/**
 * CCC — blueimg: общий контракт превью изображений для ВСЕХ тем.
 * Префикс blueimg- (не имя темы). Разметка div/figure — идентичная в каждой теме.
 * Цвет-заглушка #6DB3F2: виден, пока картинка грузится / если URL пустой.
 * Источник паттерна: Siena theme alpha (alpha-post_preview / #6DB3F2 / cover bg).
 * Документация: docs/ru/28-blueimg.md, docs/en/28-blueimg.md
 */

:root {
	/* Синий плейсхолдер как в Siena */
	--blueimg-placeholder: #6db3f2;
	/* Скругление по умолчанию */
	--blueimg-radius: 4px;
	/* Масштаб при hover (опционально на контейнере) */
	--blueimg-hover-scale: 1.05;
}

/* =============================================================================
   A) Cover-box: фиксированная высота + background-image (карточки, списки, hero)
   ============================================================================= */

.blueimg-preview {
	position: relative;
	overflow: hidden;
	border-radius: var(--blueimg-radius);
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
	transition: transform 0.2s ease;
	margin-bottom: 10px;
	/* Safari: плавный hover без дёрганья */
	-webkit-transform: translateZ(0);
	transform: translateZ(0);
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
}

.blueimg-preview:hover {
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Без тени (внутри другого контейнера) */
.blueimg-preview--flat {
	box-shadow: none;
	margin-bottom: 0;
}

.blueimg-preview--flat:hover {
	box-shadow: none;
}

/**
 * Поле под cover. Высота — только модификаторами.
 * background-color всегда синий; URL и position — через style в TPL
 * (background-image + background-position), НЕ через shorthand background:,
 * иначе цвет-заглушка сбрасывается.
 */
.blueimg-preview__bg {
	position: relative;
	width: 100%;
	height: 100%;
	overflow: hidden;
	border-radius: var(--blueimg-radius);
	background-color: var(--blueimg-placeholder);
	background-repeat: no-repeat !important;
	background-size: cover !important;
	/* Дефолт, если в style нет position (Siena: 50% 1%) */
	background-position: 50% 1%;
	transition: transform 0.3s ease;
}

/* Высоты — как single-background* / инлайны Siena */
.blueimg-preview__bg--h180 {
	height: 180px;
}

.blueimg-preview__bg--h200 {
	height: 200px;
}

.blueimg-preview__bg--h220 {
	height: 220px;
}

.blueimg-preview__bg--h250 {
	height: 250px;
}

/* Верх карточки: скругление только сверху */
.blueimg-preview__bg--card-top {
	border-radius: var(--blueimg-radius) var(--blueimg-radius) 0 0;
}

.blueimg-preview:hover .blueimg-preview__bg {
	transform: scale(var(--blueimg-hover-scale));
}

/* Отключить зум на конкретном блоке */
.blueimg-preview--no-zoom:hover .blueimg-preview__bg {
	transform: none;
}

/* —— Nude / 18+ оверлей (Siena bg-nude) —— */
.blueimg-preview--nude .blueimg-preview__nude-overlay {
	position: absolute;
	inset: 0;
	z-index: 3;
	background: rgba(3, 3, 3, 0.87);
	filter: brightness(0.1) contrast(0.1) saturate(0);
	transition: background 0.3s ease, filter 0.5s ease;
}

.blueimg-preview--nude:hover .blueimg-preview__nude-overlay {
	background: transparent;
	filter: none;
}

.blueimg-preview__nude-label {
	position: absolute;
	top: 50%;
	left: 50%;
	z-index: 4;
	transform: translate(-50%, -50%);
	padding: 0.25rem;
	color: #fff;
	font-size: 12px;
	text-align: center;
	user-select: none;
	pointer-events: none;
	transition: opacity 0.3s ease;
}

.blueimg-preview--nude:hover .blueimg-preview__nude-label {
	opacity: 0;
}

/* =============================================================================
   B) Figure + <img>: синий под картинкой (галереи, collage, exif-листы)
   ============================================================================= */

