* {
  box-sizing: border-box;
}

:root {
  --placeholder-color: oklch(0.8 0.1 90);
}

body {
  color: #fff;
  background: #010101;
  font-family: 'Google Sans Code', monospace;
  margin: 0;
}

button,
[type='file'],
::file-selector-button {
  color: #fff;
  border: 1px solid;
  width: 120px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  text-transform: uppercase;
  border-radius: 3px;
}

button:hover,
::file-selector-button:hover {
  filter: brightness(130%);
  cursor: pointer;
}

#play {
  padding: 0 12px;
  color: oklch(0.8 0.1 150);
  border-color: oklch(0.59 0.2 160);
  background: oklch(0.55 0.2 160 / 0.33);
  flex-shrink: 2;
  min-width: min-content;
}

#stop {
  padding: 0 12px;
  color: oklch(0.8 0.1 20);
  border-color: oklch(0.59 0.2 50);
  background: oklch(0.5 0.16 50 / 0.33);
  flex-shrink: 2;
  min-width: min-content;
}

[type='file'] {
  width: 60%;
  color: oklch(0.7 0.1 220);
  background-color: oklch(0.5 0.1 220 / 0.4);
  border: none;
  text-transform: none;
  font-weight: 200;
}

::file-selector-button {
  height: 100%;
  width: 150px;
  color: oklch(0.9 0.07 220);
  background-color: oklch(0.4 0.2 210 / 0.33);
  border-color: oklch(0.6 0.2 210);
}

form#waveform {
  padding: 2px 4px;
  border: 1px solid oklch(0.7 0 0 / 0.5);
  width: 66.7%;
  background-color: oklch(0.4 0 0 / 0.33);
  border-radius: 3px;
  text-align: right;

  &:hover {
    border-color: oklch(0.7 0 0);
  }

  display: flex;
  justify-content: space-between;
  align-items: anchor-center;
  flex-wrap: wrap;
}

@media (max-width: 700px) {
  form#waveform,
  #play,
  #stop,
  [type='file'] {
    width: 100%;
    text-align: center;
  }

  #play,
  #stop,
  ::file-selector-button {
    padding: 8px 0;
  }

  ::file-selector-button {
    width: 33.3%;
  }

  nav {
    padding-top: 3px;
    padding-bottom: 6px;
  }

  nav a {
    width: 100%;
    text-align: center;
  }
}

fieldset {
  margin: 0;
  border: none;
  margin-inline: 0;
  padding-inline: 0;
  padding-block: 0;
  display: flex;
  flex-direction: row;
}

#waveform fieldset {
  justify-self: flex-end;
}

input[type='number'],
select {
  color: #fff;
  font-family: 'Google Sans Code', monospace;
  font-size: 16px;
  background-color: oklch(0.4 0 0);
  border: 1px solid oklch(0.6 0 0);
  border-radius: 2px;
  width: 60px;
  padding-top: 0;
  padding-bottom: 0;
  text-align: right;
  align-items: center;
  width: fit-content;
  letter-spacing: -0.7px;
}

input[name='freq'] {
  width: 3.33rem;
  -moz-appearance: textfield;

  &::-webkit-outer-spin-button,
  &::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
  }
}

#base-select {
  letter-spacing: -0.1rem;
  overflow: hidden;
}

select {
  appearance: base-select;

  &::picker-icon {
    margin-left: -0.8rem;
    width: 1rem;
  }
}

select::picker(select) {
  color: #fff;
  appearance: base-select;
  background-color: oklch(0.4 0 0);
  border-radius: 2px;
  border: 1px solid oklch(0.6 0 0);
  text-align: right;
  font-family: inherit;
  font-weight: 200;
}

option {
  text-align: right;
  padding-left: 0;
  justify-content: flex-end;
  font-family: 'Google Sans Code', monospace;
}

input[type='radio'] {
  background-color: #fffa;
}

[value='sine'] {
  accent-color: oklch(0.75 0.2 210);
}

[value='triangle'] {
  accent-color: oklch(0.75 0.2 190);
}

[value='square'] {
  accent-color: oklch(0.75 0.2 160);
}

[value='sawtooth'] {
  accent-color: oklch(0.75 0.2 90);
}

section {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: space-between;

