:root {
  --clr-primary-400: hsl(205, 100%, 33%);
  --clr-primary-300: hsl(205, 100%, 43%);

  --clr-accent-400: hsl(188, 97%, 19%);
  --clr-accent-300: hsl(188, 97%, 29%);

  --clr-neutral-100: hsl(226, 99%, 99%);
  --clr-neutral-900: hsl(0, 0%, 0%);

  --ff-primary: 'Exo 2', sans-serif;

  --ff-body: var(--ff-primary);
  --ff-heading: var(--ff-primary);

  --fw-extralight: 200;
  --fw-regular: 400;
  --fw-medium: 500;

  --fs-400: 1rem;
  --fs-500: 1.3rem;
  --fs-600: 1.5rem;
  --fs-700: 2rem;
  --fs-800: 2.5rem;

  --size-200: .5rem;
  --size-300: .75rem;
  --size-400: 1rem;
  --size-500: 1.25rem;
  --size-600: 1.5rem;
  --size-700: 2rem;
  --size-800: 2.5rem;
  --size-900: 3.5rem;
}

/* Box sizing rules */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Remove default margin */
* {
  margin: 0;
  padding: 0;
  font: inherit;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role='list'],
ol[role='list'] {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

html,
body {
  height: 100%;
}

/* Set core body defaults */
body {
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture,
svg {
  max-width: 100%;
  display: block;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
   scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* General Styling */

body {
  background: rgb(0, 0, 0);
  color: var(--clr-neutral-100);
  font-family: var(--ff-body);
  font-size: var(--fs-400);
  font-weight: var(--fw-regular);
}

#skybox-container::before {
  position: absolute;
  content: "";
  height: 100%;
  width: 100%;
  background: linear-gradient(0deg, rgb(0, 0, 0) 0%, rgba(255, 255, 255, 0) 52%);
  z-index: 0;
  pointer-events: none;
}

#skybox-container canvas {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  filter: brightness(0.3);
}

.inner {
  position: relative;
  z-index: 10;
  pointer-events: all;
}

svg.svg-inline--fa {
  width: 2em;
  height: 2em;
}

p:not([class]) {
  max-width: 50ch;
}

p[data-width="wide"] {
  max-width: 100%;
}

p a, p a:visited {
  color: var(--clr-primary-300);
  text-decoration: none;
}

p a:hover, p a:active {
  color: var(--clr-primary-400);
}

/* Button */

.button {
  cursor: pointer;
  text-decoration: none;
  border: 0;
  line-height: 1;
  background: none;
  color: var(--clr-neutral-100);
  padding: 1.2em 5em;
  font-weight: var(--fw-medium);
  transition: background-color 0.3s, box-shadow 0.3s, color 0.3s;
  box-shadow: inset 0 0 1em var(--clr-primary-400), 0 0 1em var(--clr-primary-400);
  border: var(--clr-primary-400) solid 2px;
}
.button:hover,
.button:focus-visible {
  background: var(--clr-primary-400);
  box-shadow: inset 0 0 0 var(--clr-primary-400), 0 0 1.5em var(--clr-primary-400);
}

/* Navigation */

.primary-header {
  padding-block: var(--size-700);
  margin-block-end: var(--size-700);
  background: rgb(10 10 10 / .25);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border-bottom: 2px solid rgb(255 255 255 / .10);
  box-shadow: 0 0px 32px rgb(2, 4, 24);
}

.primary-header .logo {
  width: clamp(150px, 21vw, 90%);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-nav-toggle {
  display: none;
}

.nav-list {
  font-size: var(--fs-500);
  display: flex;
  gap: var(--size-500);
}

.nav-list a {
  text-decoration: none;
  color: var(--clr-neutral-100);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--clr-accent-300);
}

@media (max-width: 50em) {
  .primary-header {
    padding-block: var(--size-700);
  }

  .primary-navigation {
    display: none;

    position: fixed;
    padding: var(--size-700);
    inset: 7rem var(--size-400) auto;
    max-width: 25rem;
    margin-left: auto;
    background: var(--clr-neutral-900);
    box-shadow: 0 0 0.5em var(--clr-primary-400);
  }

  .primary-header[data-overlay]::before {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgb(0 0 0 / .75);
  }

  .nav-list {
    display: grid;
    gap: var(--size-600);
    text-align: center;
  }

  .primary-navigation[data-visible] {
    display: block;
    position: fixed;
  }

  .mobile-nav-toggle {
    display: block;
    position: fixed;
    right: var(--size-200);
    cursor: pointer;
    border: 0;
    background: transparent;
    color: var(--clr-neutral-100);
    padding: 0.5em;
  }
  
  .mobile-nav-toggle svg[data-icon="xmark"] {
    display: none;
  }
}

/* Footer navigation */

.footer-nav a {
  color: var(--clr-neutral-100);
  text-decoration: none;
}

@media (max-width: 50em) {
  .footer-nav ul {
    display: block;
    columns: 2;
  }
  .socials ul {
    display: flex;
  }
}

/* Footer */

.primary-footer {
  padding-block: var(--size-700);
}

.primary-footer .nav-wrapper {
  justify-content: center;
}

.primary-footer .nav-list {
  font-size: var(--fs-400);
}

/* Utility classes */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-primary-400 {
  color: var(--clr-primary-400);
}
.text-primary-300 {
  color: var(--clr-primary-300);
}
.text-accent-400 {
  color: var(--clr-accent-400);
}
.text-accent-300 {
  color: var(--clr-accent-300);
}
.text-neutral-100 {
  color: var(--clr-neutral-100);
}
.text-neutral-900 {
  color: var(--clr-neutral-900);
}

.bg-primary-400 {
  background-color: var(--clr-primary-400);
}
.bg-primary-300 {
  background-color: var(--clr-primary-300);
}
.bg-accent-400 {
  background-color: var(--clr-accent-400);
}
.bg-accent-300 {
  background-color: var(--clr-accent-300);
}
.bg-neutral-100 {
  background-color: var(--clr-neutral-100);
}
.bg-neutral-900 {
  background-color: var(--clr-neutral-900);
}

.fw-extralight { font-weight: var(--fw-extralight); }
.fw-regular { font-weight: var(--fw-regular); }
.fw-medium { font-weight: var(--fw-medium); }

.fs-primary-heading {
  font-size: var(--fs-700);
  line-height: 1.1rem;
}
.fs-secondary-heading {
  font-size: var(--fs-600);
  line-height: 1.1rem;
}

.container {
  --max-width: 1640px;
  --padding: 1rem;

  width: min(var(--max-width), 100% - (var(--padding) * 2));
  margin-inline: auto;
}

.flow > * + * {
  margin-top: var(--flow-spacer, 1.5em);
}

.pad-heading {
  padding-bottom: var(--heading-padding, .5em);
}

.even-columns {
  display: grid;
  gap: 1rem;
}

@media (min-width: 50em) {
  .even-columns {
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
  }
}

.padding-block-400 {
  padding-block: var(--size-400);
}
.padding-block-900 {
  padding-block: var(--size-900);
}
.padding-inline-400 {
  padding-inline: var(--size-400);
}