:root {
  --bg: #f6f6f3;
  --surface: #ffffff;
  --ink: #1d1d1b;
  --ink-soft: #5c5c57;
  --line: #deded8;
  --accent: #1f5f8b;
  --pass: #2f7d4f;
  --fail: #b23a2c;
  --radius: 6px;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* { box-sizing: border-box; }
body { margin: 0; height: 100vh; display: grid; grid-template-rows: auto 1fr; }
h1, h2, h3 { line-height: 1.25; margin: 0; }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.92em; background: #efefe9; padding: 0 0.25em; border-radius: 3px; }

.bar {
  display: flex; align-items: center; gap: 24px;
  padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--line);
}
.bar__title { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.bar__module { font-weight: 600; color: var(--accent); }
.bar__title h1 { font-size: 16px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar__learner { margin-left: auto; color: var(--ink-soft); white-space: nowrap; }

.tasks { display: flex; gap: 4px; }
.tasks button {
  border: 1px solid transparent; background: none; padding: 6px 12px; border-radius: var(--radius);
  font: inherit; color: var(--ink-soft); cursor: pointer;
}
.tasks button[aria-current="page"] { border-color: var(--line); background: var(--bg); color: var(--ink); font-weight: 600; }

.layout { display: grid; grid-template-columns: minmax(320px, 420px) 1fr; min-height: 0; }
.side {
  display: flex; flex-direction: column; gap: 16px; padding: 20px;
  overflow-y: auto; border-right: 1px solid var(--line); background: var(--surface);
}
.editor { min-height: 0; }
#playground { width: 100%; height: 100%; border: 0; }

.auftrag h2 { font-size: 18px; margin-bottom: 8px; }
.auftrag h3 { font-size: 15px; margin: 16px 0 4px; }
.auftrag p, .auftrag ul, .auftrag ol { margin: 6px 0; }
.auftrag table { border-collapse: collapse; margin: 8px 0; }
.auftrag th, .auftrag td { text-align: left; padding: 4px 12px 4px 0; border-bottom: 1px solid var(--line); }
.hint { color: var(--ink-soft); font-size: 14px; }

.results { border-top: 1px solid var(--line); padding-top: 12px; }
.results__head { display: flex; justify-content: space-between; align-items: center; }
.results__head h2 { font-size: 15px; }
.badge { font-size: 13px; color: var(--ink-soft); }
.badge--pass { color: var(--pass); font-weight: 600; }
.badge--fail { color: var(--fail); font-weight: 600; }
.results__list { list-style: none; margin: 8px 0 0; padding: 0; font-size: 14px; }
.results__list li { padding: 4px 0 4px 22px; position: relative; }
.results__list li::before { position: absolute; left: 0; font-weight: 700; }
.results__list li.pass::before { content: "✓"; color: var(--pass); }
.results__list li.fail::before { content: "✗"; color: var(--fail); }
.results__list li.skip::before { content: "–"; color: var(--ink-soft); }
.results__list pre { margin: 4px 0 0; white-space: pre-wrap; font-size: 12px; color: var(--fail); }

.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
button { font: inherit; cursor: pointer; }
.actions button:not(.link), dialog button {
  padding: 8px 14px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
/* Spezifität höher als .actions button:not(.link) (0,2,1), sonst weisse Schrift auf Weiss */
.actions button.primary:not(.link), dialog button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.actions button:disabled { opacity: 0.5; cursor: not-allowed; }

.fatal {
  margin: 24px; padding: 16px 20px; border: 1px solid var(--fail); border-radius: var(--radius);
  background: var(--surface); color: var(--ink); max-width: 640px;
}
.fatal strong { color: var(--fail); }
.fatal p { margin: 8px 0 0; }
body.embedded-error { display: block; height: auto; padding: 24px; background: var(--surface); color: var(--fail); }
button.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; }
.status { min-height: 1.5em; margin: 0; font-size: 14px; }
.status[data-kind="ok"] { color: var(--pass); }
.status[data-kind="error"] { color: var(--fail); }

dialog { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; width: min(360px, 90vw); }
dialog form { display: grid; gap: 8px; }
dialog input { font: inherit; padding: 8px; border: 1px solid var(--line); border-radius: var(--radius); }

@media (max-width: 900px) {
  body { height: auto; }
  .bar { flex-wrap: wrap; }
  .layout { grid-template-columns: 1fr; }
  .editor { height: 80vh; }
}