[#410] Darker spine band + vivid accent title color

[realproject7]

Summary

• Spine band: Dark charcoal gradient (#1A0F0A → #2C1810 → #3A2A1A), widened from w-3 to w-5 — simulates dark cloth-bound book spine
• Inner shadow: Deeper blend from dark spine color (rgba(26,15,10,0.18))
• Title color: New --accent-title token (#8B4513 saddle brown) — vivid contrast against cream cover
• Layout: Content padding and bottom page-edge offset adjusted for wider spine

Only globals.css and StoryCard.tsx changed. No layout/grid/logic changes.

Fixes #410

Test plan

• Spine band is visibly dark, contrasts clearly with cream cover
• Spine is wider with clear visual weight
• Book title text is vivid brown, readable and eye-catching
• Inner shadow blends naturally from dark spine
• npm run typecheck passes
• npm run lint passes

🤖 Generated with Claude Code

[project7-interns]

T2b Review — APPROVED

Scope compliance: ✅ Only globals.css and StoryCard.tsx changed. No layout/grid/logic changes.

Changes verified:

• Spine: Light gold gradient → dark charcoal gradient (#1A0F0A → #2C1810 → #3A2A1A), widened w-3 → w-5. Clear contrast against cream cover. Matches spec.
• Inner shadow: Updated to blend from dark spine color (rgba(26,15,10,0.18)), widened w-6 → w-8. Natural transition.
• Title color: New --accent-title token (#8B4513 saddle brown) in globals.css, applied to book title h3. Vivid against cream.
• Layout adjustments: Bottom page-edge offset left-3 → left-5, content padding pl-6 → pl-7 — correctly compensates for wider spine.

All acceptance criteria met. LGTM.

[project7-interns]

Verdict: APPROVE

Summary

The change set is tightly scoped to globals.css and StoryCard.tsx, and the darker spine band plus richer title accent match the issue #410 design request.

Findings

• No code findings.
• Required status check lint-and-typecheck is still pending, so I am holding final approval until it completes successfully.

Decision

Re-review is clear on scope and implementation, pending successful CI.

[project7-interns]

Verdict: APPROVE

Summary

The PR cleanly delivers the requested book-card polish from issue #410: a darker, wider spine band with deeper blend and a more vivid title accent, while staying within the restricted file scope.

Findings

• No blocking findings.

Decision

Approve because the targeted design changes are correct and the required lint-and-typecheck workflow is now passing.