/**
 * iDigital Menu — Tree style
 * Accordion-style nested menu with hierarchy guide-line markers.
 * Fully offline, no web fonts, scoped under .iddd-menu--tree.
 */

.iddd-menu--tree {
	/* Surface */
	--iddd-tree-bg: #ffffff;
	--iddd-tree-fg: #1a1a1a;
	--iddd-tree-fg-muted: #6b7280;
	--iddd-tree-fg-hover: #000000;
	--iddd-tree-row-bg: transparent;
	--iddd-tree-row-bg-hover: #fafafa;

	/* Row geometry */
	--iddd-tree-row-py: 12px;
	--iddd-tree-row-px: 14px;
	--iddd-tree-row-fs: 15px;
	--iddd-tree-row-fw: 500;
	--iddd-tree-row-radius: 0px;

	/* Nesting & marker */
	--iddd-tree-indent: 20px;
	--iddd-tree-marker-color: #d1d5db;
	--iddd-tree-marker-width: 1px;
	--iddd-tree-marker-style: solid;
	--iddd-tree-marker-offset: 8px;

	/* Toggle button */
	--iddd-tree-toggle-size: 28px;
	--iddd-tree-toggle-color: var(--iddd-tree-fg-muted);
	--iddd-tree-toggle-color-hover: var(--iddd-tree-fg-hover);
	--iddd-tree-caret-icon-size: 16px;

	/* Item-icon / image */
	--iddd-tree-item-icon-size: 22px;
	--iddd-tree-item-image-size: 32px;
	--iddd-tree-item-image-radius: 6px;
	--iddd-tree-item-image-fit: cover;
	--iddd-tree-item-media-gap: 10px;

	/* Animation */
	--iddd-tree-anim-dur: 240ms;
	--iddd-tree-anim-ease: cubic-bezier(.22, .61, .36, 1);

	box-sizing: border-box;
	display: block;
	width: 100%;
	background: var(--iddd-tree-bg);
	color: var(--iddd-tree-fg);
	font-family: 'Vazirmatn', Tahoma, system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	line-height: 1.4;
}
.iddd-menu--tree *,
.iddd-menu--tree *::before,
.iddd-menu--tree *::after {
	box-sizing: border-box;
}
.iddd-menu--tree ul {
	list-style: none;
	margin: 0;
	padding: 0;
}
.iddd-menu--tree a {
	color: inherit;
	text-decoration: none;
	font-family: inherit;
}

/* ───────────────────────────── Lists & rows ───────────────────────────── */

.iddd-menu--tree .iddd-tree__list--root {
	padding: 0;
}

.iddd-menu--tree .iddd-tree__item {
	position: relative;
}

.iddd-menu--tree .iddd-tree__row {
	display: flex;
	align-items: center;
	gap: 4px;
	padding: var(--iddd-tree-row-py) var(--iddd-tree-row-px);
	border-radius: var(--iddd-tree-row-radius);
	background: var(--iddd-tree-row-bg);
	transition: background-color .15s ease, color .15s ease;
}
.iddd-menu--tree .iddd-tree__row:hover,
.iddd-menu--tree .iddd-tree__row:focus-within {
	background-color: var(--iddd-tree-row-bg-hover);
	color: var(--iddd-tree-fg-hover);
}

.iddd-menu--tree .iddd-tree__link {
	flex: 1;
	display: flex;
	align-items: center;
	gap: var(--iddd-tree-item-media-gap);
	min-width: 0;
	color: inherit;
	font-size: var(--iddd-tree-row-fs);
	font-weight: var(--iddd-tree-row-fw);
}
.iddd-menu--tree .iddd-tree__text {
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

/* Item media (icon / image). */
.iddd-menu--tree .iddd-item-media {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	flex: 0 0 auto;
}
.iddd-menu--tree .iddd-item-media--icon .iddd-item-icon {
	display: block;
	width: var(--iddd-tree-item-icon-size);
	height: var(--iddd-tree-item-icon-size);
	object-fit: contain;
}
.iddd-menu--tree .iddd-item-media--image .iddd-item-thumb {
	display: block;
	width: var(--iddd-tree-item-image-size);
	height: var(--iddd-tree-item-image-size);
	object-fit: var(--iddd-tree-item-image-fit);
	border-radius: var(--iddd-tree-item-image-radius);
}

