function drawVisor() {
  const canvas = document.getElementById('visor');
  const ctx = canvas.getContext('2d');
  
  ctx.beginPath();
  ctx.moveTo(5, 45);
  ctx.bezierCurveTo(15, 64, 45, 64, 55, 45);
  
  ctx.lineTo(55, 20);
  ctx.bezierCurveTo(55, 15, 50, 10, 45, 10);
  
  ctx.lineTo(15, 10);
  
  ctx.bezierCurveTo(15, 10, 5, 10, 5, 20);
  ctx.lineTo(5, 45);
  
  ctx.fillStyle = '#2f3640';
  ctx.strokeStyle = '#f5f6fa';
  ctx.fill();
  ctx.stroke();
}

const cordCanvas = document.getElementById('cord');
const ctx = cordCanvas.getContext('2d');

let y1 = 160;
let y2 = 100;
let y3 = 100;

let y1Forward = true;
let y2Forward = false;
let y3Forward = true;

function animate() {
  requestAnimationFrame(animate);
  ctx.clearRect(0, 0, innerWidth, innerHeight);
  
  ctx.beginPath();
  ctx.moveTo(130, 170);
  ctx.bezierCurveTo(250, y1, 345, y2, 400, y3);
  
  ctx.strokeStyle = 'white';
  ctx.lineWidth = 8;
  ctx.stroke();
 
  
  if (y1 === 100) {
    y1Forward = true;
  }
  
  if (y1 === 300) {
    y1Forward = false;
  }
  
  if (y2 === 100) {
    y2Forward = true;
  }
  
  if (y2 === 310) {
    y2Forward = false;
  }
  
  if (y3 === 100) {
    y3Forward = true;
  }
  
  if (y3 === 317) {
    y3Forward = false;
  }
  
  y1Forward ? y1 += 1 : y1 -= 1;
  y2Forward ? y2 += 1 : y2 -= 1;
  y3Forward ? y3 += 1 : y3 -= 1;
}

drawVisor();
animate();