refactor(tui): consistent chrome across all views

- Extract divider() and emptyState() helpers to format.go
- All empty states now use bordered box with accent color
- Detail and alert detail panels get header/section dividers
- SLA label width 14→16 to match detail/alert panels
- Logs key hints moved from content to dashboard footer
- History/SLA panels use shared divider helper

internal/tui/format.go

@@ -2,11 +2,37 @@ package tui
 
 import (
 	"fmt"
+	"strings"
 	"time"
 
 	"gitea.lerkolabs.com/lerkolabs/uptop/internal/models"
+	"github.com/charmbracelet/lipgloss"
 )
 
+func (m Model) dividerWidth() int {
+	w := m.termWidth - chromePadH - 4
+	if w < 40 {
+		w = 40
+	}
+	return w
+}
+
+func (m Model) divider() string {
+	return "  " + subtleStyle.Render(strings.Repeat("─", m.dividerWidth()))
+}
+
+func (m Model) emptyState(message, hint string) string {
+	content := message
+	if hint != "" {
+		content += "\n\n" + subtleStyle.Render(hint)
+	}
+	return "\n" + lipgloss.NewStyle().
+		Border(lipgloss.RoundedBorder()).
+		BorderForeground(m.theme.Accent).
+		Padding(1, 3).
+		Render(content)
+}
+
 func limitStr(text string, max int) string {
 	runes := []rune(text)
 	if len(runes) > max {

internal/tui/tab_alerts.go

@@ -164,7 +164,7 @@ func fmtAlertLastSent(h monitor.AlertHealth) string {
 
 func (m Model) viewAlertsTab() string {
 	if len(m.alerts) == 0 {
-		return "\n  No alert channels configured. Press [n] to add one."
+		return m.emptyState("No alert channels configured.", "[n] Add your first alert")
 	}
 
 	var headers []string
@@ -214,7 +214,8 @@ func (m Model) viewAlertDetailPanel() string {
 
 	var b strings.Builder
 
-	b.WriteString(subtleStyle.Render("  Alerts > ") + titleStyle.Render(a.Name) + "\n\n")
+	b.WriteString(subtleStyle.Render("  Alerts > ") + titleStyle.Render(a.Name) + "\n")
+	b.WriteString(m.divider() + "\n")
 
 	row := func(label, value string) {
 		fmt.Fprintf(&b, "  %-16s %s\n", subtleStyle.Render(label), value)
@@ -240,12 +241,13 @@ func (m Model) viewAlertDetailPanel() string {
 		row("Last Error", dangerStyle.Render(limitStr(h.LastError, 60)))
 	}
 
-	b.WriteString("\n" + subtleStyle.Render("  CONFIGURATION") + "\n")
+	b.WriteString(m.divider() + "\n")
+	b.WriteString(subtleStyle.Render("  CONFIGURATION") + "\n")
 	for k, v := range a.Settings {
 		row(k, v)
 	}
 
-	b.WriteString("\n\n")
+	b.WriteString(m.divider() + "\n")
 	b.WriteString(subtleStyle.Render("  [i/Esc] Back  [e] Edit  [t] Test  [q] Quit"))
 
 	return lipgloss.NewStyle().Padding(1, 2).Render(b.String())

internal/tui/tab_logs.go

@@ -85,7 +85,7 @@ func renderLogLine(line string) string {
 func (m Model) viewLogsTab() string {
 	content := m.logViewport.View()
 	if strings.TrimSpace(content) == "" || content == "Waiting for logs..." {
-		return "\n  No log entries yet. Logs appear as monitors run checks."
+		return m.emptyState("No log entries yet.", "Logs appear as monitors run checks")
 	}
 
 	lines := strings.Split(content, "\n")
@@ -112,7 +112,7 @@ func (m Model) viewLogsTab() string {
 	}
 
 	header := subtleStyle.Render(fmt.Sprintf(
-		"  %d entries  [↑/↓] Scroll  [PgUp/PgDn] Page  [f] Filter: %s", shown, filterLabel))
+		"  %d entries  Filter: %s", shown, filterLabel))
 
 	if m.logFilterImportant && shown < total {
 		header += subtleStyle.Render(fmt.Sprintf("  (%d hidden)", total-shown))

internal/tui/tab_maint.go

@@ -93,7 +93,7 @@ func (m Model) isMonitorInMaintenance(monitorID int) bool {
 
 func (m Model) viewMaintTab() string {
 	if len(m.maintenanceWindows) == 0 {
-		return "\n  No maintenance windows or incidents. Press [n] to create one."
+		return m.emptyState("No maintenance windows or incidents.", "[n] Create one")
 	}
 
