Revert "fix(calendar): stack layout, cap block at 1000px, restore events scroll"

This reverts commit bf6ca475db.

src/lib/components/blocks/CalendarBlock.svelte

@@ -397,7 +397,7 @@
 </script>
 
 <div
-  class="{layoutClasses} w-full max-w-[1000px] mx-auto min-w-0 calendar-block border border-stein-200 overflow-hidden"
+  class="{layoutClasses} w-full min-w-0 calendar-block border border-stein-200 overflow-hidden"
   data-block="Calendar" data-block-type="calendar"
   data-block-slug={block._slug}
 >
@@ -597,10 +597,9 @@
     </div>
   {/if}
 
-  <div class="calendar-grid-wrapper flex w-full flex-col">
+  <div class="calendar-grid-wrapper grid w-full grid-cols-1 md:grid-cols-2 gap-0">
     <!-- Links: Kalender -->
-    <div class="calendar-column p-4 flex flex-col bg-himmel-800 text-himmel-100 shadow-sm">
-     <div class="w-full max-w-[480px] mx-auto">
+    <div class="calendar-column min-h-full p-4 flex flex-col bg-himmel-800 text-himmel-100 shadow-sm">
       <div class="flex items-center justify-between gap-2 mb-4">
         <button
           type="button"
@@ -676,16 +675,15 @@
           {/if}
         {/each}
       </div>
-     </div>
     </div>
 
     <!-- Rechts: alle zukünftigen Termine als Accordion. Datum + Headline
          im summary, Beschreibung + Aktionen im body. Kalender-Klick
          filtert auf einen Tag; ohne Filter zeigt Liste alles ab heute,
          gruppiert nach Tag mit großzügigem header. -->
-    <div class="calendar-events-wrapper flex flex-col" bind:this={panelEl}>
+    <div class="calendar-events-wrapper min-h-0 flex flex-col" bind:this={panelEl}>
       <div
-        class="calendar-events-panel border-t border-stein-200 bg-stein-0 flex flex-col"
+        class="calendar-events-panel border-t md:border-t-0 md:border-l border-stein-200 bg-stein-0 flex flex-col overflow-hidden flex-1 min-h-0"
       >
       {#if items.length === 0}
         <p class="text-sm text-stein-500 p-4">{t(T.calendar_no_events)}</p>
@@ -707,7 +705,7 @@
             {t(T.calendar_clear_filter)}
           </button>
         </div>
-        <ul class="m-0! p-0! list-none max-h-[600px] overflow-auto">
+        <ul class="m-0! p-0! list-none flex-1 min-h-0 overflow-auto">
           {#each selectedDayEvents as item}
             {@render eventAccordion(item, true, false)}
           {/each}
@@ -721,7 +719,7 @@
             {t(T.calendar_event_count, { n: futureEvents.length })}
           </span>
         </div>
-        <ul class="m-0! p-0! list-none max-h-[600px] overflow-auto">
+        <ul class="m-0! p-0! list-none flex-1 min-h-0 overflow-auto">
           {#each futureEventsByDay as group, gIdx}
             <li class="day-group">
               <div class="px-3 py-1 bg-himmel-50/60 text-[11px] uppercase tracking-wide font-medium text-stein-600 sticky top-0 z-10 backdrop-blur-sm">
@@ -759,7 +757,7 @@
             <span class="font-medium uppercase tracking-wide">{t(T.calendar_past_events)}</span>
             <span class="text-stein-500 tabular-nums">· {pastEvents.length}</span>
           </summary>
-          <ul class="m-0! p-0! list-none opacity-80">
+          <ul class="m-0! p-0! list-none flex-1 min-h-0 overflow-auto opacity-80">
             {#each pastEvents as item}
               {@render eventAccordion(item, false, false)}
             {/each}
@@ -845,8 +843,7 @@
     .calendar-block .day-group {
       break-inside: avoid;
     }
-    .calendar-block .calendar-events-panel,
-    .calendar-block .calendar-events-panel ul {
+    .calendar-block .calendar-events-panel {
       overflow: visible !important;
       max-height: none !important;
     }