/* ==========================================================================
   Düzen: kapsayıcı, bölümler, header, navigasyon, footer, sayfa başlığı
   ========================================================================== */

.wrap {
	width: 100%;
	max-width: calc(var(--wrap) + 2 * var(--gutter));
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.grid {
	display: grid;
	grid-template-columns: repeat(12, minmax(0, 1fr));
	column-gap: var(--gutter);
}

.section {
	padding-block: var(--section-y);
}

.section--tight {
	padding-block: calc(var(--section-y) * 0.6);
}

.section--line {
	border-top: 1px solid var(--c-line);
}

.section--deep {
	background: var(--c-paper-deep);
}

.on-ink {
	background: var(--c-ink);
	color: var(--c-on-ink);
}

.section-head {
	display: grid;
	gap: var(--s-4);
	margin-bottom: var(--s-8);
	max-width: 52rem;
}

.section-head p {
	color: var(--c-muted);
	font-size: var(--fs-400);
	line-height: 1.5;
	max-width: 40em;
}

.on-ink .section-head p {
	color: var(--c-on-ink-muted);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
	position: sticky;
	top: 0;
	z-index: 50;
	background: var(--c-paper);
	border-bottom: 1px solid transparent;
	transition: border-color 0.2s var(--ease);
}

.site-header.is-scrolled,
.nav-open .site-header {
	border-bottom-color: var(--c-line);
}

.site-header__inner {
	display: flex;
	align-items: center;
	gap: var(--s-6);
	height: var(--header-h);
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.625rem;
	color: var(--c-ink);
	text-decoration: none;
	flex-shrink: 0;
}

.brand__mark {
	width: 2rem;
	height: 2rem;
}

.brand__text {
	display: flex;
	align-items: baseline;
	gap: 0.35em;
	font-size: 1.1875rem;
	line-height: 1;
	white-space: nowrap;
}

.brand__name {
	font-weight: 800;
	font-stretch: 120%;
	letter-spacing: -0.01em;
}

.brand__suffix {
	font-weight: 420;
	font-stretch: 100%;
	color: var(--c-muted);
}

.main-nav {
	margin-left: auto;
}

.main-nav__list {
	display: flex;
	align-items: center;
	gap: clamp(1rem, 0.2rem + 1.2vw, 1.75rem);
}

.main-nav__item {
	position: relative;
	display: flex;
	align-items: center;
}

.main-nav__link {
	display: inline-block;
	padding-block: 0.5rem;
	font-size: var(--fs-200);
	font-weight: 520;
	text-decoration: none;
	white-space: nowrap;
	box-shadow: inset 0 -2px 0 transparent;
	transition: box-shadow 0.15s var(--ease);
}

.main-nav__link:hover {
	box-shadow: inset 0 -2px 0 var(--c-ink);
}

.main-nav__link[aria-current="page"],
.main-nav__link.is-active {
	box-shadow: inset 0 -3px 0 var(--c-accent);
}

.sub-toggle {
	display: inline-grid;
	place-items: center;
	width: 1.5rem;
	height: 1.75rem;
	margin-left: 0.125rem;
	padding: 0;
	border: 0;
	background: none;
	color: var(--c-muted);
}

.sub-toggle svg {
	width: 0.7rem;
	height: 0.7rem;
	transition: transform 0.2s var(--ease);
}

.main-nav__item.is-open .sub-toggle svg {
	transform: rotate(180deg);
}

.subnav {
	position: absolute;
	top: 100%;
	left: -1.5rem;
	width: min(40rem, 80vw);
	padding-top: 1rem;
	visibility: hidden;
	opacity: 0;
	transform: translateY(-4px);
	transition: opacity 0.15s var(--ease), transform 0.15s var(--ease), visibility 0s linear 0.15s;
}

.main-nav__item.is-open .subnav {
	visibility: visible;
	opacity: 1;
	transform: none;
	transition: opacity 0.15s var(--ease), transform 0.15s var(--ease), visibility 0s;
}

@media (hover: hover) and (min-width: 75.001rem) {
	.main-nav__item--sub:hover .subnav {
		visibility: visible;
		opacity: 1;
		transform: none;
		transition: opacity 0.15s var(--ease), transform 0.15s var(--ease), visibility 0s;
	}
}

.subnav__panel {
	background: var(--c-paper);
	border: 1px solid var(--c-line);
	border-top: 3px solid var(--c-ink);
	padding: var(--s-5);
	box-shadow: 0 18px 40px -24px rgba(41, 49, 51, 0.45);
}

.subnav__list {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: var(--s-2) var(--s-5);
}

.subnav__link {
	display: block;
	padding: var(--s-3) 0;
	border-bottom: 1px solid var(--c-line);
	text-decoration: none;
}

.subnav__title {
	display: block;
	font-weight: 650;
	line-height: 1.25;
}

.subnav__desc {
	display: block;
	margin-top: 0.2rem;
	font-size: var(--fs-100);
	line-height: 1.4;
	color: var(--c-muted);
}

.subnav__link:hover .subnav__title {
	text-decoration: underline;
	text-underline-offset: 0.2em;
}

.subnav__all {
	display: inline-block;
	margin-top: var(--s-4);
	font-size: var(--fs-200);
	font-weight: 600;
}

.header-tools {
	display: flex;
	align-items: center;
	gap: var(--s-5);
}

.lang-switch {
	display: flex;
	gap: 0.125rem;
	font-size: var(--fs-100);
	font-weight: 600;
	letter-spacing: 0.02em;
}

