/* KC Science Talks: video & shorts library */

.kcv { --kcv-cols: 4; }
.kcv--short { --kcv-cols: 5; }
.kcv-section-head { margin-bottom: 26px; }
.kcv-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 14px;
	margin: 0 0 10px;
	font-family: var(--kc-sans);
	font-size: 13px;
	font-weight: 500;
	letter-spacing: .22em;
	text-transform: uppercase;
	color: var(--kc-rose-deep);
}
.kcv-eyebrow::before { content: ""; width: 34px; height: 1px; background: currentColor; opacity: .7; }
.kcv-h2 { margin: 0; font-family: var(--kc-serif); font-weight: 500; font-size: clamp(28px, 3.2vw, 42px); line-height: 1.15; color: var(--kc-ink); }
.kcv-h2 em { font-style: italic; font-weight: 400; color: var(--kc-rose-deep); }

/* Most viewed */
.kcv-popular { margin-bottom: 90px; }
.kcv-grid--popular { --kcv-cols: 4; }
.kcv--short .kcv-grid--popular { --kcv-cols: 5; }

/* Grid + cards */
.kcv-grid { display: grid; grid-template-columns: repeat(var(--kcv-cols), minmax(0, 1fr)); gap: 30px 24px; }
.kcv-card { display: flex; flex-direction: column; min-width: 0; }
.kcv-card.is-filtered,
.kcv-topic:not(.is-expanded):not(.is-searching) .kcv-card.is-extra { display: none; }

.kcv-thumb {
	position: relative;
	display: block;
	width: 100%;
	padding: 0;
	border: 0;
	border-radius: 14px;
	overflow: hidden;
	background: var(--kc-blush);
	cursor: pointer;
	aspect-ratio: 16 / 9;
	box-shadow: 0 12px 30px -20px rgba(88, 70, 70, .5);
	transition: transform .5s var(--kc-ease), box-shadow .5s var(--kc-ease);
}
.kcv--short .kcv-thumb { aspect-ratio: 9 / 16; border-radius: 16px; }
.kcv-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 1.1s var(--kc-ease); }
.kcv-thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(47, 37, 38, 0) 55%, rgba(47, 37, 38, .45) 100%); }
.kcv-thumb:hover, .kcv-thumb:focus-visible { transform: translateY(-4px); box-shadow: var(--kc-shadow); }
.kcv-thumb:hover img { transform: scale(1.05); }
.kcv-thumb:focus-visible { outline: 3px solid var(--kc-rose); outline-offset: 3px; }

.kcv-playicon {
	position: absolute;
	left: 50%;
	top: 50%;
	z-index: 2;
	width: 54px;
	height: 54px;
	margin: -27px 0 0 -27px;
	border-radius: 50%;
	background: rgba(255, 255, 255, .92) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23C96876' d='M8 5v14l11-7z'/%3E%3C/svg%3E") no-repeat 56% 50% / 24px;
	box-shadow: 0 10px 24px rgba(47, 37, 38, .3);
	opacity: 0;
	transform: scale(.85);
	transition: opacity .35s var(--kc-ease), transform .35s var(--kc-ease);
}
.kcv-thumb:hover .kcv-playicon, .kcv-thumb:focus-visible .kcv-playicon { opacity: 1; transform: none; }
@media (hover: none) { .kcv-playicon { opacity: 1; transform: none; width: 44px; height: 44px; margin: -22px 0 0 -22px; background-size: 20px; } }

.kcv-duration {
	position: absolute;
	right: 10px;
	bottom: 10px;
	z-index: 2;
	padding: 3px 7px;
	border-radius: 4px;
	background: rgba(47, 37, 38, .82);
	color: #fff;
	font: 500 12px/1.2 var(--kc-sans);
	letter-spacing: .04em;
}
.kcv-rank {
	position: absolute;
	left: 14px;
	bottom: 6px;
	z-index: 2;
	font-family: var(--kc-serif);
	font-style: italic;
	font-size: 52px;
	line-height: 1;
	color: #fff;
	text-shadow: 0 4px 18px rgba(47, 37, 38, .55);
}

.kcv-body { padding: 14px 2px 0; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.kcv-title { margin: 0; font-family: var(--kc-sans); font-size: 16px; font-weight: 500; line-height: 1.42; }
.kcv--short .kcv-title { font-size: 15px; }
.kcv-title a {
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
	color: var(--kc-ink);
	text-decoration: none;
	transition: color .25s;
}
.kcv-title a:hover { color: var(--kc-rose-deep); }
.kcv-meta { margin: 0; font-size: 13px; letter-spacing: .02em; color: var(--kc-muted); }
.kcv-yt {
	margin-top: auto;
	align-self: flex-start;
	padding-bottom: 1px;
	font-size: 13px;
	font-weight: 500;
	letter-spacing: .04em;
	color: var(--kc-rose-deep);
	text-decoration: none;
	border-bottom: 1px solid rgba(201, 104, 118, .35);
	transition: color .25s, border-color .25s;
}
.kcv-yt:hover { color: var(--kc-cocoa); border-color: var(--kc-cocoa); }

