.button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: max-content;
  min-height: 32px;
  padding: 4px 8px;
  
  font-size: var(--font-size--ui);
  font-weight: var(--font-weight--regular);
  line-height: var(--line-height--ui);
  text-align: center;
  text-decoration: none;
  
  gap: 6px;
  /* border: var(--border-width--base) solid transparent; */
  border-radius: var(--border-radius--base);
  cursor: pointer;
  
  &:has(kbd) {
    padding-right: 4px;
  }

  &:focus-visible {
    outline: var(--border-width--thick) solid var(--color--primary-base);
    outline-offset: 2px;
  }

  &:hover,
  &:focus-visible {
    text-decoration: none;
  }
}

.button--primary {
  background-color: var(--color--max-text);
  color: var(--color--text-inverse);
  &:not(:disabled):hover,
  &:not(:disabled):focus-visible {
    color: var(--color--text-inverse);
    background-color: var(--color--aaa-high-contrast-text);
  }

  svg { color: var(--color--bg-max); }

  kbd {
    color: inherit;
    background-color: transparent;
    border-color: color-mix(in srgb, var(--color--bg-max), transparent 50%);
    opacity: 1;
  }

  &.button--tone-critical {
    background-color: var(--color--aaa-text-critical);
    &:not(:disabled):hover,
    &:not(:disabled):focus-visible {
      background-color: var(--color--bg-critical-dark, darkred);
    }
  }
}

.button--secondary {
  background-color: transparent;
  box-shadow: inset 0 0 0 var(--border-width--base) var(--color--border-low-contrast);
  color: var(--color--max-text);
  &:not(:disabled):hover,
  &:not(:disabled):focus-visible {
    color: var(--color--max-text);
    box-shadow: inset 0 0 0 var(--border-width--base) var(--color--border-mid-contrast);

    kbd {
      border-color: var(--color--border-mid-contrast);
    }
  }

  &.button--tone-critical {
    svg { color: var(--color--aaa-text-critical); }

    &:not(:disabled):hover,
    &:not(:disabled):focus-visible {
      color: var(--color--aaa-text-critical);
      box-shadow: inset 0 0 0 var(--border-width--base) var(--color--aaa-text-critical);
    }
  }
}

.button--tertiary {
  background-color: transparent;
  
  &:not(:disabled):hover,
  &:not(:disabled):focus-visible {
    background-color: var(--color--bg-3);

    kbd {
      border: 1px solid var(--color--border-mid-contrast)
    }
  }
}

/* Create tone: pink accent, modeled after the floating action button. */
.button--tone-create {
  --create-bg: #FFBCE3;
  --create-text: #A40073;
  --create-accent: #EC67B4;

  padding-left: 12px;
  padding-right: 12px;

  color: var(--create-text);
  border-radius: 999px;

  svg { color: var(--create-text); }

  kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    min-width: 24px;
    height: 24px;
    padding: 2px 6px;
    color: var(--create-accent);
    font-weight: var(--font-weight--regular);
    border: 1px solid color-mix(in srgb, var(--create-accent), transparent 50%);
    border-radius: 999px;
    opacity: 1;
  }
}

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

  &:not(:disabled):hover,
  &:not(:disabled):focus-visible {
    color: var(--create-text);
    background-color: color-mix(in srgb, var(--create-bg), var(--create-text) 12%);
  }
}

.button--secondary.button--tone-create {
  box-shadow: inset 0 0 0 var(--border-width--base) var(--create-bg);

  &:not(:disabled):hover,
  &:not(:disabled):focus-visible {
    color: var(--create-text);
    box-shadow: inset 0 0 0 var(--border-width--base) var(--create-accent);
  }
}

.button--tertiary.button--tone-create {
  &:not(:disabled):hover,
  &:not(:disabled):focus-visible {
    color: var(--create-text);
    background-color: color-mix(in srgb, var(--create-bg), transparent 65%);
  }
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.tag-edit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--color--aa-text);
  background: none;
  border: none;
  &:hover { color: var(--color--max-text); }
}

.fat-link {
  display: block;
  width: 100%;
  padding: var(--input-padding);
  text-align: center;
  text-decoration-style: dashed;
  text-underline-offset: 5px;
  &:hover { text-decoration-style: solid; }
}

.icon-to {
  width: fit-content;
  height: fit-content;
  color: var(--color--aa-text);
  &:hover { color: var(--color--max-text); }

  &.critical:hover { color: red; }
}