fix: default preview colors (#7277) [Backport to release/4.7] (#7278)

Co-authored-by: Theodór Tómas <theodortomas@gmail.com>

apps/web/i18n.lock

@@ -2036,12 +2036,12 @@ checksums:
     environments/workspace/look/advanced_styling_field_headline_size_description: 13debc3855e4edae992c7a1ebff599c3
     environments/workspace/look/advanced_styling_field_headline_weight: 0c8b8262945c61f8e2978502362e0a42
     environments/workspace/look/advanced_styling_field_headline_weight_description: 1a9c40bd76ff5098b1e48b1d3893171b
-    environments/workspace/look/advanced_styling_field_height: f4da6d7ecd26e3fa75cfea03abb60c00
+    environments/workspace/look/advanced_styling_field_height: 40ca2224bb2936ad1329091b35a9ffe2
     environments/workspace/look/advanced_styling_field_indicator_bg: 00febda2901af0f1b0c17e44f9917c38
     environments/workspace/look/advanced_styling_field_indicator_bg_description: 7eb3b54a8b331354ec95c0dc1545c620
     environments/workspace/look/advanced_styling_field_input_border_radius_description: 0007f1bb572b35d9a3720daeb7a55617
     environments/workspace/look/advanced_styling_field_input_font_size_description: 5311f95dcbd083623e35c98ea5374c3b
-    environments/workspace/look/advanced_styling_field_input_height_description: b704fc67e805223992c811d6f86a9c00
+    environments/workspace/look/advanced_styling_field_input_height_description: e19ec0dc432478def0fd1199ad765e38
     environments/workspace/look/advanced_styling_field_input_padding_x_description: 10e14296468321c13fda77fd1ba58dfd
     environments/workspace/look/advanced_styling_field_input_padding_y_description: 98b4aeff2940516d05ea61bdc1211d0d
     environments/workspace/look/advanced_styling_field_input_placeholder_opacity_description: f55a6700884d24014404e58876121ddf
@@ -2104,6 +2104,7 @@ checksums:
     environments/workspace/look/show_powered_by_formbricks: a0e96edadec8ef326423feccc9d06be7
     environments/workspace/look/styling_updated_successfully: b8b74b50dde95abcd498633e9d0c891f
     environments/workspace/look/suggest_colors: ddc4543b416ab774007b10a3434343cd
+    environments/workspace/look/suggested_colors_applied_please_save: 226fa70af5efc8ffa0a3755909c8163e
     environments/workspace/look/theme: 21fe00b7a518089576fb83c08631107a
     environments/workspace/look/theme_settings_description: 9fc45322818c3774ab4a44ea14d7836e
     environments/workspace/tags/add: 87c4a663507f2bcbbf79934af8164e13

apps/web/lib/styling/constants.ts

@@ -118,10 +118,10 @@ export const STYLE_DEFAULTS: TProjectStyling = {
   // Inputs
   inputTextColor: { light: _colors["inputTextColor.light"] },
   inputBorderRadius: 8,
-  inputHeight: 40,
+  inputHeight: 20,
   inputFontSize: 14,
-  inputPaddingX: 16,
+  inputPaddingX: 8,
-  inputPaddingY: 16,
+  inputPaddingY: 8,
   inputPlaceholderOpacity: 0.5,
   inputShadow: "0 1px 2px 0 rgb(0 0 0 / 0.05)",
 
@@ -149,6 +149,42 @@ export const STYLE_DEFAULTS: TProjectStyling = {
   progressIndicatorBgColor: { light: _colors["progressIndicatorBgColor.light"] },
 };
 
+/**
+ * Fills in new v4.7 color fields from legacy v4.6 fields when they are missing.
+ *
+ * v4.6 stored: brandColor, questionColor, inputColor, inputBorderColor.
+ * v4.7 adds: elementHeadlineColor, buttonBgColor, optionBgColor, etc.
+ *
+ * When loading v4.6 data the new fields are absent. Without this helper the
+ * form would fall back to STYLE_DEFAULTS (derived from the *default* brand
+ * colour), causing a visible mismatch.  This function derives the new fields
+ * from the actually-saved legacy fields so the preview and form stay coherent.
+ *
+ * Only sets a field when the legacy source exists AND the new field is absent.
+ */
+export const deriveNewFieldsFromLegacy = (saved: Record<string, unknown>): Record<string, unknown> => {
+  const light = (key: string): string | undefined =>
+    (saved[key] as { light?: string } | null | undefined)?.light;
+
+  const q = light("questionColor");
+  const b = light("brandColor");
+  const i = light("inputColor");
+
+  return {
+    ...(q && !saved.elementHeadlineColor && { elementHeadlineColor: { light: q } }),
+    ...(q && !saved.elementDescriptionColor && { elementDescriptionColor: { light: q } }),
+    ...(q && !saved.elementUpperLabelColor && { elementUpperLabelColor: { light: q } }),
+    ...(q && !saved.inputTextColor && { inputTextColor: { light: q } }),
+    ...(q && !saved.optionLabelColor && { optionLabelColor: { light: q } }),
+    ...(b && !saved.buttonBgColor && { buttonBgColor: { light: b } }),
+    ...(b && !saved.buttonTextColor && { buttonTextColor: { light: isLight(b) ? "#0f172a" : "#ffffff" } }),
+    ...(i && !saved.optionBgColor && { optionBgColor: { light: i } }),
+    ...(b && !saved.progressIndicatorBgColor && { progressIndicatorBgColor: { light: b } }),
+    ...(b &&
+      !saved.progressTrackBgColor && { progressTrackBgColor: { light: mixColor(b, "#ffffff", 0.8) } }),
+  };
+};
+
 /**
  * Builds a complete TProjectStyling object from a single brand color.
  *

apps/web/lib/utils/validate.ts

@@ -12,11 +12,18 @@ export function validateInputs<T extends ValidationPair<any>[]>(
   for (const [value, schema] of pairs) {
     const inputValidation = schema.safeParse(value);
     if (!inputValidation.success) {
+      const zodDetails = inputValidation.error.issues
+        .map((issue) => {
+          const path = issue?.path?.join(".") ?? "";
+          return `${path}${issue.message}`;
+        })
+        .join("; ");
+
       logger.error(
         inputValidation.error,
         `Validation failed for ${JSON.stringify(value).substring(0, 100)} and ${JSON.stringify(schema)}`
       );
-      throw new ValidationError("Validation failed");
+      throw new ValidationError(`Validation failed: ${zodDetails}`);
     }
     parsedData.push(inputValidation.data);
   }

