Add open practice display mode

src/styles.css

@@ -630,6 +630,9 @@ select:focus {
 
 .overlay-meta {
   text-align: right;
+  display: grid;
+  justify-items: end;
+  gap: 10px;
 }
 
 .overlay-clock {
@@ -638,6 +641,10 @@ select:focus {
   font-weight: 800;
 }
 
+.overlay-fullscreen-btn {
+  align-self: start;
+}
+
 .overlay-status {
   color: var(--muted);
   text-transform: uppercase;
@@ -696,6 +703,37 @@ select:focus {
   padding: 8px 12px 12px;
 }
 
+.overlay-display-wrap {
+  display: grid;
+  gap: 16px;
+}
+
+.overlay-stats-row {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 12px;
+}
+
+.overlay-stat-card {
+  border: 1px solid var(--line);
+  border-radius: 16px;
+  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
+  padding: 14px 16px;
+}
+
+.overlay-stat-card span,
+.overlay-stat-card small {
+  display: block;
+  color: var(--muted);
+}
+
+.overlay-stat-card strong {
+  display: block;
+  margin: 8px 0 4px;
+  font-family: Orbitron, sans-serif;
+  font-size: clamp(1.4rem, 2vw, 2.1rem);
+}
+
 .overlay-side {
   display: grid;
   gap: 16px;
@@ -877,6 +915,10 @@ select:focus {
     grid-template-columns: 1fr;
   }
 
+  .overlay-stats-row {
+    grid-template-columns: 1fr;
+  }
+
   .overlay-speaker {
     grid-template-columns: 1fr;
   }