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src/components/category/CategoryNameDialog.jsx

@@ -113,8 +113,9 @@ class CategoryNameDialog extends Component {
     const { open, mode = 'create' } = this.props;
     const { mode: formMode, name, bulkText, busy, error } = this.state;
     const isBulk = formMode === BULK_MODE;
-    const canBulk = mode === 'create';
-    const canSubmitSingle = name.trim() !== '';
+    const canSubmitSingle =
+      name.trim() !== '' &&
+      (mode !== 'edit' || name.trim() !== (this.props.initialName ?? '').trim());
     const bulkNames = parseBulkNames(bulkText);
     const canSubmitBulk = bulkNames.length > 0;
 
@@ -157,7 +158,13 @@ class CategoryNameDialog extends Component {
               <Button
                 type="submit"
                 variant="contained"
+                color={canSubmitSingle ? 'success' : 'inherit'}
                 disabled={busy || !canSubmitSingle}
+                sx={
+                  canSubmitSingle
+                    ? { bgcolor: 'success.main', color: '#fff', '&:hover': { bgcolor: 'success.dark' } }
+                    : undefined
+                }
               >
                 {SUBMIT_LABELS[mode]}
               </Button>

src/components/category/CategoryTree.jsx

@@ -749,13 +749,27 @@ export default class CategoryTree extends PureComponent {
             >
               Abbrechen
             </Button>
-            <Button
-              onClick={this.handleConfirmRename}
-              variant="contained"
-              disabled={!renameValue.trim() || isSubmitting}
-            >
-              Speichern
-            </Button>
+            {(() => {
+              const canSave =
+                Boolean(renameValue.trim()) &&
+                !isSubmitting &&
+                renameValue.trim() !== (renameTarget?.name ?? '').trim();
+              return (
+                <Button
+                  onClick={this.handleConfirmRename}
+                  variant="contained"
+                  color={canSave ? 'success' : 'inherit'}
+                  disabled={!canSave}
+                  sx={
+                    canSave
+                      ? { bgcolor: 'success.main', color: '#fff', '&:hover': { bgcolor: 'success.dark' } }
+                      : undefined
+                  }
+                >
+                  Speichern
+                </Button>
+              );
+            })()}
           </DialogActions>
         </AppDialog>
 

src/components/manifest/ManifestHeader.jsx

@@ -272,6 +272,11 @@ class ManifestHeader extends PureComponent {
     } = this.props;
 
     const hasArticles = this.hasArticles();
+    const isEdit = docId != null;
+    const hasAttachments = Array.isArray(attachments) && attachments.length > 0;
+    const canSave = isEdit
+      ? Boolean(isDirty)
+      : Boolean(hasArticles || hasAttachments);
 
     // Delivery: number is server-allocated/read-only; the caller reference
     // lives in the editable externalNumber field.
@@ -447,20 +452,33 @@ class ManifestHeader extends PureComponent {
           <Stack spacing={1.5} sx={{ pt: 0.5 }}>
             <Button
               variant="contained"
-              color={isDirty ? 'warning' : 'primary'}
-              disabled={saving || orderCreating}
+              color={canSave ? 'success' : 'inherit'}
+              disabled={Boolean(saving || orderCreating || !canSave)}
               onClick={onSave}
               sx={{
                 height: 40,
                 fontWeight: 700,
                 fontSize: '0.875rem',
                 whiteSpace: 'nowrap',
-                ...(isDirty && {
-                  boxShadow: (theme) => `0 0 0 2px ${theme.palette.warning.main}`,
+                ...(canSave && {
+                  bgcolor: 'success.main',
+                  color: '#fff',
+                  '&:hover': {
+                    bgcolor: 'success.dark',
+                  },
+                }),
+                ...(!canSave && {
+                  bgcolor: 'action.disabledBackground',
+                  color: 'text.disabled',
+                  boxShadow: 'none',
+                  '&.Mui-disabled': {
+                    bgcolor: 'action.disabledBackground',
+                    color: 'text.disabled',
+                  },
                 }),
               }}
             >
-              {saving ? 'Speichern…' : isDirty ? 'Speichern *' : 'Speichern'}
+              {saving ? 'Speichern…' : 'Speichern'}
             </Button>
             {isDirty && onRestore && (
               <Button

