Attempt a shortcode for the schedule overview

assets/css/_custom.css

@@ -1,3 +1,5 @@
+@import './_schedule.css';
+
 .header__intro_headline {
   font: bold var(--fs-xxl) "Arial";
   padding-bottom: 10px;

assets/css/_schedule.css

@@ -0,0 +1,239 @@
+/* Tour schedule shortcode: one column of cards per day, a day picker on narrow screens. */
+
+.schedule {
+  --schedule-line: color-mix(in oklch, var(--color-text) 20%, transparent);
+  --schedule-card-bg: color-mix(in oklch, var(--color-text) 4%, transparent);
+  --schedule-accent: var(--color-link);
+
+  container-type: inline-size;
+  margin-block: var(--spacing-l);
+}
+
+.schedule__days {
+  display: grid;
+  gap: var(--spacing-l);
+}
+
+/* Hour lines are only drawn in the aligned grid below. */
+.schedule__hour {
+  display: none;
+}
+
+/* One column per day; the shortcode puts each card in the row of its start time
+   (--schedule-row), and the subgrids line those rows up across the days. */
+@container (width >= 48rem) {
+  .schedule__days {
+    grid-template-columns: repeat(var(--schedule-days), minmax(0, 1fr));
+    grid-template-rows: auto repeat(var(--schedule-rows), auto);
+    gap: 0.5rem 1rem;
+  }
+
+  /* Placed explicitly: auto-placement would move the days out of the way of the hour lines. */
+  .schedule__day {
+    display: grid;
+    grid-column: var(--schedule-column);
+    grid-row: 1 / -1;
+    grid-template-rows: subgrid;
+  }
+
+  .schedule__list {
+    grid-row: 2 / -1;
+    grid-template-rows: subgrid;
+  }
+
+  .schedule__card {
+    grid-row: var(--schedule-row);
+  }
+
+  /* Titles always take two lines, so all cards in the grid are the same size; longer
+     titles get an ellipsis. */
+  .schedule__title {
+    display: -webkit-box;
+    -webkit-box-orient: vertical;
+    -webkit-line-clamp: 2;
+    line-clamp: 2;
+    overflow: hidden;
+    min-height: calc(2 * 1.3em);
+  }
+
+  /* Line above each hour, drawn in the middle of the row gap. Spans all days, so it must
+     not catch clicks meant for the cards. */
+  .schedule__hour {
+    display: block;
+    grid-column: 1 / -1;
+    grid-row: var(--schedule-row);
+    margin-block-start: -0.25rem;
+    border-block-start: 1px solid var(--schedule-line);
+    pointer-events: none;
+  }
+}
+
+/* Lined up with the time on the cards. */
+.schedule__hour-label {
+  display: block;
+  padding: calc(0.5rem + 0.25rem) 0.75rem 0.5rem calc(0.75rem + 3px);
+  font-family: var(--ff-alt);
+  font-size: var(--fs-s);
+  font-weight: bold;
+  font-variant-numeric: tabular-nums;
+  color: var(--color-text-meta);
+  opacity: 0.45;
+}
+
+.schedule__day-title {
+  margin: 0 0 0.75rem;
+  padding-block-end: 0.35rem;
+  border-block-end: 2px solid var(--schedule-accent);
+  font-size: var(--fs-l);
+}
+
+.schedule__date {
+  font-family: var(--ff-alt);
+  font-size: var(--fs-s);
+  font-weight: normal;
+  color: var(--color-text-meta);
+  white-space: nowrap;
+}
+
+.schedule__list {
+  display: grid;
+  gap: 0.5rem;
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+.schedule__card {
+  position: relative;
+  display: grid;
+  grid-template-columns: 1fr auto;
+  gap: 0.15rem 0.5rem;
+  margin: 0;
+  padding: 0.5rem 0.75rem 0.6rem;
+  border: 1px solid var(--schedule-line);
+  border-inline-start: 3px solid var(--schedule-accent);
+  border-radius: var(--radius-m);
+  background: var(--schedule-card-bg);
+  transition: border-color 0.15s;
+
+  &:hover {
+    border-color: var(--schedule-accent);
+  }
+
+  &:has(a:focus-visible) {
+    outline: 2px solid var(--schedule-accent);
+    outline-offset: 2px;
+  }
+}
+
+.schedule__time {