 	var headers []string

internal/tui/tab_nodes.go

@@ -7,7 +7,7 @@ import (
 
 func (m Model) viewNodesTab() string {
 	if len(m.nodes) == 0 {
-		return "\n  No probe nodes connected."
+		return m.emptyState("No probe nodes connected.", "")
 	}
 
 	var headers []string

internal/tui/tab_sites.go

@@ -101,16 +101,7 @@ func (m Model) computeLayout() tableLayout {
 func (m Model) viewSitesTab() string {
 
 	if len(m.sites) == 0 {
-		welcome := lipgloss.NewStyle().
-			Border(lipgloss.RoundedBorder()).
-			BorderForeground(m.theme.Accent).
-			Padding(1, 3).
-			Render(
-				titleStyle.Render("uptop") + "\n\n" +
-					"No monitors configured yet.\n\n" +
-					subtleStyle.Render("[n] Add your first monitor"),
-			)
-		return "\n" + welcome
+		return m.emptyState(titleStyle.Render("uptop")+"\n\nNo monitors configured yet.", "[n] Add your first monitor")
 	}
 
 	layout := m.computeLayout()

internal/tui/tab_users.go

@@ -29,7 +29,7 @@ func fmtKey(key string) string {
 
 func (m Model) viewUsersTab() string {
 	if len(m.users) == 0 {
-		return "\n  No users configured. Press [n] to add one."
+		return m.emptyState("No users configured.", "[n] Add a user")
 	}
 
 	var headers []string

internal/tui/view_dashboard.go

@@ -266,7 +266,7 @@ func (m Model) renderFooter(stats dashboardStats) string {
 	case 1:
 		keys = "[n]New [e]Edit [i]Info [d]Del [t]Test [T]Theme [Tab]Switch [q]Quit"
 	case 2:
-		keys = "[f]Filter [T]Theme [Tab]Switch [q]Quit"
+		keys = "[↑/↓]Scroll  [PgUp/PgDn]Page  [f]Filter  [T]Theme  [Tab]Switch  [q]Quit"
 	case 4:
 		keys = "[n]New [x]End [d]Del [T]Theme [Tab]Switch [q]Quit"
 	case 5:

internal/tui/view_detail.go

@@ -30,7 +30,8 @@ func (m Model) viewDetailPanel() string {
 	if breadcrumb == "" {
 		breadcrumb = subtleStyle.Render("  Sites > ") + titleStyle.Render(site.Name)
 	}
-	b.WriteString(breadcrumb + "\n\n")
+	b.WriteString(breadcrumb + "\n")
+	b.WriteString(m.divider() + "\n")
 
 	row := func(label, value string) {
 		fmt.Fprintf(&b, "  %-16s %s\n", subtleStyle.Render(label), value)
@@ -200,7 +201,7 @@ func (m Model) viewDetailPanel() string {
 		b.WriteString("  " + subtleStyle.Render("[h] History") + "\n")
 	}
 
-	b.WriteString("\n")
+	b.WriteString(m.divider() + "\n")
 	const sparkWidth = 40
 	if site.Type == "push" {
 		b.WriteString("  " + heartbeatSparkline(hist.Statuses, sparkWidth))
@@ -242,7 +243,8 @@ func (m Model) viewDetailPanel() string {
 		}
 	}
 
-	b.WriteString("\n\n")
+	b.WriteString("\n")
+	b.WriteString(m.divider() + "\n")
 	b.WriteString(subtleStyle.Render("  [i/Esc] Back  [e] Edit  [h] History  [s] SLA  [q] Quit"))
 
 	return lipgloss.NewStyle().Padding(1, 2).Render(b.String())

internal/tui/view_history.go

@@ -153,16 +153,13 @@ func (m Model) viewHistoryPanel() string {
 	header += "  " + subtleStyle.Render("[q] Back")
 	b.WriteString(header + "\n")
 
-	divWidth := m.termWidth - chromePadH - 4
-	if divWidth < 40 {
-		divWidth = 40
-	}
-	b.WriteString("  " + subtleStyle.Render(strings.Repeat("─", divWidth)) + "\n")
+	divWidth := m.dividerWidth()
+	b.WriteString(m.divider() + "\n")
 
 	sparkline := stateChangeSparkline(m.historyChanges, divWidth)
 	if sparkline != "" {
 		b.WriteString("  " + sparkline + "\n")
-		b.WriteString("  " + subtleStyle.Render(strings.Repeat("─", divWidth)) + "\n")
+		b.WriteString(m.divider() + "\n")
 	}
 
 	fmt.Fprintf(&b, "  %-18s %-17s %-12s %s\n",
@@ -177,7 +174,7 @@ func (m Model) viewHistoryPanel() string {
 		b.WriteString(m.historyViewport.View())
 	}
 
