:root {
  --bg:        #1d1f21;
  --text:      #c5c8c6;
  --text-dim:  #c5c8c6;
  --border:    #5c6370;
  --accent:    #81a2be;
  --error:     #ed8274;

  --mono: ui-monospace, Consolas, Menlo, monospace;
  --sans: "Liberation Sans", "Noto Serif", system-ui, -apple-system, "Segoe UI", sans-serif;
  --max-width: 1060px; /* narrowed for readable line length -- see note below */
}


* { box-sizing: border-box; }
html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
}

a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
code, .mono { font-family: var(--mono); }

.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(16px, 5vw, 200px);
}

header.site {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
header.site .shell {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand { font-weight: 600; font-size: 15px; }

nav.primary { font-size: 14px; }
nav.primary a { color: var(--text-dim); margin-left: 18px; text-decoration: none; }
nav.primary a:first-child { margin-left: 0; }
nav.primary a:hover { text-decoration: underline; }
nav.primary a[aria-current="page"] { color: var(--accent); }

main { padding: 36px 0 72px; }

footer.site {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  color: var(--text-dim);
  font-size: 12px;
}
footer.site .shell { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
footer.site .mono { font-family: var(--mono); }


h1 { font-size: 26px; font-weight: 600; margin: 0 0 10px; }
h3 { font-size: 20px; font-weight: 600; margin: 1.4em 0 0.5em; }
h4 { font-size: 16px; font-weight: 600; margin: 1.2em 0 0.4em; }

h1.title {
  margin-bottom: 2px;
}

oldh2 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  margin: 0 0 10px;
  padding-top: 18px;
  /*border-top: 1px solid var(--border);*/
}
oldh2:first-child { border-top: none; padding-top: 0; }
oldh2.subtitle {
  display: block;
  border-top: none; padding-top: 0; padding-bottom: 8px;
}

p.lede { color: var(--text-dim); max-width: 162ch; margin: 0 0 24px; }


.metrics { font-size: 14px; margin: 18px 0 28px; }
.metrics dt { color: var(--text-dim); display: inline-block; width: 220px; }
.metrics dd { display: inline; margin: 0; color: var(--text); font-family: var(--mono); }
.metrics div { margin-bottom: 4px; }

ul.section-links {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 15px;
}
ul.section-links li { margin-bottom: 10px; }
ul.section-links a { text-decoration: underline; }
ul.section-links span.desc { color: var(--text-dim); margin-left: 8px; font-size: 14px; }

.panel { padding: 0; margin-bottom: 28px; }

.field-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 4px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; color: var(--text-dim); }

input[type="text"], input[type="number"] {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  padding: 7px 9px;
  min-width: 160px;
}
input[type="checkbox"] { accent-color: var(--accent); }

.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-dim); padding-bottom: 8px; }

button {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 0;
  padding: 0px 16px;
  cursor: pointer;
  height: 24px;
}
button:hover { background: var(--accent); color: #06110d; }
button:disabled { background: transparent; color: var(--text-dim); border-color: var(--border); cursor: not-allowed; }

.result { margin-top: 18px; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 5px 14px; font-size: 13px; margin-bottom: 14px; }
.kv dt { color: var(--text-dim); }
.kv dd { margin: 0; color: var(--text); font-family: var(--mono); word-break: break-all; }

.hexblock {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 12px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  word-break: break-all;
  line-height: 1.6;
  max-height: 200px;
  overflow-y: auto;
}

.codeblock {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 12px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  overflow-wrap: anywhere;
  word-break: normal;
  line-height: 1.6;
}

.plot-img { display: block; max-width: 100%; border: 1px solid var(--border); border-radius: 0; margin-top: 14px; }

canvas {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0;
}

.card {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 18px;
}

table.pvals { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 13px; }
table.pvals th, table.pvals td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
table.pvals th { color: var(--text-dim); font-weight: 600; font-size: 11px; text-transform: uppercase; font-family: var(--sans); }

.status { font-family: var(--sans); font-size: 13px; padding: 8px 0; display: none; }
.status.loading { display: block; color: var(--text-dim); }
.status.error { display: block; color: var(--error); }

@media (max-width: 640px) {
  nav.primary a { margin-left: 12px; }
  .metrics dt { width: auto; margin-right: 8px; }
  .kv { grid-template-columns: 1fr; }
}