/* ------------------------------------------------ */

@font-face {
  font-family: title-font;
  src: url(../assets/JosefinSans-VariableFont_wght.ttf);
}

@font-face {
  font-family: main-font;
  src: url(../assets/Poison-Regular.ttf);
}

/* ------------------------------------------------ */

@property --waveform-bar {
  syntax: '<color>';
  initial-value: #000;
  inherits: true;
}

@property --waveform-progress {
  syntax: '<color>';
  initial-value: #000;
  inherits: true;
}

:root {
  color-scheme: light dark;
  --header-height: 5rem;
  --playback-height: 10rem;
  --background-color: light-dark(#FFF, #000);
  --playback-background-color: light-dark(#EEE, #1c1c1c);
  --text-color-title: light-dark(#444, #eee);
  --text-color: light-dark(#222, #ccc);
  --text-color-dark: light-dark(#000, #eee);
  --text-color-off: light-dark(#888, #888);
  --text-color-hover: light-dark(#555, #AAA);
  --border-color: light-dark(#8888, #8884);

  --tag-background: light-dark(#8881, #8881);
  --tag-background-active: light-dark(#0001, #FFF1);
  --tag-border: light-dark(#0006, #FFF6);

  --waveform-bar: light-dark(#0005, #FFF5);
  --waveform-progress: light-dark(#0001, #FFF2);

  --blur-brightness: 100%;
  --blur-opacity: 0.2;
  --blur-radius: 5rem;
  --blur-contrast: 0.6;

  --transition-time: 0.2s;
  --transition-function: ease-in;
  --border-radius: 0;
  --fullscreen-transition-time: 0.5s;
  --page-transition-time: 0;

  --background-image: url(/assets/gear.jpg);

  scroll-behavior: smooth;
}

@property --flare-color-1 {
  syntax: '<color>';
  initial-value: #000;
  inherits: true;
}

@property --flare-color-2 {
  syntax: '<color>';
  initial-value: #000;
  inherits: true;
}

@property --flare-color-3 {
  syntax: '<color>';
  initial-value: #000;
  inherits: true;
}

@property --flare-color-4 {
  syntax: '<color>';
  initial-value: #000;
  inherits: true;
}

@property --flare-tint-1 {
  syntax: '<number>';
  initial-value: 0;
  inherits: false;
}

@property --flare-tint-2 {
  syntax: '<number>';
  initial-value: 0;
  inherits: false;
}

@property --flare-saturation {
  syntax: '<percent>';
  initial-value: 0%;
  inherits: false;
}

@media (prefers-color-scheme: light) {
  :root {
    --blur-brightness: 100%;
    --blur-opacity: 0.4;
    --blur-contrast: 1;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --blur-brightness: 100%;
    --blur-opacity: 0.3;
    --blur-contrast: 0.6;
  }
}

body {
  --playback-height: 3rem;
}

body:has(.playback-controls.show) {
  --playback-height: 3rem;
}

:root.light {
  color-scheme: light;
  --blur-brightness: 100%;
  --blur-opacity: 0.4;
  --blur-contrast: 1;
}

:root.dark {
  color-scheme: dark;
  --blur-brightness: 100%;
  --blur-opacity: 0.3;
  --blur-contrast: 0.6;
}

/* ------------------------------------------------ */

* {
  box-sizing: border-box;
  letter-spacing: 1px;
}

/* ------------------------------------------------ */

body {
  anchor-name: --root-anchor;
  font-family: main-font;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  overflow-y: scroll;
  color: var(--text-color);

  background-image: linear-gradient(#0000, var(--background-color) 80vh),
                    var(--background-image);
  background-position:top center;
  background-repeat:repeat;
  background-size:contain;

  transition: 
    --flare-color-1 0.5s, 
    --flare-color-2 0.5s, 
    --flare-color-3 0.5s, 
    --flare-color-4 0.5s, 
    --flare-color-5 0.5s, 
    --flare-color-6 0.5s;

