/* ==========================================================================
   Component: Floating Actions + Scroll-to-top
   Not covered by a dedicated markdown spec in this project; sourced from
   the requested reference layout: a vertical stack of quick-contact
   shortcuts (Zalo, Facebook, Hotline, Gửi Form) pinned to the right edge,
   plus a separate scroll-to-top control that only appears once the page
   has scrolled.
   Fixed position, so it sits above page content but below the mobile nav
   drawer/overlay (see --z-floating-actions in tokens.css).
   ========================================================================== */

   .floating-actions {
    position: fixed;
    right: var(--floating-actions-offset);
    bottom: var(--floating-actions-offset);
    z-index: var(--z-floating-actions);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.floating-actions__group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-2);
    background-color: var(--floating-actions-bg);
    border-radius: var(--floating-actions-radius);
    box-shadow: var(--floating-actions-shadow);
}

.floating-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: transform 0.15s ease, background-color 0.15s ease;
}

.floating-action:hover {
    background-color: var(--color-surface-alt);
    transform: translateY(-2px);
}

.floating-action + .floating-action {
    position: relative;
}

.floating-action + .floating-action::before {
    content: "";
    position: absolute;
    top: calc(-1 * var(--space-1));
    left: 10%;
    width: 80%;
    border-top: var(--border-width-sm) solid var(--color-border);
}

.floating-action__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--floating-action-size);
    height: var(--floating-action-size);
    border-radius: var(--radius-full);
    color: var(--floating-action-icon-text);
    flex-shrink: 0;
}

.floating-action__icon svg {
    width: var(--icon-size-md);
    height: var(--icon-size-md);
}

.floating-action--zalo .floating-action__icon {
    background-color: var(--floating-action-zalo-bg);
}

.floating-action--facebook .floating-action__icon {
    background-color: var(--floating-action-facebook-bg);
}

.floating-action--hotline .floating-action__icon {
    background-color: var(--floating-action-hotline-bg);
}

.floating-action--form .floating-action__icon {
    background-color: var(--floating-action-form-bg);
}

.floating-action__label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    white-space: nowrap;
}

/* Scroll-to-top — a real link to the top of the page, so it works even
   without JavaScript. JS only adds smooth scrolling and hides it until
   the page has actually scrolled (data-visible="false"). */
.scroll-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--scroll-top-size);
    height: var(--scroll-top-size);
    background-color: var(--scroll-top-bg);
    border: var(--border-width-md) solid var(--scroll-top-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    color: var(--scroll-top-icon);
    cursor: pointer;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.scroll-top[data-visible="false"] {
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    pointer-events: none;
}

.scroll-top:hover {
    background-color: var(--color-surface-alt);
}

.scroll-top svg {
    width: var(--icon-size-md);
    height: var(--icon-size-md);
}

@media (prefers-reduced-motion: reduce) {
    .floating-action,
    .scroll-top {
        transition: none;
    }
}

/* Narrow viewports — smaller footprint so it never crowds form controls */
@media (max-width: 479.98px) {
    .floating-actions {
        right: var(--space-3);
        bottom: var(--space-3);
    }

    .floating-action__label {
        display: none;
    }

    .floating-action__icon {
        width: 38px;
        height: 38px;
    }

    .scroll-top {
        width: 36px;
        height: 36px;
    }
}