fix(showcase): tighten docs spacing and sidebar padding

[wintermuted]

Summary

• tighten layout spacing across showcase documentation pages
• reduce sidebar padding to make navigation denser and easier to scan
• apply consistent spacing updates across docs html pages and shared showcase styles

Scope

• updated showcase/showcase.css
• updated showcase docs pages to align with the new spacing

Notes

This PR is created from the local staged changes that were present in the theme repository working tree.

[github-actions]

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Run 26578500293 — commit 30ce2ab

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Bump every showcase CSS URL

This shared showcase.css change relies on cache-busting, but only some HTML files were moved to ?v=5; layout-utilities.html, slider.html, toggle.html, toggle-group.html, and toast.html still request ./showcase.css?v=3 (verified with rg "showcase\.css\?v=" showcase). Visitors with the old v=3 stylesheet cached will keep seeing the previous sidebar/layout spacing on those pages while the rest of the docs use the new CSS, so the showcase becomes inconsistent after deploy.

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[Copilot]

Pull request overview

This PR tightens spacing in the showcase documentation layout (top bar + docs shell + sidebar nav) and updates most showcase HTML pages to reference a new showcase.css cache-busting version so the refreshed spacing is picked up in browsers.

Changes:

• Reduced horizontal padding in the docs top bar and main docs shell.
• Significantly reduced docs sidebar padding and adjusted sidebar nav-link padding.
• Bumped showcase.css querystring version across many showcase HTML pages (?v=4 → ?v=5).

Reviewed changes

Copilot reviewed 28 out of 28 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
showcase/showcase.css	Tightens layout padding for topbar/shell/sidebar and densifies sidebar nav-link spacing.
showcase/buttons.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/cards.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/charts.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/code-block.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/components.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/data-display.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/feedback.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/forms.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/gallery.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/icons.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/index.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/installation.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-app-shell.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-content-grid.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-entry-header.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-example-app-shell.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-example-sidebar.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-example-topnav.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-sidebar.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout-topnav.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/layout.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/mermaid.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/modal.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/navigation.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/tables.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/tags.html	Bumps showcase.css cache-busting version to ?v=5.
showcase/typography.html	Bumps showcase.css cache-busting version to ?v=5.