/*
BASIC
*/
* {
  box-sizing: border-box;
  text-align: left;
  border: none;
  outline: none;
  margin: 0px;
  padding: 0px;
}

/*
COLORS
 */
/* definition */
:root {
  --background: hsla(0, 0%, 100%, 100%);
  --background-transparent: hsla(0, 0%, 100%, 60%);
  --background-hover: hsla(0, 0%, 55%, 12%);
  --background-active: hsla(0, 0%, 55%, 12%);

  --layer: hsla(0, 0%, 96%, 60%);

  --surface: #f4f4f4;
  --surface-hover: #e8e8e8;
  --surface-active: #c6c6c6;

  --border: hsla(0, 0%, 0%, 10%);
  --surface-border: #8d8d8d;

  --text-normal: #161616;
  --text-on-color: #ffffff;

  --text-success: #24a148;
  --text-warn: #f1c21b;
  --text-error: #da1e28;
  --text-info: #0043ce;

  --link: #0f62fe;
  --link-hover: #0043ce;

  --primary: #0f62fe;
  --primary-hover: #0353e9;
  --primary-active: #002d9c;

  --danger: #da1e28;
  --danger-hover: #ba1b23;
  --danger-active: #750e13;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: hsla(0, 0%, 9%, 100%);
    --background-transparent: hsla(0, 0%, 9%, 60%);
    --background-hover: hsla(0, 0%, 55%, 16%);
    --background-active: hsla(0, 0%, 55%, 40%);

    --layer: hsla(0, 0%, 15%, 60%);

    --surface: #262626;
    --surface-hover: #333333;
    --surface-active: #6f6f6f;

    --border: hsla(0, 0%, 100%, 10%);
    --surface-border: #6f6f6f;

    --text-normal: #f4f4f4;

    --text-success: #42be65;
    --text-warn: #f1c21b;
    --text-error: #fa4d56;
    --text-info: #4589ff;

    --link: #78a9ff;
    --link-hover: #a6c8ff;
  }

  @media (display-mode: standalone) {
    :root {
      --background: hsla(0, 0%, 0%, 100%);
      --background-transparent: hsla(0, 0%, 0%, 60%);
      --layer: hsla(0, 0%, 0%, 60%);
    }
  }
}

/* implementation */
html {
  background-color: var(--background);
  color: var(--text-normal);
}

menu,
aside {
  background-color: var(--backdrop);
}

header {
  background-color: var(--layer);
}

.modal > div {
  background-color: var(--background);
}

* {
  color: inherit;
}

button,
input,
textarea,
select,
.surface,
.tile {
  background-color: var(--surface);
}
@media (hover: hover) {
  button:hover,
  select:hover,
  button.tile.ghost:hover,
  [selected]:active {
    background-color: var(--surface-hover);
  }
}
button:active,
select:active,
button.tile.ghost:active,
[selected] {
  background-color: var(--surface-active);
}
header button {
  background-color: transparent;
}

input:checked {
  background-color: var(--primary);
}

button.ghost:not(.tile) {
  background-color: transparent;
}

button.primary {
  background-color: var(--primary);
  color: var(--text-on-color);
}
@media (hover: hover) {
  button.primary:hover {
    background-color: var(--primary-hover);
  }
}
button.primary:active {
  background-color: var(--primary-active);
}

button.ghost {
  color: var(--link);
}
.tab-link[active] {
  color: var(--primary);
}
@media (hover: hover) {
  button.ghost:hover {
    background-color: var(--background-hover);
  }
}
button.ghost:active {
  background-color: var(--background-active);
}

button.danger {
  background-color: var(--danger);
  color: var(--text-on-color);
}
@media (hover: hover) {
  button.danger:hover {
    background-color: var(--danger-hover);
  }
}
button.danger:active {
  background-color: var(--danger-active);
}

/*
SIZES
 */
:root {
  /* gap */
  --grid-gap: 4px;
  --label-gap: 0.25rem;
  --label-tile-gap: 0.5rem;
  --link-gap: 1rem;
  --control-gap: 1.2rem;

  /* margin */
  --label-margin: 1rem;
  --content-margin: 0.75rem;

  /* padding */
  --control-padding: 1rem;
  --control-marker-padding: 0.7rem;
  --content-padding: 1rem;
  --modal-padding: 1.25rem;
  --link-padding-h: 0.8rem;

  /* size */
  --checkbox-size: 16px;

  --menu-width: 200px;
  --split-pane-width: 300px;

  --control-height: 42px;
  --header-height: 48px;

  --max-input-width: 24rem;
  --max-content-width: 38rem;

  /* safe */
  --safe-area-top: env(safe-area-inset-top);
  --safe-area-left: env(safe-area-inset-left);
  --safe-area-right: env(safe-area-inset-right);
  --safe-area-bottom: max(env(safe-area-inset-bottom), var(--control-padding));
}

