/* global table layout */
.linechart {
  --stripes: url("data:image/svg+xml,%3Csvg%20id%3D'stripes-svg'%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20width%3D'100%25'%20height%3D'100%25'%3E%3Cdefs%3E%3Cpattern%20id%3D'svg-stripes-pattern-11204'%20patternTransform%3D'rotate(130)'%20width%3D'100%25'%20height%3D'14'%20x%3D'0'%20y%3D'0'%20patternUnits%3D'userSpaceOnUse'%3E%3Cg%3E%3Crect%20x%3D'0'%20y%3D'0'%20width%3D'100%25'%20height%3D'10'%20fill%3D'rgba(0%2C%200%2C%200%2C%200)'%3E%3C%2Frect%3E%3Crect%20x%3D'0'%20y%3D'10'%20width%3D'100%25'%20height%3D'2'%20fill%3D'rgba(255%2C%20255%2C%20255%2C%201)'%3E%3C%2Frect%3E%3C%2Fg%3E%3C%2Fpattern%3E%3C%2Fdefs%3E%3Crect%20x%3D'0'%20y%3D'0'%20width%3D'100%25'%20height%3D'100%25'%20fill%3D'url(%23svg-stripes-pattern-11204)'%3E%3C%2Frect%3E%3C%2Fsvg%3E");
  --dots: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="10" viewBox="0 0 20 20"><g fill="hsl(0 0% 100% / .6)" fill-rule="evenodd"><circle cx="5" cy="4" r="5"/><circle cx="13" cy="13" r="5"/></g></svg>');
  --red: #9a031e;
  --orange: #e36414;
  --blue: #0f4c5c;
  --height: 200px;
  --width: 270px;
  caption-side: bottom;
  width: var(--width);
  border-spacing: 0;
  padding-top: var(--height);
  padding-bottom: 1rem;
  position: relative;
  margin: 0 auto 1rem auto;
}

.linechart th, .linechart td {
  font-size: 0.7rem;
}

.linechart th button {
  border: none;
  background: none;
  font-weight: 600;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

@media screen and (min-width: 410px) {
  .linechart {
    --height: 250px;
    --width: 350px;
  }

  .linechart th, .linechart td {
    font-size: 0.8rem;
  }
}

@media screen and (min-width: 510px) {
  .linechart {
    --height: 300px;
    --width: 450px;
  }
}

@media screen and (min-width: 610px) {
  .linechart {
    --height: 400px;
    --width: 550px;
  }
}

@media screen and (min-width: 710px) {
  .linechart {
    --height: 450px;
    --width: 650px;
  }
}

@media screen and (min-width: 810px) {
  .linechart {
    --height: 500px;
    --width: 750px;
  }
}

.linechart th, .linechart td {
  text-align: left;
  position: relative;
  padding: 0;
  margin: 0;
  height: 30px;
  width: calc(100% / (var(--years) + 1));
}

.linechart tr:nth-of-type(1) td {
  border-bottom: 1px solid var(--red);
}

.linechart tr:nth-of-type(2) td {
  border-bottom: 1px solid var(--orange);
}

.linechart tr:nth-of-type(3) td {
  border-bottom: 1px solid var(--blue);
}

/* dots on chart */
.linechart td::before {
  content: attr(data-pct) / '';
  position: absolute;
  left: 0;
  background: #fff;
  border: 1px solid #1b263b;
  border-radius: 50%;
  font-size: 0.7rem;
  width: 1.2rem;
  height: 1.2rem;
  text-align: center;
  line-height: 1.2rem;
  z-index: 2;
   transition: all 0.5s ease-in-out;
  /* gradient 0 - 100% */
  bottom: calc( (1px * var(--bottom)) + (var(--height) * var(--pctvalue) / 100) );
}

@media reader, speech, aural {
    .linechart td::before {
        display: none;
        visibility: hidden;
    }
}

.linechart.zoom td::before {
  /* gradient 30 - 70% */
  bottom: calc( (1px * var(--bottom) - (var(--height)) / 1.3 ) + (var(--height) * var(--pctvalue) / 45) );
}

.linechart td[data-pct='']::before {
  display: none;
}

.linechart td:nth-of-type(1)::before {
  --pctvalue: var(--1);
}

.linechart td:nth-of-type(2)::before {
  --pctvalue: var(--2);
}

.linechart td:nth-of-type(3)::before {
  --pctvalue: var(--3);
}

.linechart td:nth-of-type(4)::before {
  --pctvalue: var(--4);
}

.linechart td:nth-of-type(5)::before {
  --pctvalue: var(--5);
}

.linechart td:nth-of-type(6)::before {
  --pctvalue: var(--6);
}

.linechart td:nth-of-type(7)::before {
  --pctvalue: var(--7);
}

/* lines on chart */
.linechart tr:nth-of-type(1) td::after, .linechart tbody tr:not(.off):nth-of-type(1) th::before {
  background-color: var(--red);
}

.linechart tr:nth-of-type(2) td::after, .linechart tbody tr:not(.off):nth-of-type(2) th::before {
  background-color: var(--orange);
  background-image: var(--dots);
}

.linechart tr:nth-of-type(3) td::after, .linechart tbody tr:not(.off):nth-of-type(3) th::before {
  background-color: var(--blue);
  background-image: var(--stripes);
}

.linechart tbody tr th::before {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  bottom: 0;
  height: 6px;
}

.linechart td::after {
  content: "";
  position: absolute;
  z-index: 1;
  left: 0.6rem;
  height: 4px;
    /* gradient 0 - 100% */
  --ay: calc( (1px * var(--bottom)) + (var(--height) * var(--h1) / 100) + (1.5rem / 2) );
  --by: calc( (1px * var(--bottom)) + (var(--height) * var(--h2) / 100) + (1.5rem / 2) );
  bottom: var(--ay);
  --diffy: calc(var(--ay) - var(--by));
  --hypo: hypot(calc(var(--width) / (var(--years) + 1)), var(--diffy));
  width: var(--hypo);
  transform-origin: 0 0;
  transform: rotate(atan2(var(--diffy), calc(var(--width) / (var(--years) + 1))));
  transition: all 0.5s ease-in-out;
}

.linechart.zoom td::after {
  /* gradient 30 - 70% */
  --ay: calc( (1px * var(--bottom) - (var(--height) / 1.3)) + (var(--height) * var(--h1) / 45) + (1.5rem / 2) );
  --by: calc( (1px * var(--bottom) - (var(--height) / 1.3)) + (var(--height) * var(--h2) / 45) + (1.5rem / 2) );
}

.linechart td:nth-of-type(1)::after {
  --h1: var(--1);
  --h2: var(--2);
}

.linechart td:nth-of-type(2)::after {
  --h1: var(--2);
  --h2: var(--3);
}

.linechart td:nth-of-type(3)::after {
  --h1: var(--3);
  --h2: var(--4);
}

.linechart td:nth-of-type(4)::after {
  --h1: var(--4);
  --h2: var(--5);
}

.linechart td:nth-of-type(5)::after {
  --h1: var(--5);
  --h2: var(--6);
}

.linechart td:nth-of-type(6)::after {
  --h1: var(--6);
  --h2: var(--7);
}

.linechart td:nth-of-type(7)::after {
  --h1: var(--7);
  --h2: var(--8);
}

/* swith on - off lines */
.linechart tbody tr.off td::before, .linechart tbody tr.off td::after {
  display: none;
}