feat: add debounced search dropdown with quick results

static/css/style.css

@@ -76,6 +76,11 @@ header {
   text-decoration: underline;
 }
 
+.header-search-wrapper {
+  margin-left: auto;
+  position: relative;
+}
+
 .header-search {
   margin-left: auto;
 }
@@ -99,6 +104,108 @@ header {
   color: var(--text-muted);
 }
 
+/* Search Dropdown */
+.search-dropdown {
+  position: absolute;
+  top: 100%;
+  right: 0;
+  width: 320px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-top: none;
+  margin-top: -1px;
+  max-height: 480px;
+  overflow-y: auto;
+  z-index: 1000;
+}
+
+.search-results {
+  display: flex;
+  flex-direction: column;
+}
+
+.search-results-title {
+  padding: 8px 12px;
+  font-size: 11px;
+  font-weight: 600;
+  color: var(--text-muted);
+  text-transform: uppercase;
+  border-bottom: 1px solid var(--border);
+}
+
+.search-result-item {
+  display: flex;
+  gap: 10px;
+  padding: 8px 12px;
+  border-bottom: 1px solid var(--border);
+  text-decoration: none;
+  color: inherit;
+  transition: background 0.15s;
+}
+
+.search-result-item:hover {
+  background: var(--surface-hover);
+}
+
+.search-result-thumb {
+  width: 40px;
+  height: 60px;
+  object-fit: cover;
+  border: 1px solid var(--border);
+  flex-shrink: 0;
+}
+
+.search-result-no-image {
+  width: 40px;
+  height: 60px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: var(--surface-hover);
+  border: 1px solid var(--border);
+  font-size: 10px;
+  color: var(--text-muted);
+  flex-shrink: 0;
+}
+
+.search-result-info {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  min-width: 0;
+  flex: 1;
+}
+
+.search-result-title {
+  font-size: 12px;
+  color: var(--text);
+  font-weight: 500;
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+}
+
+.search-result-type {
+  font-size: 11px;
+  color: var(--text-muted);
+}
+
+.search-result-view-all {
+  display: block;
+  padding: 10px 12px;
+  text-align: center;
+  color: var(--link);
+  font-size: 12px;
+  border-top: 1px solid var(--border);
+  text-decoration: none;
+}
+
+.search-result-view-all:hover {
+  background: var(--surface-hover);
+  text-decoration: underline;
+}
+
 /* Main */
 main {
   padding: 16px;

static/js/search.js

@@ -0,0 +1,62 @@
+let searchTimeout;
+const searchInput = document.getElementById('search-input');
+const searchDropdown = document.getElementById('search-dropdown');
+
+if (searchInput) {
+  searchInput.addEventListener('input', function(e) {
+    clearTimeout(searchTimeout);
+    const query = e.target.value.trim();
+
+    if (query.length < 2) {
+      searchDropdown.innerHTML = '';
+      return;
+    }
+
+    searchTimeout = setTimeout(() => {
+      fetch('/api/search-quick?q=' + encodeURIComponent(query))
+        .then(res => res.json())
+        .then(results => {
+          if (!results || results.length === 0) {
+            searchDropdown.innerHTML = '';
+            return;
+          }
+
+          let html = '<div class="search-results">';
+          html += '<div class="search-results-title">Anime</div>';
+          results.forEach(r => {
+            html += `
+              <a href="/anime/${r.id}" class="search-result-item">
+                ${r.image ? `<img src="${r.image}" alt="${r.title}" class="search-result-thumb" />` : '<div class="search-result-no-image">no image</div>'}
+                <div class="search-result-info">
+                  <div class="search-result-title">${escapeHtml(r.title)}</div>
+                  <div class="search-result-type">${r.type}</div>
+                </div>
+              </a>
+            `;
+          });
+          html += `<a href="/search?q=${encodeURIComponent(query)}" class="search-result-view-all">View all results for ${escapeHtml(query)}</a>`;
+          html += '</div>';
+          searchDropdown.innerHTML = html;
+        })
+        .catch(err => console.error('Search error:', err));
+    }, 300);
+  });
+
+  searchInput.addEventListener('blur', () => {
+    setTimeout(() => {
+      searchDropdown.innerHTML = '';
+    }, 200);
+  });
+
+  document.addEventListener('click', (e) => {
+    if (!e.target.closest('.header-search-wrapper')) {
+      searchDropdown.innerHTML = '';
+    }
+  });
+}
+
+function escapeHtml(text) {
+  const div = document.createElement('div');
+  div.textContent = text;
+  return div.innerHTML;
+}