apps/web/locales/de-DE.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Skaliert den Überschriftentext.",
         "advanced_styling_field_headline_weight": "Schriftstärke der Überschrift",
         "advanced_styling_field_headline_weight_description": "Macht den Überschriftentext heller oder fetter.",
-        "advanced_styling_field_height": "Höhe",
+        "advanced_styling_field_height": "Mindesthöhe",
         "advanced_styling_field_indicator_bg": "Indikator-Hintergrund",
         "advanced_styling_field_indicator_bg_description": "Färbt den gefüllten Teil des Balkens.",
         "advanced_styling_field_input_border_radius_description": "Rundet die Eingabeecken ab.",
         "advanced_styling_field_input_font_size_description": "Skaliert den eingegebenen Text in Eingabefeldern.",
-        "advanced_styling_field_input_height_description": "Steuert die Höhe des Eingabefelds.",
+        "advanced_styling_field_input_height_description": "Legt die Mindesthöhe des Eingabefelds fest.",
         "advanced_styling_field_input_padding_x_description": "Fügt links und rechts Abstand hinzu.",
         "advanced_styling_field_input_padding_y_description": "Fügt oben und unten Abstand hinzu.",
         "advanced_styling_field_input_placeholder_opacity_description": "Blendet den Platzhaltertext aus.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "\"Powered by Formbricks\"-Signatur anzeigen",
         "styling_updated_successfully": "Styling erfolgreich aktualisiert",
         "suggest_colors": "Farben vorschlagen",
+        "suggested_colors_applied_please_save": "Vorgeschlagene Farben erfolgreich generiert. Drücke \"Speichern\", um die Änderungen zu übernehmen.",
         "theme": "Theme",
         "theme_settings_description": "Erstelle ein Style-Theme für alle Umfragen. Du kannst für jede Umfrage individuelles Styling aktivieren."
       },

apps/web/locales/en-US.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Scales the headline text.",
         "advanced_styling_field_headline_weight": "Headline Font Weight",
         "advanced_styling_field_headline_weight_description": "Makes headline text lighter or bolder.",
-        "advanced_styling_field_height": "Height",
+        "advanced_styling_field_height": "Minimum Height",
         "advanced_styling_field_indicator_bg": "Indicator Background",
         "advanced_styling_field_indicator_bg_description": "Colors the filled portion of the bar.",
         "advanced_styling_field_input_border_radius_description": "Rounds the input corners.",
         "advanced_styling_field_input_font_size_description": "Scales the typed text in inputs.",
-        "advanced_styling_field_input_height_description": "Controls the input field height.",
+        "advanced_styling_field_input_height_description": "Controls the minimum height of the input field.",
         "advanced_styling_field_input_padding_x_description": "Adds space on the left and right.",
         "advanced_styling_field_input_padding_y_description": "Adds space on the top and bottom.",
         "advanced_styling_field_input_placeholder_opacity_description": "Fades the placeholder hint text.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Show “Powered by Formbricks” Signature",
         "styling_updated_successfully": "Styling updated successfully",
         "suggest_colors": "Suggest colors",
+        "suggested_colors_applied_please_save": "Suggested colors generated successfully. Press \"Save\" to persist the changes.",
         "theme": "Theme",
         "theme_settings_description": "Create a style theme for all surveys. You can enable custom styling for each survey."
       },

apps/web/locales/es-ES.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Escala el texto del titular.",
         "advanced_styling_field_headline_weight": "Grosor de fuente del titular",
         "advanced_styling_field_headline_weight_description": "Hace el texto del titular más ligero o más grueso.",
-        "advanced_styling_field_height": "Altura",
+        "advanced_styling_field_height": "Altura mínima",
         "advanced_styling_field_indicator_bg": "Fondo del indicador",
         "advanced_styling_field_indicator_bg_description": "Colorea la porción rellena de la barra.",
         "advanced_styling_field_input_border_radius_description": "Redondea las esquinas del campo.",
         "advanced_styling_field_input_font_size_description": "Escala el texto escrito en los campos.",
-        "advanced_styling_field_input_height_description": "Controla la altura del campo de entrada.",
+        "advanced_styling_field_input_height_description": "Controla la altura mínima del campo de entrada.",
         "advanced_styling_field_input_padding_x_description": "Añade espacio a la izquierda y a la derecha.",
         "advanced_styling_field_input_padding_y_description": "Añade espacio en la parte superior e inferior.",
         "advanced_styling_field_input_placeholder_opacity_description": "Atenúa el texto de sugerencia del marcador de posición.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Mostrar firma 'Powered by Formbricks'",
         "styling_updated_successfully": "Estilo actualizado correctamente",
         "suggest_colors": "Sugerir colores",
+        "suggested_colors_applied_please_save": "Colores sugeridos generados correctamente. Pulsa \"Guardar\" para conservar los cambios.",
         "theme": "Tema",
         "theme_settings_description": "Crea un tema de estilo para todas las encuestas. Puedes activar el estilo personalizado para cada encuesta."
       },

apps/web/locales/fr-FR.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Ajuste la taille du texte du titre.",
         "advanced_styling_field_headline_weight": "Graisse de police du titre",
         "advanced_styling_field_headline_weight_description": "Rend le texte du titre plus léger ou plus gras.",
-        "advanced_styling_field_height": "Hauteur",
+        "advanced_styling_field_height": "Hauteur minimale",
         "advanced_styling_field_indicator_bg": "Arrière-plan de l'indicateur",
         "advanced_styling_field_indicator_bg_description": "Colore la partie remplie de la barre.",
         "advanced_styling_field_input_border_radius_description": "Arrondit les coins du champ de saisie.",
         "advanced_styling_field_input_font_size_description": "Ajuste la taille du texte saisi dans les champs.",
-        "advanced_styling_field_input_height_description": "Contrôle la hauteur du champ de saisie.",
+        "advanced_styling_field_input_height_description": "Contrôle la hauteur minimale du champ de saisie.",
         "advanced_styling_field_input_padding_x_description": "Ajoute de l'espace à gauche et à droite.",
         "advanced_styling_field_input_padding_y_description": "Ajoute de l'espace en haut et en bas.",
         "advanced_styling_field_input_placeholder_opacity_description": "Atténue le texte d'indication du placeholder.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Afficher la signature « Propulsé par Formbricks »",
         "styling_updated_successfully": "Style mis à jour avec succès",
         "suggest_colors": "Suggérer des couleurs",
+        "suggested_colors_applied_please_save": "Couleurs suggérées générées avec succès. Appuyez sur « Enregistrer » pour conserver les modifications.",
         "theme": "Thème",
         "theme_settings_description": "Créez un thème de style pour toutes les enquêtes. Vous pouvez activer un style personnalisé pour chaque enquête."
       },

apps/web/locales/hu-HU.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Átméretezi a címsor szövegét.",
         "advanced_styling_field_headline_weight": "Címsor betűvastagsága",
         "advanced_styling_field_headline_weight_description": "Vékonyabbá vagy vastagabbá teszi a címsor szövegét.",
-        "advanced_styling_field_height": "Magasság",
+        "advanced_styling_field_height": "Minimális magasság",
         "advanced_styling_field_indicator_bg": "Jelző háttere",
         "advanced_styling_field_indicator_bg_description": "Kiszínezi a sáv kitöltött részét.",
         "advanced_styling_field_input_border_radius_description": "Lekerekíti a beviteli mező sarkait.",
         "advanced_styling_field_input_font_size_description": "Átméretezi a beviteli mezőkbe beírt szöveget.",
-        "advanced_styling_field_input_height_description": "A beviteli mező magasságát vezérli.",
+        "advanced_styling_field_input_height_description": "A beviteli mező minimális magasságát szabályozza.",
         "advanced_styling_field_input_padding_x_description": "Térközt ad hozzá balra és jobbra.",
         "advanced_styling_field_input_padding_y_description": "Térközt ad hozzá fent és lent.",
         "advanced_styling_field_input_placeholder_opacity_description": "Elhalványítja a helykitöltő súgószöveget.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Az „A gépházban: Formbricks” aláírás megjelenítése",
         "styling_updated_successfully": "A stílus sikeresen frissítve",
         "suggest_colors": "Színek ajánlása",
+        "suggested_colors_applied_please_save": "A javasolt színek sikeresen generálva. Nyomd meg a \"Mentés\" gombot a változtatások véglegesítéséhez.",
         "theme": "Téma",
         "theme_settings_description": "Stílustéma létrehozása az összes kérdőívhez. Egyéni stílust engedélyezhet minden egyes kérdőívhez."
       },

