fix(ptica): drawer modal a11y (focus-trap + restore) + polish

PticaDrawer: proper modal focus management —
- focus-trap: Tab/Shift+Tab wrap inside the dialog (focusables re-queried per
  Tab so it survives lazy panels/sub-tabs), focus-already-outside pulled back in;
- focus-restore: the trigger element is captured on open and re-focused on close
  (guards null + detached node);
- onClose held in a ref so the effect depends on [open] only — fixes focus
  thrashing when the host's URL/searchParams change mid-open.
Esc/scrim close, body-scroll-lock, role=dialog/aria-modal preserved.

Cleanups (code-review follow-ups):
- MassingScene: drop duplicate initial mass build (floors/sections effect owns
  it); corrected the effect-ordering comment.
- Static inline styles → CSS-module classes (scan/gauge/score/spaced rows).
- DrawerPrimitives: remove !important on .dtabActive via specificity
  (.dtabs button.dtabActive).
- Remove unused SoonCard component + its CSS.

tsc/lint/prettier clean; next build green (route bundled). ptica-only, no any.

frontend/src/app/site-finder/analysis/[cad]/ptica/ptica.module.css

@@ -329,6 +329,11 @@
   opacity: 0.45;
   cursor: not-allowed;
 }
+/* «Подробнее» pinned to the bottom-left of a flex-column card (scan / score). */
+.detailBtnScan {
+  margin-top: auto;
+  align-self: flex-start;
+}
 
 /* ===================== HERO GRID ===================== */
 .hero {
@@ -438,6 +443,11 @@
   align-items: center;
   gap: 6px;
 }
+/* compact, centred title above a radial gauge. */
+.cardTitleGauge {
+  font-size: 9.5px;
+  text-align: center;
+}
 .scoreStack {
   display: flex;
   flex-direction: column;
@@ -625,6 +635,13 @@
   margin-top: auto;
   align-self: flex-start;
 }
+/* Risks card centres its gauge; title stays left-aligned like the other cards. */
+.scanCardCentered {
+  align-items: center;
+}
+.scanCardCentered .cardTitle {
+  align-self: flex-start;
+}
 .emptyState {
   display: grid;
   place-items: center;
@@ -805,6 +822,10 @@
   font-size: 11px;
   padding: 3px 0;
 }
+/* sc-kvrow that sits below a table/segment block — adds top separation. */
+.scKvRowSpaced {
+  margin-top: 8px;
+}
 .scK {
   color: var(--text-muted);
 }
@@ -1575,29 +1596,6 @@
 .drawerLink:hover {
   text-decoration: underline;
 }
-.soonCard {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  gap: 9px;
-  text-align: center;
-  padding: 22px 16px;
-  border-style: dashed;
-}
-.soonCard p {
-  margin: 0;
-  font-size: 11px;
-  line-height: 1.5;
-  color: var(--text-soft);
-  max-width: 320px;
-}
-.roadmap {
-  font-size: 9px;
-  text-transform: uppercase;
-  letter-spacing: 0.08em;
-  color: var(--text-soft);
-}
-
 /* ===================== 3D MASSING SANDBOX (Three.js) ===================== */
 .massingWrap {
   display: flex;
@@ -1784,9 +1782,10 @@
 .dtabs button:hover {
   color: var(--text-muted);
 }
-.dtabActive {
-  color: var(--text-strong) !important;
-  border-bottom-color: var(--accent-cyan) !important;
+/* specific enough to beat `.dtabs button` without !important. */
+.dtabs button.dtabActive {
+  color: var(--text-strong);
+  border-bottom-color: var(--accent-cyan);
 }
 .dtabPanel {
   display: grid;

frontend/src/components/site-finder/ptica/BuildabilityGauge.tsx

@@ -41,10 +41,7 @@ export function BuildabilityGauge({ gauge, title }: Props) {
 
   return (
     <div className={styles.gaugePanel}>
-      <div
-        className={styles.cardTitle}
-        style={{ fontSize: "9.5px", textAlign: "center" }}
-      >
+      <div className={`${styles.cardTitle} ${styles.cardTitleGauge}`}>
         {title}
       </div>
       <div className={styles.gauge}>

frontend/src/components/site-finder/ptica/DevelopmentScan.tsx

@@ -69,17 +69,13 @@ export function DevelopmentScan({ analysis, onOpenDrawer }: Props) {
 
