Colour themes, defaulting to gruvbox dark

Every colour was a 256-colour ANSI index hardcoded in styles.go, so changing
the palette meant editing the styles themselves. This puts a semantic token set
between the two: styles name roles, a theme supplies the colours.

internal/theme holds the twelve tokens, the two built-ins (gruvbox-dark, the
new default, and gruvbox-light) and the loader for user themes in
~/.config/terdut-tui/themes/. A user file may 'extends:' a built-in and
override only what it cares about, and may shadow a built-in name to tweak it
in place. Unknown keys, malformed colours and incomplete themes are refused
with a message naming what went wrong.

Colours are truecolor hex now: lipgloss downsamples for 256- and 16-colour
terminals and honours NO_COLOR, so themes carry no fallbacks of their own.
An ANSI index is still accepted for anyone who would rather follow their
terminal's own palette.

The 21 package-level style vars become a Styles struct on the Model, which is
what rule 3 asked for all along; the four free functions in view.go take one as
their first argument. The embedded bubbles components are restyled from the
same tokens — otherwise a theme would leave a pink selected row and grey help
text behind. Note that the table's Cell style deliberately keeps no foreground:
bubbles renders cells before wrapping the row in Selected, so a colour there
cuts the selection highlight short.

internal/tui/model.go

@@ -5,12 +5,12 @@ import (
 	"time"
 
 	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	"github.com/charmbracelet/bubbles/help"
 	"github.com/charmbracelet/bubbles/table"
 	"github.com/charmbracelet/bubbles/textinput"
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/lipgloss"
 )
 
 // ── Enums ──────────────────────────────────────────────────────────────────
@@ -244,12 +244,14 @@ type Model struct {
 	apiKeyRevokeInput textinput.Model
 	revealedAPIKey    api.APIKey
 
-	help help.Model
-	keys keyMap
+	help   help.Model
+	keys   keyMap
+	styles Styles
 }
 
-func NewModel(client *api.Client, serverURL string, refreshInterval time.Duration) Model {
-	ts := defaultTableStyles()
+func NewModel(client *api.Client, serverURL string, refreshInterval time.Duration, th theme.Theme) Model {
+	st := newStyles(th)
+	ts := st.Table()
 
 	incidentT := table.New(table.WithFocused(true))
 	incidentT.SetStyles(ts)
@@ -301,6 +303,15 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 	revokeIn.Placeholder = "integer key ID"
 	revokeIn.CharLimit = 20
 
+	for _, in := range []*textinput.Model{
+		&noteIn, &snoozeIn, &usernameIn, &emailIn, &topicIn, &keyNameIn, &revokeIn,
+	} {
+		*in = st.Input(*in)
+	}
+
+	helpModel := help.New()
+	helpModel.Styles = st.Help()
+
 	now := time.Now().UTC()
 	today := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC)
 	weekday := int(today.Weekday())
@@ -333,8 +344,9 @@ func NewModel(client *api.Client, serverURL string, refreshInterval time.Duratio
 		ntfyTopicInput:    topicIn,
 		apiKeyNameInput:   keyNameIn,
 		apiKeyRevokeInput: revokeIn,
-		help:              help.New(),
+		help:              helpModel,
 		keys:              keys,
+		styles:            st,
 	}
 }
 
@@ -344,16 +356,6 @@ func (m Model) Init() tea.Cmd {
 
 // ── Table rebuilders ───────────────────────────────────────────────────────
 
-func defaultTableStyles() table.Styles {
-	s := table.DefaultStyles()
-	s.Header = s.Header.Bold(true)
-	s.Selected = s.Selected.
-		Foreground(lipgloss.Color("0")).
-		Background(colorPrimary).
-		Bold(true)
-	return s
-}
-
 // setRows replaces a table's rows and keeps its cursor in a state the rest of
 // this package can rely on: valid whenever the table has any rows at all.
 //
@@ -433,16 +435,16 @@ func (m *Model) refreshDetailContent() {
 		return
 	}
 	if m.mode == modeAlertDetail {
-		m.detailViewport.SetContent(buildAlertDetailContent(m.selectedAlert, m.width))
+		m.detailViewport.SetContent(buildAlertDetailContent(m.styles, m.selectedAlert, m.width))
 		return
 	}
 	m.detailViewport.SetContent(
-		buildIncidentDetailContent(m.selectedIncident, m.timeline, m.noteCursor, m.width))
+		buildIncidentDetailContent(m.styles, m.selectedIncident, m.timeline, m.noteCursor, m.width))
 }
 
 func (m *Model) refreshStatsContent() {
 	m.statsViewport.SetContent(
-		buildStatsContent(m.incidentStats, m.topAlerts, m.hourStats, m.dayStats, m.width))
+		buildStatsContent(m.styles, m.incidentStats, m.topAlerts, m.hourStats, m.dayStats, m.width))
 }
 
 func (m Model) statsViewportHeight() int {

internal/tui/model_test.go

@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	"github.com/charmbracelet/bubbles/table"
 )
 
@@ -177,7 +178,7 @@ func TestAlertRows_ShowIncidentLink(t *testing.T) {
 func TestUserManageRows_ShowMissingTopic(t *testing.T) {
 	topic := "terdut-niklas"
 	empty := ""
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.users = []api.User{
 		{ID: 1, Username: "niklas", NtfyTopic: &topic},
@@ -283,7 +284,7 @@ func TestBuildScheduleDays(t *testing.T) {
 // scheduledWeek builds a model showing the week of 2026-07-27 with the given
 // entries already on the rota.
 func scheduledWeek(entries []api.ScheduleEntry) Model {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.connected = true
 	m.activeSection = sectionSchedule

internal/tui/styles.go

@@ -4,96 +4,172 @@ import (
 	"strings"
 
 	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"github.com/charmbracelet/bubbles/help"
+	"github.com/charmbracelet/bubbles/table"
+	"github.com/charmbracelet/bubbles/textinput"
 	"github.com/charmbracelet/lipgloss"
 )
 
-var (
-	colorPrimary  = lipgloss.Color("69")  // blue
-	colorMuted    = lipgloss.Color("240") // gray
-	colorFiring   = lipgloss.Color("196") // red
-	colorResolved = lipgloss.Color("70")  // green
-	colorAccent   = lipgloss.Color("214") // orange
+// Styles is every style the views draw with, built once from a theme and held
+// on the Model. Nothing here reads a colour literal: the theme is the only
+// place a colour is named.
+type Styles struct {
+	Header      lipgloss.Style
+	TabActive   lipgloss.Style
+	TabInactive lipgloss.Style
+	Footer      lipgloss.Style
+	Status      lipgloss.Style
 
-	colorSevCritical = lipgloss.Color("196") // red
-	colorSevError    = lipgloss.Color("202") // dark orange
-	colorSevWarning  = lipgloss.Color("214") // orange
-	colorSevInfo     = lipgloss.Color("39")  // cyan
-
-	styleHeader = lipgloss.NewStyle().
-			Bold(true).
-			Foreground(colorPrimary).
-			Padding(0, 1)
-
-	styleTabActive = lipgloss.NewStyle().
-			Bold(true).
-			Foreground(lipgloss.Color("0")).
-			Background(colorPrimary).
-			Padding(0, 2)
-
-	styleTabInactive = lipgloss.NewStyle().
-				Foreground(colorMuted).
-				Padding(0, 2)
-
-	styleFooter = lipgloss.NewStyle().
-			Foreground(colorMuted)
-
-	styleStatus = lipgloss.NewStyle().
-			Foreground(colorAccent).
-			Bold(true)
-
-	styleError = lipgloss.NewStyle().
-			Foreground(colorFiring).
-			Bold(true)
-
-	styleFiring    = lipgloss.NewStyle().Foreground(colorFiring).Bold(true)
-	styleResolved  = lipgloss.NewStyle().Foreground(colorResolved)
-	styleMuted     = lipgloss.NewStyle().Foreground(colorMuted)
-	styleAlertName = lipgloss.NewStyle().Bold(true)
-	styleBold      = lipgloss.NewStyle().Bold(true)
-	styleSelected  = lipgloss.NewStyle().Foreground(colorPrimary).Bold(true)
-	styleAccent    = lipgloss.NewStyle().Foreground(colorAccent)
+	Error     lipgloss.Style
+	Firing    lipgloss.Style
+	Resolved  lipgloss.Style
+	Muted     lipgloss.Style
+	Accent    lipgloss.Style
+	AlertName lipgloss.Style
+	Bold      lipgloss.Style
+	Selected  lipgloss.Style
 
