* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --green: #00ff88;
    --green-soft: #86c89f;
    --border: rgba(0,255,120,0.18);
    --bg: #050505;
}

body {
    background: radial-gradient(circle at top, #0a160f, #050505 60%);
    min-height: 100vh;
    font-family: monospace;
    color: white;
    text-align: center;
    padding: 14px;
    overflow-x: hidden;
}

/* animated ambient glow */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at 50% 30%, rgba(0,255,120,0.08), transparent 60%);
    animation: pulseBg 5s infinite alternate ease-in-out;
    pointer-events: none;
    filter: blur(0px);
}

@keyframes pulseBg {
    from { transform: scale(1); opacity: 0.45; }
    to { transform: scale(1.15); opacity: 0.85; }
}

/* shared fade-in slide animation (header, footer) */
@keyframes fadeSlide {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}