/* Toolbar: underline tabs + search */
.kcv-toolbar {
	position: sticky;
	top: calc(var(--kc-header-h, 70px) - 1px);
	z-index: 20;
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 14px 28px;
	margin: 0 -16px 40px;
	padding: 14px 16px 0;
	background: rgba(255, 255, 255, .94);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--kc-line);
}
.admin-bar .kcv-toolbar { top: calc(var(--kc-header-h, 70px) + 31px); }
.kcv-tabs { display: flex; flex-wrap: wrap; gap: 0 26px; }
.kcv-tab {
	position: relative;
	padding: 10px 0 16px;
	border: 0;
	background: none;
	font: 500 15px/1.2 var(--kc-sans);
	letter-spacing: .02em;
	color: var(--kc-muted);
	cursor: pointer;
	transition: color .25s;
}
.kcv-tab span { margin-left: 4px; font-size: 12px; color: var(--kc-rose); font-weight: 500; }
.kcv-tab::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--kc-rose-deep); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--kc-ease); }
.kcv-tab:hover { color: var(--kc-ink); }
.kcv-tab.is-active { color: var(--kc-ink); }
.kcv-tab.is-active::after { transform: scaleX(1); }
.kcv-search { margin-bottom: 12px; }
.kcv-search input {
	width: 260px;
	max-width: 100%;
	padding: 11px 14px 11px 38px;
	border: 1px solid var(--kc-line);
	border-radius: 8px;
	background: var(--kc-cream) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238C7A7C' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E") no-repeat 12px 50% / 16px;
	font: 400 15px/1.2 var(--kc-sans);
	color: var(--kc-ink);
	transition: border-color .25s, box-shadow .25s, background-color .25s;
}
.kcv-search input:focus { outline: 0; border-color: var(--kc-rose); background-color: #fff; box-shadow: 0 0 0 4px rgba(232, 142, 152, .18); }

/* Groups + topics */
.kcv-group + .kcv-group { margin-top: 30px; }
.kcv-group-title {
	margin: 0 0 6px;
	font-family: var(--kc-serif);
	font-weight: 500;
	font-size: clamp(26px, 2.6vw, 34px);
	color: var(--kc-ink);
}
.kcv-topic { padding: 26px 0 34px; border-top: 1px solid var(--kc-line); }
.kcv-group-title + .kcv-topic { border-top: 0; }
.kcv-topic-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.kcv-topic-title { margin: 0; font-family: var(--kc-serif); font-style: italic; font-weight: 400; font-size: 22px; color: var(--kc-cocoa); }
.kcv-topic-count { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--kc-muted); white-space: nowrap; }
.kcv-more {
	display: block;
	margin: 26px auto 0;
	padding: 12px 26px;
	border: 1px solid rgba(88, 70, 70, .3);
	border-radius: 6px;
	background: none;
	font: 500 14px/1 var(--kc-sans);
	letter-spacing: .04em;
	color: var(--kc-cocoa);
	cursor: pointer;
	transition: background .3s, color .3s, border-color .3s;
}
.kcv-more:hover { background: var(--kc-cocoa); border-color: var(--kc-cocoa); color: #fff; }
.kcv-noresults, .kcv-empty { padding: 40px 0; text-align: center; color: var(--kc-muted); }
.kcv-updated { margin: 40px 0 0; text-align: center; font-size: 13px; color: var(--kc-muted); }

