/* variables */
:root {
  /* colors */
  --color-grey-dark: #323131;
  --color-grey-normal: #c8c8c8;
  --color-grey-light: #e8e8e8;

  --color-grey-dark-rgba: rgba(50, 49, 49, 1);
  --color-grey-dark-rgba-unvisible: rgba(50, 49, 49, 0);
  --color-grey-normal-rgba: rgba(200, 200, 200, 1);
  --color-grey-normal-rgba-unvisible: rgba(200, 200, 200, 0);
  --color-grey-light-rgba: rgba(232, 232, 232, 1);
  --color-grey-light-rgba-unvisible: rgba(232, 232, 232, 0);

  /* padding */
  --padding-body: 9.375vw; /* 120px / 1280px */

  /* font family */
  --font-family-duo: "iA-Writer-duo-V", sans-serif; /* Monospace */
  --font-family-quattro: "iA-Writer-Quattro-V", sans-serif; /* Sans serif */

  /* font size */
  --font-size-base: 1rem;
  --font-size-scale: 1.44;
  --font-size-demi-scale: 1.2;
  --font-size-text: calc(
    var(--font-size-base) * var(--font-size-scale)
  ); /* 23px */
  --font-size-caption: calc(
    var(--font-size-base) * var(--font-size-demi-scale)
  ); /* 19px */
  --font-size-table: var(--font-size-caption);
  --font-size-logo: calc(
    calc(var(--font-size-h1) * var(--font-size-scale)) *
      var(--font-size-demi-scale)
  ); /* 171px */
  --font-size-introduction: var(--font-size-h4); /* 33px */
  --font-size-h1: calc(var(--font-size-h2) * var(--font-size-scale)); /* 99px */
  --font-size-h2: calc(var(--font-size-h3) * var(--font-size-scale)); /* 69px */
  --font-size-h3: calc(var(--font-size-h4) * var(--font-size-scale)); /* 48px */
  --font-size-h4: calc(var(--font-size-h5) * var(--font-size-scale)); /* 33px */
  --font-size-h5: calc(var(--font-size-text)); /* 23px */

  /* font weight */
  --font-weight-text: 450;
  --font-weight-semi-bold: 650;
  --font-weight-bold: 700;

  /* line height */
  --line-height-text: 140%;
  --line-height-heading: 120%;

  /* margin */
  --margin-heading: 1.5em;
  --margin-text: 0.5em;
  --margin-list: 0.25em;
  --margin-right-p: calc(var(--padding-body) * 2);

  /* linear gradient */
  --linear-gradient-dotted: linear-gradient(
    to right,
    currentColor 50%,
    transparent 50%
  );
  --linear-gradient-solid: linear-gradient(
    to right,
    currentColor 100%,
    transparent 100%
  );
  --linear-gradient-background-size: 0.2em 0.09em;
}

/* scrollbar */
/* Works on Firefox */

body,
.layer {
  scrollbar-width: thin;
  scrollbar-color: var(--color-grey-dark) transparent;
}

/* Works on Chrome, Edge, and Safari */

body::-webkit-scrollbar,
.layer::-webkit-scrollbar,
table::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

body::-webkit-scrollbar-track,
.layer::-webkit-scrollbar-track,
table::-webkit-scrollbar-track {
  background: transparent;
}

body::-webkit-scrollbar-thumb,
.layer::-webkit-scrollbar-thumb,
table::-webkit-scrollbar-thumb {
  background-color: var(--color-grey-dark);
  border-radius: 0px;
  border: none;
}

figure {
  width: 100%;
  margin: 3rem 0; /*48px 0px */
}

img {
  display: block;
  width: 100%;
  width: 100%;
}

.lazysrcset-ratio {
  position: relative;
}

.lazysrcset-ratio > img {
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}
.lazysrcset-ratio > img:after {
  display: block;
  width: 100%;
  height: 0;
  content: "";
}

