diff --git a/src/components/config/VisualConfigEditor.tsx b/src/components/config/VisualConfigEditor.tsx
index d75208c..9432aa3 100644
--- a/src/components/config/VisualConfigEditor.tsx
+++ b/src/components/config/VisualConfigEditor.tsx
@@ -1,10 +1,10 @@
-import { useEffect, useMemo, useRef, useState, type ReactNode } from 'react';
+import { useMemo, useState, type ReactNode } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/Button';
 import { Input } from '@/components/ui/Input';
 import { Modal } from '@/components/ui/Modal';
+import { Select } from '@/components/ui/Select';
 import { ToggleSwitch } from '@/components/ui/ToggleSwitch';
-import { IconChevronDown } from '@/components/ui/icons';
 import { ConfigSection } from '@/components/config/ConfigSection';
 import { useNotificationStore } from '@/stores';
 import styles from './VisualConfigEditor.module.scss';
@@ -81,120 +81,6 @@ function Divider() {
   return <div style={{ height: 1, background: 'var(--border-color)', margin: '16px 0' }} />;
 }
 
-type ToastSelectOption = { value: string; label: string };
-
-function ToastSelect({
-  value,
-  options,
-  disabled,
-  ariaLabel,
-  onChange,
-}: {
-  value: string;
-  options: ReadonlyArray<ToastSelectOption>;
-  disabled?: boolean;
-  ariaLabel: string;
-  onChange: (value: string) => void;
-}) {
-  const [open, setOpen] = useState(false);
-  const containerRef = useRef<HTMLDivElement | null>(null);
-
-  const selectedOption = options.find((opt) => opt.value === value) ?? options[0];
-
-  useEffect(() => {
-    if (!open) return;
-    const handleClickOutside = (event: MouseEvent) => {
-      if (!containerRef.current) return;
-      if (!containerRef.current.contains(event.target as Node)) setOpen(false);
-    };
-    document.addEventListener('mousedown', handleClickOutside);
-    return () => document.removeEventListener('mousedown', handleClickOutside);
-  }, [open]);
-
-  return (
-    <div ref={containerRef} style={{ position: 'relative' }}>
-      <button
-        type="button"
-        className="input"
-        disabled={disabled}
-        onClick={() => setOpen((prev) => !prev)}
-        aria-label={ariaLabel}
-        aria-haspopup="listbox"
-        aria-expanded={open}
-        style={{
-          display: 'flex',
-          alignItems: 'center',
-          justifyContent: 'space-between',
-          gap: 8,
-          cursor: disabled ? 'not-allowed' : 'pointer',
-          textAlign: 'left',
-          width: '100%',
-          appearance: 'none',
-        }}
-      >
-        <span style={{ color: 'var(--text-primary)', fontWeight: 500 }}>
-          {selectedOption?.label ?? ''}
-        </span>
-        <IconChevronDown size={16} style={{ opacity: 0.6, flex: '0 0 auto' }} />
-      </button>
-
-      {open && !disabled && (
-        <div
-          role="listbox"
-          aria-label={ariaLabel}
-          style={{
-            position: 'absolute',
-            top: 'calc(100% + 6px)',
-            left: 0,
-            right: 0,
-            zIndex: 1000,
-            background: 'var(--bg-primary)',
-            border: '1px solid var(--border-color)',
-            borderRadius: 12,
-            padding: 6,
-            boxShadow: 'var(--shadow)',
-            display: 'flex',
-            flexDirection: 'column',
-            gap: 6,
-            maxHeight: 260,
-            overflowY: 'auto',
-          }}
-        >
-          {options.map((opt) => {
-            const active = opt.value === value;
-            return (
-              <button
-                key={opt.value}
-                type="button"
-                role="option"
-                aria-selected={active}
-                onClick={() => {
-                  onChange(opt.value);
-                  setOpen(false);
-                }}
-                style={{
-                  padding: '10px 12px',
-                  borderRadius: 10,
-                  border: active
-                    ? '1px solid rgba(139, 134, 128, 0.5)'
-                    : '1px solid var(--border-color)',
-                  background: active ? 'rgba(139, 134, 128, 0.12)' : 'var(--bg-primary)',
-                  color: 'var(--text-primary)',
-                  cursor: 'pointer',
-                  textAlign: 'left',
-                  fontWeight: 600,
-                }}
-              >
-                {opt.label}
-              </button>
-            );
-          })}
-        </div>
-      )}
-    </div>
-  );
-}
-
 function ApiKeysCardEditor({
   value,
   disabled,
@@ -530,7 +416,7 @@ function PayloadRulesEditor({
               >
                 {protocolFirst ? (
                   <>
-                    <ToastSelect
+                    <Select
                       value={model.protocol ?? ''}
                       options={protocolOptions}
                       disabled={disabled}
@@ -558,7 +444,7 @@ function PayloadRulesEditor({
                       onChange={(e) => updateModel(ruleIndex, modelIndex, { name: e.target.value })}
                       disabled={disabled}
                     />
-                    <ToastSelect
+                    <Select
                       value={model.protocol ?? ''}
                       options={protocolOptions}
                       disabled={disabled}
@@ -600,7 +486,7 @@ function PayloadRulesEditor({
                   onChange={(e) => updateParam(ruleIndex, paramIndex, { path: e.target.value })}
                   disabled={disabled}
                 />
-                <ToastSelect
+                <Select
                   value={param.valueType}
                   options={payloadValueTypeOptions}
                   disabled={disabled}
@@ -743,7 +629,7 @@ function PayloadFilterRulesEditor({
                   onChange={(e) => updateModel(ruleIndex, modelIndex, { name: e.target.value })}
                   disabled={disabled}
                 />
-                <ToastSelect
+                <Select
                   value={model.protocol ?? ''}
                   options={protocolOptions}
                   disabled={disabled}
@@ -996,7 +882,7 @@ export function VisualConfigEditor({ values, disabled = false, onChange }: Visua
             />
             <div className="form-group">
               <label>{t('config_management.visual.sections.network.routing_strategy')}</label>
-              <ToastSelect
+              <Select
                 value={values.routingStrategy}
                 options={[
                   { value: 'round-robin', label: t('config_management.visual.sections.network.strategy_round_robin') },
diff --git a/src/components/ui/Select.module.scss b/src/components/ui/Select.module.scss
index 0fbba01..a0544ef 100644
--- a/src/components/ui/Select.module.scss
+++ b/src/components/ui/Select.module.scss
@@ -4,6 +4,9 @@
   position: relative;
   display: inline-flex;
   align-items: center;
+}
+
+.wrapFullWidth {
   width: 100%;
 }
 
