@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

:root {
    --background-color: #1a1a1a;
    --card-background: #2c2c2c;
    --primary-color: #ffde00;
    --text-color: #ffffff;
    --shadow-color: rgba(255, 222, 0, 0.4);
    --font-family: 'Poppins', sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-image: linear-gradient(45deg, #333 25%, transparent 25%),
                      linear-gradient(-45deg, #333 25%, transparent 25%),
                      linear-gradient(45deg, transparent 75%, #333 75%),
                      linear-gradient(-45deg, transparent 75%, #333 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.container {
    background: var(--card-background);
    padding: 2rem 3rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 40px var(--shadow-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-shadow: 0 0 10px var(--shadow-color);
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.number, .number-placeholder {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    box-shadow: inset 0 -4px 8px rgba(0,0,0,0.3), 0 5px 15px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
}

.number-placeholder {
    background: #444;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.4);
}

.generate-btn {
    background-color: var(--primary-color);
    color: var(--background-color);
    font-size: 1.2rem;
    font-weight: 600;
    padding: 0.8rem 2.5rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px var(--shadow-color);
}

.generate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 25px var(--shadow-color);
}

.generate-btn:active {
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 2rem 1.5rem;
    }

    h1 {
        font-size: 2rem;
    }

    .lotto-numbers {
        gap: 0.5rem;
        flex-wrap: wrap;
    }

    .number, .number-placeholder {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}