/**
 * @scilence/primitives — FilterRail CSS
 *
 * Tokens-only (`--s-*`). No hardcoded colors / pixel sizes / shadows.
 * Light + dark themes both correct (palette tokens flip under
 * `[data-theme]`). Hugging Face register: dense, mono-caps grouped
 * sections, precision-tool feel.
 */

.s-filter-rail__top {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-2);
	padding: var(--s-space-3) var(--s-space-3) 0;
}

.s-filter-rail__visibility,
.s-filter-rail__saved-views {
	display: flex;
	flex-wrap: wrap;
	gap: var(--s-space-twohair);
}

.s-filter-rail__visibility-pill[data-active="true"],
.s-filter-rail__saved-views .s-pill-filter__pill[data-active="true"] {
	border-color: var(--s-color-border-strong);
	background: var(--s-brand-alpha-10);
}

.s-filter-rail {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-2);
	padding: var(--s-space-3);
	font-family: var(--s-font-sans);
	font-size: var(--s-font-size-condensed);
	color: var(--s-color-fg-primary);
	background: transparent;
	min-height: 0;
}

/* Scrollable filter body — groups scroll; footer stays pinned. */
.s-filter-rail__body {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-2);
	flex: 1 1 auto;
	min-height: 0;
	overflow-y: auto;
}

/* Footer action zone — page actions always; bulk on selection. */
.s-filter-rail__footer {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-hair);
	flex-shrink: 0;
	margin-top: auto;
	padding-top: var(--s-space-2);
	border-top: 1px solid var(--s-color-border-subtle);
}

.s-filter-rail__footer[hidden] {
	display: none;
}

.s-filter-rail__footer-summary {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--s-space-2);
	padding: 0 var(--s-space-hair);
}

.s-filter-rail__footer-summary[hidden] {
	display: none;
}

.s-filter-rail__footer-count {
	font-family: var(--s-font-mono);
	font-size: var(--s-font-size-condensed);
	font-variant-numeric: tabular-nums;
	color: var(--s-color-fg-secondary);
}

.s-filter-rail__footer-clear {
	font-family: var(--s-font-sans);
	font-size: var(--s-font-size-condensed);
	color: var(--s-color-fg-muted);
	background: transparent;
	border: none;
	cursor: pointer;
	padding: var(--s-space-hair) var(--s-space-1);
	border-radius: var(--s-radius-1);
}

.s-filter-rail__footer-clear:hover {
	color: var(--s-color-fg-primary);
	background: var(--s-color-hover-bg);
}

.s-filter-rail__footer-actions {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-hair);
}

.s-filter-rail__footer-action {
	align-self: stretch;
	text-align: left;
	font-family: var(--s-font-sans);
	font-size: var(--s-font-size-condensed);
	color: var(--s-color-fg-primary);
	background: var(--s-color-surface-subtle);
	border: 1px solid var(--s-color-border-subtle);
	border-radius: var(--s-radius-1);
	cursor: pointer;
	padding: var(--s-space-hair) var(--s-space-2);
	transition: background var(--s-duration-fast) var(--s-ease-out),
	            border-color var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__footer-action:hover:not(:disabled) {
	background: var(--s-color-hover-bg);
	border-color: var(--s-color-border-strong);
}

.s-filter-rail__footer-action:disabled {
	opacity: 0.45;
	cursor: not-allowed;
}

.s-filter-rail__footer-action:focus-visible {
	outline: 2px solid var(--s-color-focus-ring);
	outline-offset: 1px;
}

/* ── Header (filters · N active + clear all) ───────────────────────── */

.s-filter-rail__header {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: var(--s-space-2);
	padding-bottom: var(--s-space-hair);
}

.s-filter-rail__count {
	font-family: var(--s-font-mono);
	font-size: var(--s-font-size-condensed);
	font-variant-caps: all-small-caps;
	letter-spacing: 0.05em;
	color: var(--s-color-fg-muted);
}

.s-filter-rail__clear-all {
	font-family: var(--s-font-sans);
	font-size: var(--s-font-size-condensed);
	color: var(--s-color-fg-muted);
	background: transparent;
	border: none;
	cursor: pointer;
	padding: var(--s-space-hair) var(--s-space-1);
	border-radius: var(--s-radius-1);
	transition: color var(--s-duration-fast) var(--s-ease-out),
	            background var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__clear-all:hover {
	color: var(--s-color-fg-primary);
	background: var(--s-color-hover-bg);
}

.s-filter-rail__clear-all:focus-visible {
	outline: 2px solid var(--s-color-focus-ring);
	outline-offset: 1px;
}

/* ── Search ────────────────────────────────────────────────────────── */

.s-filter-rail__search {
	position: relative;
	display: flex;
	align-items: center;
	gap: var(--s-space-hair);
	border: 1px solid var(--s-color-border-subtle);
	border-radius: var(--s-radius-1);
	padding: var(--s-space-hair) var(--s-space-2);
	transition: border-color var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__search:focus-within {
	border-color: var(--s-color-focus-border);
}

.s-filter-rail__search-icon {
	display: inline-flex;
	color: var(--s-color-fg-tertiary);
	flex-shrink: 0;
}

.s-filter-rail__search-input {
	flex: 1;
	min-width: 0;
	font: inherit;
	font-size: var(--s-font-size-condensed);
	color: var(--s-color-fg-primary);
	background: transparent;
	border: none;
	outline: none;
	padding: 0;
}

.s-filter-rail__search-input::placeholder {
	color: var(--s-color-fg-tertiary);
}

