/* Type and background */
body {
  font-family: var(--body-font-family);
  color: var(--color-700);
  background-color: #fff;
  background-image: repeating-linear-gradient(90deg, var(--bg-grid-color) 0, var(--bg-grid-color) var(--bg-grid-line), transparent 0, transparent 50%), repeating-linear-gradient(180deg, var(--bg-grid-color) 0, var(--bg-grid-color) var(--bg-grid-line), transparent 0, transparent 50%);
  background-size: var(--bg-grid-box) var(--bg-grid-box);
  background-position: calc(50% - (var(--bg-grid-line)/2)) top;
}

  .content {
    background-color: #fff;
    border-inline: calc(var(--bg-grid-line)/2) solid var(--bg-grid-color);
  }

::selection {
  color: #fff;
  background-color: var(--color-700);
}

h1, .h1, h2, .h2, h3, .h3, h4, .h4, h5, .h5, h6, .h6 {
  font-family: var(--heading-font-family);
  font-weight: 400;
  word-spacing: -.5ch;
}

h1, h2, h3 {
  letter-spacing: -.025em;
}

h1, h2 {
  font-weight: 600;
}

/* Clamp from 375 - 768px */
h1 { font-size: 3rem; font-size: clamp(2.5rem, 2.0229rem + 2.0356vw, 3rem); }
h2 { font-size: 2rem; font-size: clamp(1.5rem, 1.0229rem + 2.0356vw, 2rem); }
h3 { font-size: 1.5rem; font-size: clamp(1.25rem, 1.0115rem + 1.0178vw, 1.5rem); }
h4 { font-size: 1.25rem; font-size: clamp(1.125rem, 1.0057rem + 0.5089vw, 1.25rem); }
h5 { font-size: 1rem; }
h6 { font-size: 1rem; }

p {

}

ul, ol {
  padding-inline-start: var(--layout-space-md);
}

pre, code {
  font-family: var(--heading-font-family);
}

a {
  color: var(--link-color);
  transition: color 0.3s;

  &:hover, &:focus {
    color: var(--link-color-hover);
  }

  &:focus-within {
    outline: 2px solid var(--link-color);
  }
}


/* Elements and utilities */
html {
  scroll-padding-block-start: var(--header-height);
  scroll-behavior: smooth;
}

[id]:not(.fullwidth) {
  scroll-margin-block-start: 1ex;
}


.img-fluid {
  max-width: 100%;
  height: auto;
}

.w-100 {
  width: 100%;
}


code {
  padding: .125rem;
  background-color: var(--color-50);

  pre & {
    display: block;
    padding: 1rem;
    white-space: pre;
    overflow: auto;
    border: 1px solid var(--color-500);
  }
}


.table-outer {
  display: block;
  width: 100%;
}

  .table {
    width: 100%;
    border-collapse: collapse;

    th, td {
      padding: var(--layout-space-sm);
      text-align: left;
      vertical-align: top;
      border: 1px solid var(--color-500);   
    }

    th {
      background-color: var(--color-100);
    }
  }


/* Scroll shadow for inline overflow */
/* Inspired by https://daverupert.com/2023/08/animation-timeline-scroll-shadows/ */
.scroll-shadow-inline {
  --shadow-color: rgb(0 0 0 / .2);
  --shadow-size: 8px;
  --shadow-spread: calc(var(--shadow-size) * -.5);

  overflow-x: auto;
  overflow-inline: auto;

  animation: scroll-shadow-inset linear;
  scroll-timeline: --scroll-shadow-timeline inline;
  animation-timeline: --scroll-shadow-timeline;

  /* This is shorthand for the above using an anonymous timeline instead of a named one */
  /* animation-timeline: scroll(self inline); */

  /* Non-essential styles */
  border: 1px solid var(--color-500);

  /* Stops child elements with a background appearing above the shadow */
  > * {
    mix-blend-mode: multiply;
  }

  /* Fallback */
  @supports not (animation-timeline: scroll(self inline)) {
    /* Background color should be the same as the element */
    --scroll-bg-color: #fff;
    background-image:
    linear-gradient(to right, var(--scroll-bg-color), var(--scroll-bg-color)), linear-gradient(to right, var(--scroll-bg-color), var(--scroll-bg-color)),
    linear-gradient(to right, var(--shadow-color), transparent), linear-gradient(to left, var(--shadow-color), transparent);   
    background-size: 
    calc(var(--shadow-size) * 4) 100%, calc(var(--shadow-size) * 4) 100%, 
    calc(var(--shadow-size) * 2) 100%, calc(var(--shadow-size) * 2) 100%;
    background-position: left center, right center, left center, right center;
    background-attachment: local, local, scroll, scroll;
    background-repeat: no-repeat;
  }  
}

.scroll-shadow-inline {
  &.table-outer {
    border-inline: 2px solid var(--color-500);
  }

  .table {
    th, td {
      &:first-child {
        border-inline-start: none;
      }

      &:last-child {
        border-inline-end: none;
      } 
    }
  }

  code& {
    --scroll-bg-color: var(--color-50);
  }
}

/* Shadow animations */
/* Right shadow, left shadow. Negative spread to prevent a shadow on the top and bottom of the element */
@keyframes scroll-shadow-inset {
  from {
    box-shadow: 
    inset calc(var(--shadow-size) * -2) 0 var(--shadow-size) var(--shadow-spread) var(--shadow-color), 
    inset calc(var(--shadow-size) * 0) 0 var(--shadow-size) var(--shadow-spread) var(--shadow-color);
  }  
  10%, 90% {
    box-shadow: 
    inset calc(var(--shadow-size) * -1) 0 var(--shadow-size) var(--shadow-spread) var(--shadow-color), 
    inset calc(var(--shadow-size) * 1) 0 var(--shadow-size) var(--shadow-spread) var(--shadow-color);
  }
  to {
    box-shadow: 
    inset calc(var(--shadow-size) * 0) 0 var(--shadow-size) var(--shadow-spread) var(--shadow-color), 
    inset calc(var(--shadow-size) * 2) 0 var(--shadow-size) var(--shadow-spread) var(--shadow-color);
  }
}

@keyframes scroll-shadow-inline-end {
  from {
    box-shadow: 
    calc(var(--shadow-size) * 0) 0 var(--shadow-size) 0 var(--shadow-color);
  }  
  10%, 90% {
    box-shadow: 
    calc(var(--shadow-size) * 1) 0 var(--shadow-size) 0 var(--shadow-color);
  }
  to {
    box-shadow: 
    calc(var(--shadow-size) * 2) 0 var(--shadow-size) 0 var(--shadow-color);
  }
}


/* Browser support message */
.unsupported {
  display: none;

  &.is-active {
    display: block;
  }
}