/* ============================================================
   reader.felixurbat.de — geteiltes Stylesheet
   Ein ruhiger Lese-Reader. Inspiriert von thenetworkstate.com
   und Tufte-CSS (Sidenotes). Light + Dark, warm, papierartig.
   ============================================================ */

:root {
  /* Light (Papier) */
  --bg:        #faf8f3;
  --bg-soft:   #f1ede3;
  --ink:       #2b2622;
  --ink-soft:  #6b6356;
  --ink-faint: #9a9082;
  --rule:      #e3dccd;
  --accent:    #8a2c2c;   /* gedämpftes Bordeaux */
  --accent-soft:#b56b6b;
  --sel:       #e9dfc8;
  --mark:      #ffe27a;   /* Markierungen (Highlight) */

  --serif: "Newsreader", Charter, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --measure: 38rem;        /* Lesespalte */
  --margin-w: 15rem;       /* Marginalie für Sidenotes */
}

html[data-theme="dark"] {
  --bg:        #16140f;
  --bg-soft:   #211d16;
  --ink:       #e7ded0;
  --ink-soft:  #b3a994;
  --ink-faint: #7c7261;
  --rule:      #322c22;
  --accent:    #d98a8a;
  --accent-soft:#a85f5f;
  --sel:       #3a3326;
  --mark:      #6a5618;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.18rem;
  line-height: 1.72;
  font-optical-sizing: auto;
  transition: background .35s ease, color .35s ease;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--sel); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* ---------- Fortschrittsbalken ---------- */
.progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px;
  background: transparent; z-index: 60;
}
.progress__bar {
  height: 100%; width: 0;
  background: var(--accent);
  transition: width .1s linear;
}

/* ---------- Inhaltsverzeichnis (Sidebar) ---------- */
.toc {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: 19rem; padding: 3.2rem 1.4rem 2rem 1.8rem;
  overflow-y: auto; z-index: 50;
  background: var(--bg);
  border-right: 1px solid var(--rule);
  transform: translateX(-100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  -webkit-overflow-scrolling: touch;
}
.toc.is-open { transform: translateX(0); }
.toc__home {
  display: inline-block; font-family: var(--sans);
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 1.6rem;
}
.toc__title {
  font-size: .95rem; font-weight: 600; line-height: 1.35;
  margin: 0 0 1.4rem; color: var(--ink-soft);
}
.toc nav { font-family: var(--sans); font-size: .82rem; line-height: 1.45; }
.toc a {
  display: block; color: var(--ink-soft);
  padding: .26rem 0; border-left: 2px solid transparent;
  padding-left: .7rem; margin-left: -.7rem;
  transition: color .15s, border-color .15s;
}
.toc a:hover { color: var(--ink); text-decoration: none; }
.toc a.lvl-2 { font-weight: 600; color: var(--ink); margin-top: .9rem; text-transform: uppercase; letter-spacing: .04em; font-size: .76rem; }
.toc a.lvl-3 { padding-left: 1.1rem; }
.toc a.lvl-4 { padding-left: 1.7rem; color: var(--ink-faint); font-size: .78rem; }
.toc a.is-active { color: var(--accent); border-left-color: var(--accent); }

/* ---------- Floating-Buttons ---------- */
.fab {
  position: fixed; z-index: 55;
  width: 2.7rem; height: 2.7rem; border-radius: 50%;
  border: 1px solid var(--rule); background: var(--bg);
  color: var(--ink-soft); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; box-shadow: 0 2px 10px rgba(0,0,0,.06);
  transition: color .2s, background .2s, transform .15s;
}
.fab:hover { color: var(--accent); transform: translateY(-1px); }
.fab--toc   { top: 1.1rem; left: 1.1rem; }
.fab--theme { top: 1.1rem; right: 1.1rem; }

