; color: var(--muted); }
.chip {
  padding: 5px 11px;
  font-size: 12px;
  font-weight: 500;
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.status {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 18px;
  border: 1px solid var(--line);
  background: var(--card);
}
.status.error { color: var(--err); border-color: currentColor; }
.status.loading { color: var(--muted); }

.result-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.result h2 { margin: 0; font-size: 17px; }

.badge { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; border: 1px solid currentColor; }
.badge.exact { color: var(--ok); }
.badge.partial { color: var(--warn); }

.actions { margin-top: 12px; display: flex; gap: 10px; flex-wrap: wrap; }

.details { margin: 18px 0 0; display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 13px; }
.details dt { color: var(--muted); }
.details dd { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.details a { color: var(--accent); }

.note { margin: 16px 0 0; font-size: 13px; color: var(--muted); }
.note.warn { background: var(--warn-bg); color: var(--warn); padding: 10px 12px; border-radius: 8px; }

.help h2 { margin: 0 0 10px; font-size: 17px; }
.help ol { margin: 0; padding-left: 20px; color: var(--muted); }
.help li { margin-bottom: 4px; }

.foot { text-align: center; font-size: 13px; color: var(--muted); margin-top: 28px; }

.status strong { display: block; margin-bottom: 6px; }
.status p { margin: 6px 0 0; }
.status .why { color: var(--muted); }
.status a { color: inherit; }

.debug { margin-top: 10px; font-size: 12px; color: var(--muted); }
.debug summary { cursor: pointer; }
.debug pre {
  margin: 8px 0 0;
  padding: 10px;
  background: var(--bg);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 11px;
  line-height: 1.45;
}