/* Board-space anchors come from the active theme, independent of button size. */
#board-wrapper #action-buttons {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    padding: 0;
    transform: none;
    pointer-events: none;
    z-index: 4;
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms ease, visibility 0s linear 180ms;
}

#board-wrapper #action-buttons.is-visible {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}

#board-wrapper #action-buttons button {
    position: absolute;
    top: var(--nardora-action-y, 50%);
    left: var(--nardora-action-x);
    width: clamp(44px, 5.5vw, 56px);
    height: clamp(44px, 5.5vw, 56px);
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    display: grid;
    place-items: center;
    transform: translate(-50%, -50%);
    border: 1px solid var(--nardora-theme-border);
    border-radius: 50%;
    background: linear-gradient(145deg,
        var(--nardora-theme-panel-elevated), var(--nardora-theme-panel));
    color: var(--nardora-theme-muted-text);
    box-shadow: inset 0 1px 1px rgba(255, 238, 206, 0.18),
        0 2px 4px rgba(30, 15, 7, 0.38);
    text-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    pointer-events: auto;
    cursor: pointer;
    touch-action: manipulation;
    transition: color 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

#board-wrapper #undo-button {
    --nardora-action-x: var(--nardora-undo-x);
}

#board-wrapper #confirm-button {
    --nardora-action-x: var(--nardora-confirm-x);
    color: var(--nardora-theme-text);
    border-width: 2px;
}

#board-wrapper #action-buttons button::before {
    content: '';
    position: absolute;
    inset: 4px;
    border: 1px solid var(--nardora-theme-border);
    border-radius: inherit;
    opacity: 0.35;
    pointer-events: none;
}

#board-wrapper #action-buttons svg {
    width: 23px;
    height: 23px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    pointer-events: none;
}

@media (hover: hover) {
    #board-wrapper #action-buttons button:enabled:hover {
        color: var(--nardora-theme-text);
        border-color: var(--nardora-theme-muted-text);
        box-shadow: inset 0 1px 3px rgba(255, 238, 206, 0.25),
            0 2px 5px rgba(30, 15, 7, 0.42);
    }
}

#board-wrapper #action-buttons button:enabled:active {
    box-shadow: inset 0 2px 5px rgba(20, 10, 5, 0.65);
}

#board-wrapper #action-buttons button:focus-visible {
    outline: 2px solid var(--nardora-theme-text);
    outline-offset: 3px;
}

#board-wrapper #action-buttons button:disabled {
    color: var(--nardora-theme-muted-text);
    opacity: 0.5;
    cursor: default;
    box-shadow: inset 0 1px 3px rgba(20, 10, 5, 0.3);
}

#board-wrapper #confirm-button.is-auto-confirm-pending {
    border-color: var(--nardora-theme-muted-text);
    box-shadow: 0 0 0 3px var(--nardora-theme-panel);
}

@media (prefers-reduced-motion: reduce) {
    #board-wrapper #action-buttons button { transition: none; }
}