/*
 | DEFAULTS
 */
:root {
  --page-background-color: #2d2833;
  --content-background-color: #4f485aaa;

  --primary-color: #d3ff33b0;
  --secondary-color: #8c74bc80;

  --text-color: #aeaab5;
}

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

ul {
  list-style-type: none;
}

svg {
  width: 100%;
  height: auto;
}

body {
  background-color: var(--page-background-color);
  color: var(--text-color);
  font-family: "Open Sans", Arial, Helvetica, sans-serif;
}

/* prettier-ignore */
h1, h2, h3, h4, h5, h6 {
  font-family: "Lexend", Arial, Helvetica, sans-serif;
  font-weight: normal;
}

/* prettier-ignore */
a:link, a:visited {
  color: var(--text-color);
  text-decoration: none;
}

/*
 | GENERAL
 */

/* prettier-ignore */
header, main, footer {
  margin: 2rem auto;
  max-width: 960px;
  min-width: 900px;

  border-radius: 1em;
  background-color: var(--content-background-color);
  backdrop-filter: blur(2.5px);
  -webkit-backdrop-filter: blur(2.5px);
}

/*
 * Scrollbar
 */
/* .scrollbar {
  overflow: overlay;
} */
.scrollbar::-webkit-scrollbar {
  width: 1em;
}
.scrollbar-small::-webkit-scrollbar {
  width: 0.5em;
}
/* .scrollbar::-webkit-scrollbar-track-piece:start,
.scrollbar::-webkit-scrollbar-track-piece:end {
  background: transparent url("assets/utils/transparent.min.png") repeat !important;
} */
.scrollbar::-webkit-scrollbar-thumb {
  background-color: #9c9c9c80;
  border-radius: 0.5em;
}
.scrollbar::-webkit-scrollbar-thumb:hover {
  background-color: #7c7c7c80;
}
.scrollbar::-webkit-scrollbar-thumb:active {
  background-color: #5c5c5c80;
}

/*
 * Animations
 */

/* reset animation */
@keyframes reset {
  to {
    height: auto;
  }
}

@keyframes to-hidden {
  from {
    visibility: visible;
  }
  to {
    visibility: hidden;
  }
}

@keyframes to-visible {
  from {
    visibility: hidden;
  }
  to {
    visibility: visible;
  }
}

/*
 | BACKGROUND
 */

#body-background {
  background-image: url("assets/bonger/tiled.min.svg");
  background-position: 52px 52px;
  background-size: 420px 420px;
  opacity: 0.4;

  position: fixed;
  top: 0;
  left: -100vmax;
  width: 500vmax;
  height: 400vmax;
  z-index: -1;

  animation: background-pan 666s linear infinite;
}

/* 
 * - Cross points on a parallelogram like so in order of `a`
 * - Calculate keyframe percentages based on distance travelled so 
 *   speed is consistent
 $$ let a = [1, 0]; b = [3, -3]; c = [4, 0]; d = [0, -3]; <- vectors
 $$ let n = ||ab|| + ||bc|| + ||cd|| + ||da||; <- scalar length
 */
@keyframes background-pan {
  0% {
    top: 0;
    left: -100vmax;
  }

  /* $$ ||ab|| / n */
  24.15% {
    top: -300vmax;
    left: -300vmax;
  }

  /* $$ (||ab|| + ||bc||) / n */
  45.33% {
    top: 0vmax;
    left: -400vmax;
  }

  /* $$ (||ab|| + ||bc|| + ||cd||) / n */
  78.82% {
    top: -300vmax;
    left: 0;
  }
}

/*
 | HEADER
 */

/* prettier-ignore */
:root {
  --timeline-drawing-period: 1.5s;
  --timeline-normal-period: 2s; /* only first iter, otherwise draw + normal */
  --timeline-sweat-period: 3s;

