system.css/style.css

/**
 * system.css
 * Copyright (c) 2022 Sakun Acharige <sakun.co>
 */

:root {
  --box-shadow: 2px 2px;

  /* Spacing */
  --element-spacing: 8px;
  --grouped-element-spacing: 6px;
  --radio-width: 12px;
  --checkbox-width: 13px;
  --radio-label-spacing: 6px;

  /* Some detailed computations for radio buttons and checkboxes (from 98.css) */
  --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: 6px;
  --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: 12px;
  --checkmark-top: 2px;
  --checkmark-left: 2px;

  /* ---- ⚫️ Colors ⚪️ ---- */
  /* Base Tokens */
  --sys-color-white: #FFFFFF;
  --sys-color-black: #000000;
  --sys-color-grey: #A5A5A5;
  --sys-color-darkgrey: #B6B7B8;

  /* Theme Tokens */
  --primary: var(--sys-color-white);
  --secondary: var(--sys-color-black);
  --tertiary: var(--sys-color-grey);

  /* Component Tokens */
  --disabled: var(--sys-color-darkgrey);
}

@font-face {
  font-family: Chicago;
  src: url("fonts/ChicagoFLF.woff") format("woff");
  src: url("fonts/ChicagoFLF.woff2") format("woff2");
}
@font-face {
  font-family: Monaco;
  src: url("fonts/monaco.woff") format("woff");
  src: url("fonts/monaco.woff2") format("woff2");
}

/* Fonts below are recreations by Giles Booth */
@font-face {
  font-family: Chicago_12;
  src: url("fonts/ChiKareGo2.woff") format("woff");
  src: url("fonts/ChiKareGo2.woff2") format("woff2");
}
@font-face {
  font-family: Geneva_9;
  src: url("fonts/FindersKeepers.woff") format("woff");
  src: url("fonts/FindersKeepers.woff2") format("woff2");
}
::-webkit-scrollbar {
  width: 22px;
  background-color: var(--primary);
}

::-webkit-scrollbar-track {
  background: linear-gradient(45deg, var(--secondary) 25%, transparent 25%, transparent 75%, var(--secondary) 75%, var(--secondary)), linear-gradient(45deg, var(--secondary) 25%, transparent 25%, transparent 75%, var(--secondary) 75%, var(--secondary));
  background-color: var(--primary);
  background-size: 4px 4px;
  background-position: 0 0, 2px 2px;
  width: 10px;
  border-left: 3px solid var(--secondary);
}

::-webkit-scrollbar-thumb {
  width: 20px;
  box-sizing: content-box;
  background-color: var(--primary);
  border: 2px solid var(--secondary);
  border-right: none;
}

::-webkit-scrollbar-button:horizontal:start:decrement,
::-webkit-scrollbar-button:horizontal:end:increment,
::-webkit-scrollbar-button:vertical:start:decrement,
::-webkit-scrollbar-button:vertical:end:increment {
  display: block;
}

::-webkit-scrollbar-button:vertical:start {
  background-repeat: no-repeat;
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-up.svg");
}
::-webkit-scrollbar-button:vertical:start:active {
  background-repeat: no-repeat;
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-up-active.svg");
}
::-webkit-scrollbar-button:vertical:end {
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-down.svg");
}
::-webkit-scrollbar-button:vertical:end:active {
  background-repeat: no-repeat;
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-down-active.svg");
}

::-webkit-scrollbar-button:horizontal:start {
  background-repeat: no-repeat;
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-left.svg");
}
::-webkit-scrollbar-button:horizontal:start:active {
  background-repeat: no-repeat;
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-left-active.svg");
}
::-webkit-scrollbar-button:horizontal:end {
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-right.svg");
}
::-webkit-scrollbar-button:horizontal:end:active {
  background-repeat: no-repeat;
  height: 23.38px;
  background-image: svg-load("./icon/scrollbar-right-active.svg");
}

body {
  background: linear-gradient(90deg, var(--primary) 21px, transparent 1%) center, linear-gradient(var(--primary) 21px, transparent 1%) center, var(--secondary);
  background-size: 22px 22px;
  background-attachment: fixed;
}

a {
  color: var(--secondary);
  text-decoration: underline;
}

hr {
  border-top: 0.15em solid var(--secondary);
}

/*.container {
  width: 50%;
  margin: 0 auto;
  display: block;
}
*/
h1,
.heading {
  font-family: Chicago;
  font-size: 1em;
}

h2 {
  font-family: Chicago;
  font-size: 2em;
}

/* buttons */
.standard-button {
  display: block;
  min-width: 59px;
  min-height: 20px;
}

