body {
    font-family: 'Pretendard', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f8f9fa;
}
.container {
    text-align: center;
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin: 20px;
}
h1 {
    color: #333;
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 2.2rem;
}
.date-info {
    color: #666;
    margin-bottom: 5px;
}
.draw-info {
    font-size: 1.3rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 30px;
}
#lotto-container {
    margin-bottom: 30px;
}
.lotto-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}
.ball {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
    font-size: 1.1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    box-shadow: inset -2px -2px 5px rgba(0,0,0,0.2);
}
.plus-sign {
    font-size: 1.5rem;
    font-weight: bold;
    color: #888;
    margin: 0 5px;
}
button {
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: bold;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.3s, transform 0.1s;
    margin-top: 10px;
}
button:hover {
    background-color: #0056b3;
}
button:active {
    transform: scale(0.98);
}