.s-filter-rail__search-input::-webkit-search-cancel-button {
	display: none;
}

.s-filter-rail__search-clear {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: none;
	background: transparent;
	color: var(--s-color-fg-tertiary);
	cursor: pointer;
	padding: var(--s-space-hair);
	border-radius: var(--s-radius-1);
	transition: color var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__search-clear:hover {
	color: var(--s-color-fg-primary);
}

/* ── Empty-state prompt ────────────────────────────────────────────── */

.s-filter-rail__prompt {
	color: var(--s-color-fg-muted);
	font-size: var(--s-font-size-condensed);
	font-style: italic;
	padding: var(--s-space-hair) var(--s-space-1);
}

/* ── Groups ────────────────────────────────────────────────────────── */

.s-filter-rail__groups {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-2);
}

.s-filter-rail__group {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-hair);
}

.s-filter-rail__group-header-row {
	display: flex;
	align-items: center;
	gap: var(--s-space-hair);
}

.s-filter-rail__group-header {
	display: flex;
	align-items: center;
	gap: var(--s-space-hair);
	flex: 1;
	min-width: 0;
	background: transparent;
	border: none;
	color: var(--s-color-fg-muted);
	cursor: pointer;
	padding: var(--s-space-hair) 0;
	font-family: var(--s-font-mono);
	font-size: var(--s-font-size-condensed);
	font-variant-caps: all-small-caps;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	text-align: left;
	transition: color var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__visibility-toggle {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
	width: var(--s-space-4);
	height: var(--s-space-4);
	padding: 0;
	border: none;
	border-radius: var(--s-radius-1);
	background: transparent;
	color: var(--s-color-fg-muted);
	cursor: pointer;
	transition: color var(--s-duration-fast) var(--s-ease-out),
	            background var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__visibility-toggle:hover {
	color: var(--s-color-fg-primary);
	background: var(--s-color-hover-bg);
}

.s-filter-rail__visibility-toggle:focus-visible {
	outline: 2px solid var(--s-color-focus-ring);
	outline-offset: 1px;
}

.s-filter-rail__visibility-toggle--off {
	color: var(--s-color-fg-tertiary);
	opacity: 0.72;
}

.s-filter-rail__visibility-toggle--off:hover {
	color: var(--s-color-fg-muted);
	opacity: 1;
}

.s-filter-rail__group-header:hover {
	color: var(--s-color-fg-primary);
}

.s-filter-rail__group-header:focus-visible {
	outline: 2px solid var(--s-color-focus-ring);
	outline-offset: 2px;
	border-radius: var(--s-radius-1);
}

.s-filter-rail__group-chevron {
	display: inline-flex;
	transition: transform var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__group-header[aria-expanded="false"] .s-filter-rail__group-chevron {
	transform: rotate(-90deg);
}

.s-filter-rail__group-label {
	flex: 1;
}

.s-filter-rail__group-active-badge {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: var(--s-space-3);
	height: var(--s-space-3);
	padding: 0 var(--s-space-hair);
	background: var(--s-color-prominent-bg);
	color: var(--s-color-prominent-fg);
	border-radius: var(--s-radius-pill);
	font-family: var(--s-font-mono);
	font-size: var(--s-font-size-condensed);
	font-variant-numeric: tabular-nums;
}

.s-filter-rail__group-active-badge[hidden] {
	display: none;
}

.s-filter-rail__group-body {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-hair);
	padding-left: var(--s-space-2);
}

.s-filter-rail__group-body[hidden] {
	display: none;
}

/* Pass 3 — reverse progressive disclosure: greyed but still clickable */
.s-filter-rail__chip--greyed {
	opacity: 0.45;
	color: var(--s-color-fg-tertiary);
	border-color: var(--s-color-border-subtle);
}

.s-filter-rail__chip--greyed:hover {
	opacity: 0.72;
	color: var(--s-color-fg-muted);
}

.s-filter-rail__group-chips {
	display: flex;
	flex-wrap: wrap;
	gap: var(--s-space-hair);
}

.s-filter-rail__group-more,
.s-filter-rail__group-show-hidden {
	align-self: flex-start;
	background: transparent;
	border: none;
	color: var(--s-color-fg-muted);
	font-family: var(--s-font-sans);
	font-size: var(--s-font-size-condensed);
	padding: var(--s-space-hair) var(--s-space-1);
	cursor: pointer;
	border-radius: var(--s-radius-1);
	transition: color var(--s-duration-fast) var(--s-ease-out),
	            background var(--s-duration-fast) var(--s-ease-out);
}

.s-filter-rail__group-more:hover,
.s-filter-rail__group-show-hidden:hover {
	color: var(--s-color-fg-primary);
	background: var(--s-color-hover-bg);
}

.s-filter-rail__group-more[hidden],
.s-filter-rail__group-show-hidden[hidden] {
	display: none;
}

/* ── Filter rail chip state (appearance lives in chip.css / Chip primitive) ── */

/* ── Range picker ──────────────────────────────────────────────────── */

.s-filter-rail__range {
	display: flex;
	flex-direction: column;
	gap: var(--s-space-hair);
}

.s-filter-rail__range-presets {
	display: flex;
	flex-wrap: wrap;
	gap: var(--s-space-hair);
}

.s-filter-rail__range-absolute {
	display: flex;
	align-items: center;
	gap: var(--s-space-hair);
}

.s-filter-rail__range-date {
	flex: 1;
	min-width: 0;
}

.s-filter-rail__range-sep {
	color: var(--s-color-fg-tertiary);
	font-family: var(--s-font-mono);
}

.s-filter-rail__range-fallback {
	color: var(--s-color-fg-tertiary);
	font-size: var(--s-font-size-condensed);
	font-style: italic;
}