diff --git a/src/components/ui/Select.tsx b/src/components/ui/Select.tsx
index 3b1e04e..817fea5 100644
--- a/src/components/ui/Select.tsx
+++ b/src/components/ui/Select.tsx
@@ -9,37 +9,56 @@ export interface SelectOption {
 
 interface SelectProps {
   value: string;
-  options: SelectOption[];
+  options: ReadonlyArray<SelectOption>;
   onChange: (value: string) => void;
   placeholder?: string;
   className?: string;
+  disabled?: boolean;
+  ariaLabel?: string;
+  fullWidth?: boolean;
 }
 
-export function Select({ value, options, onChange, placeholder, className }: SelectProps) {
+export function Select({
+  value,
+  options,
+  onChange,
+  placeholder,
+  className,
+  disabled = false,
+  ariaLabel,
+  fullWidth = true
+}: SelectProps) {
   const [open, setOpen] = useState(false);
   const wrapRef = useRef<HTMLDivElement | null>(null);
 
   useEffect(() => {
-    if (!open) return;
+    if (!open || disabled) return;
     const handleClickOutside = (event: MouseEvent) => {
       if (!wrapRef.current?.contains(event.target as Node)) setOpen(false);
     };
     document.addEventListener('mousedown', handleClickOutside);
     return () => document.removeEventListener('mousedown', handleClickOutside);
-  }, [open]);
+  }, [disabled, open]);
+
+  const isOpen = open && !disabled;
 
   const selected = options.find((o) => o.value === value);
   const displayText = selected?.label ?? placeholder ?? '';
   const isPlaceholder = !selected && placeholder;
 
