* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial;
}

body {
    background: #0f172a;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 500px;
    background: #1e293b;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
}

.balance {
    margin: 10px 0;
}

.summary {
    display: flex;
    justify-content: space-between;
    margin: 15px 0;
}

.income, .expense {
    width: 48%;
    padding: 10px;
    border-radius: 10px;
    background: #334155;
}

.form {
    margin-top: 15px;
}

input {
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    border: none;
    border-radius: 8px;
}

button {
    width: 100%;
    padding: 10px;
    border: none;
    background: #22c55e;
    color: white;
    border-radius: 8px;
    cursor: pointer;
}

ul {
    list-style: none;
    margin-top: 15px;
}

li {
    background: #334155;
    margin-top: 10px;
    padding: 10px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
}

.delete {
    background: red;
    border: none;
    color: white;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
}