/* html */
body,
html,
p {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-quattro);
}

body {
  background-color: var(--color-grey-dark);
  color: var(--color-grey-light);
  font-size: var(--font-size-text);
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

button {
  background-color: transparent;
  border: none;
  display: inline-block;
  font-size: inherit;
  color: inherit;
}

a {
  cursor: none;
}

hr {
  color: inherit;
  background-repeat: repeat-x;
  background-image: var(--linear-gradient-dotted);
  background-position: bottom;
  background-size: var(--linear-gradient-background-size);
  border: none;
  height: 0.25rem;
  margin: 2rem 0;
}

a,
button {
  pointer-events: all;
}

/* texts */
@font-face {
  font-family: "iA-Writer-duo-V";
  font-style: normal;
  src: url("/assets/fonts/iAWriterDuoV.woff2");
}
@font-face {
  font-family: "iA-Writer-duo-V";
  font-style: italic;
  src: url("/assets/fonts/iAWriterDuoV-Italic.woff2");
}
@font-face {
  font-family: "iA-Writer-Quattro-V";
  font-style: normal;
  src: url("/assets/fonts/iAWriterQuattroV.woff2");
}
@font-face {
  font-family: "iA-Writer-Quattro-V";
  font-style: italic;
  src: url("/assets/fonts/iAWriterQuattroV-Italic.woff2");
}

h1,
h2,
h3,
h4,
h5 {
  color: var(--color-grey-dark);
  font-family: var(--font-family-duo);
  font-style: normal;
  font-variation-settings: "wght" var(--font-weight-bold);
  line-height: var(--line-height-heading);
  margin-top: var(--margin-heading);
  margin-bottom: var(--margin-text);
  overflow-wrap: break-word;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
  hyphens: auto;
}

h1 {
  font-size: var(--font-size-h1);
  margin-top: 0 !important;
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

h5 {
  font-size: var(--font-size-h5);
}

button {
  padding: 0;
  cursor: none;
}

table th,
table td {
  font-family: var(--font-family-duo);
  font-size: var(--font-size-table);
}
table th {
  font-variation-settings: "wght" var(--font-weight-semi-bold);
}
table td {
  font-variation-settings: "wght" var(--font-weight-text);
}

#first-level a,
#first-level .note button {
  text-shadow: -0.08em 0.08em 0 var(--color-grey-dark),
    0px 0.08em 0 var(--color-grey-dark), 0.04em 0.08em 0 var(--color-grey-dark),
    0.08em 0.08em 0 var(--color-grey-dark);
}
#second-level a,
#second-level .note button {
  text-shadow: -0.08em 0.08em 0 var(--color-grey-light),
    0px 0.08em 0 var(--color-grey-light),
    0.04em 0.08em 0 var(--color-grey-light),
    0.08em 0.08em 0 var(--color-grey-light);
}
#third-level a,
#third-level .note button {
  text-shadow: -0.08em 0.08em 0 var(--color-grey-normal),
    0px 0.08em 0 var(--color-grey-normal),
    0.04em 0.08em 0 var(--color-grey-normal),
    0.08em 0.08em 0 var(--color-grey-normal);
}

a:not(.layer-btn),
.note button {
  color: inherit;
  font-family: inherit;
  font-variation-settings: inherit;
  text-decoration: none;
  background-repeat: repeat-x;
  background-image: var(--linear-gradient-dotted);
  background-position: bottom;
  background-size: var(--linear-gradient-background-size);
}

a:hover:not(.layer-btn),
.note:hover button {
  background-image: var(--linear-gradient-solid);
  background-position: bottom;
  background-size: 100% 0.09em;
}

a:not(figure a)::after {
  content: "\00A0↗";
}
a:not([target], figure a)::after {
  content: "\00A0→";
}

p {
  margin-bottom: var(--margin-text);
  margin-right: var(--margin-right-p);
  font-size: var(--font-size-text);
  font-variation-settings: "wght" var(--font-weight-text);
}
.column:not([style="--span:12"]) p {
  margin-right: 0;
}
.column:not([style="--span:12"]) figure {
  margin: 0;
}

blockquote footer,
figcaption,
.callout {
  font-family: var(--font-family-duo);
}

blockquote,
blockquote footer {
  font-size: var(--font-size-text);
  font-synthesis: none;
}

blockquote {
  font-style: italic;
  font-variation-settings: "wght" var(--font-weight-semi-bold);
  margin: 2rem 0 2rem 2.5rem;
}

blockquote footer {
  font-style: normal;
  font-variation-settings: "wght" var(--font-weight-text);
  margin-top: var(--margin-text);
}

figcaption {
  margin-top: var(--margin-text);
  font-size: var(--font-size-caption);
}

