.fade-in-up {
        animation: fadeInUp 0.6s ease-out;
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .btn-loading {
        position: relative;
        overflow: hidden;
        pointer-events: none;
    }

    .btn-loading::before {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        animation: ripple 1s ease-out;
    }

    .btn-loading::after {
        content: "";
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
        animation: shimmer 1.5s infinite;
    }

    @keyframes ripple {
        0% {
            width: 0;
            height: 0;
            opacity: 0.5;
        }
        100% {
            width: 500px;
            height: 500px;
            opacity: 0;
        }
    }

    @keyframes shimmer {
        0% {
            transform: translateX(-100%);
        }
        100% {
            transform: translateX(100%);
        }
    }

    .btn-pulse {
        animation: pulse 0.5s ease-out;
    }

    @keyframes pulse {
        0% {
            transform: scale(1);
            box-shadow: 0 0 0 0 rgba(0,123,255, 0.7);
        }
        50% {
            transform: scale(0.98);
            box-shadow: 0 0 0 10px rgba(0,123,255, 0);
        }
        100% {
            transform: scale(1);
            box-shadow: 0 0 0 0 rgba(0,123,255, 0);
        }
    }

    .form-control:focus {
        transform: scale(1.02);
        transition: transform 0.2s ease;
    }