/* ==========================================================================
   Презентації: каталог, сторінка презентації, переглядач, попап
   ========================================================================== */

.pr-archive,
.pr-single {
	padding-block: clamp(24px, 5vw, 56px);
	max-width: 68rem;
}

.pr-archive__head { margin: 18px 0 24px; }
.pr-archive__head .z-sub { margin-top: 8px; max-width: 46rem; }

/* Фільтри ------------------------------------------------------------------ */

.pr-filters {
	display: grid;
	gap: 0;
	margin-bottom: 26px;
	padding: 6px 18px;
	border: 1px solid var(--line);
	border-radius: 18px;
	background: var(--paper-3);
}

/* Кожен рядок фільтра — окрема смуга з відступом і лінією між ними,
   інакше «Предмет: Усі» й «Клас: Усі» зливаються в одну пляму. */
.pr-filters__group {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px 10px;
	padding: 14px 0;
}

.pr-filters__group + .pr-filters__group {
	border-top: 1px solid var(--line-soft, var(--line));
}

@media (max-width: 560px) {
	/* На телефоні підпис стає окремим рядком над чипами. */
	.pr-filters__label { flex-basis: 100%; min-width: 0; margin-right: 0; }
}

.pr-filters__label {
	min-width: 6rem;
	margin-right: 6px;
	font-size: 0.8125rem;
	font-weight: 600;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--ink-3);
}

.pr-filters .z-chip { text-decoration: none; }
.pr-filters .z-chip small { margin-left: 4px; opacity: 0.7; }
.pr-filters .z-chip.is-active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Сітка карток --------------------------------------------------------------- */

.pr-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
	gap: 18px;
}

.pr-grid--3 { grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }

.pr-card {
	display: flex;
	flex-direction: column;
	overflow: hidden;
	border: 1px solid var(--line);
	border-radius: 18px;
	background: var(--card);
	transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.pr-card:hover {
	transform: translateY(-2px);
	box-shadow: 0 18px 36px -26px rgba(25, 33, 46, 0.5);
}

.pr-card__cover {
	position: relative;
	display: block;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background: var(--paper-2);
}

.pr-card__cover img { width: 100%; height: 100%; object-fit: cover; }

.pr-card__blank {
	display: grid;
	place-items: center;
	height: 100%;
	color: var(--ink-4);
}

.pr-card__slides {
	position: absolute;
	right: 10px;
	bottom: 10px;
	padding: 3px 9px;
	border-radius: 999px;
	background: rgba(25, 33, 46, 0.8);
	color: #fff;
	font-size: 0.75rem;
	font-weight: 600;
}

.pr-card__body { display: grid; gap: 6px; padding: 14px 16px 18px; }

.pr-card__meta {
	display: flex;
	flex-wrap: wrap;
	gap: 6px 12px;
	margin: 0;
	font-size: 0.78rem;
	font-weight: 600;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--ink-3);
}

.pr-card__title { margin: 0; font-size: 1.0625rem; line-height: 1.3; }
.pr-card__title a { color: inherit; text-decoration: none; }
.pr-card__title a:hover { color: var(--ochre); }
.pr-card__excerpt { margin: 0; font-size: 0.9rem; color: var(--ink-2); }

.pr-empty { padding: 40px 0; color: var(--ink-2); }
.pr-archive__cta { margin-top: 44px; }

/* Сторінка презентації --------------------------------------------------- */

.pr-head { margin: 18px 0 22px; }
.pr-head .z-pill { margin-bottom: 12px; }
.pr-head__title { margin: 0; max-width: 26ch; }
.pr-head__lead { margin: 12px 0 0; max-width: 48rem; font-size: 1.0625rem; color: var(--ink-2); }

.pr-layout {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 19rem;
	gap: 22px;
	align-items: start;
}

/* Переглядач ------------------------------------------------------------- */

.pr-viewer {
	border: 1px solid var(--line);
	border-radius: 18px;
	overflow: hidden;
	background: var(--ink);
}

.pr-viewer__stage {
	position: relative;
	display: grid;
	place-items: center;
	aspect-ratio: 16 / 9;
	background: #10151d;
	-webkit-user-select: none;
	user-select: none;
}

