diff --git a/apps/status/src/data.ts b/apps/status/src/data.ts
index f8a27f0..10cfb9c 100644
--- a/apps/status/src/data.ts
+++ b/apps/status/src/data.ts
@@ -125,15 +125,14 @@ export async function loadMonitors(pageId: string, window: Window): Promise<Moni
     GROUP BY monitor_id, bucket_start
     ORDER BY monitor_id, bucket_start ASC
   `;
-  const bucketsByMonitor: Record<string, MonitorRow["buckets"]> = {};
+  // Index actual rollup data by (monitor_id, isoBucketStart) so we can fill in
+  // the missing slots below.
+  const indexed: Record<string, Record<string, { total: number; up: number; avg_latency: number | null }>> = {};
   const latencyByMonitor: Record<string, { sum: number; n: number }> = {};
   for (const r of rollupRows) {
-    if (!bucketsByMonitor[r.monitor_id]) bucketsByMonitor[r.monitor_id] = [];
-    bucketsByMonitor[r.monitor_id]!.push({
-      start: r.bucket_start instanceof Date ? r.bucket_start.toISOString() : String(r.bucket_start),
-      total: r.total,
-      up:    r.up_count,
-    });
+    const startIso = r.bucket_start instanceof Date ? r.bucket_start.toISOString() : String(r.bucket_start);
+    if (!indexed[r.monitor_id]) indexed[r.monitor_id] = {};
+    indexed[r.monitor_id]![startIso] = { total: r.total, up: r.up_count, avg_latency: r.avg_latency ?? null };
     if (r.avg_latency != null) {
       const acc = latencyByMonitor[r.monitor_id] ?? { sum: 0, n: 0 };
       acc.sum += r.avg_latency * r.total;
@@ -142,6 +141,35 @@ export async function loadMonitors(pageId: string, window: Window): Promise<Moni
     }
   }
 
+  // Generate the full sequence of expected bucket timestamps so empty bars
+  // render as "no data" instead of disappearing entirely. Truncate `now()` to
+  // the unit so the slot boundaries line up with what the rollup writes.
+  const bucketMs = bucket === "hourly" ? 3600_000 : bucket === "daily" ? 86_400_000 : 604_800_000;
+  const truncate = (d: Date): Date => {
+    const t = new Date(d);
+    if (bucket === "hourly") { t.setUTCMinutes(0, 0, 0); }
+    else                     { t.setUTCHours(0, 0, 0, 0); }
+    if (bucket === "weekly") {
+      // ISO week starts Monday.
+      const day = (t.getUTCDay() + 6) % 7;
+      t.setUTCDate(t.getUTCDate() - day);
+    }
+    return t;
+  };
+  const nowTrunc = truncate(new Date()).getTime();
+  const slotIsos: string[] = [];
+  for (let i = count - 1; i >= 0; i--) {
+    slotIsos.push(new Date(nowTrunc - i * bucketMs).toISOString());
+  }
+  const bucketsByMonitor: Record<string, MonitorRow["buckets"]> = {};
+  for (const id of ids) {
+    const slotMap = indexed[id] ?? {};
+    bucketsByMonitor[id] = slotIsos.map((iso) => {
+      const hit = slotMap[iso];
+      return hit ? { start: iso, total: hit.total, up: hit.up } : { start: iso, total: 0, up: 0 };
+    });
+  }
+
   // Step 4: tiny recent latency history for the sparkline (last 30 hourly buckets).
   const latRows = await sql<any[]>`
     SELECT monitor_id, region, bucket_start, avg_latency
diff --git a/apps/status/src/views/page.ejs b/apps/status/src/views/page.ejs
index 52c128d..359d5fc 100644
--- a/apps/status/src/views/page.ejs
+++ b/apps/status/src/views/page.ejs
@@ -24,15 +24,15 @@
     return 'Unknown';
   }
   function statusColor(s) {
-    if (s === 'up') return '#10b981';
-    if (s === 'down') return '#ef4444';
-    return '#9ca3af';
+    if (s === 'up')   return 'var(--bar-up)';
+    if (s === 'down') return 'var(--bar-down)';
+    return 'var(--muted)';
   }
   function bucketColor(b) {
-    if (b.total === 0) return '#374151';
-    if (b.up === b.total) return '#10b981';
-    if (b.up === 0) return '#ef4444';
-    return '#f59e0b';
+    if (!b || b.total === 0) return 'var(--bar-empty)';
+    if (b.up === b.total) return 'var(--bar-up)';
+    if (b.up === 0)       return 'var(--bar-down)';
+    return 'var(--bar-partial)';
   }
 
   // Overall status: down if any monitor is down, degraded if any partial, else up.
