/* ============================================
   REACTIONS SYSTEM STYLES
   ============================================ */

/* Reactions Container */
.post-reactions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    position: relative; /* For picker positioning */
}

/* Individual Reaction Button */
.reaction-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    background: var(--secondary-bg);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    position: relative;
}

.reaction-btn:hover {
    background: var(--card-bg);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.reaction-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.reaction-btn.active:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
}

.reaction-emoji {
    font-size: 1.15rem;
    line-height: 1;
}

.reaction-count {
    font-size: 0.85rem;
    font-weight: 500;
    min-width: 1.2rem;
    text-align: center;
}

/* Add Reaction Button */
.add-reaction-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1.5px dashed var(--border-color);
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.add-reaction-btn:hover {
    background: var(--secondary-bg);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: scale(1.1);
}

.add-reaction-btn i {
    font-size: 1.1rem;
}

/* Reaction Picker Popup */
.reaction-picker {
    position: absolute;
    bottom: 100%;
    left: 0;
    margin-bottom: 0.75rem;
    display: none;
    grid-template-columns: repeat(8, 1fr);
    gap: 0.5rem;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    min-width: 320px;
    max-width: 400px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.reaction-picker.show {
    display: grid;
    opacity: 1;
    transform: translateY(0);
}

.reaction-picker::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 20px;
    width: 16px;
    height: 16px;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transform: rotate(45deg);
}

.reaction-option {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 2px solid transparent;
    border-radius: 8px;
    background: var(--secondary-bg);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.reaction-option:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: scale(1.25);
    box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.4);
}

.reaction-option:active {
    transform: scale(1.1);
}

/* Reaction Tooltip (shows who reacted) */
.reaction-tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    display: none;
    padding: 0.5rem 0.85rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
    font-size: 0.8rem;
    color: var(--text-primary);
    z-index: 999;
    pointer-events: none;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.reaction-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--card-bg);
}

.reaction-btn:hover .reaction-tooltip {
    display: block;
}

/* Reaction Animation */
@keyframes reactionPop {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.reaction-btn.just-added {
    animation: reactionPop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Loading State */
.reaction-btn.loading {
    opacity: 0.5;
    pointer-events: none;
}

.reaction-btn.loading .reaction-emoji {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.95);
    }
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .post-reactions {
        gap: 0.4rem;
        padding-top: 0.75rem;
        margin-top: 0.75rem;
    }
    
    .reaction-btn {
        padding: 0.35rem 0.7rem;
        font-size: 0.8rem;
        border-radius: 18px;
    }
    
    .reaction-emoji {
        font-size: 1.05rem;
    }
    
    .reaction-count {
        font-size: 0.8rem;
    }
    
    .add-reaction-btn {
        width: 32px;
        height: 32px;
    }
    
    /* Mobile Picker - Full Width Bottom Sheet Style */
    .reaction-picker {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        margin: 0;
        grid-template-columns: repeat(6, 1fr);
        min-width: 100%;
        max-width: 100%;
        padding: 1rem 1rem 1.5rem;
        border-radius: 20px 20px 0 0;
        box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
        transform: translateY(100%);
    }
    
    .reaction-picker.show {
        transform: translateY(0);
    }
    
    .reaction-picker::before {
        display: none;
    }
    
    /* Mobile Picker Handle */
    .reaction-picker::after {
        content: '';
        position: absolute;
        top: 0.5rem;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 4px;
        background: var(--border-color);
        border-radius: 2px;
    }
    
    .reaction-option {
        width: 44px;
        height: 44px;
        font-size: 1.6rem;
        border-radius: 12px;
    }
    
    .reaction-option:hover {
        transform: scale(1.15);
    }
    
    .reaction-option:active {
        transform: scale(0.95);
    }
    
    /* Tooltip disabled on mobile */
    .reaction-btn:hover .reaction-tooltip {
        display: none;
    }
}

/* ============================================
   DARK MODE
   ============================================ */

[data-theme="dark"] .reaction-btn {
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .reaction-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .reaction-btn.active {
    box-shadow: 0 2px 12px rgba(var(--accent-rgb), 0.5);
}

[data-theme="dark"] .reaction-picker {
    background: var(--card-bg);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .reaction-picker::before {
    background: var(--card-bg);
    border-right-color: rgba(255, 255, 255, 0.1);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .reaction-option {
    background: rgba(255, 255, 255, 0.05);
    border-color: transparent;
}

[data-theme="dark"] .reaction-option:hover {
    background: var(--accent-color);
    box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.5);
}

[data-theme="dark"] .add-reaction-btn {
    border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .add-reaction-btn:hover {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .reaction-tooltip {
    background: rgba(30, 30, 30, 0.95);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .reaction-tooltip::after {
    border-top-color: rgba(30, 30, 30, 0.95);
}

/* Mobile Dark Mode */
@media (max-width: 768px) {
    [data-theme="dark"] .reaction-picker {
        box-shadow: 0 -4px 32px rgba(0, 0, 0, 0.7);
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.reaction-btn:focus-visible,
.add-reaction-btn:focus-visible,
.reaction-option:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .reaction-btn,
    .reaction-picker,
    .reaction-option {
        transition: none;
        animation: none;
    }
    
    .reaction-btn.just-added {
        animation: none;
    }
}