Cyberpunk Button

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"use client";

import { useState, useEffect } from "react";

type PixelColor = "lime" | "bloodred" | "sky";
type PixelShade = "white" | "black";

interface CyberpunkButtonProps {
  buttonColor?: PixelColor;
  pixelColor?: PixelShade;
  buttonText?: string;
}

const colorMap: Record<PixelColor, string> = {
  lime: "#ccff00",
  bloodred: "#f03030",
  sky: "#007bff",
};

const gradientMap: Record<PixelColor, string> = {
  lime: "linear-gradient(to bottom, #ccff00, #b3e600)",
  bloodred: "linear-gradient(to bottom, #f03030, #e11d2e)",
  sky: "linear-gradient(to bottom, #007bff, #0056b3)",
};

const pixelShadeMap: Record<PixelShade, { active: string; inactive: string }> =
  {
    white: {
      active: "rgba(255,255,255,1)",
      inactive: "rgba(255,255,255,0.55)",
    },
    black: {
      active: "rgba(15,15,15,1)",
      inactive: "rgba(15,15,15,0.55)",
    },
  };

const CyberpunkButton = ({
  buttonColor = "lime",
  pixelColor = "black",
  buttonText = "Book a demo",
}: CyberpunkButtonProps) => {
  const [isHovered, setIsHovered] = useState(false);
  const [shimmerPhase, setShimmerPhase] = useState(0);
  const [activeArrow, setActiveArrow] = useState(0);

  const rows = 5;
  const pixelSize = 3;
  const gap = 2;
  const spacing = 5;
  const centerRow = 2;
  const colsHovered = 30;
  const arrowCols = spacing;

  useEffect(() => {
    if (isHovered) return;
    const timer = setInterval(() => {
      setShimmerPhase((prev) => (prev + 1) % (spacing + 3));
    }, 110);
    return () => clearInterval(timer);
  }, [isHovered]);

  useEffect(() => {
    if (!isHovered) return;
    const totalArrows = Math.floor(colsHovered / spacing);
    const timer = setInterval(() => {
      setActiveArrow((prev) => (prev + 1) % totalArrows);
    }, 120);
    return () => clearInterval(timer);
  }, [isHovered]);

  const isPixelActiveHovered = (r: number, c: number) => {
    const rowOffset = r - centerRow;
    const diagonalShift = Math.abs(rowOffset);
    const arrowIndex = Math.floor(c / spacing);
    const phase = c % spacing;

    const isHead =
      r === centerRow && (phase === spacing - 1 || phase === spacing - 2);

    const isDiagonal =
      r !== centerRow &&
      (phase === spacing - 1 - diagonalShift ||
        phase === spacing - 2 - diagonalShift);

    return { active: isHead || isDiagonal, arrowIndex };
  };

  const pixelColors = pixelShadeMap[pixelColor];

  return (
    <button
      style={{
        position: "relative",
        display: "flex",
        alignItems: "center",
        backgroundColor: "#0a0a0a",
        borderRadius: "12px",
        padding: "4px",
        border: "1px solid #262626",
        height: "64px",
        cursor: "pointer",
        transition: "border-color 0.3s",
        outline: "none",
        overflow: "hidden",
      }}
      onMouseEnter={() => setIsHovered(true)}
      onMouseLeave={() => setIsHovered(false)}
    >
      {/* TEXT (now flexible) */}
      <div
        style={{
          paddingLeft: "72px",
          paddingRight: "24px",
          whiteSpace: "nowrap",
          transition: "opacity 0.3s, transform 0.3s",
          opacity: isHovered ? 0 : 1,
          transform: isHovered ? "translateX(-8px)" : "translateX(0)",
        }}
      >
        <span
          style={{
            color: "white",
            fontSize: "18px",
            fontWeight: 500,
            letterSpacing: "-0.02em",
            fontFamily: "system-ui",
          }}
        >
          {buttonText}
        </span>
      </div>

      {/* COLORED BOX */}
      <div
        style={{
          position: "absolute",
          left: "4px",
          top: "4px",
          bottom: "4px",
          width: isHovered ? "calc(100% - 8px)" : "56px",
          transition: "width 0.5s cubic-bezier(0.2,0,0,1)",
          borderRadius: "8px",
          display: "flex",
          alignItems: "center",
          justifyContent: "center",
          overflow: "hidden",
          backgroundColor: colorMap[buttonColor],
          backgroundImage: isHovered ? gradientMap[buttonColor] : "none",
        }}
      >
        {isHovered ? (
          <div style={{ display: "grid", gap: `${gap}px` }}>
            {Array.from({ length: rows }).map((_, r) => (
              <div key={r} style={{ display: "flex", gap: `${gap}px` }}>
                {Array.from({ length: colsHovered }).map((_, c) => {
                  const { active, arrowIndex } = isPixelActiveHovered(r, c);
                  const isHighlighted = arrowIndex === activeArrow;
                  return (
                    <div
                      key={`${r}-${c}`}
                      style={{
                        width: `${pixelSize}px`,
                        height: `${pixelSize}px`,
                        borderRadius: "1px",
                        backgroundColor: active
                          ? isHighlighted
                            ? pixelColors.active
                            : pixelColors.inactive
                          : "transparent",
                      }}
                    />
                  );
                })}
              </div>
            ))}
          </div>
        ) : (
          <div style={{ display: "grid", gap: `${gap}px` }}>
            {Array.from({ length: rows }).map((_, r) => (
              <div key={r} style={{ display: "flex", gap: `${gap}px` }}>
                {Array.from({ length: arrowCols }).map((_, c) => {
                  const { active } = isPixelActiveHovered(r, c);
                  const shimCol = shimmerPhase % spacing;
                  const phase = c % spacing;
                  const isShimmering = active && phase === shimCol;

                  return (
                    <div
                      key={`${r}-${c}`}
                      style={{
                        width: `${pixelSize}px`,
                        height: `${pixelSize}px`,
                        borderRadius: "1px",
                        backgroundColor: active
                          ? isShimmering
                            ? pixelColors.active
                            : pixelColors.inactive
                          : "transparent",
                      }}
                    />
                  );
                })}
              </div>
            ))}
          </div>
        )}
      </div>
    </button>
  );
};

export default CyberpunkButton;