Oberleiste 2-Reihen-Block: Display|Kombi oben, Overrides|Masse unten

User-Wunsch: Overrides unter Wireframe, Kombi neben Wireframe, gleiche
Pill-Breiten + gleiche X-Achse, Boxen zusammenhaengend (kein Split
zwischen Select und Gear), dunkler wie Elemente.

Neue Komponente BarCombo:
- Icon roh links (18px fixe Breite → X-Alignment zwischen Reihen)
- iconClickable=true macht Icon zum Toggle-Button (fuer Overrides AN/AUS)
- Combined pill: ein gemeinsamer Container (bg-input — dunkler statt
  bg-item) mit select + optional gear in einem nahtlosen Rahmen
- Gear sitzt im selben Pill, kein border-left, transparent bg
- Caret-Position verschoben (right 30px) wenn gear vorhanden — Caret
  bleibt innerhalb des sichtbaren Select-Bereichs

Layout:
- CSS Grid 2x2 mit fester Pill-Breite (PRESET_W = 150)
- Reihe 1: Display | Kombi
- Reihe 2: Overrides | Masse
- Gleicher Spalten-Track in beiden Reihen → identische X-Positionen

Entfernt: BarSelect/BarButton im Display/Masse/Overrides/Kombi-Pfad,
alte Sektionen am Ende der Toolbar. BarButton bleibt fuer Camera + Zoom-
Buttons + Print/Edit. View-Toggle bleibt segmented-pill am Anfang.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/OberleisteApp.jsx

@@ -125,6 +125,83 @@ function BarSelect({ icon, value, onChange, title, disabled, width, children, jo
   )
 }
 
+// BarCombo: dunklerer (bg-input) Pill-Container der select + optional gear
+// als EINE nahtlose Box rendert. Icon roh links daneben (kein Container).
+// iconClickable=true macht das Icon zum Toggle-Button (Overrides etc.).
+function BarCombo({
+  icon, iconActive, iconClickable, onIconClick, iconTitle,
+  value, onChange, width, title, children, disabled,
+  onGear, gearTitle,
+}) {
+  return (
+    <div style={{
+      display: 'inline-flex', alignItems: 'center', gap: 5,
+      opacity: disabled ? 0.5 : 1, flexShrink: 0,
+    }}>
+      {/* Icon links — fixe Breite fuer X-Axis-Alignment zwischen Reihen */}
+      {iconClickable ? (
+        <button onClick={onIconClick} title={iconTitle}
+          style={{
+            width: 18, height: BAR_H,
+            background: 'transparent', border: 'none',
+            cursor: 'pointer', flexShrink: 0, padding: 0,
+            display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+          }}>
+          <Icon name={icon} size={13}
+                style={{ color: iconActive ? 'var(--accent)' : 'var(--text-muted)' }} />
+        </button>
+      ) : (
+        <span style={{
+          width: 18, height: BAR_H, flexShrink: 0,
+          display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+        }}>
+          <Icon name={icon} size={13} style={{ color: 'var(--text-muted)' }} />
+        </span>
+      )}
+      {/* Combined pill: select + optional gear, gemeinsamer bg + border */}
+      <div title={title} style={{
+        display: 'inline-flex', alignItems: 'stretch',
+        height: BAR_H, width,
+        background: 'var(--bg-input)',
+        border: '1px solid var(--border)',
+        borderRadius: 999,
+        overflow: 'hidden',
+      }}>
+        <select
+          value={value || ''}
+          disabled={disabled}
+          onChange={(e) => onChange(e.target.value)}
+          style={{
+            flex: 1, minWidth: 0,
+            background: 'transparent', color: 'var(--text-primary)',
+            border: 'none', outline: 'none',
+            padding: '0 22px 0 12px',
+            fontSize: 11, fontFamily: 'var(--font)',
+            appearance: 'none', WebkitAppearance: 'none',
+            backgroundImage: 'var(--select-arrow)',
+            backgroundRepeat: 'no-repeat',
+            backgroundPosition: onGear ? 'right 30px center' : 'right 9px center',
+            cursor: disabled ? 'not-allowed' : 'pointer',
+            letterSpacing: 0,
+          }}
+        >{children}</select>
+        {onGear && (
+          <button onClick={onGear} title={gearTitle}
+            style={{
+              background: 'transparent', border: 'none',
+              padding: '0 8px', cursor: 'pointer',
+              display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+              flexShrink: 0,
+            }}>
+            <Icon name="settings" size={12}
+                  style={{ color: 'var(--text-muted)' }} />
+          </button>
+        )}
+      </div>
+    </div>
+  )
+}
+
 // BarButton: pill-foermiger Icon-Button im selben Stil wie BarSelect.
 // joinedLeft = linke Kante flach (dockt rechts an einen BarSelect-joinedRight).
 function BarButton({ icon, onClick, title, disabled, active, joinedLeft }) {
@@ -132,7 +209,7 @@ function BarButton({ icon, onClick, title, disabled, active, joinedLeft }) {
     <button onClick={onClick} disabled={disabled} title={title}
       style={{
         height: BAR_H, width: BAR_H,
-        background: active ? 'var(--accent)' : 'var(--bg-item)',
+        background: active ? 'var(--accent)' : 'var(--bg-input)',
         border: '1px solid var(--border)',
         borderTopLeftRadius: joinedLeft ? 0 : 999,
         borderBottomLeftRadius: joinedLeft ? 0 : 999,
@@ -365,38 +442,118 @@ export default function OberleisteApp() {
 