/*
TEXT
 */
* {
  font-family: IBM Plex Sans;
  font-size: 1rem;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.6rem;
}

h3 {
  font-size: 1.4rem;
}

code {
  font-family: IBM Plex Mono;
}

.secondary,
.helper-text,
.error-text,
label {
  font-size: 0.9rem;
}

label span,
.helper-text,
.secondary,
.tab-link:not([active]) {
  opacity: 0.6;
}

@font-face {
  font-family: IBM Plex Sans;
  src: url("Fonts/IBMPlexSans-Regular.ttf");
}

@font-face {
  font-family: IBM Plex Mono;
  src: url("Fonts/IBMPlexMono-Regular.ttf");
}

@font-face {
  font-family: IBM Plex Serif;
  src: url("Fonts/IBMPlexSerif-Regular.ttf");
}

/*
MAIN
 */
/* appearance */
input[type="checkbox"],
input[type="radio"],
select {
  appearance: none;
  --webkit-appearance: none;
  --mpz-appearance: none;
}

/* backdrop-filter */
header,
menu {
  backdrop-filter: blur(70px);
}

/* border, outline, etc */
button,
input,
select,
textarea {
  border: none;
}

@media (min-width: 640px) {
  .modal > div {
    border: 1px solid var(--surface-border);
  }
}

input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not(
    label.tile *
  ),
label.tile,
select:not(label.tile *),
textarea:not(label.tile *) {
  border-bottom: 1px solid var(--surface-border);
}

hr {
  border-bottom: 1px solid var(--border);
}

menu {
  border-right: 1px solid var(--border);
}

input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):focus:not(
    label.tile *
  ),
label.tile:has(input:focus),
label.tile:has(textarea:focus),
textarea:focus:not(label.tile *),
[selected] {
  outline: var(--grid-gap) solid var(--primary);
}

/* border-radius */
* {
  border-radius: 0px;
}

input[type="radio"] {
  border-radius: 100%;
}

/* cursor */
a,
.tab-link {
  cursor: pointer;
}

/* display etc */
.align-start {
  align-items: start;
}

button:not(.tile),
input,
header,
label.inline,
.modal,
select,
textarea,
.align-right,
.tile:not(label) {
  align-items: center;
}

.align-end {
  align-items: end;
}

label,
label * {
  display: block;
}

header,
input[type="checkbox"],
input[type="radio"],
label.inline,
main,
menu,
.flex-column,
.flex-row,
.modal[open],
.modal > div,
.tile,
.tile > div {
  display: flex;
}

.grid {
  display: grid;
}

button:not(.tile),
input,
select,
textarea {
  display: inline-flex;
}

.modal,
[hidden] {
  display: none;
}

main,
.flex,
.tile,
.tile > div {
  flex: 1;
}

menu,
.flex-column,
.modal > div,
.tile > div {
  flex-direction: column;
}

button,
.tile {
  gap: var(--control-gap);
}

.grid {
  gap: var(--grid-gap);
}

header,
button,
.justify-apart {
  justify-content: space-between;
}

.justify-start,
.tile {
  justify-content: start;
}

header button,
input[type="checkbox"],
input[type="radio"],
.justify-center,
.modal {
  justify-content: center;
}

.justify-end {
  justify-content: end;
}

/* opacity */
[disabled] {
  opacity: 0.5;
}

/* padding, margin, etc */
h1,
h2,
h3,
main,
p {
  margin: 0px;
}

hr {
  margin: var(--content-margin) 0px;
}

:is(code, p):not(:last-child) {
  margin-bottom: var(--content-margin);
}

label:not(.tile) {
  margin-bottom: var(--label-margin);
}

label:not(.tile) > span:first-child {
  margin-bottom: var(--label-gap);
}

label.tile {
  margin-bottom: var(--grid-gap);
}

label.tile > span:first-child {
  margin-top: var(--label-tile-gap);
}

menu {
  padding-top: 10px;
}

input[type="color"],
input[type="checkbox"],
input[type="radio"],
label.tile:has(> span.icon) * {
  padding: 0px;
}

article > div {
  padding: calc(var(--header-height) + 20px) var(--content-padding);
}

button:not(.tile):not(header *),
input,
select {
  padding: 0px var(--control-padding);
}