/* ---------- Dokument ---------- */
.doc {
  max-width: calc(var(--measure) + var(--margin-w) + 4rem);
  margin: 0 auto; padding: 5rem 2rem 8rem;
}
.doc__head {
  max-width: var(--measure);
  margin: 2rem 0 3.5rem; padding-bottom: 2.2rem;
  border-bottom: 1px solid var(--rule);
}
.doc__kicker {
  font-family: var(--sans); font-size: .76rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent);
  margin: 0 0 1.1rem;
}
.doc__title {
  font-size: 3rem; line-height: 1.08; font-weight: 500;
  letter-spacing: -.015em; margin: 0 0 .6rem;
}
.doc__subtitle {
  font-size: 1.3rem; line-height: 1.4; color: var(--ink-soft);
  font-style: italic; font-weight: 400; margin: 0 0 1.6rem;
}
.doc__meta {
  font-family: var(--sans); font-size: .82rem; color: var(--ink-faint);
  margin: 0;
}

.doc__body { max-width: var(--measure); position: relative; }

/* Überschriften */
.doc__body h2 {
  font-size: 1.05rem; font-family: var(--sans); font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
  margin: 4.5rem 0 .4rem; padding-top: 1rem;
  scroll-margin-top: 2rem;
}
.doc__body h2 + .chapter-title {
  font-family: var(--serif); font-size: 1.7rem; font-weight: 500;
  line-height: 1.25; color: var(--ink); margin: 0 0 1.5rem;
  letter-spacing: -.01em;
}
.doc__body h3 {
  font-size: 1.5rem; font-weight: 500; line-height: 1.3;
  margin: 3rem 0 .8rem; scroll-margin-top: 2rem;
}
.doc__body h4 {
  font-size: 1.18rem; font-weight: 600; font-style: italic;
  color: var(--ink-soft); margin: 2.2rem 0 .6rem; scroll-margin-top: 2rem;
}

/* Absätze */
.para { margin: 0 0 1.35rem; position: relative; }
.para__num {
  position: absolute; left: -3.2rem; top: .2em;
  width: 2.5rem; text-align: right;
  font-family: var(--sans); font-size: .72rem; font-weight: 500;
  color: var(--ink-faint); cursor: pointer; user-select: none;
  padding-top: .15em; transition: color .15s;
}
.para__num:hover { color: var(--accent); }
.para:target { background: var(--sel); border-radius: 4px;
  box-shadow: 0 0 0 .5rem var(--sel); }
.para i, .doc__body em { font-style: italic; }

/* ---------- Sidenotes (Tufte) ---------- */
.sn-ref {
  font-family: var(--sans); font-size: .62em; font-weight: 600;
  vertical-align: super; line-height: 0; color: var(--accent);
  cursor: pointer; padding: 0 .12em;
}
.sn-ref:hover { text-decoration: none; }
.sidenote {
  float: right; clear: right;
  width: var(--margin-w);
  margin-right: calc(-1 * (var(--margin-w) + 2.2rem));
  margin-bottom: 1.1rem; margin-top: .15rem;
  font-family: var(--sans); font-size: .76rem; line-height: 1.5;
  color: var(--ink-soft); text-align: left;
}
.sidenote__num { color: var(--accent); font-weight: 600; margin-right: .35em; }
.sidenote i { font-style: italic; }

/* Schmaler: Sidenotes einklappen, per Klick inline aufklappen */
@media (max-width: 1180px) {
  .doc { max-width: calc(var(--measure) + 4rem); }
  .sidenote {
    display: none; float: none; width: auto; margin: .8rem 0;
    padding: .8rem 1rem; background: var(--bg-soft); border-radius: 6px;
    border-left: 3px solid var(--accent);
  }
  .sidenote.is-open { display: block; }
  .para__num { left: -2.4rem; font-size: .68rem; width: 1.9rem; }
}
@media (max-width: 640px) {
  body { font-size: 1.08rem; }
  .doc { padding: 4.5rem 1.4rem 6rem; }
  .doc__title { font-size: 2.1rem; }
  .para__num {
    position: static; display: inline; left: auto; width: auto;
    text-align: left; margin-right: .5em; padding: 0;
  }
}

