:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5a623;
    --background-color: #f0f2f5;
    --text-color: #333;
    --white: #fff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-image: url("data:image/svg+xml,%3Csvg width='42' height='44' viewBox='0 0 42 44' xmlns='http://www.w3.org/2000/svg'%3E%3Cg id='Page-1' fill='none' fill-rule='evenodd'%3E%3Cg id='brick-wall' fill='%239C92AC' fill-opacity='0.1'%3E%3Cpath d='M0 0h42v44H0V0zm1 1h40v20H1V1zM0 23h20v20H0V23zm22 0h20v20H22V23z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.container {
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 10px 20px var(--shadow-color);
    text-align: center;
    padding: 30px;
    width: 100%;
    max-width: 400px;
    position: relative;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 30px;
    font-size: 2rem;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

#generate-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 15px 30px;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

#generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(74, 144, 226, 0.4);
}

.history {
    margin-top: 30px;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

#history-list li {
    background-color: #f9f9f9;
    border-radius: 6px;
    padding: 10px;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: #666;
}

footer {
    margin-top: 40px;
    color: var(--primary-color);
    font-size: 1.1rem;
    opacity: 0.8;
}