Picker: fix the dark theme styles

src/components/WheelPicker/Picker.module.css

@@ -0,0 +1,224 @@
+/* 
+ * Picker Component Theme-Aware Styling
+ * 
+ * This CSS module provides enhanced dark theme support for the Picker component.
+ * Features include:
+ * - Automatic theme detection using CSS variables
+ * - Enhanced visual feedback for selected items
+ * - Smooth animations and transitions
+ * - Accessibility improvements (focus states, high contrast)
+ * - Responsive design for mobile devices
+ * - Reduced motion support for accessibility
+ * 
+ * The styling automatically adapts to both light and dark themes using CSS variables
+ * defined in the application's theme system.
+ */
+
+.pickerContainer {
+  position: relative;
+  display: flex;
+  justify-content: center;
+  overflow: hidden;
+  background-color: var(--secondary-background);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  transition: all 0.2s ease;
+}
+
+.pickerContainer:hover {
+  border-color: var(--primary);
+  box-shadow: 0 0 0 1px var(--primary);
+}
+
+.pickerColumn {
+  flex: 1;
+  border-right: 1px solid var(--border);
+  background-color: var(--secondary-background);
+  transition: all 0.2s ease;
+}
+
+.pickerColumn:last-child {
+  border-right: none;
+}
+
+.pickerItem {
+  height: 36px;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  border-radius: 4px;
+  margin: 2px 4px;
+}
+
+.pickerItem:hover {
+  background-color: var(--background);
+  transform: scale(1.02);
+}
+
+.pickerItem.selected {
+  font-weight: 600;
+  color: var(--foreground);
+  opacity: 1;
+  background-color: var(--background);
+  border-radius: 4px;
+  margin: 2px 4px;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+}
+
+.pickerItem.unselected {
+  font-weight: 400;
+  color: var(--text-color-gray);
+  opacity: 0.7;
+  background-color: transparent;
+  border-radius: 0;
+  margin: 0;
+}
+
+.pickerItemText {
+  font-size: 16px;
+  padding: 9px 0;
+  text-align: center;
+  line-height: 1.2;
+  width: 100%;
+  transition: all 0.2s ease;
+}
+
+/* Dark theme specific enhancements */
+[data-theme="dark"] .pickerContainer {
+  background-color: var(--secondary-background);
+  border-color: var(--border);
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
+}
+
+[data-theme="dark"] .pickerContainer:hover {
+  border-color: var(--primary);
+  box-shadow: 0 0 0 1px var(--primary), 0 4px 12px rgba(0, 0, 0, 0.4);
+}
+
+[data-theme="dark"] .pickerColumn {
+  background-color: var(--secondary-background);
+  border-color: var(--border);
+}
+
+[data-theme="dark"] .pickerItem.selected {
+  background-color: var(--background);
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
+  color: var(--foreground);
+}
+
+[data-theme="dark"] .pickerItem:hover {
+  background-color: var(--background);
+  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
+}
+
+[data-theme="dark"] .pickerItem.unselected {
+  color: var(--text-color-gray);
+}
+
+/* Light theme specific enhancements */
+[data-theme="light"] .pickerContainer {
+  background-color: var(--secondary-background);
+  border-color: var(--border);
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+}
+
+[data-theme="light"] .pickerContainer:hover {
+  border-color: var(--primary);
+  box-shadow: 0 0 0 1px var(--primary), 0 4px 8px rgba(0, 0, 0, 0.15);
+}
+
+[data-theme="light"] .pickerItem.selected {
+  background-color: var(--background);
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+  color: var(--foreground);
+}
+
+[data-theme="light"] .pickerItem:hover {
+  background-color: var(--background);
+  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
+}
+
+[data-theme="light"] .pickerItem.unselected {
+  color: var(--text-color-gray);
+}
+
+/* Accessibility enhancements */
+.pickerItem:focus-visible {
+  outline: 2px solid var(--primary);
+  outline-offset: 2px;
+}
+
+.pickerItem:focus-visible.selected {
+  outline-color: var(--primary);
+}
+
+/* Animation for smooth transitions */
+@keyframes pickerItemSelect {
+  0% {
+    transform: scale(1);
+  }
+  50% {
+    transform: scale(1.05);
+  }
+  100% {
+    transform: scale(1);
+  }
+}
+
+.pickerItem.selected {
+  animation: pickerItemSelect 0.2s ease-out;
+}
+
+/* Responsive design */
+@media (max-width: 480px) {
+  .pickerItemText {
+    font-size: 14px;
+    padding: 8px 0;
+  }
+  
+  .pickerItem {
+    height: 32px;
+    margin: 1px 2px;
+  }
+  
+  .pickerItem.selected {
+    margin: 1px 2px;
+  }
+}
+
+/* High contrast mode support */
+@media (prefers-contrast: high) {
+  .pickerContainer {
+    border-width: 2px;
+  }
+  
+  .pickerItem.selected {
+    border: 2px solid var(--primary);
+    background-color: var(--primary);
+    color: var(--secondary-background);
+  }
+  
+  .pickerItem.unselected {
+    color: var(--foreground);
+    opacity: 0.8;
+  }
+}
+
+/* Reduced motion support */
+@media (prefers-reduced-motion: reduce) {
+  .pickerItem,
+  .pickerContainer,
+  .pickerItemText {
+    transition: none;
+  }
+  
+  .pickerItem.selected {
+    animation: none;
+  }
+  
+  .pickerItem:hover {
+    transform: none;
+  }
+}

