@layer components {
  /* Tooltip - Pure CSS floating balloon tooltips
   * Usage: Add data-tooltip="Text" to any element
   * Positions: data-tooltip-position="top|bottom|left|right" (default: top)
   */

  [data-tooltip] {
    position: relative;
  }

  [data-tooltip]::before,
  [data-tooltip]::after {
    position: absolute;
    z-index: 200;
    pointer-events: none;
    opacity: 0;
    transition:
      opacity var(--duration-fast) var(--ease-out),
      transform var(--duration-fast) var(--ease-out);
  }

  /* Tooltip content bubble */
  [data-tooltip]::after {
    content: attr(data-tooltip);
    padding: 0.375rem 0.625rem;
    background: var(--color-text);
    color: var(--color-bg-elevated);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.4;
    white-space: nowrap;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    letter-spacing: 0.01em;
  }

  /* Arrow pointer */
  [data-tooltip]::before {
    content: "";
    border: 5px solid transparent;
  }

  /* Default position: top */
  [data-tooltip]::after {
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
  }

  [data-tooltip]::before {
    bottom: calc(100% - 2px);
    left: 50%;
    transform: translateX(-50%);
    border-top-color: var(--color-text);
    border-bottom-width: 0;
  }

  /* Show on hover and focus */
  [data-tooltip]:hover::before,
  [data-tooltip]:hover::after,
  [data-tooltip]:focus-visible::before,
  [data-tooltip]:focus-visible::after {
    opacity: 1;
  }

  [data-tooltip]:hover::after,
  [data-tooltip]:focus-visible::after {
    transform: translateX(-50%) translateY(0);
  }

  /* Position: bottom */
  [data-tooltip-position="bottom"]::after {
    bottom: auto;
    top: calc(100% + 8px);
    transform: translateX(-50%) translateY(-4px);
  }

  [data-tooltip-position="bottom"]::before {
    bottom: auto;
    top: calc(100% - 2px);
    border-top-color: transparent;
    border-bottom-color: var(--color-text);
    border-top-width: 0;
    border-bottom-width: 5px;
  }

  [data-tooltip-position="bottom"]:hover::after,
  [data-tooltip-position="bottom"]:focus-visible::after {
    transform: translateX(-50%) translateY(0);
  }

  /* Position: left */
  [data-tooltip-position="left"]::after {
    bottom: auto;
    left: auto;
    right: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%) translateX(4px);
  }

  [data-tooltip-position="left"]::before {
    bottom: auto;
    left: auto;
    right: calc(100% - 2px);
    top: 50%;
    transform: translateY(-50%);
    border-top-color: transparent;
    border-left-color: var(--color-text);
    border-right-width: 0;
    border-left-width: 5px;
  }

  [data-tooltip-position="left"]:hover::after,
  [data-tooltip-position="left"]:focus-visible::after {
    transform: translateY(-50%) translateX(0);
  }

  /* Position: right */
  [data-tooltip-position="right"]::after {
    bottom: auto;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%) translateX(-4px);
  }

  [data-tooltip-position="right"]::before {
    bottom: auto;
    left: calc(100% - 2px);
    top: 50%;
    transform: translateY(-50%);
    border-top-color: transparent;
    border-right-color: var(--color-text);
    border-left-width: 0;
    border-right-width: 5px;
  }

  [data-tooltip-position="right"]:hover::after,
  [data-tooltip-position="right"]:focus-visible::after {
    transform: translateY(-50%) translateX(0);
  }

  /* Delay before showing (prevents flashing on quick mouse passes) */
  [data-tooltip]::before,
  [data-tooltip]::after {
    transition-delay: 0.1s;
  }

  /* Hide tooltip when element is disabled or has empty tooltip */
  [data-tooltip=""]::before,
  [data-tooltip=""]::after,
  [data-tooltip]:disabled::before,
  [data-tooltip]:disabled::after {
    display: none;
  }
}