  --timeline-singing-delay: calc(1.5s + 2s); /* drawing + normal */
  --timeline-sound-delay: calc(1.5s + 2s + 0.2s); /* singing-delay + wait */
  --timeline-sweat-delay: calc(1.5s + 2s + 0.2s + 0.5s); /* sound-delay + wait */
  --timeline-anger-delay: calc(1.5s + 2s + 0.2s + 0.5s + 3s); /* sweat-delay + sweat */
}

header {
  position: relative;
}

header > *:not(#banner) {
  position: absolute;
  pointer-events: none;
}

header h1 {
  left: 1.5rem;
  bottom: 0.5rem;
  color: var(--primary-color);
}

header h2 {
  right: 1.5rem;
  bottom: 0.5rem;
}

header h3 {
  top: 0.5rem;
  right: 1.5rem;
}

/*
 * Banner General
 */

#banner {
  opacity: 0.69;
  height: 250px;
}

#banner * {
  position: absolute;
}

/* TODO animate sound off, make .timeline-timeline-singing wrapper and animate fade */
#banner:hover .timeline-hover-reset {
  /* animation-play-timeline: paused; */
  animation-name: reset;
}
#banner:hover .timeline-hover-hidden {
  /* animation: to-hidden 1s forwards; */
  visibility: hidden;
}

/*
 * Landscape
 */

#landscape .anger {
  animation: timeline-landscape-anger 0.5s var(--timeline-anger-delay) infinite;
}

@keyframes timeline-landscape-anger {
  50% {
    transform: translate(5px);
  }
}

/*
 * Response
 */
#response {
  width: 77px;
  top: 25px;
  right: 270px;
}

#response .reaction {
  width: 50px;
  height: 50px;
  left: 8px;
  top: 3px;
}

#response .jolly-wrapper {
  transform: rotate(-7deg);
  transform-origin: center center;
  animation: timeline-response-jolly 1s var(--timeline-drawing-period)
    step-start infinite;
}

#response .jolly {
  animation: to-hidden 0s var(--timeline-sweat-delay) step-start forwards;
}
#response .sweat {
  visibility: hidden;
  animation: to-visible var(--timeline-sweat-period) var(--timeline-sweat-delay)
    step-start;
}
#response .anger {
  visibility: hidden;
  transform-origin: center;
  animation: to-visible 0s var(--timeline-anger-delay) step-start forwards,
    timeline-response-anger 0.5s infinite;
}

#banner:hover #response .anger,
#banner:hover .sweat {
  visibility: hidden;
}
#banner:hover .jolly {
  visibility: visible;
}

@keyframes timeline-response-jolly {
  50% {
    transform: rotate(7deg);
  }
}

@keyframes timeline-response-anger {
  50% {
    transform: scale(1.1);
  }
}

/*
 * Sound
 */
#sound {
  width: 275px;
  height: 150px;
  top: 20px;
  left: 175px;
}
#sound .wind {
  width: 150px;
  right: 60px;
  visibility: hidden;
  stroke-dasharray: 140;
  animation-duration: 8s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
#sound .wind1 {
  stroke-dashoffset: 1400;
  animation-name: timeline-singing-wind1;
  animation-delay: calc(0.4s + var(--timeline-sound-delay));
}
#sound .wind2 {
  stroke-dashoffset: 1500;
  animation-name: timeline-singing-wind2;
  animation-delay: calc(0.6s + var(--timeline-sound-delay));
}

@keyframes timeline-singing-wind1 {
  from {
    visibility: visible;
  }
  to {
    stroke-dashoffset: 0;
    visibility: visible;
  }
}
@keyframes timeline-singing-wind2 {
  from {
    visibility: visible;
  }
  to {
    stroke-dashoffset: 100;
    visibility: visible;
  }
}

#sound .noise {
  width: 42px;
  visibility: hidden;
  animation: timeline-singing-noise 0.7s var(--timeline-sound-delay) step-start
    infinite;
}
#sound .noise1 {
  top: 60px;
  right: 180px;
  animation-delay: calc(0.2s + var(--timeline-sound-delay));
}
#sound .noise2 {
  top: 105px;
  right: 160px;
  transform: rotate(30deg);
  animation-delay: calc(0.4s + var(--timeline-sound-delay));
}
#sound .noise3 {
  top: 10px;
  right: 145px;
  transform: rotate(-20deg);
  animation-delay: calc(0.6s + var(--timeline-sound-delay));
}
#sound .noise4 {
  top: 20px;
  right: 40px;
  transform: rotate(-20deg);
  animation-delay: calc(0.8s + var(--timeline-sound-delay));
}
#sound .noise5 {
  top: 80px;
  right: 40px;
  transform: rotate(10deg);
  animation-delay: calc(1s + var(--timeline-sound-delay));
}