 	// Incident status. Triggered is unclaimed work and reads as loudly as a
 	// firing alert; acknowledged means somebody has it.
-	styleTriggered    = lipgloss.NewStyle().Foreground(colorFiring).Bold(true)
-	styleAcknowledged = lipgloss.NewStyle().Foreground(colorAccent).Bold(true)
-	styleSnoozed      = lipgloss.NewStyle().Foreground(colorMuted).Italic(true)
+	Triggered    lipgloss.Style
+	Acknowledged lipgloss.Style
+	Snoozed      lipgloss.Style
 
 	// Severity, over the conventional Alertmanager label values.
-	styleSevCritical = lipgloss.NewStyle().Foreground(colorSevCritical).Bold(true)
-	styleSevError    = lipgloss.NewStyle().Foreground(colorSevError).Bold(true)
-	styleSevWarning  = lipgloss.NewStyle().Foreground(colorSevWarning)
-	styleSevInfo     = lipgloss.NewStyle().Foreground(colorSevInfo)
-)
+	SevCritical lipgloss.Style
+	SevError    lipgloss.Style
+	SevWarning  lipgloss.Style
+	SevInfo     lipgloss.Style
 
-// severityStyle picks the style for a severity label, falling back to muted for
+	theme theme.Theme
+}
+
+func newStyles(t theme.Theme) Styles {
+	return Styles{
+		Header: lipgloss.NewStyle().
+			Bold(true).
+			Foreground(t.Primary).
+			Padding(0, 1),
+
+		TabActive: lipgloss.NewStyle().
+			Bold(true).
+			Foreground(t.OnPrimary).
+			Background(t.Primary).
+			Padding(0, 2),
+
+		TabInactive: lipgloss.NewStyle().
+			Foreground(t.Muted).
+			Padding(0, 2),
+
+		Footer: lipgloss.NewStyle().Foreground(t.Muted),
+
+		Status: lipgloss.NewStyle().
+			Foreground(t.Accent).
+			Bold(true),
+
+		Error: lipgloss.NewStyle().
+			Foreground(t.Error).
+			Bold(true),
+
+		Firing:    lipgloss.NewStyle().Foreground(t.Firing).Bold(true),
+		Resolved:  lipgloss.NewStyle().Foreground(t.Resolved),
+		Muted:     lipgloss.NewStyle().Foreground(t.Muted),
+		Accent:    lipgloss.NewStyle().Foreground(t.Accent),
+		AlertName: lipgloss.NewStyle().Foreground(t.Text).Bold(true),
+		Bold:      lipgloss.NewStyle().Foreground(t.Text).Bold(true),
+		Selected:  lipgloss.NewStyle().Foreground(t.Primary).Bold(true),
+
+		Triggered:    lipgloss.NewStyle().Foreground(t.Firing).Bold(true),
+		Acknowledged: lipgloss.NewStyle().Foreground(t.Accent).Bold(true),
+		Snoozed:      lipgloss.NewStyle().Foreground(t.Muted).Italic(true),
+
+		SevCritical: lipgloss.NewStyle().Foreground(t.SevCritical).Bold(true),
+		SevError:    lipgloss.NewStyle().Foreground(t.SevError).Bold(true),
+		SevWarning:  lipgloss.NewStyle().Foreground(t.SevWarning),
+		SevInfo:     lipgloss.NewStyle().Foreground(t.SevInfo),
+
+		theme: t,
+	}
+}
+
+// Severity picks the style for a severity label, falling back to muted for
 // values this client does not recognise rather than dropping them.
-func severityStyle(severity string) lipgloss.Style {
+func (s Styles) Severity(severity string) lipgloss.Style {
 	switch strings.ToLower(severity) {
 	case "critical":
-		return styleSevCritical
+		return s.SevCritical
 	case "error":
-		return styleSevError
+		return s.SevError
 	case "warning":
-		return styleSevWarning
+		return s.SevWarning
 	case "info":
-		return styleSevInfo
+		return s.SevInfo
 	default:
-		return styleMuted
+		return s.Muted
 	}
 }
 
-// incidentStatusStyle picks the style for an incident status, falling back to
-// muted for statuses added after this client was built.
-func incidentStatusStyle(status string) lipgloss.Style {
+// IncidentStatus picks the style for an incident status, falling back to muted
+// for statuses added after this client was built.
+func (s Styles) IncidentStatus(status string) lipgloss.Style {
 	switch status {
 	case api.StatusTriggered:
-		return styleTriggered
+		return s.Triggered
 	case api.StatusAcknowledged:
-		return styleAcknowledged
+		return s.Acknowledged
 	case api.StatusResolved:
-		return styleResolved
+		return s.Resolved
 	default:
-		return styleMuted
+		return s.Muted
 	}
 }
+
+// ── Embedded bubbles components ────────────────────────────────────────────
+//
+// Each ships its own hardcoded palette, so a theme that stopped at this
+// package's own styles would leave a pink selected row and grey help text
+// behind. These three restyle them from the same tokens.
+
+// Table styles the six tables. Padding comes from the bubbles defaults; only
+// the colours are ours.
+func (s Styles) Table() table.Styles {
+	ts := table.DefaultStyles()
+	ts.Header = ts.Header.Foreground(s.theme.Muted).Bold(true)
+	// Cell deliberately keeps no foreground: bubbles renders each cell before
+	// wrapping the whole row in Selected, so a colour here would emit a reset
+	// mid-row and cut the selection highlight short.
+	ts.Selected = ts.Selected.
+		Foreground(s.theme.OnPrimary).
+		Background(s.theme.Primary).
+		Bold(true)
+	return ts
+}
+
+// Help styles the key hints in the footer.
+func (s Styles) Help() help.Styles {
+	key := lipgloss.NewStyle().Foreground(s.theme.Text)
+	desc := lipgloss.NewStyle().Foreground(s.theme.Muted)
+	sep := lipgloss.NewStyle().Foreground(s.theme.Muted)
+
+	return help.Styles{
+		Ellipsis:       sep,
+		ShortKey:       key,
+		ShortDesc:      desc,
+		ShortSeparator: sep,
+		FullKey:        key,
+		FullDesc:       desc,
+		FullSeparator:  sep,
+	}
+}
+
+// Input styles a text input and returns it, so NewModel can wrap each one as
+// it is built.
+func (s Styles) Input(ti textinput.Model) textinput.Model {
+	ti.PromptStyle = lipgloss.NewStyle().Foreground(s.theme.Primary)
+	ti.TextStyle = lipgloss.NewStyle().Foreground(s.theme.Text)
+	ti.PlaceholderStyle = lipgloss.NewStyle().Foreground(s.theme.Muted)
+	ti.CompletionStyle = lipgloss.NewStyle().Foreground(s.theme.Muted)
+	ti.Cursor.Style = lipgloss.NewStyle().Foreground(s.theme.Primary)
+	return ti
+}

