* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

.container {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}

.balance-container {
    text-align: center;
    margin-bottom: 30px;
}

.summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.income, .expenses {
    padding: 20px;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.income {
    background-color: #e8f5e9;
}

.expenses {
    background-color: #ffebee;
}

.transaction-form {
    margin-bottom: 30px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

input, select, button {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

button {
    background-color: #2c3e50;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #34495e;
}

.history {
    margin-bottom: 30px;
}

#transaction-list {
    list-style: none;
}

.transaction-item {
    display: grid;
    grid-template-columns: 1fr 150px 40px;
    gap: 10px;
    padding: 10px;
    margin-bottom: 5px;
    background-color: #f8f9fa;
    border-radius: 5px;
    align-items: center;
}

.transaction-description {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.transaction-amount {
    text-align: right;
    font-family: monospace;
    font-size: 1.1em;
}

.delete-btn {
    background-color: #ff4444;
    color: white;
    border: none;
    padding: 5px;
    border-radius: 3px;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-btn:hover {
    background-color: #cc0000;
}

.chart-container {
    margin-top: 30px;
    width: 100%;
    max-height: 400px;
}

@media (max-width: 600px) {
    .transaction-item {
        grid-template-columns: 1fr 100px 40px;
    }
}