diff --git a/frontend/src/components/ui/NumberInput.tsx b/frontend/src/components/ui/NumberInput.tsx
new file mode 100644
index 0000000..17aa280
--- /dev/null
+++ b/frontend/src/components/ui/NumberInput.tsx
@@ -0,0 +1,22 @@
+interface Props {
+  value: number
+  min?: number
+  max?: number
+  onChange: (value: number) => void
+  className?: string
+  style?: React.CSSProperties
+  'aria-label'?: string
+}
+
+export default function NumberInput({ value, min = 0, max = 999, onChange, className, style, 'aria-label': ariaLabel }: Props) {
+  const clamp = (n: number) => Math.min(max, Math.max(min, n))
+
+  return (
+    <div className={`cv-number ${className || ''}`} style={style}
+      role="spinbutton" aria-valuenow={value} aria-valuemin={min} aria-valuemax={max} aria-label={ariaLabel}>
+      <button className="cv-number-btn" onClick={() => onChange(clamp(value - 1))} type="button" disabled={value <= min} aria-label="Decrease">-</button>
+      <span className="cv-number-value">{value}</span>
+      <button className="cv-number-btn" onClick={() => onChange(clamp(value + 1))} type="button" disabled={value >= max} aria-label="Increase">+</button>
+    </div>
+  )
+}
diff --git a/frontend/src/components/ui/Select.tsx b/frontend/src/components/ui/Select.tsx
new file mode 100644
index 0000000..edb0aa8
--- /dev/null
+++ b/frontend/src/components/ui/Select.tsx
@@ -0,0 +1,83 @@
+import { useState, useRef, useEffect, useCallback, useId } from 'react'
+import { createPortal } from 'react-dom'
+import { IconChevronDownFilled } from '@tabler/icons-react'
+
+interface Option {
+  value: string | number
+  label: string
+}
+
+interface Props {
+  value: string | number
+  options: Option[]
+  onChange: (value: string | number) => void
+  className?: string
+  style?: React.CSSProperties
+}
+
+export default function Select({ value, options, onChange, className, style }: Props) {
+  const [open, setOpen] = useState(false)
+  const triggerRef = useRef<HTMLButtonElement>(null)
+  const dropRef = useRef<HTMLDivElement>(null)
+  const [pos, setPos] = useState({ top: 0, left: 0, width: 0 })
+  const listboxId = useId()
+
+  const selected = options.find(o => String(o.value) === String(value))
+
+  const updatePos = useCallback(() => {
+    if (!triggerRef.current) return
+    const rect = triggerRef.current.getBoundingClientRect()
+    setPos({ top: rect.bottom, left: rect.left, width: rect.width })
+  }, [])
+
+  useEffect(() => {
+    if (!open) return
+    updatePos()
+    function onDown(e: MouseEvent) {
+      const target = e.target
+      if (target instanceof Node && dropRef.current && !dropRef.current.contains(target) &&
+          triggerRef.current && !triggerRef.current.contains(target)) {
+        setOpen(false)
+      }
+    }
+    function onKey(e: KeyboardEvent) {
+      if (e.key === 'Escape') setOpen(false)
+    }
+    window.addEventListener('scroll', updatePos, true)
+    document.addEventListener('mousedown', onDown)
+    document.addEventListener('keydown', onKey)
+    return () => {
+      window.removeEventListener('scroll', updatePos, true)
+      document.removeEventListener('mousedown', onDown)
+      document.removeEventListener('keydown', onKey)
+    }
+  }, [open, updatePos])
+
+  return (
+    <div className={`cv-select ${className || ''}`} style={style}>
+      <button className="cv-select-trigger" ref={triggerRef} onClick={() => setOpen(!open)} type="button"
+        aria-haspopup="listbox" aria-expanded={open} aria-controls={open ? listboxId : undefined}>
+        <span>{selected?.label || String(value)}</span>
+        <IconChevronDownFilled size={10} style={{ transform: open ? 'rotate(180deg)' : 'none', transition: 'transform 150ms' }} />
+      </button>
+      {open && createPortal(
+        <div className="cv-select-dropdown" ref={dropRef} id={listboxId} role="listbox"
+          style={{ top: pos.top, left: pos.left, minWidth: pos.width }}>
+          {options.map(o => (
+            <button
+              key={String(o.value)}
+              role="option"
+              aria-selected={String(o.value) === String(value)}
+              className={`cv-select-option ${String(o.value) === String(value) ? 'cv-select-option-active' : ''}`}
+              onClick={() => { onChange(o.value); setOpen(false) }}
+              type="button"
+            >
+              {o.label}
+            </button>
+          ))}
+        </div>,
+        document.body,
+      )}
+    </div>
+  )
+}