internal/tui/styles_test.go

@@ -0,0 +1,131 @@
+package tui
+
+import (
+	"testing"
+
+	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
+	"github.com/charmbracelet/bubbles/textinput"
+	"github.com/charmbracelet/lipgloss"
+)
+
+// Assertions here read the colours off the styles rather than off rendered
+// output: under `go test` stdout is not a TTY, so lipgloss strips every escape
+// sequence and rendered strings would all compare equal.
+
+func wantFg(t *testing.T, s lipgloss.Style, want lipgloss.Color, what string) {
+	t.Helper()
+	if got := s.GetForeground(); got != want {
+		t.Errorf("%s foreground = %v, want %v", what, got, want)
+	}
+}
+
+func TestStyles_TokensReachTheStyles(t *testing.T) {
+	th := theme.GruvboxDark
+	s := newStyles(th)
+
+	wantFg(t, s.Header, th.Primary, "header")
+	wantFg(t, s.Firing, th.Firing, "firing")
+	wantFg(t, s.Resolved, th.Resolved, "resolved")
+	wantFg(t, s.Muted, th.Muted, "muted")
+	wantFg(t, s.Status, th.Accent, "status")
+	wantFg(t, s.Error, th.Error, "error")
+	wantFg(t, s.SevWarning, th.SevWarning, "sev warning")
+
+	// The two inverted spots need the pair, not just a foreground.
+	wantFg(t, s.TabActive, th.OnPrimary, "active tab")
+	if got := s.TabActive.GetBackground(); got != th.Primary {
+		t.Errorf("active tab background = %v, want %v", got, th.Primary)
+	}
+
+	// Attributes the old package-level styles carried must survive.
+	if !s.Firing.GetBold() {
+		t.Error("firing lost its bold")
+	}
+	if !s.Snoozed.GetItalic() {
+		t.Error("snoozed lost its italic")
+	}
+	if top, right, bottom, left := s.TabActive.GetPadding(); top != 0 || right != 2 || bottom != 0 || left != 2 {
+		t.Errorf("active tab padding = %d %d %d %d, want 0 2 0 2", top, right, bottom, left)
+	}
+}
+
+func TestStyles_EachBuiltinIsFullyPopulated(t *testing.T) {
+	for _, th := range []theme.Theme{theme.GruvboxDark, theme.GruvboxLight} {
+		s := newStyles(th)
+		for what, style := range map[string]lipgloss.Style{
+			"header": s.Header, "tab inactive": s.TabInactive, "footer": s.Footer,
+			"status": s.Status, "error": s.Error, "firing": s.Firing,
+			"resolved": s.Resolved, "muted": s.Muted, "accent": s.Accent,
+			"alert name": s.AlertName, "bold": s.Bold, "selected": s.Selected,
+			"triggered": s.Triggered, "acknowledged": s.Acknowledged, "snoozed": s.Snoozed,
+			"sev critical": s.SevCritical, "sev error": s.SevError,
+			"sev warning": s.SevWarning, "sev info": s.SevInfo,
+		} {
+			if style.GetForeground() == (lipgloss.NoColor{}) {
+				t.Errorf("%s: %s has no foreground", th.Name, what)
+			}
+		}
+	}
+}
+
+func TestStyles_SeverityFallsBackToMuted(t *testing.T) {
+	s := newStyles(theme.GruvboxDark)
+
+	for _, sev := range []string{"critical", "CRITICAL", "error", "warning", "info"} {
+		if s.Severity(sev).GetForeground() == s.Muted.GetForeground() {
+			t.Errorf("severity %q should have its own colour", sev)
+		}
+	}
+	for _, sev := range []string{"", "page", "unknown"} {
+		if s.Severity(sev).GetForeground() != s.Muted.GetForeground() {
+			t.Errorf("severity %q should fall back to muted", sev)
+		}
+	}
+}
+
+func TestStyles_IncidentStatusFallsBackToMuted(t *testing.T) {
+	s := newStyles(theme.GruvboxDark)
+
+	for _, status := range []string{api.StatusTriggered, api.StatusAcknowledged, api.StatusResolved} {
+		if s.IncidentStatus(status).GetForeground() == s.Muted.GetForeground() {
+			t.Errorf("status %q should have its own colour", status)
+		}
+	}
+	if s.IncidentStatus("invented-later").GetForeground() != s.Muted.GetForeground() {
+		t.Error("an unknown status should fall back to muted")
+	}
+}
+
+// The bubbles components ship their own palettes — a pink selected row, grey
+// help text, a 240 placeholder. These check we replaced them.
+func TestStyles_BubblesComponentsFollowTheTheme(t *testing.T) {
+	th := theme.GruvboxDark
+	s := newStyles(th)
+
+	ts := s.Table()
+	wantFg(t, ts.Selected, th.OnPrimary, "table selection")
+	if got := ts.Selected.GetBackground(); got != th.Primary {
+		t.Errorf("table selection background = %v, want %v", got, th.Primary)
+	}
+	wantFg(t, ts.Header, th.Muted, "table header")
+	if _, right, _, left := ts.Cell.GetPadding(); right != 1 || left != 1 {
+		t.Error("table cell padding was lost")
+	}
+	// A foreground on Cell would emit a reset mid-row and truncate the
+	// selection highlight, so it must stay unset.
+	if ts.Cell.GetForeground() != (lipgloss.NoColor{}) {
+		t.Error("table cells must not carry a foreground")
+	}
+
+	h := s.Help()
+	wantFg(t, h.ShortKey, th.Text, "help key")
+	wantFg(t, h.ShortDesc, th.Muted, "help description")
+	wantFg(t, h.FullSeparator, th.Muted, "help separator")
+
+	in := s.Input(textinput.New())
+	wantFg(t, in.PlaceholderStyle, th.Muted, "input placeholder")
+	wantFg(t, in.TextStyle, th.Text, "input text")
+	wantFg(t, in.PromptStyle, th.Primary, "input prompt")
+	wantFg(t, in.Cursor.Style, th.Primary, "input cursor")
+}

internal/tui/update_test.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	tea "github.com/charmbracelet/bubbletea"
 )
 
@@ -31,7 +32,7 @@ func press(t *testing.T, m Model, key string) (Model, tea.Cmd) {
 
 // sized returns a connected model with a usable window, which most handlers need.
 func sized() Model {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.width, m.height = 120, 40
 	m.connected = true
 	return m
@@ -690,7 +691,7 @@ func containsAll(s string, subs ...string) bool {
 // So this test must NOT touch the cursor. It reproduces the real order of
 // events: size first, data second, keys third.
 func TestSchedule_AssignWeekAfterStartupSizingDoesNotPanic(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.connected = true
 	m.activeSection = sectionSchedule
 	m.scheduleWindow = time.Date(2026, 7, 27, 0, 0, 0, 0, time.UTC)

internal/tui/view.go

@@ -26,8 +26,8 @@ func (m Model) View() string {
 }
 
 func (m Model) renderHeader() string {
-	title := styleHeader.Render("terdut-tui")
-	right := styleMuted.Render(m.serverURL)
+	title := m.styles.Header.Render("terdut-tui")
+	right := m.styles.Muted.Render(m.serverURL)
 	return spread(title, right, m.width)
 }
 