src/components/manifest/TextEditorPanel.jsx

@@ -362,9 +362,15 @@ export class TextEditorPanel extends PureComponent {
                 <Button
                   size="small"
                   variant="contained"
+                  color={isDirty ? 'success' : 'inherit'}
                   startIcon={<SaveOutlinedIcon />}
                   onClick={this.handleSave}
                   disabled={loading || !isDirty}
+                  sx={
+                    isDirty
+                      ? { bgcolor: 'success.main', color: '#fff', '&:hover': { bgcolor: 'success.dark' } }
+                      : undefined
+                  }
                 >
                   Speichern
                 </Button>

src/components/settings/CompanySettingsPanel.jsx

@@ -52,11 +52,17 @@ export default class CompanySettingsPanel extends Component {
 
   syncFormFromCompany(companyRow) {
     if (!companyRow) return;
-    this.setState({
+    this._initial = {
       name: companyRow.name ?? '',
       iso639: companyRow.iso639 ?? 'de',
       taxrate: companyRow.taxrate != null ? String(companyRow.taxrate) : '',
       reducedtaxrate: companyRow.reducedtaxrate != null ? String(companyRow.reducedtaxrate) : '',
+    };
+    this.setState({
+      name: this._initial.name,
+      iso639: this._initial.iso639,
+      taxrate: this._initial.taxrate,
+      reducedtaxrate: this._initial.reducedtaxrate,
       status: 'ready',
     });
   }
@@ -100,6 +106,12 @@ export default class CompanySettingsPanel extends Component {
         taxrate: parsedTaxrate,
         reducedtaxrate: parsedReducedtaxrate,
       });
+      this._initial = {
+        name: name.trim(),
+        iso639,
+        taxrate: String(parsedTaxrate),
+        reducedtaxrate: String(parsedReducedtaxrate),
+      };
       enqueueSnackbar('Unternehmen gespeichert.', { variant: 'success' });
     } catch (err) {
       this.setState({ error: backendErrorFrom(err) });
@@ -125,7 +137,14 @@ export default class CompanySettingsPanel extends Component {
 
     const parsedTaxrate = parseTaxRate(taxrate);
     const parsedReducedtaxrate = parseTaxRate(reducedtaxrate);
+    const isDirty =
+      Boolean(this._initial) &&
+      (name.trim() !== this._initial.name.trim() ||
+        iso639 !== this._initial.iso639 ||
+        taxrate.trim() !== this._initial.taxrate.trim() ||
+        reducedtaxrate.trim() !== this._initial.reducedtaxrate.trim());
     const canSave =
+      isDirty &&
       name.trim() !== '' &&
       ISO639_OPTIONS.includes(iso639) &&
       parsedTaxrate != null &&
@@ -218,8 +237,14 @@ export default class CompanySettingsPanel extends Component {
             <Button
               type="submit"
               variant="contained"
+              color={canSave ? 'success' : 'inherit'}
               disabled={busy || !canSave}
               startIcon={busy ? <CircularProgress size={16} color="inherit" /> : null}
+              sx={
+                canSave
+                  ? { bgcolor: 'success.main', color: '#fff', '&:hover': { bgcolor: 'success.dark' } }
+                  : undefined
+              }
             >
               Speichern
             </Button>

src/components/vfs/VfsTextEditor.jsx

@@ -292,7 +292,7 @@ export default class VfsTextEditor extends PureComponent {
             <Button
               size="small"
               variant="contained"
-              color={isDirty ? 'primary' : 'inherit'}
+              color={isDirty ? 'success' : 'inherit'}
               startIcon={isSaving ? <CircularProgress size={14} color="inherit" /> : <SaveRoundedIcon />}
               onClick={onSave}
               disabled={!isDirty || isSaving}
@@ -302,6 +302,11 @@ export default class VfsTextEditor extends PureComponent {
                 py: 0.4,
                 fontSize: '0.78rem',
                 fontWeight: 600,
+                ...(isDirty && {
+                  bgcolor: 'success.main',
+                  color: '#fff',
+                  '&:hover': { bgcolor: 'success.dark' },
+                }),
               }}
             >
               {isSaving ? 'Speichern…' : 'Speichern (Strg+S)'}