OTP verification UI | HTML, CSS & JavaScript

<div class="electric-wrapper" id="electricContainer">
        <div class="hud-panel">
            
            <div class="hud-header">
                <div class="sys-id" id="sysId">SECURE GATEWAY // AUTH_NODE_06</div>
                <h1>Identity Challenge</h1>
                <p>Input the encrypted 6-digit signature code deployed to your master synchronization terminal channel device.</p>
            </div>

<div class="hud-actions">
                    <button type="submit" class="action-submit">Verify Link</button>
                    <div class="telemetry-data">
                        SYS.STATUS: OPERATIONAL<br>
                        SIGNAL METRIC: SECURE SSL_V3
                    </div>
                </div>
            </form>

</div>
    </div>

:root {
            --bg-canvas: #030a16;
            --hud-glow: #00f0ff;
            --hud-glow-dim: rgba(0, 240, 255, 0.15);
            --hud-text: #ffffff;
            --hud-muted: #6b8fa8;
            --panel-glass: rgba(5, 15, 32, 0.85);
            --error-glow: #ff2a5f;
            --success-glow: #00ff88;
        }

* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'SF Mono', 'Fira Code', 'Segoe UI Mono', monospace;
        }

body {
            background-color: var(--bg-canvas);
            color: var(--hud-text);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            position: relative;
            margin:30px;
			scale:0.8;
        }

/* AMBIENT BACKGROUND GLOWS */
        .ambient-glow-1 {
            position: absolute;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
            top: -10%;
            right: -10%;
            pointer-events: none;
        }

.ambient-glow-2 {
            position: absolute;
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(0, 119, 255, 0.08) 0%, transparent 70%);
            bottom: -20%;
            left: -10%;
            pointer-events: none;
        }

/* ELECTRIC BORDER CONTAINER */
        .electric-wrapper {
            position: relative;
            padding: 5px; /* Increased border size to 5px */
            border-radius: 14px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.05);
            box-shadow: 0 40px 100px rgba(0, 0, 0, 0.7),
                        0 0 30px rgba(0, 240, 255, 0.1);
        }

/* The Moving Electric Light Beam */
        .electric-wrapper::before {
            content: '';
            position: absolute;
            width: 160%;
            height: 160%;
            top: -30%;
            left: -30%;
            background: conic-gradient(
                transparent 0deg, 
                transparent 120deg, 
                var(--hud-glow) 180deg, 
                var(--hud-glow) 210deg, /* Broadened arc slightly to look better at 5px */
                transparent 270deg
            );
            animation: electricRotate 4s linear infinite;
            z-index: 1;
        }

@keyframes electricRotate {
            100% { transform: rotate(360deg); }
        }

/* THE FOREGROUND GLASS PANEL */
        .hud-panel {
            background: var(--panel-glass);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            padding: 3.5rem 3rem;
            width: 100%;
            max-width: 720px;
            border-radius: 10px;
            position: relative;
            z-index: 2;
        }

/* Micro Vector Corner Crosshairs (+) */
        .hud-panel::before, .hud-panel::after {
            content: '+';
            position: absolute;
            font-size: 14px;
            color: var(--hud-glow);
            opacity: 0.5;
            font-weight: 300;
            transition: color 0.3s ease;
        }
        .hud-panel::before { top: 12px; left: 14px; }
        .hud-panel::after { bottom: 12px; right: 14px; }

/* Header Elements */
        .hud-header {
            margin-bottom: 3.5rem;
            position: relative;
        }

.sys-id {
            font-size: 0.75rem;
            color: var(--hud-glow);
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
            opacity: 0.8;
            transition: color 0.3s ease;
        }

.hud-header h1 {
            font-size: 1.75rem;
            font-weight: 400;
            letter-spacing: -0.5px;
            color: var(--hud-text);
            margin-bottom: 0.75rem;
        }

.hud-header p {
            font-size: 0.9rem;
            color: var(--hud-muted);
            line-height: 1.6;
            max-width: 480px;
        }

/* INPUT MATRIX */
        .matrix-container {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            margin-bottom: 3.5rem;
            position: relative;
        }

.cell-wrapper {
            position: relative;
            width: 100%;
            aspect-ratio: 1 / 1.15;
            background: rgba(255, 255, 255, 0.01);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 6px;
            transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
        }
        .matrix-cell {
            width: 100%;
            height: 100%;
            background: transparent;
            border: none;
            outline: none;
            text-align: center;
            font-size: 2.2rem;
            font-weight: 300;
            color: var(--hud-text);
            padding: 0;
            display: block;
            box-sizing: border-box;
            text-shadow: 0 0 12px rgba(255, 255, 255, 0.3);
        }

/* Input Active Focus / Glow States */
        .cell-wrapper:focus-within {
            border-color: var(--hud-glow);
            background: rgba(0, 240, 255, 0.02);
            box-shadow: 
                0 0 25px rgba(0, 240, 255, 0.15),
                inset 0 0 10px rgba(0, 240, 255, 0.05);
            transform: translateY(-4px);
        }

