@view-transition {
  navigation: auto;
}

[data-direction="forward"]::view-transition-old(root) {
  animation: slide-out-left 0.5s ease-in-out;
}

[data-direction="forward"]::view-transition-new(root) {
  animation: slide-in-right 0.5s ease-in-out;
}

[data-direction="backward"]::view-transition-old(root) {
  animation: slide-out-right 0.5s ease-in-out;
}

[data-direction="backward"]::view-transition-new(root) {
  animation: slide-in-left 0.5s ease-in-out;
}

header {
  view-transition-name: none-01;
}

nav {
  view-transition-name: none-02;
}

@keyframes slide-out-top {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-100vh);
  }
}

@keyframes slide-in-left {
  from {
    transform: translateX(-100vw);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slide-out-left {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-100vw);
  }
}

@keyframes slide-in-right {
  from {
    transform: translateX(100vw);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slide-out-right {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(100vw);
  }
}

@keyframes slide-out-bottom {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(100vh);
  }
}

@font-face {
  font-family: "BDO Grotesk";
  font-style: normal;
  font-weight: 300 900;
  src: url("../fonts/bdo-grotesk/BDOGrotesk-VF.woff2") format("woff2"),
    url("../fonts/bdo-grotesk/BDOGrotesk-VF.ttf") format("truetype");
  font-display: fallback;
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-feature-settings: "ss04" 1;
  src: url("../fonts/ibm-plex-mono/woff2/IBMPlexMono-Regular.woff2")
      format("woff2"),
    url("../fonts/ibm-plex-mono/ttf/IBMPlexMono-Regular.ttf") format("truetype");
  font-display: fallback;
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 200;
  font-feature-settings: "ss04" 1;
  src: url("../fonts/ibm-plex-mono/woff2/IBMPlexMono-ExtraLight.woff2")
      format("woff2"),
    url("../fonts/ibm-plex-mono/ttf/IBMPlexMono-ExtraLight.ttf")
      format("truetype");
  font-display: fallback;
}

:root {
  --ff-nrml: "BDO Grotesk", Inter, Roboto, "Helvetica Neue", "Arial Nova",
    "Nimbus Sans", Arial, system-ui, sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", "Source Code Pro",
    Menlo, Consolas, "DejaVu Sans Mono", monospace;

  --fs-xl: 4rem;
  --fs-l: 2rem;
  --fs-m: 1.25rem;
  --fs-s: 0.8rem;

  --spacer-inline: 0.25rem;
  --spacer-block: calc(var(--spacer-inline) * 0.5);
}

/* hide scrollbars */

html::-webkit-scrollbar,
.overlay::-webkit-scrollbar {
  display: none;
}

html,
.overlay {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* selection colors */

::-moz-selection {
  color: var(--clr-bg);
  background: var(--clr-bg-gray);
}

::selection {
  color: var(--clr-bg);
  background: var(--clr-bg-gray);
}

.overlay ::-moz-selection {
  color: var(--clr-bg-gray);
  background: var(--clr-bg);
}

.overlay ::selection {
  color: var(--clr-bg-gray);
  background: var(--clr-bg);
}

/* general */

body {
  font-family: var(--ff-nrml);
  font-size: var(--fs-m);
  font-style: normal;
  font-weight: 375;
  line-height: 1.2;
  color: var(--clr-txt);
  background-color: var(--clr-bg);
  overscroll-behavior-y: none;
  hyphens: manual;
}

body[data-overlay="true"] {
  overflow: hidden;
}

p {
  margin-bottom: 1.15em;
  text-wrap: pretty;
  letter-spacing: 0.005em;
}

p a {
  text-decoration: underline;
  text-decoration-thickness: 0.075em;
  text-underline-offset: 0.1em;
  cursor: pointer;
}

address a:hover,
p a:hover {
  color: var(--clr-hover);
}

strong {
  font-weight: 475;
}

.grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: var(--spacer-inline);
  padding-inline: var(--spacer-inline);
}

/* header */

header {
  position: sticky !important;
  z-index: 3;
  inset: 0 0 auto 0;
  padding-block: var(--spacer-block);
  align-items: baseline;
  background-color: var(--clr-bg);
}

header > a > h1 {
  position: relative;
}

header > h2 {
  pointer-events: none;
}

.lang-wrapper {
  justify-self: flex-end;
  float: right;
  padding-top: var(--spacer-block);
  padding-left: 1rem;
}

.lang:first-child {
  padding-left: 0.5rem;
  margin-right: 0.25rem;
}

.lang[data-active="true"] {
  pointer-events: none;
}

.lang[data-active="false"] {
  color: var(--clr-txt-gray);
}

.lang[data-active="false"]:hover {
  color: var(--clr-txt);
}

.lang[data-active="false"]:hover + a {
  color: var(--clr-txt-gray);
}

/* navigation */

nav {
  position: fixed !important;
  z-index: 1;
  inset: auto 0 0 0;
  pointer-events: none;
}

nav li {
  background-color: var(--clr-bg);
}

.btn {
  position: relative;
  pointer-events: auto;
  grid-column: span 2;
  color: var(--clr-txt);
  margin-bottom: var(--spacer-inline);
  padding-top: 1.5rem;
  padding-left: 0.125rem;
  background-color: var(--clr-bg);
}

