/* ======================================================
   SINGLE UNITAT — capçalera, hero, objectius, body, slides, dossier
   ====================================================== */

.unit-page {
	max-width: var(--maxw);
	margin: 0 auto;
	padding: 64px var(--gutter) 96px;
}

/* ----- META ROW (capçalera) ----- */
.unit-meta-row {
	display: grid;
	grid-template-columns: 200px 1fr;
	gap: 32px;
	align-items: baseline;
	padding-bottom: 40px;
	border-bottom: 2px solid var(--ink);
}
.unit-meta-row__num {
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--grey-2);
	border-top: 2px solid var(--ink);
	padding-top: 12px;
}
.unit-meta-row__kicker {
	display: block;
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--accent);
	margin-bottom: 14px;
}
.unit-meta-row__title {
	font-family: var(--display);
	font-weight: 600;
	font-size: clamp(44px, 6vw, 96px);
	line-height: 0.96;
	letter-spacing: -0.04em;
	margin: 0 0 20px;
}
.unit-meta-row__lede {
	font-family: var(--sans);
	font-weight: 400;
	font-size: clamp(17px, 1.5vw, 22px);
	line-height: 1.45;
	color: var(--grey-3);
	letter-spacing: -0.005em;
	max-width: 64ch;
	margin: 0;
}
.unit-meta-row__pills {
	margin-top: 20px;
	display: flex;
	flex-wrap: wrap;
	gap: 8px 12px;
}
@media (max-width: 900px) {
	.unit-meta-row { grid-template-columns: 1fr; gap: 16px; }
}

/* ----- HERO ----- */
.unit-hero {
	margin: 48px 0 16px;
	padding: 0;
}
.unit-hero__img {
	display: block;
	width: 100%;
	height: 100%;
	aspect-ratio: 16 / 9;
	object-fit: cover;
	object-position: center;
}
.unit-hero__cap {
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--grey-2);
	margin-top: 10px;
}

/* ----- OBJECTIUS ----- */
.unit-objectives {
	margin: 56px 0 0;
	padding: 32px;
	background: var(--paper);
	border: 1px solid var(--line);
}
.unit-objectives__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 16px;
	margin-bottom: 20px;
	padding-bottom: 14px;
	border-bottom: 1px solid var(--line);
}
.unit-objectives__title {
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--ink);
	margin: 0;
}
.unit-objectives__count {
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: 0.18em;
	color: var(--accent);
	text-transform: uppercase;
}
.unit-objectives__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: repeat( auto-fit, minmax(280px, 1fr) );
	gap: 14px 32px;
	counter-reset: psobj;
}
.unit-objectives__list li {
	counter-increment: psobj;
	display: flex;
	gap: 14px;
	font-family: var(--sans);
	font-size: 15px;
	line-height: 1.5;
	color: var(--ink);
}
.unit-objectives__list li::before {
	content: counter(psobj, decimal-leading-zero);
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.1em;
	color: var(--accent);
	flex-shrink: 0;
	width: 24px;
	padding-top: 4px;
	font-weight: 500;
}

/* ----- BODY (TOC + content) ----- */
.unit-body {
	display: grid;
	grid-template-columns: 240px 1fr;
	gap: 56px;
	margin-top: 64px;
}
@media (max-width: 900px) {
	.unit-body { grid-template-columns: 1fr; gap: 24px; }
}

/* TOC */
.unit-toc-wrap {
	position: relative;
}
.unit-toc {
	position: sticky;
	top: 28px;
	border-top: 2px solid var(--ink);
	padding-top: 14px;
}
.unit-toc__title {
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--grey-2);
	margin: 0 0 14px;
}
.unit-toc__list {
	list-style: none;
	padding: 0;
	margin: 0;
	counter-reset: psitoc;
	display: flex;
	flex-direction: column;
	gap: 0.55em;
}
.unit-toc__list li {
	counter-increment: psitoc;
	display: flex;
	gap: 10px;
}
.unit-toc__list li::before {
	content: counter(psitoc, decimal-leading-zero);
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.1em;
	color: var(--grey-2);
	padding-top: 0.25em;
	flex-shrink: 0;
	width: 22px;
}
.unit-toc__list a {
	font-family: var(--sans);
	font-size: 14px;
	font-weight: 500;
	line-height: 1.35;
	letter-spacing: -0.005em;
	color: var(--ink);
	text-decoration: none;
}
.unit-toc__list a:hover { color: var(--accent); }
@media (max-width: 900px) {
	.unit-toc { position: static; padding: 16px 0 24px; }
}

