CSS Electric Navbar Animation | HTML, CSS & JavaScript

:root {
            --color-bg: #090a0f;
            --color-nav-bg: #12141d;
            --color-text: #6b7280;
            --color-text-hover: #ffffff;
            --electric-cyan: #00f3ff;
            --electric-purple: #bc13fe;
            --electric-blue: #0051ff;
        }

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

body {
            background-color: var(--color-bg);
            background-image: 
                radial-gradient(circle at 50% 0%, #1a1c29 0%, transparent 50%),
                linear-gradient(0deg, transparent 24%, rgba(255,255,255,0.02) 25%, rgba(255,255,255,0.02) 26%, transparent 27%, transparent 74%, rgba(255,255,255,0.02) 75%, rgba(255,255,255,0.02) 76%, transparent 77%, transparent), 
                linear-gradient(90deg, transparent 24%, rgba(255,255,255,0.02) 25%, rgba(255,255,255,0.02) 26%, transparent 27%, transparent 74%, rgba(255,255,255,0.02) 75%, rgba(255,255,255,0.02) 76%, transparent 77%, transparent);
            background-size: 100% 100%, 50px 50px, 50px 50px;
            font-family: 'Rajdhani', sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            color: white;
        }

.navbar {
            background: rgba(18, 20, 29, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1.5rem 3rem;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(0, 243, 255, 0.02);
            position: relative;
            z-index: 10;
        }

.nav-list {
            display: flex;
            list-style: none;
            gap: 3rem;
        }

.nav-item {
            position: relative;
        }

.nav-link {
            text-decoration: none;
            color: var(--color-text);
            font-size: 1.25rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            padding: 0.5rem 1rem;
            display: block;
            transition: color 0.3s ease;
            position: relative;
        }

/* Text glow effect on hover */
        .nav-link:hover, .nav-link:focus {
            color: var(--color-text-hover);
            text-shadow: 
                0 0 5px var(--electric-cyan),
                0 0 10px var(--electric-cyan),
                0 0 20px var(--electric-blue);
            outline: none;
        }

/* The base container for the flowing line to prevent overflow issues */
        .nav-link::before {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, 
                transparent, 
                var(--electric-cyan), 
                var(--electric-purple), 
                var(--electric-blue), 
                transparent
            );
            background-size: 200% auto;
            border-radius: 5px;
            opacity: 0;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.4s cubic-bezier(0.86, 0, 0.07, 1), opacity 0.4s ease;
        }

/* Expand the line and trigger the flow animation */
        .nav-link:hover::before, .nav-link:focus::before {
            opacity: 1;
            transform: scaleX(1);
            animation: 
                laser-flow 1.5s linear infinite,
                laser-glow 2s ease-in-out infinite alternate;
        }

/* Top decorative electric spark */
        .nav-link::after {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            width: 20px;
            height: 2px;
            background: var(--electric-cyan);
            box-shadow: 0 0 10px var(--electric-cyan), 0 0 20px var(--electric-cyan);
            border-radius: 50%;
            opacity: 0;
            transform: translateX(-50%) translateY(-10px);
            transition: all 0.3s ease;
        }

.nav-link:hover::after, .nav-link:focus::after {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
            width: 60%;
            animation: top-spark 2s infinite alternate;
        }

/* Animates the gradient background to look like flowing energy */
        @keyframes laser-flow {
            0% {
                background-position: 200% center;
            }
            100% {
                background-position: -200% center;
            }
        }

/* Makes the bottom underline pulsate its glow */
        @keyframes laser-glow {
            0% {
                box-shadow: 0 0 5px var(--electric-cyan), 0 2px 5px var(--electric-blue);
            }
            50% {
                box-shadow: 0 0 15px var(--electric-cyan), 0 2px 10px var(--electric-purple), 0 0 20px var(--electric-blue);
            }
            100% {
                box-shadow: 0 0 5px var(--electric-cyan), 0 2px 5px var(--electric-blue);
            }
        }

/* Makes the top accent flicker slightly */
        @keyframes top-spark {
            0%, 100% { opacity: 0.8; width: 40%; box-shadow: 0 0 5px var(--electric-cyan); }
            50% { opacity: 1; width: 80%; box-shadow: 0 0 15px var(--electric-cyan), 0 0 25px var(--electric-purple); }
            70% { opacity: 0.5; width: 50%; box-shadow: 0 0 2px var(--electric-cyan); }
        }

/* Responsive behavior */
        @media (max-width: 768px) {
            .nav-list {
                gap: 1.5rem;
            }
            .nav-link {
                font-size: 1rem;
                padding: 0.5rem;
            }
            .navbar {
                padding: 1rem 1.5rem;
            }
        }

- CSS Electric Navbar Animation

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