Themes and design tokens¶

Built-in themes¶

Theme	Palette	Character
`gold`	original	The reference design: deep navy, warm gold, teal highlights
`emerald`	custom	Dark design with a mint accent
`ocean`	custom	Dark design with a sky-blue accent
`violet`	custom	Dark design with a lavender accent
`ruby`	custom	Dark design with a rose accent
`paper`	paper	Light design for bright classrooms, projectors and printing

from jupyter_lecture_studio import LectureDeck

deck = LectureDeck(course="Databases", theme="paper")
deck = LectureDeck(course="AI", theme="gold", accent="#8fd3ff")   # any dark accent

Passing accent or background to gold switches it to the custom palette, where every interface accent follows your color. Code blocks stay dark in every theme so syntax colors keep their contrast.

Theme options¶

Option	Default	Meaning
`preset` / `theme`	`gold`	A registered theme name
`accent`	`None`	`#RRGGBB` accent
`background`	`None`	`#RRGGBB` background for custom palettes
`direction`	from locale	`rtl` or `ltr`
`motion`	`True`	Animations and transitions (system reduced-motion is always respected)
`max_width`	`1280`	Maximum component width, 320–2400 pixels
`notebook_style`	`False`	Also style the surrounding JupyterLab notebook; it follows the light or dark JupyterLab theme
`external_fonts`	`False`	Load Cairo and JetBrains Mono from Google Fonts instead of the bundled copies
`tokens`	`None`	Override individual design tokens

Design tokens¶

Every color, gradient and font in the stylesheet is a CSS custom property named --ls-<token>. Override any of them per deck:

from jupyter_lecture_studio import LectureDeck

deck = LectureDeck(course="Physics", theme="paper", tokens={
    "title": "#0b3954",
    "card-bg": "#ffffff",
    "font": "'IBM Plex Sans Arabic', 'Cairo', sans-serif",
})

Frequently used tokens: text, muted, title, frame-bg, frame-border, card-bg, card-border, card-title, card-text, number-bg, eyebrow, topline, code-bg, code-text, tok-keyword, tok-string, tok-number, tok-comment, tok-builtin, good, bad, note-bg. The full list is at the top of lecture_studio/assets/studio.css. Token names are validated and values cannot close the style attribute.

A theme for your institution¶

from jupyter_lecture_studio import LectureDeck, register_theme

register_theme("campus", accent="#2a9df4", background="#0d1726",
               tokens={"frame-border": "#2c4766", "number-text": "#04121f"})

deck = LectureDeck(course="Operating Systems", theme="campus")

palette="paper" starts from the light design instead of the dark one.

Direction¶

Layouts use CSS logical properties, so right-to-left and left-to-right lectures mirror automatically: description rules, card accents, cover cards and diagram notes follow the reading direction. Code, terminal output and variable tables always stay left-to-right.

Several decks on one page¶

Themes are variables on each deck’s wrapper, not separate stylesheets, so an Arabic gold deck and an English paper deck can share a notebook or a web page without interfering.