       <div style={sep} />
 
-      {/* ====== DISPLAY-MODE ====== */}
-      <BarSelect
+      {/* ====== 2-Reihen Preset-Block ======
+          Oben: Display | Kombi
+          Unten: Overrides | Masse
+          Gleiche Pill-Breiten, identische X-Positionen (Grid-Layout). */}
+      {(() => {
+        const PRESET_W = 150
+        return (
+          <div style={{
+            display: 'grid', gridTemplateColumns: 'auto auto',
+            gap: '4px 6px', flexShrink: 0,
+          }}>
+            {/* Reihe 1, Spalte 1: Display */}
+            <BarCombo
               icon="lightbulb"
               value={state.displayMode || ''}
               onChange={(v) => setDisplayMode(v)}
               title="Display-Mode (Wireframe / Shaded / Rendered / etc.)"
-        width={160}
+              width={PRESET_W}
             >
               {!state.displayMode && <option value="">—</option>}
               {(state.displayModes || []).map(dm => (
                 <option key={dm.id} value={dm.name}>{dm.name}</option>
               ))}
-      </BarSelect>
-
-      <div style={sep} />
-
-      {/* ====== MASSE (Preset-Picker + Settings) ====== */}
-      <BarSelect
+            </BarCombo>
+            {/* Reihe 1, Spalte 2: Ebenenkombination */}
+            <BarCombo
+              icon="layers"
+              value={state.layerCombinationActive || '__none__'}
+              onChange={(v) => {
+                if (v === '__configure__') { openLayerCombinationsDialog(); return }
+                if (v === '__save__') {
+                  const suggested = state.layerCombinationActive
+                    || `Kombi ${(state.layerCombinations || []).length + 1}`
+                  const name = (window.prompt('Name für Ebenenkombination:', suggested) || '').trim()
+                  if (!name) return
+                  if ((state.layerCombinations || []).includes(name) &&
+                      !window.confirm(`"${name}" überschreiben?`)) return
+                  saveLayerCombination(name)
+                  return
+                }
+                if (v === '__delete__') {
+                  if (state.layerCombinationActive &&
+                      window.confirm(`Kombination "${state.layerCombinationActive}" löschen?`))
+                    deleteLayerCombination(state.layerCombinationActive)
+                  return
+                }
+                pickLayerCombination(v === '__none__' ? null : v)
+              }}
+              title={state.layerCombinationActive
+                ? `Aktive Kombi: ${state.layerCombinationActive}`
+                : 'Keine Kombination — manuelle Sichtbarkeit'}
+              width={PRESET_W}
+              onGear={openLayerCombinationsDialog}
+              gearTitle="Ebenenkombinationen bearbeiten"
+            >
+              <option value="__none__">— Eigene —</option>
+              {(state.layerCombinations || []).map(name => (
+                <option key={name} value={name}>{name}</option>
+              ))}
+              <option disabled>──────────</option>
+              <option value="__save__">+ Aktuelle speichern…</option>
+              {state.layerCombinationActive && (
+                <option value="__delete__">🗑 Aktuelle löschen</option>
+              )}
+              <option value="__configure__">Bearbeiten…</option>
+            </BarCombo>
+            {/* Reihe 2, Spalte 1: Overrides (Toggle als Icon links) */}
+            <BarCombo
+              icon="auto_fix_high"
+              iconClickable
+              iconActive={state.overridesEnabled}
+              onIconClick={() => toggleOverrides(!state.overridesEnabled)}
+              iconTitle={state.overridesEnabled
+                ? 'Grafische Overrides aktiv — klick zum Ausschalten'
+                : 'Grafische Overrides ausgeschaltet'}
+              value={state.overridesActivePreset || '__none__'}
+              onChange={(v) => {
+                if (v === '__configure__') { openOverridesPanel(); return }
+                setOverridesPreset(v === '__none__' ? null : v)
+              }}
+              title={state.overridesActivePreset
+                ? `Aktives Preset: ${state.overridesActivePreset} (${state.overridesCount} Regeln)`
+                : `Kein Preset aktiv (${state.overridesCount} Regeln, frei editiert)`}
+              width={PRESET_W}
+              onGear={openOverridesPanel}
+              gearTitle="Overrides-Regel-Editor öffnen"
+            >
+              <option value="__none__">{state.overridesCount > 0 ? `— (${state.overridesCount} Regeln)` : '—'}</option>
+              {(state.overridesPresets || []).map(name => (
+                <option key={name} value={name}>{name}</option>
+              ))}
+              <option disabled>──────────</option>
+              <option value="__configure__">Konfigurieren…</option>
+            </BarCombo>
+            {/* Reihe 2, Spalte 2: Masse */}
+            <BarCombo
               icon="straighten"
               value={state.masseActiveId || ''}
               onChange={(v) => setMasseActive(v)}
               title="Aktives Mass — Raum-Rundung + Mass-Linien-Format"
-        width={140}
-        joinedRight
+              width={PRESET_W}
+              onGear={openMasseSettings}
+              gearTitle="Masse bearbeiten / neues anlegen"
             >
               {(state.massePresets || []).length === 0 && <option value="">—</option>}
               {(state.massePresets || []).map(p => (
                 <option key={p.id} value={p.id}>{p.name}</option>
               ))}
-      </BarSelect>
-      <BarButton icon="settings" onClick={() => openMasseSettings()}
-                  title="Masse bearbeiten / neues anlegen" joinedLeft />
+            </BarCombo>
+          </div>
+        )
+      })()}
 