.pr-viewer__canvas {
	max-width: 100%;
	max-height: 100%;
	display: block;
}

.pr-viewer__mark {
	position: absolute;
	inset: 0;
	display: grid;
	grid-template-columns: 1fr 1fr;
	align-content: space-around;
	justify-items: center;
	overflow: hidden;
	pointer-events: none;
	transform: rotate(-20deg) scale(1.4);
	color: rgba(255, 255, 255, 0.16);
	font-size: 0.72rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	white-space: nowrap;
	mix-blend-mode: difference;
}

.pr-viewer__loading {
	position: absolute;
	margin: 0;
	color: rgba(255, 255, 255, 0.7);
	font-size: 0.9375rem;
}

.pr-viewer__bar {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 10px 12px;
	background: var(--paper);
	border-top: 1px solid var(--line);
}

.pr-viewer__count {
	min-width: 5rem;
	text-align: center;
	font-variant-numeric: tabular-nums;
	font-weight: 600;
}

.pr-viewer__full { margin-left: auto; }
.pr-viewer.is-full .pr-viewer__stage { aspect-ratio: auto; height: calc(100vh - 56px); }

/* Бічна панель ----------------------------------------------------------- */

.pr-side { position: sticky; top: calc(var(--header-h, 76px) + 16px); display: grid; gap: 14px; }

.pr-side__card {
	display: grid;
	gap: 12px;
	padding: 18px;
	border: 1px solid var(--line);
	border-radius: 18px;
	background: var(--card);
	box-shadow: 0 16px 36px -30px rgba(25, 33, 46, 0.5);
}

.pr-facts {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 10px 14px;
	margin: 0 0 4px;
}

.pr-facts div { display: grid; gap: 2px; }
.pr-facts dt { font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-3); }
.pr-facts dd { margin: 0; font-weight: 600; }

.pr-side__note { margin: -4px 0 0; font-size: 0.875rem; color: var(--ink-3); text-align: center; }

.pr-side__trust {
	display: grid;
	gap: 8px;
	margin: 0;
	padding: 0 6px;
	list-style: none;
	font-size: 0.9rem;
	color: var(--ink-2);
}

.pr-side__trust li { display: flex; align-items: center; gap: 8px; }
.pr-side__trust .z-icon { color: var(--green); flex: none; }

/* Опис -------------------------------------------------------------------- */

.pr-content {
	max-width: 46rem;
	margin-top: 40px;
}

.pr-related { margin-top: 48px; }
.pr-related .z-h2 { margin-bottom: 16px; }

/* Попап реєстрації ---------------------------------------------------------- */

.pr-gate {
	position: fixed;
	inset: 0;
	z-index: 100;
	display: grid;
	place-items: center;
	padding: 20px;
}

.pr-gate__backdrop {
	position: absolute;
	inset: 0;
	background: rgba(25, 33, 46, 0.55);
	-webkit-backdrop-filter: blur(6px);
	backdrop-filter: blur(6px);
	opacity: 0;
	transition: opacity 0.18s ease;
}

.pr-gate__panel {
	position: relative;
	width: min(100%, 460px);
	max-height: calc(100vh - 40px);
	overflow: auto;
	padding: 30px 28px 24px;
	border-radius: 24px;
	background: linear-gradient(180deg, rgba(194, 84, 10, 0.06), transparent 34%), var(--paper);
	border: 1px solid var(--line);
	box-shadow: 0 40px 80px -30px rgba(25, 33, 46, 0.45);
	opacity: 0;
	transform: translateY(14px) scale(0.98);
	transition: opacity 0.18s ease, transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.pr-gate.is-open .pr-gate__backdrop,
.pr-gate.is-open .pr-gate__panel { opacity: 1; transform: none; }

.pr-gate__close {
	position: absolute;
	top: 14px;
	right: 14px;
	display: grid;
	place-items: center;
	width: 38px;
	height: 38px;
	border-radius: 12px;
	background: var(--paper-2);
	color: var(--ink-2);
}

