:root {
  --bg: #0d0c0a;
  --panel: #131210;
  --ink: #f0ede4;
  --muted: #8f897c;
  --accent: #d97757;
  --rule: #262320;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--bg); }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); }
a:hover, a:focus-visible { border-bottom-color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: 42rem; margin: 0 auto; padding: 0 1.25rem; }

/* ── Masthead ─────────────────────────────────────────── */
header.site {
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.78rem;
}
header.site .wrap {
  display: flex; justify-content: space-between; align-items: baseline;
  padding-top: 1rem; padding-bottom: 1rem; gap: 1rem;
}
header.site .host { color: var(--ink); font-weight: 500; letter-spacing: 0.02em; }
header.site .host::before { content: "> "; color: var(--accent); }
header.site .meta { color: var(--muted); text-align: right; }

/* ── Hero ─────────────────────────────────────────────── */
.hero { padding: 5.5rem 0 4rem; }
.eyebrow {
  font-family: var(--mono); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.5rem;
}
h1 {
  font-family: var(--mono);
  font-size: clamp(2rem, 6.5vw, 3.4rem);
  font-weight: 700; line-height: 1.12; letter-spacing: -0.03em;
  margin-bottom: 2rem;
}
.nowrap { white-space: nowrap; }
.cursor {
  display: inline-block; width: 0.55em; height: 1em;
  background: var(--accent); vertical-align: text-bottom; margin-left: 0.12em;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.lede {
  font-size: 1.35rem; line-height: 1.55; font-weight: 500;
  max-width: 36rem;
}
.lede em { color: var(--accent); font-style: italic; }

/* ── Sections ─────────────────────────────────────────── */
section { padding: 3.5rem 0; border-top: 1px solid var(--rule); }
.sec-label {
  font-family: var(--mono); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 2rem;
}
.sec-label b { color: var(--accent); font-weight: 700; }
section p + p { margin-top: 1.1rem; }
section h3 { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; margin: 2.4rem 0 0.8rem; }

/* Beobachtungen */
.obs { margin-top: 2.2rem; }
.obs .num {
  font-family: var(--mono); font-size: 0.82rem; font-weight: 700;
  color: var(--accent); display: block; margin-bottom: 0.35rem;
}
.obs h3 { margin: 0 0 0.6rem; }
@media (min-width: 60rem) {
  .obs { position: relative; }
  .obs .num { position: absolute; left: -4rem; top: 0.45rem; margin: 0; }
}

blockquote {
  border-left: 2px solid var(--accent);
  padding: 0.4rem 0 0.4rem 1.4rem;
  margin: 2rem 0;
  font-size: 1.3rem; line-height: 1.5; font-style: italic; font-weight: 500;
}

/* Bäume */
.trees {
  display: grid; gap: 1rem; margin: 2rem 0;
  grid-template-columns: 1fr;
}
@media (min-width: 40rem) { .trees { grid-template-columns: 1fr 1fr; } }
.tree {
  background: var(--panel); border: 1px solid var(--rule); border-radius: 6px;
  padding: 1.1rem 1.25rem;
  font-family: var(--mono); font-size: 0.82rem; line-height: 1.9;
  overflow-x: auto;
}
.tree .cap {
  font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 0.7rem;
}
.tree pre { font-family: inherit; }
.tree.in .cap { color: var(--accent); }
.tree.in .root { color: var(--accent); font-weight: 700; }
.tree.out { color: var(--muted); }
.tree.out .cap { color: var(--muted); }
.tree.out .root { font-weight: 700; }
.tree .branch { color: var(--muted); }
.tree.in .leaf { color: var(--ink); }

/* Werte-Diff */
.diff {
  background: var(--panel); border: 1px solid var(--rule); border-radius: 6px;
  font-family: var(--mono); font-size: 0.86rem; line-height: 1.75;
  margin: 2rem 0; overflow-x: auto;
}
.diff .head {
  border-bottom: 1px solid var(--rule); padding: 0.6rem 1.25rem;
  color: var(--muted); font-size: 0.75rem;
}
.diff .body { padding: 1rem 1.25rem; }
.diff .pair + .pair { margin-top: 0.8rem; }
.diff .add { color: var(--ink); white-space: nowrap; }
.diff .add::before { content: "+ "; color: var(--accent); font-weight: 700; }
.diff .del { color: var(--muted); white-space: nowrap; }
.diff .del::before { content: "- "; font-weight: 700; }
.diff-note { font-size: 0.95rem; color: var(--muted); }

/* Prinzipien */
ol.principles { list-style: none; counter-reset: p; margin-top: 2rem; }
ol.principles li { counter-increment: p; margin-top: 1.8rem; }
ol.principles li::before {
  content: counter(p, decimal-leading-zero);
  font-family: var(--mono); font-size: 0.82rem; font-weight: 700;
  color: var(--accent); display: block; margin-bottom: 0.3rem;
}
ol.principles b { font-weight: 600; }
@media (min-width: 60rem) {
  ol.principles li { position: relative; }
  ol.principles li::before { position: absolute; left: -4rem; top: 0.3rem; margin: 0; }
}

/* ── Mitwirken ────────────────────────────────────────── */
form.fb { margin-top: 2rem; }
form.fb .lbl {
  display: block; font-family: var(--mono); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 0.6rem;
}
form.fb textarea {
  width: 100%; min-height: 9rem; resize: vertical;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 6px;
  padding: 0.9rem 1rem;
  font-family: var(--serif); font-size: 1rem; line-height: 1.6;
}
form.fb textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
form.fb button {
  margin-top: 1rem; display: inline-block;
  font-family: var(--mono); font-size: 0.8rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--accent); color: var(--bg);
  border: none; border-radius: 4px; padding: 0.8rem 1.5rem; cursor: pointer;
}
form.fb button:hover { background: color-mix(in srgb, var(--accent) 82%, white); }
form.fb .note { font-size: 0.9rem; color: var(--muted); margin-top: 0.9rem; }
/* Honeypot: visually removed, still in the form for bots that fill every field. */
form.fb .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Danke-Seite */
.thanks { padding: 6rem 0; }
.thanks h1 { margin-bottom: 1rem; }
.thanks p { max-width: 36rem; }
.thanks a.back { display: inline-block; margin-top: 2rem; font-family: var(--mono); font-size: 0.82rem; }

/* ── Footer ───────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--rule);
  padding: 3rem 0 4rem;
  font-family: var(--mono); font-size: 0.78rem; color: var(--muted);
}
footer p + p { margin-top: 0.8rem; }
footer .live { color: var(--ink); font-family: var(--serif); font-size: 1.05rem; font-style: italic; margin-bottom: 1.4rem; }

/* ── Print ────────────────────────────────────────────── */
@media print {
  :root { --bg: #fff; --panel: #f4f2ec; --ink: #111; --muted: #555; --rule: #ccc; }
  body { font-size: 11pt; }
  .cursor { display: none; }
  a { border-bottom: none; }
}