.cell-wrapper::after {
            content: '';
            position: absolute;
            bottom: 0; left: 10%; width: 80%;
            height: 2px;
            background: transparent;
            transition: all 0.25s ease;
        }
        .cell-wrapper:focus-within::after {
            background: var(--hud-glow);
            box-shadow: 0 0 10px var(--hud-glow);
        }

.cell-wrapper.filled {
            border-color: rgba(255, 255, 255, 0.2);
        }

/* ACTIONS FOOTER */
        .hud-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 2rem;
        }

.action-submit {
            background: transparent;
            border: 1px solid var(--hud-glow);
            color: var(--hud-glow);
            padding: 14px 36px;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            cursor: pointer;
            position: relative;
            transition: all 0.3s ease;
            border-radius: 4px;
        }

.action-submit:hover {
            background: var(--hud-glow-dim);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
            color: #fff;
            border-color: #fff;
        }

.telemetry-data {
            font-size: 0.7rem;
            color: var(--hud-muted);
            text-align: right;
            line-height: 1.6;
            letter-spacing: 1px;
        }

/* DYNAMIC STATE SWITCHES FOR ELECTRIC BORDER */
        
        /* Error State */
        .electric-wrapper.state-error::before {
            background: conic-gradient(
                transparent 0deg, 
                transparent 120deg, 
                var(--error-glow) 180deg, 
                var(--error-glow) 210deg, 
                transparent 270deg
            );
            animation-duration: 1.5s;
        }
        .electric-wrapper.state-error {
            box-shadow: 0 40px 100px rgba(0, 0, 0, 0.7), 0 0 30px rgba(255, 42, 95, 0.2);
        }
        .state-error .hud-panel::before, .state-error .hud-panel::after, .state-error .sys-id {
            color: var(--error-glow);
        }
        .state-error .matrix-cell {
            color: var(--error-glow);
            text-shadow: 0 0 10px var(--error-glow);
        }
        .state-error .action-submit {
            border-color: var(--error-glow);
            color: var(--error-glow);
        }

/* Success State */
        .electric-wrapper.state-success::before {
            background: conic-gradient(
                transparent 0deg, 
                transparent 60deg, 
                var(--success-glow) 180deg, 
                var(--success-glow) 240deg, 
                transparent 300deg
            );
            animation-duration: 8s;
        }
        .electric-wrapper.state-success {
            box-shadow: 0 40px 100px rgba(0, 0, 0, 0.7), 0 0 40px rgba(0, 255, 136, 0.2);
        }
        .state-success .hud-panel::before, .state-success .hud-panel::after, .state-success .sys-id {
            color: var(--success-glow);
        }
        .state-success .matrix-cell {
            color: var(--success-glow);
            text-shadow: 0 0 15px var(--success-glow);
        }
        .state-success .action-submit {
            border-color: var(--success-glow);
            color: var(--success-glow);
            background: rgba(0, 255, 136, 0.05);
        }

const cells = document.querySelectorAll('.matrix-cell');
        const wrappers = document.querySelectorAll('.cell-wrapper');
        const electricContainer = document.getElementById('electricContainer');
        const sysId = document.getElementById('sysId');
        const form = document.getElementById('hudForm');

cells.forEach((cell, idx) => {
            cell.addEventListener('input', (e) => {
                const value = e.target.value;
                if (!/^[0-9]$/.test(value)) { e.target.value = ''; return; }

wrappers[idx].classList.add('filled');

if (idx < cells.length - 1) {
                    cells[idx + 1].focus();
                }
            });

cell.addEventListener('keydown', (e) => {
                if (e.key === 'Backspace') {
                    electricContainer.className = 'electric-wrapper';
                    sysId.textContent = "SECURE GATEWAY // AUTH_NODE_06";
                    
                    if (!cell.value && idx > 0) {
                        cells[idx - 1].value = '';
                        wrappers[idx - 1].classList.remove('filled');
                        cells[idx - 1].focus();
                    } else {
                        cell.value = '';
                        wrappers[idx].classList.remove('filled');
                    }
                }
            });

cell.addEventListener('paste', (e) => {
                e.preventDefault();
                const pasteData = e.clipboardData.getData('text').trim();
                if (/^\d{6}$/.test(pasteData)) {
                    pasteData.split('').forEach((char, i) => {
                        cells[i].value = char;
                        wrappers[i].classList.add('filled');
                    });
                    cells[cells.length - 1].focus();
                }
            });
        });

form.addEventListener('submit', (e) => {
            e.preventDefault();
            const compiledCode = Array.from(cells).map(c => c.value).join('');

if (compiledCode === "123456") {
                electricContainer.className = 'electric-wrapper state-success';
                sysId.textContent = "ACCESS GRANTED // NODE_CLEARED";
            } else {
                electricContainer.className = 'electric-wrapper state-error';
                sysId.textContent = "SECURITY ALERT // INVALID_SIGNATURE";
            }
        });

- OTP verification UI

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