/* Contingut */
.unit-content {
	font-family: var(--sans);
	font-size: 17px;
	line-height: 1.6;
	color: var(--ink);
}
.unit-content p,
.unit-content ul,
.unit-content ol {
	margin: 0 0 1.1em;
	max-width: 68ch;
}
.unit-content ul,
.unit-content ol {
	padding-inline-start: 2em;
}
.unit-content li {
	margin-bottom: 0.4em;
	padding-left: 0.25em;
}
.unit-content li::marker {
	color: var(--accent);
}
/* Llistes imbricades: sagnia addicional */
.unit-content li ul,
.unit-content li ol {
	margin-top: 0.5em;
	margin-bottom: 0.5em;
}
.unit-content h2 {
	font-family: var(--display);
	font-weight: 600;
	font-size: clamp(28px, 3vw, 40px);
	line-height: 1.05;
	letter-spacing: -0.03em;
	margin: 2em 0 0.4em;
	scroll-margin-top: 84px;
}
.unit-content h2::before {
	content: "§ ";
	font-family: var(--mono);
	font-size: 0.4em;
	letter-spacing: 0.12em;
	color: var(--accent);
	vertical-align: 0.35em;
	margin-right: 0.4em;
}
.unit-content h3 {
	font-family: var(--display);
	font-weight: 600;
	font-size: 22px;
	line-height: 1.15;
	letter-spacing: -0.02em;
	margin: 1.6em 0 0.4em;
	scroll-margin-top: 84px;
}
.unit-content strong { font-weight: 700; }
.unit-content a {
	color: var(--accent);
	text-decoration-thickness: 1px;
	text-underline-offset: 0.2em;
}
.unit-content a:hover { color: var(--accent-deep); }
.unit-content blockquote {
	border-left: 3px solid var(--accent);
	margin: 1.6em 0;
	padding: 0.4em 1.2em;
	color: var(--grey-3);
}
.unit-content figure {
	margin: 32px 0;
	padding: 16px;
	background: var(--paper);
	border: 1px solid var(--line);
	max-width: 100%;
	page-break-inside: avoid;
	break-inside: avoid;
}
.unit-content figure img {
	display: block;
	width: 100%;
	height: auto;
	background: var(--white);
}
.unit-content figcaption {
	margin-top: 12px;
	padding-top: 8px;
	border-top: 1px solid var(--line);
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--grey-2);
}

/* ======================================================
   DOSSIER D'EXERCICIS
   ====================================================== */
.dossier {
	margin-top: 80px;
	padding-top: 48px;
	border-top: 2px solid var(--ink);
}
.dossier__head {
	display: grid;
	grid-template-columns: 200px 1fr;
	gap: 32px;
	align-items: baseline;
	margin-bottom: 32px;
}
@media (max-width: 900px) {
	.dossier__head { grid-template-columns: 1fr; gap: 16px; }
}
.dossier__num {
	font-family: var(--mono);
	font-size: 11px;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--grey-2);
	border-top: 2px solid var(--ink);
	padding-top: 12px;
}
.dossier__title {
	font-family: var(--display);
	font-weight: 600;
	font-size: clamp(32px, 3.8vw, 48px);
	line-height: 1.05;
	letter-spacing: -0.03em;
	margin: 0;
}

/* Filtres */
.dossier__filters {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin: 24px 0 32px;
	padding: 16px;
	background: var(--paper);
	border: 1px solid var(--line);
}
.filter-chip {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 7px 14px;
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--ink);
	background: var(--white);
	border: 1px solid var(--line);
	cursor: pointer;
	line-height: 1.4;
	transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.filter-chip:hover,
.filter-chip:focus-visible {
	color: var(--accent);
	border-color: var(--accent);
	outline: none;
}
.filter-chip[aria-pressed="true"] {
	background: var(--ink);
	color: var(--white);
	border-color: var(--ink);
}
.filter-chip__count {
	font-family: var(--mono);
	font-size: 9px;
	letter-spacing: 0.1em;
	color: var(--grey-2);
}
.filter-chip[aria-pressed="true"] .filter-chip__count { color: var(--white); opacity: 0.7; }