   return (
-    <div className={`${styles.wrap} ${className ?? ''}`} ref={wrapRef}>
+    <div
+      className={`${styles.wrap} ${fullWidth ? styles.wrapFullWidth : ''} ${className ?? ''}`}
+      ref={wrapRef}
+    >
       <button
         type="button"
         className={styles.trigger}
-        onClick={() => setOpen((prev) => !prev)}
+        onClick={disabled ? undefined : () => setOpen((prev) => !prev)}
         aria-haspopup="listbox"
-        aria-expanded={open}
+        aria-expanded={isOpen}
+        aria-label={ariaLabel}
+        disabled={disabled}
       >
         <span className={`${styles.triggerText} ${isPlaceholder ? styles.placeholder : ''}`}>
           {displayText}
@@ -48,8 +67,8 @@ export function Select({ value, options, onChange, placeholder, className }: Sel
           <IconChevronDown size={14} />
         </span>
       </button>
-      {open && (
-        <div className={styles.dropdown} role="listbox">
+      {isOpen && (
+        <div className={styles.dropdown} role="listbox" aria-label={ariaLabel}>
           {options.map((opt) => {
             const active = opt.value === value;
             return (
diff --git a/src/pages/UsagePage.module.scss b/src/pages/UsagePage.module.scss
index 6b597f9..a2ffadb 100644
--- a/src/pages/UsagePage.module.scss
+++ b/src/pages/UsagePage.module.scss
@@ -44,100 +44,8 @@
   font-weight: 600;
 }
 
-.timeRangeSelectWrap {
-  position: relative;
-  display: inline-flex;
-  align-items: center;
-}
-
-.timeRangeSelect {
-  display: inline-flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: 8px;
+.timeRangeSelectControl {
   min-width: 164px;
-  height: 40px;
-  padding: 0 12px;
-  border: 1px solid var(--border-color);
-  border-radius: $radius-md;
-  background-color: var(--bg-primary);
-  box-shadow: var(--shadow);
-  color: var(--text-primary);
-  font-size: 13px;
-  font-weight: 500;
-  cursor: pointer;
-  appearance: none;
-  text-align: left;
-
-  &:hover {
-    border-color: var(--border-hover);
-  }
-
-  &:focus {
-    outline: none;
-    box-shadow: var(--shadow), 0 0 0 3px rgba($primary-color, 0.18);
-  }
-
-  &[aria-expanded='true'] {
-    border-color: var(--primary-color);
-    box-shadow: var(--shadow), 0 0 0 3px rgba($primary-color, 0.18);
-  }
-}
-
-.timeRangeSelectedText {
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-.timeRangeSelectIcon {
-  display: inline-flex;
-  color: var(--text-secondary);
-  flex-shrink: 0;
-  transition: transform 0.2s ease;
-
-  [aria-expanded='true'] > & {
-    transform: rotate(180deg);
-  }
-}
-
-.timeRangeDropdown {
-  position: absolute;
-  top: calc(100% + 6px);
-  left: 0;
-  right: 0;
-  z-index: 1000;
-  background: var(--bg-primary);
-  border: 1px solid var(--border-color);
-  border-radius: $radius-lg;
-  padding: 6px;
-  box-shadow: var(--shadow-lg);
-  display: flex;
-  flex-direction: column;
-  gap: 4px;
-}
-
-.timeRangeOption {
-  padding: 8px 12px;
-  border-radius: $radius-md;
-  border: 1px solid transparent;
-  background: transparent;
-  color: var(--text-primary);
-  cursor: pointer;
-  text-align: left;
-  font-size: 13px;
-  font-weight: 500;
-  transition: background-color 0.15s ease, border-color 0.15s ease;
-
-  &:hover {
-    background: var(--bg-secondary);
-  }
-}
-
-.timeRangeOptionActive {
-  border-color: rgba($primary-color, 0.5);
-  background: rgba($primary-color, 0.1);
-  font-weight: 600;
 }
 
