mindloop-landing

name	mindloop-landing
description	Use this plugin when the user wants a dark, pure-monochrome newsletter / content-platform landing page (Mindloop): fullscreen video hero, Instrument-Serif italic accent words, liquid-glass controls, scroll-driven word-by-word mission reveal, and an HLS-video CTA. Invoke for 'Mindloop landing', 'black monochrome newsletter landing page', 'video hero content platform', or when the user references the Mindloop template.
version	0.1.0
od	{"mode":"prototype","surface":"web","scenario":"design","preview":{"type":"html","entry":"example.html"},"design_system":{"requires":false}}

Mindloop — Dark Monochrome Content-Platform Landing

Produce a premium, pure-black monochrome landing page for Mindloop, a newsletter / content platform. A complete, rendered reference implementation ships beside this skill at example.html — start from it. Copy example.html, then adjust copy and data; do not rewrite the CSS or invent a new visual language. The seed already encodes the exact HSL tokens, liquid-glass treatment, fonts, section layout, fadeUp reveal, scroll-driven mission reveal, and the HLS CTA.

This is the authoritative build brief. Follow it exactly — the HSL variables, fonts, video URLs, and animation patterns are locked.

Monochrome is hard-locked. Background is pure black #000 (0 0% 0%), foreground pure white. There are no colors or gradients beyond monochrome — the only non-grey token is --accent: 170 15% 45% (a muted teal-grey) and it is essentially unused in the visible UI. Do not introduce brand colors, blues, purples, or vivid gradients.

Assets (critical): example.html already ships the 3 hero avatars and the 3 platform icons (ChatGPT / Perplexity / Google AI) as inlined data:image/svg+xml;base64,… URIs. Keep them exactly as they are. Do not swap them for i.pravatar.cc, api.dicebear.com, dicebear, or any other remote avatar / icon host — external hosts rate-limit or 403 inside the preview sandbox and render broken. Only replace an asset if the user supplies a real image, and prefer a data URI over a remote URL. The four large background videos stay on their stable cloudfront.net / stream.mux.com CDNs.

Stack

• Default output: a single self-contained HTML file (the example.html seed). It already includes everything inline.
• If the user explicitly asks for the full project, port the seed faithfully to React + Vite + TypeScript + Tailwind CSS + shadcn/ui + Framer Motion. Same tokens, same markup structure. Install hls.js and framer-motion. Fonts via @fontsource/inter (400, 500, 600, 700) and @fontsource/instrument-serif (400, 400-italic). lucide-react for icons. tailwindcss-animate plugin. Do not change the design while porting.
• Motion loading (locked). If you emit a single self-contained inline-JSX file instead of the Vite project, Motion's React hooks (useScroll, useTransform, useAnimationFrame, …) exist only in the React UMD build: load <script src="https://unpkg.com/framer-motion@11.11.13/dist/framer-motion.js"></script> and read them off window.Motion — never the vanilla https://unpkg.com/motion@.../dist/motion.js DOM bundle, which lacks useScroll and renders a blank page. (The Vite project imports from npm and is unaffected.)

Fonts

• Inter (sans) — body and UI, weights 400/500/600/700.
• Instrument Serif (serif, italic) — used ONLY for the italic accent word inside headings (.serif: font-style: italic; font-weight: 400). Loaded from Google Fonts in the seed; @fontsource/instrument-serif in the React port.

Design System — locked HSL tokens (:root, values only, no hsl() wrapper)

--background: 0 0% 0%
--foreground: 0 0% 100%
--card: 0 0% 5%
--card-foreground: 0 0% 100%
--primary: 0 0% 100%
--primary-foreground: 0 0% 0%
--secondary: 0 0% 12%
--secondary-foreground: 0 0% 85%
--muted: 0 0% 15%
--muted-foreground: 0 0% 65%
--accent: 170 15% 45%
--accent-foreground: 0 0% 100%
--border: 0 0% 20%
--input: 0 0% 18%
--ring: 0 0% 40%
--hero-subtitle: 210 17% 95%

Consume tokens via hsl(var(--token)) / hsl(var(--token) / 0.3).

Liquid Glass (.liquid-glass) — locked

.liquid-glass {
  background: rgba(255, 255, 255, 0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: none;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}
.liquid-glass::before {
  content: '';
  position: absolute; inset: 0; border-radius: inherit; padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.45) 0%, rgba(255,255,255,0.15) 20%,
    rgba(255,255,255,0) 40%, rgba(255,255,255,0) 60%,
    rgba(255,255,255,0.15) 80%, rgba(255,255,255,0.45) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

Used on: the 3 navbar social buttons (circular w-10 h-10), the hero email-form container (rounded-full), and the "Start Writing" CTA button (rounded-lg).

Animation pattern — fadeUp (Framer-Motion whileInView)

Reusable staggered reveal. In React:

const fadeUp = (delay: number) => ({
  initial: { opacity: 0, y: 20 },
  whileInView: { opacity: 1, y: 0 },
  viewport: { once: true, margin: "-100px" },
  transition: { duration: 0.6, delay, ease: "easeOut" },
});

In the seed this is mapped down to an IntersectionObserver (threshold ~0.08, rootMargin: -100px) that adds a .in class; siblings within a parent get a staggered transition-delay (~0.08s steps). Keep once: true semantics (unobserve after reveal).

Page structure (top to bottom)

Navbar — fixed, transparent, top-0 z-50, padding px-8 md:px-28 py-4

• Left: concentric-circles logo (outer w-7 h-7 border-2 border-foreground/60, inner w-3 h-3 border border-foreground/60) + bold "Mindloop".
• Center-left: nav links ["Home", "How It Works", "Philosophy", "Use Cases"] separated by • dots; links text-muted-foreground hover:text-foreground. Hidden on mobile.
• Right: 3 social icons (Instagram, LinkedIn, Twitter — lucide-react in the port, inline SVG in the seed) in liquid-glass circular w-10 h-10 rounded-full buttons.

