/* ==== Design Tokens ==== */

:root {
  /* == Core Tokens == */

  /* Colors */
  --color-neutral: #808080;
  --color-neutral-dark-20: color-mix(in srgb, var(--color-neutral), black 20%);
  --color-neutral-dark-40: color-mix(in srgb, var(--color-neutral), black 40%);
  --color-neutral-dark-60: color-mix(in srgb, var(--color-neutral), black 60%);
  --color-neutral-dark-80: color-mix(in srgb, var(--color-neutral), black 80%);
  --color-neutral-light-20: color-mix(in srgb, var(--color-neutral), white 20%);
  --color-neutral-light-40: color-mix(in srgb, var(--color-neutral), white 40%);
  --color-neutral-light-60: color-mix(in srgb, var(--color-neutral), white 60%);
  --color-neutral-light-80: color-mix(in srgb, var(--color-neutral), white 80%);
  --color-neutral-light-90: color-mix(in srgb, var(--color-neutral), white 90%);

  /* Typography */
  --font-family-default: system-ui, 'Segoe UI', Roboto, Helvetica, Arial,
    sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
  --font-size-h1: clamp(3rem, 0.717vw + 2.771rem, 3.75rem);
  --font-size-h2: clamp(3rem, 0.717vw + 2.771rem, 3.75rem);
  --font-size-h3: clamp(2rem, 0.478vw + 1.847rem, 2.5rem);
  --font-size-h4: clamp(1.5rem, 0.478vw + 1.347rem, 2rem);
  --font-size-h5: clamp(1.25rem, 0.239vw + 1.174rem, 1.5rem);
  --font-size-h6: clamp(1rem, 0.382vw + 0.924rem, 1.25rem);
  --font-size-xl: 1.5rem;
  --font-size-l: 1.25rem;
  --font-size-m: 1rem;
  --font-size-s: 0.875rem;

  /* Spacing */
  --space-xl: clamp(4rem, 5.354vw + 2.929rem, 7.5rem);
  --space-l: 4rem;
  --space-m: 2rem;
  --space-s: 1rem;
  --space-xs: 0.5rem;
  --space-xxs: 0.25rem;
  --space-s-m: clamp(1rem, 2.294vw + 0.541rem, 2.5rem);

  /* Borders & Radii */
  --border-radius-circle: 50%;
  --border-radius-l: 1rem;
  --border-radius-m: 0.5rem;
  --border-radius-pill: 9999px;
  --border-radius-s: 0.25rem;
  --border-radius-xl: 1.5rem;

  /* Layout & Grid */
  --grid-1: repeat(1, 1fr);
  --grid-2: repeat(2, 1fr);
  --grid-3: repeat(3, 1fr);
  --grid-4: repeat(4, 1fr);
  --grid-auto-1: repeat(auto-fit, minmax(0, 1fr));
  --grid-auto-2: repeat(auto-fit, minmax(min(100%, 430px), 1fr));
  --grid-auto-3: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  --grid-auto-4: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
  --max-viewport-width: 1366px;
  --min-viewport-width: 320px;

  /* Sizing */
  --size-l: 320px;
  --size-m: 128px;
  --size-s: 64px;
  --size-xl: 640px;
  --size-xs: 32px;

  /* == Component Tokens == */

  /* Button */
  --button-border-radius: var(--border-radius-s);
  --button-border-width: 2px;
  --button-cta-background-color-default: var(--color-neutral-light-60);
  --button-cta-background-color-hover: var(--color-neutral-light-80);
  --button-cta-text-color-default: var(--color-neutral-dark-40);
  --button-cta-text-color-hover: var(--color-neutral);
  --button-font-size-l: var(--font-size-l);
  --button-font-size-m: var(--font-size-m);
  --button-font-size-s: var(--font-size-s);
  --button-horizontal-padding-l: 2em;
  --button-horizontal-padding-m: 1.5em;
  --button-horizontal-padding-s: 1em;
  --button-subtle-background-color-default: var(--color-neutral-dark-40);
  --button-subtle-background-color-hover: var(--color-neutral);
  --button-subtle-text-color-default: var(--color-neutral-dark-40);
  --button-subtle-text-color-hover: var(--color-neutral);
  --button-vertical-padding-l: 1em;
  --button-vertical-padding-m: 0.75em;
  --button-vertical-padding-s: 0.5em;

  /* Card */
  --card-border-radius: var(--border-radius-l);
  --card-gap: var(--space-xs);
  --card-padding: var(--space-m);

  /* Container */
  --container-gap: var(--space-m);
  --container-width: var(--max-viewport-width);

  /* Icon */
  --icon-background-color-default: var(--color-neutral);
  --icon-background-color-hover: var(--color-neutral-light-40);
  --icon-border-radius: var(--border-radius-circle);

  /* Image */
  --image-border-radius: var(--border-radius-l);

  /* Input */
  --input-border-radius: var(--border-radius-s);

  /* Link */
  --link-color-default: var(--color-neutral);
  --link-color-hover: var(--color-neutral-light-40);

