:root {
  --bg: #0b0e14;
  --panel: #131824;
  --border: #232a3a;
  --text: #dfe6f0;
  --muted: #8a93a6;
  --accent: #4f8cff;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f5f6f8; --panel: #ffffff; --border: #e1e4ea; --text: #1a1d24; --muted: #6b7280; }
}

* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: var(--bg); color: var(--text); }

header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); }
header h1 { font-size: 1.1rem; margin: 0; }
.module-tag { color: var(--muted); font-weight: normal; font-size: 0.9rem; }

main { max-width: 900px; margin: 0 auto; padding: 1.5rem; }
.hidden { display: none; }

#intro-screen input { width: 100%; padding: 0.6rem; margin: 0.75rem 0; border-radius: 6px; border: 1px solid var(--border); background: var(--panel); color: var(--text); }

#chat-screen { display: flex; gap: 1.5rem; max-width: 1100px; }
#chat-column { flex: 1; display: flex; flex-direction: column; }
#messages { flex: 1; min-height: 320px; max-height: 55vh; overflow-y: auto; border: 1px solid var(--border); border-radius: 8px; padding: 1rem; background: var(--panel); }
.msg { padding: 0.5rem 0.75rem; margin-bottom: 0.5rem; border-radius: 8px; max-width: 80%; }
.msg-assistant { background: var(--border); }
.msg-user { background: var(--accent); color: white; margin-left: auto; }

#turn-form { display: flex; gap: 0.5rem; margin-top: 0.75rem; }
#turn-input { flex: 1; padding: 0.6rem; border-radius: 6px; border: 1px solid var(--border); background: var(--panel); color: var(--text); }

button { padding: 0.6rem 1rem; border-radius: 6px; border: none; background: var(--accent); color: white; cursor: pointer; }
button.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
#complete-btn { margin-top: 0.75rem; align-self: flex-start; background: transparent; border: 1px solid var(--border); color: var(--text); }

#nugget-sidebar { width: 280px; }
#nugget-list { list-style: none; padding: 0; }
.nugget { padding: 0.4rem 0.6rem; margin-bottom: 0.4rem; border-radius: 6px; font-size: 0.85rem; background: var(--panel); border: 1px solid var(--border); }
.nugget-prozess { border-left: 3px solid #4f8cff; }
.nugget-risiko { border-left: 3px solid #e0554f; }
.nugget-rollen { border-left: 3px solid #43b581; }

#step-list li { margin-bottom: 0.5rem; }
.review-actions { display: flex; gap: 0.75rem; margin-top: 1rem; }