סליידר תקציב קפיצי

Build a "Spring Budget Slider" React component.

CONCEPT: A budget picker for a lead form: a ruler-like track with ticks, a draggable thumb that feels squishy, and a big live value readout.

LAYOUT & CONTENT:
- Readout: '₪ 35,000' at 3rem with tabular numerals; a sub-label that changes by range ('Landing page', 'Studio site', 'Full platform').
- Track: 1px charcoal line with 11 ticks (taller every 5th); filled portion cobalt 3px.
- Thumb: 28px circle, charcoal fill, cream inner dot.

INTERACTIONS & MOTION:
- Thumb drag='x' constrained to the track; map x to value 5k–100k snapped to 5k.
- whileDrag: scaleX 1.25 scaleY 0.85 (squash); release springs to snapped position (stiffness 500 damping 30).
- Keyboard: arrow keys change by 5k; role='slider' with aria-valuenow/min/max/valuetext.
- Sub-label crossfades when the range bucket changes.

DESIGN SYSTEM (non-negotiable):
- Palette: paper background #FAF9F6, deep charcoal #121212 for text and 1px borders, ONE warm accent: cobalt #1D4ED8 or terracotta #D9534F. Secondary surface #F2EFE8.
- Typography: Swiss / editorial. A tight grotesk for UI (Instrument Sans, Inter Tight or similar) with negative tracking on display sizes; an italic serif (Instrument Serif) used sparingly for one emphasized word.
- NO dark-mode neon, NO glow, NO glassmorphism, NO backdrop blur, NO purple-to-blue gradients, NO emoji icons. Solid fills, hairline rules, honest shadows (hard offset or none).
- Motion: Framer Motion with spring physics (type: "spring", stiffness 300-500, damping 20-35). Animate transform and opacity only. Respect prefers-reduced-motion via useReducedMotion().
- Icons: lucide-react, 1.5px stroke.
- Accessibility: real <button>/<a>/<label> elements, visible focus ring (2px cobalt, 3px offset), keyboard operable, aria attributes where state changes.

OUTPUT: one self-contained React component file (Tailwind CSS v4 utility classes, framer-motion, lucide-react), no external images, default export, ready to paste into a Next.js App Router page with "use client".