body {
    font-family: 'Helvetica Neue', sans-serif;
    background-color: #000000;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    text-align: center;
    background-color: #1a1a1a;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
    width: 90%;
    max-width: 600px;
}

h1 {
    font-size: 2.5rem;
    color: #1a73e8;
    margin-bottom: 30px;
}

#lotto-sets-container {
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.lotto-set-row {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lotto-set-label {
    font-weight: bold;
    width: 80px;
    text-align: left;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.number {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    background-color: #333333;
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

#generate-btn {
    background-color: #1a73e8;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 15px rgba(26, 115, 232, 0.4);
}

#generate-btn:hover {
    background-color: #1558b0;
    transform: translateY(-2px);
}

#generate-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 10px rgba(26, 115, 232, 0.4);
}