JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Voxel Pagoda - Crisp Edition</title>
    <style>
        body {
            margin: 0;
            overflow: hidden;
            background-color: #0f172a; /* Fallback */
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        #canvas-container {
            width: 100vw;
            height: 100vh;
            display: block;
        }

        #ui-layer {
            position: absolute;
            top: 20px;
            left: 20px;
            color: rgba(255, 255, 255, 0.9);
            pointer-events: none;
            text-shadow: 0 2px 4px rgba(0,0,0,0.8);
            z-index: 10;
        }

        h1 {
            margin: 0;
            font-size: 1.8rem;
            letter-spacing: 4px;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
        }

        p {
            margin: 5px 0 0 0;
            font-size: 0.9rem;
            opacity: 0.7;
        }

        #controls {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            padding: 8px 20px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            pointer-events: auto;
            z-index: 10;
        }

        .btn {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 8px 16px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.8rem;
            font-weight: 600;
            transition: all 0.2s;
           ...