/* ===========================================================================
   Case studies — archive / category index (archive-case_study.php)
   Hero header + responsive card grid. Sibling to journal.css. Per-card accent
   via --cs-accent.
   ========================================================================= */

.bublr-cs-archive {
	background: var(--cream);
	padding-bottom: 96px;
}

.bublr-cs-archive__inner {
	max-width: var(--container-max);
	margin: 0 auto;
	padding: 0 var(--container-pad);
}

/* ---- Hero header -------------------------------------------------------- */
.bublr-cs-archive__head {
	padding: calc(var(--nav-height) + 72px) 0 56px;
	text-align: center;
}

.bublr-cs-archive__head .sec-eyebrow {
	justify-content: center;
}

.bublr-cs-archive__head h1 {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: clamp(2.2rem, 5.5vw, 3.6rem);
	line-height: 1.08;
	letter-spacing: -0.025em;
	color: var(--black);
	max-width: 16ch;
	margin: 14px auto 0;
}

.bublr-cs-archive__head p {
	font-size: clamp(1.05rem, 2.2vw, 1.25rem);
	line-height: 1.55;
	color: var(--grey-4);
	max-width: 60ch;
	margin: 20px auto 0;
}

/* ---- Card grid ---------------------------------------------------------- */
.bublr-cscard-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
	gap: 28px;
}

.bublr-cscard {
	--cs-accent: var(--mint-green);
	display: flex;
	flex-direction: column;
	background: #fff;
	border: 1px solid rgba(10, 11, 14, 0.07);
	border-radius: 22px;
	overflow: hidden;
	text-decoration: none;
	color: inherit;
	transition:
		transform 0.3s var(--ease-soft),
		box-shadow 0.3s var(--ease-soft),
		border-color 0.3s var(--ease-soft);
}

.bublr-cscard:hover {
	transform: translateY(-4px);
	box-shadow: 0 26px 50px -28px rgba(10, 11, 14, 0.38);
	border-color: color-mix(in srgb, var(--cs-accent) 55%, transparent);
}

.bublr-cscard__img {
	position: relative;
	aspect-ratio: 16 / 10;
	background-color: color-mix(in srgb, var(--cs-accent) 18%, var(--cream));
	background-size: cover;
	background-position: center;
	display: flex;
	align-items: center;
	justify-content: center;
}

.bublr-cscard__img-fallback {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: 3rem;
	color: color-mix(in srgb, var(--cs-accent) 70%, var(--mint-deep));
	opacity: 0.7;
}

.bublr-cscard__body {
	display: flex;
	flex-direction: column;
	flex: 1;
	padding: 26px 24px 28px;
}

.bublr-cscard__tag {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--mint-deep);
}

.bublr-cscard__body h3 {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: 1.25rem;
	line-height: 1.2;
	letter-spacing: -0.015em;
	color: var(--black);
	margin-top: 12px;
}

.bublr-cscard__body p {
	font-size: 0.95rem;
	line-height: 1.55;
	color: var(--grey-4);
	margin-top: 12px;
}

.bublr-cscard__more {
	font-family: var(--font-mono);
	font-size: 0.8rem;
	font-weight: 600;
	letter-spacing: 0.02em;
	color: var(--mint-deep);
	margin-top: auto;
	padding-top: 20px;
	transition: gap 0.2s var(--ease-soft);
}

.bublr-cscard:hover .bublr-cscard__more {
	color: var(--mint-deep);
	text-decoration: underline;
	text-underline-offset: 3px;
}

/* ---- Empty state -------------------------------------------------------- */
.bublr-cs-archive__empty {
	text-align: center;
	max-width: 560px;
	margin: 24px auto 0;
	padding: 56px 32px;
	background: #fff;
	border: 1px solid rgba(10, 11, 14, 0.07);
	border-radius: 24px;
}

.bublr-cs-archive__empty h2 {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: clamp(1.5rem, 4vw, 2rem);
	line-height: 1.12;
	letter-spacing: -0.02em;
	color: var(--black);
}

.bublr-cs-archive__empty p {
	font-size: 1.05rem;
	line-height: 1.55;
	color: var(--grey-4);
	margin: 16px auto 28px;
}

/* ---- Pagination --------------------------------------------------------- */
.bublr-cs-pagination {
	margin-top: 56px;
}

.bublr-cs-pagination .nav-links {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	justify-content: center;
}

.bublr-cs-pagination .page-numbers {
	font-family: var(--font-mono);
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--black);
	background: #fff;
	border: 1px solid rgba(10, 11, 14, 0.1);
	border-radius: 999px;
	padding: 8px 16px;
	text-decoration: none;
	transition:
		background 0.2s var(--ease-soft),
		border-color 0.2s var(--ease-soft);
}

.bublr-cs-pagination .page-numbers:hover,
.bublr-cs-pagination .page-numbers.current {
	background: var(--mint-green);
	border-color: var(--mint-green);
}

/* ---- Responsive --------------------------------------------------------- */
@media (max-width: 600px) {
	.bublr-cs-archive__head {
		padding-top: calc(var(--nav-height) + 40px);
	}

	.bublr-cscard-grid {
		grid-template-columns: 1fr;
		gap: 20px;
	}
}