         <div
           id="risks"
-          className={`${styles.card} ${styles.scanCard}`}
-          style={{ alignItems: "center" }}
+          className={`${styles.card} ${styles.scanCard} ${styles.scanCardCentered}`}
         >
-          <h3 className={styles.cardTitle} style={{ alignSelf: "flex-start" }}>
-            Риски
-          </h3>
+          <h3 className={styles.cardTitle}>Риски</h3>
           <BuildabilityGauge gauge={riskGauge} title="Сводный риск" />
           <button
             type="button"
-            className={styles.detailBtn}
-            style={{ alignSelf: "flex-start", marginTop: "auto" }}
+            className={`${styles.detailBtn} ${styles.detailBtnScan}`}
             onClick={() => onOpenDrawer("risks")}
             title="Открыть детализацию"
           >

frontend/src/components/site-finder/ptica/InvestScoreBlock.tsx

@@ -72,7 +72,7 @@ export function InvestScoreBlock({
 
       <button
         type="button"
-        className={styles.detailBtn}
+        className={`${styles.detailBtn} ${styles.detailBtnScan}`}
         onClick={() => onOpenDrawer("potential")}
         title="Открыть расчёт ёмкости"
       >

frontend/src/components/site-finder/ptica/drawers/DrawerPrimitives.tsx

@@ -243,24 +243,6 @@ export function DrawerActions({ labels }: { labels: string[] }) {
   );
 }
 
-// ── Placeholder card (СКОРО) ──────────────────────────────────────────────────
-
-export function SoonCard({
-  text,
-  roadmap,
-}: {
-  text: string;
-  roadmap?: string;
-}) {
-  return (
-    <div className={`${styles.card} ${styles.soonCard}`}>
-      <div className={styles.soon}>СКОРО</div>
-      <p>{text}</p>
-      {roadmap && <div className={styles.roadmap}>{roadmap}</div>}
-    </div>
-  );
-}
-
 // ── Sub-tabs (.dtabs / .dtab-panel) ───────────────────────────────────────────
 
 export interface DrawerTab {

frontend/src/components/site-finder/ptica/drawers/PticaDrawer.tsx

@@ -10,6 +10,13 @@
  *  - the close button is focused on open (a11y),
  *  - body scroll is locked while open.
  *
+ * Accessible-dialog hardening (a11y follow-up):
+ *  - focus-restore: the element focused before the drawer opened (the trigger)
+ *    is captured on open and re-focused on close/unmount,
+ *  - focus-trap: Tab / Shift+Tab wrap inside the dialog so keyboard focus can
+ *    never escape behind the scrim. Focusables are re-queried on each Tab so the
+ *    trap survives drawer-content changes (lazy panels, sub-tabs).
+ *
  * `role="dialog"` + `aria-modal` + `aria-label` make it a proper modal surface.
  * The component is fully controlled — `open` drives mount/visibility, the host
  * (PticaPageContent) owns the open-key state and URL deep-link.
@@ -28,15 +35,72 @@ interface Props {
   children: React.ReactNode;
 }
 
+const FOCUSABLE_SELECTOR =
+  'a[href], button:not([disabled]), input, select, textarea, [tabindex]:not([tabindex="-1"])';
+
 export function PticaDrawer({ open, title, sub, onClose, children }: Props) {
   const closeRef = useRef<HTMLButtonElement | null>(null);
+  const dialogRef = useRef<HTMLElement | null>(null);
+  /** Element focused right before the drawer opened — restored on close. */
+  const triggerRef = useRef<HTMLElement | null>(null);
+  // Hold the latest onClose in a ref so the effect can depend on [open] only.
+  // (onClose's identity changes when the host's URL/searchParams change; keeping
+  // it out of the deps stops the effect re-running mid-open and thrashing focus.)
+  const onCloseRef = useRef(onClose);
+  onCloseRef.current = onClose;
 
-  // Esc-to-close + body-scroll-lock + focus the close button on open.
+  // Esc-to-close + body-scroll-lock + focus the close button on open +
+  // focus-trap (Tab/Shift+Tab wrap) + focus-restore to the trigger on close.
   useEffect(() => {
     if (!open) return;
 