.callout {
  font-size: var(--font-size-introduction);
  display: inline;
}

p.callout {
  margin: var(--margin-heading) 0;
  width: 100%;
  display: block;
}

p.callout:first-child {
  margin-top: 0;
}

/* note */

.note button::after {
  content: "\00A0+";
  display: inline-block;
}
.note.open button::after {
  content: "–";
  transform: rotate(90deg);
  margin-left: calc(var(--margin-text) / 1.25);
}

.details::after {
  content: "–";
  margin-left: calc(var(--margin-text) / 1.25);
}

.details {
  text-decoration: none !important;
  opacity: 70%;
}

/* generic */
.hide {
  display: none !important;
}

.unvisible {
  color: rgba(0, 0, 0, 0);
}

/* cursor */
#cursor {
  display: none;
  position: absolute;
  z-index: 999;
  pointer-events: none;
  background-color: var(--color-grey-dark);
}

#cursor span {
  height: var(--font-size-introduction);
}

#cursor #target {
  width: var(--font-size-introduction);
}

#cursor #text {
  display: none;
  background-color: var(--color-grey-light);
  color: var(--color-grey-dark);
  font-size: var(--font-size-caption);
  align-items: center;
  padding: 0 0.5rem;
}

#cursor.light {
  background-color: var(--color-grey-light);
}
#cursor.light #text {
  background-color: var(--color-grey-dark);
  color: var(--color-grey-light);
}

/* layout */
.empty {
  display: none;
}
#introduction {
  position: fixed;
  z-index: 999;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--color-grey-dark);
  padding: var(--padding-body);
}

/* logo */

.mobile,
.tablet {
  display: none;
}

#introduction h1 {
  font-size: var(--font-size-logo);
  color: var(--color-grey-light);
  hyphens: none;
}

#introduction p {
  font-size: var(--font-size-introduction) !important;
}

.home p {
  font-family: var(--font-family-duo);
  font-size: var(--font-size-introduction);
  margin-right: 0;
}

#first-level {
  position: relative;
}

#logo {
  color: var(--color-grey-light);
  margin-top: 0;
  margin-bottom: 6rem;
}

.layer {
  box-sizing: border-box;
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  padding: var(--padding-body);
  background-color: var(--color-grey-dark);
  color: var(--color-grey-light);
  transition: left 0.5s ease-in-out, top 0.5s ease-in-out,
    color 0.5s ease-in-out;

  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
}
#second-level {
  background-color: var(--color-grey-light);
  color: var(--color-grey-dark);
  margin-left: var(--padding-body);
  width: calc(100vw - var(--padding-body));
}
#third-level {
  background-color: var(--color-grey-normal);
  color: var(--color-grey-dark);
  margin-left: calc(2 * var(--padding-body));
  width: calc(100vw - 2 * (var(--padding-body)));
}

.out-screen {
  left: 100%;
}

.layer-btn {
  background-image: none;
  position: absolute;
  left: 0;
  top: 0;
  width: var(--padding-body);
  height: 100%;
  transition: color 0.2s ease-in-out;
  color: rgba(0, 0, 0, 0);
}
.layer-btn::after {
  content: "" !important;
}

table {
  border-collapse: collapse;
  margin: 2rem 0;
  display: block;
  width: calc(100vw - 2 * var(--padding-body));
  overflow: auto;
}

table thead,
table tr:not(:last-child) {
  background-repeat: repeat-x;
  background-image: var(--linear-gradient-dotted);
  background-position: bottom;
  background-size: var(--linear-gradient-background-size);
}

table th,
table td {
  padding: 1rem 3rem 1rem 0;
}

table tr th:last-child,
table tr td:last-child {
  padding-right: 29rem;
}

.row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 5vw;
  margin-bottom: var(--margin-heading);
}