apps/web/locales/ja-JP.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "見出しテキストのサイズを調整します。",
         "advanced_styling_field_headline_weight": "見出しのフォントの太さ",
         "advanced_styling_field_headline_weight_description": "見出しテキストを細くまたは太くします。",
-        "advanced_styling_field_height": "高さ",
+        "advanced_styling_field_height": "最小の高さ",
         "advanced_styling_field_indicator_bg": "インジケーターの背景",
         "advanced_styling_field_indicator_bg_description": "バーの塗りつぶし部分に色を付けます。",
         "advanced_styling_field_input_border_radius_description": "入力フィールドの角を丸めます。",
         "advanced_styling_field_input_font_size_description": "入力フィールド内の入力テキストのサイズを調整します。",
-        "advanced_styling_field_input_height_description": "入力フィールドの高さを調整します。",
+        "advanced_styling_field_input_height_description": "入力フィールドの最小の高さを制御します。",
         "advanced_styling_field_input_padding_x_description": "左右にスペースを追加します。",
         "advanced_styling_field_input_padding_y_description": "上下にスペースを追加します。",
         "advanced_styling_field_input_placeholder_opacity_description": "プレースホルダーのヒントテキストを薄くします。",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "「Powered by Formbricks」署名を表示",
         "styling_updated_successfully": "スタイルを正常に更新しました",
         "suggest_colors": "カラーを提案",
+        "suggested_colors_applied_please_save": "推奨カラーが正常に生成されました。変更を保存するには「保存」を押してください。",
         "theme": "テーマ",
         "theme_settings_description": "すべてのアンケート用のスタイルテーマを作成します。各アンケートでカスタムスタイルを有効にできます。"
       },

apps/web/locales/nl-NL.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Schaalt de koptekst.",
         "advanced_styling_field_headline_weight": "Letterdikte kop",
         "advanced_styling_field_headline_weight_description": "Maakt koptekst lichter of vetter.",
-        "advanced_styling_field_height": "Hoogte",
+        "advanced_styling_field_height": "Minimale hoogte",
         "advanced_styling_field_indicator_bg": "Indicatorachtergrond",
         "advanced_styling_field_indicator_bg_description": "Kleurt het gevulde deel van de balk.",
         "advanced_styling_field_input_border_radius_description": "Rondt de invoerhoeken af.",
         "advanced_styling_field_input_font_size_description": "Schaalt de getypte tekst in invoervelden.",
-        "advanced_styling_field_input_height_description": "Bepaalt de hoogte van het invoerveld.",
+        "advanced_styling_field_input_height_description": "Bepaalt de minimale hoogte van het invoerveld.",
         "advanced_styling_field_input_padding_x_description": "Voegt ruimte toe aan de linker- en rechterkant.",
         "advanced_styling_field_input_padding_y_description": "Voegt ruimte toe aan de boven- en onderkant.",
         "advanced_styling_field_input_placeholder_opacity_description": "Vervaagt de tijdelijke aanwijzingstekst.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Toon 'Powered by Formbricks' handtekening",
         "styling_updated_successfully": "Styling succesvol bijgewerkt",
         "suggest_colors": "Kleuren voorstellen",
+        "suggested_colors_applied_please_save": "Voorgestelde kleuren succesvol gegenereerd. Druk op \"Opslaan\" om de wijzigingen te behouden.",
         "theme": "Thema",
         "theme_settings_description": "Maak een stijlthema voor alle enquêtes. Je kunt aangepaste styling inschakelen voor elke enquête."
       },

apps/web/locales/pt-BR.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Ajusta o tamanho do texto do título.",
         "advanced_styling_field_headline_weight": "Peso da fonte do título",
         "advanced_styling_field_headline_weight_description": "Torna o texto do título mais leve ou mais negrito.",
-        "advanced_styling_field_height": "Altura",
+        "advanced_styling_field_height": "Altura mínima",
         "advanced_styling_field_indicator_bg": "Fundo do indicador",
         "advanced_styling_field_indicator_bg_description": "Colore a porção preenchida da barra.",
         "advanced_styling_field_input_border_radius_description": "Arredonda os cantos do campo.",
         "advanced_styling_field_input_font_size_description": "Ajusta o tamanho do texto digitado nos campos.",
-        "advanced_styling_field_input_height_description": "Controla a altura do campo de entrada.",
+        "advanced_styling_field_input_height_description": "Controla a altura mínima do campo de entrada.",
         "advanced_styling_field_input_padding_x_description": "Adiciona espaço à esquerda e à direita.",
         "advanced_styling_field_input_padding_y_description": "Adiciona espaço na parte superior e inferior.",
         "advanced_styling_field_input_placeholder_opacity_description": "Esmaece o texto de dica do placeholder.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Mostrar assinatura 'Powered by Formbricks'",
         "styling_updated_successfully": "Estilo atualizado com sucesso",
         "suggest_colors": "Sugerir cores",
+        "suggested_colors_applied_please_save": "Cores sugeridas geradas com sucesso. Pressione \"Salvar\" para manter as alterações.",
         "theme": "Tema",
         "theme_settings_description": "Crie um tema de estilo para todas as pesquisas. Você pode ativar estilo personalizado para cada pesquisa."
       },

apps/web/locales/pt-PT.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Ajusta o tamanho do texto do título.",
         "advanced_styling_field_headline_weight": "Peso da fonte do título",
         "advanced_styling_field_headline_weight_description": "Torna o texto do título mais leve ou mais negrito.",
-        "advanced_styling_field_height": "Altura",
+        "advanced_styling_field_height": "Altura mínima",
         "advanced_styling_field_indicator_bg": "Fundo do indicador",
         "advanced_styling_field_indicator_bg_description": "Colore a porção preenchida da barra.",
         "advanced_styling_field_input_border_radius_description": "Arredonda os cantos do campo.",
         "advanced_styling_field_input_font_size_description": "Ajusta o tamanho do texto digitado nos campos.",
-        "advanced_styling_field_input_height_description": "Controla a altura do campo de entrada.",
+        "advanced_styling_field_input_height_description": "Controla a altura mínima do campo de entrada.",
         "advanced_styling_field_input_padding_x_description": "Adiciona espaço à esquerda e à direita.",
         "advanced_styling_field_input_padding_y_description": "Adiciona espaço no topo e na base.",
         "advanced_styling_field_input_placeholder_opacity_description": "Atenua o texto de sugestão do placeholder.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Mostrar assinatura 'Powered by Formbricks'",
         "styling_updated_successfully": "Estilo atualizado com sucesso",
         "suggest_colors": "Sugerir cores",
+        "suggested_colors_applied_please_save": "Cores sugeridas geradas com sucesso. Pressiona \"Guardar\" para manter as alterações.",
         "theme": "Tema",
         "theme_settings_description": "Crie um tema de estilo para todos os inquéritos. Pode ativar estilos personalizados para cada inquérito."
       },

