<main>
  <div class="camera" role="img" aria-label="White camera rotating left and right">
    <div class="camera__shadow"></div>
    <div class="camera__front"></div>
    <div class="camera__contents">
      <div class="camera__red-light"></div>
      <div class="camera__lens-shadow"></div>
      <div class="camera__lens-back"></div>
      <div class="camera__lens-ring">
        <div class="camera__lens-ring-glare1"></div>
        <div class="camera__lens-ring-glare2"></div>
        <div class="camera__lens-ring-glare3"></div>
      </div>
      <div class="camera__lens-inner">
        <div class="camera__lens-inner-glare1"></div>
        <div class="camera__lens-inner-glare2"></div>
        <div class="camera__lens-eye-shadow"></div>
        <div class="camera__lens-glare"></div>
        <div class="camera__lens-eye">
          <div class="camera__lens-eye-ring"></div>
          <div class="camera__lens-eye-inner-glare"></div>
          <div class="camera__lens-eye-center">
            <div class="camera__lens-eye-center-glare"></div>
          </div>
          <div class="camera__lens-eye-glass-color"></div>
          <div class="camera__lens-eye-glare"></div>
          <div class="camera__lens-eye-glass"></div>
        </div>
      </div>
    </div>
  </div>
  <div class="camera camera--dark" role="img" aria-label="Black camera rotating left and right">
    <div class="camera__shadow"></div>
    <div class="camera__front"></div>
    <div class="camera__contents">
      <div class="camera__red-light"></div>
      <div class="camera__lens-shadow"></div>
      <div class="camera__lens-back"></div>
      <div class="camera__lens-ring">
        <div class="camera__lens-ring-glare1"></div>
        <div class="camera__lens-ring-glare2"></div>
        <div class="camera__lens-ring-glare3"></div>
      </div>
      <div class="camera__lens-inner">
        <div class="camera__lens-inner-glare1"></div>
        <div class="camera__lens-inner-glare2"></div>
        <div class="camera__lens-eye-shadow"></div>
        <div class="camera__lens-glare"></div>
        <div class="camera__lens-eye">
          <div class="camera__lens-eye-ring"></div>
          <div class="camera__lens-eye-inner-glare"></div>
          <div class="camera__lens-eye-center">
            <div class="camera__lens-eye-center-glare"></div>
          </div>
          <div class="camera__lens-eye-glass-color"></div>
          <div class="camera__lens-eye-glare"></div>
          <div class="camera__lens-eye-glass"></div>
        </div>
      </div>
    </div>
  </div>
</main>

* {
  border: 0;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --hue: 223;
  --bg: hsl(var(--hue),10%,80%);
  --fg: hsl(var(--hue),10%,10%);
  --trans-dur: 0.3s;
  font-size: calc(16px + (24 - 16) * (100vw - 320px) / (2560 - 320));
}
body {
  background-color: var(--bg);
  color: var(--fg);
  display: flex;
  font: 1em/1.5 sans-serif;
  height: 100vh;
  transition:
    background-color var(--trans-dur),
    color var(--trans-dur);
}
main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: auto;
}

/* Initial icon styles */
.camera,
.camera__red-light,
.camera__lens-ring-glare1,
.camera__lens-ring-glare2,
.camera__lens-ring-glare3,
.camera__lens-inner,
.camera__lens-inner-glare1,
.camera__lens-inner-glare2,
.camera__lens-glare,
.camera__lens-eye-ring,
.camera__lens-eye-inner-glare,
.camera__lens-eye-center,
.camera__lens-eye-center-glare,
.camera__lens-eye-glass,
.camera__lens-eye-glare {
  animation: camera 4s ease-in-out infinite;
}
.camera {
