/* ==========================================================================
   Cheatsheets – schlichtes, barrierearmes Layout ohne externe Abhängigkeiten
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f6f8;
  --bg-code: #eef1f5;
  --border: #d9dde3;
  --text: #1b1f24;
  --text-muted: #555d68;
  --accent: #2557d6;
  --accent-text: #1d4ab8;
  --accent-soft: #e6edfc;
  --focus: #2557d6;
  --warn-bg: #fff6e0;
  --warn-border: #e0b44c;
  --radius: 6px;
  --sidebar-w: 270px;
  --topbar-h: 52px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, "DejaVu Sans Mono", monospace;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #15181d;
  --bg-soft: #1c2027;
  --bg-code: #262b34;
  --border: #323843;
  --text: #e6e8eb;
  --text-muted: #a3aab5;
  --accent: #7ea6ff;
  --accent-text: #9dbbff;
  --accent-soft: #22304d;
  --focus: #9dbbff;
  --warn-bg: #33291a;
  --warn-border: #8a6a24;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15181d;
    --bg-soft: #1c2027;
    --bg-code: #262b34;
    --border: #323843;
    --text: #e6e8eb;
    --text-muted: #a3aab5;
    --accent: #7ea6ff;
    --accent-text: #9dbbff;
    --accent-soft: #22304d;
    --focus: #9dbbff;
    --warn-bg: #33291a;
    --warn-border: #8a6a24;
    color-scheme: dark;
  }
}

/* ---------- Basis ---------- */

*, *::before, *::after { box-sizing: border-box; }

/* hidden muss auch gegen eigene display-Regeln (z. B. mobile Kartenansicht) gewinnen */
[hidden] { display: none !important; }

html {
  scroll-padding-top: calc(var(--topbar-h) + 12px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.55 var(--font);
}

a { color: var(--accent-text); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

code, kbd {
  font-family: var(--mono);
  font-size: .875em;
}

code {
  background: var(--bg-code);
  padding: .1em .35em;
  border-radius: 4px;
  overflow-wrap: anywhere;
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: .05em .4em;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--bg-soft);
  text-align: center;
  white-space: nowrap;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 8px; top: -100px;
  z-index: 100;
  padding: .5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
}
.skip-link:focus { top: 8px; }

/* ---------- Kopfzeile ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: .5rem;
  height: var(--topbar-h);
  padding: 0 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 650;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.logo { flex: none; }
.logo-sheet { fill: var(--accent); }
.logo-fold { fill: var(--accent-soft); }
.logo-glyph {
  fill: none;
  stroke: var(--bg);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.version {
  font-size: .8rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}
.icon-btn:hover { background: var(--bg-soft); }

.icon-sun { display: none; }
:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }

.menu-btn { display: none; }

/* ---------- Layout ---------- */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: calc(100vh - var(--topbar-h));
}

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 1rem .75rem 2rem;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
}

.sidebar-search { margin-bottom: 1rem; }

input[type="search"] {
  width: 100%;
  padding: .5rem .7rem;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
input[type="search"]::placeholder { color: var(--text-muted); opacity: 1; }

.nav-group { margin-bottom: 1rem; }

.nav-group h2 {
  margin: 0 0 .25rem;
  padding: 0 .5rem;
  font-size: .75rem;
  font-weight: 650;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.nav-group ul { list-style: none; margin: 0; padding: 0; }

.nav-group a {
  display: block;
  padding: .3rem .5rem;
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-size: .95rem;
}
.nav-group a:hover { background: var(--bg-code); }
.nav-group a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
}

.nav-empty { padding: 0 .5rem; color: var(--text-muted); }

main {
  padding: 1.5rem clamp(1rem, 3vw, 2.5rem) 4rem;
  max-width: 1100px;
  width: 100%;
}
main:focus { outline: none; }

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

.sheet-head { margin-bottom: 1.25rem; }

.sheet-head .crumb {
  margin: 0;
  font-size: .85rem;
  color: var(--text-muted);
}
.sheet-head .crumb a { color: var(--accent-text); text-decoration: none; }
.sheet-head .crumb a:hover { text-decoration: underline; }

/* ---------- Startseite ---------- */

.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.home-cat {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  padding: 1rem 1rem 1.1rem;
}
.home-cat h2 {
  margin: 0 0 .6rem;
  padding-bottom: .4rem;
  font-size: 1.05rem;
  border-bottom: 1px solid var(--border);
}
.home-cat ul { list-style: none; margin: 0; padding: 0; }
.home-cat li + li { margin-top: .35rem; }

.home-cat a {
  display: block;
  padding: .4rem .55rem;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
}
.home-cat a:hover { background: var(--bg-code); }
.home-title { display: block; font-weight: 600; color: var(--accent-text); }
.home-desc { display: block; font-size: .85rem; color: var(--text-muted); margin-top: .1rem; }

.sheet-head h1 {
  margin: .1rem 0 .35rem;
  font-size: clamp(1.6rem, 3vw, 2rem);
  line-height: 1.2;
}

.sheet-head .lead {
  margin: 0;
  color: var(--text-muted);
  max-width: 70ch;
}