apps/web/locales/ro-RO.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Scalează textul titlului.",
         "advanced_styling_field_headline_weight": "Grosime font titlu",
         "advanced_styling_field_headline_weight_description": "Face textul titlului mai subțire sau mai îngroșat.",
-        "advanced_styling_field_height": "Înălțime",
+        "advanced_styling_field_height": "Înălțime minimă",
         "advanced_styling_field_indicator_bg": "Fundal indicator",
         "advanced_styling_field_indicator_bg_description": "Colorează partea umplută a barei.",
         "advanced_styling_field_input_border_radius_description": "Rotunjește colțurile câmpurilor de introducere.",
         "advanced_styling_field_input_font_size_description": "Scalează textul introdus în câmpuri.",
-        "advanced_styling_field_input_height_description": "Controlează înălțimea câmpului de introducere.",
+        "advanced_styling_field_input_height_description": "Controlează înălțimea minimă a câmpului de introducere.",
         "advanced_styling_field_input_padding_x_description": "Adaugă spațiu la stânga și la dreapta.",
         "advanced_styling_field_input_padding_y_description": "Adaugă spațiu deasupra și dedesubt.",
         "advanced_styling_field_input_placeholder_opacity_description": "Estompează textul de sugestie din placeholder.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Afișează semnătura „Powered by Formbricks”",
         "styling_updated_successfully": "Stilizarea a fost actualizată cu succes",
         "suggest_colors": "Sugerează culori",
+        "suggested_colors_applied_please_save": "Culorile sugerate au fost generate cu succes. Apasă pe „Salvează” pentru a păstra modificările.",
         "theme": "Temă",
         "theme_settings_description": "Creează o temă de stil pentru toate sondajele. Poți activa stilizare personalizată pentru fiecare sondaj."
       },

apps/web/locales/ru-RU.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Масштабирует текст заголовка.",
         "advanced_styling_field_headline_weight": "Толщина шрифта заголовка",
         "advanced_styling_field_headline_weight_description": "Делает текст заголовка тоньше или жирнее.",
-        "advanced_styling_field_height": "Высота",
+        "advanced_styling_field_height": "Минимальная высота",
         "advanced_styling_field_indicator_bg": "Фон индикатора",
         "advanced_styling_field_indicator_bg_description": "Задаёт цвет заполненной части полосы.",
         "advanced_styling_field_input_border_radius_description": "Скругляет углы полей ввода.",
         "advanced_styling_field_input_font_size_description": "Масштабирует введённый текст в полях ввода.",
-        "advanced_styling_field_input_height_description": "Определяет высоту поля ввода.",
+        "advanced_styling_field_input_height_description": "Определяет минимальную высоту поля ввода.",
         "advanced_styling_field_input_padding_x_description": "Добавляет отступы слева и справа.",
         "advanced_styling_field_input_padding_y_description": "Добавляет пространство сверху и снизу.",
         "advanced_styling_field_input_placeholder_opacity_description": "Делает текст подсказки менее заметным.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Показывать подпись «Работает на Formbricks»",
         "styling_updated_successfully": "Стили успешно обновлены",
         "suggest_colors": "Предложить цвета",
+        "suggested_colors_applied_please_save": "Рекомендованные цвета успешно сгенерированы. Нажми «Сохранить», чтобы применить изменения.",
         "theme": "Тема",
         "theme_settings_description": "Создайте стиль для всех опросов. Вы можете включить индивидуальное оформление для каждого опроса."
       },

apps/web/locales/sv-SE.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "Ändrar storleken på rubriken.",
         "advanced_styling_field_headline_weight": "Rubrikens teckentjocklek",
         "advanced_styling_field_headline_weight_description": "Gör rubriktexten tunnare eller fetare.",
-        "advanced_styling_field_height": "Höjd",
+        "advanced_styling_field_height": "Minsta höjd",
         "advanced_styling_field_indicator_bg": "Indikatorns bakgrund",
         "advanced_styling_field_indicator_bg_description": "Färglägger den fyllda delen av stapeln.",
         "advanced_styling_field_input_border_radius_description": "Rundar av hörnen på inmatningsfält.",
         "advanced_styling_field_input_font_size_description": "Ändrar storleken på texten i inmatningsfält.",
-        "advanced_styling_field_input_height_description": "Styr höjden på inmatningsfältet.",
+        "advanced_styling_field_input_height_description": "Styr den minsta höjden på inmatningsfältet.",
         "advanced_styling_field_input_padding_x_description": "Lägger till utrymme till vänster och höger.",
         "advanced_styling_field_input_padding_y_description": "Lägger till utrymme upptill och nedtill.",
         "advanced_styling_field_input_placeholder_opacity_description": "Tonar ut platshållartexten.",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "Visa 'Powered by Formbricks'-signatur",
         "styling_updated_successfully": "Stiluppdatering lyckades",
         "suggest_colors": "Föreslå färger",
+        "suggested_colors_applied_please_save": "Föreslagna färger har skapats. Tryck på \"Spara\" för att spara ändringarna.",
         "theme": "Tema",
         "theme_settings_description": "Skapa ett stilmall för alla undersökningar. Du kan aktivera anpassad stil för varje undersökning."
       },

apps/web/locales/zh-Hans-CN.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "调整主标题文字大小。",
         "advanced_styling_field_headline_weight": "标题字体粗细",
         "advanced_styling_field_headline_weight_description": "设置主标题文字的粗细。",
-        "advanced_styling_field_height": "高度",
+        "advanced_styling_field_height": "最小高度",
         "advanced_styling_field_indicator_bg": "指示器背景",
         "advanced_styling_field_indicator_bg_description": "设置进度条已填充部分的颜色。",
         "advanced_styling_field_input_border_radius_description": "设置输入框圆角。",
         "advanced_styling_field_input_font_size_description": "调整输入框内文字大小。",
-        "advanced_styling_field_input_height_description": "控制输入框高度。",
+        "advanced_styling_field_input_height_description": "设置输入框的最小高度。",
         "advanced_styling_field_input_padding_x_description": "增加输入框左右间距。",
         "advanced_styling_field_input_padding_y_description": "为输入框上下添加间距。",
         "advanced_styling_field_input_placeholder_opacity_description": "调整占位提示文字的透明度。",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "显示“Powered by Formbricks”标识",
         "styling_updated_successfully": "样式更新成功",
         "suggest_colors": "推荐颜色",
+        "suggested_colors_applied_please_save": "已成功生成推荐配色。请点击“保存”以保留更改。",
         "theme": "主题",
         "theme_settings_description": "为所有问卷创建一个样式主题。你可以为每个问卷启用自定义样式。"
       },