menu h1,
textarea,
.tile:not(label) {
  padding: var(--control-padding);
}

.modal main {
  padding: var(--modal-padding);
}

label.tile {
  padding: var(--label-gap) 0px;
}

header {
  padding-left: var(--content-padding);
}

label.tile:has(> span.icon) {
  padding-left: var(--control-padding);
}

label {
  text-indent: var(--control-padding);
}

label.tile:has(> span.icon) {
  text-indent: 0px;
}

/* pointer-events */
[disabled] {
  pointer-events: none;
}

/* position etc */
select + .icon {
  bottom: 0px;
}

article > div,
header,
select + .icon {
  position: absolute;
}

.modal {
  position: fixed;
}

article,
input,
label {
  position: relative;
}

article > div,
header,
.modal {
  top: 0;
}

article > div,
header,
.modal {
  left: 0px;
}

article > div,
header,
.modal {
  right: 0px;
}

select + .icon {
  right: var(--control-marker-padding);
}

article > div,
.modal {
  bottom: 0px;
}

/* size */
article,
main,
select + .icon,
.modal main {
  height: 100%;
}

@media (max-width: 640px) {
  .modal > div {
    height: 100%;
  }
}

button:not(.tile):not(header *),
input:not([type="checkbox"]):not([type="radio"]),
select,
select + .icon,
textarea {
  height: var(--control-height);
}

header,
header button {
  height: var(--header-height);
}

p,
.width-content,
.modal > div {
  max-width: var(--max-content-width);
}

input,
label,
select,
textarea,
.width-input {
  max-width: var(--max-input-width);
}

article {
  min-width: 100%;
}

.width-50 {
  width: 50%;
}

article,
input:not([type="checkbox"]):not([type="radio"]),
header,
main,
select,
textarea,
.modal > div,
.width-content,
.width-input,
.tile,
.tile > div,
.width-100 {
  width: 100%;
}

header button {
  width: var(--header-height);
}

menu {
  width: var(--menu-width);
}

input[type="checkbox"],
input[type="radio"] {
  width: 16px;
  height: 16px;
}

/* text-decoration */
a {
  text-decoration: none;
}

/* z-index */
header,
menu {
  z-index: 1;
}

.modal {
  z-index: 2;
}

.modal > div {
  z-index: 2;
}

/*
PSEUDO
 */
input[type="checkbox"]:checked::before {
  content: "check";
  font-size: 70% !important;
  color: var(--text-on-color);
}

input[type="radio"]:checked::before {
  content: "";

  background-color: var(--text-on-color);
  border-radius: 100%;

  --inset: 4px;
  position: absolute;
  top: var(--inset);
  left: var(--inset);
  right: var(--inset);
  bottom: var(--inset);
}

.modal::before {
  content: "";

  position: absolute;
  top: 0px;
  left: 0px;
  right: 0px;
  bottom: 0px;

  background-color: var(--background);
  opacity: 0.6;
}

/*
LAYOUT
*/
/* basic */
body {
  display: flex;
  flex-direction: column-reverse;
}

body,
.tab-link {
  width: 100%;
}

body,
body > * {
  margin: 0px;
  height: 100%;
}

main {
  height: 100%;

  padding-left: var(--safe-area-left);
  padding-right: var(--safe-area-right);
  padding-top: var(--safe-area-top);
}

menu {
  width: 100%;
  height: calc(var(--header-height) + var(--safe-area-bottom));

  position: absolute;
  bottom: 0px;
  left: 0px;
  right: 0px;

  background-color: var(--background-transparent);
  border-right: none;

  flex-direction: row;
  justify-content: space-around;

  padding-top: 0px;
  padding-bottom: var(--safe-area-bottom);
}

.tab-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0px;

  font-size: 0.5rem;

  height: var(--header-height);
  padding: var(--link-padding-h) var(--control-padding);
}

/* overflow */
body {
  overflow: hidden;
}

menu,
article > div {
  overflow: auto;
}

article,
body,
main {
  overflow: hidden;
}

main {
  overflow-x: scroll;
}

/* scrolling */
main {
  scroll-behavior: smooth;
}

article {
  scroll-snap-align: start;
}

main {
  scroll-snap-type: x mandatory;
}

/* desktop */
@media (min-width: 640px) {
  .mobile-only {
    display: none;
  }

  body {
    flex-direction: row;
  }

  main.split {
    display: grid;
    grid-template-columns: var(--split-pane-width) 1fr;
  }

  menu,
  main.split > article:first-of-type {
    border-right: 1px solid var(--border);
  }

  menu {
    position: static;

    width: var(--menu-width);
    height: 100%;

    flex-direction: column;
    justify-content: start;
    padding-top: 20px;
  }

  .tab-link {
    width: 100%;
    height: var(--control-height);

    flex-direction: row;
    gap: var(--link-gap);

    font-size: 1rem;
  }
}

/*
ICONS
 */
input[type="checkbox"],
.tile.arrow-right::after,
.icon {
  font-family: "Material Symbols Sharp";
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

@font-face {
  font-family: "Material Symbols Sharp";
  font-style: normal;
  font-weight: 300;
  src: url("Icons/material-icons.woff") format("woff");
}