  --flare-color-1: light-dark(hsl(var(--flare-tint-2) calc(0.8 * var(--flare-saturation)) 75%), hsl(var(--flare-tint-2) var(--flare-saturation)  8%));
  --flare-color-2: light-dark(hsl(var(--flare-tint-2) calc(0.1 * var(--flare-saturation)) 75%), hsl(var(--flare-tint-2) calc(0.2 * var(--flare-saturation)) 5%));
  --flare-color-3: light-dark(hsl(var(--flare-tint-1) calc(0.4 * var(--flare-saturation)) 80%), hsl(var(--flare-tint-1) var(--flare-saturation) 4%));
  --flare-color-4: light-dark(hsl(var(--flare-tint-3) calc(0.3 * var(--flare-saturation)) 20%), hsl(var(--flare-tint-3) var(--flare-saturation) 10%));
  --flare-color-5: light-dark(hsl(var(--flare-tint-1) calc(0.9 * var(--flare-saturation)) 50%), hsl(var(--flare-tint-1) calc(0.5 * var(--flare-saturation)) 55%));
  --flare-color-6: light-dark(hsl(var(--flare-tint-1) calc(0.9 * var(--flare-saturation)) 50% / 0.1), hsl(var(--flare-tint-1) calc(0.5 * var(--flare-saturation)) 55% / 0.1));
}

body:has(.fullscreen) {
  overflow: hidden;

  .backdrop {
    background-color: #000C;
  }

  .fullscreen {
    transform: translate(var(--x), var(--y)) scale(calc(0.9 * var(--scale)));
    translate: var(--xscroll) var(--yscroll);
    z-index: 10000;
  }
}

/* ------------------------------------------------ */

input, textarea, select {
  background-color: #0000;
  border: none;
  color: var(--text-color);
  border-bottom: 1px solid #333;
}

select option {
  background-color: var(--background-color);
}

button {
  background-color: #0000;
  border: none;
  color: var(--text-color);
}

button:hover {
  color: var(--text-color-dark);
}

/* ------------------------------------------------ */

.begin-screen hr,
nav hr,
.playback-controls hr {
  margin: 0;
  height: calc(100% - 2px);
  border-left: 1px solid var(--text-color);
  width: 0;
}

hr {
  border-bottom: 1px solid var(--border-color);
  width: 100%;
  margin: 0;
}

.link,
.link *,
a,
a:not([href]) {
  color: var(--text-color);
  fill: var(--text-color);
  text-decoration: none;
  cursor: pointer;
}

.link:hover,
.link:hover *,
a:hover,
a:hover *,
a:not([href]):hover {
  color: var(--text-color-hover);
  fill: var(--text-color-hover);
  text-decoration: none;
}

/* ------------------------------------------------ */

h1, h2, h3, h4, p, th, div, td {
  color: var(--text-color);
}

h1 {
  font-weight: bold;
  text-overflow: ellipsis;
  overflow: hidden;
  font-size: 2rem;
  margin: 0;
}

/* ------------------------------------------------ */

@keyframes bsparallax {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(40vh);
  }
}

.begin-screen {
  user-select: none;
  transform: translateY(0);
  display: flex;
  flex-direction: column;
  align-items: center;
  height: calc(100svh - var(--header-height));
  justify-content: center;
  padding-top: var(--header-height);
  overflow-y: hidden;

  > * {
    animation: bsparallax linear;
    animation-timeline: scroll(root);
  }

  .name {
    font-family: title-font;
    margin: 0;
    font-size: 3rem;
    letter-spacing: 0.3rem;
    margin-bottom: 0.2rem;
    font-weight: bold;
    color: var(--text-color-title);
    text-align: center;
  }

