Replace CSS grid with Bootstrap table on conference list page

- Proper <table> with colgroup widths, table-sm table-hover align-middle
- Month-divider rows (MARCH 2026, APRIL 2026, …) break up long lists
- Date ranges collapsed to a single column (e.g. "25–28 Mar 2026")
- Row highlight (conf-going) for conferences marked going=true
- Topic and date columns styled text-muted small to reduce visual noise
- Trip links replaced with 🧳 emoji: shows just the emoji when the trip
  title matches the conference name (the common case), otherwise appends
  the trip title (e.g. "🧳 Budapest" for FOSDEM); full title always in
  tooltip

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/conference_list.html

@@ -1,22 +1,11 @@
 {% extends "base.html" %}
 
-{% from "macros.html" import trip_link, conference_row with context %}
+{% from "macros.html" import trip_link with context %}
 
 {% block title %}Conferences - Edward Betts{% endblock %}
 
 {% block style %}
-{% set column_count = 9 %}
 <style>
-.grid-container {
-  display: grid;
-  grid-template-columns: repeat({{ column_count }}, auto);
-  gap: 10px;
-  justify-content: start;
-}
-.heading {
-    grid-column: 1 / {{ column_count + 1 }};
-}
-
 /* Timeline */
 .conf-timeline {
   position: relative;
@@ -67,6 +56,22 @@
   color: white;
   text-decoration: none;
 }
+
+/* Conference table */
+.conf-month-row td {
+  background: #e9ecef !important;
+  font-weight: 600;
+  font-size: 0.8em;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: #495057;
+  padding-top: 0.5rem;
+  padding-bottom: 0.3rem;
+  border-bottom: none;
+}
+.conf-going {
+  --bs-table-bg: rgba(25, 135, 84, 0.07);
+}
 </style>
 {% endblock %}
 
@@ -74,7 +79,6 @@
 
 {% macro render_timeline(timeline) %}
 {% if timeline %}
-{% set bar_h = 26 %}
 {% set row_h = 32 %}
 {% set header_h = 22 %}
 {% set total_h = timeline.lane_count * row_h + header_h %}
@@ -82,28 +86,22 @@
   <h3>Next 90 days</h3>
   <div class="conf-timeline" style="height: {{ total_h }}px;">
 
-    {# Month markers #}
     {% for m in timeline.months %}
       <div class="conf-tl-month" style="left: {{ m.left_pct }}%;">
         <span class="conf-tl-month-label">{{ m.label }}</span>
       </div>
     {% endfor %}
 
-    {# Today marker (always at left: 0) #}
     <div class="conf-tl-today" style="left: 0;"></div>
 
-    {# Conference bars #}
     {% for conf in timeline.confs %}
       {% set color = tl_colors[conf.lane % tl_colors | length] %}
       {% set top_px = conf.lane * row_h + header_h %}
       <div class="conf-tl-bar"
            style="left: {{ conf.left_pct }}%; width: {{ conf.width_pct }}%; top: {{ top_px }}px; background: {{ color }};"
            title="{{ conf.label }}">
-        {% if conf.url %}
+        {% if conf.url %}<a href="{{ conf.url }}">{{ conf.name }}</a>
-          <a href="{{ conf.url }}">{{ conf.name }}</a>
+        {% else %}<span>{{ conf.name }}</span>{% endif %}
-        {% else %}
-          <span>{{ conf.name }}</span>
-        {% endif %}
       </div>
     {% endfor %}
 
