diff --git a/components/search/SearchOverlay.tsx b/components/search/SearchOverlay.tsx
index d58d9e9..bd1b000 100644
--- a/components/search/SearchOverlay.tsx
+++ b/components/search/SearchOverlay.tsx
@@ -1,4 +1,167 @@
 'use client'
+
+import { useState, useEffect, useRef, useCallback } from 'react'
+import { useRouter } from 'next/navigation'
+import { Search, X } from 'lucide-react'
+import type { Article } from '@/lib/types'
+
 export default function SearchOverlay() {
-  return null
+  const [open, setOpen] = useState(false)
+  const [query, setQuery] = useState('')
+  const [results, setResults] = useState<Article[]>([])
+  const [activeIndex, setActiveIndex] = useState(0)
+  const [loading, setLoading] = useState(false)
+  const inputRef = useRef<HTMLInputElement>(null)
+  const debounceRef = useRef<ReturnType<typeof setTimeout> | null>(null)
+  const router = useRouter()
+
+  const close = useCallback(() => {
+    setOpen(false)
+    setQuery('')
+    setResults([])
+    setActiveIndex(0)
+  }, [])
+
+  useEffect(() => {
+    function onKeyDown(e: KeyboardEvent) {
+      if (e.key === 'k' && (e.metaKey || e.ctrlKey)) {
+        e.preventDefault()
+        setOpen(true)
+      }
+      if (e.key === 'Escape') close()
+    }
+    function onOpenSearch() {
+      setOpen(true)
+    }
+    window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('kotobane:open-search', onOpenSearch)
+    return () => {
+      window.removeEventListener('keydown', onKeyDown)
+      window.removeEventListener('kotobane:open-search', onOpenSearch)
+    }
+  }, [close])
+
+  useEffect(() => {
+    if (open) setTimeout(() => inputRef.current?.focus(), 50)
+  }, [open])
+
+  useEffect(() => {
+    if (!query.trim()) {
+      setResults([])
+      return
+    }
+    if (debounceRef.current) clearTimeout(debounceRef.current)
+    debounceRef.current = setTimeout(async () => {
+      setLoading(true)
+      try {
+        const params = new URLSearchParams({
+          search: query.trim(),
+          'filter[status][_eq]': 'published',
+          limit: '8',
+          fields: 'id,title,slug,category.slug,category.name',
+          access_token: process.env.NEXT_PUBLIC_DIRECTUS_TOKEN ?? '',
+        })
+        const res = await fetch(
+          `${process.env.NEXT_PUBLIC_DIRECTUS_URL}/items/articles?${params}`
+        )
+        const data = await res.json()
+        setResults(data.data ?? [])
+        setActiveIndex(0)
+      } finally {
+        setLoading(false)
+      }
+    }, 300)
+    return () => {
+      if (debounceRef.current) clearTimeout(debounceRef.current)
+    }
+  }, [query])
+
+  function navigate(article: Article) {
+    router.push(`/${article.category.slug}/${article.slug}`)
+    close()
+  }
+
+  function onKeyDown(e: React.KeyboardEvent) {
+    if (e.key === 'ArrowDown') {
+      e.preventDefault()
+      setActiveIndex((i) => Math.min(i + 1, results.length - 1))
+    } else if (e.key === 'ArrowUp') {
+      e.preventDefault()
+      setActiveIndex((i) => Math.max(i - 1, 0))
+    } else if (e.key === 'Enter' && results[activeIndex]) {
+      navigate(results[activeIndex])
+    }
+  }
+
+  if (!open) return null
+
+  return (
+    <div
+      className="fixed inset-0 z-50 flex items-start justify-center pt-[15vh]"
+      onClick={close}
+    >
+      <div className="absolute inset-0 bg-black/60" />
+
+      <div
+        className="relative w-full max-w-[560px] mx-4 bg-bg-elevated border border-border rounded-lg shadow-xl overflow-hidden"
+        onClick={(e) => e.stopPropagation()}
+      >
+        <div className="flex items-center gap-3 px-4 py-3 border-b border-border">
+          <Search size={16} className="text-text-muted shrink-0" />
+          <input
+            ref={inputRef}
+            type="text"
+            placeholder="Search articles…"
+            value={query}
+            onChange={(e) => setQuery(e.target.value)}
+            onKeyDown={onKeyDown}
+            className="flex-1 bg-transparent text-sm text-text-primary placeholder:text-text-disabled outline-none"
+          />
+          {query && (
+            <button
+              onClick={() => setQuery('')}
+              className="text-text-muted hover:text-text-secondary"
+              aria-label="Clear search"
+            >
+              <X size={14} />
+            </button>
+          )}
+        </div>
+
+        {results.length > 0 && (
+          <ul>
+            {results.map((article, i) => (
+              <li key={article.id}>
+                <button
+                  onClick={() => navigate(article)}
+                  className={`w-full text-left px-4 py-3 flex flex-col gap-0.5 transition-colors ${
+                    i === activeIndex ? 'bg-bg-card' : 'hover:bg-bg-card'
+                  }`}
+                >
+                  <span className="text-[10px] font-semibold text-text-muted uppercase tracking-widest">
+                    {article.category.name}
+                  </span>
+                  <span className="text-sm text-text-primary">{article.title}</span>
+                </button>
+              </li>
+            ))}
+          </ul>
+        )}
+
+        {loading && (
+          <p className="px-4 py-3 text-sm text-text-muted">Searching…</p>
+        )}
+
+        {!loading && query.trim() && results.length === 0 && (
+          <p className="px-4 py-3 text-sm text-text-muted">No results for &quot;{query}&quot;</p>
+        )}
+
+        <div className="flex items-center gap-4 px-4 py-2 border-t border-border">
+          <span className="text-[10px] text-text-disabled">↑↓ navigate</span>
+          <span className="text-[10px] text-text-disabled">↵ open</span>
+          <span className="text-[10px] text-text-disabled">esc close</span>
+        </div>
+      </div>
+    </div>
+  )
 }