  background-color: hsl(var(--hue),10%,60%);
  border-radius: 3em;
  display: flex;
  margin: 1.5em;
  position: relative;
  width: 14em;
  height: 14em;
  transform: translateZ(0);
  transform-style: preserve-3d;
}
.camera__front,
.camera__contents,
.camera__red-light,
.camera__lens-inner,
.camera__lens-inner-glare1,
.camera__lens-inner-glare2,
.camera__lens-glare,
.camera__lens-ring,
.camera__lens-ring-glare1,
.camera__lens-ring-glare2,
.camera__lens-ring-glare3,
.camera__lens-eye,
.camera__lens-eye-shadow,
.camera__lens-eye-ring,
.camera__lens-eye-inner-glare,
.camera__lens-eye-center,
.camera__lens-eye-center-glare,
.camera__lens-eye-glass,
.camera__lens-eye-glass-color,
.camera__lens-eye-glare,
.camera__lens-shadow,
.camera__shadow {
  position: absolute;
}
.camera__red-light,
.camera__lens-back,
.camera__lens-ring,
.camera__lens-inner,
.camera__lens-inner-glare1,
.camera__lens-inner-glare2,
.camera__lens-glare,
.camera__lens-ring-glare1,
.camera__lens-ring-glare2,
.camera__lens-ring-glare3,
.camera__lens-eye,
.camera__lens-eye-shadow,
.camera__lens-eye-ring,
.camera__lens-eye-center,
.camera__lens-eye-glass,
.camera__lens-eye-glass-color {
  border-radius: 50%;
}
.camera__front {
  background-image: linear-gradient(hsl(var(--hue),10%,85%),hsl(var(--hue),10%,90%));
  border-radius: inherit;
  box-shadow: 0 0.1em 0 hsl(var(--hue),10%,95%) inset;
  width: 100%;
  height: 100%;
  transform: translateZ(1em);
  z-index: 1;
}
.camera__contents {
  top: 2.5em;
  left: 2.5em;
  width: 9em;
  height: 9em;
  transform: translateZ(1em);
  transform-style: preserve-3d;
  z-index: 2;
}
.camera__red-light {
  animation-name: cameraRedLight;
  background-color: hsl(3,90%,65%);
  box-shadow:
    0.1em -0.1em 0.1em 0.1em hsl(3,90%,50%) inset,
    0 0 0.5em 0.25em hsla(3,90%,70%,0.5);
  top: 0;
  right: 0;
  width: 0.6em;
  height: 0.6em;
}
.camera__lens-back,
.camera__lens-ring,
.camera__lens-inner {
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.camera__lens-back {
  background-color: hsl(var(--hue),10%,70%);
  transform: translateZ(0.01em);
}
.camera__lens-ring {
  background-color: hsl(var(--hue),10%,45%);
  border-radius: 50%;
  overflow: hidden;
  transform: translateZ(1.5em);
}
.camera__lens-ring-glare1 {
  animation-name: cameraRingGlare1;
  background-image: radial-gradient(100% 100% at center,hsl(0,0%,100%) 25%,hsla(0,0%,100%,0) 50%);
  bottom: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  transform-origin: 0 50%;
}
.camera__lens-ring-glare2 {
  animation-name: cameraRingGlare2;
  background-image: radial-gradient(100% 100% at center,hsl(var(--hue),10%,85%) 30%,hsla(var(--hue),10%,85%,0) 50%);
  top: 30%;
  right: 30%;
  width: 140%;
  height: 140%;
}
.camera__lens-ring-glare3 {
  animation-name: cameraRingGlare3;
  background-image: radial-gradient(100% 100% at center,hsl(var(--hue),10%,70%) 30%,hsla(var(--hue),10%,70%,0) 50%);
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
}
.camera__lens-inner {
  animation-name: cameraLensInner;
  background-color: hsl(var(--hue),10%,65%);
  box-shadow: 0 0 0 0.125em hsl(var(--hue),10%,50%);
  top: 0.5em;
  left: 0.5em;
  width: 8em;
  height: 8em;
  transform: translateZ(1.5em);
}
.camera__lens-inner-glare1 {
  animation-name: cameraLensInnerGlare1;
  box-shadow: 0.5em -1em 0.5em 0.5em hsl(var(--hue),10%,85%) inset;
  opacity: 0;
  width: 100%;
  height: 100%;
}
.camera__lens-inner-glare2 {
  animation-name: cameraLensInnerGlare2;
  border: 1em solid hsl(var(--hue),10%,85%);
  border-bottom: 1em solid transparent;
  filter: blur(4px);