       <div style={sep} />
 
@@ -473,92 +630,9 @@ export default function OberleisteApp() {
           : 'Strichstärken anzeigen (Print-View)'}
       />
 
-      <div style={sep} />
-
       {/* Snap-Toggles (Ortho/Grid/OSnap) sind in Rhinos eigener Footer-Bar
           schon vorhanden — hier rausgenommen um Doppelung zu vermeiden. */}
 
-      {/* ====== STACK: Overrides + Kombi uebereinander ======
-          Beide Zeilen haben identisches Spalten-Layout (Label-Spalte fix,
-          Dropdown gleich breit), damit Dropdowns vertikal aligned sind.   */}
-      {/* ====== OVERRIDES ====== */}
-      <BarButton
-        icon="auto_fix_high"
-        active={state.overridesEnabled}
-        onClick={() => toggleOverrides(!state.overridesEnabled)}
-        title={state.overridesEnabled
-          ? 'Grafische Overrides aktiv — klick zum Ausschalten'
-          : 'Grafische Overrides ausgeschaltet'}
-      />
-      <BarSelect
-        icon="palette"
-        value={state.overridesActivePreset || '__none__'}
-        onChange={(v) => {
-          if (v === '__configure__') { openOverridesPanel(); return }
-          setOverridesPreset(v === '__none__' ? null : v)
-        }}
-        title={state.overridesActivePreset
-          ? `Aktives Preset: ${state.overridesActivePreset} (${state.overridesCount} Regeln)`
-          : `Kein Preset aktiv (${state.overridesCount} Regeln, frei editiert)`}
-        width={140}
-        joinedRight
-      >
-        <option value="__none__">{state.overridesCount > 0 ? `— (${state.overridesCount} Regeln)` : '—'}</option>
-        {(state.overridesPresets || []).map(name => (
-          <option key={name} value={name}>{name}</option>
-        ))}
-        <option disabled>──────────</option>
-        <option value="__configure__">Konfigurieren…</option>
-      </BarSelect>
-      <BarButton icon="settings" onClick={openOverridesPanel}
-                  title="Overrides-Regel-Editor öffnen" joinedLeft />
-
-      <div style={sep} />
-
-      {/* ====== EBENEN-KOMBINATIONEN ====== */}
-      <BarSelect
-        icon="layers"
-        value={state.layerCombinationActive || '__none__'}
-        onChange={(v) => {
-          if (v === '__configure__') { openLayerCombinationsDialog(); return }
-          if (v === '__save__') {
-            const suggested = state.layerCombinationActive
-              || `Kombi ${(state.layerCombinations || []).length + 1}`
-            const name = (window.prompt('Name für Ebenenkombination:', suggested) || '').trim()
-            if (!name) return
-            if ((state.layerCombinations || []).includes(name) &&
-                !window.confirm(`"${name}" überschreiben?`)) return
-            saveLayerCombination(name)
-            return
-          }
-          if (v === '__delete__') {
-            if (state.layerCombinationActive &&
-                window.confirm(`Kombination "${state.layerCombinationActive}" löschen?`))
-              deleteLayerCombination(state.layerCombinationActive)
-            return
-          }
-          pickLayerCombination(v === '__none__' ? null : v)
-        }}
-        title={state.layerCombinationActive
-          ? `Aktive Kombi: ${state.layerCombinationActive}`
-          : 'Keine Kombination — manuelle Sichtbarkeit'}
-        width={150}
-        joinedRight
-      >
-        <option value="__none__">— Eigene —</option>
-        {(state.layerCombinations || []).map(name => (
-          <option key={name} value={name}>{name}</option>
-        ))}
-        <option disabled>──────────</option>
-        <option value="__save__">+ Aktuelle speichern…</option>
-        {state.layerCombinationActive && (
-          <option value="__delete__">🗑 Aktuelle löschen</option>
-        )}
-        <option value="__configure__">Bearbeiten…</option>
-      </BarSelect>
-      <BarButton icon="edit" onClick={openLayerCombinationsDialog}
-                  title="Ebenenkombinationen bearbeiten" joinedLeft />
-
       {/* Spacer am rechten Rand */}
       <div style={{ flex: 1 }} />
     </div>