/* Animation Keyframes */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

.animate-slide-up {
    animation: slideInUp 0.5s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.5s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Tool-specific animations */
.calculator-icon {
    animation: float 4s ease-in-out infinite;
}

.image-tool-icon {
    animation: pulse 3s ease-in-out infinite;
}

.text-tool-icon {
    animation: float 3.5s ease-in-out infinite;
}

.converter-icon {
    animation: pulse 2.5s ease-in-out infinite;
}

/* Page transition animations */
.page-transition {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease-out;
}

.page-transition.active {
    opacity: 1;
    transform: translateY(0);
}

/* Card hover animations */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* Button hover animations */
.btn {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::after {
    width: 300px;
    height: 300px;
}

/* List item hover animations */
.list-group-item {
    transition: all 0.3s ease;
}

.list-group-item:hover {
    transform: translateX(5px);
    background-color: rgba(108, 92, 231, 0.1);
}

/* Loading animations */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--text-secondary);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive animations */
@media (max-width: 768px) {
    .card:hover {
        transform: translateY(-3px);
    }
    
    .list-group-item:hover {
        transform: translateX(3px);
    }
}