apps/web/locales/zh-Hant-TW.json

@@ -2153,12 +2153,12 @@
         "advanced_styling_field_headline_size_description": "調整標題文字的大小。",
         "advanced_styling_field_headline_weight": "標題字體粗細",
         "advanced_styling_field_headline_weight_description": "讓標題文字變細或變粗。",
-        "advanced_styling_field_height": "高度",
+        "advanced_styling_field_height": "最小高度",
         "advanced_styling_field_indicator_bg": "指示器背景",
         "advanced_styling_field_indicator_bg_description": "設定進度條已填滿部分的顏色。",
         "advanced_styling_field_input_border_radius_description": "調整輸入框的圓角。",
         "advanced_styling_field_input_font_size_description": "調整輸入框內輸入文字的大小。",
-        "advanced_styling_field_input_height_description": "調整輸入欄位的高度。",
+        "advanced_styling_field_input_height_description": "設定輸入欄位的最小高度。",
         "advanced_styling_field_input_padding_x_description": "在左右兩側增加間距。",
         "advanced_styling_field_input_padding_y_description": "在上方和下方增加間距。",
         "advanced_styling_field_input_placeholder_opacity_description": "讓提示文字變得更淡。",
@@ -2221,6 +2221,7 @@
         "show_powered_by_formbricks": "顯示「Powered by Formbricks」標記",
         "styling_updated_successfully": "樣式已成功更新",
         "suggest_colors": "建議顏色",
+        "suggested_colors_applied_please_save": "已成功產生建議色彩。請按「儲存」以保存變更。",
         "theme": "主題",
         "theme_settings_description": "為所有調查建立樣式主題。您可以為每個調查啟用自訂樣式。"
       },

apps/web/modules/ee/contacts/api/v1/client/[environmentId]/user/route.ts

@@ -2,13 +2,26 @@ import { NextRequest, userAgent } from "next/server";
 import { logger } from "@formbricks/logger";
 import { TContactAttributesInput } from "@formbricks/types/contact-attribute";
 import { ZEnvironmentId } from "@formbricks/types/environment";
-import { ResourceNotFoundError } from "@formbricks/types/errors";
+import { ResourceNotFoundError, ValidationError } from "@formbricks/types/errors";
 import { TJsPersonState } from "@formbricks/types/js";
 import { responses } from "@/app/lib/api/response";
 import { withV1ApiWrapper } from "@/app/lib/api/with-api-logging";
 import { getIsContactsEnabled } from "@/modules/ee/license-check/lib/utils";
 import { updateUser } from "./lib/update-user";
 
+const handleError = (err: unknown, url: string): { response: Response } => {
+  if (err instanceof ResourceNotFoundError) {
+    return { response: responses.notFoundResponse(err.resourceType, err.resourceId) };
+  }
+
+  if (err instanceof ValidationError) {
+    return { response: responses.badRequestResponse(err.message, undefined, true) };
+  }
+
+  logger.error({ error: err, url }, "Error in POST /api/v1/client/[environmentId]/user");
+  return { response: responses.internalServerErrorResponse("Unable to fetch user state", true) };
+};
+
 export const OPTIONS = async (): Promise<Response> => {
   return responses.successResponse(
     {},
@@ -123,16 +136,7 @@ export const POST = withV1ApiWrapper({
         response: responses.successResponse(responseJson, true),
       };
     } catch (err) {
-      if (err instanceof ResourceNotFoundError) {
+      return handleError(err, req.url);
-        return {
-          response: responses.notFoundResponse(err.resourceType, err.resourceId),
-        };
-      }
-
-      logger.error({ error: err, url: req.url }, "Error in POST /api/v1/client/[environmentId]/user");
-      return {
-        response: responses.internalServerErrorResponse(err.message ?? "Unable to fetch person state", true),
-      };
     }
   },
 });

apps/web/modules/ee/contacts/lib/validate-attribute-type.test.ts

@@ -13,22 +13,14 @@ describe("validateAndParseAttributeValue", () => {
       }
     });
 
-    test("converts numbers to string", () => {
+    test("rejects number values (SDK must pass actual strings)", () => {
       const result = validateAndParseAttributeValue(42, "string", "testKey");
-      expect(result.valid).toBe(true);
+      expect(result.valid).toBe(false);
-      if (result.valid) {
+      if (!result.valid) {
-        expect(result.parsedValue.value).toBe("42");
+        expect(result.error.code).toBe("string_type_mismatch");
-        expect(result.parsedValue.valueNumber).toBeNull();
+        expect(result.error.params.key).toBe("testKey");
-      }
+        expect(result.error.params.type).toBe("number");
-    });
+        expect(formatValidationError(result.error)).toContain("received a number");
-
-    test("converts Date to ISO string", () => {
-      const date = new Date("2024-01-15T10:30:00.000Z");
-      const result = validateAndParseAttributeValue(date, "string", "testKey");
-      expect(result.valid).toBe(true);
-      if (result.valid) {
-        expect(result.parsedValue.value).toBe("2024-01-15T10:30:00.000Z");
-        expect(result.parsedValue.valueDate).toBeNull();
       }
     });
   });

apps/web/modules/ee/contacts/lib/validate-attribute-type.ts

@@ -27,15 +27,6 @@ export type TAttributeValidationResult =
       error: TAttributeValidationError;
     };
 
-/**
- * Converts any value to a string representation
- */
-const convertToString = (value: TRawValue): string => {
-  if (value instanceof Date) return value.toISOString();
-  if (typeof value === "number") return String(value);
-  return value;
-};
-
 /**
  * Gets a human-readable type name for error messages
  */
@@ -45,16 +36,28 @@ const getTypeName = (value: TRawValue): string => {
 };
 
 /**
- * Validates and parses a string type attribute
+ * Validates and parses a string type attribute.
  */
-const validateStringType = (value: TRawValue): TAttributeValidationResult => ({
+const validateStringType = (value: TRawValue, attributeKey: string): TAttributeValidationResult => {
-  valid: true,
+  if (typeof value === "string") {
-  parsedValue: {
+    return {
-    value: convertToString(value),
+      valid: true,
-    valueNumber: null,
+      parsedValue: {
-    valueDate: null,
+        value,
-  },
+        valueNumber: null,
-});
+        valueDate: null,
+      },
+    };
+  }
+
+  return {
+    valid: false,
+    error: {
+      code: "string_type_mismatch",
+      params: { key: attributeKey, type: getTypeName(value) },
+    },
+  };
+};
 
 /**
  * Validates and parses a number type attribute.
@@ -170,13 +173,13 @@ export const validateAndParseAttributeValue = (
 ): TAttributeValidationResult => {
   switch (expectedDataType) {
     case "string":
-      return validateStringType(value);
+      return validateStringType(value, attributeKey);
     case "number":
       return validateNumberType(value, attributeKey);
     case "date":
       return validateDateType(value, attributeKey);
     default:
-      return validateStringType(value);
+      return validateStringType(value, attributeKey);
   }
 };
 
