:root {
  --paper: #faf7f0; --paper-raised: #f1ede2; --ink: #1f1c17; --ink-muted: #5a5447;
  --rule: #d8d0bf; --accent: #2d4a7c; --warning: #8f4a00;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #201e1b; --paper-raised: #2a2824; --ink: #ebe6da; --ink-muted: #b1aa9a;
    --rule: #3e3a33; --accent: #9fb7e3; --warning: #f0b36b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--paper); color: var(--ink);
  font: 1.0625rem/1.65 Georgia, 'Iowan Old Style', 'Times New Roman', serif;
}
main { flex: 1; width: 100%; max-width: 70ch; margin: 0 auto; padding: 40px 16px; }
h1 { font-size: 1.75rem; line-height: 1.25; }
h2 { font-size: 1.35rem; line-height: 1.3; }
a { color: var(--accent); text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lead { color: var(--ink-muted); }
.hinweis { color: var(--warning); }
footer {
  display: flex; gap: 16px; padding: 16px; border-top: 1px solid var(--rule);
  background: var(--paper-raised); font: 0.9375rem system-ui, -apple-system, 'Segoe UI', sans-serif;
}
footer a { color: var(--ink-muted); display: inline-block; min-height: 44px; line-height: 44px; }

/* Editor-Oberfläche */
.nur-leser { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
body.app { height: 100vh; height: 100dvh; min-height: 0; }
.app-rahmen { display: contents; }
.flaeche { flex: 1; min-height: 0; display: flex; order: 1; }
.pane { flex: 1; min-width: 0; min-height: 0; display: flex; flex-direction: column; padding: 16px; overflow: auto; }
.pane-vorschau { border-left: 1px solid var(--rule); }
#editor {
  flex: 1; min-height: 0; width: 100%; resize: none; border: 0; padding: 0; margin: 0;
  background: transparent; color: var(--ink); tab-size: 4;
  font: 1rem/1.6 ui-monospace, 'SF Mono', Consolas, 'Liberation Mono', monospace;
}
#editor:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.leer { padding-bottom: 16px; font-family: system-ui, -apple-system, 'Segoe UI', sans-serif; }
.leer[hidden] { display: none; }
.klein { color: var(--ink-muted); font: 0.9375rem system-ui, -apple-system, 'Segoe UI', sans-serif; }
.leiste {
  display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap;
  min-height: 56px; padding: 4px 16px; background: var(--paper-raised);
  font: 500 0.9375rem system-ui, -apple-system, 'Segoe UI', sans-serif;
}
.datei { display: flex; align-items: baseline; gap: 8px 16px; flex-wrap: wrap; min-width: 0; color: var(--ink-muted); }
.dateiname { overflow-wrap: anywhere; }
.status.ungespeichert { color: var(--warning); }
.aktionen { display: flex; align-items: center; gap: 8px; }
.knopf, .umschalter button {
  min-height: 44px; min-width: 44px; padding: 0 16px; border-radius: 8px; cursor: pointer;
  font: 500 0.9375rem system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: transparent; color: var(--ink); border: 1px solid var(--rule);
}
.knopf-haupt { background: var(--accent); color: var(--paper); border-color: var(--accent); }
.knopf:focus-visible, .umschalter button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.umschalter { display: flex; }
.umschalter button { border-radius: 0; margin-left: -1px; }
.umschalter button:first-child { border-radius: 8px 0 0 8px; margin-left: 0; }
.umschalter button:last-child { border-radius: 0 8px 8px 0; }
.umschalter button[aria-pressed="true"] { background: var(--accent); color: var(--paper); border-color: var(--accent); position: relative; }
.nur-breit { display: none; }

/* schmal: Leiste unten, immer nur eine Ansicht */
.app-rahmen .leiste { order: 3; border-top: 1px solid var(--rule); padding-bottom: calc(4px + env(safe-area-inset-bottom)); }
.app-rahmen[data-ansicht="vorschau"] .pane-editor,
.app-rahmen[data-ansicht="editor"] .pane-vorschau { display: none; }
.app-rahmen[data-ansicht="vorschau"] .pane-vorschau { border-left: 0; }
body.app footer { order: 2; padding: 0 16px; }
#ansicht-vorschau { border-radius: 0 8px 8px 0; }

@media (min-width: 900px) {
  .pane { padding: 24px; }
  .leiste { min-height: 48px; }
  .app-rahmen .leiste { order: 0; border-top: 0; border-bottom: 1px solid var(--rule); padding-bottom: 4px; }
  .nur-breit { display: block; }
  #ansicht-vorschau { border-radius: 0; }
  .app-rahmen[data-ansicht="editor"] .pane-vorschau { display: none; }
  .app-rahmen[data-ansicht="editor"] .pane-editor,
  .app-rahmen[data-ansicht="vorschau"] .pane-vorschau { display: flex; }
}
/* Warndialog */
.dialog { max-width: min(28rem, calc(100vw - 32px)); padding: 24px; border: 1px solid var(--rule); border-radius: 8px; background: var(--paper-raised); color: var(--ink); font: 1rem/1.5 system-ui, -apple-system, 'Segoe UI', sans-serif; }
.dialog::backdrop { background: rgba(0, 0, 0, 0.5); }
.dialog p { margin: 0 0 24px; }
.dialog-aktionen { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Markdown-Vorschau */
.markdown { max-width: 70ch; overflow-wrap: anywhere; }
.markdown > :first-child { margin-top: 0; }
.markdown img { max-width: 100%; height: auto; }
.markdown blockquote { margin: 1em 0; padding-left: 1em; border-left: 3px solid var(--rule); color: var(--ink-muted); }
.markdown code { font: 0.9em ui-monospace, 'SF Mono', Consolas, 'Liberation Mono', monospace; background: var(--paper-raised); padding: 0.1em 0.3em; border-radius: 4px; }
.markdown pre { background: var(--paper-raised); padding: 12px 16px; border-radius: 8px; overflow-x: auto; }
.markdown pre code { background: none; padding: 0; }
.markdown table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; }
.markdown th, .markdown td { border: 1px solid var(--rule); padding: 6px 12px; text-align: left; }
.markdown th { background: var(--paper-raised); }
.markdown ul:has(input[type="checkbox"]) { list-style: none; padding-left: 0.5em; }
.markdown input[type="checkbox"] { margin-right: 0.5em; }
.markdown hr { border: 0; border-top: 1px solid var(--rule); }