diff --git a/.planning/phases/05-live-show-execution/05-UI-SPEC.md b/.planning/phases/05-live-show-execution/05-UI-SPEC.md
index 9e5562f..1f49be4 100644
--- a/.planning/phases/05-live-show-execution/05-UI-SPEC.md
+++ b/.planning/phases/05-live-show-execution/05-UI-SPEC.md
@@ -34,13 +34,11 @@ Declared values (multiples of 4 only):
 
 | Token | Value | Usage |
 |-------|-------|-------|
-| xs | 4px | Inner icon gaps, strip padding (`padding: 0 4px`) |
+| xs | 4px | Inner icon gaps, strip padding (`padding: 0 4px`), live-preview top/bottom padding |
 | sm | 8px | Element gaps inside device strips, panel content padding top/bottom |
-| md | 12px | Header/transport bar horizontal padding |
-| lg | 16px | Timeline toolbar gap between field groups |
+| lg | 16px | Header/transport bar horizontal padding |
 | xl | 24px | — |
 | 2xl | 32px | Timeline toolbar fixed height |
-| transport | 52px | Transport bar grid row height (existing, do not change) |
 
 Exceptions:
 - Device strip row height: 18px (compact single-line strip — matches existing `.block-inspector` at 40px; preview is intentionally denser)
@@ -48,6 +46,9 @@ Exceptions:
 - Strip color swatch: 40px wide × 10px tall (fixed decoration element)
 - Live preview panel max-height: 60px (D-06 from CONTEXT.md, overflows to scroll if many devices)
 
+Fixed dimensions (not spacing tokens — declared here for executor reference):
+- Transport bar grid row height: 52px (existing fixed dimension, unchanged from Phase 4)
+
 Source: CONTEXT.md D-06 "Compact — 40-60px total" + RESEARCH.md Pattern 2 CSS.
 
 ---
@@ -98,6 +99,8 @@ All values use existing CSS custom properties. No new color tokens for Phase 5.
 
 **Live preview color fills:** The preview device strip color swatch uses the cue's `params.color` value (RGB array from the animation block) as `background-color: rgb(r, g, b)`. This is data-driven, not a design token. Inactive state uses `--text-dim` (`#555555`) as fill.
 
+**Focal point:** The active `.device-strip` color swatch is the primary visual signal during playback. The color fill (data-driven RGB from the animation cue) is the focal point of the live preview panel — all other elements in the strip are secondary context for which device and animation is active.
+
 Source: `style.css` entire file; CONTEXT.md D-11/D-12/D-15; Phase 1 CONTEXT.md D-11 through D-15.
 
 ---
@@ -142,7 +145,7 @@ Collapsing: If device count > 3, panel height exceeds 60px and scrolls via `over
     display: flex;
     flex-direction: column;
     gap: 1px;
-    padding: 2px 0;
+    padding: 4px 0;
     max-height: 60px;
     overflow-y: auto;
     flex-shrink: 0;
@@ -155,7 +158,7 @@ Collapsing: If device count > 3, panel height exceeds 60px and scrolls via `over
     padding: 0 4px;
     background: var(--bg-panel);
     gap: 8px;
-    font-size: 11px;
+    font-size: 12px;
     font-family: var(--font-mono);
     letter-spacing: 0.05em;
     transition: background-color 0.1s;
@@ -309,6 +312,9 @@ Transport bar remains in `.app-shell` grid `transport` area — it is NOT inside
 
 The show selector controls are added to the existing `.transport-bar` flex row.
 
+Fixed dimensions (not spacing tokens):
+- Transport bar grid row height: 52px (existing, do not change)
+
 ---
 
 ## Registry Safety