Themes
Themes administration tasks.

Overview
The Themes page in Admin > Themes controls host-name based branding for the MiRTA PBX web interface. A theme can change the selected UI package, Smartadmin layout behavior, logos, login-page text, menu additions, custom templates, and switchboard access behavior.
Each theme is selected by matching the requested web host against Server Name Regex. Keep the most specific host patterns for branded domains and use a broad expression only for the default theme.
Themes list with fictional documentation theme entries.
Working with themes
Action
Explanation
Create
Use New Theme from the Themes list, complete the host pattern and branding fields, then save.
Edit
Select a theme from the list by clicking the server-name regex, theme name, or title.
Duplicate
Use the duplicate action when a new branded domain should start from an existing theme.
Delete
Delete only unused themes. Removing the active catch-all theme can leave the login page without the expected branding.
Validate host matching
Test each branded hostname after saving. Regex patterns are powerful, so a broad expression can unintentionally match more hostnames than expected.
Theme editor
The editor is split into sections. The screenshots use fictional documentation values and should not be saved directly on a production system.
Theme editor identity and Smartadmin layout options with fictional values.
Theme editor customization and login-page fields with fictional values.
Theme editor switchboard link and favicon options with fictional values.
Field reference
Field
Description
Server Name Regex
Matches the HTTP host name that should use this theme. Use a precise expression for a branded domain, or a broad expression only for a catch-all default theme.
Theme
Selects the installed UI theme package. The standard value is smartadmin.
Fixed header
Keeps the page header visible while scrolling.
Fixed navigation
Keeps the navigation panel fixed while page content scrolls.
Menu on top
Moves the main navigation from the side panel to a horizontal top menu.
Push content
Pushes page content when the mobile navigation is opened.
Force RTL (Right to Left)
Forces right-to-left layout for languages or deployments that require it.
Boxed layout
Constrains the page width instead of using the full browser width.
Hidden Menu
Collapses the navigation until the user hovers over the visible navigation area.
Minify Menu
Shows a compact icon-oriented navigation menu.
Bigger Font
Increases the interface font size.
Skin
Chooses the Smartadmin skin, such as light, default, or dark.
Color
Applies one of the predefined Smartadmin color themes or a custom color file.
Other Body Classes
Adds extra Smartadmin body classes for advanced layout customization.
Provisioning host name
Overrides the host name shown in provisioning-related pages and generated provisioning links. Leave empty to inherit the configured host.
Title
Sets the browser tab title. Enable Smart to append page-specific information.
Top Title
Sets the title shown in the top application area. HTML can be used for custom branding when needed.
Bottom message
Sets the footer or bottom message shown in the interface.
Additional menu
Adds custom menu entries. The field can use variables such as tenant code, selected tenant, tenant name, and username.
Additional Configuration item menu
Adds custom entries under the Configuration menu.
Additional Status item menu
Adds custom entries under the Status menu.
Additional Status/Stats item menu
Adds custom entries under the Status/Stats menu grouping.
Additional Admin item menu
Adds custom entries under the Admin menu.
Additional Bread item
Adds custom breadcrumb content.
Additional Head entries
Adds custom HTML entries to the page head. Use only trusted markup.
Logo Path
Path or URL for the logo image used by the theme.
Favicon Path
Path or URL for the browser favicon.
Custom CSS
Path to an extra CSS file loaded by the theme.
Custom Javascript
Path to an extra JavaScript file loaded by the theme.
Custom Login tpl
Template file used to override the login page for this theme.
Do not apply CSP
When enabled, the login page for this theme does not receive the Content Security Policy header. This is useful for legacy custom login templates while they are being updated. Leave it disabled when the custom login page is CSP-compatible.
Custom topmenu tpl
Template file used to override the top menu.
Custom dashboard tpl
Template file used to override the dashboard.
Custom Webphone URL
Alternative webphone URL. Use 
%%NAME%% to substitute the extension username.
Custom Wallboard ProxyAPI URL
Alternative Proxy API base URL used by wallboard integrations.
Max number of menu items
Controls how many Configuration menu items are displayed before the interface condenses them. This is applied at login time.
Max number of destination items shown
Limits the number of items displayed inside destination selectors.
Max number of Data Table items shown
Controls when larger lists switch to a grid-style view.
Default number of Data Table items show
Default page length for DataTable lists.
No menu items
Hides the main menu for this theme.
No header
Hides the page header for this theme.
Language
Forces a language for this theme, or leaves it on automatic browser detection.
Company
Company name shown on the login page.
Company Message
Main message shown on the login page.
Company Sub Message
Secondary login-page message.
Multiple clusters portal
Adds the cluster portal link for deployments that expose several clusters.
Switchboard login
Controls whether the login page shows a switchboard button, redirects to switchboard login, or shows no switchboard link.
Switchboard Favicon Path
Path or URL for the favicon used only by the switchboard page. Leave empty to keep the browser default behavior for the switchboard.
CSP and custom login templates
The Do not apply CSP option is intentionally theme-specific. It allows old or highly customized login templates to keep working while they are being made compatible with the login-page Content Security Policy. For a hardened login page, leave this option disabled and update the custom login template so all scripts, images, frames, and styles comply with the CSP rules.
Operational notes
Theme changes are evaluated at login and page-render time, so test both an authenticated page and the login page for each branded hostname.
Custom CSS, JavaScript, template, and head-entry fields should point only to trusted files maintained by the PBX administrator.
When using custom menus, keep links stable and avoid exposing tenant-specific administration links to users who should not access them.
When Let's Encrypt or virtual-host creation is enabled in Admin Settings, the Themes list can also be used to review certificate and web-server configuration status.