/*
 * Shared tooltip. Add `data-tooltip="Label"` to any element — no JS required.
 * General rule: any icon-only control (no visible text label) must carry
 * data-tooltip instead of (or in addition to a matching) aria-label.
 */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after,
[data-tooltip]::before {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 8px);
    transform: translate(-50%, 4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.12s ease, transform 0.12s ease;
    transition-delay: 0s;
    z-index: 1000;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    background: var(--text);
    color: var(--bg);
    font-family: 'Google Sans', Roboto, Arial, sans-serif;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1px;
    line-height: 1.4;
    white-space: nowrap;
    padding: 6px 10px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.18);
}

[data-tooltip]::before {
    content: '';
    bottom: 100%;
    margin-bottom: 2px;
    border: 5px solid transparent;
    border-top-color: var(--text);
    border-bottom-width: 0;
}

[data-tooltip]:hover::after,
[data-tooltip]:hover::before,
[data-tooltip]:focus-visible::after,
[data-tooltip]:focus-visible::before {
    opacity: 1;
    transform: translate(-50%, 0);
    transition-delay: 0.35s;
}

/* Disabled controls still explain themselves on hover */
[data-tooltip]:disabled { pointer-events: auto; }

/* Flip below the element when it's near the top of the viewport
   (the topbar's icon row) so the bubble never clips off-screen. */
[data-tooltip-placement="bottom"]::after,
[data-tooltip-placement="bottom"]::before {
    bottom: auto;
    top: calc(100% + 8px);
    transform: translate(-50%, -4px);
}
[data-tooltip-placement="bottom"]::before {
    top: 100%;
    bottom: auto;
    margin-bottom: 0;
    margin-top: 2px;
    border-top-color: transparent;
    border-bottom-color: var(--text);
    border-bottom-width: 5px;
    border-top-width: 0;
}
[data-tooltip-placement="bottom"]:hover::after,
[data-tooltip-placement="bottom"]:hover::before,
[data-tooltip-placement="bottom"]:focus-visible::after,
[data-tooltip-placement="bottom"]:focus-visible::before {
    transform: translate(-50%, 0);
}