/**
 * Interactive Icon Effects - CSS
 * Optimized for performance with GPU acceleration
 */

/* Base interactive icon styles */
.interactive-icon {
    display: inline-block;
    will-change: transform, text-shadow, filter;
    transition: text-shadow 0.3s ease;
    cursor: pointer;
    position: relative;
}

/* Icons within buttons/links */
.icon-in-button {
    display: inline-flex;
    align-items: center;
    will-change: transform, filter;
}

/* Smooth transitions for all icon animations */
i[class*="fa-"],
i[class*="bi-"],
i[class*="fas"],
i[class*="far"],
i[class*="fab"] {
    transform-origin: center;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Glow effect for standalone icons on hover */
.interactive-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.interactive-icon:hover::after {
    animation: pulse-glow 0.5s ease-out forwards;
}

@keyframes pulse-glow {
    0% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(0.5);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1.5);
    }
}

/* Button icon hover effects */
button i, 
a i,
.nav-link i {
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

button:hover i,
a:hover i,
.nav-link:hover i {
    transform: scale(1.15);
}

/* Subtle glow for colored icons */
.text-primary i:hover,
.text-success i:hover,
.text-danger i:hover,
.text-warning i:hover,
.text-info i:hover {
    filter: drop-shadow(0 0 6px rgba(0, 0, 0, 0.2));
}

/* Icon animation classes */
.icon-rotate {
    animation: icon-rotate 0.6s ease-in-out;
}

@keyframes icon-rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.icon-bounce {
    animation: icon-bounce 0.6s ease-in-out;
}

@keyframes icon-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.icon-flip {
    animation: icon-flip 0.6s ease-in-out;
}

@keyframes icon-flip {
    0% {
        transform: scaleX(1);
    }
    50% {
        transform: scaleX(0);
    }
    100% {
        transform: scaleX(1);
    }
}

.icon-pulse {
    animation: icon-pulse 1.5s ease-in-out infinite;
}

@keyframes icon-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* Performance optimization: reduce motion for users who prefer it */
@media (prefers-reduced-motion: prefer-reduced) {
    .interactive-icon,
    .icon-in-button,
    i[class*="fa-"],
    i[class*="bi-"] {
        will-change: auto;
        transition: none !important;
        animation: none !important;
    }
    
    button i,
    a i,
    .nav-link i {
        transition: none;
    }

    .icon-rotate,
    .icon-bounce,
    .icon-flip,
    .icon-pulse {
        animation: none !important;
    }
}

/* Mobile optimization: disable complex animations on touch devices */
@media (hover: none) and (pointer: coarse) {
    .interactive-icon::after {
        display: none;
    }
    
    .interactive-icon:active {
        transform: scale(1.15);
    }
}