Hero — full viewport height

• Background: autoplay/loop/muted/playsInline MP4 covering the section, object-cover.
  • URL: https://plugin-assets.open-design.ai/plugins/mindloop-landing/hf_20260325_120549_0cd82c36-56b3-4dd9-b190-069cfc3a623f-9b476a.mp4
• Bottom gradient: h-64 (256px) bg-gradient-to-t from-background to-transparent for a smooth fade to black.
• Content (centered, z-10, pt-28 md:pt-32):
  • Avatar row: 3 overlapping circular avatars (-space-x-2, w-8 h-8 rounded-full border-2 border-background, inlined data URIs) + "7,000+ people already subscribed" (text-muted-foreground text-sm).
  • Heading: text-5xl md:text-7xl lg:text-8xl font-medium tracking-[-2px] — "Get Inspired with Us", where "Inspired" is .serif (Instrument Serif italic, font-normal).
  • Subtitle: text-lg, color hsl(var(--hero-subtitle)) — "Join our feed for meaningful updates, news around technology and a shared journey toward depth and direction."
  • Email form: liquid-glass rounded-full p-2 max-w-lg containing an email input and a bg-foreground text-background rounded-full px-8 py-3 "SUBSCRIBE" button (whileHover scale 1.03, whileTap scale 0.98).

"Search has changed" section — pt-52 md:pt-64 pb-6 md:pb-9, centered

• Heading: text-5xl md:text-7xl lg:text-8xl — "Search has changed. Have you?" with "changed." in serif italic.
• Subtitle: text-muted-foreground text-lg max-w-2xl mx-auto mb-24.
• 3 platform cards (grid md:grid-cols-3 gap-12 md:gap-8 mb-20): each = a ~200×200 icon image centered, platform name (font-semibold text-base), description (text-muted-foreground text-sm).
  • ChatGPT → inlined icon-chatgpt data URI. Perplexity → inlined icon-perplexity data URI. Google AI → inlined icon-google data URI.
• Bottom tagline: "If you don't answer the questions, someone else will." (text-muted-foreground text-sm text-center).

Mission section — pt-0 pb-32 md:pb-44, centered

• Large ~800×800 looping autoplay muted video, centered.
  • URL: https://plugin-assets.open-design.ai/plugins/mindloop-landing/hf_20260325_132944_a0d124bb-eaa1-4082-aa30-2310efb42b4b-d0e30d.mp4
• Scroll-driven word-by-word reveal (useScroll + useTransform in the port; in the seed a passive scroll listener that maps each word's viewport position to opacity 0.15 → 1).
  • Paragraph 1 (text-2xl md:text-4xl lg:text-5xl font-medium tracking-[-1px]): "We're building a space where curiosity meets clarity — where readers find depth, writers find reach, and every newsletter becomes a conversation worth having." Words "curiosity", "meets", "clarity" snap to --foreground; the rest sit in --hero-subtitle.
  • Paragraph 2 (text-xl md:text-2xl lg:text-3xl font-medium mt-10): "A platform where content, community, and insight flow together — with less noise, less friction, and more meaning for everyone involved."

Solution section — py-32 md:py-44, border-t border-border/30

• Label: "SOLUTION" (text-xs tracking-[3px] uppercase text-muted-foreground).
• Heading: text-4xl md:text-6xl — "The platform for meaningful content" (serif italic on "meaningful").
• Video: rounded-2xl aspect-[3/1] object-cover.
  • URL: https://plugin-assets.open-design.ai/plugins/mindloop-landing/hf_20260325_125119_8e5ae31c-0021-4396-bc08-f7aebeb877a2-1f0a78.mp4
• 4-column feature grid (md:grid-cols-4 gap-8): Curated Feed, Writer Tools, Community, Distribution — each title (font-semibold text-base) + description (text-muted-foreground text-sm).

CTA section — py-32 md:py-44, border-t border-border/30, overflow-hidden

• Background video via HLS (hls.js): absolute inset-0 object-cover z-0.
  • HLS URL: https://stream.mux.com/8wrHPCX2dC3msyYU9ObwqNdm00u3ViXvOSHUMRYSEe5Q.m3u8
  • Use Hls.isSupported(); fall back to native HLS (canPlayType('application/vnd.apple.mpegurl')) for Safari.
• Overlay: absolute inset-0 bg-background/45 z-[1].
• Content (z-10, centered): concentric-circles logo (w-10 h-10 outer, w-5 h-5 inner); heading "Start Your Journey" (serif italic on "Journey"); subtitle text-muted-foreground; two buttons — "Subscribe Now" (bg-foreground text-background rounded-lg px-8 py-3.5) and "Start Writing" (liquid-glass rounded-lg).

Footer — py-12 px-8 md:px-28

• Left: "© 2026 Mindloop. All rights reserved." (text-muted-foreground text-sm).
• Right: Privacy, Terms, Contact (text-muted-foreground text-sm hover:text-foreground).

Responsive

• Headings use clamped / md:/lg: breakpoints exactly as listed; mobile drops the navbar center links.
• platform-grid and feature-grid collapse to a single (or 2) column under md.
• Mission video and hero video are object-cover and never letterbox.

Color rules — hard

Pure black/white monochrome only. The ONLY tokens in play are the greyscale ramp plus --hero-subtitle (a near-white 210 17% 95%) for hero/mission body text. No accent colors in the visible UI — no blue, purple, teal swatches, no vivid gradients. The single gradient allowed is the hero's black-to-transparent bottom fade and the liquid-glass border highlight. Keep it monochrome.