  opacity: 0.5;
  top: 0.6em;
  left: 0.6em;
  width: 6.8em;
  height: 6.8em;
  transform: rotate(-45deg);
}
.camera__lens-glare {
  animation-name: cameraLensGlare;
  background-image: radial-gradient(100% 100% at center,hsl(0,0%,100%) 15%,hsla(0,0%,100%,0) 50%);
  top: 4em;
  left: 3em;
  width: 2em;
  height: 0.875em;
  transform: rotate(0) translateY(2.5em);
}
.camera__lens-eye,
.camera__lens-eye-shadow {
  top: 1.5em;
  left: 1.5em;
  width: 5em;
  height: 5em;
  transform: translateZ(0);
}
.camera__lens-eye {
  background-color: hsl(var(--hue),10%,10%);
  box-shadow: 0 0 0 0.0625em hsl(var(--hue),10%,10%);
  overflow: hidden;
}
.camera__lens-eye-shadow {
  box-shadow: 0 0 0.375em 0.25em hsl(var(--hue),10%,50%);
}
.camera__lens-eye-ring {
  animation-name: cameraEyeRing;
  box-shadow:
    0 0 0 0.25em hsl(0,0%,0%),
    0 0 0.25em 0.5em hsl(var(--hue),10%,25%),
    0 -0.25em 0.25em 0.5em hsl(var(--hue),10%,20%),
    0 0.2em 0.125em hsl(var(--hue),10%,40%) inset;
  top: 1em;
  left: 1em;
  width: 3em;
  height: 3em;
}
.camera__lens-eye-inner-glare {
  animation-name: cameraEyeInnerGlare;
  background-color: hsl(var(--hue),10%,35%);
  border-radius: 50% 50% 50% 50% / 20% 20% 80% 80%;
  box-shadow: 0 0 0.375em 0.25em hsl(var(--hue),10%,35%);
  top: 3em;
  left: 1.75em;
  width: 1.5em;
  height: 0.5em;
  opacity: 0;
  transform: scale(0);
}
.camera__lens-eye-center {
  background-image: linear-gradient(hsl(123,90%,5%) 45%,hsl(123,90%,15%) 75%);
  box-shadow: 0 0 0.125em 0.25em hsl(0,0%,0%);
  overflow: hidden;
  top: 2.125em;
  left: 2.125em;
  width: 0.75em;
  height: 0.75em;
}
.camera__lens-eye-center-glare {
  animation-name: cameraEyeCenterGlare;
  background-color: hsl(123,10%,35%);
  border-radius: 50%;
  top: 0;
  right: 0;
  width: 0.3em;
  height: 0.3em;
}
.camera__lens-eye-glass {
  animation-name: cameraEyeGlass;
  box-shadow:
    0 -0.1em 0.1em hsl(63,90%,20%) inset,
    0 0 0.125em hsl(3,90%,20%) inset,
    0 0 0.125em hsl(263,90%,40%) inset,
    0 0 0.125em 0.25em hsl(0,0%,0%) inset;
  width: 100%;
  height: 100%;
}
.camera__lens-eye-glass-color {
  background-image: linear-gradient(hsla(253,90%,10%,0.5) 60%,hsla(253,90%,40%,0.5) 60%);
  width: 100%;
  height: 100%;
}
.camera__lens-eye-glare {
  animation-name: cameraEyeGlare;
  background-color: hsla(223,90%,60%,0.7);
  border-radius: 50%;
  box-shadow: -0.125em 0.375em 0.5em hsl(268,90%,50%) inset;
  top: 0;
  right: 0;
  width: 50%;
  height: 50%;
  transform: translateX(0) rotate(45deg) scaleY(0.45);
}
.camera__lens-shadow {
  background-image: linear-gradient(135deg,hsla(var(--hue),50%,0%,0.25),hsla(var(--hue),50%,0%,0));
  filter: blur(4px);
  top: 50%;
  left: 0;
  width: 100%;
  height: 7em;
}
.camera__shadow {
  background-image: linear-gradient(90deg,hsla(var(--hue),50%,0%,0.5),hsla(var(--hue),50%,0%,0.1));
  border-radius: 40%;
  filter: blur(1px);
  top: calc(100% - 1em);
  width: 100%;
  height: 1em;
  transform: translateZ(-0.01em);
}

/* Dark icon styles */
.camera--dark {
  background-color: hsl(var(--hue),10%,10%);
}
.camera--dark .camera__front {
  background-image: linear-gradient(hsl(var(--hue),10%,15%),hsl(var(--hue),10%,20%));
  box-shadow: 0 0.1em 0 hsl(var(--hue),10%,25%) inset;
}
.camera--dark .camera__red-light {
  box-shadow:
    0.1em -0.1em 0.1em 0.1em hsl(3,90%,50%) inset,
    0 0 0.5em 0.25em hsla(3,90%,50%,0.5);
}
.camera--dark .camera__lens-back {
  background-color: hsl(var(--hue),10%,10%);
}
.camera--dark .camera__lens-inner {
  background-color: hsl(var(--hue),10%,5%);
}