+    // Capture the trigger (the element that had focus when the drawer opened)
+    // so it can be re-focused on close — standard accessible-dialog behaviour.
+    triggerRef.current =
+      document.activeElement instanceof HTMLElement
+        ? document.activeElement
+        : null;
+
     function onKeyDown(e: KeyboardEvent) {
-      if (e.key === "Escape") onClose();
+      if (e.key === "Escape") {
+        onCloseRef.current();
+        return;
+      }
+      if (e.key !== "Tab") return;
+
+      const dialog = dialogRef.current;
+      if (!dialog) return;
+
+      // Re-query focusables on every Tab so the trap survives content changes
+      // (lazy-mounted panels, sub-tabs) rather than caching a stale list.
+      const focusables = Array.from(
+        dialog.querySelectorAll<HTMLElement>(FOCUSABLE_SELECTOR),
+      ).filter((el) => !el.hasAttribute("disabled") && el.tabIndex !== -1);
+      if (focusables.length === 0) {
+        e.preventDefault();
+        return;
+      }
+
+      const first = focusables[0];
+      const last = focusables[focusables.length - 1];
+      const activeEl =
+        document.activeElement instanceof HTMLElement
+          ? document.activeElement
+          : null;
+
+      if (e.shiftKey) {
+        // Shift+Tab on the first (or focus already outside) → wrap to last.
+        if (activeEl === first || !dialog.contains(activeEl)) {
+          e.preventDefault();
+          last.focus();
+        }
+      } else {
+        // Tab on the last (or focus already outside) → wrap to first.
+        if (activeEl === last || !dialog.contains(activeEl)) {
+          e.preventDefault();
+          first.focus();
+        }
+      }
     }
     document.addEventListener("keydown", onKeyDown);
 
@@ -49,8 +113,15 @@ export function PticaDrawer({ open, title, sub, onClose, children }: Props) {
     return () => {
       document.removeEventListener("keydown", onKeyDown);
       document.body.style.overflow = prevOverflow;
+
+      // Restore focus to the trigger if it is still in the DOM and focusable.
+      const trigger = triggerRef.current;
+      triggerRef.current = null;
+      if (trigger && document.contains(trigger)) {
+        trigger.focus();
+      }
     };
-  }, [open, onClose]);
+  }, [open]);
 
   return (
     <>
@@ -60,6 +131,7 @@ export function PticaDrawer({ open, title, sub, onClose, children }: Props) {
         aria-hidden="true"
       />
       <aside
+        ref={dialogRef}
         className={`${styles.drawer} ${open ? styles.drawerOpen : ""}`}
         role="dialog"
         aria-modal="true"

frontend/src/components/site-finder/ptica/massing/MassingScene.tsx

@@ -504,8 +504,10 @@ export default function MassingScene({
     scene.add(sun.target);
     sunRef.current = sun;
 
-    // initial mass + sun
-    rebuildMass(computeModel(parcelArea, farTarget, floors, sections));
+    // initial sun. The initial mass is built by the dedicated floors/sections
+    // effect below, which runs right after this mount effect in the same commit
+    // (after paint, like all passive effects) now that sceneRef is set — the RAF
+    // render loop paints it on the next frame, so no duplicate build here.
     placeSun(hour);
 
     // resize handling

frontend/src/components/site-finder/ptica/scenarios/HorizonForecast.tsx

@@ -202,7 +202,7 @@ export function HorizonForecast({
             </tbody>
           </table>
           {segmentLabel && (
-            <div className={styles.scKvRow} style={{ marginTop: 8 }}>
+            <div className={`${styles.scKvRow} ${styles.scKvRowSpaced}`}>
               <span className={styles.scK}>Сегмент</span>
               <span className={styles.scV}>{segmentLabel}</span>
             </div>

frontend/src/components/site-finder/ptica/scenarios/RecommendedProduct.tsx

@@ -122,7 +122,7 @@ export function RecommendedProduct({
       )}
 
       {targetPrice && (
-        <div className={styles.scKvRow} style={{ marginTop: 8 }}>
+        <div className={`${styles.scKvRow} ${styles.scKvRowSpaced}`}>
           <span className={styles.scK}>Целевая цена</span>
           <span className={styles.scV}>{targetPrice}</span>
         </div>