TOOLTIPS: extract .tt base to _tooltips.scss + natus element/planet title colours

- New _tooltips.scss: .token-tooltip/.tt base block extracted from _wallet-tokens.scss
- core.scss: import order …billboard → tooltips → game-kit → wallet-tokens
- _natus.scss: .tt-title--au/ag/…/pu (--six* dark, --pri* light) + .tt-title--el-* for element ring (--pri* dark, --ter* light) via body[class*="-light"] selector
- natus-wheel.js: element tooltip title switched from inline style to .tt-title--el-{key} CSS class; PLANET_ELEMENTS map drives .tt-title--{el} class on planet titles
- _game-kit.scss: kit bag .tt child font-size rules added (1rem title, 0.75rem desc/shoptalk/expiry)
- CLAUDE.md: SCSS import order updated

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/static_src/scss/_tooltips.scss

@@ -0,0 +1,61 @@
+// ── Tooltip base styles ───────────────────────────────────────────────────────
+// Shared by wallet tokens, game-kit kit bag, and natus wheel tooltips.
+// Portal tooltips (#id_tooltip_portal, #id_natus_tooltip) are position:fixed
+// and override z-index; inline .tt cards use position:absolute within their
+// parent token container.
+
+.token-tooltip,
+.tt {
+    display: none;
+    width: 16rem;
+    max-width: 16rem;
+    white-space: normal;
+    background-color: rgba(var(--tooltip-bg), 0.75);
+    backdrop-filter: blur(6px);
+    border: 0.1rem solid rgba(var(--secUser), 0.5);
+    color: rgba(var(--secUser), 1);
+    padding: 0.5rem 0.75rem;
+    border-radius: 0.5rem;
+    z-index: 10;
+    font-size: 0.875rem;
+
+    h4 {
+        font-size: 0.95rem;
+        margin: 0 0 0.3rem 0;
+        color: rgba(var(--terUser), 1);
+        display: flex;
+        justify-content: space-between;
+        align-items: baseline;
+        gap: 0.5rem;
+
+        .token-count {
+            font-size: 0.75rem;
+            opacity: 0.65;
+            font-weight: normal;
+            flex-shrink: 0;
+        }
+    }
+
+    p {
+        margin: 0 0 0.2rem 0;
+
+        &.expiry {
+            color: rgba(var(--priRd), 1);
+        }
+
+        &.availability {
+            color: rgba(var(--priRd), 1);
+        }
+
+        &.stock-version {
+            font-weight: 700;
+            color: rgba(var(--terUser), 1);
+        }
+    }
+
+    small {
+        display: block;
+        font-size: 0.6rem;
+        opacity: 0.6;
+    }
+}