/* Header only: colours and logo limits remain owned by the active Theme. */
.admin-interface #header {
    padding-block: 8px;
    gap: 12px 24px;
    align-items: center;
}

.admin-interface #branding,
.admin-interface #branding h1 {
    min-width: 0;
    max-width: 100%;
}

.admin-interface #branding {
    flex-shrink: 0;
}

.admin-interface #branding h1 {
    margin: 0;
    font-weight: 500;
}

.admin-interface #branding h1 a {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 14px;
}

.admin-interface #branding h1 img.logo {
    margin: 0;
    width: auto;
    height: auto;
    /* Keep the package's display:inline-block !important and Theme max sizes. */
}

.admin-interface #branding h1 img.logo + span {
    white-space: normal;
}

.admin-interface #user-tools {
    align-self: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
    gap: 8px 16px;
    margin: 0;
    min-width: 0;
    white-space: normal;
}

.admin-interface #user-tools,
.admin-interface #user-tools #logout-form button {
    font-size: 0.8125rem;
    font-weight: 400;
    letter-spacing: normal;
    text-transform: none;
    line-height: 1.5;
}

.admin-interface #user-tools .header-welcome {
    line-height: 2.2;
}

.admin-interface #user-tools br {
    display: none;
}

.admin-interface #user-tools .header-account {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 6px 14px;
}

.admin-interface #user-tools .environment-label {
    display: inline-flex;
    align-items: center;
    padding: 1px 8px;
    margin-inline-end: 8px;
    border: 1px solid var(--admin-interface-env-color);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.5;
    white-space: nowrap;
}

.admin-interface #user-tools .environment-label::after {
    content: none;
}

.admin-interface #user-tools a,
.admin-interface #user-tools #logout-form button {
    border-bottom: 0;
}

.admin-interface #user-tools #logout-form button:hover,
.admin-interface #user-tools #logout-form button:active {
    margin-bottom: 0;
}

.admin-interface #header #user-tools a.header-machine-action {
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--admin-interface-module-background-color);
    color: var(--admin-interface-module-text-color);
    /* 19px bold: large text retains contrast on the current module blue. */
    font-size: 1.1875rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
}

.admin-interface #header #user-tools a.header-machine-action:hover,
.admin-interface #header #user-tools a.header-machine-action:active {
    background: var(--admin-interface-header-link-color);
    color: var(--admin-interface-header-background-color);
}

.admin-interface #user-tools a:focus-visible,
.admin-interface #user-tools button:focus-visible {
    outline: 2px solid var(--admin-interface-header-link-color);
    outline-offset: 3px;
}

.admin-interface #user-tools .theme-toggle {
    /* header.css scales the entire button with !important; size the SVG instead. */
    transform: none !important;
    margin: 0;
    padding: 4px;
}

.admin-interface #user-tools .theme-toggle svg {
    width: 1.125rem;
    height: 1.125rem;
    /* Package already supplies theme link/hover fill and transparent SVG backing. */
}

.admin-interface #user-tools .language-chooser {
    position: static;
    float: none;
    margin: 0;
}

@media (max-width: 1024px) {
    .admin-interface #header {
        flex-direction: column;
    }

    .admin-interface #branding h1 a,
    .admin-interface #user-tools,
    .admin-interface #user-tools .header-account {
        justify-content: center;
        text-align: center;
    }
}

/* OPTIONAL BREADCRUMB PROPOSAL — remove this block to restore module colours.
   Reuse header colours, including in dark/auto, without changing the sidebar. */
.admin-interface #container div.breadcrumbs {
    background: var(--admin-interface-header-background-color);
    color: var(--admin-interface-header-text-color);
    border-top: 1px solid var(--admin-interface-header-link-color);
}

.admin-interface #container div.breadcrumbs a {
    color: var(--admin-interface-header-link-color);
    text-decoration: none;
}

.admin-interface #container div.breadcrumbs a:hover,
.admin-interface #container div.breadcrumbs a:focus,
.admin-interface #container div.breadcrumbs a:active {
    color: var(--admin-interface-header-link-hover-color);
    text-decoration: underline;
}
/* END OPTIONAL BREADCRUMB PROPOSAL */