.blueimg-figure {
	position: relative;
	display: block;
	margin: 0;
	overflow: hidden;
	border-radius: var(--blueimg-radius);
	background-color: var(--blueimg-placeholder);
	/* Пока img не пришёл — поле не схлопывается */
	min-height: 30px;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
	transition: transform 0.2s ease;
	-webkit-transform: translateZ(0);
	transform: translateZ(0);
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
}

/* Collage / крупные превью — чуть выше min-height */
.blueimg-figure--tall {
	min-height: 50px;
}

.blueimg-figure--flat {
	box-shadow: none;
}

.blueimg-figure__img {
	display: block;
	width: 100%;
	height: auto;
	border-radius: var(--blueimg-radius);
	transition: transform 0.3s ease;
	-webkit-transform: translateZ(0);
	transform: translateZ(0);
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
}

.blueimg-figure:hover .blueimg-figure__img,
.blueimg-figure__img:hover {
	transform: scale(var(--blueimg-hover-scale));
}

.blueimg-figure--no-zoom:hover .blueimg-figure__img,
.blueimg-figure--no-zoom .blueimg-figure__img:hover {
	transform: none;
}

/* Подпись для a11y / SEO; визуально скрыта (Siena: uk-hidden) */
.blueimg-figure__caption {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* Nude на figure */
.blueimg-figure--nude .blueimg-figure__img {
	filter: saturate(0);
}

.blueimg-figure--nude:hover .blueimg-figure__img {
	filter: saturate(1);
}

.blueimg-figure--nude .blueimg-preview__nude-overlay {
	position: absolute;
	inset: 0;
	z-index: 3;
	background: rgba(3, 3, 3, 0.87);
	filter: brightness(0.1) contrast(0.1) saturate(0);
	transition: background 0.3s ease, filter 0.5s ease;
}

.blueimg-figure--nude:hover .blueimg-preview__nude-overlay {
	background: transparent;
	filter: none;
}

.blueimg-figure--nude:hover .blueimg-preview__nude-label {
	opacity: 0;
}

/**
 * Опционально: grayscale для тёмной темы сайта (Siena alpha-image--tobw).
 * Вешать на img или на cover-box, когда тема включает dark.
 */
.blueimg-tobw {
	filter: grayscale(100%);
}

.blueimg-preview__bg.blueimg-tobw {
	background-blend-mode: luminosity;
}

/* =============================================================================
   B2) Hero position editor — add/edit: live preview + native range (uk-range)
   Логика Siena heroposition, без jQuery UI.
   ============================================================================= */

.blueimg-hero-editor {
	margin: 0 0 1.5rem;
}

.blueimg-hero-editor__preview {
	position: relative;
	/* Высота как у публичного hero — переопределяется темой (.horizon-page__hero) */
}

.blueimg-hero-editor__preview[hidden],
.blueimg-hero-editor__controls[hidden] {
	display: none !important;
}

.blueimg-hero-editor__controls {
	position: absolute;
	left: 50%;
	bottom: 1.25rem;
	transform: translateX(-50%);
	z-index: 2;
	width: min(80%, 28rem);
	padding: 0.75rem 1rem;
	border-radius: var(--blueimg-radius, 4px);
	background: rgba(0, 0, 0, 0.45);
	color: #fff;
	box-sizing: border-box;
}

.blueimg-hero-editor__controls-label {
	display: block;
	margin: 0 0 0.35rem;
	font-size: 0.85rem;
	line-height: 1.3;
	opacity: 0.95;
}

.blueimg-hero-editor__controls .uk-range {
	width: 100%;
	margin: 0;
}

/* =============================================================================
   C) List preview grid — логика Siena stories (:has по числу ячеек + even/odd)
   Макс. 5 превью в TPL. Классы общие для всех тем.
   ============================================================================= */

