/* Methodenseite: Fließtext mit Formeln.
 *
 * Eigene Datei, nicht style.css erweitert: dort ist die Seite ein
 * bildschirmfüllendes Canvas mit gesperrtem Scrollen, hier ist sie ein
 * Dokument. Gemeinsam sind nur Farben und Schrift. */

:root {
  --bg: #05060a;
  --panel: rgba(14, 17, 25, 0.82);
  --line: rgba(148, 163, 184, 0.18);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #03dac6;
  --accent-dim: rgba(3, 218, 198, 0.16);
  --radius: 10px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0 auto;
  padding: 0 20px 120px;
  max-width: 47rem;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.72;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ------------------------------------------------------------------ Kopf */

header.title {
  padding: 56px 0 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 26px;
}
.back:hover { color: var(--accent); }

h1 {
  margin: 0 0 10px;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0;
  font-size: 17px;
  color: var(--muted);
  line-height: 1.6;
}

.meta {
  margin: 22px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}
.meta code { font-size: 12px; }

/* --------------------------------------------------------- Gliederung */

nav.toc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px 22px;
  margin: 0 0 44px;
  font-size: 14px;
}
nav.toc h2 {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
nav.toc .toc-intro {
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
nav.toc .toc-intro a { color: var(--accent); }
nav.toc ol { margin: 0; padding-left: 1.35em; color: var(--muted); }
nav.toc li { margin: 3px 0; }
nav.toc a { color: var(--text); text-decoration: none; }
nav.toc a:hover { color: var(--accent); }

/* -------------------------------------------------------------- Fließtext */

h2 {
  margin: 62px 0 14px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  scroll-margin-top: 20px;
}
h2 .num { color: var(--accent); font-variant-numeric: tabular-nums; margin-right: 0.5em; }

h3 {
  margin: 38px 0 10px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--text);
}

p { margin: 0 0 16px; }

a { color: var(--accent); text-decoration-color: var(--accent-dim); text-underline-offset: 2px; }
a:hover { text-decoration-color: var(--accent); }

strong { font-weight: 600; }
em { font-style: italic; color: #cbd5e1; }

code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: rgba(148, 163, 184, 0.12);
  border-radius: 4px;
  padding: 1px 5px;
}

ul, ol { margin: 0 0 16px; padding-left: 1.4em; }
li { margin: 6px 0; }
li::marker { color: var(--muted); }

dl.terms { margin: 0 0 20px; }
dl.terms dt { font-weight: 600; margin-top: 12px; }
dl.terms dd { margin: 2px 0 0; color: #cbd5e1; }

/* ---------------------------------------------------------------- Formeln */

math { font-size: 1.02em; }

.eq {
  margin: 22px 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--accent-dim);
  overflow-x: auto;
  overflow-y: hidden;
}
.eq math { display: block; }

/* Nummerierte Gleichung: Formel links, Nummer rechts */
.eq.numbered {
  display: flex;
  align-items: center;
  gap: 16px;
}
.eq.numbered > math { flex: 1 1 auto; }
.eq .tag {
  flex: none;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.where {
  margin: -8px 0 20px 18px;
  font-size: 14px;
  color: var(--muted);
}

/* ---------------------------------------------------------------- Tabellen */

.tablewrap { overflow-x: auto; margin: 22px 0; }

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
}
th, td {
  text-align: left;
  padding: 7px 12px 7px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
td.num, th.num { text-align: right; padding-right: 18px; }
tbody tr:hover { background: rgba(148, 163, 184, 0.05); }
caption {
  caption-side: bottom;
  text-align: left;
  padding-top: 10px;
  font-size: 12.5px;
  color: var(--muted);
}

/* ------------------------------------------------------------ Randnotizen */

.note {
  margin: 24px 0;
  padding: 14px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14.5px;
  color: #cbd5e1;
}
.note p:last-child { margin-bottom: 0; }
.note b { color: var(--text); }

pre {
  margin: 20px 0;
  padding: 14px 16px;
  background: rgba(14, 17, 25, 0.9);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  color: #cbd5e1;
}
pre code { background: none; padding: 0; font-size: inherit; }

/* --------------------------------------------------------------- Literatur */

ol.refs { font-size: 14px; color: #cbd5e1; }
ol.refs li { margin: 10px 0; }

footer.end {
  margin-top: 72px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

@media (max-width: 640px) {
  body { font-size: 15.5px; padding: 0 16px 80px; }
  h1 { font-size: 25px; }
  h2 { font-size: 20px; margin-top: 48px; }
  .eq { padding-left: 12px; }
  .eq.numbered { flex-direction: column; align-items: flex-start; gap: 4px; }
}