@@ -185,6 +188,8 @@ export const validateAndParseAttributeValue = (
  * Used for API/SDK responses.
  */
 const VALIDATION_ERROR_TEMPLATES: Record<string, string> = {
+  string_type_mismatch:
+    "Attribute '{key}' expects a string but received a {type}. Pass an actual string value.",
   number_type_mismatch:
     "Attribute '{key}' expects a number but received a string. Pass an actual number value (e.g., 123 instead of \"123\").",
   date_invalid: "Attribute '{key}' expects a valid date. Received: Invalid Date",

apps/web/modules/projects/settings/look/components/theme-styling.tsx

@@ -11,7 +11,12 @@ import { useTranslation } from "react-i18next";
 import { TProjectStyling, ZProjectStyling } from "@formbricks/types/project";
 import { TSurveyStyling, TSurveyType } from "@formbricks/types/surveys/types";
 import { previewSurvey } from "@/app/lib/templates";
-import { STYLE_DEFAULTS, getSuggestedColors } from "@/lib/styling/constants";
+import {
+  COLOR_DEFAULTS,
+  STYLE_DEFAULTS,
+  deriveNewFieldsFromLegacy,
+  getSuggestedColors,
+} from "@/lib/styling/constants";
 import { getFormattedErrorMessage } from "@/lib/utils/helper";
 import { updateProjectAction } from "@/modules/projects/settings/actions";
 import { FormStylingSettings } from "@/modules/survey/editor/components/form-styling-settings";
@@ -62,11 +67,23 @@ export const ThemeStyling = ({
     ? Object.fromEntries(Object.entries(savedStyling).filter(([, v]) => v != null))
     : {};
 
+  const legacyFills = deriveNewFieldsFromLegacy(cleanSaved);
+
   const form = useForm<TProjectStyling>({
-    defaultValues: { ...STYLE_DEFAULTS, ...cleanSaved },
+    defaultValues: { ...STYLE_DEFAULTS, ...legacyFills, ...cleanSaved },
     resolver: zodResolver(ZProjectStyling),
   });
 
+  // Brand color shown in the preview.  Only updated when the user triggers
+  // "Suggest colors", "Save", or "Reset to default" — NOT on every keystroke
+  // in the brand-color picker.  This prevents the loading-spinner / progress
+  // bar from updating while the user is still picking a colour.
+  const [previewBrandColor, setPreviewBrandColor] = useState<string>(
+    (cleanSaved as Partial<TProjectStyling>).brandColor?.light ??
+      STYLE_DEFAULTS.brandColor?.light ??
+      COLOR_DEFAULTS.brandColor
+  );
+
   const [previewSurveyType, setPreviewSurveyType] = useState<TSurveyType>("link");
   const [confirmResetStylingModalOpen, setConfirmResetStylingModalOpen] = useState(false);
   const [confirmSuggestColorsOpen, setConfirmSuggestColorsOpen] = useState(false);
@@ -84,6 +101,7 @@ export const ThemeStyling = ({
 
     if (updatedProjectResponse?.data) {
       form.reset({ ...STYLE_DEFAULTS });
+      setPreviewBrandColor(STYLE_DEFAULTS.brandColor?.light ?? COLOR_DEFAULTS.brandColor);
       toast.success(t("environments.workspace.look.styling_updated_successfully"));
       router.refresh();
     } else {
@@ -100,7 +118,10 @@ export const ThemeStyling = ({
       form.setValue(key as keyof TProjectStyling, value, { shouldDirty: true });
     }
 
-    toast.success(t("environments.workspace.look.styling_updated_successfully"));
+    // Commit brand color to the preview now that all derived colours are in sync.
+    setPreviewBrandColor(brandColor ?? STYLE_DEFAULTS.brandColor?.light ?? COLOR_DEFAULTS.brandColor);
+
+    toast.success(t("environments.workspace.look.suggested_colors_applied_please_save"));
     setConfirmSuggestColorsOpen(false);
   };
 
@@ -113,7 +134,11 @@ export const ThemeStyling = ({
     });
 
     if (updatedProjectResponse?.data) {
-      form.reset({ ...updatedProjectResponse.data.styling });
+      const saved = updatedProjectResponse.data.styling;
+      form.reset({ ...saved });
+      setPreviewBrandColor(
+        saved?.brandColor?.light ?? STYLE_DEFAULTS.brandColor?.light ?? COLOR_DEFAULTS.brandColor
+      );
       toast.success(t("environments.workspace.look.styling_updated_successfully"));
     } else {
       const errorMessage = getFormattedErrorMessage(updatedProjectResponse);
@@ -249,7 +274,9 @@ export const ThemeStyling = ({
                 survey={previewSurvey(project.name, t)}
                 project={{
                   ...project,
-                  styling: form.watch("allowStyleOverwrite") ? form.watch() : STYLE_DEFAULTS,
+                  styling: form.watch("allowStyleOverwrite")
+                    ? { ...form.watch(), brandColor: { light: previewBrandColor } }
+                    : STYLE_DEFAULTS,
                 }}
                 previewType={previewSurveyType}
                 setPreviewType={setPreviewSurveyType}

apps/web/modules/survey/editor/components/styling-view.tsx

@@ -9,7 +9,7 @@ import toast from "react-hot-toast";
 import { useTranslation } from "react-i18next";
 import { TProjectStyling } from "@formbricks/types/project";
 import { TSurvey, TSurveyStyling } from "@formbricks/types/surveys/types";
-import { STYLE_DEFAULTS, getSuggestedColors } from "@/lib/styling/constants";
+import { STYLE_DEFAULTS, deriveNewFieldsFromLegacy, getSuggestedColors } from "@/lib/styling/constants";
 import { FormStylingSettings } from "@/modules/survey/editor/components/form-styling-settings";
 import { LogoSettingsCard } from "@/modules/survey/editor/components/logo-settings-card";
 import { AlertDialog } from "@/modules/ui/components/alert-dialog";
@@ -68,10 +68,15 @@ export const StylingView = ({
     ? Object.fromEntries(Object.entries(localSurvey.styling).filter(([, v]) => v != null))
     : {};
 
+  const projectLegacyFills = deriveNewFieldsFromLegacy(cleanProject);
+  const surveyLegacyFills = deriveNewFieldsFromLegacy(cleanSurvey);
+
   const form = useForm<TSurveyStyling>({
     defaultValues: {
       ...STYLE_DEFAULTS,
+      ...projectLegacyFills,
       ...cleanProject,
+      ...surveyLegacyFills,
       ...cleanSurvey,
     },
   });
@@ -94,7 +99,7 @@ export const StylingView = ({
       form.setValue(key as keyof TSurveyStyling, value, { shouldDirty: true });
     }
 