@@ -35,31 +35,31 @@ func (m Model) renderTabs() string {
 	var tabs []string
 	for i, name := range sectionNames {
 		if section(i) == m.activeSection {
-			tabs = append(tabs, styleTabActive.Render(name))
+			tabs = append(tabs, m.styles.TabActive.Render(name))
 		} else {
-			tabs = append(tabs, styleTabInactive.Render(name))
+			tabs = append(tabs, m.styles.TabInactive.Render(name))
 		}
 	}
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
 	return strings.Join(tabs, "") + "\n" + sep
 }
 
 func (m Model) renderBody() string {
 	if m.err != nil {
-		return "\n" + styleError.Render(fmt.Sprintf("  Error: %v", m.err)) +
-			"\n" + styleMuted.Render("  Press r to retry.")
+		return "\n" + m.styles.Error.Render(fmt.Sprintf("  Error: %v", m.err)) +
+			"\n" + m.styles.Muted.Render("  Press r to retry.")
 	}
 	if !m.connected {
-		return "\n" + styleMuted.Render("  Connecting…")
+		return "\n" + m.styles.Muted.Render("  Connecting…")
 	}
 
 	switch m.mode {
 	case modeIncidentDetail, modeAlertDetail:
 		return m.renderDetail()
 	case modeNote:
-		return m.renderPrompt(styleHeader.Render("Note: ") + m.noteInput.View())
+		return m.renderPrompt(m.styles.Header.Render("Note: ") + m.noteInput.View())
 	case modeSnooze:
-		return m.renderPrompt(styleHeader.Render("Snooze for: ") + m.snoozeInput.View())
+		return m.renderPrompt(m.styles.Header.Render("Snooze for: ") + m.snoozeInput.View())
 	case modeConfirm:
 		switch m.confirmTarget {
 		case confirmDeleteNote, confirmResolveIncident:
@@ -90,9 +90,9 @@ func (m Model) renderBody() string {
 
 func (m Model) renderFooter() string {
 	withStatus := func(actions string) string {
-		rendered := styleFooter.Render(actions)
+		rendered := m.styles.Footer.Render(actions)
 		if m.statusMsg != "" {
-			return styleStatus.Render("  "+m.statusMsg) + "\n" + rendered
+			return m.styles.Status.Render("  "+m.statusMsg) + "\n" + rendered
 		}
 		return "\n" + rendered
 	}
@@ -108,13 +108,13 @@ func (m Model) renderFooter() string {
 		return withStatus("  i·open incident  esc·back")
 
 	case modeNote:
-		return "\n" + styleFooter.Render("  enter·submit  esc·cancel")
+		return "\n" + m.styles.Footer.Render("  enter·submit  esc·cancel")
 
 	case modeSnooze:
-		return "\n" + styleFooter.Render("  enter·snooze  esc·cancel   (e.g. 30m, 2h, 24h)")
+		return "\n" + m.styles.Footer.Render("  enter·snooze  esc·cancel   (e.g. 30m, 2h, 24h)")
 
 	case modeConfirm:
-		return "\n" + styleError.Render("  "+m.confirmPrompt())
+		return "\n" + m.styles.Error.Render("  "+m.confirmPrompt())
 
 	case modeUserPicker:
 		if m.pickerTarget == pickerIncidentAssignee {
@@ -159,7 +159,7 @@ func (m Model) renderFooter() string {
 		case sectionUsers:
 			return withStatus("  n·new user  t·topic  d·delete  k·API keys  r·refresh  tab·section  q·quit")
 		}
-		return "\n" + styleFooter.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
+		return "\n" + m.styles.Footer.Render(m.help.ShortHelpView(m.keys.ShortHelp()))
 	}
 }
 
@@ -241,9 +241,9 @@ func (m Model) renderIncidents() string {
 	var content string
 	switch {
 	case m.loading && len(m.incidents) == 0:
-		content = styleMuted.Render("  Loading incidents…")
+		content = m.styles.Muted.Render("  Loading incidents…")
 	case len(m.incidents) == 0:
-		content = styleMuted.Render(
+		content = m.styles.Muted.Render(
 			fmt.Sprintf("  No %s incidents.", filterLabel(m.incidentFilter)))
 	default:
 		content = m.incidentTable.View()
@@ -256,9 +256,9 @@ func (m Model) renderAlerts() string {
 	var content string
 	switch {
 	case m.loading && len(m.alerts) == 0:
-		content = styleMuted.Render("  Loading alerts…")
+		content = m.styles.Muted.Render("  Loading alerts…")
 	case len(m.alerts) == 0:
-		content = styleMuted.Render(fmt.Sprintf("  No %s alerts.", filterLabel(m.alertFilter)))
+		content = m.styles.Muted.Render(fmt.Sprintf("  No %s alerts.", filterLabel(m.alertFilter)))
 	default:
 		content = m.alertTable.View()
 	}
@@ -267,10 +267,10 @@ func (m Model) renderAlerts() string {
 
 func (m Model) renderArchived() string {
 	if m.archivedLoading {
-		return "\n" + styleMuted.Render("  Loading archived incidents…")
+		return "\n" + m.styles.Muted.Render("  Loading archived incidents…")
 	}
 	if len(m.archivedIncidents) == 0 {
-		return "\n" + styleMuted.Render("  No archived incidents.")
+		return "\n" + m.styles.Muted.Render("  No archived incidents.")
 	}
 	return "\n" + m.archivedTable.View()
 }
@@ -286,12 +286,12 @@ func (m Model) renderIncidentStatsBar() string {
 		mttr = humanSeconds(m.incidentStats.MTTRSeconds)
 	}
 	left := fmt.Sprintf("  %s  %s  %s   %s",
-		styleTriggered.Render(fmt.Sprintf("Triggered: %d", triggered)),
-		styleAcknowledged.Render(fmt.Sprintf("Acked: %d", acked)),
-		styleResolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
-		styleMuted.Render(fmt.Sprintf("MTTA %s · MTTR %s", mtta, mttr)),
+		m.styles.Triggered.Render(fmt.Sprintf("Triggered: %d", triggered)),
+		m.styles.Acknowledged.Render(fmt.Sprintf("Acked: %d", acked)),
+		m.styles.Resolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
+		m.styles.Muted.Render(fmt.Sprintf("MTTA %s · MTTR %s", mtta, mttr)),
 	)
-	right := styleMuted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.incidentFilter)))
+	right := m.styles.Muted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.incidentFilter)))
 	return spread(left, right, m.width)
 }
 
@@ -304,10 +304,10 @@ func (m Model) renderAlertStatsBar() string {
 	}
 	left := fmt.Sprintf("  Total: %d  %s  %s",
 		total,
-		styleFiring.Render(fmt.Sprintf("Firing: %d", firing)),
-		styleResolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
+		m.styles.Firing.Render(fmt.Sprintf("Firing: %d", firing)),
+		m.styles.Resolved.Render(fmt.Sprintf("Resolved: %d", resolved)),
 	)
-	right := styleMuted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.alertFilter)))
+	right := m.styles.Muted.Render(fmt.Sprintf("filter: %s  [f]  ", filterLabel(m.alertFilter)))
 	return spread(left, right, m.width)
 }
 
