/**
 * KiemLai Universe — Content Reactions Component Styles (MS-05I)
 *
 * Scoped styling for the reusable Reaction Picker widget across Comments, Discussion, and Universe surfaces.
 * Redesigned for neutral outline LIKE default, warm active styling, and 5-reaction floating palette.
 */

.kl-reaction-widget {
    position: relative;
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    user-select: none;
    font-family: inherit;
}

/* Collapsed Trigger Button (Minimal Transparent Outline LIKE by Default) */
.kl-reaction-trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 2px 6px;
    border: none;
    border-radius: 4px;
    background-color: transparent;
    color: var(--kl-text-muted, #78716c);
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
    -webkit-tap-highlight-color: transparent;
}

.kl-reaction-trigger:hover {
    background-color: transparent;
    color: var(--kl-text-main, #44403c);
}

.kl-reaction-trigger:focus-visible {
    outline: 2px solid var(--kl-focus-ring, #d97706);
    outline-offset: 1px;
}

/* Active Reaction States (Flat Transparent with Warm Color) */
.kl-reaction-trigger.has-reaction,
.kl-reaction-trigger.has-reaction.is-like {
    border: none;
    background-color: transparent;
    color: var(--kl-primary-text, #b45309);
    font-weight: 600;
}

.kl-reaction-trigger.has-reaction:hover {
    background-color: transparent;
    color: var(--kl-primary-text, #b45309);
}

.kl-reaction-trigger__icon,
.kl-reaction-trigger__emoji {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9375rem;
    line-height: 1;
}

.kl-reaction-icon {
    display: inline-block;
    vertical-align: middle;
    width: 15px;
    height: 15px;
    color: inherit;
}

.kl-reaction-icon--filled {
    fill: currentColor;
}

.kl-reaction-trigger__count {
    font-size: 0.75rem;
    font-variant-numeric: tabular-nums;
}

.kl-reaction-trigger__count[hidden],
.kl-reaction-trigger__count:empty {
    display: none;
}

/* Expanded Reaction Palette (Floating Popover) */
.kl-reaction-palette {
    position: absolute;
    z-index: 120;
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 3px 5px;
    background-color: var(--kl-surface-card, #ffffff);
    border: 1px solid var(--kl-border-subtle, #e2e8f0);
    border-radius: 9999px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12), 0 2px 4px rgba(0, 0, 0, 0.06);
    white-space: nowrap;
    pointer-events: auto;
    bottom: calc(100% + 6px);
    left: 0;
    transform-origin: bottom left;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.kl-reaction-palette[hidden] {
    display: none !important;
}

/* Palette Vertical Positioning Overrides */
.kl-reaction-palette.kl-reaction-palette--bottom {
    bottom: auto;
    top: calc(100% + 6px);
    transform-origin: top left;
}

/* Palette Horizontal Alignment Overrides */
.kl-reaction-palette.kl-reaction-palette--align-right {
    left: auto;
    right: 0;
    transform-origin: bottom right;
}

.kl-reaction-palette.kl-reaction-palette--bottom.kl-reaction-palette--align-right {
    transform-origin: top right;
}

.kl-reaction-palette.kl-reaction-palette--align-left {
    left: 0;
    right: auto;
    transform-origin: bottom left;
}

.kl-reaction-palette.kl-reaction-palette--bottom.kl-reaction-palette--align-left {
    transform-origin: top left;
}

/* Individual Reaction Option Button (LIKE, LOVE, FIRE, HAHA, SAD) */
.kl-reaction-option {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 3px 6px;
    min-width: 32px;
    min-height: 32px;
    border: 1px solid transparent;
    border-radius: 9999px;
    background-color: transparent;
    color: var(--kl-text-muted, #78716c);
    cursor: pointer;
    transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.12s ease;
    -webkit-tap-highlight-color: transparent;
}

.kl-reaction-option:hover {
    background-color: var(--kl-surface-hover, #f5f5f4);
    transform: scale(1.18);
}

.kl-reaction-option:focus-visible {
    outline: 2px solid var(--kl-focus-ring, #d97706);
    outline-offset: 1px;
}

.kl-reaction-option.is-active {
    background-color: var(--kl-primary-subtle, #fef3c7);
    border-color: var(--kl-primary-border, #fcd34d);
    color: var(--kl-primary-text, #b45309);
    font-weight: 600;
}

.kl-reaction-option__emoji {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    line-height: 1;
}

.kl-reaction-option__count {
    font-size: 0.6875rem;
    font-variant-numeric: tabular-nums;
    color: var(--kl-text-muted, #78716c);
}

.kl-reaction-option.is-active .kl-reaction-option__count {
    color: var(--kl-primary-text, #b45309);
}

.kl-reaction-option__count[hidden],
.kl-reaction-option__count:empty {
    display: none;
}

/* In-Flight / Busy State */
.kl-reaction-widget[aria-busy="true"] .kl-reaction-trigger,
.kl-reaction-widget.is-pending .kl-reaction-trigger {
    opacity: 0.65;
    cursor: wait;
    pointer-events: none;
}

.kl-reaction-widget[aria-busy="true"] .kl-reaction-palette,
.kl-reaction-widget.is-pending .kl-reaction-palette {
    pointer-events: none;
    opacity: 0.7;
}

/* Accessible Live Region Status (Visually Hidden) */
.kl-reaction-status {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Coarse / Touch Hit Target Enhancement */
@media (pointer: coarse) {
    .kl-reaction-option {
        min-width: 44px;
        min-height: 44px;
        padding: 4px 8px;
    }

    .kl-reaction-trigger {
        min-height: 36px;
        padding: 4px 12px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .kl-reaction-trigger,
    .kl-reaction-palette,
    .kl-reaction-option {
        transition: none !important;
        animation: none !important;
        transform: none !important;
    }

    .kl-reaction-option:hover {
        transform: none !important;
    }
}