/**
 * 98.css
 * Copyright (c) 2020 Jordan Scales <thatjdanisso.cool>
 * https://github.com/jdan/98.css/blob/main/LICENSE
 */

:root {
  /* Color */
  --text-color: #222222;
  --surface: #c0c0c0;
  --button-highlight: #ffffff;
  --button-face: #dfdfdf;
  --button-shadow: #808080;
  --window-frame: #0a0a0a;
  --dialog-blue: #000080;
  --dialog-blue-light: #1084d0;
  --dialog-gray: #808080;
  --dialog-gray-light: #b5b5b5;
  --link-blue: #0000ff;

  /* Spacing */
  --element-spacing: 8px;
  --grouped-button-spacing: 4px;
  --grouped-element-spacing: 6px;
  --radio-width: 12px;
  --checkbox-width: 13px;
  --radio-label-spacing: 6px;
  --range-track-height: 4px;
  --range-spacing: 10px;

  /* Some detailed computations for radio buttons and checkboxes */
  --radio-total-width-precalc: var(--radio-width) + var(--radio-label-spacing);
  --radio-total-width: calc(var(--radio-total-width-precalc));
  --radio-left: calc(-1 * var(--radio-total-width-precalc));
  --radio-dot-width: 4px;
  --radio-dot-top: calc(var(--radio-width) / 2 - var(--radio-dot-width) / 2);
  --radio-dot-left: calc(
    -1 * (var(--radio-total-width-precalc)) + var(--radio-width) / 2 - var(
        --radio-dot-width
      ) / 2
  );

  --checkbox-total-width-precalc: var(--checkbox-width) +
    var(--radio-label-spacing);
  --checkbox-total-width: calc(var(--checkbox-total-width-precalc));
  --checkbox-left: calc(-1 * var(--checkbox-total-width-precalc));
  --checkmark-width: 7px;
  --checkmark-left: 3px;

  /* Borders */
  --border-width: 1px;
  --border-raised-outer: inset -1px -1px var(--window-frame),
    inset 1px 1px var(--button-highlight);
  --border-raised-inner: inset -2px -2px var(--button-shadow),
    inset 2px 2px var(--button-face);
  --border-sunken-outer: inset -1px -1px var(--button-highlight),
    inset 1px 1px var(--window-frame);
  --border-sunken-inner: inset -2px -2px var(--button-face),
    inset 2px 2px var(--button-shadow);
  --default-button-border-raised-outer: inset -2px -2px var(--window-frame), inset 1px 1px var(--window-frame);
  --default-button-border-raised-inner: inset 2px 2px var(--button-highlight), inset -3px -3px var(--button-shadow), inset 3px 3px var(--button-face);
  --default-button-border-sunken-outer: inset 2px 2px var(--window-frame), inset -1px -1px var(--window-frame);
  --default-button-border-sunken-inner: inset -2px -2px var(--button-highlight), inset 3px 3px var(--button-shadow), inset -3px -3px var(--button-face);


  /* Window borders flip button-face and button-highlight */
  --border-window-outer: inset -1px -1px var(--window-frame),
    inset 1px 1px var(--button-face);
  --border-window-inner: inset -2px -2px var(--button-shadow),
    inset 2px 2px var(--button-highlight);

  /* Field borders (checkbox, input, etc) flip window-frame and button-shadow */
  --border-field: inset -1px -1px var(--button-highlight),
    inset 1px 1px var(--button-shadow), inset -2px -2px var(--button-face),
    inset 2px 2px var(--window-frame);

  /* Tabs */
  --border-tab: inset -1px 0 var(--window-frame),
    inset 1px 1px var(--button-face),
    inset -2px 0 var(--button-shadow),
    inset 2px 2px var(--button-highlight)
}

.nav a[role=button] {
  box-sizing: border-box;
  border: 2px solid black;
  color: transparent;
  text-shadow: 0 0 var(--text-color);
  background: var(--surface);
  box-shadow: var(--border-raised-outer), var(--border-raised-inner);
  border-radius: 0;
  padding: 0 12px;
}

.nav a[role=button].default {
  box-shadow: var(--default-button-border-raised-outer), var(--default-button-border-raised-inner);
}

.vertical-bar {
  width: 4px;
  height: 20px;
  background: #c0c0c0;
  box-shadow: var(--border-raised-outer), var(--border-raised-inner);
}

.nav a[role=button]:not(.disabled):active {
  box-shadow: var(--border-sunken-outer), var(--border-sunken-inner);
  text-shadow: 1px 1px var(--text-color);
}

.nav a[role=button].default:not(.disabled):active {
  box-shadow: var(--default-button-border-sunken-outer), var(--default-button-border-sunken-inner);
}

@media (not(hover)) {
  .nav a[role=button]:not(:disabled):hover {
    box-shadow: var(--border-sunken-outer), var(--border-sunken-inner);
  }
}

.nav a[role=button]:focus {
  outline: 1px dotted #000000;
  outline-offset: -4px;
}

.nav a[role=button]::-moz-focus-inner {
  border: 0;
}

.nav .disabled {
  background: white !important;
  color: var(--button-shadow) !important;
  text-shadow: 1px 1px 0 var(--button-highlight) !important;
}

.nav .disabled:hover {
  cursor: not-allowed;
}