@@ -324,20 +324,20 @@ func spread(left, right string, width int) string {
 
 func (m Model) renderSchedule() string {
 	if m.scheduleLoading {
-		return "\n" + styleMuted.Render("  Loading schedule…")
+		return "\n" + m.styles.Muted.Render("  Loading schedule…")
 	}
 
 	var onCallLine string
 	if m.currentOnCall != nil {
 		onCallLine = fmt.Sprintf("  On-call today: %s",
-			styleAlertName.Render(m.currentOnCall.Username))
+			m.styles.AlertName.Render(m.currentOnCall.Username))
 	} else {
-		onCallLine = styleMuted.Render("  On-call today: nobody scheduled")
+		onCallLine = m.styles.Muted.Render("  On-call today: nobody scheduled")
 	}
 
 	from := m.scheduleWindow
 	to := m.scheduleWindow.AddDate(0, 0, 6)
-	windowLabel := styleMuted.Render(fmt.Sprintf("  %s — %s",
+	windowLabel := m.styles.Muted.Render(fmt.Sprintf("  %s — %s",
 		from.Format("Jan 02"), to.Format("Jan 02, 2006")))
 
 	header := "\n" + spread(onCallLine, windowLabel, m.width) + "\n"
@@ -346,12 +346,12 @@ func (m Model) renderSchedule() string {
 
 func (m Model) renderUserPicker() string {
 	if m.usersLoading {
-		return "\n" + styleMuted.Render("  Loading users…")
+		return "\n" + m.styles.Muted.Render("  Loading users…")
 	}
 
 	if m.pickerTarget == pickerIncidentAssignee {
 		header := fmt.Sprintf("\n  Assign %s to:\n\n",
-			styleBold.Render(m.selectedIncident.Title))
+			m.styles.Bold.Render(m.selectedIncident.Title))
 		return header + m.userPickerTable.View()
 	}
 
@@ -376,7 +376,7 @@ func (m Model) renderUserPicker() string {
 		}
 	}
 
-	header := fmt.Sprintf("\n  Assign on-call for %s — select a user:\n\n", styleBold.Render(scope))
+	header := fmt.Sprintf("\n  Assign on-call for %s — select a user:\n\n", m.styles.Bold.Render(scope))
 	return header + m.userPickerTable.View()
 }
 
@@ -384,14 +384,14 @@ func (m Model) renderUserPicker() string {
 
 func (m Model) renderDetail() string {
 	if m.detailLoading {
-		return "\n" + styleMuted.Render("  Loading…")
+		return "\n" + m.styles.Muted.Render("  Loading…")
 	}
 	return m.detailViewport.View()
 }
 
 // renderPrompt puts an input line under the detail pane.
 func (m Model) renderPrompt(prompt string) string {
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
 	return m.detailViewport.View() + "\n" + sep + "\n" + prompt
 }
 
@@ -401,7 +401,7 @@ func (m Model) renderStats() string {
 	// Only announce loading before the first result: a background refresh must not
 	// blank the page out from under whoever is reading it.
 	if m.statsLoading && !m.statsLoaded {
-		return "\n" + styleMuted.Render("  Loading statistics…")
+		return "\n" + m.styles.Muted.Render("  Loading statistics…")
 	}
 	return m.statsViewport.View()
 }
@@ -418,16 +418,16 @@ func line(style lipgloss.Style, s string) string {
 
 // ── Content builders ───────────────────────────────────────────────────────
 
-func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
+func buildIncidentDetailContent(s Styles, inc api.Incident, timeline []api.IncidentEvent, cursor, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
 
 	// Title + status header
-	title := styleAlertName.Render(inc.Title)
-	status := incidentStatusStyle(inc.Status).Render(incidentStatusLabel(inc))
+	title := s.AlertName.Render(inc.Title)
+	status := s.IncidentStatus(inc.Status).Render(incidentStatusLabel(inc))
 	if inc.Severity != "" {
-		status += "  " + severityStyle(inc.Severity).Render(strings.ToUpper(inc.Severity))
+		status += "  " + s.Severity(inc.Severity).Render(strings.ToUpper(inc.Severity))
 	}
 	gap := contentW - lipgloss.Width(title) - lipgloss.Width(status)
 	if gap < 1 {
@@ -440,9 +440,9 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 		inc.TriggeredAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, inc.TriggeredAt)))
 
 	if inc.AssignedTo != "" {
-		b.WriteString(fmt.Sprintf("  Assigned:   %s\n", styleBold.Render(inc.AssignedTo)))
+		b.WriteString(fmt.Sprintf("  Assigned:   %s\n", s.Bold.Render(inc.AssignedTo)))
 	} else {
-		b.WriteString(line(styleMuted, "  Assigned:   nobody"))
+		b.WriteString(line(s.Muted, "  Assigned:   nobody"))
 	}
 
 	if inc.AcknowledgedByID != nil {
@@ -450,14 +450,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 		if inc.AcknowledgedAt != nil {
 			ackAt = "  at " + inc.AcknowledgedAt.UTC().Format("2006-01-02 15:04 UTC")
 		}
-		b.WriteString(line(styleResolved,
+		b.WriteString(line(s.Resolved,
 			fmt.Sprintf("  Acked:      %s%s", inc.AcknowledgedBy, ackAt)))
 	} else {
-		b.WriteString(line(styleMuted, "  Acked:      not acknowledged"))
+		b.WriteString(line(s.Muted, "  Acked:      not acknowledged"))
 	}
 
 	if inc.IsSnoozed() {
-		b.WriteString(line(styleSnoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
+		b.WriteString(line(s.Snoozed, fmt.Sprintf("  Snoozed:    until %s  (%s)",
 			inc.SnoozedUntil.UTC().Format("2006-01-02 15:04 UTC"), humanUntil(now, *inc.SnoozedUntil))))
 	}
 
@@ -470,14 +470,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 			inc.ResolvedAt.UTC().Format("2006-01-02 15:04 UTC"), humanAgo(now, *inc.ResolvedAt), source))
 	}
 	if inc.ArchivedAt != nil {
-		b.WriteString(line(styleMuted, "  Archived:   "+
+		b.WriteString(line(s.Muted, "  Archived:   "+
 			inc.ArchivedAt.UTC().Format("2006-01-02 15:04 UTC")))
 	}
 	b.WriteString("\n")
 
 	// Group labels — the correlation Alertmanager applied.
 	if len(inc.GroupLabels) > 0 {
-		b.WriteString(divider("Grouped By", width))
+		b.WriteString(divider(s, "Grouped By", width))
 		for _, k := range sortedKeys(inc.GroupLabels) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(inc.GroupLabels[k], contentW-24)))
 		}
@@ -485,14 +485,14 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 	}
 
 	// Member alerts
-	b.WriteString(divider(fmt.Sprintf("Alerts (%d)", len(inc.Alerts)), width))
+	b.WriteString(divider(s, fmt.Sprintf("Alerts (%d)", len(inc.Alerts)), width))
 	if len(inc.Alerts) == 0 {
-		b.WriteString(line(styleMuted, "  No alerts."))
+		b.WriteString(line(s.Muted, "  No alerts."))
 	} else {
 		for _, a := range inc.Alerts {
-			marker := styleFiring.Render("●")
+			marker := s.Firing.Render("●")
 			if a.Status != "firing" {
-				marker = styleResolved.Render("✓")
+				marker = s.Resolved.Render("✓")
 			}
 			instance := a.Labels["instance"]
 			if instance == "" {
@@ -500,29 +500,29 @@ func buildIncidentDetailContent(inc api.Incident, timeline []api.IncidentEvent,
 			}
 			b.WriteString(fmt.Sprintf("  %s %-28s %-26s %s\n",
 				marker, truncate(a.Name, 28), truncate(instance, 26),
-				styleMuted.Render("last seen "+humanAgo(now, a.ReceivedAt))))
+				s.Muted.Render("last seen "+humanAgo(now, a.ReceivedAt))))
 		}
 	}
 	b.WriteString("\n")
 