 .pageTitle {
diff --git a/src/pages/UsagePage.tsx b/src/pages/UsagePage.tsx
index 76c0314..3502f6e 100644
--- a/src/pages/UsagePage.tsx
+++ b/src/pages/UsagePage.tsx
@@ -1,4 +1,4 @@
-import { useState, useMemo, useCallback, useEffect, useRef } from 'react';
+import { useState, useMemo, useCallback, useEffect } from 'react';
 import { useTranslation } from 'react-i18next';
 import {
   Chart as ChartJS,
@@ -13,7 +13,7 @@ import {
 } from 'chart.js';
 import { Button } from '@/components/ui/Button';
 import { LoadingSpinner } from '@/components/ui/LoadingSpinner';
-import { IconChevronDown } from '@/components/ui/icons';
+import { Select } from '@/components/ui/Select';
 import { useMediaQuery } from '@/hooks/useMediaQuery';
 import { useHeaderRefresh } from '@/hooks/useHeaderRefresh';
 import { useThemeStore, useConfigStore } from '@/stores';
@@ -120,19 +120,6 @@ export function UsagePage() {
   const isDark = resolvedTheme === 'dark';
   const config = useConfigStore((state) => state.config);
 
-  // Time range dropdown
-  const [timeRangeOpen, setTimeRangeOpen] = useState(false);
-  const timeRangeRef = useRef<HTMLDivElement | null>(null);
-
-  useEffect(() => {
-    if (!timeRangeOpen) return;
-    const handleClickOutside = (event: MouseEvent) => {
-      if (!timeRangeRef.current?.contains(event.target as Node)) setTimeRangeOpen(false);
-    };
-    document.addEventListener('mousedown', handleClickOutside);
-    return () => document.removeEventListener('mousedown', handleClickOutside);
-  }, [timeRangeOpen]);
-
   // Data hook
   const {
     usage,
@@ -156,6 +143,15 @@ export function UsagePage() {
   const [chartLines, setChartLines] = useState<string[]>(loadChartLines);
   const [timeRange, setTimeRange] = useState<UsageTimeRange>(loadTimeRange);
 
+  const timeRangeOptions = useMemo(
+    () =>
+      TIME_RANGE_OPTIONS.map((opt) => ({
+        value: opt.value,
+        label: t(opt.labelKey)
+      })),
+    [t]
+  );
+
   const filteredUsage = useMemo(
     () => (usage ? filterUsageByTimeRange(usage, timeRange) : null),
     [usage, timeRange]
@@ -238,44 +234,14 @@ export function UsagePage() {
         <div className={styles.headerActions}>
           <div className={styles.timeRangeGroup}>
             <span className={styles.timeRangeLabel}>{t('usage_stats.range_filter')}</span>
-            <div className={styles.timeRangeSelectWrap} ref={timeRangeRef}>
-              <button
-                type="button"
-                className={styles.timeRangeSelect}
-                onClick={() => setTimeRangeOpen((prev) => !prev)}
-                aria-haspopup="listbox"
-                aria-expanded={timeRangeOpen}
-              >
-                <span className={styles.timeRangeSelectedText}>
-                  {t(TIME_RANGE_OPTIONS.find((o) => o.value === timeRange)?.labelKey ?? 'usage_stats.range_24h')}
-                </span>
-                <span className={styles.timeRangeSelectIcon} aria-hidden="true">
-                  <IconChevronDown size={14} />
-                </span>
-              </button>
-              {timeRangeOpen && (
-                <div className={styles.timeRangeDropdown} role="listbox" aria-label={t('usage_stats.range_filter')}>
-                  {TIME_RANGE_OPTIONS.map((opt) => {
-                    const active = opt.value === timeRange;
-                    return (
-                      <button
-                        key={opt.value}
-                        type="button"
-                        role="option"
-                        aria-selected={active}
-                        className={`${styles.timeRangeOption} ${active ? styles.timeRangeOptionActive : ''}`}
-                        onClick={() => {
-                          setTimeRange(opt.value);
-                          setTimeRangeOpen(false);
-                        }}
-                      >
-                        {t(opt.labelKey)}
-                      </button>
-                    );
-                  })}
-                </div>
-              )}
-            </div>
+            <Select
+              value={timeRange}
+              options={timeRangeOptions}
+              onChange={(value) => setTimeRange(value as UsageTimeRange)}
+              className={styles.timeRangeSelectControl}
+              ariaLabel={t('usage_stats.range_filter')}
+              fullWidth={false}
+            />
           </div>
           <Button
             variant="secondary"