  /* Navigation */
  --navigation-gap: var(--space-m);
  --navigation-link-color-default: var(--color-neutral-dark-40);
  --navigation-link-color-hover: var(--color-neutral);

  /* Section */
  --section-gap: var(--space-xl);
  --section-horizontal-padding: var(--space-s-m);
  --section-vertical-padding: var(--space-xl);
}

/* ==== Classes ==== */

/* == Utility Classes == */

/* Alignment */

.text-align-center {
  text-align: center;
}

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

/* Color */

.color-background-dark {
  background-color: var(--color-neutral-light-90);
}

/* gap */

.gap-s {
  gap: var(--space-s);
}

.gap-m {
  gap: var(--space-m);
}

.gap-l {
  gap: var(--space-l);
}

.gap-xl {
  gap: var(--space-xl);
}

/* grid */

.grid {
  display: grid;
}

.grid-1 {
  grid-template-columns: var(--grid-1);
}

.grid-2 {
  grid-template-columns: var(--grid-2);
}

.grid-3 {
  grid-template-columns: var(--grid-3);
}

.grid-4 {
  grid-template-columns: var(--grid-4);
}

.grid-auto-2 {
  grid-template-columns: var(--grid-auto-2);
}

.grid-auto-3 {
  grid-template-columns: var(--grid-auto-3);
}

.grid-auto-4 {
  grid-template-columns: var(--grid-auto-4);
}

/* Typography */

.heading-h1 {
  font-size: var(--font-size-h1);
  line-height: 1.125;
}

.heading-h2 {
  font-size: var(--font-size-h2);
  line-height: 1.25;
}

.heading-h3 {
  font-size: var(--font-size-h3);
  line-height: 1.3;
}

/* == Global Classes == */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family-default);
  color: var(--color-neutral-dark-40);
  line-height: 1.6;
}

p {
  max-width: 60ch;
  text-wrap: pretty;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1;
}

h1 {
  font-size: var(--font-size-h1);
  line-height: 1.125;
}

h2 {
  font-size: var(--font-size-h2);
  line-height: 1.25;
}

h3 {
  font-size: var(--font-size-h3);
  line-height: 1.3;
}

h4 {
  font-size: var(--font-size-h4);
  line-height: 1.4;
}

h5 {
  font-size: var(--font-size-h5);
  line-height: 1.5;
}

h6 {
  font-size: var(--font-size-h6);
  line-height: 1.6;
}

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

a:hover {
  color: var(--color-neutral);
}

section {
  display: flex;
  justify-content: center;
  padding: var(--section-vertical-padding) var(--section-horizontal-padding);
}

footer {
  display: flex;
  justify-content: center;
  padding: var(--section-vertical-padding) var(--section-horizontal-padding);
}

header {
  display: flex;
  justify-content: center;
  padding: var(--space-m) var(--section-horizontal-padding);
}

/* == Component Classes == */

/* Header */

.header-nav {
}

.header-nav__list {
  display: flex;
  gap: var(--navigation-gap);
  font-size: var(--font-size-l);
  justify-content: center;
  min-width: min-content;
  flex-wrap: wrap;
}

.header-nav__list-item {
  list-style: none;
  font-weight: 700;
}

.header-nav__link {
  color: var(--navigation-link-color-default);
  text-decoration: none;
  transition: color 0.25s;
}

.header-nav__link:hover {
  color: var(--navigation-link-color-hover);
  border-bottom: 2px solid var(--navigation-link-color-hover);
}

/* Button */

.button {
  display: inline-flex;
  background-color: var(--button-cta-background-color-default);
  color: var(--button-cta-text-color-default);
  padding: var(--button-vertical-padding-m) var(--button-horizontal-padding-m);
  text-align: center;
  text-decoration: none;
  font-weight: bold;
  width: fit-content;
  box-shadow: 3px 3px 0px var(--color-neutral-light-20);
  transition: all 0.25s;
}

.button:hover {
  background-color: var(--button-cta-background-color-hover);
  color: var(--button-cta-text-color-hover);
  box-shadow: 3px 3px 0px var(--color-neutral-light-60);
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  justify-content: center;
}

/* Timeline */

.timeline__heading {
  text-align: center;
}

.timeline-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
  position: relative;
}

.timeline-image {
  max-width: 640px;
}

.container {
  display: flex;
  flex-direction: column;
  max-width: var(--container-width);
}

.heading {
  display: flex;
  flex-direction: column;
  text-align: center;
  align-items: center;
  position: relative;
  z-index: 1;
}

.heading__image {
  position: absolute;
  height: 200px;
  z-index: -1;
  opacity: 0.25;
}

.logo {
  max-height: 200px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
}

.text-wrap-balance {
  text-wrap: balance;
}

.flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

p {
  margin-top: var(--space-m);
}

p:last-of-type,
p:last-child,
p:first-child {
  margin-top: 0px;
}

.no-margin {
  margin: 0px;
}

.z-index-1 {
  z-index: 1;
}

.dotted-line {
  height: 200px;
}

.margin-bottom-xl {
  margin-bottom: var(--space-xl);
}

@media screen and (max-width: 600px) {
  .header-nav {
    display: none;
  }
}