h1 {
  font-size: clamp(1.65rem, 8vw, 2rem);
}

#io {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8em;
  margin: 1.2em 0 0.8em;

  @media (max-width: 700px) {
    grid-template-columns: 1fr;
  }
}

.io-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.8em;
  min-width: 0;
  padding: 1em;
  background: var(--bg-raised);
  border-radius: 4px;

  &.drag-over::after {
    content: "drop audio here";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    border: 2px dashed var(--bg-raised);
    border-radius: inherit;
    font-size: 1.25rem;
    pointer-events: none;
  }
}

.io-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.6em;

  .side-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.8em;
    height: 1.8em;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg);
    font-weight: bold;
  }
}

.io-details {
  display: flex;
  flex-direction: column;
  min-width: 0;

  .io-name, .io-meta {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .io-meta {
    color: color-mix(in srgb, var(--text) 65%, transparent);
    font-size: 0.75rem;
    font-feature-settings: "tnum";

    &:empty {
      display: none;
    }
  }
}

.file-picker {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.6em;
  background: var(--bg);
  border: 1px solid var(--bg-raised);
  border-radius: 5px;
  cursor: pointer;

  &:hover {
    border-color: var(--accent);
  }

  &:focus-within {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
  }

  .file-action {
    flex: none;
    padding: 0.2em 0.6em;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: 4px;
  }

  .file-hint {
    color: color-mix(in srgb, var(--text) 55%, transparent);
    font-size: 0.85rem;
  }
}

.level-control {
  display: grid;
  grid-template-columns: 3.6em minmax(0, 1fr) 4.6em;
  align-items: center;
  gap: 0.6em;
  font-size: 0.9rem;

  input {
    width: 100%;
    min-width: 0;
  }

  output {
    text-align: right;
    white-space: nowrap;
    font-feature-settings: "tnum";
  }

  &.global-volume {
    grid-template-columns: 3.6em minmax(0, 1fr) 5.6em;
  }
}

#transport {
  display: flex;
  flex-direction: column;
  gap: 1em;
  padding: 1em;
  background: var(--bg-raised);
  border-radius: 4px;
}

.scrub-row {
  display: grid;
  grid-template-columns: auto minmax(4em, 1fr) auto;
  align-items: center;
  gap: 0.8em;

  .play-btn {
    min-width: 5.6em;
    font-size: 1rem;

    &:not(:disabled) {
      background: var(--accent);
      color: var(--bg);
      border-color: var(--accent);
      font-weight: bold;
    }

    &:not(:disabled):hover {
      background: color-mix(in srgb, var(--accent) 85%, white);
    }

    &:disabled {
      opacity: 0.4;
      cursor: default;
    }
  }

  .scrub {
    width: 100%;
    min-width: 0;

    &:disabled {
      opacity: 0.4;
    }
  }

  .time {
    color: color-mix(in srgb, var(--text) 85%, transparent);
    font-feature-settings: "tnum";
    white-space: nowrap;
  }

  @media (max-width: 520px) {
    grid-template-columns: auto 1fr;

    .scrub {
      grid-row: 2;
      grid-column: 1 / -1;
    }

    .time {
      grid-row: 1;
      grid-column: 2;
      justify-self: end;
    }
  }
}

.transport-controls {
  display: grid;
  grid-template-columns: minmax(13em, auto) minmax(18em, 1fr);
  align-items: center;
  gap: 1.6em;

  @media (max-width: 700px) {
    grid-template-columns: 1fr;
    gap: 1em;
  }
}

.ab-switch {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  justify-content: start;
  gap: 0.8em;

  .control-label {
    font-size: 0.9rem;
  }
}

.ab-buttons {
  display: flex;

  .sel-btn {
    width: 3em;
    border-radius: 0;
    font-size: 1rem;
    font-weight: bold;

    &:first-child {
      border-radius: 4px 0 0 4px;
    }

    &:last-child {
      border-radius: 0 4px 4px 0;
    }

    & + .sel-btn {
      margin-left: -1px;
    }

    &.active {
      position: relative;
      background: var(--accent);
      color: var(--bg);
      border-color: var(--accent);
    }

    &:disabled {
      opacity: 0.4;
      cursor: default;
    }
  }
}

.status {
  min-height: 1.2em;
  margin: 0;
  color: var(--accent);
  font-size: 0.85rem;

  &:empty {
    display: none;
  }
}