@media (hover: hover) and (pointer: fine) {
  header > a > h1::before {
    content: "↲ ";
  }

  header > a > h1 {
    position: relative;
    left: -1.25em;
    transition: all 100ms ease-in-out;
  }

  header > a > h1:hover {
    position: relative;
    left: 0;
  }

  .btn:hover {
    background-color: var(--clr-bg-gray);
  }

  .btn[data-active="true"]:hover {
    cursor: w-resize;
  }
}

.btn[data-active="true"] {
  background-color: var(--clr-bg-gray);
}

.btn[data-active="true"]:before {
  content: "[X]";
  margin-left: -0.15em;
  margin-right: 0.15em;
}

.btn:after {
  content: "";
  position: absolute;
  z-index: -1;
  inset-block: 0 calc(var(--spacer-inline) * -1);
  inset-inline: calc(var(--spacer-inline) * -1);
  background-color: var(--clr-bg);
}

/* info & imprint */

.overlay {
  position: fixed;
  inset-inline: var(--spacer-inline);
  z-index: 2;
  max-width: 0px;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: 0;
  transition: all 200ms ease-out;
}

.overlay[data-active="true"] {
  max-width: 100vw;
}

.overlay-content {
  grid-row: 1 / 2;
  background-color: var(--clr-bg-gray);
  padding-inline: var(--spacer-inline) 2em;
  padding-block: var(--spacer-block);
}

.overlay-close {
  cursor: w-resize;
  grid-row: 1 / 2;
  grid-column: 1 / -1;
  z-index: -1;
}

#info > .overlay-content {
  grid-column: 1 / 7;
  display: grid;
}

.additional {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1em;
  font-family: var(--ff-mono);
  font-feature-settings: "ss04" 1;
  font-size: var(--fs-s);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.005em;
  align-self: end;
  margin-top: 1em;
  margin-bottom: 2em;
  text-wrap: pretty;
}

.additional h2 {
  margin-bottom: 1em;
}

.additional ul {
  list-style-type: "— ";
  list-style-position: inside;
  text-indent: -1.3em;
  padding-left: 1.3em;
}

.additional a:hover {
  color: var(--clr-hover);
}

#contact > .overlay-content {
  grid-column: 1 / 5;
}

.imprint {
  font-family: var(--ff-mono);
  font-feature-settings: "ss04" 1;
  font-size: var(--fs-s);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.005em;
  margin-top: 25vh;
}

.imprint > p > strong {
  font-family: var(--ff-mono);
  font-feature-settings: "ss04" 1;
  font-size: var(--fs-s);
  font-weight: 400;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  text-wrap: balance;
  margin-top: 2em;
}

.imprint > p:nth-last-child(2) {
  margin-top: 4rem;
}

/* helper */

.uppercase-s {
  font-family: var(--ff-mono);
  font-feature-settings: "ss04" 1;
  font-size: var(--fs-s);
  font-weight: 400;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.uppercase-m {
  font-family: var(--ff-mono);
  font-feature-settings: "ss04" 1;
  font-size: calc(var(--fs-m) * 0.9);
  font-weight: 200;
  text-transform: uppercase;
}

/* responsive */

@media screen and (min-width: 1730px) {
  :root {
    --fs-xl: 6rem;
    --fs-l: 2.25rem;
    --fs-m: 1.5rem;
    --fs-s: 0.85rem;
  }

  .uppercase-m {
    font-size: calc(var(--fs-m) * 0.85);
  }

  p {
    letter-spacing: 0;
  }
}

@media screen and (max-width: 1200px) {
  .grid {
    grid-template-columns: repeat(8, 1fr);
  }
}

@media screen and (max-width: 900px) {
  :root {
    --fs-m: 1.075rem;
  }

  .grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .btn {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

@media screen and (max-width: 640px) {
  :root {
    --fs-xl: 3rem;
    --fs-l: 1.75rem;
  }

  .grid {
    grid-template-columns: repeat(4, 1fr);
  }

  header {
    grid-template-columns: 25% 1fr 1fr auto !important;
  }

  #info > .overlay-content {
    grid-column: 1 / 5;
  }

  .lang[data-active="true"] {
    display: none;
  }

  .lang[data-active="false"]:before {
    content: "↳";
    margin-right: -0.3em;
  }
}

@media screen and (max-width: 480px) {
  :root {
    --fs-xl: 2rem;
    --fs-l: 1.625rem;
    --fs-m: 1rem;
    --fs-s: 0.75rem;
  }

  .additional {
    margin-top: 3em;
    grid-template-columns: 1fr;
  }

  .overlay {
    overscroll-behavior: none;
  }
}

@media print {
  @page {
    size: A4 upright;
    margin: 16pt 16pt !important;
  }

  :root {
    --fs-xl: 32pt;
    --fs-l: 16pt;
    --fs-m: 8pt;
    --fs-s: 6pt;
  }

  .lang-wrapper,
  nav {
    display: none !important;
  }

  header {
    position: static !important;
  }

  main {
    max-height: 100vh !important;
  }

  .project-description {
    grid-column: 1 / 6 !important;
  }

  .project-images {
    grid-column: 6 / 11 !important;
  }

  body[data-overlay="true"] .overlay-content {
    --fs-s: 8pt;

    font-size: 16pt;
    grid-column: 1 / 11 !important;
    background-color: var(--clr-bg);
  }
}