:root {
    --background-color: #1a1a2e;
    --card-background: #16213e;
    --primary-text-color: #e94560;
    --secondary-text-color: #f0f0f0;
    --button-bg: #e94560;
    --button-glow: rgba(233, 69, 96, 0.4);
    --font-family: 'Poppins', sans-serif;
}

body {
    margin: 0;
    font-family: var(--font-family);
    background-color: var(--background-color);
    background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), 
                      linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 20px 20px;
    color: var(--secondary-text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 500px;
    background-color: var(--card-background);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.header h1 {
    color: var(--primary-text-color);
    font-size: 2.5rem;
    margin: 0 0 10px 0;
    font-weight: 700;
}

.header p {
    font-size: 1rem;
    margin-bottom: 30px;
}

.lotto-display {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
    min-height: 70px;
}

.lotto-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4), inset 0 2px 4px rgba(255, 255, 255, 0.2);
    animation: appear 0.5s ease-out forwards;
    transform: scale(0);
}

@keyframes appear {
    to {
        transform: scale(1);
    }
}

.generate-btn {
    font-family: var(--font-family);
    background-color: var(--button-bg);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px var(--button-glow);
}

.generate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 20px var(--button-glow);
}

.generate-btn:active {
    transform: translateY(-1px);
}