.sheet-tools {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
  margin: 1rem 0 .5rem;
}
.sheet-tools input { max-width: 360px; }
.sheet-tools .count { font-size: .875rem; color: var(--text-muted); }

.toc {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.toc a {
  display: inline-block;
  padding: .2rem .65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .875rem;
  color: var(--text);
  text-decoration: none;
}
.toc a:hover { border-color: var(--accent); color: var(--accent-text); }

/* ---------- Abschnitte & Tabellen ---------- */

.sheet section { margin-bottom: 2rem; }

.sheet h2 {
  margin: 0 0 .6rem;
  padding-bottom: .3rem;
  font-size: 1.3rem;
  border-bottom: 1px solid var(--border);
}

.sheet table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: .95rem;
}

.sheet th, .sheet td {
  padding: .45rem .6rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

.sheet thead th {
  font-size: .8rem;
  font-weight: 650;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-soft);
}

.sheet th:first-child, .sheet td:first-child { width: 42%; }

.sheet tbody tr:hover { background: var(--bg-soft); }

.sheet tr.sub th {
  padding-top: .9rem;
  font-size: .9rem;
  font-weight: 650;
  color: var(--text);
  background: transparent;
  text-transform: none;
  letter-spacing: 0;
}

.sheet td:first-child { position: relative; padding-right: 2.4rem; }
.sheet td:first-child code { white-space: pre-wrap; }

.copy-btn {
  position: absolute;
  top: .3rem; right: .3rem;
  display: inline-grid;
  place-items: center;
  width: 30px; height: 30px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  opacity: .55;
}
tr:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; border-color: var(--border); background: var(--bg); }
.copy-btn:hover { color: var(--accent-text); }

.note, .warn {
  margin: 0 0 1rem;
  padding: .7rem .9rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-soft);
  max-width: 80ch;
}
.warn { border-left-color: var(--warn-border); background: var(--warn-bg); }
.note p, .warn p { margin: 0; }

.tag {
  display: inline-block;
  margin-left: .35rem;
  padding: 0 .45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-muted);
  vertical-align: .1em;
  white-space: nowrap;
}

.notice {
  padding: 1rem;
  border: 1px solid var(--warn-border);
  background: var(--warn-bg);
  border-radius: var(--radius);
}

.no-results { color: var(--text-muted); font-style: italic; }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%; bottom: 1.5rem;
  transform: translateX(-50%);
  padding: .5rem 1rem;
  border-radius: var(--radius);
  background: var(--text);
  color: var(--bg);
  font-size: .9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
.toast.show { opacity: 1; }

/* ---------- Mobil ---------- */

@media (max-width: 860px) {
  .menu-btn { display: inline-grid; }
  .layout { grid-template-columns: minmax(0, 1fr); }

  .sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    z-index: 15;
    width: min(85vw, 320px);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform .2s, visibility .2s;
    box-shadow: 0 8px 24px rgb(0 0 0 / .2);
  }
  .sidebar.open { transform: none; visibility: visible; }

  .sheet table, .sheet tbody, .sheet tr, .sheet td { display: block; width: 100%; }
  .sheet thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .sheet tr { border-bottom: 1px solid var(--border); padding: .35rem 0; }
  .sheet th, .sheet td { border-bottom: 0; }
  .sheet th:first-child, .sheet td:first-child { width: 100%; }
  .sheet td { padding: .2rem .4rem; }
  .sheet td:first-child { padding-right: 2.4rem; }
  .sheet tr.sub th { display: block; padding: .8rem .4rem .2rem; }
  .copy-btn { opacity: 1; }
}

/* ---------- Bewegung & Druck ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}

@media (forced-colors: active) {
  .nav-group a[aria-current="page"] { outline: 2px solid CanvasText; }
  .copy-btn { opacity: 1; border-color: ButtonText; }
}

@media print {
  .topbar, .sidebar, .sheet-tools, .toc, .copy-btn, .skip-link, .toast { display: none !important; }
  .layout { display: block; }
  main { padding: 0; max-width: none; }
  .sheet tr { break-inside: avoid; }
  .sheet tbody tr:hover { background: none; }
  a { color: inherit; text-decoration: none; }
}

/* ---------- Impressum & Datenschutz ---------- */

.legal { margin-inline: auto; max-width: 80ch; }
.legal h2 {
  margin: 2.25rem 0 .75rem;
  padding-bottom: .4rem;
  font-size: 1.4rem;
  border-bottom: 1px solid var(--border);
}
.legal h3 { margin: 1.5rem 0 .4rem; font-size: 1.05rem; }
.legal a { color: var(--accent-text); }
.legal ul { padding-left: 1.4rem; }
.legal li + li { margin-top: .2rem; }
.legal-date { margin-top: 2rem; font-size: .85rem; color: var(--text-muted); }

.sidebar-legal {
  margin: 1.5rem .5rem 0;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
  font-size: .85rem;
}
.sidebar-legal a { color: var(--text-muted); }
.sidebar-legal a:hover { color: var(--accent-text); }