 	// Timeline — the only history the server keeps.
 	notes := noteEvents(timeline)
-	b.WriteString(divider(fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
+	b.WriteString(divider(s, fmt.Sprintf("Timeline (%d events, %d notes)", len(timeline), len(notes)), width))
 	if len(timeline) == 0 {
-		b.WriteString(line(styleMuted, "  Nothing recorded yet."))
+		b.WriteString(line(s.Muted, "  Nothing recorded yet."))
 	} else {
 		noteIndex := 0
 		for _, e := range timeline {
-			when := styleMuted.Render(humanAgo(now, e.CreatedAt))
+			when := s.Muted.Render(humanAgo(now, e.CreatedAt))
 			if e.Type != api.EventNote {
 				b.WriteString(fmt.Sprintf("  %-52s %s\n", eventLabel(e), when))
 				continue
 			}
 			marker := "  "
-			author := styleBold.Render(e.Username)
+			author := s.Bold.Render(e.Username)
 			if noteIndex == cursor {
-				marker = styleSelected.Render("> ")
-				author = styleSelected.Render(e.Username)
+				marker = s.Selected.Render("> ")
+				author = s.Selected.Render(e.Username)
 			}
 			b.WriteString(fmt.Sprintf("%s%-50s %s\n", marker, author+" wrote", when))
 			b.WriteString("    " + e.Detail + "\n")
@@ -626,21 +626,21 @@ func notifyKind(detail string) string {
 	return " (" + detail + ")"
 }
 
-func buildAlertDetailContent(alert api.Alert, width int) string {
+func buildAlertDetailContent(s Styles, alert api.Alert, width int) string {
 	now := time.Now()
 	var b strings.Builder
 	contentW := width - 4
 
-	name := styleAlertName.Render(alert.Name)
+	name := s.AlertName.Render(alert.Name)
 	var statusStr string
 	if alert.Status == "firing" {
-		statusStr = styleFiring.Render("● FIRING")
+		statusStr = s.Firing.Render("● FIRING")
 	} else {
 		label := "✓ RESOLVED"
 		if alert.ResolutionSource != nil {
 			label += " · " + *alert.ResolutionSource
 		}
-		statusStr = styleResolved.Render(label)
+		statusStr = s.Resolved.Render(label)
 	}
 	gap := contentW - lipgloss.Width(name) - lipgloss.Width(statusStr)
 	if gap < 1 {
@@ -660,15 +660,15 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 	if alert.IncidentID != nil {
 		b.WriteString(fmt.Sprintf("  Incident:   %s   %s\n",
-			styleBold.Render(fmt.Sprintf("#%d", *alert.IncidentID)),
-			styleMuted.Render("press i to open it")))
+			s.Bold.Render(fmt.Sprintf("#%d", *alert.IncidentID)),
+			s.Muted.Render("press i to open it")))
 	} else {
-		b.WriteString(line(styleMuted, "  Incident:   none"))
+		b.WriteString(line(s.Muted, "  Incident:   none"))
 	}
 	b.WriteString("\n")
 
 	if len(alert.Labels) > 0 {
-		b.WriteString(divider("Labels", width))
+		b.WriteString(divider(s, "Labels", width))
 		for _, k := range sortedKeys(alert.Labels) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(alert.Labels[k], contentW-24)))
 		}
@@ -676,7 +676,7 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 
 	if len(alert.Annotations) > 0 {
-		b.WriteString(divider("Annotations", width))
+		b.WriteString(divider(s, "Annotations", width))
 		for _, k := range sortedKeys(alert.Annotations) {
 			b.WriteString(fmt.Sprintf("  %-22s %s\n", k, truncate(alert.Annotations[k], contentW-24)))
 		}
@@ -684,14 +684,14 @@ func buildAlertDetailContent(alert api.Alert, width int) string {
 	}
 
 	// Alerts carry no workflow state: it all lives on the incident.
-	b.WriteString(divider("", width))
-	b.WriteString(line(styleMuted,
+	b.WriteString(divider(s, "", width))
+	b.WriteString(line(s.Muted,
 		"  Alerts are read-only — acknowledge, assign, note and resolve on the incident."))
 
 	return b.String()
 }
 
-func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour []api.HourStat, byDay []api.DayStat, width int) string {
+func buildStatsContent(s Styles, incidents *api.IncidentStats, top []api.TopAlert, byHour []api.HourStat, byDay []api.DayStat, width int) string {
 	barWidth := width/2 - 10
 	if barWidth < 8 {
 		barWidth = 8
@@ -704,41 +704,41 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 	b.WriteString("\n")
 
 	// Response times first: they are what a rota is actually judged on.
-	b.WriteString(divider("Incident Response", width))
+	b.WriteString(divider(s, "Incident Response", width))
 	if incidents == nil {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	} else {
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Incidents total",
-			styleBold.Render(fmt.Sprintf("%d", incidents.Total))))
+			s.Bold.Render(fmt.Sprintf("%d", incidents.Total))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Triggered",
-			styleTriggered.Render(fmt.Sprintf("%d", incidents.Triggered))))
+			s.Triggered.Render(fmt.Sprintf("%d", incidents.Triggered))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Acknowledged",
-			styleAcknowledged.Render(fmt.Sprintf("%d", incidents.Acknowledged))))
+			s.Acknowledged.Render(fmt.Sprintf("%d", incidents.Acknowledged))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Resolved",
-			styleResolved.Render(fmt.Sprintf("%d", incidents.Resolved))))
+			s.Resolved.Render(fmt.Sprintf("%d", incidents.Resolved))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Mean time to acknowledge",
-			styleBold.Render(humanSeconds(incidents.MTTASeconds))))
+			s.Bold.Render(humanSeconds(incidents.MTTASeconds))))
 		b.WriteString(fmt.Sprintf("  %-28s %s\n", "Mean time to resolve",
-			styleBold.Render(humanSeconds(incidents.MTTRSeconds))))
+			s.Bold.Render(humanSeconds(incidents.MTTRSeconds))))
 		if incidents.MTTASeconds == nil || incidents.MTTRSeconds == nil {
-			b.WriteString(line(styleMuted, "  (— means nothing has been acknowledged or resolved yet)"))
+			b.WriteString(line(s.Muted, "  (— means nothing has been acknowledged or resolved yet)"))
 		}
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Top Alerts", width))
+	b.WriteString(divider(s, "Top Alerts", width))
 	if len(top) == 0 {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	} else {
 		maxCount := top[0].Count
 		for i, a := range top {
-			bar := styleResolved.Render(strings.Repeat("█", renderBarWidth(a.Count, maxCount, barWidth)))
+			bar := s.Resolved.Render(strings.Repeat("█", renderBarWidth(a.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %2d. %-30s %s %d\n", i+1, truncate(a.Name, 30), bar, a.Count))
 		}
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Alerts by Hour (UTC)", width))
+	b.WriteString(divider(s, "Alerts by Hour (UTC)", width))
 	if len(byHour) > 0 {
 		maxCount := 0
 		for _, h := range byHour {
@@ -747,15 +747,15 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 			}
 		}
 		for _, h := range byHour {
-			bar := styleFiring.Render(strings.Repeat("█", renderBarWidth(h.Count, maxCount, barWidth)))
+			bar := s.Firing.Render(strings.Repeat("█", renderBarWidth(h.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %2dh  %-*s %d\n", h.Hour, barWidth, bar, h.Count))
 		}
 	} else {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	}
 	b.WriteString("\n")
 
