/* ==========================================================================
   Footer Styles - SEO Pages (Batch 0 Foundation Gate)
   ==========================================================================

   4-column layout: brand / development / SEO & AEO / company.

   Editorial warm-charcoal background (not cold near-black). Top gradient
   blends warm brown-tinted charcoal into a slightly darker base, which gives
   the abrupt cream→footer transition a true intentional feel rather than a
   default SaaS dark band. All colors reference the footer token set in
   design-system.css — no raw rgba here.
   ========================================================================== */

.site-footer {
	position: relative;
	color: var(--color-footer-body);
	background:
		linear-gradient(
			to bottom,
			var(--color-footer-bg-gradient-top) 0%,
			var(--color-footer-bg) 45%
		);
	isolation: isolate;
}

/* Subtle top-edge teal glow — signals brand without shouting. */
.site-footer::before {
	content: "";
	position: absolute;
	inset: 0 0 auto 0;
	height: 1px;
	background: linear-gradient(
		90deg,
		transparent 0%,
		var(--color-brand) 35%,
		var(--color-brand) 65%,
		transparent 100%
	);
	opacity: 0.45;
	pointer-events: none;
}

.site-footer__inner {
	display: grid;
	grid-template-columns: 1.2fr 1fr 1fr 1fr;
	gap: clamp(2rem, 1.5rem + 2vw, 4rem);
	max-width: var(--container-max);
	margin: 0 auto;
	padding: clamp(3.5rem, 2.5rem + 3vw, 5.5rem) var(--space-xl) var(--space-3xl);
}

/* ── Brand Column ── */

.site-footer__brand {
	display: flex;
	flex-direction: column;
	gap: var(--space-lg);
	align-items: flex-start;
}

.site-footer__logo {
	display: inline-block;
	line-height: 0;
}

.site-footer__logo img {
	height: 34px;
	width: auto;
	display: block;
}

.site-footer__tagline {
	font-family: var(--font-body);
	color: var(--color-footer-tagline);
	font-size: 0.9375rem;
	line-height: 1.6;
	max-width: 300px;
	margin: 0;
}

.site-footer__chat {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	padding: 0.625rem 1.25rem;
	background-color: var(--color-brand);
	color: var(--color-white);
	font-family: var(--font-body);
	font-size: 0.9375rem;
	font-weight: 600;
	text-decoration: none;
	border-radius: var(--radius-pill);
	transition:
		filter 180ms var(--ease-spring),
		transform 180ms var(--ease-spring),
		box-shadow 180ms var(--ease-spring);
	box-shadow: var(--shadow-footer-chat);
}

.site-footer__chat:hover,
.site-footer__chat:focus-visible {
	filter: brightness(1.1);
	transform: translateY(-1px);
	box-shadow: var(--shadow-footer-chat-hover);
	outline: none;
}

.site-footer__chat:focus-visible {
	outline: 2px solid var(--color-white);
	outline-offset: 3px;
}

.site-footer__chat svg {
	transition: transform 180ms var(--ease-spring);
}

.site-footer__chat:hover svg,
.site-footer__chat:focus-visible svg {
	transform: translateX(2px);
}

/* ── Link Columns ── */

.site-footer__col {
	display: flex;
	flex-direction: column;
	gap: var(--space-lg);
}

.site-footer__heading {
	font-family: var(--font-body);
	font-size: 0.75rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.16em;
	color: var(--color-footer-heading);
	margin: 0;
}

.footer-nav-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

.footer-nav-list a {
	color: var(--color-footer-link);
	font-family: var(--font-body);
	font-size: 0.9375rem;
	font-weight: 500;
	text-decoration: none;
	transition: color 180ms var(--ease-spring);
}

.footer-nav-list a:hover,
.footer-nav-list a:focus-visible {
	color: var(--color-footer-link-hover);
	outline: none;
}

.footer-nav-list a:focus-visible {
	outline: 2px solid var(--color-brand);
	outline-offset: 3px;
	border-radius: 2px;
}

/* ── Bottom Bar ── */

.site-footer__bottom {
	border-top: 1px solid var(--color-footer-hairline);
	padding: var(--space-lg) var(--space-xl);
}

.site-footer__bottom-inner {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-md);
	max-width: var(--container-max);
	margin: 0 auto;
}

.site-footer__copyright {
	font-family: var(--font-body);
	font-size: 0.8125rem;
	font-weight: 400;
	color: var(--color-footer-copyright);
	margin: 0;
	flex: 1 1 auto;
}

.site-footer__meta {
	font-family: var(--font-body);
	font-size: 0.8125rem;
	font-weight: 500;
	letter-spacing: 0.04em;
	color: var(--color-footer-meta);
	margin: 0;
}

.site-footer__legal {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	gap: var(--space-lg);
}

.site-footer__legal a {
	font-family: var(--font-body);
	font-size: 0.8125rem;
	font-weight: 500;
	color: var(--color-footer-copyright);
	text-decoration: none;
	transition: color 180ms var(--ease-spring);
}

.site-footer__legal a:hover,
.site-footer__legal a:focus-visible {
	color: var(--color-footer-link-hover);
	outline: none;
}

.site-footer__legal a:focus-visible {
	outline: 2px solid var(--color-brand);
	outline-offset: 3px;
	border-radius: 2px;
}

/* ── Tablet (balanced 2x2, brand stays full-width top) ── */

@media (max-width: 960px) {
	.site-footer__inner {
		grid-template-columns: 1fr 1fr;
		gap: var(--space-3xl) var(--space-2xl);
	}

	.site-footer__brand {
		grid-column: 1 / -1;
		max-width: 520px;
	}
}

/* ── Mobile ── */

@media (max-width: 560px) {
	.site-footer__inner {
		grid-template-columns: 1fr;
		gap: var(--space-2xl);
		padding: var(--space-2xl) var(--space-md) var(--space-xl);
	}

	.site-footer__brand {
		grid-column: auto;
		max-width: none;
	}

	.site-footer__bottom {
		padding: var(--space-md);
	}

	.site-footer__bottom-inner {
		flex-direction: column;
		align-items: flex-start;
		text-align: left;
	}

	.site-footer__legal {
		gap: var(--space-md);
	}
}