-	b.WriteString("\n  " + subtleStyle.Render(strings.Repeat("─", divWidth)) + "\n")
+	b.WriteString("\n" + m.divider() + "\n")
 
 	stats := computeHistoryStats(m.historyChanges)
 	parts := []string{fmt.Sprintf("%d events", stats.totalEvents)}

internal/tui/view_sla.go

@@ -27,20 +27,14 @@ func (m Model) viewSLAPanel() string {
 	header := "  " + titleStyle.Render("SLA REPORT: "+m.slaSiteName)
 	header += "  " + subtleStyle.Render("[q] Back")
 	b.WriteString(header + "\n")
-
-	divWidth := m.termWidth - chromePadH - 4
-	if divWidth < 40 {
-		divWidth = 40
-	}
-	b.WriteString("  " + subtleStyle.Render(strings.Repeat("─", divWidth)) + "\n")
+	b.WriteString(m.divider() + "\n")
 
 	period := slaPeriods[m.slaPeriodIdx]
 	b.WriteString("  " + subtleStyle.Render("Period: Last "+period.label) + "\n\n")
 
 	r := m.slaReport
 
-	// Uptime bar
-	barWidth := divWidth - 30
+	barWidth := m.dividerWidth() - 30
 	if barWidth < 10 {
 		barWidth = 10
 	}
@@ -52,23 +46,23 @@ func (m Model) viewSLAPanel() string {
 	if r.UptimePct < 99.0 {
 		uptimeColor = dangerStyle
 	}
-	fmt.Fprintf(&b, "  %-14s %s  %s\n", subtleStyle.Render("Uptime"), uptimeColor.Render(fmt.Sprintf("%s%%", fmtPct(r.UptimePct))), bar)
-	fmt.Fprintf(&b, "  %-14s %s\n", subtleStyle.Render("Downtime"), fmtDuration(r.Downtime))
-	fmt.Fprintf(&b, "  %-14s %d\n", subtleStyle.Render("Outages"), r.OutageCount)
+	fmt.Fprintf(&b, "  %-16s %s  %s\n", subtleStyle.Render("Uptime"), uptimeColor.Render(fmt.Sprintf("%s%%", fmtPct(r.UptimePct))), bar)
+	fmt.Fprintf(&b, "  %-16s %s\n", subtleStyle.Render("Downtime"), fmtDuration(r.Downtime))
+	fmt.Fprintf(&b, "  %-16s %d\n", subtleStyle.Render("Outages"), r.OutageCount)
 
 	if r.OutageCount > 0 {
-		fmt.Fprintf(&b, "  %-14s %s\n", subtleStyle.Render("Longest"), fmtDuration(r.LongestOut))
-		fmt.Fprintf(&b, "  %-14s %s\n", subtleStyle.Render("MTTR"), fmtDuration(r.MTTR))
-		fmt.Fprintf(&b, "  %-14s %s\n", subtleStyle.Render("MTBF"), fmtDuration(r.MTBF))
+		fmt.Fprintf(&b, "  %-16s %s\n", subtleStyle.Render("Longest"), fmtDuration(r.LongestOut))
+		fmt.Fprintf(&b, "  %-16s %s\n", subtleStyle.Render("MTTR"), fmtDuration(r.MTTR))
+		fmt.Fprintf(&b, "  %-16s %s\n", subtleStyle.Render("MTBF"), fmtDuration(r.MTBF))
 	}
 
-	b.WriteString("\n  " + subtleStyle.Render(strings.Repeat("─", divWidth)) + "\n")
+	b.WriteString("\n" + m.divider() + "\n")
 
 	if len(m.slaDailyBreakdown) > 0 {
 		b.WriteString(m.slaViewport.View())
 	}
 
-	b.WriteString("\n  " + subtleStyle.Render(strings.Repeat("─", divWidth)) + "\n")
+	b.WriteString("\n" + m.divider() + "\n")
 
 	var keys []string
 	for i, p := range slaPeriods {
@@ -80,7 +74,7 @@ func (m Model) viewSLAPanel() string {
 		}
 	}
 	b.WriteString("  " + strings.Join(keys, "  "))
-	b.WriteString("  " + subtleStyle.Render("[j/k/↑/↓] Scroll"))
+	b.WriteString("  " + subtleStyle.Render("[j/k/↑/↓] Scroll  [q/Esc] Back"))
 
 	return lipgloss.NewStyle().Padding(1, 2).Render(b.String())
 }
@@ -88,7 +82,7 @@ func (m Model) viewSLAPanel() string {
 func (m Model) buildSLADailyContent() string {
 	var b strings.Builder
 
-	barWidth := m.termWidth - chromePadH - 30
+	barWidth := m.dividerWidth() - 30
 	if barWidth < 10 {
 		barWidth = 10
 	}