@@ -45,9 +45,9 @@
   const overallText = overall === 'up' ? 'All systems operational'
                     : overall === 'degraded' ? 'Some systems degraded'
                     : 'Major outage in progress';
-  const overallColor = overall === 'up' ? '#10b981'
-                     : overall === 'degraded' ? '#f59e0b'
-                     : '#ef4444';
+  const overallColor = overall === 'up' ? 'var(--bar-up)'
+                     : overall === 'degraded' ? 'var(--bar-partial)'
+                     : 'var(--bar-down)';
 %><!DOCTYPE html>
 <html lang="en" class="<%= themeClass %>">
 <head>
@@ -63,27 +63,36 @@
   <link rel="manifest" href="/<%= page.slug %>/manifest.json">
   <style>
     :root {
-      --bg: #ffffff; --fg: #0f172a; --muted: #64748b; --card: #f8fafc;
-      --border: #e2e8f0; --accent: #0ea5e9; --green: #10b981; --red: #ef4444; --amber: #f59e0b;
+      --bg: #ffffff; --fg: #1e293b; --muted: #64748b; --card: #f8fafc;
+      --border: #e2e8f0; --accent: #0284c7;
+      --bar-up: #10b981; --bar-down: #ef4444; --bar-partial: #f59e0b; --bar-empty: #e5e7eb;
+      --overall-fg: #ffffff;
     }
+    /* OLED-friendly dark mode: pure black background for power saving, but a
+       muted slate-300 foreground instead of white so it doesn't blow out on
+       self-emissive displays. */
     html.dark, html:not(.light):not(.dark) { color-scheme: dark; }
     @media (prefers-color-scheme: dark) {
       html:not(.light) {
-        --bg: #0a0a0a; --fg: #f1f5f9; --muted: #94a3b8; --card: #111827;
-        --border: #1f2937; --accent: #38bdf8;
+        --bg: #0a0a0a; --fg: #c2c8d0; --muted: #6b7280; --card: #131418;
+        --border: #1f2026; --accent: #3b9bd1;
+        --bar-up: #1f8f6e; --bar-down: #c84a4a; --bar-partial: #c98a2c; --bar-empty: #1f2026;
+        --overall-fg: #f1f5f9;
       }
     }
     html.dark {
-      --bg: #0a0a0a; --fg: #f1f5f9; --muted: #94a3b8; --card: #111827;
-      --border: #1f2937; --accent: #38bdf8;
+      --bg: #0a0a0a; --fg: #c2c8d0; --muted: #6b7280; --card: #131418;
+      --border: #1f2026; --accent: #3b9bd1;
+      --bar-up: #1f8f6e; --bar-down: #c84a4a; --bar-partial: #c98a2c; --bar-empty: #1f2026;
+      --overall-fg: #f1f5f9;
     }
     * { box-sizing: border-box; }
     body { margin: 0; background: var(--bg); color: var(--fg); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif; line-height: 1.5; }
     main { max-width: 880px; margin: 0 auto; padding: 3rem 1.5rem; }
     h1 { font-size: 1.75rem; font-weight: 700; margin: 0 0 0.5rem; }
     .muted { color: var(--muted); font-size: 0.875rem; }
-    .overall { padding: 1.25rem 1.5rem; border-radius: 12px; color: white; font-weight: 600; font-size: 1.05rem; margin: 1.5rem 0 2rem; display: flex; align-items: center; gap: 0.75rem; }
-    .overall .dot { width: 12px; height: 12px; border-radius: 50%; background: white; }
+    .overall { padding: 1.25rem 1.5rem; border-radius: 12px; color: var(--overall-fg); font-weight: 600; font-size: 1.05rem; margin: 1.5rem 0 2rem; display: flex; align-items: center; gap: 0.75rem; }
+    .overall .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--overall-fg); opacity: 0.9; }
     .group-title { font-size: 0.85rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin: 2rem 0 0.75rem; }
     .monitors { display: flex; flex-direction: column; gap: 0.5rem; }
     .monitor { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 1rem 1.25rem; }
@@ -93,8 +102,10 @@
     .monitor-name .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
     .monitor-meta { display: flex; gap: 1rem; align-items: center; font-size: 0.85rem; color: var(--muted); }
     .uptime-pct { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--fg); }
-    .bars { display: flex; gap: 2px; height: 32px; margin-top: 0.5rem; align-items: stretch; }
-    .bar { flex: 1; min-width: 0; border-radius: 2px; }
+    .bars { display: flex; gap: 2px; height: 32px; margin-top: 0.75rem; align-items: stretch; }
+    .bar { flex: 1; min-width: 0; border-radius: 2px; transition: opacity 0.15s; }
+    .bar:hover { opacity: 0.8; }
+    .bars-meta { display: flex; justify-content: space-between; font-size: 0.7rem; color: var(--muted); margin-top: 0.4rem; }
     .regions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.5rem; font-size: 0.75rem; }
     .region { padding: 0.15rem 0.5rem; border-radius: 999px; border: 1px solid var(--border); }
     .region.up { color: var(--green); border-color: rgba(16,185,129,0.3); }
@@ -160,13 +171,23 @@
                 <span class="uptime-pct"><%= fmtPct(m.uptime_pct) %></span>
               </div>
             </div>
-            <% if (m.buckets && m.buckets.length > 0) { %>
-              <div class="bars" title="<%= statusLabel(m.current_state) %>">
-                <% m.buckets.forEach(function(b) { %>
-                  <div class="bar" style="background: <%= bucketColor(b) %>;"></div>
-                <% }); %>
-              </div>
-            <% } %>
+            <%
+              const buckets = m.buckets || [];
+              const windowLabel = page.default_window === '24h' ? 'Last 24 hours'
+                               : page.default_window === '7d'  ? 'Last 7 days'
+                               : page.default_window === '30d' ? 'Last 30 days'
+                               : 'Last 90 days';
+              const hasData = buckets.some(b => b.total > 0);
+            %>
+            <div class="bars" title="<%= statusLabel(m.current_state) %>">
+              <% buckets.forEach(function(b) { %>
+                <div class="bar" style="background: <%= bucketColor(b) %>;" title="<%= b.total > 0 ? (Math.round(100 * b.up / b.total) + '% up') : 'no data' %>"></div>
+              <% }); %>
+            </div>
+            <div class="bars-meta">
+              <span><%= windowLabel %></span>
+              <span><%= hasData ? fmtPct(m.uptime_pct) + ' uptime' : 'awaiting data' %></span>
+            </div>
             <% if (m.region_states && m.region_states.length > 1) { %>
               <div class="regions">
                 <% m.region_states.forEach(function(r) { %>