body {
    font-family: 'Arial', sans-serif;
    background-color: #1a1a1a;
    color: #ffcc00;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #333;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(255, 204, 0, 0.3);
    max-width: 600px;
    width: 100%;
}

h1, h2 {
    color: #ffcc00;
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 28px;
    text-shadow: 2px 2px 4px #000;
}

h2 {
    font-size: 22px;
}

.converter, .balance-section, .history-section {
    background-color: #444;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

input, select, button {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: none;
    border-radius: 5px;
    background-color: #555;
    color: #ffcc00;
    font-size: 16px;
}

button {
    background-color: #ffcc00;
    color: #1a1a1a;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #ffd633;
}

#result, #balance-display {
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    margin-top: 15px;
    padding: 10px;
    background-color: #555;
    border-radius: 5px;
}

.currency-select {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.currency-select label {
    flex: 1;
    margin-right: 10px;
}

.currency-select select {
    flex: 2;
}

#history-list {
    list-style-type: none;
    padding: 0;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 10px;
}

#history-list li {
    background-color: #555;
    margin-bottom: 5px;
    padding: 10px;
    border-radius: 5px;
}

#clear-history {
    background-color: #ff4444;
}

#clear-history:hover {
    background-color: #ff6666;
}