initial commit

styles/main.css

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+/* Basics */
+
+*, *:before, *:after {
+  box-sizing: inherit;
+  margin: 0;
+  padding: 0;
+}
+
+:root {
+  box-sizing: border-box;
+  font-family: sans-serif;
+  font-size: calc(3vmax + 3vmin);
+  cursor: default;
+}
+
+a {
+  color: inherit;
+  cursor: pointer;
+}
+
+li {
+  list-style: none;
+}
+
+code {
+  font-family: Consolas, monaco, monospace;
+}
+
+kbd {
+  font-family: Consolas, monaco, monospace;
+  background-color: hsla(0, 0%, 100%, 0.2);
+  border-radius: 0.5em;
+  padding: 0.1em 0.4em 0;
+  margin: -0.1em 0 0;
+}
+
+h1 {
+  font-size: 1.5rem;
+}
+h2 {
+  font-size: 1rem;
+}
+h1, h2 {
+  font-weight: bold;
+}
+
+/* Layout */
+body {
+  display: flex;
+  flex-direction: column;
+  padding: 0;
+  margin: 0;
+  background-color: black;
+  color: white;
+  overflow: hidden;
+}
+
+body.is-loading:after {
+  content: 'Loading...';
+  font-size: 0.5em;
+  line-height: 100vh;
+  color: white;
+  background-image: linear-gradient(45deg, #030, #000, #003);
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  text-align: center;
+  z-index: 100;
+}
+
+body.simulate-projection {
+  filter: brightness(1.5) contrast(0.65);
+}
+
+main {
+  margin-top: 0;
+  perspective: 100vmin;
+  transform-style: preserve-3d;
+  height: 100vh;
+}
+
+/* Components */
+nav {
+  flex-wrap: wrap;
+  display: flex;
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  padding: 0.25em 0.25em 4em;
+  transition: transform ease 0.5s;
+  font-size: 0.5rem;
+  z-index: 2;
+  background-image: linear-gradient(to top, hsla(0, 0%, 0%, 0), hsla(0, 0%, 0%, 0.5));
+}
+
+nav > label {
+  flex: 0 0 auto;
+  padding-right: 1ch;
+}
+
+nav > input {
+  flex: 1 1 auto;
+  padding: 0;
+  font-size: inherit;
+  border: none;
+  background: transparent;
+  color: inherit;
+  outline: none;
+}
+
+nav > input:invalid {
+  color: red;
+}
+
+ul.help {
+  width: 100%;
+  flex-shrink: 0;
+  font-size: 0.5em;
+}
+
+ul.help li {
+  display: inline-block;
+  background-color: hsla(0, 0%, 100%, 0.2);
+  border-radius: 0.5em;
+  padding: 0 0.5em;
+}
+
+section {
+  position: absolute;
+  z-index: 1;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  overflow: hidden;
+  text-align: center;
+  background-color: black;
+  transition: transform ease 0.5s, opacity ease 0.5s, visibility step-end 0.5s;
+  transform-origin: 50% 50%;
+}
+
+/*
+section > * {
+  transform: rotate(-7deg);
+}
+*/
+
+[janus-timeline='past'] {
+  transition: transform ease-in 0.5s, opacity ease-in 0.5s, visibility step-end 0.5s;
+}
+
+[janus-timeline='present'] {
+  transition: transform ease-out 0.5s, opacity ease-out 0.5s, visibility step-start 0.5s;
+}
+
+[janus-timeline='future'] {
+  visibility: hidden;
+}
+
+body.show-notes section [janus-timeline='future'] {
+  visibility: visible;
+  opacity: 0.25;
+}
+
+body.show-notes section[janus-timeline='future'] [janus-timeline='future'] {
+  opacity: 1;
+}
+
+section[janus-timeline='past'] {
+  transform: translate3d(0, 0, 0) scale(5);
+  opacity: 0;
+  visibility: hidden;
+  pointer-events: none;
+  z-index: 2;
+}
+
+section[janus-timeline='present'] {
+  transform: none;
+  opacity: 1;
+}
+
+section[janus-timeline='future'] {
+  transform: translate3d(0, -5vmin, 0) scale(0.8);
+  opacity: 0;
+  visibility: hidden;
+  pointer-events: none;
+}
+
+img.cover, img.contain {
+  position: absolute;
+  top: 0;
+  left: 0;
+  height: 100%;
+  width: 100%;
+  z-index: -1;
+  transform: none;
+}
+img.cover {
+  object-fit: cover;
+}
+img.contain {
+  object-fit: contain;
+}
+
+body.show-notes section {
+  transition: none;
+}
+
+body.show-notes section[janus-timeline='present'] + section[janus-timeline='future'] {
+  transform: scale(0.25);
+  transform-origin: bottom right;
+  top: auto;
+  left: auto;
+  bottom: 0.4rem;
+  right: 0.4rem;
+  opacity: 0.75;
+  visibility: visible;
+  outline: 0.2rem solid white;
+  z-index: 3;
+}