:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #16181d;
  --muted: #5d6573;
  --line: #e2e5ea;
  --accent: #1a73e8;
  --accent-text: #ffffff;
  --input: #ffffff;
  --code-bg: #0f1419;
  --code-text: #d6deeb;
  --good: #137333;
  --good-bg: #e6f4ea;
  --warn: #8a5300;
  --warn-bg: #fef3d6;
  --bad: #b3261e;
  --bad-bg: #fce8e6;
  --tip: #3c5a99;
  --tip-bg: #e8effc;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --panel: #161b22;
    --text: #e6edf3;
    --muted: #9aa4b2;
    --line: #2b323c;
    --accent: #4c8dff;
    --input: #0d1117;
    --code-bg: #0a0d12;
    --good: #7ee2a0;
    --good-bg: #12301f;
    --warn: #f5c563;
    --warn-bg: #3a2c0c;
    --bad: #ff8a80;
    --bad-bg: #3b1515;
    --tip: #a9c3ff;
    --tip-bg: #16243f;
  }
}

* { box-sizing: border-box; }

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

a { color: var(--accent); }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

.top { border-bottom: 1px solid var(--line); background: var(--panel); }
.top-inner { display: flex; gap: 24px; align-items: center; justify-content: space-between; padding-top: 22px; padding-bottom: 22px; }
.top h1 { margin: 0 0 4px; font-size: 26px; letter-spacing: -0.01em; }
.lede { margin: 0; color: var(--muted); max-width: 720px; }
.top-links a {
  display: inline-block; white-space: nowrap; text-decoration: none; font-weight: 600;
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; color: var(--text);
}
.top-links a:hover { border-color: var(--accent); }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; padding-top: 24px; padding-bottom: 24px; align-items: start; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }

fieldset { border: 0; margin: 0 0 22px; padding: 0; }
fieldset[hidden] { display: none; }
legend { font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 10px; }

label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 12px; }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.req { color: var(--bad); }
.muted { color: var(--muted); font-weight: 400; }
.hint { color: var(--muted); font-size: 13px; margin: -4px 0 12px; }

input, select, textarea {
  display: block; width: 100%; margin-top: 5px; padding: 9px 11px;
  font: inherit; font-weight: 400; color: var(--text); background: var(--input);
  border: 1px solid var(--line); border-radius: 8px;
}
input[type="checkbox"] { width: auto; margin: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
input:disabled, select:disabled { opacity: 0.45; }
textarea { resize: vertical; }
.invalid { border-color: var(--bad); background: var(--bad-bg); }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }

.hours { display: grid; gap: 8px; margin-bottom: 10px; }
.hours.off { opacity: 0.5; }
.hour-row { display: grid; grid-template-columns: 96px 150px 1fr auto 1fr; gap: 8px; align-items: center; }
.hour-row .day { font-weight: 600; font-size: 13px; }
.hour-row select, .hour-row input { margin: 0; }
.dash { color: var(--muted); }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.toolbar.small { margin: 0; }

.btn {
  font: inherit; font-weight: 600; font-size: 13px; cursor: pointer;
  border-radius: 8px; padding: 8px 14px; border: 1px solid var(--line);
  background: transparent; color: var(--text);
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }

.sticky { position: sticky; top: 16px; }

.status { font-weight: 700; border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; }
.status.good { color: var(--good); background: var(--good-bg); }
.status.warn { color: var(--warn); background: var(--warn-bg); }
.status.bad { color: var(--bad); background: var(--bad-bg); }

.findings { list-style: none; margin: 0 0 16px; padding: 0; max-height: 220px; overflow: auto; }
.findings li { font-size: 13px; padding: 6px 4px; border-bottom: 1px solid var(--line); cursor: pointer; }
.findings li:last-child { border-bottom: 0; }
.findings .tag { display: inline-block; min-width: 62px; text-align: center; font-size: 11px; font-weight: 700; text-transform: uppercase; border-radius: 4px; padding: 1px 6px; margin-right: 6px; }
.findings .error .tag { color: var(--bad); background: var(--bad-bg); }
.findings .warning .tag { color: var(--warn); background: var(--warn-bg); }
.findings .tip .tag { color: var(--tip); background: var(--tip-bg); }

.code-head { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin-bottom: 8px; font-size: 13px; color: var(--muted); }
.code {
  margin: 0; background: var(--code-bg); color: var(--code-text); border-radius: 10px;
  padding: 16px; font: 12.5px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace;
  overflow: auto; max-height: 56vh; white-space: pre;
}
.code .k { color: #82aaff; }
.code .s { color: #c3e88d; }
.code .n { color: #f78c6c; }
.code .l { color: #c792ea; }
.test-links { font-size: 13px; color: var(--muted); margin: 12px 0 0; }

.notes { padding-bottom: 8px; }
.notes h2 { font-size: 18px; }
.notes li { margin-bottom: 6px; color: var(--muted); }
.notes b { color: var(--text); }

.foot { color: var(--muted); font-size: 13px; padding-top: 16px; padding-bottom: 40px; border-top: 1px solid var(--line); }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0;
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-weight: 600;
  transition: opacity .2s, transform .2s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sticky { position: static; }
  .top-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .grid2 { grid-template-columns: 1fr; }
  .hour-row { grid-template-columns: 1fr 1fr; }
  .hour-row .day { grid-column: 1 / -1; }
  .hour-row .dash { display: none; }
}