# What Visual Effects Are Used in the FckSignups UI: A Brutalist CSS Deep Dive

> Discover the CSS keyframe animations and pseudo-element overlays like glitch text and CRT scanlines that power the FckSignups UI's brutalist aesthetic. No external libraries needed!

- Repository: [Abdullah/FckSignups](https://github.com/BraveOPotato/FckSignups)
- Tags: deep-dive
- Published: 2026-09-08

---

**The FckSignups interface relies entirely on CSS keyframe animations and pseudo-element overlays—including TV noise, CRT scanlines, glitch text, and rotating conic gradients—to deliver its raw, anti-design aesthetic without external animation libraries.**

The **BraveOPotato/FckSignups** repository implements a distinctive visual language that rejects polished corporate design in favor of brutalist web aesthetics. Every animation, from subtle page grain to aggressive text glitches, is defined in modular CSS files using native `@keyframes` and pseudo-elements, ensuring the UI remains lightweight while maintaining high visual impact.

## Atmospheric Overlays: Noise and Scanlines

The foundation of the FckSignups aesthetic is a CRT-monitor simulation created by two global overlays in **[src/styles/index.css]**.

A **noise overlay** adds analog texture through a `body::before` pseudo-element that applies an SVG turbidity filter, generating a subtle static grain across the entire viewport. This is paired with **scanlines** implemented via `body::after`, which uses a repeating linear gradient to render horizontal dark lines mimicking old television displays.

```css
/* Implementation reference from src/styles/index.css */
body::before {
  /* SVG turbidity filter for noise texture */
  content: "";
  position: fixed;
  /* ... noise implementation ... */
}

body::after {
  /* Repeating linear gradient for scanlines */
  content: "";
  position: fixed;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.15),
    rgba(0, 0, 0, 0.15) 1px,
    transparent 1px,
    transparent 2px
  );
}

```

## Modal Transitions: Fade-In and Slide-In

The "Submit Tool" modal uses a two-part entrance sequence defined by separate keyframes in **[src/styles/index.css]**. The backdrop triggers `@keyframes modal-fade-in` to smoothly transition background opacity, while the panel itself executes `@keyframes modal-slide-in` to translate upward from `12px`.

```tsx
/* React component implementation */
<div className="modal-overlay">
  <div className="modal-panel">
    {/* modal content triggers modal-slide-in */}
  </div>
</div>

```

The overlay element handles the fade effect, while `modal-panel` manages the vertical translation, creating a layered depth cue without JavaScript animation libraries.

## Glitch Typography Effects

The brand title in **[src/components/Home/Header/Header.module.css]** implements a **glitch text** effect using duplicate layers that shift rapidly on hover. The `.glitch` class relies on two complementary keyframes—`glitch-1` and `glitch-2`—that animate pseudo-elements (`::before` and `::after`) with differing color offsets and translation values.

```html
<span className="glitch" data-text="FCK">FCK</span>

```

When the user hovers, these pseudo-elements cycle through clipped displacement patterns, producing the characteristic digital distortion associated with raw, anti-design aesthetics.

## Interactive Component Animations

Several UI elements employ **micro-interactions** to provide tactile feedback:

- **Shake Animation**: Tool cards in **[src/components/Home/Tools/ToolCard/ToolCard.module.css]** use `@keyframes shakeAnimation` to apply subtle horizontal oscillation on hover, implemented as a short linear animation that alternates direction.

- **Dots Loading Indicator**: The tools grid in **[src/components/Home/Tools/Tools.module.css]** displays an animated ellipsis cycling through ".", "..", "…" using the `@keyframes dots` animation applied to a `::after` pseudo-element on the loading container.

- **Idle Floating**: The Report widget in **[src/components/Home/ReportFloatingWidget/ReportFloatingWidget.module.css]** draws attention through gentle vertical bobbing via `@keyframes idle-float`, creating ambient motion without requiring user interaction.

## Button Effects: Rotating Glow and Hover Shadows

The **Show More** button in **[src/components/Shared/Buttons/ShowMoreButton/ShowMoreButton.module.css]** features a continuously **rotating conic-gradient glow** achieved through `animation: rotateGlow 5s linear infinite` applied to a `::before` pseudo-element. This creates a spinner-like halo effect behind the button text.

Additionally, **tactile depth cues** are implemented globaly in **[src/styles/index.css]** through button hover states. Elements like `.submit-tool-button` transition shadow colors on hover, shifting from neutral depths to high-contrast colored glows that signal interactivity.

```css
/* From src/components/Shared/Buttons/ShowMoreButton/ShowMoreButton.module.css */
.showMoreBtn::before {
  content: "";
  position: absolute;
  animation: rotateGlow 5s linear infinite;
  /* Conic-gradient background */
}

```

## Summary

- **FckSignups** achieves its brutalist aesthetic through **ten distinct CSS effects** defined across six specialized stylesheet modules.
- **Atmospheric effects** (noise and scanlines) are implemented via `body::before` and `body::after` pseudo-elements in the global stylesheet, requiring no JavaScript.
- **Modal transitions** separate fade and slide animations into discrete keyframes for performance-optimal compositing.
- **Glitch text** uses duplicate pseudo-element layers with clipped animations rather than text shadows or filters.
- **Micro-interactions** (shake, float, dots) are scoped to individual component CSS modules, keeping animation logic co-located with component structure.
- **Button glows** leverage conic gradients and infinite rotation keyframes to create motion without external libraries like Framer Motion or GSAP.

## Frequently Asked Questions

### How does the TV noise effect work without impacting performance?

FckSignups implements the noise texture through a fixed-position `body::before` pseudo-element using an SVG turbidity filter defined in **[src/styles/index.css]**. Because the element uses `position: fixed` and contains no repainting content (only a static filter), the browser composites it as a single layer, minimizing reflow costs while maintaining the analog texture across the entire viewport.

### What CSS technique creates the glitch text distortion on hover?

The glitch effect relies on the **`.glitch`** class in **[src/components/Home/Header/Header.module.css]**, which generates two pseudo-elements (`::before` and `::after`) that duplicate the text content via the `data-text` attribute. When hovered, these layers execute `@keyframes glitch-1` and `@keyframes glitch-2` simultaneously, applying differing `clip-path` offsets and `transform: translate` values to create flickering color separation without JavaScript event listeners.

### Are the FckSignups animations dependent on JavaScript?

No. According to the source code analysis, **all visual effects are purely CSS-driven**. The repository uses standard `@keyframes` declarations, `animation` properties, and pseudo-element techniques across files like **[src/styles/index.css]** and component-scoped `*.module.css` files. This approach eliminates runtime animation libraries, reducing bundle size while leveraging the browser's optimized rendering pipeline for transforms and opacity changes.

### How is the rotating glow around the Show More button implemented?

The glow originates from a conic-gradient background applied to the `::before` pseudo-element of `.showMoreBtn` in **[src/components/Shared/Buttons/ShowMoreButton/ShowMoreButton.module.css]**. The `@keyframes rotateGlow` animation rotates this gradient continuously over 5 seconds using `linear` timing and `infinite` iteration, creating a spinner-like halo effect behind the button content while the foreground text remains static.