{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "caption-weight-shift",
  "title": "Caption Weight Shift",
  "description": "Font weight animates from 100 to 900 when each word is spoken, back to thin after.",
  "dependencies": [
    "@editframe/react"
  ],
  "files": [
    {
      "path": "registry/bases/editframe/components/caption-weight-shift/index.tsx",
      "content": "\"use client\";\n\nimport { Timegroup } from \"@editframe/react\";\nimport type { CSSProperties } from \"react\";\n\nexport interface CaptionWord {\n  text: string;\n  start: number;\n  end: number;\n}\n\nexport interface CaptionWeightShiftProps {\n  words?: CaptionWord[];\n  color?: string;\n  activeColor?: string;\n  dimColor?: string;\n  fontSize?: number;\n  background?: string;\n  speed?: number;\n  fps?: number;\n  durationInFrames?: number;\n  width?: number;\n  height?: number;\n  className?: string;\n}\n\nconst DEFAULT_WORDS: CaptionWord[] = [\n  { end: 0.35, start: 0, text: \"Every\" },\n  { end: 0.65, start: 0.35, text: \"great\" },\n  { end: 1, start: 0.65, text: \"video\" },\n  { end: 1.45, start: 1.1, text: \"starts\" },\n  { end: 1.65, start: 1.45, text: \"with\" },\n  { end: 1.8, start: 1.65, text: \"a\" },\n  { end: 2.15, start: 1.8, text: \"single\" },\n  { end: 2.7, start: 2.15, text: \"frame.\" },\n  { end: 3.2, start: 3, text: \"No\" },\n  { end: 3.9, start: 3.2, text: \"timelines.\" },\n  { end: 4.2, start: 4, text: \"No\" },\n  { end: 4.5, start: 4.2, text: \"drag\" },\n  { end: 4.65, start: 4.5, text: \"and\" },\n  { end: 5.1, start: 4.65, text: \"drop.\" },\n  { end: 5.55, start: 5.3, text: \"Just\" },\n  { end: 6, start: 5.55, text: \"code.\" },\n];\n\nconst WORDS_PER_GROUP = 3;\n\nexport const CaptionWeightShift = ({\n  words = DEFAULT_WORDS,\n  color = \"#ffffff\",\n  activeColor = \"#ffffff\",\n  dimColor = \"rgba(255,255,255,0.35)\",\n  fontSize = 72,\n  background = \"#0a0a0a\",\n  speed = 1,\n  fps = 30,\n  durationInFrames = 180,\n  width = 1280,\n  height = 720,\n  className,\n}: CaptionWeightShiftProps) => {\n  const safeSpeed = Math.max(0.01, speed);\n  const durationMs = (durationInFrames / fps) * 1000;\n\n  const groups = [];\n  for (let i = 0; i < words.length; i += WORDS_PER_GROUP) {\n    const groupWords = words.slice(i, i + WORDS_PER_GROUP);\n    groups.push({\n      endMs: ((groupWords.at(-1)?.end ?? 0) * 1000) / safeSpeed + 180,\n      startMs: (groupWords[0].start * 1000) / safeSpeed,\n      words: groupWords,\n    });\n  }\n\n  const containerStyle: CSSProperties = {\n    background,\n    height,\n    overflow: \"hidden\",\n    position: \"relative\",\n    width,\n  };\n\n  return (\n    <Timegroup\n      className={className}\n      duration={`${durationMs}ms`}\n      mode=\"fixed\"\n      style={containerStyle}\n    >\n      <>\n        <style>{`\n          @keyframes framecn-cws-grp-in {\n            from { opacity: 0; transform: translateY(20px); }\n            to   { opacity: 1; transform: translateY(0); }\n          }\n          @keyframes framecn-cws-grp-out {\n            from { opacity: 1; }\n            to   { opacity: 0; }\n          }\n        `}</style>\n        <div\n          style={{\n            bottom: Math.round(height * 0.15),\n            left: 0,\n            position: \"absolute\",\n            right: 0,\n          }}\n        >\n          {groups.map((group, gi) => (\n            <div\n              key={gi}\n              style={{\n                alignItems: \"center\",\n                animation: [\n                  `framecn-cws-grp-in 180ms ease-out ${group.startMs}ms both`,\n                  `framecn-cws-grp-out 80ms ease-in ${group.endMs}ms forwards`,\n                ].join(\", \"),\n                display: \"flex\",\n                flexWrap: \"wrap\",\n                gap: \"0.3em\",\n                justifyContent: \"center\",\n                left: 0,\n                opacity: 0,\n                padding: \"0 80px\",\n                position: \"absolute\",\n                right: 0,\n              }}\n            >\n              {group.words.map((word, wi) => {\n                const wordStartMs = (word.start * 1000) / safeSpeed;\n                const wordDurationMs = Math.max(\n                  120,\n                  ((word.end - word.start) * 1000) / safeSpeed\n                );\n                const activateKeyframe = `framecn-cws-activate-${gi}-${wi}`;\n\n                return (\n                  <span key={wi} style={{ display: \"inline-block\" }}>\n                    <style>{`\n                      @keyframes ${activateKeyframe} {\n                        0%, 100% { font-weight: 100; opacity: 0.35; color: ${dimColor}; }\n                        8%, 92%  { font-weight: 900; opacity: 1; letter-spacing: 0.01em; color: ${activeColor}; }\n                      }\n                    `}</style>\n                    <span\n                      style={{\n                        animation: `${activateKeyframe} ${wordDurationMs}ms ease-in-out ${wordStartMs}ms both`,\n                        color,\n                        display: \"inline-block\",\n                        fontFamily:\n                          \"'Montserrat', var(--font-geist-sans), -apple-system, BlinkMacSystemFont, sans-serif\",\n                        fontSize,\n                        fontWeight: 100,\n                        lineHeight: 1.1,\n                        opacity: 0.35,\n                        textTransform: \"uppercase\",\n                      }}\n                    >\n                      {word.text}\n                    </span>\n                  </span>\n                );\n              })}\n            </div>\n          ))}\n        </div>\n      </>\n    </Timegroup>\n  );\n};\n",
      "type": "registry:component",
      "target": "components/framecn/caption-weight-shift.tsx"
    }
  ],
  "type": "registry:component"
}