-	b.WriteString(divider("Alerts by Day", width))
+	b.WriteString(divider(s, "Alerts by Day", width))
 	if len(byDay) > 0 {
 		maxCount := 0
 		for _, d := range byDay {
@@ -764,11 +764,11 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 			}
 		}
 		for _, d := range byDay {
-			bar := styleAccent.Render(strings.Repeat("█", renderBarWidth(d.Count, maxCount, barWidth)))
+			bar := s.Accent.Render(strings.Repeat("█", renderBarWidth(d.Count, maxCount, barWidth)))
 			b.WriteString(fmt.Sprintf("  %-4s  %-*s %d\n", d.DayName[:3], barWidth, bar, d.Count))
 		}
 	} else {
-		b.WriteString(line(styleMuted, "  No data."))
+		b.WriteString(line(s.Muted, "  No data."))
 	}
 
 	return b.String()
@@ -778,22 +778,22 @@ func buildStatsContent(incidents *api.IncidentStats, top []api.TopAlert, byHour
 
 func (m Model) renderUsers() string {
 	if m.usersLoading {
-		return "\n" + styleMuted.Render("  Loading users…")
+		return "\n" + m.styles.Muted.Render("  Loading users…")
 	}
 	if len(m.users) == 0 {
-		return "\n" + styleMuted.Render("  No users found. Press n to create one.")
+		return "\n" + m.styles.Muted.Render("  No users found. Press n to create one.")
 	}
 	return "\n" + m.userManageTable.View()
 }
 
 func (m Model) renderUserCreate() string {
-	header := "\n  " + styleBold.Render("Create new user") + "\n\n"
+	header := "\n  " + m.styles.Bold.Render("Create new user") + "\n\n"
 	usernameLabel := "  Username:  "
 	emailLabel := "  Email:     "
 	if m.userFormFocus == 0 {
-		usernameLabel = styleSelected.Render("  Username:  ")
+		usernameLabel = m.styles.Selected.Render("  Username:  ")
 	} else {
-		emailLabel = styleSelected.Render("  Email:     ")
+		emailLabel = m.styles.Selected.Render("  Email:     ")
 	}
 	return header +
 		usernameLabel + m.userFormInputs[0].View() + "\n" +
@@ -801,59 +801,59 @@ func (m Model) renderUserCreate() string {
 }
 
 func (m Model) renderUserNotifyEdit() string {
-	header := fmt.Sprintf("\n  Push notifications for %s\n", styleBold.Render(m.selectedUser.Username))
-	hint := line(styleMuted,
+	header := fmt.Sprintf("\n  Push notifications for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
+	hint := line(m.styles.Muted,
 		"  The ntfy topic this user's pages go to. Leave it empty to clear it —\n"+
 			"  their incidents then page the server's shared fallback topic, which\n"+
 			"  carries no Acknowledge button.")
-	label := styleSelected.Render("  Topic:  ")
+	label := m.styles.Selected.Render("  Topic:  ")
 	return header + "\n" + hint + "\n" + label + m.ntfyTopicInput.View() + "\n"
 }
 
 func (m Model) renderAPIKeyMenu() string {
-	header := fmt.Sprintf("\n  API keys for %s\n", styleBold.Render(m.selectedUser.Username))
-	warning := line(styleMuted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")
+	header := fmt.Sprintf("\n  API keys for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
+	warning := line(m.styles.Muted, "  Keys cannot be listed — only new keys can be created,\n  or existing ones revoked by their integer ID.")
 	options := "\n" +
-		styleAccent.Render("  n") + "  · create a new API key\n" +
-		styleAccent.Render("  r") + "  · revoke a key by ID\n"
+		m.styles.Accent.Render("  n") + "  · create a new API key\n" +
+		m.styles.Accent.Render("  r") + "  · revoke a key by ID\n"
 	return header + "\n" + warning + options
 }
 
 func (m Model) renderAPIKeyCreate() string {
-	header := fmt.Sprintf("\n  New API key for %s\n\n", styleBold.Render(m.selectedUser.Username))
-	label := styleSelected.Render("  Key name:  ")
+	header := fmt.Sprintf("\n  New API key for %s\n\n", m.styles.Bold.Render(m.selectedUser.Username))
+	label := m.styles.Selected.Render("  Key name:  ")
 	return header + label + m.apiKeyNameInput.View() + "\n"
 }
 
 func (m Model) renderAPIKeyReveal() string {
-	sep := styleMuted.Render(strings.Repeat("─", m.width))
-	warn := styleError.Render("  !! COPY NOW — this key will NEVER be shown again !!")
-	nameLine := fmt.Sprintf("  Key name:  %s", styleBold.Render(m.revealedAPIKey.Name))
+	sep := m.styles.Muted.Render(strings.Repeat("─", m.width))
+	warn := m.styles.Error.Render("  !! COPY NOW — this key will NEVER be shown again !!")
+	nameLine := fmt.Sprintf("  Key name:  %s", m.styles.Bold.Render(m.revealedAPIKey.Name))
 	idLine := fmt.Sprintf("  Key ID:    %s   %s",
-		styleBold.Render(fmt.Sprintf("%d", m.revealedAPIKey.ID)),
-		styleMuted.Render("(save this — needed for future revocation)"))
+		m.styles.Bold.Render(fmt.Sprintf("%d", m.revealedAPIKey.ID)),
+		m.styles.Muted.Render("(save this — needed for future revocation)"))
 
-	keyLine := styleResolved.Render("  " + m.revealedAPIKey.Key)
+	keyLine := m.styles.Resolved.Render("  " + m.revealedAPIKey.Key)
 
 	return "\n" + sep + "\n\n" +
 		warn + "\n\n" +
 		nameLine + "\n" +
 		idLine + "\n\n" +
-		styleMuted.Render("  Key value:") + "\n" +
+		m.styles.Muted.Render("  Key value:") + "\n" +
 		keyLine + "\n\n" +
 		sep + "\n"
 }
 
 func (m Model) renderAPIKeyRevokeByID() string {
-	header := fmt.Sprintf("\n  Revoke API key for %s\n", styleBold.Render(m.selectedUser.Username))
-	hint := line(styleMuted, "  Enter the integer key ID (shown when the key was created).")
-	label := styleSelected.Render("  Key ID:  ")
+	header := fmt.Sprintf("\n  Revoke API key for %s\n", m.styles.Bold.Render(m.selectedUser.Username))
+	hint := line(m.styles.Muted, "  Enter the integer key ID (shown when the key was created).")
+	label := m.styles.Selected.Render("  Key ID:  ")
 	return header + "\n" + hint + "\n" + label + m.apiKeyRevokeInput.View() + "\n"
 }
 
 // ── Helpers ────────────────────────────────────────────────────────────────
 
-func divider(title string, width int) string {
+func divider(s Styles, title string, width int) string {
 	prefix := "── "
 	if title != "" {
 		prefix += title + " "
@@ -862,7 +862,7 @@ func divider(title string, width int) string {
 	if remaining > 0 {
 		prefix += strings.Repeat("─", remaining)
 	}
-	return styleMuted.Render(prefix) + "\n"
+	return s.Muted.Render(prefix) + "\n"
 }
 
 func sortedKeys(m map[string]string) []string {

internal/tui/view_test.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"git.ryuvia.com/niklas/terdut-tui/internal/api"
+	"git.ryuvia.com/niklas/terdut-tui/internal/theme"
 	tea "github.com/charmbracelet/bubbletea"
 )
 
@@ -16,6 +17,10 @@ var ansi = regexp.MustCompile(`\x1b\[[0-9;]*m`)
 
 func plain(s string) string { return ansi.ReplaceAllString(s, "") }
 
+// testStyles is the default theme, so assertions here run against what a user
+// with no 'theme:' key actually sees.
+func testStyles() Styles { return newStyles(theme.GruvboxDark) }
+
 func mustContain(t *testing.T, got string, wants ...string) {
 	t.Helper()
 	got = plain(got)
@@ -52,7 +57,7 @@ func TestIncidentDetail_RendersTheWholeStory(t *testing.T) {
 		{Type: api.EventNote, Username: "admin", Detail: "draining node-2", CreatedAt: now},
 	}
 