.pr-gate__eyebrow { margin: 0 0 6px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ochre); }
.pr-gate__title { margin: 0; font-family: var(--font-display); font-size: 1.625rem; line-height: 1.15; letter-spacing: -0.01em; }
.pr-gate__sub { margin: 10px 0 0; color: var(--ink-2); font-size: 0.9375rem; }
.pr-gate__form { display: grid; gap: 12px; margin-top: 18px; }
.pr-gate__actions { margin-top: 18px; }
.pr-gate__foot { margin: 4px 0 0; text-align: center; font-size: 0.9rem; color: var(--ink-2); }
.pr-gate__foot a { font-weight: 600; color: var(--ink); }

/* Адаптив ----------------------------------------------------------------- */

@media (max-width: 900px) {
	.pr-layout { grid-template-columns: 1fr; }
	.pr-side { position: static; }
}

@media (max-width: 640px) {
	.pr-head__title { max-width: none; }
	.pr-viewer { border-radius: 14px; }
	.pr-viewer__mark { font-size: 0.7rem; }
	.pr-viewer__full { display: none; }
	.pr-facts { grid-template-columns: 1fr 1fr; }
	.pr-gate { align-items: end; padding: 0; }
	.pr-gate__panel { width: 100%; max-height: 92vh; border-radius: 24px 24px 0 0; padding: 26px 20px 22px; transform: translateY(30px); }
}

/* Правки за дослідженням ------------------------------------------------ */

.pr-head__chips {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin: 14px 0 0;
	padding: 0;
	list-style: none;
}

.pr-head__chips li {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 5px 11px;
	border-radius: 999px;
	background: var(--ochre-tint);
	color: var(--ochre-tint-ink);
	font-size: 0.85rem;
	font-weight: 600;
}

.pr-viewer__hint { font-size: 0.8rem; color: var(--ink-4); }

.pr-thumbs {
	display: flex;
	gap: 8px;
	padding: 10px 12px 12px;
	overflow-x: auto;
	background: var(--paper);
	border-top: 1px solid var(--line-soft);
	scrollbar-width: thin;
}

.pr-thumb {
	position: relative;
	flex: none;
	width: 96px;
	padding: 0;
	border: 2px solid transparent;
	border-radius: 8px;
	overflow: hidden;
	background: var(--paper-2);
	cursor: pointer;
}

.pr-thumb canvas { display: block; width: 100%; height: auto; }
.pr-thumb span {
	position: absolute;
	left: 6px;
	bottom: 4px;
	padding: 0 6px;
	border-radius: 999px;
	background: rgba(25, 33, 46, 0.75);
	color: #fff;
	font-size: 0.7rem;
	font-weight: 600;
}

.pr-thumb.is-active { border-color: var(--ochre); }

.pr-gate__cover {
	display: flex;
	align-items: center;
	gap: 12px;
	margin: 0 0 16px;
	padding: 8px;
	border: 1px solid var(--line);
	border-radius: 14px;
	background: var(--card);
}

.pr-gate__cover img { width: 96px; height: 54px; object-fit: cover; border-radius: 8px; flex: none; }
.pr-gate__cover span { font-weight: 600; font-size: 0.9375rem; line-height: 1.3; }

.pr-gate__pass { position: relative; display: block; }
.pr-gate__pass .z-input { padding-right: 46px; }
.pr-gate__eye {
	position: absolute;
	right: 8px;
	top: 50%;
	transform: translateY(-50%);
	display: grid;
	place-items: center;
	width: 34px;
	height: 34px;
	border-radius: 8px;
	color: var(--ink-3);
}

.pr-gate__legal { margin: 2px 0 0; font-size: 0.78rem; color: var(--ink-3); text-align: center; }
.pr-gate__legal a { color: var(--ink-2); }

.pr-filters__toggle {
	display: none;
	align-items: center;
	gap: 8px;
	cursor: pointer;
	list-style: none;
	font-weight: 600;
}

.pr-filters__toggle::-webkit-details-marker { display: none; }

.pr-sticky .z-btn .z-icon { margin-right: 6px; }

@media (max-width: 760px) {
	.pr-filters__toggle { display: flex; }
	.pr-filters:not([open]) .pr-filters__group { display: none; }
	.pr-thumbs { display: none; }
	.pr-viewer__hint { display: none; }
}