Mixed bag of things

src/views/main_view.rs

@@ -41,7 +41,24 @@ pub fn render(frame: &mut Frame, app: &App, snapshot: &SequencerSnapshot, area:
     }
 
     render_sequencer(frame, app, snapshot, sequencer_area);
-    render_vu_meter(frame, app, vu_area);
+
+    // Calculate actual grid height to align VU meter
+    let pattern = app.current_edit_pattern();
+    let page = app.editor_ctx.step / STEPS_PER_PAGE;
+    let page_start = page * STEPS_PER_PAGE;
+    let steps_on_page = (page_start + STEPS_PER_PAGE).min(pattern.length) - page_start;
+    let num_rows = steps_on_page.div_ceil(8);
+    let spacing = num_rows.saturating_sub(1) as u16;
+    let row_height = sequencer_area.height.saturating_sub(spacing) / num_rows as u16;
+    let actual_grid_height = row_height * num_rows as u16 + spacing;
+
+    let aligned_vu_area = Rect {
+        y: sequencer_area.y,
+        height: actual_grid_height,
+        ..vu_area
+    };
+
+    render_vu_meter(frame, app, aligned_vu_area);
 }
 
 const STEPS_PER_PAGE: usize = 32;

src/views/options_view.rs

@@ -29,7 +29,7 @@ pub fn render(frame: &mut Frame, app: &App, link: &LinkState, area: Rect) {
     };
 
     let [display_area, _, link_area, _, session_area] = Layout::vertical([
-        Constraint::Length(7),
+        Constraint::Length(8),
         Constraint::Length(1),
         Constraint::Length(5),
         Constraint::Length(1),
@@ -63,6 +63,7 @@ fn render_display_section(frame: &mut Frame, app: &App, area: Rect) {
     );
 
     let focus = app.options.focus;
+    let flash_str = format!("{:.0}%", app.ui.flash_brightness * 100.0);
     let lines = vec![
         render_option_line(
             "Refresh rate",
@@ -93,6 +94,11 @@ fn render_display_section(frame: &mut Frame, app: &App, area: Rect) {
             if app.ui.show_completion { "On" } else { "Off" },
             focus == OptionsFocus::ShowCompletion,
         ),
+        render_option_line(
+            "Flash brightness",
+            &flash_str,
+            focus == OptionsFocus::FlashBrightness,
+        ),
     ];
 
     frame.render_widget(Paragraph::new(lines), content_area);

src/views/render.rs

@@ -41,9 +41,20 @@ fn adjust_spans_for_line(
 
 pub fn render(frame: &mut Frame, app: &App, link: &LinkState, snapshot: &SequencerSnapshot) {
     let term = frame.area();
+
+    let bg_color = if app.ui.event_flash > 0.0 {
+        let i = (app.ui.event_flash * app.ui.flash_brightness * 60.0) as u8;
+        Color::Rgb(i, i, i)
+    } else {
+        Color::Reset
+    };
+
     let blank = " ".repeat(term.width as usize);
     let lines: Vec<Line> = (0..term.height).map(|_| Line::raw(&blank)).collect();
-    frame.render_widget(Paragraph::new(lines), term);
+    frame.render_widget(
+        Paragraph::new(lines).style(Style::default().bg(bg_color)),
+        term,
+    );
 
     if app.ui.show_title {
         title_view::render(frame, term, &app.ui);