frontend-react/src/components/AnalyzeButton.tsx

import styled from 'styled-components';

interface AnalyzeButtonProps {
  onClick: () => void;
}

const StyledWrapper = styled.div`
  .button {
    --main-size: 1.1em;
    --color-text: #ffffff;
    --color-background: #7c3aed;
    --color-background-hover: #a855f7;
    --color-outline: rgba(168, 85, 247, 0.25);
    --color-shadow: rgba(0, 0, 0, 0.4);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    border: none;
    border-radius: calc(var(--main-size) * 100);
    padding: 0.45em 0 0.45em 0.9em;
    font-family: 'Space Grotesk', 'Poppins', sans-serif;
    font-weight: 700;
    font-size: var(--main-size);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    background: var(--color-background);
    box-shadow: 0 0 0.3em 0 var(--color-background);
    transition: 1s;
  }

  .button:active {
    transform: scale(0.95);
  }

  .button:hover {
    outline: 0.1em solid transparent;
    outline-offset: 0.2em;
    box-shadow: 0 0 1.2em 0 var(--color-background);
    animation: ripple 1s linear infinite, colorize 1s infinite;
    transition: 0.5s;
  }

  .button span {
    margin-right: 0.3em;
    transition: 0.5s;
  }

  .button:hover span {
    text-shadow: 5px 5px 5px var(--color-shadow);
  }

  .button:active span {
    text-shadow: none;
  }

  .button svg {
    height: 0.8em;
    fill: var(--color-text);
    margin-right: -0.16em;
    position: relative;
    transition: 0.5s;
  }

  .button:hover svg {
    margin-right: 0.66em;
    transition: 0.5s;
    filter: drop-shadow(5px 5px 2.5px var(--color-shadow));
  }

  .button:active svg {
    filter: none;
  }

  .button svg polygon:nth-child(1) {
    transition: 0.4s;
    transform: translateX(-60%);
  }

  .button svg polygon:nth-child(2) {
    transition: 0.5s;
    transform: translateX(-30%);
  }

  .button:hover svg polygon:nth-child(1) {
    transform: translateX(0%);
    animation: opacity 1s infinite 0.6s;
  }

  .button:hover svg polygon:nth-child(2) {
    transform: translateX(0%);
    animation: opacity 1s infinite 0.4s;
  }

  .button:hover svg polygon:nth-child(3) {
    animation: opacity 1s infinite 0.2s;
  }

  @keyframes opacity {
    0%   { opacity: 1; }
    50%  { opacity: 0; }
    100% { opacity: 1; }
  }

  @keyframes colorize {
    0%   { background: var(--color-background); }
    50%  { background: var(--color-background-hover); }
    100% { background: var(--color-background); }
  }

  @keyframes ripple {
    0%   { outline: 0em solid transparent;              outline-offset: -0.1em; }
    50%  { outline: 0.2em solid var(--color-outline);   outline-offset: 0.2em; }
    100% { outline: 0.4em solid transparent;            outline-offset: 0.4em; }
  }
`;

export default function AnalyzeButton({ onClick }: AnalyzeButtonProps) {
  return (
    <StyledWrapper>
      <button className="button" onClick={onClick}>
        <span>ANALYZE VIDEO</span>
        <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 66 43">
          <polygon points="39.58,4.46 44.11,0 66,21.5 44.11,43 39.58,38.54 56.94,21.5" />
          <polygon points="19.79,4.46 24.32,0 46.21,21.5 24.32,43 19.79,38.54 37.15,21.5" />
          <polygon points="0,4.46 4.53,0 26.42,21.5 4.53,43 0,38.54 17.36,21.5" />
        </svg>
      </button>
    </StyledWrapper>
  );
}