Separate date and name in the upcoming events table

The two columns of the table on the start page touched each other, so the entry
read "Donnerstag, 27.08., 19:00 UhrClub Discordia".

The table is created with the classes "table table-condensed", which no
stylesheet of the site defines, and the table styling that the theme applies
inside prose addresses "tbody td". The table is delivered empty and its rows
are added through the DOM, where a tr appended to a table stays a direct child
instead of being put into a tbody the way the HTML parser would. The rows are
therefore outside of any tbody and the padding of the theme never applied.

Give the column holding the date its own padding, and keep the date on one
line, it is one piece of information and reads badly broken after the weekday.

The padding alone does not fit, though. The table stands in a prose column that
the theme limits to 65 characters so that running text stays readable, and a
date and the name of an event next to each other are wider than that, so the
names would be wrapped over several lines. Lift the limit off the column and
put it back on everything in it except the table, which leaves the table room
to grow while the heading and the paragraph around it keep their width.

That much space then has to be filled sensibly. The theme lays a table out as a
block, "table { display: block; overflow: auto }", so that a wide one can be
scrolled sideways, and a block fills its parent instead of shrinking to its
content the way a table does. Spanning the page the entries would all sit at
its left edge. Ask for the width of the content with fit-content, which the
automatic margins then centre.

Addressing the table by its id keeps all of this to the start page and takes
precedence over the theme, whose prose rules are written with :where() and
carry no specificity.

Measured in a browser at 1280, 768 and 500 pixels: date and name share one line
at the first two, the table is 602 pixels wide with the same distance left and
right, and at 500 the column is narrower than the table, so the table fills it
and only the longest name wraps. The page never scrolls sideways.

Fixes: c28f04c6e8 ("switch to ics files; make calendars work; fix some minor issues")
Assisted-by: Claude:claude-opus-5
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

assets/css/upcoming.css

@@ -0,0 +1,36 @@
+/* The rows of the table are added by JavaScript and end up as direct children
+   of the table, so the table styling of the theme, which addresses tbody, does
+   not reach them. Separate the date from the name of the event ourselves, and
+   keep the date on one line, it is one piece of information and reads badly
+   broken after the weekday. */
+#upcoming td:first-child {
+  padding-inline-end: 1em;
+  white-space: nowrap;
+}
+
+/* The table stands in a prose column, which the theme limits to 65 characters
+   so that running text stays readable. A date and the name of an event next to
+   each other do not fit into that, so the names were wrapped over several
+   lines. Lift the limit off the column and put it back on everything in it
+   except the table, which leaves the table room to grow while the text around
+   it keeps its width. */
+section.prose:has(> #upcoming) {
+  max-width: none;
+}
+
+section.prose:has(> #upcoming) > :not(#upcoming) {
+  max-width: 65ch;
+  margin-inline: auto;
+}
+
+/* The theme lays a table out as a block, "table { display: block; overflow:
+   auto }", so that a wide one can be scrolled sideways. A block fills its
+   parent instead of shrinking to its content the way a table does, so across
+   the whole width of the page the entries would stay at its left edge.
+   fit-content asks for the width of the content, which the automatic margins
+   then centre, and it never exceeds the column, so a display too narrow for
+   the table still wraps the names instead of overflowing. */
+#upcoming {
+  width: fit-content;
+  margin-inline: auto;
+}

layouts/shortcodes/upcoming.html

@@ -1,3 +1,5 @@
+{{- $css := resources.Get "css/upcoming.css" | minify | fingerprint -}}
 {{- $js := resources.Get "js/upcoming.js" | js.Build (dict "minify" true "format" "esm" "target" "es2020") | fingerprint -}}
+<link rel="stylesheet" href="{{ $css.RelPermalink }}" integrity="{{ $css.Data.Integrity }}">
 <table id="upcoming" class="table table-condensed"></table>
 <script type="module" src="{{ $js.RelPermalink }}" integrity="{{ $js.Data.Integrity }}"></script>