-	out := buildIncidentDetailContent(inc, timeline, -1, 110)
+	out := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 110)
 	mustContain(t, out,
 		"DiskFull (namespace=prod)", "ACKNOWLEDGED", "CRITICAL",
 		"Assigned:", "admin",
@@ -72,7 +77,7 @@ func TestIncidentDetail_ShowsSnooze(t *testing.T) {
 	}
 	// The exact remaining time is humanUntil's business, not this test's — a few
 	// microseconds of elapsed clock turn "in 2h" into "in 1h 59m".
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
 		"TRIGGERED (snoozed)", "Snoozed:", "until", "in 1h")
 }
 
@@ -83,7 +88,7 @@ func TestIncidentDetail_HidesExpiredSnooze(t *testing.T) {
 		Title: "Noisy", Status: api.StatusTriggered,
 		TriggeredAt: time.Now(), SnoozedUntil: &past,
 	}
-	if strings.Contains(plain(buildIncidentDetailContent(inc, nil, -1, 110)), "Snoozed:") {
+	if strings.Contains(plain(buildIncidentDetailContent(testStyles(), inc, nil, -1, 110)), "Snoozed:") {
 		t.Error("an expired snooze should not be rendered")
 	}
 }
@@ -95,18 +100,18 @@ func TestIncidentDetail_ShowsResolutionSource(t *testing.T) {
 		Title: "Done", Status: api.StatusResolved, TriggeredAt: now.Add(-time.Hour),
 		ResolvedAt: &now, ResolutionSource: &source,
 	}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110),
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110),
 		"RESOLVED", "Resolved:", "manual")
 }
 
 func TestIncidentDetail_UnassignedAndUnacknowledged(t *testing.T) {
 	inc := api.Incident{Title: "Fresh", Status: api.StatusTriggered, TriggeredAt: time.Now()}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110), "nobody", "not acknowledged")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110), "nobody", "not acknowledged")
 }
 
 func TestIncidentDetail_EmptyTimeline(t *testing.T) {
 	inc := api.Incident{Title: "Fresh", Status: api.StatusTriggered, TriggeredAt: time.Now()}
-	mustContain(t, buildIncidentDetailContent(inc, nil, -1, 110), "Nothing recorded yet")
+	mustContain(t, buildIncidentDetailContent(testStyles(), inc, nil, -1, 110), "Nothing recorded yet")
 }
 
 func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
@@ -117,7 +122,7 @@ func TestIncidentDetail_MarksSelectedNote(t *testing.T) {
 	}
 	inc := api.Incident{Title: "X", Status: api.StatusTriggered, TriggeredAt: now}
 
-	out := plain(buildIncidentDetailContent(inc, timeline, 1, 110))
+	out := plain(buildIncidentDetailContent(testStyles(), inc, timeline, 1, 110))
 	for _, line := range strings.Split(out, "\n") {
 		if strings.Contains(line, "alice") && !strings.HasPrefix(line, "> ") {
 			t.Errorf("expected the selected note marked, got %q", line)
@@ -207,7 +212,7 @@ func TestIncidentDetail_RendersNotifications(t *testing.T) {
 			Detail: "reminder: ntfy returned 502", CreatedAt: now},
 	}
 
-	got := buildIncidentDetailContent(inc, timeline, -1, 120)
+	got := buildIncidentDetailContent(testStyles(), inc, timeline, -1, 120)
 	mustContain(t, got, "Notified niklas (triggered)", "Notification to niklas failed")
 }
 
@@ -230,7 +235,7 @@ func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 		Labels:      map[string]string{"instance": "node-1", "severity": "critical"},
 		Annotations: map[string]string{"summary": "disk 90%"},
 	}
-	mustContain(t, buildAlertDetailContent(alert, 110),
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110),
 		"DiskFull", "FIRING", "Incident:", "#7", "press i to open it",
 		"instance", "node-1", "summary", "disk 90%",
 		"Alerts are read-only")
@@ -238,21 +243,21 @@ func TestAlertDetail_SaysItIsReadOnlyAndLinksTheIncident(t *testing.T) {
 
 func TestAlertDetail_NoIncident(t *testing.T) {
 	alert := api.Alert{ID: 3, Name: "Orphan", Status: "resolved", ReceivedAt: time.Now()}
-	mustContain(t, buildAlertDetailContent(alert, 110), "Incident:", "none")
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110), "Incident:", "none")
 }
 
 func TestAlertDetail_ShowsResolutionSource(t *testing.T) {
 	source := "expiry"
 	alert := api.Alert{Name: "Gone", Status: "resolved", ReceivedAt: time.Now(),
 		ResolutionSource: &source}
-	mustContain(t, buildAlertDetailContent(alert, 110), "RESOLVED", "expiry")
+	mustContain(t, buildAlertDetailContent(testStyles(), alert, 110), "RESOLVED", "expiry")
 }
 
 // Null MTTA means nothing has been acknowledged, which is a different claim
 // from an instant response.
 func TestStats_RendersDashForMissingAverages(t *testing.T) {
 	stats := &api.IncidentStats{Total: 2, Triggered: 2}
-	out := buildStatsContent(stats, nil, nil, nil, 110)
+	out := buildStatsContent(testStyles(), stats, nil, nil, nil, 110)
 	mustContain(t, out, "Incident Response", "Mean time to acknowledge", "—",
 		"nothing has been acknowledged or resolved yet")
 }
@@ -260,12 +265,12 @@ func TestStats_RendersDashForMissingAverages(t *testing.T) {
 func TestStats_RendersAverages(t *testing.T) {
 	mtta, mttr := 150.0, 3600.0
 	stats := &api.IncidentStats{Total: 3, Resolved: 1, MTTASeconds: &mtta, MTTRSeconds: &mttr}
-	out := buildStatsContent(stats, []api.TopAlert{{Name: "DiskFull", Count: 4}}, nil, nil, 110)
+	out := buildStatsContent(testStyles(), stats, []api.TopAlert{{Name: "DiskFull", Count: 4}}, nil, nil, 110)
 	mustContain(t, out, "2m", "1h", "Top Alerts", "DiskFull")
 }
 
 func TestStats_HandlesNoIncidentData(t *testing.T) {
-	mustContain(t, buildStatsContent(nil, nil, nil, nil, 110), "Incident Response", "No data")
+	mustContain(t, buildStatsContent(testStyles(), nil, nil, nil, nil, 110), "Incident Response", "No data")
 }
 
 func TestView_TabsAndDashboardRender(t *testing.T) {
@@ -296,7 +301,7 @@ func TestView_EmptyStates(t *testing.T) {
 // The stats page renders inside the normal section chrome now, so it has to
 // survive the real path: a window size message sizes the viewport and fills it.
 func TestView_StatsSectionRendersInPlace(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	m.connected = true
 	m.incidentStats = &api.IncidentStats{Total: 3, Triggered: 1}
 	m.topAlerts = []api.TopAlert{{Name: "DiskFull", Count: 4}}
@@ -335,7 +340,7 @@ func TestFooter_IncidentDetailOffersResolveOnlyWhileOpen(t *testing.T) {
 }
 
 func TestView_ZeroWidthRendersNothing(t *testing.T) {
-	m := NewModel(nil, "http://test", time.Minute)
+	m := NewModel(nil, "http://test", time.Minute, theme.GruvboxDark)
 	if m.View() != "" {
 		t.Error("expected no output before the first window size message")
 	}