  .tagline {
    display: flex;
    gap: 0.5rem;
    font-size: 1rem;
    margin: 0;
    color: var(--text-color);
    line-height: 1.15;
    text-align: center;
    align-items: center;

    p {
      margin: 0;
    }
  }
}

/* ------------------------------------------------ */

.collapse-toggler {
  display: flex;
  width: 1.5rem;
  height: 1.5rem;
  overflow: hidden;
  padding: 0;
  align-items: center;
  justify-content: center;
  position: relative;

  .collapse-toggler-icon {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    transform: translateY(0px);
    
    &:before,&:after{
      position: absolute;
      content: '';
      width: 100%;
      height: 100%;
      background-color: var(--text-color);
      left: 0;
      transform: translateY(-0.5rem);
    }
    &:after{
      transform: translateY(0.5rem);
    }
  }
}

/* ------------------------------------------------ */

.pause-button {
  border: 0;
  background: transparent;
  box-sizing: border-box;
  width: 0;
  height: var(--button-size);
  border-color: transparent transparent transparent var(--text-color);
  transition: 100ms all ease;
  cursor: pointer;
  border-style: solid;
  border-width: calc(var(--button-size) / 2) 0 calc(var(--button-size) / 2) var(--button-size);

  &.paused {
    border-style: double;
    border-width: 0px 0 0px var(--button-size);
  }

  &:hover {
    border-color: transparent transparent transparent var(--text-color-dark);
  }
}

/* ------------------------------------------------ */

svg.svg-text path {
  fill: var(--text-color) !important;
}

svg.svg-text g.stroke {
  stroke: var(--text-color) !important;
}

a:hover svg.svg-text path {
  fill: var(--text-color-hover) !important;
}

a:hover svg.svg-text g.stroke {
  stroke: var(--text-color-hover) !important;
}

/* ------------------------------------------------ */
audio::-webkit-media-controls-play-button,
audio::-webkit-media-controls-panel {
  background-color: var(--playback-background-color);
}

audio::-webkit-media-controls-enclosure {
  border-radius: 0;
}

/* ------------------------------------------------ */


@keyframes parallax {
  from {
    top: 0vh;
  }
  to {
    top: -50vh;
  }
}

.grain {
  position: fixed;
  top: 0vh;
  left: 0;
  z-index: -1;
  width: 100vw;
  height: 100vh;
  opacity: 0.1;
  pointer-events: none;
  background-size: 160px 160px;
  background-repeat: repeat;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.flare {
  backdrop-filter: blur(5px);
  position: fixed;  
  top: 0vh;
  left: 0;
  z-index: -1;
  width: 100vw;
  height: 100vh;
}

.flare::before, 
.flare::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;

  opacity: 0.5;
}

.flare::before {
  background: linear-gradient(-20deg, 
    var(--flare-color-4) 0%,
    light-dark(white, black) 40%
  );
}

.flare::after {
  background: linear-gradient(15deg, 
    var(--flare-color-1) 5%,
    var(--flare-color-2) 25%,
    var(--flare-color-3) 45%,
    light-dark(white, black) 65%
  );
}

/* ------------------------------------------------ */

@keyframes gradualBlurFast {
  0% { filter: url(#blur2); }
  10% { filter: url(#blur5); }
  20% { filter: url(#blur12); }
  30% { filter: url(#blur25); }
  70% { filter: url(#blur12); }
  80% { filter: url(#blur5); }
  90% { filter: url(#blur2); }
}

@keyframes gradualBlurMedium {
  0% { filter: url(#blur1); }
  10% { filter: url(#blur2); }
  20% { filter: url(#blur5); }
  30% { filter: url(#blur8); }
  70% { filter: url(#blur5); }
  80% { filter: url(#blur2); }
  90% { filter: url(#blur1); }
}

@keyframes gradualBlurSlow {
  10% { filter: url(#blur1); }
  20% { filter: url(#blur2); }
  70% { filter: url(#blur2); }
  80% { filter: url(#blur1); }
  90% { filter: none; }
}

/* ------------------------------------------------ */