/* dialogs & modals */
.standard-dialog {
  border: 2px solid;
  padding: 10px;
  box-shadow: var(--box-shadow);
  background-color: var(--primary);
}

.modal-dialog, .alert-box {
  width: auto;
  padding: 13px;
  background: var(--primary);
}

.modal-contents, .alert-contents {
  padding: 10px;
}

.modeless-dialog {
  height: 100%;
  padding: 1.5rem 0.5rem 0.5rem 0.5rem;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.inner-border {
  border-color: var(--secondary);
  border-top: 3.5px solid;
  border-bottom: 3.5px solid;
  border-left: 5px solid;
  border-right: 5px solid;
}
.outer-border {
  border-color: var(--secondary);
  border: 2px solid;
  padding: 3px;
}

/* title bar */
.title-bar {
  flex: none;
  display: flex;
  align-items: center;
  height: 1.5rem;
  margin: 0.1rem 0;
  padding: 0.2rem 0.1rem;
  background: linear-gradient(var(--secondary) 50%, transparent 50%);
  background-size: 6.6666666667% 13.3333333333%;
  background-clip: content-box;
}
.title-bar .title {
  padding: 0 0.5em;
  margin: 0 auto;
  font-size: 1.5rem;
  font-weight: bold;
  line-height: 1.1;
  text-align: center;
  background: var(--primary);
  cursor: default;
  font-family: Chicago_12;
}

.inactive-title-bar {
  flex: none;
  display: flex;
  align-items: center;
  height: 1.5rem;
  margin: 0.1rem 0;
  padding: 0.2rem 0.1rem;
  background-size: 6.6666666667% 13.3333333333%;
  background-clip: content-box;
}
.inactive-title-bar .title {
  padding: 0 0.5em;
  margin: 0 auto;
  font-size: 1.5rem;
  font-weight: bold;
  line-height: 1.1;
  text-align: center;
  cursor: default;
  font-family: Chicago_12;
  color: var(--tertiary);
}

.title-bar button {
  position: relative;
  display: block;
  width: 40px;
  height: 40px;
  margin: 0 0.2rem;
  border: 4px solid var(--secondary);
  background-color: var(--primary);
  cursor: pointer;
  transform: scale(0.5);
}
.title-bar button span {
  position: absolute !important;
  clip: rect(1px 1px 1px 1px);
  /* IE6, IE7 */
  clip: rect(1px, 1px, 1px, 1px);
}
.title-bar button.close::before, .title-bar button.close::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
}
.title-bar button.close::before {
  background: linear-gradient(var(--secondary) 0%, var(--secondary) 100%) left center, linear-gradient(var(--secondary) 0%, var(--secondary) 100%) right center, linear-gradient(var(--secondary) 0%, var(--secondary) 100%) center top, linear-gradient(var(--secondary) 0%, var(--secondary) 100%) center bottom;
  background-size: 30% 4px, 30% 4px, 4px 30%, 4px 30%;
  background-repeat: no-repeat;
}
.title-bar button.close::after {
  background: linear-gradient(var(--secondary) 0%, var(--secondary) 100%) left center, linear-gradient(var(--secondary) 0%, var(--secondary) 100%) right center, linear-gradient(var(--secondary) 0%, var(--secondary) 100%) center top, linear-gradient(var(--secondary) 0%, var(--secondary) 100%) center bottom;
  background-size: 22.5% 3.6363636364px, 22.5% 3.6363636364px, 3.6363636364px 22.5%, 3.6363636364px 22.5%;
  background-repeat: no-repeat;
  transform: rotate(45deg) scale(1.1);
}
.title-bar button.close:active::before, .title-bar button.close:active::after {
  opacity: 1;
}
.title-bar button.resize {
  background: linear-gradient(var(--secondary) 0%, var(--secondary) 100%) left 58%, linear-gradient(to bottom, var(--secondary) 0%, var(--secondary) 100%) 58% top;
  background-size: 60% 4px, 4px 60%;
  background-repeat: no-repeat;
  background-color: var(--primary);
}
.title-bar button.resize:active {
  background: var(--primary);
}
.title-bar button.hidden {
  visibility: hidden;
}