/* ───────────────────────────── Toggle button ──────────────────────────── */

.iddd-menu--tree .iddd-tree__toggle {
	flex: 0 0 auto;
	appearance: none;
	background: transparent;
	border: 0;
	margin: 0;
	padding: 0;
	cursor: pointer;
	width: var(--iddd-tree-toggle-size);
	height: var(--iddd-tree-toggle-size);
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border-radius: 999px;
	color: var(--iddd-tree-toggle-color);
	transition: transform var(--iddd-tree-anim-dur) var(--iddd-tree-anim-ease),
		color .15s ease,
		background-color .15s ease;
}
.iddd-menu--tree .iddd-tree__toggle:hover,
.iddd-menu--tree .iddd-tree__toggle:focus-visible {
	color: var(--iddd-tree-toggle-color-hover);
	outline: none;
}
.iddd-menu--tree .iddd-tree__caret {
	display: inline-flex;
	width: var(--iddd-tree-caret-icon-size);
	height: var(--iddd-tree-caret-icon-size);
	transition: transform var(--iddd-tree-anim-dur) var(--iddd-tree-anim-ease);
}
.iddd-menu--tree .iddd-tree__caret > svg {
	width: 100%;
	height: 100%;
	display: block;
}
/* Open-state caret rotation differs slightly per icon family.
   - chevron / arrow: rotate 90deg (so right→down).
   - plus: rotate 45deg (so + becomes ×). */
.iddd-menu--tree.iddd-tree-toggle-chevron .iddd-tree__item--open > .iddd-tree__row .iddd-tree__caret,
.iddd-menu--tree.iddd-tree-toggle-arrow   .iddd-tree__item--open > .iddd-tree__row .iddd-tree__caret {
	transform: rotate(90deg);
}
[dir="rtl"] .iddd-menu--tree.iddd-tree-toggle-chevron .iddd-tree__item--open > .iddd-tree__row .iddd-tree__caret,
[dir="rtl"] .iddd-menu--tree.iddd-tree-toggle-arrow   .iddd-tree__item--open > .iddd-tree__row .iddd-tree__caret {
	transform: rotate(-90deg);
}
.iddd-menu--tree.iddd-tree-toggle-plus .iddd-tree__item--open > .iddd-tree__row .iddd-tree__caret {
	transform: rotate(45deg);
}

/* ─────────────────── Children list (collapsible) ─────────────────────── */

.iddd-menu--tree .iddd-tree__list--children {
	margin-inline-start: var(--iddd-tree-indent);
	overflow: hidden;
	height: 0;
	transition: height var(--iddd-tree-anim-dur) var(--iddd-tree-anim-ease);
	position: relative;
}
.iddd-menu--tree .iddd-tree__item--open > .iddd-tree__list--children {
	/* JS sets explicit pixel height, then unsets to auto after transition. */
	height: auto;
}
/* While JS animates, height is set inline; this rule is to overwrite that
   inline value when no JS has touched it yet. */

/* Hierarchy guide line — vertical "|" along the start edge of children. */
.iddd-menu--tree.iddd-tree-marker-on .iddd-tree__list--children::before {
	content: "";
	position: absolute;
	inset-block: 0;
	inset-inline-start: var(--iddd-tree-marker-offset);
	border-inline-start: var(--iddd-tree-marker-width) var(--iddd-tree-marker-style) var(--iddd-tree-marker-color);
	pointer-events: none;
}

/* When an item has children but the marker is on, give the OPEN list a
   subtle ::after that's a small connector from the parent row to the line.
   Only for visual polish — purely cosmetic, kept lightweight. */

/* ───────────────────── View-all link (first child) ─────────────────── */

.iddd-menu--tree .iddd-tree__view-all {
	color: var(--iddd-tree-view-all-fg, inherit);
	font-weight: var(--iddd-tree-view-all-fw, 600);
}
.iddd-menu--tree .iddd-tree__item--view-all > .iddd-tree__row {
	background: var(--iddd-tree-view-all-bg, transparent);
}
.iddd-menu--tree .iddd-tree__item--view-all > .iddd-tree__row:hover,
.iddd-menu--tree .iddd-tree__item--view-all > .iddd-tree__row:focus-within {
	background: var(--iddd-tree-view-all-bg-hover, var(--iddd-tree-row-bg-hover));
	color: var(--iddd-tree-view-all-fg-hover, var(--iddd-tree-fg-hover));
}

/* ───────────────────────── Entrance animations ─────────────────────────
   Tree shares the keyframes defined in slide.css (they're global once loaded)
   and applies them via the same `[data-iddd-anim]` / `[data-iddd-anim-mode]`
   attributes already injected by the widget on the root `.iddd-menu` element.
   The `iddd-anim-run` class is toggled by tree.js per `<ul>` to (re)play. */

.iddd-menu--tree {
	--iddd-anim-dur: 360ms;
	--iddd-anim-stagger: 55ms;
	--iddd-anim-dist: 18px;
	--iddd-anim-ease: cubic-bezier(.22, .61, .36, 1);
	--iddd-anim-root-delay: 0ms;
}

