백테스팅 화면 검색기능 추가

frontend/src/styles/backtestDashboard.css

@@ -1115,6 +1115,73 @@
 
 /* ── 목록 카드 (참조 UI) ── */
 
+/* ── 검색 입력창 ──────────────────────────────────────────────────── */
+.btd-exec-search {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 8px 10px;
+  border: 1px solid var(--btd-divider);
+  border-radius: 7px;
+  background: var(--btd-surface);
+  flex-shrink: 0;
+  transition: border-color 0.15s;
+}
+
+.btd-exec-search:focus-within {
+  border-color: color-mix(in srgb, var(--btd-gold) 55%, var(--btd-divider));
+  box-shadow: 0 0 0 1px color-mix(in srgb, var(--btd-gold) 20%, transparent);
+}
+
+.btd-exec-search-icon {
+  font-size: 0.65rem;
+  opacity: 0.6;
+  flex-shrink: 0;
+}
+
+.btd-exec-search-input {
+  flex: 1;
+  border: none;
+  background: transparent;
+  color: var(--se-text, var(--text));
+  font-size: 0.78rem;
+  outline: none;
+  min-width: 0;
+  line-height: 1.5;
+}
+
+.btd-exec-search-input::placeholder {
+  color: var(--se-text-muted, var(--text2));
+  opacity: 0.7;
+}
+
+.btd-exec-search-clear {
+  border: none;
+  background: transparent;
+  color: var(--se-text-muted, var(--text2));
+  font-size: 0.65rem;
+  cursor: pointer;
+  padding: 1px 3px;
+  border-radius: 4px;
+  line-height: 1;
+  flex-shrink: 0;
+  opacity: 0.7;
+}
+
+.btd-exec-search-clear:hover {
+  opacity: 1;
+  background: var(--btd-gold-bg);
+  color: var(--btd-gold);
+}
+
+.btd-exec-search-count {
+  font-size: 0.62rem;
+  color: var(--se-text-muted, var(--text2));
+  padding: 0 2px 4px;
+  flex-shrink: 0;
+  text-align: right;
+}
+
 .btd-exec-filters {
   display: flex;
   gap: 4px;