body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f9f9f9;
}

.calculator {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 20px;
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.calculator-header {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(90deg, #4C61FC, #4C61FC);
    -webkit-background-clip: text;
    color: transparent;
    margin-bottom: 20px;
}

.calculator-result {
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
}

.calculator-details {
    font-size: 0.9rem;
    color: #666;
    margin: 10px 0;
}

input[type="range"] {
    width: 100%;
    margin: 15px 0;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 5px;
    background: linear-gradient(90deg, #4C61FC, #4C61FC);
    outline: none;
    opacity: 0.9;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: #fff;
    border: 2px solid #4C61FC;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.slider-value {
    font-size: 0.9rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.apply-btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(90deg, #4C61FC, #4C61FC);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s;
}

.apply-btn:hover {
    background: linear-gradient(90deg, #4C61FC, #4C61FC);
}