Replace all CSS variables with explicit hex colors for guaranteed distinction

src/main/resources/templates/fragments/artist-list.html

@@ -1,6 +1,6 @@
 <div id="artist-list" hx-swap-oob="true">
 {#if artists.isEmpty()}
-<div style="background:color-mix(in srgb,var(--b1),white 8%);border:1px solid var(--b3);border-radius:0.5rem;padding:2.5rem;text-align:center">
+<div style="background:#242830;border:1px solid #111316;border-radius:0.5rem;padding:2.5rem;text-align:center">
   <svg class="icon-lg" style="margin:0 auto 0.75rem;color:var(--bc);opacity:0.15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
     <path d="M12 2l3.09 6.26L22 9.27l-5 4.87 1.18 6.88L12 17.77l-6.18 3.25L7 14.14 2 9.27l6.91-1.01L12 2z"/>
   </svg>
@@ -11,7 +11,7 @@
 <div class="overflow-x-auto rounded-box border border-base-300">
   <table class="table table-pin-rows">
     <thead>
-      <tr style="background:color-mix(in srgb, var(--b2) 80%, transparent)">
+      <tr style="background:#1a1d23">
         <th>Artist</th>
         <th>Since</th>
         <th>Release Types</th>
@@ -20,7 +20,7 @@
     </thead>
     <tbody>
       {#for artist in artists}
-      <tr style="transition:background 0.15s" onmouseover="this.style.background='color-mix(in srgb, var(--b2) 50%, transparent)'" onmouseout="this.style.background=''">
+      <tr style="transition:background 0.15s" onmouseover="this.style.background='#242830'" onmouseout="this.style.background=''">
         <td>
           <div style="font-weight:500">{artist.name}</div>
           {#if artist.disambiguation}