main.css

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
}

body {
  font-family: sans-serif;
}

[hidden] {
  display: none !important;
}

[disabled] {
  opacity: .5;
}

@font-face {
  font-family: wavefont;
  font-display: block;
  src: url(./asset/wavefont.woff2) format('woff2');
}

.wavefont {
  display: block;
  --wght: 33;
  font-family: wavefont;
  letter-spacing: 1.5ch;
  font-size: var(--wavefont-size, 50px);
  line-height: var(--wavefont-lh);
  font-variation-settings: 'wght' var(--wght), 'ROND' 100, 'YALN' 0;
  text-rendering: optimizeSpeed;
  font-smooth: grayscale;
  -webkit-font-smoothing: grayscale;
  -moz-osx-font-smoothing: grayscale;
}

.wavearea {
  height: 100%;
  margin: 0;
  padding: 0 2vw;
  display: flex;
  flex-direction: column;
  /* --wavefont-size: max(4rem, min(10.8vw, 6rem)); */
  --wavefont-size: 50px;
  /* Value is special: it doesn't break in mobiles */
  --wavefont-lh: calc(var(--wavefont-size) * 1.4);
  --secondary: rgb(0 0 0 / 33%);
  --primary: black;
}

.w-loading {
  cursor: wait !important;
}

.w-container {
  display: flex;
  position: relative;
  width: 100%;
  margin: 1rem auto;
  padding: 0 0 0;
  justify-content: center;
}

.w-waveform {
  position: relative;
  width: 100%;
  /* this 0.5ch fixes inconsistent breaking, seemingly round error */
  max-width: calc(4 * 216 * 1ch + 0.5ch);
  margin: 1rem;
  margin-left: 4rem;
}

.w-waveform.w-dragover {
  /* cursor: drop; */
}

.w-editarea,
.w-loader {
  outline: none;
  width: 100%;
  color: var(--primary);
}

.w-editarea {
  /* background-size: 1px calc(var(--wavefont-size) * 1.4);
  background-position: 0% 4.2rem;
  background-image:  repeating-linear-gradient(0deg, var(--secondary) -0.5px, rgb(255 255 255 / 0%) 0.5px, rgb(255 255 255 / 0%)); */
  position: relative;
}

.w-editarea p::selection {
  background-color: var(--secondary);
}

/* played samples dimmer */
.w-editarea.w-playing:before,
.w-editarea.w-playing:after {
  content: '';
  position: absolute;
  background: rgba(255, 255, 255, .75);
  pointer-events: none;
  z-index: 1;
}

.w-editarea:before {
  bottom: 0;
  left: -1px;
  right: -1px;
  top: calc(var(--carety) + var(--wavefont-lh));
}

.w-editarea:after {
  top: var(--carety);
  right: -1px;
  left: var(--caretx);
  height: var(--wavefont-lh);
}

.w-loader {
  top: 0;
  display: block;
  position: absolute;
  z-index: 1;
  pointer-events: none;
  color: var(--secondary);
}


.w-segment {
  position: relative;
  margin: 0;
  padding: 0;
  min-height: var(--wavefont-lh);

  word-break: break-all;
  white-space: break-spaces;
  line-break: anywhere;
}

.w-timecodes,
.w-status {
  position: absolute;
  top: 0;
  left: -3rem;
  font-family: sans-serif;
  letter-spacing: 0;
  font-size: .75rem;
  margin: 0;
  word-break: keep-all;
  white-space: pre;
  color: var(--secondary);
  line-height: var(--wavefont-lh);
}

.w-timecodes {
  display: flex;
  flex-direction: column;
}

.w-timecodes>* {
  margin: 0;
  text-decoration: none;
  color: var(--secondary);
}

.w-status {
  left: -4rem;
}

.w-play,
.w-caret-line,
.w-opener {
  position: absolute;
  margin-left: -3.8rem;
  width: 3rem;
  height: var(--wavefont-lh);
  top: var(--carety);
  display: flex;
  align-items: center;
  justify-content: center;
}

.w-opener {
  margin-left: -3.2rem;
}

.w-play {
  padding: 0;
  text-align: center;
  appearance: none;
  border: none;
  background: none;
  cursor: pointer;
  position: relative;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}

.w-play .w-play-clickarea {
  height: calc(var(--wavefont-lh) * 3);
  width: 100%;
  position: absolute;
  top: -100%;
}

.w-play {
  z-index: 1;
  background: linear-gradient(to bottom, rgb(255 255 255 / 0%) 0%, rgb(255 255 255 / 100%) 25%, rgb(255 255 255 / 100%) 75%, rgb(255 255 255 / 0%) 100%);
}

.w-caret-line {
  pointer-events: none;
  margin-left: -4rem;
}

.w-file {
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  overflow: hidden;
  position: absolute;
  z-index: -1;
}

.w-file+label {
  display: flex;
  align-items: center;
  font-size: 1rem;
  cursor: pointer;
  user-select: none;
}

.w-record {
  align-items: center;
  padding: 0;
  text-align: center;
  display: flex;
  appearance: none;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  user-select: none;
}


.w-playback {
  position: fixed;
  bottom: 4rem;
  width: auto;
  margin: auto;
  z-index: 2;
  display: flex;
  gap: .6rem;
  align-items: center;
  font-size: .8rem;
  padding: 1rem 1.2rem;
  border-radius: 50px;
  border: 1px solid rgb(0 0 0 / 3%);
  box-shadow: rgb(0 0 0 / 22%) 0px 4px 16px -8px, rgb(0 0 0 / 7%) 0px 1px 2px;
  background: linear-gradient(to bottom, rgb(255 255 255 / 95%) 0%, rgb(255 255 255 / 100%) 33%, rgb(255 255 255 / 100%) 100%);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.w-playback .w-play-clickarea {
  height: 4rem;
  width: 4rem;
  position: absolute;
  left: -1rem;
  top: 0;
  bottom: 0;
  margin: auto;
}

.w-time {
  font-variant-numeric: tabular-nums;
}

.w-krsnzd {
  position: fixed;
  bottom: 1.08rem;
  right: 1.08rem;
  margin: 0 auto;
  text-decoration: none;
  color: var(--primary);
  opacity: .108;
  transition: .108s ease-out;
}

.w-krsnzd:hover {
  opacity: .82;
}

.w-info-button {
  position: fixed;
  bottom: .8rem;
  right: .8rem;
  appearance: none;
  background: none;
  border: none;
  opacity: 0.25;
  cursor: pointer;
}

.w-info-button:hover {
  opacity: 1;
}

.w-info-dialog {
  padding: 1.2rem;
  border: none;
  border-radius: .8rem;
  box-shadow: rgb(0 0 0 / 22%) 0px 4px 16px -8px, rgb(0 0 0 / 7%) 0px 1px 2px;
  background: white;
  opacity: 0;
  display: none;
  transition: opacity .2s ease-out;
  inset: 0;
}

.w-info-dialog[open] {
  opacity: 1;
  margin: auto;
  display: block;
  transition: opacity .2s ease-out;
}

.w-info-dialog>* {
  margin: 0
}

.w-info-dialog::backdrop {
  background: rgba(108, 108, 108, .16);
  -webkit-backdrop-filter: blur(0px);
  backdrop-filter: blur(0px);
  transition: opacity .5s ease-out;
}

.w-info-dialog[open]::backdrop {
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}