+  font-family: var(--ff-alt);
+  font-size: var(--fs-s);
+  font-weight: bold;
+  font-variant-numeric: tabular-nums;
+  color: var(--color-text-meta);
+}
+
+.schedule__langs {
+  /* Above the card-wide link, so the badge tooltip still works. */
+  position: relative;
+  z-index: 1;
+  display: flex;
+  gap: 0.25rem;
+}
+
+.schedule__lang {
+  padding: 0 0.4rem;
+  border: 1px solid var(--schedule-line);
+  border-radius: 999px;
+  font-family: var(--ff-alt);
+  font-size: var(--fs-xs);
+  letter-spacing: 0.03em;
+  text-decoration: none;
+  color: var(--color-text-meta);
+  cursor: help;
+}
+
+.schedule__title {
+  grid-column: 1 / -1;
+  font-family: var(--ff-headings);
+  font-weight: 600;
+  line-height: 1.3;
+  text-decoration: none;
+
+  /* Make the whole card clickable. Being absolutely positioned against the card, it is not
+     clipped by the overflow set in the grid view. */
+  &::after {
+    content: "";
+    position: absolute;
+    inset: 0;
+    border-radius: inherit;
+  }
+}
+
+/* The picker only exists with JavaScript and is only used on narrow screens. */
+.schedule__picker {
+  display: none;
+}
+
+@container (width < 48rem) {
+  .schedule__picker:not([hidden]) {
+    position: sticky;
+    inset-block-start: 0;
+    z-index: 2;
+    display: flex;
+    gap: 0.25rem;
+    margin-block-end: 1rem;
+    padding: 0.25rem;
+    border-radius: var(--radius-l);
+    background: var(--color-body-bg);
+    box-shadow: inset 0 0 0 1px var(--schedule-line);
+  }
+
+  .schedule__pick {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    padding: 0.35rem 0.25rem;
+    border: 0;
+    border-radius: var(--radius-m);
+    background: transparent;
+    color: var(--color-text);
+    font-family: var(--ff-alt);
+    font-size: var(--fs-s);
+    font-weight: bold;
+    cursor: pointer;
+
+    &[aria-pressed="true"] {
+      background: var(--schedule-accent);
+      color: var(--color-body-bg);
+
+      .schedule__pick-date {
+        color: inherit;
+      }
+    }
+  }
+
+  .schedule__pick-date {
+    font-size: var(--fs-xs);
+    font-weight: normal;
+    color: var(--color-text-meta);
+  }
+
+  .schedule--picker {
+    .schedule__day:not(.schedule__day--selected) {
+      display: none;
+    }
+
+    /* The picker already names the day. */
+    .schedule__day-title {
+      position: absolute;
+      width: 1px;
+      height: 1px;
+      overflow: hidden;
+      clip-path: inset(50%);
+      white-space: nowrap;
+    }
+  }
+}

assets/js/schedule.js

@@ -0,0 +1,27 @@
+// Day picker for the schedule shortcode. The CSS only uses it on narrow screens;
+// without JavaScript all days stack vertically there.
+for (const schedule of document.querySelectorAll('[data-schedule]')) {
+  const picker = schedule.querySelector('.schedule__picker');
+  const buttons = [...picker.querySelectorAll('button')];
+
+  const select = (selected) => {
+    for (const button of buttons) {
+      const isSelected = button === selected;
+      button.setAttribute('aria-pressed', isSelected);
+      document
+        .getElementById(button.getAttribute('aria-controls'))
+        .classList.toggle('schedule__day--selected', isSelected);
+    }
+  };
+
+  for (const button of buttons) {
+    button.addEventListener('click', () => select(button));
+  }
+
+  // During the event, start on today's tours. The 'sv' locale formats as YYYY-MM-DD.
+  const today = new Date().toLocaleDateString('sv');
+  select(buttons.find((button) => button.dataset.date === today) ?? buttons[0]);
+
+  picker.hidden = false;
+  schedule.classList.add('schedule--picker');
+}