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sencho/docs/features/appearance.mdx
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Anso 8d9e6574cc feat(appearance): add Calm/Signature visual style, readability mode, and chart palette (#1407)
* feat(appearance): add Calm/Signature visual style, readability mode, and chart palette

Turn the "too intense / italic headers hurt / the security graph fights my
eyes" feedback into a token-driven Visual style with Calm as the new default
and Signature one click back to the prior look.

- Heading family routes through a `.font-heading` utility driven by
  `--font-heading`/`--heading-style`: operational headings render upright in the
  interface face under Calm and italic Instrument Serif under Signature. Base
  rule sets family + style only, so each call site keeps its own weight/tracking
  and Signature stays a true no-op; the Calm lift is a `[data-headings="clean"]`
  descendant rule. Brand lockup, empty-state heroes, and onboarding stay serif.
- Severity charts resolve through `--sev-*` tokens with Muted, Heat, and
  Signature palettes; FindingsByType routes its series through the severity ramp
  plus a neutral so no brand-cyan sits next to rose. The risk trend flattens its
  gradient under Muted/Heat/reduced and keeps the gradient under Signature.
- Appearance settings gain Visual style cards, a Security visualization palette,
  a Readability master toggle, a Motion & effects group, and a "Reset to default"
  button (restores the Calm axes, disabled while readability is on). Contrast
  moves under Readability and Ambient glow under Motion & effects. A card is
  selected only while the stored sub-axes match its preset, so a custom
  combination de-selects both.
- The topbar Theme quick-switch swaps the interface/data font pickers for a
  Visual style switch and a Readability toggle (text size kept); its footer
  Settings link jumps straight to Appearance.
- Readability is a sticky master that forces the calm resolution and a contrast
  lift at apply time without mutating the stored sub-axes.
- New users default to Calm; any pre-existing persisted appearance state keeps
  the Signature look. The pre-paint script mirrors the store.
- SegmentedControl gains a `disabled` prop and a nullable value (no active
  segment for a custom combination, with a roving-tabindex keyboard anchor).
  Adds unit/component coverage for the store, migration, chart shape logic, the
  disabled control, the reset/de-selection, and the quick-switch.

* fix(appearance): migrate Blueprint serif headings and surface readability locks

- Migrate the two operational Blueprint headings (catalog tile name, drift-policy
  option title) from font-serif italic to the .font-heading utility; the first
  pass only covered font-display, so Calm still left these italic. font-serif and
  font-display both resolve to the same display face, so this is the same fix.
- Lock the Visual style cards under Readability (parity with the topbar switch and
  the on-screen guidance to turn Readability off to choose a style by hand).
- Lock the Border brightness slider under Readability and show its forced +0.03
  readout, since Readability overrides the stored value; dragging it previously
  appeared to do nothing.
- Correct the Appearance docs sentence for the topbar quick switch (it listed
  fonts; the quick switch now carries visual style, readability, and text size).
2026-06-22 00:19:57 -04:00

