@knadh/oat/css/tooltip.css

Ultra-lightweight, zero dependency, semantic HTML/CSS/JS UI library

@layer components {
  [data-tooltip] {
    position: relative;
  }

  [data-tooltip]::before,
  [data-tooltip]::after {
    position: absolute;
    inset-inline-start: 50%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    pointer-events: none;
    z-index: calc(var(--z-modal) + 10);
  }

  /* Text */
  [data-tooltip]::after {
    content: attr(data-tooltip);
    inset-block-end: calc(100% + 10px);
    transform: translateX(-50%) translateY(4px);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-7);
    line-height: 1;
    white-space: nowrap;
    background: var(--foreground);
    color: var(--background);
    border-radius: var(--radius-medium);
  }

  /* Arrow (default: top) */
  [data-tooltip]::before {
    content: '';
    inset-block-end: calc(100% - 5px);
    transform: translateX(-50%) translateY(4px);
    border: 8px solid transparent;
    border-top-color: var(--foreground);
  }

  /* Bottom */
  [data-tooltip][data-tooltip-placement="bottom"]::after {
    inset-block-start: calc(100% + 10px);
    inset-block-end: auto;
    transform: translateX(-50%) translateY(-4px);
  }
  [data-tooltip][data-tooltip-placement="bottom"]::before {
    inset-block-start: calc(100% - 5px);
    inset-block-end: auto;
    transform: translateX(-50%) translateY(-4px);
    border-color: transparent;
    border-bottom-color: var(--foreground);
  }

  /* Left + Right */
  [data-tooltip]:is([data-tooltip-placement="left"], [data-tooltip-placement="right"])::before,
  [data-tooltip]:is([data-tooltip-placement="left"], [data-tooltip-placement="right"])::after {
    inset-block-start: 50%;
    inset-block-end: auto;
  }
  [data-tooltip]:is([data-tooltip-placement="left"], [data-tooltip-placement="right"])::before {
    border-color: transparent;
  }

  /* Left */
  [data-tooltip][data-tooltip-placement="left"]::before,
  [data-tooltip][data-tooltip-placement="left"]::after {
    inset-inline-start: auto;
    transform: translateX(4px) translateY(-50%);
  }
  [data-tooltip][data-tooltip-placement="left"]::after {
    inset-inline-end: calc(100% + 10px);
  }
  [data-tooltip][data-tooltip-placement="left"]::before {
    inset-inline-end: calc(100% - 5px);
    border-inline-start-color: var(--foreground);
  }

  /* Right */
  [data-tooltip][data-tooltip-placement="right"]::before,
  [data-tooltip][data-tooltip-placement="right"]::after {
    transform: translateX(-4px) translateY(-50%);
  }
  [data-tooltip][data-tooltip-placement="right"]::after {
    inset-inline-start: calc(100% + 10px);
  }
  [data-tooltip][data-tooltip-placement="right"]::before {
    inset-inline-start: calc(100% - 5px);
    border-inline-end-color: var(--foreground);
  }

  [data-tooltip]:is(:hover, :focus-visible)::before,
  [data-tooltip]:is(:hover, :focus-visible)::after {
    opacity: 1;
    visibility: visible;
    transition-delay: 700ms;
    transform: translateX(-50%) translateY(0);
  }
  [data-tooltip]:is([data-tooltip-placement="left"], [data-tooltip-placement="right"]):is(:hover, :focus-visible)::before,
  [data-tooltip]:is([data-tooltip-placement="left"], [data-tooltip-placement="right"]):is(:hover, :focus-visible)::after {
    transform: translateX(0) translateY(-50%);
  }
}