-    toast.success(t("environments.workspace.look.styling_updated_successfully"));
+    toast.success(t("environments.workspace.look.suggested_colors_applied_please_save"));
     setConfirmSuggestColorsOpen(false);
   };
 

apps/web/modules/ui/components/input-combo-box/index.tsx

@@ -226,7 +226,7 @@ export const InputCombobox: React.FC<InputComboboxProps> = ({
             tabIndex={0}
             aria-controls="options"
             aria-expanded={open}
-            className={cn("flex h-full w-full cursor-pointer items-center justify-end bg-white pr-2", {
+            className={cn("flex w-full cursor-pointer items-center justify-end bg-white pr-2 h-10", {
               "w-10 justify-center pr-0": withInput && inputType !== "dropdown",
               "pointer-events-none": isClearing,
             })}>

apps/web/modules/ui/components/preview-survey/index.tsx

@@ -225,10 +225,10 @@ export const PreviewSurvey = ({
         )}>
         {previewMode === "mobile" && (
           <>
-            <p className="absolute top-0 left-0 m-2 rounded bg-slate-100 px-2 py-1 text-xs text-slate-400">
+            <p className="absolute left-0 top-0 m-2 rounded bg-slate-100 px-2 py-1 text-xs text-slate-400">
               Preview
             </p>
-            <div className="absolute top-0 right-0 m-2">
+            <div className="absolute right-0 top-0 m-2">
               <ResetProgressButton onClick={resetProgress} />
             </div>
             <MediaBackground
@@ -265,7 +265,7 @@ export const PreviewSurvey = ({
                 </Modal>
               ) : (
                 <div className="flex h-full w-full flex-col justify-center px-1">
-                  <div className="absolute top-5 left-5">
+                  <div className="absolute left-5 top-5">
                     {!styling.isLogoHidden && (
                       <ClientLogo
                         environmentId={environment.id}
@@ -296,7 +296,7 @@ export const PreviewSurvey = ({
           </>
         )}
         {previewMode === "desktop" && (
-          <div className="flex h-full flex-1 flex-col">
+          <div className="flex h-full w-full flex-1 flex-col">
             <div className="flex h-8 w-full items-center rounded-t-lg bg-slate-100">
               <div className="ml-6 flex space-x-2">
                 <div className="h-3 w-3 rounded-full bg-red-500"></div>
@@ -373,7 +373,7 @@ export const PreviewSurvey = ({
                 styling={styling}
                 ContentRef={ContentRef as React.RefObject<HTMLDivElement>}
                 isEditorView>
-                <div className="absolute top-5 left-5">
+                <div className="absolute left-5 top-5">
                   {!styling.isLogoHidden && (
                     <ClientLogo
                       environmentId={environment.id}

apps/web/playwright/survey-styling.spec.ts

@@ -96,6 +96,7 @@ test.describe("Survey Styling", async () => {
     expect(css).toContain("--fb-input-background-color: #eeeeee");
     expect(css).toContain("--fb-input-border-color: #cccccc");
     expect(css).toContain("--fb-input-text-color: #024eff");
+    expect(css).toContain("--fb-input-placeholder-color:");
     expect(css).toContain("--fb-input-border-radius: 5px");
     expect(css).toContain("--fb-input-height: 50px");
     expect(css).toContain("--fb-input-font-size: 16px");

packages/survey-ui/src/styles/globals.css

@@ -127,12 +127,12 @@
   --fb-input-font-size: 14px;
   --fb-input-font-weight: 400;
   --fb-input-color: #414b5a;
-  --fb-input-placeholder-color: var(--fb-input-color);
+  --fb-input-placeholder-color: var(--fb-input-text-color, var(--fb-input-color));
   --fb-input-placeholder-opacity: 0.5;
   --fb-input-width: 100%;
-  --fb-input-height: 40px;
+  --fb-input-height: 20px;
-  --fb-input-padding-x: 16px;
+  --fb-input-padding-x: 8px;
-  --fb-input-padding-y: 16px;
+  --fb-input-padding-y: 8px;
   --fb-input-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
 
   /* ── Progress Bar ──────────────────────────────────────────────────── */
@@ -244,4 +244,4 @@
 
 #fbjs textarea::-webkit-scrollbar-thumb:hover {
   background-color: hsl(215.4 16.3% 46.9% / 0.5);
-}
+}

packages/surveys/src/lib/styles.test.ts

@@ -443,6 +443,39 @@ describe("addCustomThemeToDom", () => {
     expect(variables["--fb-button-font-size"]).toBe("1.5rem");
   });
 
+  test("should derive input-placeholder-color from inputTextColor when set", () => {
+    const styling: TSurveyStyling = {
+      ...getBaseProjectStyling(),
+      questionColor: { light: "#AABBCC" },
+      inputTextColor: { light: "#112233" },
+    };
+    addCustomThemeToDom({ styling });
+    const styleElement = document.getElementById("formbricks__css__custom") as HTMLStyleElement;
+    const variables = getCssVariables(styleElement);
+
+    // Placeholder should be derived from inputTextColor, not questionColor
+    expect(variables["--fb-input-placeholder-color"]).toBeDefined();
+    expect(variables["--fb-placeholder-color"]).toBeDefined();
+    // Both should be based on inputTextColor (#112233) mixed with white, not questionColor (#AABBCC)
+    // We can verify by checking the placeholder color doesn't contain the questionColor mix
+    expect(variables["--fb-input-placeholder-color"]).toBe(variables["--fb-placeholder-color"]);
+  });
+
+  test("should derive input-placeholder-color from questionColor when inputTextColor is not set", () => {
+    const styling: TSurveyStyling = {
+      ...getBaseProjectStyling(),
+      questionColor: { light: "#AABBCC" },
+    };
+    addCustomThemeToDom({ styling });
+    const styleElement = document.getElementById("formbricks__css__custom") as HTMLStyleElement;
+    const variables = getCssVariables(styleElement);
+
+    // Placeholder should fall back to questionColor when inputTextColor is not set
+    expect(variables["--fb-input-placeholder-color"]).toBeDefined();
+    expect(variables["--fb-placeholder-color"]).toBeDefined();
+    expect(variables["--fb-input-placeholder-color"]).toBe(variables["--fb-placeholder-color"]);
+  });
+
   test("should set signature and branding text colors for dark questionColor", () => {
     const styling = getBaseProjectStyling({
       questionColor: { light: "#202020" }, // A dark color

packages/surveys/src/lib/styles.ts

@@ -111,8 +111,10 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
   // Backwards-compat: legacy variables still used by some consumers/tests
   appendCssVariable("subheading-color", styling.questionColor?.light);
 
-  if (styling.questionColor?.light) {
+  const placeholderBaseColor = styling.inputTextColor?.light ?? styling.questionColor?.light;
-    appendCssVariable("placeholder-color", mixColor(styling.questionColor.light, "#ffffff", 0.3));
+  if (placeholderBaseColor) {
+    appendCssVariable("placeholder-color", mixColor(placeholderBaseColor, "#ffffff", 0.3));
+    appendCssVariable("input-placeholder-color", mixColor(placeholderBaseColor, "#ffffff", 0.3));
   }
 
   appendCssVariable("border-color", styling.inputBorderColor?.light);
@@ -192,8 +194,13 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
   }
 