.row .column {
  grid-column: span var(--span);
}

/* Collapsable section */
.collapsable__content {
  height: 0;
  overflow: hidden;
}
section.collapsable.open .collapsable__content {
  height: auto;
}

section.collapsable button h4::after {
  content: "▾";
  /* content: "↓"; */
  display: inline-block;
  margin-left: 2rem;
}

section.collapsable.open button h4::after {
  transform: rotate(180deg);
}

/* TABLETTE */
@media screen and (max-width: 820px) {
  p {
    margin-right: 0;
  }
}

/* TABLET */
@media screen and (max-width: 1270px) {
  .tablet {
    display: inline;
  }
}

/* MOBILE */
@media screen and (max-width: 640px) {
  :root {
    --padding-body: 10vw; /* 32px / 320px */
    --layer-button-height: 3rem;
    /* font size */
    --font-size-scale: 1.2;
    --font-size-demi-scale: 1;
    --font-size-logo: calc(
      calc(var(--font-size-h1) * var(--font-size-scale)) * 1.44
    ); /* 69px */
  }

  /* html */

  .mobile {
    display: inline;
  }

  body {
    height: 100vh;
    overflow: hidden;
  }

  hr {
    margin: 1.5rem 0;
  }

  p {
    margin-right: 0;
  }

  table th,
  table td {
    font-family: var(--font-family-duo);
  }

  table tr th:last-child,
  table tr td:last-child {
    padding-right: inherit;
  }

  .empty {
    display: block;
    height: var(--layer-button-height);
    pointer-events: none;
  }

  /* layout */

  #logo {
    margin-bottom: 3rem;
  }

  .layer {
    background-color: transparent;
    margin-left: 0 !important;
    width: 100% !important;
    height: 100vh;
    overflow-y: auto;
    padding: 0;
    background-color: transparent !important;
  }

  .layer:not(.current) {
    height: 100vh;
    overflow: hidden;
  }
  .layer:not(.current) .content-background {
    z-index: -1;
  }

  .content-background > * {
    opacity: 1;
    transition: opacity 0.5s ease-in-out;
  }

  .layer:not(.current) .content-background > * {
    opacity: 0;
  }

  .layer .content-background {
    position: relative;
    pointer-events: all;
    padding: 0 var(--padding-body) 3rem var(--padding-body);
    z-index: 2;
    padding-bottom: 8rem;
  }

  #first-level .layer-btn {
    background-color: var(--color-grey-dark);
    color: var(--color-grey-light-rgba);
  }
  #first-level .layer-btn.unvisible {
    color: var(--color-grey-light-rgba-unvisible);
  }
  #second-level {
    background-color: transparent;
  }
  #second-level .layer-btn {
    background-color: var(--color-grey-light);
    color: var(--color-grey-dark-rgba);
  }
  #second-level .layer-btn.unvisible {
    color: var(--color-grey-dark-rgba-unvisible);
  }
  #second-level .content-background {
    background-color: var(--color-grey-light);
    min-height: calc(100vh - var(--layer-button-height));
  }
  #second-level .layer-btn {
    background-color: var(--color-grey-light);
  }
  #third-level .content-background {
    background-color: var(--color-grey-normal);
    min-height: calc(100vh - 2 * var(--layer-button-height));
  }

  .column {
    margin-bottom: calc(var(--margin-text) * 2);
  }

  .out-screen {
    top: 100vh;
    left: 0;
  }

  .layer-btn {
    position: sticky;
    display: block;
    top: 0;
    background-color: inherit;
    width: calc(100% - 2 * var(--padding-body));
    height: calc(var(--layer-button-height) - 2 * 0.7rem);
    font-size: var(--font-size-text);
    text-decoration: none;
    padding: 0.7rem var(--padding-body);
    z-index: 2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  p.callout {
    margin: 2.16rem 0;
  }

  blockquote {
    margin: 1.5rem 0 1.5rem 2rem;
  }

  .note {
    display: inline;
  }
  .note button {
    padding: 0;
  }

  .row {
    display: block;
  }
}