/**
 * Universal Engagement System Styles
 * Mobile-first, responsive design
 * 
 * Comments have their own styles in comments.css
 */

/* ============== CSS VARIABLES ============== */
:root {
    --engagement-primary: #ff6b00;
    --engagement-primary-light: #fff8f0;
    --engagement-primary-dark: #e55a00;
    --engagement-like: #e74c3c;
    --engagement-save: #f39c12;
    --engagement-share: #3498db;
    --engagement-text: #2d3748;
    --engagement-text-muted: #718096;
    --engagement-bg: #ffffff;
    --engagement-border: #e2e8f0;
    --engagement-radius: 12px;
    --engagement-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --engagement-bg: #1a202c;
        --engagement-text: #e2e8f0;
        --engagement-text-muted: #a0aec0;
        --engagement-border: #4a5568;
    }
}

/* ============== ENGAGEMENT SECTION ============== */
.engagement-section {
    padding: 0.75rem 0;
    border-top: 1px solid var(--engagement-border);
    border-bottom: 1px solid var(--engagement-border);
    margin: 1rem 0;
}

/* ============== ENGAGEMENT BUTTONS ============== */
.engagement-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

/* Mobile: Full width buttons */
@media (max-width: 480px) {
    .engagement-buttons {
        justify-content: space-around;
    }
}

.engagement-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1rem;
    background: var(--engagement-bg);
    border: 2px solid var(--engagement-border);
    border-radius: var(--engagement-radius);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--engagement-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none !important;
    min-height: 44px; /* Touch-friendly */
}

.engagement-btn:hover {
    border-color: var(--engagement-primary);
    color: var(--engagement-primary);
    transform: translateY(-1px);
}

.engagement-btn:active {
    transform: translateY(0);
}

.engagement-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.engagement-btn i {
    font-size: 1.1rem;
    transition: all 0.2s ease;
}

/* Active states */
.engagement-btn.active {
    background: var(--engagement-primary-light);
    border-color: var(--engagement-primary);
    color: var(--engagement-primary);
}

.engagement-btn.active.like {
    background: #fdf2f2;
    border-color: var(--engagement-like);
    color: var(--engagement-like);
}

.engagement-btn.active.like i {
    color: var(--engagement-like);
}

.engagement-btn.active.save {
    background: #fffbeb;
    border-color: var(--engagement-save);
    color: var(--engagement-save);
}

.engagement-btn.active.save i {
    color: var(--engagement-save);
}

/* Loading state */
.engagement-btn.loading i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Pulse animation */
.engagement-btn.pulse {
    animation: pulse 0.6s ease-out;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* ============== INLINE ENGAGEMENT (Content Cards) ============== */
.engagement-buttons-inline {
    display: flex;
    gap: 0.25rem;
    align-items: center;
    padding: 0.5rem 0;
    border-top: 1px solid var(--engagement-border);
    margin-top: auto;
}

.engagement-buttons-inline .engagement-btn {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
    min-height: 36px;
    flex: 1;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: 8px;
}

.engagement-buttons-inline .engagement-btn:hover {
    background: var(--engagement-primary-light);
}

.engagement-buttons-inline .engagement-btn.active.like {
    background: #fdf2f2;
}

.engagement-buttons-inline .engagement-btn.active.save {
    background: #fffbeb;
}

/* ============== TOAST NOTIFICATIONS ============== */
.engagement-toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--engagement-text);
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: var(--engagement-radius);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
    font-weight: 500;
    max-width: 90vw;
}

.engagement-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.engagement-toast-success {
    background: #10b981;
}

.engagement-toast-error {
    background: #ef4444;
}

.engagement-toast-info {
    background: #3b82f6;
}

.toast-icon {
    font-size: 1.1rem;
}

/* Mobile toast positioning */
@media (max-width: 768px) {
    .engagement-toast {
        bottom: 80px;
        left: 1rem;
        right: 1rem;
        transform: translateY(100px);
        max-width: none;
    }
    
    .engagement-toast.show {
        transform: translateY(0);
    }
}

/* ============== ACCESSIBILITY ============== */
.engagement-btn:focus {
    outline: 2px solid var(--engagement-primary);
    outline-offset: 2px;
}

.engagement-btn:focus:not(:focus-visible) {
    outline: none;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============== REDUCED MOTION ============== */
@media (prefers-reduced-motion: reduce) {
    .engagement-btn,
    .engagement-toast {
        transition: none;
    }
    
    .engagement-btn.loading i {
        animation: none;
    }
    
    .engagement-btn.pulse {
        animation: none;
    }
}

/* ============== PRINT ============== */
@media print {
    .engagement-section,
    .engagement-buttons,
    .engagement-buttons-inline,
    .engagement-toast {
        display: none !important;
    }
}