@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

.button {
    position: relative;
    padding: 15px 30px;
    background: #1b1b1b;
    color: #0f0;
    border: 2px solid #0f0;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 600;
    cursor: pointer;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5), 0 0 40px rgba(0, 255, 0, 0.5), 0 0 60px rgba(0, 255, 0, 0.5);
}

.button:hover {
    color: #000;
    background: #0f0;
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.7), 0 0 60px rgba(0, 255, 0, 0.7), 0 0 90px rgba(0, 255, 0, 0.7);
}

.button:active {
    transform: scale(0.95);
}

.button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300%;
    height: 300%;
    background: radial-gradient(circle, rgba(0, 255, 0, 0.3) 20%, transparent 20%);
    background-size: 50% 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.5s ease;
    border-radius: 50%;
    opacity: 0;
    z-index: -1;
}

.button.animate::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.button.animate {
    box-shadow: 0 0 40px rgba(0, 255, 0, 0.8), 0 0 80px rgba(0, 255, 0, 0.8), 0 0 120px rgba(0, 255, 0, 0.8);
}