/* Sumari */
.sumari {
	margin-bottom: 48px;
	border: 1px solid var(--line);
}
.sumari__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 16px;
	padding: 14px 18px;
	border-bottom: 1px solid var(--line);
	background: var(--paper);
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--ink);
}
.sumari__counter { color: var(--accent); }
.sumari__list {
	list-style: none;
	margin: 0;
	padding: 0;
}
.sumari__item a {
	display: flex;
	align-items: baseline;
	gap: 14px;
	padding: 12px 18px;
	border-bottom: 1px solid var(--line-soft);
	text-decoration: none;
	color: var(--ink);
	transition: background 0.15s;
}
.sumari__item:last-child a { border-bottom: none; }
.sumari__item a:hover { background: var(--paper); }
.sumari__item--hidden { display: none; }
.sumari__num {
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.14em;
	color: var(--grey-2);
	flex-shrink: 0;
	width: 36px;
}
.sumari__name {
	flex: 1;
	font-family: var(--sans);
	font-size: 15px;
	letter-spacing: -0.005em;
	font-weight: 500;
}
.sumari__nivell {
	font-family: var(--mono);
	font-size: 9px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--grey-2);
	flex-shrink: 0;
}
.sumari__nivell--basic     { color: var(--ink); }
.sumari__nivell--adaptat   { color: var(--accent); }
.sumari__nivell--ampliacio { color: var(--ink); font-weight: 700; }

/* Fitxes individuals */
.dossier__pages {
	display: flex;
	flex-direction: column;
	gap: 32px;
}
.dossier-page {
	border: 1px solid var(--line);
	background: var(--white);
}
.dossier-page--hidden { display: none; }
.dossier-page__rail {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 12px 18px;
	border-bottom: 1px solid var(--line);
	background: var(--paper);
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--grey-2);
}
.dossier-page__inner { padding: 24px 28px 28px; }
.dossier-page__title {
	font-family: var(--display);
	font-weight: 600;
	font-size: clamp(22px, 2vw, 28px);
	line-height: 1.1;
	letter-spacing: -0.02em;
	margin: 0 0 12px;
}
.dossier-page__excerpt {
	font-family: var(--sans);
	font-size: 14px;
	line-height: 1.55;
	color: var(--grey-3);
	margin: 0 0 16px;
	max-width: 64ch;
}
.dossier-page__embed {
	position: relative;
	aspect-ratio: 1 / 1.414; /* A4 */
	background: var(--paper);
	border: 1px solid var(--line);
	max-height: 900px;
}
.dossier-page__embed iframe {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	border: 0;
}
.dossier-page__placeholder {
	display: flex;
	align-items: center;
	justify-content: center;
	aspect-ratio: 1 / 1.414;
	max-height: 900px;
	background: repeating-linear-gradient(
		var(--paper),
		var(--paper) 32px,
		var(--line-soft) 32px,
		var(--line-soft) 33px
	);
	border: 1px solid var(--line);
	font-family: var(--mono);
	font-size: 10px;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--grey-2);
}
.dossier-page__actions {
	margin-top: 16px;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.dossier__empty {
	padding: 64px 32px;
	text-align: center;
	font-family: var(--sans);
	color: var(--grey-2);
	border: 1px dashed var(--line);
}

/* Wrapper 16:9 net — sense fons fosc ni borders interns */
.ps-slides__frame {
	position: relative;
	aspect-ratio: 16 / 9;
	background: var(--white);
	border: 1px solid var(--line);
	overflow: hidden;
}
.ps-slides__iframe {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	border: 0;
	background: var(--white);
}

.ps-slides__actions {
	margin-top: 16px;
	padding-left: 4px;
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
}



/* ======================================================
   SLIDES — embed de Google Slides amb rm=minimal
   ====================================================== */
.unit-slides {
	margin-top: 80px;
	padding-top: 48px;
	border-top: 2px solid var(--ink);
}
.unit-slides__title {
	font-family: var(--display);
	font-weight: 600;
	font-size: clamp(32px, 3.8vw, 48px);
	line-height: 1.05;
	letter-spacing: -0.03em;
	margin: 0 0 24px;
}
.unit-slides__embed {
	position: relative;
	width: 100%;
	aspect-ratio: 16 / 9;
	background: var(--white);
	border: 1px solid var(--line);
	overflow: hidden;
}
.unit-slides__embed iframe {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	border: 0;
	background: var(--white);
}
.unit-slides__actions {
	margin-top: 16px;
	padding-left: 4px;
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
}

@media print {
	.unit-slides { display: none !important; }
}