/* ===========================================================================
   Case study — single (single-case_study.php)
   A readable success-story article: hero, metrics strip, body, pull-quote,
   CTA band. Sibling to journal.css. Accent driven by --cs-accent per story.
   ========================================================================= */

.bublr-cs {
	--cs-accent: var(--mint-green);
	background: var(--cream);
	padding: calc(var(--nav-height) + 56px) 0 0;
}

.bublr-cs__inner {
	max-width: 760px;
	margin: 0 auto;
	padding: 0 var(--container-pad);
}

/* ---- Back link ---------------------------------------------------------- */
.bublr-cs__back {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: 0.8rem;
	letter-spacing: 0.02em;
	color: var(--grey-4);
	text-decoration: none;
	margin-bottom: 32px;
	transition: color 0.2s var(--ease-soft);
}

.bublr-cs__back:hover {
	color: var(--black);
}

/* ---- Head --------------------------------------------------------------- */
.bublr-cs__cat {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--mint-deep);
	background: color-mix(in srgb, var(--cs-accent) 22%, transparent);
	padding: 6px 12px;
	border-radius: 999px;
	text-decoration: none;
	margin-bottom: 20px;
	transition: background 0.2s var(--ease-soft);
}

.bublr-cs__cat:hover {
	background: color-mix(in srgb, var(--cs-accent) 38%, transparent);
}

.bublr-cs__title {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: clamp(2rem, 5vw, 3.1rem);
	line-height: 1.08;
	letter-spacing: -0.02em;
	color: var(--black);
}

.bublr-cs__client {
	font-family: var(--font-mono);
	font-size: 0.85rem;
	letter-spacing: 0.02em;
	color: var(--mint-deep);
	margin-top: 18px;
}

.bublr-cs__standfirst {
	font-size: clamp(1.05rem, 2.2vw, 1.3rem);
	line-height: 1.55;
	color: var(--grey-4);
	margin-top: 18px;
}

/* ---- Rule --------------------------------------------------------------- */
.bublr-cs__rule {
	height: 4px;
	width: 64px;
	border-radius: 4px;
	background: var(--cs-accent);
	margin: 32px 0;
}

/* ---- Cover -------------------------------------------------------------- */
.bublr-cs__cover {
	border-radius: 20px;
	overflow: hidden;
	margin-bottom: 8px;
	box-shadow: 0 24px 60px -28px rgba(10, 11, 14, 0.4);
}

.bublr-cs__cover img {
	display: block;
	width: 100%;
	height: auto;
}

/* ---- Metrics strip ------------------------------------------------------ */
.bublr-cs__metrics {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
	gap: 1px;
	background: rgba(10, 11, 14, 0.08);
	border: 1px solid rgba(10, 11, 14, 0.08);
	border-radius: 18px;
	overflow: hidden;
	margin: 40px 0;
}

.bublr-cs__metric {
	background: #fff;
	padding: 28px 24px;
	text-align: center;
}

.bublr-cs__metric-figure {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: clamp(1.8rem, 4vw, 2.6rem);
	line-height: 1;
	letter-spacing: -0.02em;
	color: var(--mint-deep);
}

.bublr-cs__metric-label {
	font-size: 0.9rem;
	color: var(--grey-4);
	margin-top: 10px;
	line-height: 1.4;
}

/* ---- Body --------------------------------------------------------------- */
.bublr-cs__body {
	font-size: 1.08rem;
	line-height: 1.75;
	color: #1f2430;
}

.bublr-cs__body > * + * {
	margin-top: 1.4em;
}

.bublr-cs__body h2,
.bublr-cs__body h3 {
	font-family: var(--font-head);
	font-weight: 700;
	letter-spacing: -0.015em;
	color: var(--black);
	margin-top: 1.8em;
}

.bublr-cs__body h2 {
	font-size: clamp(1.4rem, 3vw, 1.85rem);
}

.bublr-cs__body h3 {
	font-size: clamp(1.2rem, 2.5vw, 1.45rem);
}

.bublr-cs__body a {
	color: var(--mint-deep);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.bublr-cs__body img {
	border-radius: 16px;
	max-width: 100%;
	height: auto;
}

.bublr-cs__body blockquote {
	border-left: 3px solid var(--cs-accent);
	padding-left: 22px;
	color: var(--grey-4);
	font-style: italic;
}

.bublr-cs__body ul,
.bublr-cs__body ol {
	padding-left: 1.3em;
}

.bublr-cs__body li + li {
	margin-top: 0.5em;
}

/* ---- Pull-quote --------------------------------------------------------- */
.bublr-cs__quote {
	position: relative;
	margin: 56px 0;
	padding: 40px 32px 40px 56px;
	background: color-mix(in srgb, var(--cs-accent) 12%, var(--cream));
	border-radius: 22px;
}

.bublr-cs__quote::before {
	content: "\201C";
	position: absolute;
	top: 4px;
	left: 22px;
	font-family: var(--font-head);
	font-weight: 700;
	font-size: 4rem;
	line-height: 1;
	color: var(--cs-accent);
}

.bublr-cs__quote blockquote {
	font-family: var(--font-head);
	font-weight: 600;
	font-size: clamp(1.3rem, 3vw, 1.7rem);
	line-height: 1.4;
	letter-spacing: -0.015em;
	color: var(--black);
}

.bublr-cs__quote figcaption {
	font-family: var(--font-mono);
	font-size: 0.82rem;
	letter-spacing: 0.02em;
	color: var(--mint-deep);
	margin-top: 18px;
}

/* ---- CTA band ----------------------------------------------------------- */
.bublr-cs__cta {
	margin-top: 72px;
	background: var(--black);
	color: #fff;
}

.bublr-cs__cta-inner {
	max-width: 760px;
	margin: 0 auto;
	padding: 72px var(--container-pad);
	text-align: center;
}

.bublr-cs__cta .sec-eyebrow {
	color: var(--mint-green);
	justify-content: center;
}

.bublr-cs__cta h2 {
	font-family: var(--font-head);
	font-weight: 700;
	font-size: clamp(1.8rem, 4.5vw, 2.8rem);
	line-height: 1.1;
	letter-spacing: -0.02em;
	margin-top: 14px;
}

.bublr-cs__cta p {
	color: rgba(255, 255, 255, 0.72);
	font-size: 1.05rem;
	max-width: 460px;
	margin: 18px auto 30px;
}

/* ---- Responsive --------------------------------------------------------- */
@media (max-width: 600px) {
	.bublr-cs {
		padding-top: calc(var(--nav-height) + 32px);
	}

	.bublr-cs__quote {
		padding: 32px 22px 32px 22px;
	}

	.bublr-cs__quote::before {
		display: none;
	}

	.bublr-cs__cta-inner {
		padding: 56px var(--container-pad);
	}
}