body {
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom right, #f3e5f5, #fce4ec);
    font-family: 'Comic Sans MS', cursive, sans-serif;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: auto;
    padding: 30px;
}

.back-button {
    display: inline-block;
    margin-bottom: 15px;
    text-decoration: none;
    font-weight: bold;
    color: #7b1fa2;
    background-color: #e1bee7;
    padding: 10px 20px;
    border-radius: 25px;
    transition: background-color 0.3s ease;
}

    .back-button:hover {
        background-color: #ce93d8;
    }

h1, h2 {
    text-align: center;
    color: #7b1fa2;
}

.intro {
    max-width: 800px;
    margin: 20px auto;
    font-size: 17px;
    line-height: 1.6;
    text-align: center;
}

.calculator {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
    margin-top: 30px;
}

.input-panel,
.output-panel {
    background-color: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    flex: 1;
    min-width: 300px;
}

    .input-panel h2, .output-panel h2 {
        color: #7b1fa2;
        text-align: center;
    }

label {
    display: block;
    margin: 15px 0 5px;
    font-weight: bold;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 16px;
}

button {
    margin-top: 25px;
    padding: 12px 30px;
    font-size: 16px;
    background-color: #ba68c8;
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    display: block;
    width: 100%;
}

    button:hover {
        background-color: #9c27b0;
    }

#interestChart {
    max-width: 100%;
    margin: 30px auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
}

th, td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #ccc;
}

thead th {
    background-color: #ede7f6;
}