lbry-desktop/ui/scss/component/_button.scss

.button {
  display: inline-block;
  position: relative;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}

.button--primary,
.button--secondary,
.button--alt,
.button--link {
  border-radius: var(--border-radius);

  &:focus {
    @include focus;
    z-index: 2; // Ensure focus box-shadow is always visible on every button side
  }
}

.button--primary,
.button--secondary,
.button--alt {
  height: var(--height-button);
  border-radius: var(--border-radius);
  padding: var(--spacing-s) var(--spacing-m);
  line-height: 1.2;
  font-weight: var(--font-weight-bold);

  @media (max-width: $breakpoint-small) {
    font-size: var(--font-small);
  }
}

.button--primary {
  background-color: var(--color-button-primary-bg);
  color: var(--color-button-primary-text);

  &:hover {
    color: var(--color-button-primary-hover-text);
    background-color: var(--color-button-primary-bg-hover);
  }

  .credit-amount {
    color: var(--color-button-primary-text);

    .icon {
      margin-left: 3px;
      margin-right: 2px;
    }
  }
}

.button--secondary {
  background-color: var(--color-button-secondary-bg);
  border: 1px solid var(--color-button-secondary-border);
  color: var(--color-button-secondary-text);

  &:hover {
    background-color: var(--color-button-secondary-bg-hover);
  }
}

.button--alt {
  background-color: var(--color-button-alt-bg);
  color: var(--color-button-alt-text);

  &:hover {
    background-color: var(--color-button-alt-bg-hover);
  }
}

.button--icon {
  width: 5rem;
  height: 5rem;
  background-repeat: no-repeat;
  background-size: 50%;
  border-radius: 50%;
  transition: background-color 0.2s;
  background-color: var(--color-primary);

  &:hover {
    background-color: var(--color-button-primary-bg-hover);
  }

  &.button--play {
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink'%3E %3Cg stroke='white' stroke-width='2' fill='white' fill-rule='evenodd' stroke-linejoin='round'%3E %3Cpolygon points='5 21 5 3 21 12'/%3E %3C/g%3E %3C/svg%3E");
    background-position: calc(50% + 0.1rem) center;
  }

  &.button--view {
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink'%3E %3Cg stroke='white' stroke-width='2' fill='none' fill-rule='evenodd'%3E %3Cpath d='M2, 12 C2, 12 5, 5 12, 5 C19, 5 22, 12 22, 12 C22, 12 19, 19 12, 19 C5, 19 2, 12 2, 12 Z' stroke-linejoin='round'/%3E %3Ccircle cx='12' cy='12' r='3'/%3E %3Cpath d='M12, 5 L12, 3' stroke-linecap='round'/%3E %3Cpath d='M18, 6.5 L19, 5' stroke-linecap='round'/%3E %3Cpath d='M21, 10 L22.5, 9' stroke-linecap='round'/%3E %3Cpath d='M1.5, 10 L3, 9' stroke-linecap='round' transform='translate(2.250000, 9.500000) scale(1, -1) translate(-2.250000, -9.500000)'/%3E %3Cpath d='M5, 6.5 L6, 5' stroke-linecap='round' transform='translate(5.500000, 5.750000) scale(-1, 1) translate(-5.500000, -5.750000)'/%3E %3C/g%3E %3C/svg%3E");
    background-position: center calc(50% + 0.1rem);
  }
}

.button--link {
  color: var(--color-link);
  transition: color 0.2s;
  word-break: break-all;
  font-weight: var(--font-weight-bold);

  &:hover {
    text-decoration: underline;
    color: var(--color-link-hover);
  }
}

.button--danger {
  @extend .button--link;
  color: var(--color-error);
}

.button--uri-indicator {
  @extend .button--link;
  color: var(--color-text-subtitle);
  max-width: 100%;
  text-align: left;
  transition: color 0.2s;

  .channel-name {
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
  }

  .markdown-preview & {
    height: initial;
    vertical-align: initial;
  }
}

.button--close {
  z-index: 1;
  position: absolute;
  top: var(--spacing-xxs);
  right: var(--spacing-xxs);
  padding: 0.3rem;
  transition: all var(--transition-duration) var(--transition-style);
  border-radius: var(--card-radius);
  color: var(--color-text);
  font-size: var(--font-body);

  svg {
    height: 1rem;
    width: 1rem;
  }

  &:hover {
    color: var(--color-button-primary-text);
    background-color: var(--color-button-primary-bg);
  }

  &:focus {
    @include focus;
  }

  @media (max-width: $breakpoint-small) {
    padding: 0.8rem 0.8rem;
  }
}

.button--header-close {
  background-color: var(--color-primary-alt);
  padding: var(--spacing-s);
}

.button--download-link {
  .button__label {
    white-space: normal;
    text-align: left;
  }
}

.button--file-action {
  @extend .button--alt;
  background-color: transparent;
  margin-right: var(--spacing-m);
  padding: 0 var(--spacing-xxs);

  .icon {
    stroke: #777;
  }

  .button__label {
    min-width: 10px;
  }

  &:last-child {
    margin-right: 0;
  }

  &:hover {
    background-color: var(--color-button-alt-bg);
  }

  &:focus {
    box-shadow: none;
  }
}

.button--disabled {
  opacity: 0.5;
}

.button--highlighted {
  border: 1px solid var(--color-border);
}

.button__content {
  display: flex;
  align-items: center;
  min-width: 0;
  height: 100%;
}

.button__label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

// Handle icons on the left or right side of the button label
svg + .button__label {
  margin-left: var(--spacing-s);
}

.button__label + svg {
  margin-left: var(--spacing-xs);
}

.button-toggle {
  padding: 0 var(--spacing-m);
  height: var(--height-button);
  font-size: var(--font-base);
  border: 1px solid var(--color-border);
  border-left-width: 0;
  border-radius: 0;
  margin: 0;
  background-color: var(--color-card-background);

  @media (max-width: $breakpoint-small) {
    padding: var(--spacing-m) var(--spacing-s);
  }

  &:first-of-type {
    border-left-width: 1px;
    border-top-left-radius: var(--border-radius);
    border-bottom-left-radius: var(--border-radius);
  }

  &:last-of-type {
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    // since we're abusing "button-toggle" let it stand alone properly
    &:not(:first-of-type) {
      margin-right: var(--spacing-s);
    }
  }
}

.button-toggle--expandformobile {
  @media (max-width: $breakpoint-small) {
    display: block;
    width: 100%;
    text-align: center;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);

    &:not(:first-of-type) {
      margin-top: var(--spacing-s);
    }
  }
}

.button-toggle--active {
  color: var(--color-primary);
  background-color: var(--color-primary-alt);

  svg {
    opacity: 1;
  }

  &:hover {
    cursor: default;
    text-decoration: none;
    background-color: var(--color-primary-alt);
  }
}

.button-toggle--custom {
  color: var(--color-primary);
  svg {
    opacity: 1;
  }
}

.button-toggle__label {
  @extend label;
  display: inline-block;
  margin-top: -4px;
}

.button-tab-group {
  margin-bottom: var(--spacing-l);
}

.button-group,
.button-tab-group {
  display: flex;

  .button:first-child:not(:only-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: 1px solid var(--color-button-border);
  }

  .button:nth-child(2) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }
}

.button-toggle-group-action {
  position: absolute; // Centers the button along toggle buttons

  @media (max-width: $breakpoint-small) {
    position: relative;
    top: var(--spacing-s);
  }
}