  @media (max-width: 700px) {
    flex-direction: column;
  }
}

label {
  color: #fffc;
}

label > strong {
  font-weight: 500;
  color: oklch(0.9 0.16 80);
}

label > small {
  font-size: 1rem;
  vertical-align: center;
  cursor: pointer;

  &:hover {
    color: white;
  }
}

strong.cyan {
  color: oklch(0.88 0.16 200);
}

section#canvases {
  position: relative;
}

#canvases > canvas {
  z-index: -1;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, 0%);
  background-color: rgba(0, 0, 0, 0);
}

i {
  font-size: 1.4em;
  font-style: normal;
  letter-spacing: -4.2px;
  line-height: 0.7rem;
}

i[aria-label='sine'] {
  font-size: 2rem;
}

div.cm-scroller {
  font-family: 'Google Sans Code', monospace !important;
  letter-spacing: -0.5px;
}

@keyframes rainbow-rotate {
  0% {
    color: oklch(0.7 0.22 0 /0.77);
  }

  20% {
    color: oklch(0.7 0.22 60 /0.77);
  }

  30% {
    color: oklch(0.7 0.22 120 /0.88);
  }

  40% {
    color: oklch(0.7 0.22 180/0.8);
  }

  60% {
    color: oklch(0.7 0.24 240/0.77);
  }

  80% {
    color: oklch(0.67 0.24 300 /0.77);
  }

  100% {
    color: oklch(0.7 0.22 359/0.77);
  }
}

.cm-editor {
  --placeholder: '🌀 @strudel/repl loaded! CLICK HERE TO EDIT 🌀 🌀 Remember to append ._scope()! 🌀';
}

.cm-editor::before {
  position: absolute;
  top: 50%;
  transform: translate(0%, -50%);
  width: 21rem;
  right: 1rem;
  text-align: end;
  line-height: 1.25rem;
  font-size: 0.75rem;
  font-style: italic;
  content: var(--placeholder);
  animation: rainbow-rotate 6s linear infinite;
}

.cm-editor.cm-focused::before {
  content: '';
  content-visibility: hidden;
}

nav {
  display: flex;
  align-items: center;
  text-align: center;
  padding-left: 4px;
  padding-right: 4px;
  border: 1px solid oklch(0.7 0.1 230 / 0.5);
  border-radius: 3px;
  background: oklch(0.5 0.1 230 / 0.33);

  &:hover {
    border-color: oklch(0.7 0.1 230);
  }
}

nav a {
  display: inline-block;
  line-height: 0.7rem;
  letter-spacing: -0.7px;
  font-size: small;
  color: oklch(0.7 0.1 230);
  text-decoration: none;
}

.flip {
  font-size: 1.2rem;
  display: inline-block;
  transform: scaleX(-1);
}

nav a:hover {
  text-decoration: underline;
  color: oklch(0.8 0.2 230);
}

.icons {
  align-self: center;
  padding: 0.33rem;
  width: 3rem;
  height: auto;

  @media (max-width: 700px) {
    display: none;
  }
}

nav.icon {
  @media (max-width: 700px) {
    display: none;
  }
}

.mobile-icon {
  width: 1.5rem;
  height: 1.5rem;
  padding: 0.2rem;
  border: 1px solid oklch(0.4 0.2 220);
  border-radius: 9px;
  box-sizing: content-box;
}

.mobile-icon,
.mobile-icon > img {
  vertical-align: center;
  display: none;

  @media (max-width: 700px) {
    width: 1.4rem;
    height: 1.4rem;
    display: inline-block;

    &:hover {
      filter: brightness(110%);
    }
  }
}

#repl {
  display: block;
  height: 0.75rem;
}