:root {
  color-scheme: light dark;
  --background: #ffffff;
  --foreground: #202020;
  --muted: #606060;
  --line: #d8d8d8;
  --panel: #f7f7f5;
  --link: #174ea6;
  --pass: #276738;
  --fail: #9b2c2c;
  --wait: #7a5510;
  --unknown: #555555;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #151515;
    --foreground: #e9e9e9;
    --muted: #aaaaaa;
    --line: #3c3c3c;
    --panel: #1d1d1d;
    --link: #8ab4f8;
    --pass: #78c78a;
    --fail: #ef9292;
    --wait: #e1b661;
    --unknown: #bbbbbb;
  }
}

* { box-sizing: border-box; }

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

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

main {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 72px;
}

h1 { margin: 0 0 8px; font-size: clamp(1.7rem, 4vw, 2.25rem); line-height: 1.2; }
h2 { margin: 0 0 12px; font-size: 1.25rem; }
h3 { margin: 0 0 8px; font-size: 1rem; }
p { margin: 8px 0 16px; }
.lede { max-width: 720px; font-size: 1.08rem; }
.muted, .eyebrow { color: var(--muted); }
.eyebrow { margin: 0 0 8px; font-size: .85rem; }

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  padding: 0;
  margin: 28px 0;
  list-style: none;
}

.flow li, .panel, .result {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 16px;
}

.flow strong, .flow span { display: block; }
.flow span { color: var(--muted); font-size: .85rem; margin-top: 4px; }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .85fr);
  gap: 20px;
  align-items: start;
}

.presets { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
button, select {
  font: inherit;
  color: inherit;
  background: var(--background);
  border: 1px solid var(--line);
  border-radius: 3px;
}
button { padding: 7px 10px; cursor: pointer; text-align: left; }
button[aria-pressed="true"] { border-color: currentColor; font-weight: 600; }
button:focus-visible, select:focus-visible, input:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

fieldset { border: 0; padding: 0; margin: 24px 0 0; }
legend { font-weight: 600; margin-bottom: 10px; }
.field { display: grid; grid-template-columns: 1fr 180px; align-items: center; gap: 16px; padding: 9px 0; border-top: 1px solid var(--line); }
.field select { width: 100%; padding: 6px; }
.check { grid-template-columns: auto 1fr; }
.check input { width: 18px; height: 18px; margin: 0; }

.result { border-left-width: 5px; }
.result[data-tone="pass"] { border-left-color: var(--pass); }
.result[data-tone="fail"] { border-left-color: var(--fail); }
.result[data-tone="wait"] { border-left-color: var(--wait); }
.result[data-tone="unknown"] { border-left-color: var(--unknown); }
.result-state { margin: 4px 0; font-size: 1.45rem; font-weight: 650; }
.result-action { font-weight: 600; }
.result ul { padding-left: 20px; }

.limits, footer { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 22px; }
.limits ul { padding-left: 20px; }
footer { color: var(--muted); font-size: .88rem; }

@media (max-width: 760px) {
  .flow { grid-template-columns: 1fr; }
  .workspace { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .field { grid-template-columns: 1fr; gap: 6px; }
  .check { grid-template-columns: auto 1fr; }
}