[Design] Book card polish v2 — spine hinge, paper texture, headline fixes

[realproject7]

Parent Ticket

Follow-up polish for #403 (Book Shelf Design Trial)

Reference Design

T1 will upload reference images below.

Reference	Image
Book hinge/spine
Paper texture

Scope

Five targeted tweaks:

1. Replace --accent color: light orange → vivid brown

This is the most important change. The current --accent: #DAAA63 (rgb(218, 170, 99)) is a light orange/gold. Replace it globally with a vivid brown.

In src/app/globals.css:

/* BEFORE */
--accent: #DAAA63;
--accent-dim: #C4944F;

/* AFTER */
--accent: #8B4513;      /* saddle brown — vivid, warm, readable */
--accent-dim: #6B3410;  /* darker shade for hover/dim states */

This single change will fix the color across all 92 occurrences in 29 files that reference text-accent, bg-accent, border-accent, etc. No need to edit individual components.

Also remove --accent-title (added by #410) since --accent itself is now the vivid brown — it's redundant. Update any text-[var(--accent-title)] references to just use text-accent.

File: src/app/globals.css, and scan for any accent-title references to clean up

2. Realistic book spine/hinge on left side

The current left spine is a flat colored band. Replace it with a more realistic book hinge effect — like a hardcover book where you can see the transition from spine to cover with a subtle inset/groove. See the reference image for the look: a visible vertical groove/indent where the spine meets the front cover.

Current (StoryCard.tsx ~line 38):

<div className="absolute inset-y-0 left-0 w-3 rounded-l-sm"
  style={{ background: "linear-gradient(to right, #A6926F, #C4A87A, #B89E72)" }}
/>

Target: A dark spine using the new --accent brown or #2C1810 with a visible vertical groove/hinge line where spine meets cover. The hinge should feel like a real hardcover binding — a narrow indent or shadow line at the spine-cover junction.

File: src/components/StoryCard.tsx

3. Restore original headline text

T3 changed the homepage headline during the redesign. Restore the original copy exactly:

Headline (h1): Your story is a token.
Tagline: Every plot you publish drives the market — and every trade pays you. Write more, earn more.

File: src/app/page.tsx

4. Paper texture on book covers + story content area

Apply a CSS-only paper/parchment texture to two surfaces:

1. Book cover background on StoryCard (home page)
2. Story content area on detail page (currently plain white)

CSS paper texture recipe (from CodePen reference):

