* { box-sizing: border-box; margin: 0; padding: 0; }
        body, html { width: 100%; height: 100%; overflow: hidden; font-family: monospace; }
        
        /* Theme Configurations */
        body.theme-dark { background-color: #05070f; }
        body.theme-light { background-color: #f8fafc; }
        
        /* Fullscreen Processing Container Overlay Layer */
        .bg-container { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 1; }
        canvas { display: block; width: 100%; height: 100%; }

.bg-container {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: -1;
    pointer-events: auto; 
}

canvas { display: block; width: 100%; height: 100%; }

.hero-content {
    position: relative;
    z-index: 2;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    height: 100vh; text-align: center; padding: 0 20px;
    pointer-events: none; 
}

.hero-content h1, .hero-content p, .hero-content .cta-btn {
    pointer-events: auto; 
}

.cta-btn {
    background-color: #4338ca;
    color: #ffffff;
    border: none;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.2);
}
.cta-btn:hover { background-color: #3730a3; transform: translateY(-1px); }