:root {
  color-scheme: dark;
  --bg: #14121f;
  --panel: #1d1a2e;
  --field: #131120;
  --line: #322e49;
  --ink: #ece8df;
  --muted: #9f9bb5;
  --accent: #ffb547;
  --accent-ink: #241a06;
  --ok: #7fd9a2;
  --warn: #ffcf70;
  --bad: #ff8f85;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { background: var(--bg); }

body {
  margin: 0; padding: 20px 20px 48px; color: var(--ink); background: var(--bg);
  font: 15px/1.45 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

p { margin: 0; }
code { font-family: Consolas, "Cascadia Mono", monospace; font-size: 13px; color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.page { max-width: 1180px; margin: 0 auto; display: grid; gap: 16px; }
.top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; }
h1 {
  margin: 0; font-size: 24px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}
.tagline { color: var(--muted); }
.author { margin-left: auto; color: var(--muted); }
.author a { color: var(--accent); font-weight: 700; text-decoration: none; }
.author a:hover { text-decoration: underline; }

.columns { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 16px; }
.column { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.column > :last-child { flex: 1; display: flex; flex-direction: column; }
@media (max-width: 900px) {
  .columns { grid-template-columns: minmax(0, 1fr); }
}

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; min-width: 0;
}
h2, legend {
  margin: 0 0 10px; padding: 0; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted);
}
.hint { color: var(--muted); font-size: 13px; }
.panel > .hint { margin-top: 8px; }

button {
  font: inherit; font-weight: 600; color: var(--ink); background: #2a2642; border: 1px solid var(--line);
  border-radius: 9px; padding: 8px 14px; cursor: pointer;
}
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.quiet { background: none; color: var(--muted); font-weight: 400; }

input, select {
  font: inherit; color: var(--ink); background: var(--field); border: 1px solid var(--line); border-radius: 8px;
  padding: 7px 10px; min-width: 0;
}
input[type=number] { width: 86px; }
input[type=color] { width: 54px; height: 34px; padding: 3px; }
input[type=range] {
  flex: 1 1 140px; max-width: 220px; padding: 0; border: 0; background: none; accent-color: var(--accent);
}
input[type=checkbox] { width: 17px; height: 17px; accent-color: var(--accent); flex: none; margin: 2px 0 0; }

.row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.row > input[type=text] { flex: 1 1 140px; }

#link { font-family: Consolas, "Cascadia Mono", monospace; font-size: 13px; }
#link.stale { opacity: .45; }
.status { margin-top: 10px; font-size: 14px; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.warn { color: var(--warn); }
.status.bad { color: var(--bad); }

.preview {
  position: relative; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; border: 1px solid var(--line);
  background: repeating-conic-gradient(#201d33 0% 25%, #191728 0% 50%) 0 0 / 28px 28px;
}
.preview iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; color-scheme: light; }

fieldset { border: 0; margin: 0 0 18px; padding: 0; display: grid; gap: 12px; min-width: 0; }
fieldset:last-of-type { margin-bottom: 6px; }
fieldset:last-child { margin-bottom: 0; }
.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 24px; align-items: start; }
.group { display: grid; gap: 12px; min-width: 0; }
@media (max-width: 520px) {
  .split { grid-template-columns: minmax(0, 1fr); }
}
.field { display: grid; gap: 4px; min-width: 0; }
.field > label, .field > .label { font-weight: 600; }
.check { display: flex; gap: 9px; align-items: flex-start; }
.check span { display: block; }

.switch {
  display: inline-flex; justify-self: start; border: 1px solid var(--line); border-radius: 9px; overflow: hidden;
}
.switch button { border: 0; border-radius: 0; background: var(--field); color: var(--muted); }
.switch button.on { background: var(--accent); color: var(--accent-ink); }

.summary { font-size: 13px; color: var(--muted); }
.summary.bad { color: var(--bad); }
.footer { display: flex; justify-content: flex-end; margin-top: auto; }