feat: add search bar, auto-tour, and OpenStreetMap embed in side panel

src/styles.css

@@ -105,6 +105,121 @@ html, body {
   color: var(--ink-3);
 }
 
+/* ---- tour button state ---- */
+#tour-btn.is-playing {
+  background: var(--accent);
+  color: #1a1206;
+  border-color: var(--accent);
+}
+#tour-btn.is-playing:hover {
+  background: #e6b06a;
+  border-color: #e6b06a;
+}
+
+/* ---- search bar ---- */
+.search-bar {
+  position: absolute;
+  top: 18px;
+  left: 18px;
+  z-index: 6;
+  display: flex;
+  align-items: center;
+  background: rgba(10, 14, 22, 0.78);
+  backdrop-filter: blur(8px);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  padding: 6px 12px;
+  width: 360px;
+  max-width: calc(100% - 36px);
+  font-size: 13px;
+  color: var(--ink-1);
+}
+
+.search-bar:focus-within {
+  border-color: rgba(214, 160, 92, 0.55);
+  box-shadow: 0 0 0 3px rgba(214, 160, 92, 0.15);
+}
+
+.search-icon {
+  margin-right: 8px;
+  opacity: 0.55;
+  font-size: 13px;
+}
+
+#search-input {
+  background: transparent;
+  border: none;
+  outline: none;
+  color: var(--ink-0);
+  font: inherit;
+  font-size: 13.5px;
+  flex: 1;
+  padding: 6px 0;
+  min-width: 0;
+}
+
+#search-input::placeholder {
+  color: var(--ink-3);
+}
+
+.search-clear {
+  background: transparent;
+  border: none;
+  color: var(--ink-3);
+  cursor: pointer;
+  font-size: 14px;
+  padding: 4px 6px;
+  border-radius: 6px;
+  margin-left: 4px;
+}
+.search-clear:hover { color: var(--ink-0); background: rgba(255,255,255,0.06); }
+
+.search-results {
+  position: absolute;
+  top: calc(100% + 6px);
+  left: 0;
+  right: 0;
+  list-style: none;
+  margin: 0;
+  padding: 6px;
+  background: rgba(10, 14, 22, 0.96);
+  backdrop-filter: blur(10px);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  max-height: 320px;
+  overflow-y: auto;
+  box-shadow: var(--shadow);
+}
+
+.search-results li {
+  padding: 9px 10px;
+  border-radius: 7px;
+  cursor: pointer;
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.search-results li:hover,
+.search-results li.is-active {
+  background: rgba(214, 160, 92, 0.14);
+}
+
+.search-results .name {
+  font-size: 13.5px;
+  color: var(--ink-0);
+  font-weight: 500;
+}
+.search-results .meta {
+  font-size: 11.5px;
+  color: var(--ink-3);
+}
+.search-results mark {
+  background: transparent;
+  color: var(--accent);
+  font-weight: 600;
+}
+
 .layout {
   flex: 1;
   display: grid;
@@ -319,6 +434,61 @@ html, body {
   color: var(--accent);
 }
 
+/* ---- map embed ---- */
+.map-wrap {
+  margin-bottom: 22px;
+}
+
+.map-wrap .map-label {
+  font-size: 11px;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--ink-3);
+  margin-bottom: 6px;
+}
+
+.map-frame {
+  width: 100%;
+  height: 220px;
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  overflow: hidden;
+  background: var(--bg-2);
+}
+
+.map-frame iframe {
+  width: 100%;
+  height: 100%;
+  border: 0;
+  display: block;
+  filter: invert(0.92) hue-rotate(180deg) brightness(0.95) saturate(0.7);
+}
+
+.map-links {
+  display: flex;
+  gap: 8px;
+  margin-top: 8px;
+}
+
+.map-link {
+  flex: 1;
+  text-align: center;
+  font-size: 12px;
+  color: var(--ink-1);
+  text-decoration: none;
+  background: var(--bg-2);
+  border: 1px solid var(--border);
+  padding: 7px 10px;
+  border-radius: 8px;
+  transition: background 0.15s, border-color 0.15s;
+}
+
+.map-link:hover {
+  background: rgba(214, 160, 92, 0.14);
+  border-color: rgba(214, 160, 92, 0.45);
+  color: var(--ink-0);
+}
+
 .photos {
   display: grid;
   grid-template-columns: 1fr 1fr;