   // Buttons (Advanced)
-  appendCssVariable("button-bg-color", styling.buttonBgColor?.light);
+  const buttonBg = styling.buttonBgColor?.light ?? styling.brandColor?.light;
-  appendCssVariable("button-text-color", styling.buttonTextColor?.light);
+  let buttonText = styling.buttonTextColor?.light;
+  if (buttonText === undefined && buttonBg) {
+    buttonText = isLight(buttonBg) ? "#0f172a" : "#ffffff";
+  }
+  appendCssVariable("button-bg-color", buttonBg);
+  appendCssVariable("button-text-color", buttonText);
   if (styling.buttonBorderRadius !== undefined)
     appendCssVariable("button-border-radius", formatDimension(styling.buttonBorderRadius));
   if (styling.buttonHeight !== undefined)
@@ -209,7 +216,11 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
 
   // Inputs (Advanced)
   appendCssVariable("input-background-color", styling.inputBgColor?.light ?? styling.inputColor?.light);
-  appendCssVariable("input-text-color", styling.inputTextColor?.light);
+  const inputTextColor = styling.inputTextColor?.light ?? styling.questionColor?.light;
+  appendCssVariable("input-text-color", inputTextColor);
+  if (inputTextColor) {
+    appendCssVariable("input-placeholder-color", mixColor(inputTextColor, "#ffffff", 0.3));
+  }
   if (styling.inputBorderRadius !== undefined)
     appendCssVariable("input-border-radius", formatDimension(styling.inputBorderRadius));
   if (styling.inputHeight !== undefined)
@@ -225,8 +236,8 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
   appendCssVariable("input-shadow", styling.inputShadow);
 
   // Options (Advanced)
-  appendCssVariable("option-bg-color", styling.optionBgColor?.light);
+  appendCssVariable("option-bg-color", styling.optionBgColor?.light ?? styling.inputColor?.light);
-  appendCssVariable("option-label-color", styling.optionLabelColor?.light);
+  appendCssVariable("option-label-color", styling.optionLabelColor?.light ?? styling.questionColor?.light);
   if (styling.optionBorderRadius !== undefined)
     appendCssVariable("option-border-radius", formatDimension(styling.optionBorderRadius));
   if (styling.optionPaddingX !== undefined)
@@ -277,8 +288,15 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
   // Implicitly set the progress track border radius to the roundness of the card
   appendCssVariable("progress-track-border-radius", formatDimension(roundness));
 
-  appendCssVariable("progress-track-bg-color", styling.progressTrackBgColor?.light);
+  appendCssVariable(
-  appendCssVariable("progress-indicator-bg-color", styling.progressIndicatorBgColor?.light);
+    "progress-track-bg-color",
+    styling.progressTrackBgColor?.light ??
+      (styling.brandColor?.light ? mixColor(styling.brandColor.light, "#ffffff", 0.8) : undefined)
+  );
+  appendCssVariable(
+    "progress-indicator-bg-color",
+    styling.progressIndicatorBgColor?.light ?? styling.brandColor?.light
+  );
 
   // Close the #fbjs variable block
   cssVariables += "}\n";
@@ -304,7 +322,7 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
     headlineDecls += "  font-size: var(--fb-element-headline-font-size) !important;\n";
   if (styling.elementHeadlineFontWeight !== undefined && styling.elementHeadlineFontWeight !== null)
     headlineDecls += "  font-weight: var(--fb-element-headline-font-weight) !important;\n";
-  if (styling.elementHeadlineColor?.light)
+  if (styling.elementHeadlineColor?.light || styling.questionColor?.light)
     headlineDecls += "  color: var(--fb-element-headline-color) !important;\n";
   addRule("#fbjs .label-headline,\n#fbjs .label-headline *", headlineDecls);
 
@@ -314,7 +332,7 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
     descriptionDecls += "  font-size: var(--fb-element-description-font-size) !important;\n";
   if (styling.elementDescriptionFontWeight !== undefined && styling.elementDescriptionFontWeight !== null)
     descriptionDecls += "  font-weight: var(--fb-element-description-font-weight) !important;\n";
-  if (styling.elementDescriptionColor?.light)
+  if (styling.elementDescriptionColor?.light || styling.questionColor?.light)
     descriptionDecls += "  color: var(--fb-element-description-color) !important;\n";
   addRule("#fbjs .label-description,\n#fbjs .label-description *", descriptionDecls);
 
@@ -324,7 +342,7 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
     upperDecls += "  font-size: var(--fb-element-upper-label-font-size) !important;\n";
   if (styling.elementUpperLabelFontWeight !== undefined && styling.elementUpperLabelFontWeight !== null)
     upperDecls += "  font-weight: var(--fb-element-upper-label-font-weight) !important;\n";
-  if (styling.elementUpperLabelColor?.light) {
+  if (styling.elementUpperLabelColor?.light || styling.questionColor?.light) {
     upperDecls += "  color: var(--fb-element-upper-label-color) !important;\n";
     upperDecls += "  opacity: var(--fb-element-upper-label-opacity, 1) !important;\n";
   }
@@ -332,9 +350,10 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
 
   // --- Buttons ---
   let buttonDecls = "";
-  if (styling.buttonBgColor?.light)
+  if (styling.buttonBgColor?.light || styling.brandColor?.light)
     buttonDecls += "  background-color: var(--fb-button-bg-color) !important;\n";
-  if (styling.buttonTextColor?.light) buttonDecls += "  color: var(--fb-button-text-color) !important;\n";
+  if (styling.buttonTextColor?.light || styling.brandColor?.light)
+    buttonDecls += "  color: var(--fb-button-text-color) !important;\n";
   if (styling.buttonBorderRadius !== undefined)
     buttonDecls += "  border-radius: var(--fb-button-border-radius) !important;\n";
   if (styling.buttonHeight !== undefined) buttonDecls += "  height: var(--fb-button-height) !important;\n";
@@ -355,11 +374,11 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
   // --- Options ---
   if (styling.optionBorderRadius !== undefined)
     addRule("#fbjs .rounded-option", "  border-radius: var(--fb-option-border-radius) !important;\n");
-  if (styling.optionBgColor?.light)
+  if (styling.optionBgColor?.light || styling.inputColor?.light)
     addRule("#fbjs .bg-option-bg", "  background-color: var(--fb-option-bg-color) !important;\n");
 
   let optionLabelDecls = "";
-  if (styling.optionLabelColor?.light)
+  if (styling.optionLabelColor?.light || styling.questionColor?.light)
     optionLabelDecls += "  color: var(--fb-option-label-color) !important;\n";
   if (styling.optionFontSize !== undefined)
     optionLabelDecls += "  font-size: var(--fb-option-font-size) !important;\n";
@@ -385,7 +404,8 @@ export const addCustomThemeToDom = ({ styling }: { styling: TProjectStyling | TS
     addRule("#fbjs .border-input-border", "  border-color: var(--fb-input-border-color) !important;\n");
 
   let inputTextDecls = "";
-  if (styling.inputTextColor?.light) inputTextDecls += "  color: var(--fb-input-text-color) !important;\n";
+  if (styling.inputTextColor?.light || styling.questionColor?.light)
+    inputTextDecls += "  color: var(--fb-input-text-color) !important;\n";
   if (styling.inputFontSize !== undefined)
     inputTextDecls += "  font-size: var(--fb-input-font-size) !important;\n";
   addRule("#fbjs .text-input-text", inputTextDecls);