.paper-texture {
  background-color: #fffef0;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAMAAAAp4XiDAAAAUVBMVEWFhYWDg4N3d3dtbW17e3t1dXWBgYGHh4d5eXlzc3OLi4ubm5uVlZWPj4+NjY19fX2JiYl/f39ra2uRkZGZmZlpaWmXl5dvb29xcXGTk5NnZ2c8TV1mAAAAG3RSTlNAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEAvEOwtAAAFVklEQVR4XpWWB67c2BUFb3g557T/hRo9/WUMZHlgr4Bg8Z4qQgQJlHI4A8SzFVrapvmTF9O7dmYRFZ60YiBhJRCgh1FYhiLAmdvX0CzTOpNE77ME0Zty/nWWzchDtiqrmQDeuv3powQ5ta2eN0FY0InkqDD73lT9c9lEzwUNqgFHs9VQce3TVClFCQrSTfOiYkVJQBmpbq2L6iZavPnAPcoU0dSw0SUTqz/GtrGuXfbyyBniKykOWQWGqwwMA7QiYAxi+IlPdqo+hYHnUt5ZPfnsHJyNiDtnpJyayNBkF6cWoYGAMY92U2hXHF/C1M8uP/ZtYdiuj26UdAdQQSXQErwSOMzt/XWRWAz5GuSBIkwG1H3FabJ2OsUOUhGC6tK4EMtJO0ttC6IBD3kM0ve0tJwMdSfjZo+EEISaeTr9P3wYrGjXqyC1krcKdhMpxEnt5JetoulscpyzhXN5FRpuPHvbeQaKxFAEB6EN+cYN6xD7RYGpXpNndMmZgM5Dcs3YSNFDHUo2LGfZuukSWyUYirJAdYbF3MfqEKmjM+I2EfhA94iG3L7uKrR+GdWD73ydlIB+6hgref1QTlmgmbM3/LeX5GI1Ux1RWpgxpLuZ2+I+IjzZ8wqE4nilvQdkUdfhzI5QDWy+kw5Wgg2pGpeEVeCCA7b85BO3F9DzxB3cdqvBzWcmzbyMiqhzuYqtHRVG2y4x+KOlnyqla8AoWWpuBoYRxzXrfKuILl6SfiWCbjxoZJUaCBj1CjH7GIaDbc9kqBY3W/Rgjda1iqQcOJu2WW+76pZC9QG7M00dffe9hNnseupFL53r8F7YHSwJWUKP2q+k7RdsxyOB11n0xtOvnW4irMMFNV4H0uqwS5ExsmP9AxbDTc9JwgneAT5vTiUSm1E7BSflSt3bfa1tv8Di3R8n3Af7MNWzs49hmauE2wP+ttrq+AsWpFG2awvsuOqbipWHgtuvuaAE+A1Z/7gC9hesnr+7wqCwG8c5yAg3AL1fm8T9AZtp/bbJGwl1pNrE7RuOX7PeMRUERVaPpEs+yqeoSmuOlokqw49pgomjLeh7icHNlG19yjs6XXOMedYm5xH2YxpV2tc0Ro2jJfxC50ApuxGob7lMsxfTbeUv07TyYxpeLucEH1gNd4IKH2LAg5TdVhlCafZvpskfncCfx8pOhJzd76bJWeYFnFciwcYfubRc12Ip/ppIhA1/mSZ/RxjFDrJC5xifFjJpY2Xl5zXdguFqYyTR1zSp1Y9p+tktDYYSNflcxI0iyO4TPBdlRcpeqjK/piF5bklq77VSEaA+z8qmJTFzIWiitbnzR794USKBUaT0NTEsVjZqLaFVqJoPN9ODG70IPbfBHKK+/q/AWR0tJzYHRULOa4MP+W/HfGadZUbfw177G7j/OGbIs8TahLyynl4X4RinF793Oz+BU0saXtUHrVBFT/DnA3ctNPoGbs4hRIjTok8i+algT1lTHi4SxFvONKNrgQFAq2/gFnWMXgwffgYMJpiKYkmW3tTg3ZQ9Jq+f8XN+A5eeUKHWvJWJ2sgJ1Sop+wwhqFVijqWaJhwtD8MNlSBeWNNWTa5Z5kPZw5+LbVT99wqTdx29lMUH4OIG/D86ruKEauBjvH5xy6um/Sfj7ei6UUVk4AIl3MyD4MSSTOFgSwsH/QJWaQ5as7ZcmgBZkzjjU1UrQ74ci1gWBCSGHtuV1H2mhSnO3Wp/3fEV5a+4wz//6qy8JxjZsmxxy5+4w9CDNJY09T072iKG0EnOS0arEYgXqYnXcYHwjTtUNAcMelOd4xpkoqiTYICWFq0JSiPfPDQdnt+4/wuqcXY47QILbgAAAABJRU5ErkJggg==);
  box-shadow: 0 0 40px #8f5922 inset;
}

Important:

• Do NOT apply the SVG feTurbulence filter (uneven edges)
• Do NOT apply the conic-gradient fold effect
• Keep the inset shadow subtle (40px or less)
• The background-color: #fffef0 is a slightly warm white — good for paper feel

Apply to:

• StoryCard.tsx — the front cover div (currently bg-gradient-to-br from-[#F7F0E5] via-[#F2E8D6] to-[#EBE0CE])
• Story detail page content area (src/app/story/[storylineId]/page.tsx)

Files: src/components/StoryCard.tsx, src/app/story/[storylineId]/page.tsx, src/app/globals.css

5. Verify: no remaining light orange/gold color anywhere

After changing --accent, do a final scan for any hard-coded light orange values:

• #DAAA63 or rgb(218, 170, 99) — should be zero occurrences
• #C4944F — should be zero (replaced by new --accent-dim)
• Any inline style with orange-ish colors on text

This is a verification step, not a separate change.

Files to Change

File	Change
src/app/globals.css	--accent → #8B4513, --accent-dim → #6B3410, remove --accent-title, add .paper-texture class
src/components/StoryCard.tsx	Realistic spine hinge, paper texture on cover, clean up accent-title refs
src/app/page.tsx	Restore original headline + tagline text
src/app/story/[storylineId]/page.tsx	Paper texture on story content area
Multiple (if any)	Clean up any accent-title references → just accent

DO NOT

• Do not change layout, grid, or shelf structure
• Do not change any business logic or data fetching
• Do not apply the SVG feTurbulence uneven edge effect
• Do not apply the conic-gradient fold effect

Acceptance Criteria

• --accent is #8B4513 (vivid brown), --accent-dim is #6B3410
• Zero occurrences of #DAAA63, rgb(218, 170, 99), #C4944F in codebase
• --accent-title removed (redundant now)
• Left spine has a realistic hardcover hinge/groove effect
• Home page headline reads "Your story is a token." with original tagline
• Book covers have subtle paper texture (noise + inset shadow)
• Story content area has paper texture background
• npm run typecheck passes
• npm run lint passes

Branch

task/{issue-number}-book-polish-v2