.window {
  flex-direction: column;
  margin: 1rem;
  min-width: 320px;
  overflow: hidden;
  background-color: var(--primary);
  border: 0.1em solid var(--secondary);
  font-family: "Inconsolata", Menlo, Chicago, Geneva;
}
.window-pane {
  overflow-y: scroll;
  height: 100%;
  padding: 1rem 2rem;
  font-size: 18px;
  letter-spacing: -0.025em;
  /*margin-bottom: 1rem;*/
}
.window-pane::-webkit-scrollbar {
  width: 22px;
  background-color: var(--primary);
}
.window-pane::-webkit-scrollbar-track {
  background: linear-gradient(45deg, var(--secondary) 25%, transparent 25%, transparent 75%, var(--secondary) 75%, var(--secondary)), linear-gradient(45deg, var(--secondary) 25%, transparent 25%, transparent 75%, var(--secondary) 75%, var(--secondary));
  background-color: var(--primary);
  background-size: 4px 4px;
  background-position: 0 0, 2px 2px;
  width: 10px;
  border-left: 4px solid var(--secondary);
}
.window-pane::-webkit-scrollbar-thumb {
  width: 20px;
  box-sizing: content-box;
  background-color: var(--primary);
  border: 2px solid var(--secondary);
  border-right: none;
}

.separator {
  flex: none;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  /*padding: 0.4rem 0.8rem;*/
  border-top: 0.1rem solid var(--secondary);
  border-width: 0.1rem 0;
  font-size: 1rem;
}

.details-bar {
  flex: none;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  padding: 0.4rem 0.8rem;
  border: 0.1rem solid var(--secondary);
  border-width: 0.1rem 0;
  font-size: 1rem;
  font-weight: 100;
}


/* buttons */
.btn, .btn-default {
  min-height: 20px;
  min-width: 59px;
  padding: 0 20px;
  text-align:center;
  background: var(--primary);
  border-style: solid;
  border-width: 5.5px;
  border-image: url("./icon/button.svg") 30 stretch;
  color: var(--secondary);
  text-align: center;
  text-decoration: none;
  font-size: 18px;
  font-family: Chicago_12;
  cursor: pointer;
}

.btn:active {
  background: var(--secondary);
  border-radius:6px;
  color: var(--primary);
  font-family: Chicago_12;
}

.btn:disabled {
  min-height: 20px;
  min-width: 59px;
  text-align:center;
  background: var(--primary);
  border-style: solid;
  border-width: 5.5px;
  border-image: url("./icon/button.svg") 30 stretch;
  color: var(--disabled);
  text-align: center;
  text-decoration: none;
  font-size: 18px;
  font-family: Chicago_12;
}

.btn-default {
  border-image: url("./icon/button-default.svg") 60 stretch;
  border-width: 0.5em;
}

.btn-default:active {
  border-radius: 12px;
}

/* text input */
input  {
  border: 1.5px solid var(--secondary);
  font-family: Chicago_12;
  font-size: 18px;
  padding-left: 5px;
}

input:focus  {
  outline:none;
}

input[type="text"]:focus-visible,
input[type="email"]:focus-visible,
input[type="password"]:focus-visible,
input[type="number"]:focus-visible,
input[type="date"]:focus-visible,
input[type="time"]:focus-visible,
input[type="datetime"]:focus-visible,
input[type="datetime-local"]:focus-visible,
input[type="month"]:focus-visible,
input[type="week"]:focus-visible,
input[type="search"]:focus-visible,
input[type="tel"]:focus-visible,
input[type="color"]:focus-visible,
textarea:focus {
  background: var(--secondary);
  color: var(--primary);
}

input[type="radio"] + label::before {
  border-image: svg-load("./icon/radio-border.svg");
  width: 20px;
  height: 20px;
}

input[type="checkbox"] + label::before {
  border: 1.5px solid var(--secondary);
  width: 20px;
  height: 20px;
}

input[type="radio"],
input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  margin: 0;
  background: 0;
  position: fixed;
  opacity: 0;
  border: none;
}

input[type="radio"] + label,
input[type="checkbox"] + label {
  line-height: 13px;
  padding-left: 5px;
}

input[type="radio"] + label {
  position: relative;
  margin-left: var(--radio-total-width);
}

input[type="radio"] + label::before {
  content: "";
  position: absolute;
  top: 0;
  left: calc(-1 * (var(--radio-total-width-precalc)));
  display: inline-block;
  width: var(--radio-width);
  height: var(--radio-width);
  margin-right: var(--radio-label-spacing);
  background: svg-load("./icon/radio-border.svg");
}

input[type="radio"]:focus-visible + label::before,
input[type="radio"]:hover + label::before {
  background-image: svg-load("./icon/radio-border-focused.svg");
}

input[type="radio"]:checked + label::after {
  content: "";
  display: block;
  width: var(--radio-dot-width);
  height: var(--radio-dot-width);
  top: var(--radio-dot-top);
  left: var(--radio-dot-left);
  position: absolute;
  background: svg-load("./icon/radio-dot.svg");
}

input[type="checkbox"] + label {
  position: relative;
  margin-left: var(--checkbox-total-width);
}