.iddd-menu--tree .iddd-tree__item {
	will-change: transform, opacity;
}

/* Initial hidden state — only when an animation mode is requested. */
.iddd-menu--tree[data-iddd-anim]:not([data-iddd-anim="none"]):not([data-iddd-anim="reveal"]) .iddd-tree__item {
	opacity: 0;
}
.iddd-menu--tree[data-iddd-anim="reveal"] .iddd-tree__item {
	clip-path: inset(0 100% 0 0);
	-webkit-clip-path: inset(0 100% 0 0);
}
[dir="rtl"] .iddd-menu--tree[data-iddd-anim="reveal"] .iddd-tree__item {
	clip-path: inset(0 0 0 100%);
	-webkit-clip-path: inset(0 0 0 100%);
}

/* Run keyframes when tree.js toggles `iddd-anim-run` on a `<ul>`. */
.iddd-menu--tree[data-iddd-anim]:not([data-iddd-anim="none"]) .iddd-anim-run > .iddd-tree__item {
	animation-duration: var(--iddd-anim-dur);
	animation-timing-function: var(--iddd-anim-ease);
	animation-fill-mode: both;
}

.iddd-menu--tree[data-iddd-anim="up"]     .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-up; }
.iddd-menu--tree[data-iddd-anim="down"]   .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-down; }
.iddd-menu--tree[data-iddd-anim="fade"]   .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-fade; }
.iddd-menu--tree[data-iddd-anim="blur"]   .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-blur; }
.iddd-menu--tree[data-iddd-anim="scale"]  .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-scale; }
.iddd-menu--tree[data-iddd-anim="reveal"] .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-reveal; }
[dir="rtl"] .iddd-menu--tree[data-iddd-anim="reveal"] .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-reveal-rtl; }
.iddd-menu--tree[data-iddd-anim="flip"]   .iddd-anim-run > .iddd-tree__item { animation-name: iddd-anim-flip; transform-origin: 50% 0; }
.iddd-menu--tree[data-iddd-anim="spring"] .iddd-anim-run > .iddd-tree__item {
	animation-name: iddd-anim-spring;
	animation-timing-function: cubic-bezier(.34, 1.56, .64, 1);
}

/* Side: auto in LTR comes from right; RTL flips. Explicit overrides via
   .iddd-anim-side-from-right / .iddd-anim-side-from-left lock direction. */
.iddd-menu--tree[data-iddd-anim="side"] .iddd-anim-run > .iddd-tree__item {
	animation-name: iddd-anim-from-right;
}
[dir="rtl"] .iddd-menu--tree[data-iddd-anim="side"]:not(.iddd-anim-side-from-right):not(.iddd-anim-side-from-left) .iddd-anim-run > .iddd-tree__item {
	animation-name: iddd-anim-from-left;
}
.iddd-menu--tree.iddd-anim-side-from-right[data-iddd-anim="side"] .iddd-anim-run > .iddd-tree__item {
	animation-name: iddd-anim-from-right;
}
.iddd-menu--tree.iddd-anim-side-from-left[data-iddd-anim="side"] .iddd-anim-run > .iddd-tree__item {
	animation-name: iddd-anim-from-left;
}

/* Stagger / All */
.iddd-menu--tree[data-iddd-anim-mode="stagger"] .iddd-anim-run > .iddd-tree__item {
	animation-delay: calc((var(--idx, 0) + 1) * var(--iddd-anim-stagger));
}
.iddd-menu--tree[data-iddd-anim-mode="all"] .iddd-anim-run > .iddd-tree__item {
	animation-delay: 0ms;
}

/* Root-level delay — applied only on the first show, then dropped via .iddd-anim-warm. */
.iddd-menu--tree[data-iddd-anim-mode="stagger"] .iddd-tree__list--root.iddd-anim-run > .iddd-tree__item {
	animation-delay: calc(var(--iddd-anim-root-delay, 0ms) + (var(--idx, 0) + 1) * var(--iddd-anim-stagger));
}
.iddd-menu--tree[data-iddd-anim-mode="all"] .iddd-tree__list--root.iddd-anim-run > .iddd-tree__item {
	animation-delay: var(--iddd-anim-root-delay, 0ms);
}
.iddd-menu--tree.iddd-anim-warm[data-iddd-anim-mode="stagger"] .iddd-tree__list--root.iddd-anim-run > .iddd-tree__item {
	animation-delay: calc((var(--idx, 0) + 1) * var(--iddd-anim-stagger));
}
.iddd-menu--tree.iddd-anim-warm[data-iddd-anim-mode="all"] .iddd-tree__list--root.iddd-anim-run > .iddd-tree__item {
	animation-delay: 0ms;
}

/* ─────────────────────────── Reduced motion ──────────────────────────── */

@media (prefers-reduced-motion: reduce) {
	.iddd-menu--tree .iddd-tree__list--children,
	.iddd-menu--tree .iddd-tree__caret,
	.iddd-menu--tree .iddd-tree__toggle {
		transition-duration: 0ms !important;
	}
	.iddd-menu--tree .iddd-anim-run > .iddd-tree__item {
		animation: none !important;
		opacity: 1 !important;
		clip-path: none !important;
		-webkit-clip-path: none !important;
	}
}