* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  display: flex; flex-direction: column;
  font: 12px "Segoe UI", system-ui, sans-serif;
  color: #222; background: #e9ecef;
}
button, select, input { font: inherit; }

/* Multifunktionsleiste */
.ribbon {
  display: flex; gap: 2px; padding: 4px 4px 0;
  background: #f5f6f7; border-bottom: 1px solid #b9bec4;
}
.group {
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 2px 6px 0; border-right: 1px solid #d3d7db;
}
.group.context { background: #e3f0d6; }
.group > label {
  text-align: center; color: #555; font-size: 11px;
  padding: 2px 0; border-top: 1px solid #d3d7db; margin-top: 2px;
}
.buttons { display: flex; gap: 2px; align-items: center; }
.buttons button {
  display: flex; flex-direction: column; align-items: center;
  min-width: 58px; padding: 3px 4px; font-size: 20px; line-height: 1.1;
  background: none; border: 1px solid transparent; border-radius: 2px; cursor: pointer;
}
.buttons button span { font-size: 11px; margin-top: 2px; }
.buttons button:hover { background: #dbe9f6; border-color: #a9c9e8; }
.buttons button.active { background: #c5dcf2; border-color: #7fb0dc; }
.buttons button.ok { color: #2a8a2a; }
.buttons button.cancel { color: #c22; }
#scale { height: 26px; }

main { flex: 1; display: flex; min-height: 0; }

/* Paletten links */
aside {
  width: 260px; display: flex; flex-direction: column; gap: 4px; padding: 4px;
  background: #e9ecef; border-right: 1px solid #b9bec4; overflow-y: auto;
}
.palette { background: #fff; border: 1px solid #b9bec4; }
.palette h2 {
  margin: 0; padding: 4px 6px; font-size: 12px; font-weight: 600;
  background: #dfe3e8; border-bottom: 1px solid #b9bec4;
}
#props table { width: 100%; border-collapse: collapse; }
#props td { padding: 2px 4px; border-bottom: 1px solid #eee; }
#props td:first-child { width: 45%; color: #444; }
#props th { text-align: left; padding: 3px 4px; background: #f0f2f4; font-weight: 600; }
#props input { width: 100%; padding: 1px 3px; border: 1px solid #ccc; }
#props input.error { border-color: #c22; background: #fdeaea; }
#props .actions { padding: 6px 4px; display: flex; gap: 4px; flex-wrap: wrap; }
#props .empty { padding: 6px; color: #777; }

#browser { list-style: none; margin: 0; padding: 4px 0; }
#browser li { padding: 2px 6px 2px 22px; cursor: pointer; }
#browser li.head { padding-left: 8px; font-weight: 600; cursor: default; }
#browser li[data-view]:hover { background: #dbe9f6; }
#browser li.active { background: #c5dcf2; font-weight: 600; }

/* Zeichenfläche */
#view { flex: 1; position: relative; background: #fff; overflow: hidden; }
#view canvas { display: block; }
#view-title {
  position: absolute; left: 8px; top: 6px; pointer-events: none;
  color: #555; font-weight: 600;
}
#zoom-fit { position: absolute; right: 8px; bottom: 8px; }
#typed {
  position: absolute; pointer-events: none; padding: 1px 4px;
  background: #fff; border: 1px solid #c0c; color: #c0c;
}

#status {
  padding: 3px 8px; background: #f5f6f7; border-top: 1px solid #b9bec4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
#status.error { background: #fdeaea; color: #a00; }

dialog { border: 1px solid #888; padding: 12px; min-width: 460px; }
dialog h3 { margin: 0 0 8px; font-size: 13px; }
dialog table { width: 100%; border-collapse: collapse; }
dialog th { text-align: left; background: #f0f2f4; padding: 3px 4px; }
dialog td { padding: 2px 4px; }
dialog input { width: 100%; }
dialog td.result { width: 80px; text-align: right; color: #555; }
dialog td.result.error { color: #c22; }
.hint { color: #666; }
.dialog-buttons { display: flex; justify-content: space-between; }