.camera--dark .camera__lens-inner-glare1 {
  box-shadow: 0.5em -1em 0.5em 0.5em hsl(var(--hue),10%,25%) inset;
}
.camera--dark .camera__lens-inner-glare2 {
  border: 1em solid hsl(var(--hue),10%,25%);
  border-bottom: 1em solid transparent;
}
.camera--dark .camera__lens-glare {
  background-image: radial-gradient(100% 100% at center,hsl(var(--hue),10%,70%) 15%,hsla(var(--hue),10%,70%,0) 50%);
}
.camera--dark .camera__lens-eye-shadow {
  box-shadow: 0 0 0.375em 0.25em hsl(var(--hue),10%,2);
}

/* Dark page theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: hsl(var(--hue),10%,30%);
    --fg: hsl(var(--hue),10%,90%);
  }
}

/* Beyond mobile */
@media (min-width: 768px) {
  main {
    flex-direction: row;
  }
}

/* Animations */
@keyframes camera {
  from,
  to {
    transform: rotateY(20deg);
  }
  50% {
    transform: rotateY(-20deg);
  }
}
@keyframes cameraRedLight {
  from,
  to {
    transform: translateZ(0.6em) rotateY(-20deg);
  }
  50% {
    transform: translateZ(0.6em) rotateY(20deg);
  }
}
@keyframes cameraRingGlare1 {
  from,
  to {
    transform: translateX(-25%) scaleX(0.33);
  }
  50% {
    transform: translateX(0) scaleX(1);
  }
}
@keyframes cameraRingGlare2 {
  from,
  to {
    transform: scale(0.75);
  }
  50% {
    transform: scale(1.25);
  }
}
@keyframes cameraRingGlare3 {
  from,
  to {
    transform: translateX(-20%) scale(0.75);
  }
  50% {
    transform: translateX(0) scale(1.2);
  }
}
@keyframes cameraLensInner {
  from,
  to {
    box-shadow: 0.0625em 0 0 0.125em hsl(var(--hue),10%,50%);
  }
  50% {
    box-shadow: -0.0625em 0 0 0.125em hsl(var(--hue),10%,50%);
  }
}
@keyframes cameraLensInnerGlare1 {
  from,
  to {
    opacity: 1;
    transform: rotate(0);
  }
  50% {
    opacity: 0;
    transform: rotate(45deg);
  }
}
@keyframes cameraLensInnerGlare2 {
  from,
  to {
    opacity: 0.2;
    transform: translate(0,0.2em) scale(1.1) rotate(-45deg);
  }
  50% {
    opacity: 1;
    transform: translate(0,0) scale(1) rotate(-15deg);
  }
}
@keyframes cameraLensGlare {
  from,
  to {
    transform: rotate(-25deg) translateY(2.5em);
  }
  50% {
    transform: rotate(25deg) translateY(2.5em);
  }
}
@keyframes cameraEyeInnerGlare {
  from,
  to {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0;
    transform: scale(0);
  }
}
@keyframes cameraEyeCenterGlare {
  from,
  to {
    transform: translateX(-25%);
  }
  50% {
    transform: translateX(50%);
  }
}
@keyframes cameraEyeGlass {
  from,
  to {
    box-shadow:
      -0.1em -0.1em 0.1em hsl(63,90%,20%) inset,
      -0.2em -0.1em 0.125em hsl(3,90%,20%) inset,
      -0.3em -0.3em 0.125em hsl(263,90%,40%) inset,
      0 0 0.125em 0.25em hsl(0,0%,0%) inset;
  }
  50% {
    box-shadow:
      0.1em -0.1em 0.1em hsl(63,90%,20%) inset,
      0.2em -0.1em 0.125em hsl(3,90%,20%) inset,
      0.3em -0.3em 0.125em hsl(263,90%,40%) inset,
      0 0 0.125em 0.25em hsl(0,0%,0%) inset;
  }
}
@keyframes cameraEyeGlare {
  from,
  to {
    transform: translateX(-0.75em) rotate(10deg) scale(1.5,1);
  }
  50% {
    transform: translateX(0.375em) rotate(50deg) scale(1.5,0.25);
  }
}
@keyframes cameraEyeRing {
  from,
  to {
    box-shadow:
      0 0 0 0.25em hsl(0,0%,0%),
      0 0.25em 0.25em 0.5em hsl(var(--hue),10%,25%),
      0 -0.25em 0.25em 0.5em hsl(var(--hue),10%,20%),
      0 0.2em 0.125em hsl(var(--hue),10%,40%) inset;
  }
  50% {
    box-shadow:
      0 0 0 0.25em hsl(0,0%,0%),
      0 0 0.25em 0 hsl(var(--hue),10%,25%),
      0 -0.25em 0.25em 0.5em hsl(var(--hue),10%,20%),
      0 0.2em 0.125em hsl(var(--hue),10%,40%) inset;
  }
}