.blueimg-list-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 8px;
	grid-auto-rows: 180px;
	grid-auto-flow: dense;
	/* После title, перед описанием */
	margin: 0.75rem 0 1.25rem;
	text-decoration: none;
	color: inherit;
}

.blueimg-list-grid__cell {
	position: relative;
	min-height: 0;
	overflow: hidden;
	border-radius: var(--blueimg-radius);
}

.blueimg-list-grid__cell .blueimg-preview {
	height: 100%;
	margin: 0;
	border-radius: inherit;
	box-shadow: none;
}

.blueimg-list-grid__cell .blueimg-preview__bg {
	height: 100%;
	border-radius: inherit;
	background-position: 50% 50%;
}

/* 1 */
.blueimg-list-grid:has(> .blueimg-list-grid__cell:only-child) {
	grid-template-columns: 1fr;
	grid-auto-rows: 250px;
}

/* 2 */
.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(2):last-child) {
	grid-template-columns: 1fr 1fr;
	grid-auto-rows: 180px;
}

/* 3 — большой слева (odd / default) */
.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(3):last-child) {
	grid-template-columns: 2fr 1fr;
	grid-auto-rows: 180px;
}

.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(3):last-child) > .blueimg-list-grid__cell:nth-child(1) {
	grid-row: span 2;
}

.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(3):last-child) {
	grid-template-columns: 1fr 2fr;
}

.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(3):last-child) > .blueimg-list-grid__cell:nth-child(1) {
	grid-row: span 1;
}

.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(3):last-child) > .blueimg-list-grid__cell:nth-child(2) {
	grid-row: span 2;
}

/* 4 */
.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(4):last-child) {
	grid-template-columns: 1fr 1fr;
	grid-auto-rows: 180px;
}

/* 5 — крупный блок + полоса (odd: большой слева) */
.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(5):last-child) {
	grid-template-columns: 1fr 1fr 1fr;
	grid-auto-rows: 160px;
}

.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(5):last-child) > .blueimg-list-grid__cell:nth-child(1) {
	grid-column: span 2;
	grid-row: span 2;
}

.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(5):last-child) > .blueimg-list-grid__cell:nth-child(2) {
	grid-row: span 2;
}

/* 5 even — зеркало: большой справа */
.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(5):last-child) > .blueimg-list-grid__cell:nth-child(1) {
	grid-column: span 1;
	grid-row: span 2;
}

.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(5):last-child) > .blueimg-list-grid__cell:nth-child(2) {
	grid-column: span 2;
	grid-row: span 2;
}

/* Мобилка: упрощённая сетка (без каскада 1200/960 как в Siena) */
@media (max-width: 640px) {
	.blueimg-list-grid {
		gap: 4px;
		grid-auto-rows: 140px;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:only-child) {
		grid-auto-rows: 200px;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(2):last-child) {
		grid-template-columns: 1fr 1fr;
		grid-auto-rows: 140px;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(3):last-child) {
		grid-template-columns: 2fr 1fr;
		grid-auto-rows: 100px;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(4):last-child),
	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(5):last-child) {
		grid-template-columns: 1fr 1fr;
		grid-auto-rows: 120px;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(5):last-child) > .blueimg-list-grid__cell:nth-child(1) {
		grid-column: span 2;
		grid-row: span 1;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(5):last-child) > .blueimg-list-grid__cell:nth-child(2) {
		grid-row: span 1;
	}

	.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(3):last-child) > .blueimg-list-grid__cell:nth-child(1),
	.blueimg-list-grid--even:has(> .blueimg-list-grid__cell:nth-child(3):last-child) > .blueimg-list-grid__cell:nth-child(2) {
		grid-row: unset;
	}

	.blueimg-list-grid:has(> .blueimg-list-grid__cell:nth-child(3):last-child) > .blueimg-list-grid__cell:nth-child(1) {
		grid-row: span 2;
	}
}