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---
title: Appearance
description: Personalize Sencho's look. Choose a visual style, tune readability and the security charts, pick a theme and accent, swap the interface and data fonts, and set the text size. Every choice is saved to the current browser.
---
**Settings → Appearance** is where you make Sencho look the way you want. Choose between the Calm and Signature visual styles, dial in readability, set how the security charts are colored, pick a theme and accent, choose the interface and data fonts, and scale the text. A live preview reflects every change as you make it.
Several of these controls are also one click away from anywhere in the app: the **palette button** in the top bar, between the search and notification icons, opens a quick switcher for the theme mode, accent, visual style, readability, and text size.
<Note>
Appearance choices are saved to **this browser only**. They follow you across tabs on the same browser, and every device remembers its own look. Nothing here changes what other operators see.
</Note>
## Visual style
The **Visual style** is the master switch for how intense the interface feels:
- **Calm** (the default) keeps headings upright in the interface font, colors the security charts with a muted palette, and reduces material effects. It is the most readable setting.
- **Signature** uses italic Instrument Serif headings and the fully saturated chart palette for a more editorial look.
Picking a style sets the heading, chart, and effects controls below in one move. You are free to adjust any of them afterward to build your own combination. When **Readability mode** is on it overrides these until you turn it off.
## Readability
**Readability mode** is a single switch for the most legible result: upright headings, the muted chart palette, reduced effects, and a small contrast lift, all at once. While it is on, the heading and chart controls are locked to their calm values. Turn it off to set them by hand.
- **Header style** chooses **Clean** (the upright interface face) or **Signature** (italic Instrument Serif). Decorative moments such as the Sencho wordmark stay in the serif either way.
- **Contrast** is a master control that spreads the page tone, every border, and the text tiers together. Higher contrast darkens the page, brightens borders, and crisps up secondary text. Pairing high contrast with the OLED theme gives the sharpest reading on a true-black panel.
## Security visualization
The **Chart palette** sets the colors used on the Security page charts:
- **Muted** desaturates the severity colors so critical, high, medium, and low read as a calm progression with no jarring color pairings.
- **Heat** is a single warm ramp from a deep red through amber, with no competing hues.
- **Signature** is the saturated severity set.
## Motion & effects
- **Reduced effects** flattens card bevels, the accent glow, and chart gradients for a calmer, flatter surface.
- **Ambient glow** sets the intensity of the soft, accent-tinted glow behind the page. Slide it to zero for a completely flat background. (Reduced effects already dims it.)
## Theme
The **Mode** control sets the overall surface palette:
- **Dim** (default) is a raised charcoal. Cards and panels sit clearly above the page without going fully black.
- **OLED** is true black, ideal for power-saving panels. Borders stay visible so cards never merge into the background.
- **Light** is the bright theme, with the same directional, opaque borders inverted for a white surface.
- **Auto** follows your operating system, switching between Dim and Light as your OS does, and re-resolving live when the OS flips.
The **accent** is Sencho's one data color. It drives charts, sparklines, progress bars, focus rings, active states, the masthead and sidebar rails, and the ambient page glow, so changing it recolors the whole product cohesively. Eight well-spaced hues are available: **Cyan** (the default and the signature), **Blue**, **Violet**, **Magenta**, **Orange**, **Amber**, **Lime**, and **Steel** (a deliberate near-neutral). Status colors (green for healthy, amber for warning, rose for error) stay constant regardless of accent so state always reads the same.
**Border brightness** lifts or softens every hairline on its own, so the separation between cards reads exactly how you like it. A **Reset fine-tune** button returns contrast, border brightness, and ambient glow to their defaults.
## Typography
Sencho uses three type contexts. The interface and data faces are yours to change; the heading style follows your Visual style choice.
- **Interface font** sets the sans face used for body text, labels, navigation, and buttons. Choose **Geist** (default), **IBM Plex Sans**, or **Hanken Grotesk**.
- **Data font** sets the monospace face used for the terminal, stat values, codes, and timestamps. Choose **Geist Mono** (default), **IBM Plex Mono**, or **Fira Code**.
- **Text size** scales the entire interface from a single root multiplier. In Settings this is a continuous slider (default `1.00×`); the top-bar quick switcher offers **S / M / L / XL** presets. Both stay in sync.
## Display
The **Display** group holds the remaining per-browser preferences:
- **Density** switches between **Comfortable** (roomy rows, the default) and **Compact** (tighter rows and tiles that fit more on screen for dense dashboards).
- **Top navigation labels** shows text labels beside the top navigation icons. Turn it off for an icon-only bar; the destinations stay reachable by hover tooltip, accessible name, and the command palette. On the phone layout the navigation always keeps its labels. With labels off, **Top navigation alignment** chooses whether the icon-only bar sits to the left or centered.
Deploy-progress behavior and the diff-preview-before-save step are stack workflow preferences, so they live in **Settings → Infrastructure → Stacks**, not here.