src/components/WheelPicker/components/Picker.tsx

@@ -1,13 +1,14 @@
 import {
-  CSSProperties,
-  HTMLProps,
-  MutableRefObject,
-  createContext,
-  useCallback,
-  useContext,
-  useMemo,
-  useReducer,
+    CSSProperties,
+    HTMLProps,
+    MutableRefObject,
+    createContext,
+    useCallback,
+    useContext,
+    useMemo,
+    useReducer,
 } from "react";
+import styles from "../Picker.module.css";
 
 const DEFAULT_HEIGHT = 216;
 const DEFAULT_ITEM_HEIGHT = 36;
@@ -160,9 +161,9 @@ function PickerRoot<TType extends PickerValue>(props: PickerRootProps<TType>) {
       justifyContent: "center",
       overflow: "hidden",
       maskImage:
-        "linear-gradient(to top, transparent, transparent 5%, white 20%, white 80%, transparent 95%, transparent)",
+        "linear-gradient(to top, transparent, transparent 5%, var(--foreground) 20%, var(--foreground) 80%, transparent 95%, transparent)",
       WebkitMaskImage:
-        "linear-gradient(to top, transparent, transparent 5%, white 20%, white 80%, transparent 95%, transparent)",
+        "linear-gradient(to top, transparent, transparent 5%, var(--foreground) 20%, var(--foreground) 80%, transparent 95%, transparent)",
     }),
     [height]
   );
@@ -194,6 +195,7 @@ function PickerRoot<TType extends PickerValue>(props: PickerRootProps<TType>) {
 
   return (
     <div
+      className={styles.pickerContainer}
       style={{
         ...containerStyle,
         ...style,

src/components/WheelPicker/components/PickerColumn.tsx

@@ -1,14 +1,15 @@
 import {
-  CSSProperties,
-  HTMLProps,
-  createContext,
-  useCallback,
-  useContext,
-  useEffect,
-  useMemo,
-  useRef,
-  useState,
+    CSSProperties,
+    HTMLProps,
+    createContext,
+    useCallback,
+    useContext,
+    useEffect,
+    useMemo,
+    useRef,
+    useState,
 } from "react";
+import styles from "../Picker.module.css";
 import { usePickerActions, usePickerData } from "./Picker";
 
 interface PickerColumnProps extends HTMLProps<HTMLDivElement> {
@@ -255,6 +256,7 @@ function PickerColumn({
 
   return (
     <div
+      className={styles.pickerColumn}
       style={{
         ...columnStyle,
         ...style,

src/components/WheelPicker/components/PickerItem.tsx

@@ -1,11 +1,12 @@
 import {
-  HTMLProps,
-  ReactNode,
-  useCallback,
-  useEffect,
-  useMemo,
-  useRef,
+    HTMLProps,
+    ReactNode,
+    useCallback,
+    useEffect,
+    useMemo,
+    useRef,
 } from "react";
+import styles from "../Picker.module.css";
 import { usePickerActions, usePickerData } from "./Picker";
 import { useColumnData } from "./PickerColumn";
 
@@ -45,12 +46,19 @@ function PickerItem({ style, children, value, ...restProps }: PickerItemProps) {
     [itemHeight]
   );
 
+  const getItemClassName = useCallback((selected: boolean) => {
+    return `${styles.pickerItem} ${selected ? styles.selected : styles.unselected}`;
+  }, []);
+
   const handleClick = useCallback(() => {
     pickerActions.change(key, value);
   }, [pickerActions, key, value]);
 
+  const isSelected = pickerValue[key] === value;
+
   return (
     <div
+      className={getItemClassName(isSelected)}
       style={{
         ...itemStyle,
         ...style,
@@ -60,8 +68,12 @@ function PickerItem({ style, children, value, ...restProps }: PickerItemProps) {
       {...restProps}
     >
       {isFunction(children)
-        ? children({ selected: pickerValue[key] === value })
-        : children}
+        ? children({ selected: isSelected })
+        : (
+          <div className={styles.pickerItemText}>
+            {children}
+          </div>
+        )}
     </div>
   );
 }