/* Base Styles */
body {
    font-family: Arial, sans-serif;
    background-color: #e0e5ec;
    display: flex;
    justify-content: center;
    padding: 20px;
}

.container {
    background-color: #fff;
    padding: 25px 20px;
    border-radius: 15px;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

h1,h2,h3,h4 {
    text-align: center;
    color: #333;
}

.balance {
    margin-bottom: 20px;
    text-align: center;
}

.summary {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-weight: bold;
}

.summary p span#income { color: #2e7d32; }
.summary p span#expense { color: #c62828; }

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
    justify-content: center;
}

.transaction-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 15px 0;
    justify-content: center;
}

.transaction-form input,
.transaction-form select,
.transaction-form button {
    padding: 10px;
    font-size: 15px;
    border-radius: 8px;
    border: 1px solid #ccc;
    outline: none;
    flex: 1 1 100px;
    min-width: 100px;
}

#addBtn {
    background-color: #4caf50;
    color: white;
    border: none;
    cursor: pointer;
    transition: 0.3s;
    flex: 1 1 100%;
}

#addBtn:hover { background-color: #45a049; }

#transactions {
    list-style: none;
    padding: 0;
}

#transactions li {
    display: flex;
    justify-content: space-between;
    background-color: #f7f9fc;
    margin: 5px 0;
    padding: 12px;
    border-radius: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.income { color: #2e7d32; font-weight: bold; }
.expense { color: #c62828; font-weight: bold; }

button.delete-btn {
    background-color: #ff4d4d;
    color: #fff;
    border: none;
    padding: 6px 10px;
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
    margin-top: 5px;
}

button.delete-btn:hover { background-color: #e53935; }

.chart-container {
    margin-top: 25px;
    background-color: #fdfdfd;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.charts-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 15px;
    margin-top: 25px;
}

.chart-box {
    flex: 1 1 280px;
    background-color: #fdfdfd;
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

/* Responsive Adjustments */
@media (max-width: 600px) {
    .summary {
        flex-direction: column;
        gap: 5px;
    }
    .filters, .transaction-form {
        flex-direction: column;
        gap: 10px;
    }
    .charts-row {
        flex-direction: column;
    }
    .chart-box {
        width: 100%;
    }
}