Lifts ideas from the ``datatools_layout_redesign.html`` mockup
(artistic licence, not literal). Two changes:
1. ``.streamlit/config.toml`` ``[theme]`` block — cream paper bg
(#fafaf7), warm sidebar (#f5f4ef), stone ink (#1c1917), burnt
orange primary (#c2410c). Streamlit threads these through its
chrome (focus rings, file-uploader accents, link colors).
2. ``_DESIGN_TOKENS_CSS`` injected by ``hide_streamlit_chrome`` on
every page. Imports Fraunces (display serif), Geist (body sans),
Geist Mono. Restyles, scoped through ``--dt-*`` custom properties:
- Page surface + sidebar — warm cream backgrounds, soft warm
borders, no harsh white.
- Sidebar nav — section labels in tiny uppercase tracking, nav
items with soft hover, active item as a white pill with subtle
shadow.
- Typography — H1/H2/H3 in Fraunces with tightened tracking;
body Geist; inline code Geist Mono with orange-on-cream chip.
- Buttons — primary = dark ink (``#1c1917``) with white text;
secondary = paper surface with warm border; disabled = muted
cream.
- Containers / expanders — editorial cards: 14px radius, 1px
warm border, faint shadow, warm-cream summary headers.
- File uploader — cream dropzone with dashed border + per-file
paper chips.
- Alerts — soft tinted fills (info=sky, success=mint, warn=amber,
error=rose) over the kind-specific palette.
- Inputs, tabs, dataframes — paper surfaces with rounded warm
borders.
Verified at 1920x1050 + 1400x900 on home page (empty + with file
uploaded + with findings rendered) and Clean Text tool page; no
regressions in the white-bar fix from 65b663b.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Michael
b0ee65e922