/* ---------- Anmerkungen (Ende, für Druck/Fallback) ---------- */
.endnotes {
  max-width: var(--measure); margin-top: 6rem;
  padding-top: 2rem; border-top: 1px solid var(--rule);
  font-family: var(--sans); font-size: .82rem; line-height: 1.6;
  color: var(--ink-soft);
}
.endnotes h2 {
  font-size: .9rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 1.4rem;
}
.endnotes ol { padding-left: 1.6rem; }
.endnotes li { margin-bottom: .7rem; scroll-margin-top: 4rem; }
.endnotes li:target { color: var(--ink); }
.endnotes a.backref { margin-left: .3em; }

/* ---------- Bibliotheks-Index ---------- */
.lib { max-width: 50rem; margin: 0 auto; padding: 6rem 2rem 8rem; }
.lib__head { margin-bottom: 4rem; }
.lib__kicker {
  font-family: var(--sans); font-size: .76rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 1rem;
}
.lib__title { font-size: 3.2rem; font-weight: 500; letter-spacing: -.02em; margin: 0 0 1rem; }
.lib__intro { font-size: 1.25rem; color: var(--ink-soft); line-height: 1.55; font-style: italic; max-width: 34rem; }
.lib__list { list-style: none; padding: 0; margin: 0; }
.card {
  display: block; padding: 1.8rem 0; border-top: 1px solid var(--rule);
  transition: padding-left .2s;
}
.card:hover { padding-left: .6rem; text-decoration: none; }
.card:last-child { border-bottom: 1px solid var(--rule); }
.card__kicker {
  font-family: var(--sans); font-size: .72rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent-soft); margin: 0 0 .4rem;
}
.card__title { font-size: 1.7rem; font-weight: 500; color: var(--ink); margin: 0 0 .5rem; line-height: 1.2; }
.card__desc { color: var(--ink-soft); font-size: 1.05rem; line-height: 1.5; margin: 0; }
.card__meta { font-family: var(--sans); font-size: .78rem; color: var(--ink-faint); margin: .6rem 0 0; }

/* ---------- Toast (Link kopiert) ---------- */
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(2rem);
  background: var(--ink); color: var(--bg); font-family: var(--sans);
  font-size: .82rem; padding: .6rem 1.1rem; border-radius: 6px;
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 70;
}
.toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Markierungen ---------- */
::highlight(reader-mark) { background-color: var(--mark); color: inherit; }

.mark-pop {
  position: absolute; z-index: 65; display: none;
  transform: translate(-50%, calc(-100% - 10px));
  background: var(--ink); border-radius: 8px;
  box-shadow: 0 6px 22px rgba(0,0,0,.22);
}
.mark-pop.is-visible { display: block; }
.mark-pop::after {   /* kleines Dreieck nach unten */
  content: ""; position: absolute; left: 50%; bottom: -5px; transform: translateX(-50%) rotate(45deg);
  width: 10px; height: 10px; background: var(--ink); border-radius: 1px;
}
.mark-pop button {
  position: relative; z-index: 1;
  background: none; border: 0; color: var(--bg); cursor: pointer;
  font-family: var(--sans); font-size: .82rem; padding: .55rem 1rem;
  display: flex; align-items: center; gap: .45rem; white-space: nowrap;
}
.mark-pop button:hover { color: var(--accent-soft); }

/* ---------- Weiterlesen-Pille ---------- */
.resume {
  position: fixed; bottom: 1.4rem; left: 50%; z-index: 58;
  transform: translateX(-50%) translateY(2.5rem);
  background: var(--accent); color: #fff; border: 0; cursor: pointer;
  font-family: var(--sans); font-size: .85rem; font-weight: 500;
  padding: .65rem 1.3rem; border-radius: 999px;
  box-shadow: 0 4px 18px rgba(0,0,0,.22);
  display: flex; align-items: center; gap: .6rem;
  opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s;
}
.resume.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.resume__x { opacity: .65; font-size: 1rem; line-height: 1; }
.resume__x:hover { opacity: 1; }

/* ---------- Print ---------- */
@media print {
  .toc, .fab, .progress, .toast { display: none !important; }
  .doc { max-width: 100%; padding: 0; }
  .sidenote { display: block; float: none; width: auto; margin: .5rem 0; color: #444; }
  body { font-size: 11pt; color: #000; background: #fff; }
}