/* Player */
.kcv-locked, .kcv-locked body { overflow: hidden; }
.kcv-modal { position: fixed; inset: 0; z-index: 100000; display: flex; align-items: center; justify-content: center; padding: 24px; opacity: 0; transition: opacity .25s ease; }
.kcv-modal.is-open { opacity: 1; }
.kcv-modal-backdrop { position: absolute; inset: 0; background: rgba(32, 24, 25, .82); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.kcv-modal-box {
	position: relative;
	width: min(1040px, 100%);
	transform: translateY(14px) scale(.98);
	transition: transform .35s var(--kc-ease);
}
.kcv-modal.is-open .kcv-modal-box { transform: none; }
.kcv-modal-box.is-short { width: min(400px, 100%, calc((100vh - 160px) * 9 / 16)); }
.kcv-modal-frame { position: relative; aspect-ratio: 16 / 9; background: #000; border-radius: 16px; overflow: hidden; box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .7); }
.kcv-modal-box.is-short .kcv-modal-frame { aspect-ratio: 9 / 16; }
.kcv-modal-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.kcv-modal-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 4px 0; color: #fff; }
.kcv-modal-box.is-short .kcv-modal-bar { flex-direction: column; align-items: stretch; gap: 10px; }
.kcv-modal-title { margin: 0; font: 500 16px/1.45 var(--kc-sans); color: rgba(255, 255, 255, .92); }
.kcv-modal-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.kcv-modal-nav {
	width: 40px;
	height: 40px;
	border: 1px solid rgba(255, 255, 255, .35);
	border-radius: 50%;
	background: none;
	color: #fff;
	font-size: 16px;
	cursor: pointer;
	transition: background .25s, opacity .25s;
}
.kcv-modal-nav:hover:not(:disabled) { background: rgba(255, 255, 255, .15); }
.kcv-modal-nav:disabled { opacity: .3; cursor: default; }
.kcv-modal-yt {
	margin-left: 4px;
	padding: 11px 18px;
	border-radius: 6px;
	background: var(--kc-rose-deep);
	color: #fff !important;
	font: 500 14px/1 var(--kc-sans);
	letter-spacing: .03em;
	text-decoration: none;
	white-space: nowrap;
	transition: background .25s;
}
.kcv-modal-yt:hover { background: #fff; color: var(--kc-cocoa) !important; }
.kcv-modal-close {
	position: absolute;
	top: -48px;
	right: 0;
	width: 40px;
	height: 40px;
	border: 0;
	border-radius: 50%;
	background: rgba(255, 255, 255, .14);
	color: #fff;
	font-size: 26px;
	line-height: 1;
	cursor: pointer;
	transition: background .25s;
}
.kcv-modal-close:hover { background: rgba(255, 255, 255, .28); }

@media (max-width: 1100px) {
	.kcv { --kcv-cols: 3; }
	.kcv--short, .kcv--short .kcv-grid--popular { --kcv-cols: 4; }
	.kcv-grid--popular { --kcv-cols: 2; }
}
@media (max-width: 767px) {
	.kcv, .kcv-grid--popular { --kcv-cols: 1; }
	.kcv--short, .kcv--short .kcv-grid--popular { --kcv-cols: 2; }
	.kcv-grid { gap: 26px 14px; }
	.kcv-toolbar { margin: 0 -16px 28px; }
	.kcv-tabs { flex-wrap: nowrap; overflow-x: auto; gap: 0 22px; scrollbar-width: none; width: 100%; }
	.kcv-tabs::-webkit-scrollbar { display: none; }
	.kcv-tab { white-space: nowrap; }
	.kcv-search, .kcv-search input { width: 100%; }
	.kcv-rank { font-size: 40px; }
	.kcv-modal { padding: 60px 12px 16px; }
	.kcv-modal-bar { flex-direction: column; align-items: stretch; }
	.kcv-modal-actions { justify-content: space-between; }
	.kcv-popular { margin-bottom: 60px; }
}

/* ------------------------------------------------------------------
 * State hardening: the theme styles every <button> on :hover/:focus
 * (filled background, white text, pill radius). Pin each control's
 * own look for all interaction states.
 * ------------------------------------------------------------------ */
.kcv button,
.kcv-modal button { -webkit-appearance: none; appearance: none; text-transform: none; box-shadow: none; }

/* Topic tabs */
.kcv .kcv-tab,
.kcv .kcv-tab:hover,
.kcv .kcv-tab:focus,
.kcv .kcv-tab:active { background: none !important; border: 0 !important; border-radius: 0 !important; box-shadow: none !important; outline: 0; }
.kcv .kcv-tab:hover, .kcv .kcv-tab:focus { color: var(--kc-ink); }
.kcv .kcv-tab:not(.is-active):hover::after { transform: scaleX(.35); }
.kcv .kcv-tab:focus-visible { outline: 2px solid var(--kc-rose); outline-offset: 4px; border-radius: 4px !important; }

/* Thumbnails */
.kcv .kcv-thumb,
.kcv .kcv-thumb:hover,
.kcv .kcv-thumb:focus,
.kcv .kcv-thumb:active { background: var(--kc-blush) !important; color: inherit !important; border: 0 !important; border-radius: 14px !important; outline: 0; }
.kcv--short .kcv-thumb, .kcv--short .kcv-thumb:hover, .kcv--short .kcv-thumb:focus, .kcv--short .kcv-thumb:active { border-radius: 16px !important; }
.kcv .kcv-thumb:focus:not(:focus-visible) { transform: none; box-shadow: 0 12px 30px -20px rgba(88, 70, 70, .5); }
.kcv .kcv-thumb:focus:not(:focus-visible) img { transform: none; }
.kcv .kcv-thumb:focus-visible { outline: 3px solid var(--kc-rose); outline-offset: 3px; }