@keyframes timeline-singing-noise {
  50% {
    visibility: visible;
  }
}

#sound .note {
  width: 50px;
  top: 20px;
  right: 185px;
  visibility: hidden;
  animation: timeline-singing-note 1s var(--timeline-sound-delay) step-start
    infinite;
}
#sound .double-note {
  width: 50px;
  top: 50px;
  right: 80px;
  visibility: hidden;
  animation: timeline-singing-double 1s calc(0.8s + var(--timeline-sound-delay))
    step-start infinite;
}

@keyframes timeline-singing-note {
  0% {
    visibility: visible;
  }
  50% {
    transform: translate(10px, -10px);
  }
  100% {
    visibility: visible;
  }
}

@keyframes timeline-singing-double {
  0% {
    visibility: visible;
  }
  50% {
    transform: translate(10px, 0);
  }
  100% {
    visibility: visible;
  }
}

#landscape .behind-sound {
  stroke-dashoffset: 333;
  stroke-dasharray: 333;
  opacity: 0;
}

/*
 * Bonger
 */

#bonger {
  width: 150px;
  height: 150px;
  top: 20px;
  left: 60px;
  color: var(--secondary-color);
  transition: color 0.5s;
  animation: timeline-singing-bonger 0.5s var(--timeline-singing-delay) infinite;
}

@keyframes timeline-singing-bonger {
  80% {
    transform: scale(1.04);
  }
}

#bonger .singing,
#bonger .happy {
  visibility: hidden;
}

/* animating */
#bonger .normal {
  animation: to-hidden 0s var(--timeline-singing-delay) forwards;
}

#bonger .singing {
  animation: to-visible 0s var(--timeline-singing-delay) forwards;
}

#bonger .mic {
  width: 50px;
  top: 13px;
  right: -23px;
  visibility: hidden;
  animation: to-visible 0s var(--timeline-singing-delay) step-start forwards;
}

/* hover */
#banner:hover #bonger {
  color: #bd75a080;
}
#banner:hover .singing {
  visibility: hidden;
}
#banner:hover .happy {
  visibility: visible;
}

/*
 * General animation
 */

/* drawing */
.draw-stroked-large {
  stroke-dasharray: 1069;
  stroke-dashoffset: 1069;
}
.draw-stroked-medium {
  stroke-dasharray: 333;
  stroke-dashoffset: 333;
}
.draw-stroked-small {
  stroke-dasharray: 99;
  stroke-dashoffset: 99;
}
.draw-stroked {
  animation: draw-stroke var(--timeline-drawing-period) linear forwards;
}
.draw-filled {
  fill-opacity: 0;
  animation: draw-fill 0.5s var(--timeline-drawing-period) linear forwards;
}
.draw-stroked.draw-filled {
  animation: draw-fill 0.5s var(--timeline-drawing-period) linear forwards,
    draw-stroke var(--timeline-drawing-period) linear forwards;
}

/* drawing lines */
@keyframes draw-stroke {
  to {
    stroke-dashoffset: 0;
  }
}
/* filling shape after drawing */
@keyframes draw-fill {
  to {
    fill-opacity: 1;
  }
}

/*
 | MAIN
 */

main {
  padding: 2em 0;
  display: flex;
}

main section {
  flex: 1;
  padding: 0 3em;
}
main section:not(:last-child) {
  border-right: 1px #696175aa solid;
}

main h2 {
  color: var(--primary-color);
}

main ul {
  padding-left: 0.5em;
  margin-bottom: 2em;
}

main li {
  margin: 0.2em 0;
  padding: 1em;
  border-radius: 0.3rem;
  cursor: pointer;
  position: relative;
  transition: background-color 0.1s;
}
main li:hover {
  background-color: #696175aa;
}
main li::after {
  content: "";
  position: absolute;
  top: 0;
  right: 1rem;
  bottom: 0;
  width: 3rem;
  transform: scale(0.4);

  opacity: 0;
  background-image: url("assets/icons/arrow-right.svg");
  background-size: 1.2em;
  background-position: center;
  background-repeat: no-repeat;
  transition: right 0.2s, opacity 0.2s, transform 0.2s;
}
main li:hover::after {
  right: 0;
  opacity: 1;
  transform: initial;
}

/*
 | FOOTER
 */

footer {
  padding: 1em 16em;
  display: flex;
  justify-content: space-around;
}

footer a {
  transition: color 0.2s;
}
footer a:hover {
  color: var(--primary-color);
}