@layer theme {
	/* one component, three LuCI selectors, no markup difference worth honouring: #tabmenu ul.tabs
	 * (page tabs), .tabs (view tabs), .cbi-tabmenu (CBI form tabs, the mode switcher included).
	 * Active marker: .active on ul.tabs, .cbi-tab on every .cbi-tabmenu flavour. */
	#tabmenu { margin-bottom: 0; }

	/* the card */
	#tabmenu ul.tabs,
	.tabs,
	.cbi-tabmenu {
		display: flex;
		flex-wrap: wrap;
		gap: var(--fs-space-1);
		list-style: none;
		margin: 0 0 var(--fs-card-gap);
		padding: var(--fs-space-2);
		background: var(--fs-panel);
		border: var(--fs-hairline);
		border-radius: var(--fs-radius-lg);
		/* zeroes the folder-tab baseline gradient (1px x 29px) instead of restating it, so a
		 * third-party gradient the strip carries is sized away too */
		background-size: 0 0;
	}

	/* a strip nested in .cbi-section -> soft inset row, no frame (a card inside a card reads as a bug) */
	.cbi-section .tabs,
	.cbi-section .cbi-tabmenu:not(.mode):not(.map) {
		background: var(--fs-panel2);
		padding: var(--fs-space-1-5);
		box-shadow: none;
	}

	#tabmenu ul.tabs > li,
	.tabs > li,
	.cbi-tabmenu > li {
		height: auto;
		margin: 0; padding: 0;
		border: 0; background: none;
		border-radius: var(--fs-radius);
		color: var(--fs-dim);
	}

	/* page tabs and the mode switcher never carry a sentence-length label; ul.cbi-tabmenu.mode > li
	 * wins specificity over .cbi-tabmenu > li below, so mode pills stay none regardless of order */
	#tabmenu ul.tabs > li,
	ul.cbi-tabmenu.mode > li,
	.tabs > li {
		max-width: none;
	}

	/* CBI form tabs only, not the mode switcher: a long label overflowed its column by 28.6px at
	 * 320px/Large, EN measured 0 */
	.cbi-tabmenu > li {
		max-width: 100%;
	}

	#tabmenu ul.tabs > li > a,
	.tabs > li > a,
	.cbi-tabmenu > li > a {
		display: block;
		margin: 0;
		padding: var(--fs-space-2) var(--fs-space-3-5);
		border: 0;
		border-radius: var(--fs-radius);
		line-height: 1.3;
		font-size: var(--fs-type);
		font-weight: var(--fs-weight);
		color: var(--fs-dim);
		transition: background var(--fs-dur), color var(--fs-dur);
	}

	#tabmenu ul.tabs > li > a:hover,
	.tabs > li > a:hover,
	.cbi-tabmenu > li > a:hover {
		background: var(--fs-accent-soft);
		color: var(--fs-text);
	}

	/* active pill */
	#tabmenu ul.tabs > li.active,
	.tabs > li.active,
	.cbi-tabmenu > li.cbi-tab {
		color: var(--fs-on-accent);
	}
	#tabmenu ul.tabs > li.active > a,
	.tabs > li.active > a,
	.cbi-tabmenu > li.cbi-tab > a {
		background: var(--fs-accent);
		color: var(--fs-on-accent);
		font-weight: var(--fs-weight-bold);
	}

	/* one ring for both states, on --fs-focus-ring-solo: base's outline is invisible on the active
	 * pill, whose background is the same accent. box-shadow, not outline, because the strip clips
	 * and a shadow is not */
	#tabmenu ul.tabs > li > a:focus-visible,
	.tabs > li > a:focus-visible,
	.cbi-tabmenu > li > a:focus-visible {
		outline: none;
		box-shadow: var(--fs-focus-ring-solo);
	}

	/* fitTabStrips (fs-chrome.js) escalates dense1 -> dense2 on wrap; for tabs both are the same
	 * pill padding (gap and font-size already equal the base), so one list serves both */
	#tabmenu ul.tabs:is(.fs-dense1, .fs-dense2) > li > a,
	.tabs:is(.fs-dense1, .fs-dense2) > li > a,
	.cbi-tabmenu:is(.fs-dense1, .fs-dense2) > li > a { padding: var(--fs-space-1) var(--fs-space-2); }

	/* map-level tabs keep the body font size instead of base's 16.5px/bold */
	.cbi-tabmenu.map > li { font-size: var(--fs-type); font-weight: var(--fs-weight); }
	/* the little "n errors" badge on a tab */
	.cbi-tab-disabled[data-errors]::after { background: var(--fs-danger); }
}