/* "Show all" */
.kcv .kcv-more,
.kcv .kcv-more:focus { background: none !important; color: var(--kc-cocoa) !important; border: 1px solid rgba(88, 70, 70, .3) !important; border-radius: 6px !important; outline: 0; }
.kcv .kcv-more:hover,
.kcv .kcv-more:active { background: var(--kc-cocoa) !important; border-color: var(--kc-cocoa) !important; color: #fff !important; }
.kcv .kcv-more:focus-visible { outline: 2px solid var(--kc-rose); outline-offset: 3px; }

/* Player controls */
.kcv-modal .kcv-modal-nav,
.kcv-modal .kcv-modal-nav:focus { background: none !important; color: #fff !important; border: 1px solid rgba(255, 255, 255, .35) !important; border-radius: 50% !important; padding: 0 !important; outline: 0; }
.kcv-modal .kcv-modal-nav:hover:not(:disabled),
.kcv-modal .kcv-modal-nav:active:not(:disabled) { background: rgba(255, 255, 255, .16) !important; border-color: rgba(255, 255, 255, .6) !important; }
.kcv-modal .kcv-modal-nav:disabled,
.kcv-modal .kcv-modal-nav:disabled:hover { opacity: .3; background: none !important; }
.kcv-modal .kcv-modal-close,
.kcv-modal .kcv-modal-close:focus { background: rgba(255, 255, 255, .14) !important; color: #fff !important; border: 0 !important; border-radius: 50% !important; padding: 0 !important; outline: 0; }
.kcv-modal .kcv-modal-close:hover,
.kcv-modal .kcv-modal-close:active { background: rgba(255, 255, 255, .3) !important; }
.kcv-modal .kcv-modal-nav:focus-visible,
.kcv-modal .kcv-modal-close:focus-visible { outline: 2px solid #FFD9DE; outline-offset: 3px; }
.kcv-modal .kcv-modal-yt:focus { outline: 0; }
.kcv-modal .kcv-modal-yt:focus-visible { outline: 2px solid #FFD9DE; outline-offset: 3px; }

/* Vertical (Shorts) player: keep the whole player + controls inside the viewport,
   and put the close button beside the video so it is never pushed off-screen. */
.kcv-modal-box.is-short { width: min(400px, 100%, calc((100vh - 230px) * 9 / 16)); }
@media (min-width: 768px) {
	.kcv-modal-box.is-short .kcv-modal-close { top: 0; right: -56px; }
}
@media (max-width: 767px) {
	.kcv-modal-box.is-short { width: min(100%, calc((100vh - 250px) * 9 / 16)); }
}

/* ==================================================================
 * Phones: each topic (and "Most viewed") becomes a swipeable row
 * instead of a long grid; toolbar scrolls with the page.
 * ================================================================== */
@media (max-width: 767px) {
	.kcv .kcv-grid {
		display: flex;
		gap: 14px;
		overflow-x: auto;
		overscroll-behavior-x: contain;
		scroll-snap-type: x mandatory;
		scroll-padding-left: 16px;
		margin: 0 -16px;
		padding: 4px 16px 14px;
		scrollbar-width: none;
		-webkit-overflow-scrolling: touch;
	}
	.kcv .kcv-grid::-webkit-scrollbar { display: none; }
	.kcv .kcv-card { flex: 0 0 80%; scroll-snap-align: start; }
	.kcv--short .kcv-card { flex-basis: 44%; }
	.kcv .kcv-topic:not(.is-searching) .kcv-card.is-extra { display: flex; }
	.kcv .kcv-card.is-filtered { display: none; }
	.kcv .kcv-more { display: none !important; }
	.kcv .kcv-topic { padding: 22px 0 18px; }
	.kcv .kcv-topic-head { margin-bottom: 12px; }
	.kcv .kcv-topic-title { font-size: 20px; }
	.kcv .kcv-group-title { font-size: 26px; }
	.kcv .kcv-thumb:hover, .kcv .kcv-thumb:focus-visible { transform: none; }

	.kcv-toolbar { position: relative; top: auto !important; margin: 0 -16px 18px; }
	.kcv-tabs {
		-webkit-mask-image: linear-gradient(to right, #000 82%, transparent);
		mask-image: linear-gradient(to right, #000 82%, transparent);
		padding-right: 40px;
	}
	.kcv-popular { margin-bottom: 44px; }
	.kcv-section-head { margin-bottom: 16px; }
}