Dark Mode Hero

<!DOCTYPE html>
<title>My Example</title>

<style>
    :root {
        --dmh-padding: 5rem 1.5rem;
        --dmh-min-height: 480px;
        --dmh-bg-start: #111827;
        --dmh-bg-end: #1f2937;
        --dmh-text-color: #d1d5db;
        --dmh-headline-color: #f9fafb;
        --dmh-cta-bg: #4f46e5;
        --dmh-cta-hover-bg: #4338ca;
        --dmh-cta-text-color: #ffffff;
        --dmh-cta-glow-color: rgba(79, 70, 229, 0.4);
        --dmh-max-width: 850px;
    }

.dark-mode-hero {
        box-sizing: border-box;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
        width: 100%;
        min-height: var(--dmh-min-height);
        padding: var(--dmh-padding);

background-color: var(--dmh-bg-start);
        background-image: radial-gradient(ellipse at top, var(--dmh-bg-end), var(--dmh-bg-start));

display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
    }
    .dark-mode-hero * {
         box-sizing: border-box;
    }
    .dark-mode-hero-content {
        max-width: var(--dmh-max-width);
    }
    .dark-mode-hero-title {
        color: var(--dmh-headline-color);
        margin: 0 0 1rem 0;
        font-size: clamp(2.5rem, 6vw, 4rem);
        font-weight: 800;
        line-height: 1.2;
        text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    }
    .dark-mode-hero-subtitle {
        color: var(--dmh-text-color);
        margin: 0 auto 2.5rem auto;
        font-size: clamp(1.1rem, 3vw, 1.25rem);
        line-height: 1.6;
        max-width: 650px;
    }
    .dark-mode-hero-cta {
        display: inline-block;
        background-color: var(--dmh-cta-bg);
        color: var(--dmh-cta-text-color);
        padding: 1rem 2.5rem;
        border-radius: 8px;
        border: none;
        font-size: 1.1rem;
        font-weight: 600;
        text-decoration: none;
        cursor: pointer;
        transition: background-color 0.3s ease, box-shadow 0.3s ease;
        box-shadow: 0 0 15px 0 var(--dmh-cta-glow-color), 
                    0 0 5px 0 var(--dmh-cta-glow-color);
    }
    .dark-mode-hero-cta:hover {
        background-color: var(--dmh-cta-hover-bg);
        box-shadow: 0 0 25px 5px var(--dmh-cta-glow-color), 
                    0 0 10px 0 var(--dmh-cta-glow-color);
    }
</style>

<section class="dark-mode-hero">
    <div class="dark-mode-hero-content">
        <h1 class="dark-mode-hero-title">Deploy in the Dark</h1>
        <p class="dark-mode-hero-subtitle">
            Next-generation infrastructure for developers who build at night. Our platform provides the tools you need to ship code faster, with unbeatable performance and reliability.
        </p>
        <a href="#" role="button" class="dark-mode-hero-cta">Start Building</a>
    </div>
</section>