:root {
  --bg-color: #343239;
  --btn-color: #00000060;
  --btn-border-color: #ffffff60;
  --backdrop-color: rgba(0, 0, 0, 0.6);
  --text-color: rgb(205, 205, 205);
  --btn-border: 1px solid var(--btn-border-color);
  --rules-background: rgb(68, 34, 102);
  --rules-width: 90vw;
  --rules-max-width: 38rem;
}

*::selection {
  background: black;
}

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

html,
body {
  margin: 0;
  height: 100%;
  font-family: system-ui, sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  position: relative;
}

.sr-only {
  white-space: nowrap;
  width: 0;
  height: 0;
  overflow: hidden;
  position: absolute;
}

#nav-hamburger {
  position: absolute;
  inset: 1rem auto auto 1rem;
  z-index: 2;
  padding: 0.6rem;
  block-size: 3rem;
  inline-size: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  background-color: var(--bg-color);
}

.hamburger-layer {
  block-size: 3px;
  inline-size: 100%;
  background-color: var(--text-color);
}

#site-nav-container {
  position: absolute;
  z-index: 3;
  background-color: var(--bg-color);
  block-size: 100dvh;
  border-inline-end: 1px solid var(--text-color);
  padding-inline: 5rem;
  padding-block: 3rem;
  transform: translateX(-100%);

  transition-property: transform;
  transition-duration: 300ms;
  transition-timing-function: linear;
}

#site-nav {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

#site-nav-curtain {
  position: absolute;
  inset: 0;
  backdrop-filter: blur(3px);
  z-index: 1;
  background-color: #0007;
  pointer-events: none;
  opacity: 0;

  transition-property: opacity;
  transition-duration: 300ms;
  transition-timing-function: linear;
}

#nav-hamburger[aria-expanded="true"] + #site-nav-container + #site-nav-curtain {
  pointer-events: all;
  opacity: 1;
}

#nav-hamburger[aria-expanded="true"] + #site-nav-container {
  transform: translateX(0%);
}

a {
  color: inherit;
}

#site-nav a,
button {
  display: block;
  margin: 0 auto;
  width: fit-content;
  font-family: inherit;
  font-size: 1rem;
  color: inherit;
  border: var(--btn-border);
  border-radius: 0.5rem;
  background: var(--btn-color);
  padding: 0.5rem 1rem;
  text-decoration: none;
}

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

main {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 0.5rem 8rem 0.5rem;
}

.credit {
  margin: 1rem 0;
  text-align: center;
  font-size: 0.9rem;
}

#camera {
  width: 100vw;
  overflow-x: hidden;
}

#footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  position: fixed;
  z-index: 1;
  inset: auto 0 0 0;
  padding: 0.5rem 2rem;
  border-top: 1px solid var(--btn-border-color);
  background: var(--bg-color);
}

#mobile-menu-button {
  display: none;
  text-decoration: underline;
  border: none;
  padding: 0.25rem;
  background: transparent;
  margin: 0;
}

#footer nav {
  display: flex;
  gap: 1rem;
}

.copyright {
  margin-top: auto;
  margin-left: auto;
  padding: 0.25rem;
  text-align: right;
}

@media (max-width: 1026px) {
  #footer {
    padding: 0.5rem;
  }

  #footer.open {
    inset: 0;
    border-top: none;
    background: #343239fa;
  }

  #mobile-menu-button {
    display: block;
    margin-top: auto;
  }

  #footer nav {
    display: none;
  }

  #footer.open nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    inset: 0 0 50% 0;
    justify-content: center;
  }

  #footer nav a {
    font-size: 3rem;
    padding: 0.25rem;
    font-weight: bold;
  }
}