body { background:#f6f8fb; }
.sidebar { background:#0f172a; color:#e2e8f0; min-height:100vh; padding:16px; }
.sidebar a { color:#e2e8f0; text-decoration:none; display:block; padding:6px 10px; border-radius:8px; }
.sidebar a:hover { background:#1e293b; }
.mail-item { background:#fff; border:1px solid #e5e7eb; border-radius:12px; padding:10px 14px; margin-bottom:8px; }
.mail-item.unseen { border-color:#3b82f6; background:#eef6ff; font-weight:600; }
.toolbar a, .toolbar button { margin-right:8px; }
.quill { background:#fff; }
/* Fix: Quill-Editor sichtbar machen */
#editor {
  min-height: 200px;
  border: 1px solid #ced4da;
  border-radius: 0.375rem;
  background: #fff;
  padding: 10px;
}