input[type="checkbox"] + label::before {
  content: "";
  position: absolute;
  left: calc(-1 * (var(--checkbox-total-width-precalc)));
  display: inline-block;
  width: var(--checkbox-width);
  height: var(--checkbox-width);
  background: var(--button-highlight);
  box-shadow: var(--border-field);
  margin-right: var(--radio-label-spacing);
}

input[type="checkbox"]:focus-visible + label::before,
input[type="checkbox"]:hover + label::before {
  outline: 1px solid var(--secondary);
}

input[type="checkbox"]:checked + label::after {
  content: "";
  display: block;
  width: var(--checkmark-width);
  height: var(--checkmark-width);
  position: absolute;
  top: var(--checkmark-top);
  left: calc(
    -1 * (var(--checkbox-total-width-precalc)) + var(--checkmark-left)
  );
  background: svg-load("./icon/checkmark.svg");
  background-repeat: no-repeat;
}


input[type="checkbox"][disabled] + label::before {
  background: var(--surface);
}

input[type="checkbox"][disabled]:checked + label::after {
  background: svg-load("./icon/checkmark-disabled.svg");
}

.field-row {
  display: flex;
  align-items: center;
  font-family: Chicago_12;
  font-size: 1em;
}

[class^="field-row"] + [class^="field-row"] {
  margin-top: var(--grouped-element-spacing);
}

.field-row > * + * {
  margin-left: var(--grouped-element-spacing);
}

.apple {
  background: svg-load("./icon/apple.svg");
  height: 22px;
  width: 18px;
  background-repeat: no-repeat;
  border: none;
  display: inline-block;
  margin-right: 2px;
}

/* Form */
form {
  font-family: "Inconsolata", Menlo, Chicago, Geneva;
  font-size:14px;
}

/* select menu */
select {
  border: 1.5px solid;
  height: auto;
  width: 10rem;
  font-family: Chicago_12;
  font-size: 18px;
  background-image: svg-load("./icon/select-button.svg");
  background-position: top 2px right 2px;
  background-repeat: no-repeat;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  position: relative;
  padding-left: 20px;
  -webkit-box-shadow: 2px 8px 0 0px var(--secondary);
	   -moz-box-shadow: 2px 8px 0 0px var(--secondary);
	        box-shadow: 2px 2px 0 -1px var(--secondary);
}

/* menu-bar */
ul[role] {
  margin: 0;
  padding: 0;
  list-style: none;
  cursor: pointer;
  font-family: Chicago_12;
  font-size: 1em;
}
ul[role="menu-bar"] {
  display: flex;
  background: var(--primary);
}
ul[role="menu-bar"] > [role="menu-item"] {
  position: relative;
  padding: 6px 10px;
}
ul[role="menu-bar"] > [role="menu-item"]:focus, ul[role="menu-bar"] > [role="menu-item"]:focus-within, ul[role="menu-bar"] > [role="menu-item"]:hover {
  background: var(--secondary);
  color: var(--primary);
  outline: none;
}
ul[role="menu"] {
  position: relative;
  min-width: 200px;
  background: var(--primary);
  color: initial;
  border: 1px solid;
  box-shadow: var(--box-shadow);
}
ul[role="menu"]::before {
  content: "";
  pointer-events: none;
  position: absolute;
  left: 28px;
  width: 2px;
  box-shadow: inset 1px 0 rgba(0, 0, 0, 0.15), inset -1px 0 var(--primary);
}
[role="menu-item"] ul[role="menu"] {
  display: none;
  position: absolute;
  left: 0;
  top: 100%;
  z-index: 99;
}
ul[role="menu"] > [role="menu-item"] > a, ul[role="menu"] > [role="menu-item"] > button, ul[role="menu"] > [role="menu-item"][aria-haspopup="true"] {
  all: unset;
  position: relative;
  padding: 5px 20px;
  display: block;
  width: 100%;
  box-sizing: border-box;

}
ul[role="menu"] > [role="menu-item"] > a:hover, ul[role="menu"] > [role="menu-item"] > button:hover, ul[role="menu"] > [role="menu-item"][aria-haspopup="true"]:hover, ul[role="menu"] > [role="menu-item"] > a:focus, ul[role="menu"] > [role="menu-item"] > button:focus, ul[role="menu"] > [role="menu-item"][aria-haspopup="true"]:focus {
  background: var(--secondary);
  color: var(--primary);
}
ul [role="menu-item"] {
  position: relative;
}
ul [role="menu-item"]:focus > [role="menu"], ul [role="menu-item"]:focus-within > [role="menu"] {
  display: block;
}
ul [role="menu-item"].divider::after {
  content: "";
  pointer-events: none;
  display: block;
  padding: 0;
  border-top: 1.5px dotted var(--secondary);
}

/* styles specific to demo page */
.menu-items > li {
  margin-bottom: 1rem;
}