/* The controls: the file picker on the home page and the player under the stage. Their
   colours come from the custom properties style.css describes. */

/* The file picker sits in the empty roll above the keyboard. It shows while a file is dragged
   over the page, even when hidden. */
.drop {
  position: absolute;
  inset: 0 0 var(--keyboard) 0;
  display: grid;
  place-items: center;
  padding: 16px;
}

.drop[hidden] {
  display: none;
}

.stage.over .drop[hidden] {
  display: grid;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  max-width: 28rem;
  padding: 22px 24px;
  background: var(--background);
  border: 1px dashed var(--felt);
  border-radius: var(--radius);
}

.stage.over .card {
  border-style: solid;
  border-color: var(--text);
}

.card h2 {
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.2;
}

.card > p {
  color: var(--muted);
  font-size: 0.9375rem;
}

.needs {
  display: grid;
  gap: 4px;
  font-size: 0.9375rem;
}

.needs div {
  display: flex;
  gap: 12px;
}

.needs dt {
  min-width: 9.5em;
  color: var(--muted);
}

.needs dd {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.needs [data-chosen] dd {
  color: var(--text);
}

.error {
  color: var(--error);
  font-size: 0.9375rem;
  white-space: pre-line;
}

.error:empty {
  display: none;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

button:disabled {
  cursor: default;
}

/* A white key's colour, the page's one solid control. */
.primary {
  padding: 9px 18px;
  border: 0;
  border-radius: var(--radius);
  background: var(--key);
  color: var(--background);
  font-weight: 600;
}

.primary:hover {
  background: color-mix(in srgb, var(--key) 86%, var(--background));
}

/* Padded above and below for a finger, without moving the text. */
.quiet {
  padding: 8px 0;
  margin-block: -8px;
  border: 0;
  background: none;
  text-decoration: underline;
  text-decoration-color: var(--felt);
  text-underline-offset: 3px;
}

.quiet:hover {
  text-decoration-color: currentColor;
}

/* The player under the stage: play, the time, the seek bar and the hands' colours. */
.transport {
  max-width: var(--stage-width);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding-block: 14px;
}

.play {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--key);
  color: var(--background);
}

.play:disabled {
  opacity: 0.35;
}

.play svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.play .icon-pause,
.play[data-playing] .icon-play {
  display: none;
}

.play[data-playing] .icon-pause {
  display: block;
}

.time {
  min-width: 6.5em;
  color: var(--muted);
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}

/* A 4px track in a bar tall enough to hit with a finger. */
.seek {
  flex: 1 1 200px;
  height: 32px;
  margin: 0;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
}

.seek:disabled {
  opacity: 0.35;
}

.seek::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(
    to right,
    var(--text) var(--progress, 0%),
    var(--felt) var(--progress, 0%)
  );
}

.seek::-webkit-slider-thumb {
  width: 14px;
  height: 14px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--key);
  -webkit-appearance: none;
}

.seek::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: var(--felt);
}

.seek::-moz-range-progress {
  height: 4px;
  border-radius: 2px;
  background: var(--text);
}

.seek::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: 0;
  border-radius: 50%;
  background: var(--key);
}

.legend {
  color: var(--muted);
  font-size: 0.875rem;
  white-space: nowrap;
}

.legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 6px;
  border-radius: 2px;
  vertical-align: -1px;
}

.legend i.left {
  margin-left: 12px;
  background: var(--left);
}

.legend i.right {
  background: var(--right);
}

/* The effects panel: a slider an effect, for trying their strengths. */
.effects:not([hidden]) {
  display: grid;
  grid-template-columns: max-content minmax(120px, 280px) 3.5em;
  align-items: center;
  gap: 4px 14px;
  max-width: var(--stage-width);
  padding-bottom: 14px;
  color: var(--muted);
  font-size: 0.9375rem;
}

.effects input {
  margin: 0;
  accent-color: var(--key);
}

.effects output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.effects button {
  grid-column: 1;
  justify-self: start;
}

.loaded {
  max-width: var(--stage-width);
  color: var(--muted);
  font-size: 0.9375rem;
}

.loaded .names {
  color: var(--text);
}

/* On a phone the roll is too short to hold the picker, so it goes under the stage. */
@media (max-width: 640px) {
  .drop {
    position: static;
    display: block;
    padding: 12px 0 0;
  }

  .card {
    max-width: none;
  }
}