body {
    font-family: 'Poppins', sans-serif;
    color: #212529;
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradient-animation 15s ease infinite;
}

@keyframes gradient-animation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.header-gradient {
    background: linear-gradient(90deg, #6C63FF, #4CC9F0);
    color: white;
    padding: 4rem 0;
    margin-bottom: 3rem;
}

.calculator-card {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-control, .form-select {
    border-radius: 0.5rem;
}

.btn-primary {
    background-color: #6C63FF;
    border-color: #6C63FF;
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
}

.btn-primary:hover {
    background-color: #574fd8;
    border-color: #574fd8;
}

.result {
    background-color: #e9ecef;
    padding: 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
}

.result h3 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.result p {
    font-size: 1.5rem;
    font-weight: 700;
    color: #6C63FF;
    margin-bottom: 0;
}

footer {
    padding: 2rem 0;
    margin-top: 3rem;
    background-color: #FFFFFF;
}