@@ -112,25 +110,95 @@
 {% endif %}
 {% endmacro %}
 
-{% macro section(heading, item_list, badge) %}
+{% macro conf_table(heading, item_list, badge) %}
-  {% if item_list %}
+{% if item_list %}
-    <div class="heading">
+{% set count = item_list | length %}
-
+<h2>{{ heading }} <small class="text-muted fs-6 fw-normal">{{ count }} conference{{ "" if count == 1 else "s" }}</small></h2>
-      <h2>{{ heading }}</h2>
+<table class="table table-sm table-hover align-middle mb-4">
-
+  <colgroup>
-      <p>
+    <col style="width: 9rem">
-        {% set item_count = item_list|length %}
+    <col>
-        {% if item_count == 1 %}{{ item_count }} conference{% else %}{{ item_count }} conferences{% endif %}
+    <col style="width: 18rem">
-      </p>
+    <col style="width: 14rem">
-    </div>
+    <col style="width: 7rem">
-
+    <col style="width: 10rem">
+  </colgroup>
+  <thead class="table-light">
+    <tr>
+      <th>Dates</th>
+      <th>Conference</th>
+      <th>Topic</th>
+      <th>Location</th>
+      <th>CFP ends</th>
+      <th>Price</th>
+    </tr>
+  </thead>
+  <tbody>
+    {% set ns = namespace(prev_month="") %}
     {% for item in item_list %}
-      {{ conference_row(item, badge) }}
+      {% set month_label = item.start_date.strftime("%B %Y") %}
-      <div class="grid-item">
+      {% if month_label != ns.prev_month %}
-        {% if item.linked_trip %} trip: {{ trip_link(item.linked_trip) }} {% endif %}
+        {% set ns.prev_month = month_label %}
-      </div>
+        <tr class="conf-month-row">
-    {% endfor %}
+          <td colspan="6">{{ month_label }}</td>
+        </tr>
       {% endif %}
+      <tr{% if item.going %} class="conf-going"{% endif %}>
+        <td class="text-nowrap text-muted small">
+          {%- if item.start_date == item.end_date -%}
+            {{ item.start_date.strftime("%-d %b %Y") }}
+          {%- elif item.start_date.year == item.end_date.year and item.start_date.month == item.end_date.month -%}
+            {{ item.start_date.strftime("%-d") }}–{{ item.end_date.strftime("%-d %b %Y") }}
+          {%- else -%}
+            {{ item.start_date.strftime("%-d %b") }}–{{ item.end_date.strftime("%-d %b %Y") }}
+          {%- endif -%}
+        </td>
+        <td>
+          {% if item.url %}<a href="{{ item.url }}">{{ item.name }}</a>
+          {% else %}{{ item.name }}{% endif %}
+          {% if item.going and not (item.accommodation_booked or item.travel_booked) %}
+            <span class="badge text-bg-primary ms-1">{{ badge }}</span>
+          {% endif %}
+          {% if item.accommodation_booked %}
+            <span class="badge text-bg-success ms-1">accommodation</span>
+          {% endif %}
+          {% if item.transport_booked %}
+            <span class="badge text-bg-success ms-1">transport</span>
+          {% endif %}
+          {% if item.linked_trip %}
+            {% set trip = item.linked_trip %}
+            <a href="{{ url_for('trip_page', start=trip.start.isoformat()) }}"
+               class="text-muted ms-1 text-decoration-none"
+               title="Trip: {{ trip.title }}">
+              🧳{% if trip.title != item.name %} {{ trip.title }}{% endif %}
+            </a>
+          {% endif %}
+        </td>
+        <td class="text-muted small">{{ item.topic }}</td>
+        <td class="text-nowrap">
+          {% set country = get_country(item.country) if item.country else None %}
+          {% if country %}{{ country.flag }} {{ item.location }}
+          {% elif item.online %}💻 Online
+          {% else %}{{ item.location }}{% endif %}
+        </td>
+        <td class="text-nowrap text-muted small">
+          {% if item.cfp_end %}{{ item.cfp_end.strftime("%-d %b %Y") }}{% endif %}
+        </td>
+        <td>
+          {% if item.price and item.currency %}
+            <span class="badge bg-info text-nowrap">{{ "{:,d}".format(item.price | int) }} {{ item.currency }}</span>
+            {% if item.currency != "GBP" and item.currency in fx_rate %}
+              <span class="badge bg-info text-nowrap">{{ "{:,.0f}".format(item.price / fx_rate[item.currency]) }} GBP</span>
+            {% endif %}
+          {% elif item.free %}
+            <span class="badge bg-success text-nowrap">free</span>
+          {% endif %}
+        </td>
+      </tr>
+    {% endfor %}
+  </tbody>
+</table>
+{% endif %}
 {% endmacro %}
 
 {% block content %}
@@ -140,11 +208,9 @@
 
   {{ render_timeline(timeline) }}
 
-  <div class="grid-container">
+  {{ conf_table("Current", current, "attending") }}
-    {{ section("Current", current, "attending") }}
+  {{ conf_table("Future", future, "going") }}
-    {{ section("Future", future, "going") }}
+  {{ conf_table("Past", past|reverse|list, "went") }}
-    {{ section("Past", past|reverse|list, "went") }}
-  </div>
 </div>
 
 {% endblock %}