.lang-switch a {
	display: inline-grid;
	place-items: center;
	min-width: 2.25rem;
	height: 2rem;
	padding-inline: 0.35rem;
	color: var(--c-muted);
	text-decoration: none;
	border: 1px solid transparent;
}

.lang-switch a:hover {
	color: var(--c-ink);
	border-color: var(--c-line);
}

.lang-switch a[aria-current="true"] {
	color: var(--c-ink);
	border-color: var(--c-ink);
}

.nav-toggle {
	display: none;
	align-items: center;
	gap: 0.6rem;
	height: 2.5rem;
	padding: 0 0.9rem;
	border: 1px solid var(--c-ink);
	background: transparent;
	font-size: var(--fs-200);
	font-weight: 600;
}

.nav-toggle__icon {
	position: relative;
	width: 1.1rem;
	height: 0.7rem;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
	content: "";
	position: absolute;
	left: 0;
	right: 0;
	height: 2px;
	background: currentColor;
	transition: transform 0.2s var(--ease), top 0.2s var(--ease);
}

.nav-toggle__icon::before { top: 0; }
.nav-toggle__icon::after { top: calc(100% - 2px); }

.nav-open .nav-toggle__icon::before { top: calc(50% - 1px); transform: rotate(45deg); }
.nav-open .nav-toggle__icon::after { top: calc(50% - 1px); transform: rotate(-45deg); }

.main-nav__extra {
	display: none;
}

/* Mobil / tablet navigasyon */
@media (max-width: 75rem) {
	.nav-toggle {
		display: inline-flex;
	}

	.header-tools {
		margin-left: auto;
	}

	.main-nav {
		position: fixed;
		inset: var(--header-h) 0 0 0;
		z-index: 49;
		display: none;
		overflow-y: auto;
		overscroll-behavior: contain;
		background: var(--c-paper);
		padding: var(--s-5) var(--gutter) var(--s-8);
	}

	.nav-open .main-nav {
		display: block;
	}

	.nav-open {
		overflow: hidden;
	}

	.main-nav__list {
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		max-width: 40rem;
	}

	.main-nav__item {
		flex-wrap: wrap;
		border-bottom: 1px solid var(--c-line);
	}

	.main-nav__link {
		flex: 1;
		padding-block: 0.9rem;
		font-size: var(--fs-500);
		font-weight: 650;
		font-stretch: 104%;
	}

	.main-nav__link:hover,
	.main-nav__link[aria-current="page"],
	.main-nav__link.is-active {
		box-shadow: none;
	}

	.main-nav__link[aria-current="page"]::after,
	.main-nav__link.is-active::after {
		content: "";
		display: inline-block;
		width: 0.5rem;
		height: 0.5rem;
		margin-left: 0.6rem;
		vertical-align: middle;
		background: var(--c-accent);
	}

	.sub-toggle {
		width: 3rem;
		height: 3rem;
		color: var(--c-ink);
	}

	.sub-toggle svg {
		width: 0.9rem;
		height: 0.9rem;
	}

	.subnav {
		position: static;
		display: none;
		width: 100%;
		padding: 0 0 var(--s-4);
		visibility: visible;
		opacity: 1;
		transform: none;
		transition: none;
	}

	.main-nav__item.is-open .subnav {
		display: block;
	}

	.subnav__panel {
		border: 0;
		padding: 0;
		box-shadow: none;
	}

	.subnav__list {
		grid-template-columns: 1fr;
		gap: 0;
	}

	.subnav__link {
		border-bottom: 0;
		padding: 0.55rem 0 0.55rem var(--s-4);
		border-left: 2px solid var(--c-line);
	}

	.subnav__desc {
		display: none;
	}

	.main-nav__extra {
		display: grid;
		gap: var(--s-5);
		margin-top: var(--s-6);
		max-width: 40rem;
	}

	.main-nav__extra .lang-switch {
		font-size: var(--fs-200);
	}

	.header-tools .lang-switch {
		display: none;
	}
}

@media (max-width: 40rem) {
	.header-tools .btn {
		display: none;
	}

	.brand__text {
		font-size: 1.0625rem;
	}

	.brand__mark {
		width: 1.75rem;
		height: 1.75rem;
	}
}

/* --------------------------------------------------------------------------
   Sayfa başlığı ve brotkrumen
   -------------------------------------------------------------------------- */

.page-head {
	padding-block: clamp(2.5rem, 1.5rem + 4vw, 5.5rem) clamp(2.5rem, 1.5rem + 3vw, 4.5rem);
	border-bottom: 1px solid var(--c-line);
}

.page-head__title {
	max-width: 18ch;
}

.page-head__lead {
	margin-top: var(--s-5);
	color: var(--c-ink);
}

.breadcrumb {
	margin-bottom: var(--s-5);
	font-size: var(--fs-100);
	color: var(--c-muted);
}

.breadcrumb ol {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 0.25rem 0;
}

.breadcrumb li + li::before {
	content: "/";
	margin-inline: 0.5rem;
	color: var(--c-line-strong);
}

.breadcrumb a {
	color: var(--c-muted);
}

.breadcrumb [aria-current] {
	color: var(--c-ink);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
	background: var(--c-ink);
	color: var(--c-on-ink);
	padding-top: var(--s-9);
	font-size: var(--fs-200);
}

.site-footer a {
	color: var(--c-on-ink);
	text-decoration: none;
}

.site-footer a:hover {
	text-decoration: underline;
}

.site-footer__grid {
	display: grid;
	grid-template-columns: repeat(12, minmax(0, 1fr));
	gap: var(--s-7) var(--gutter);
	padding-bottom: var(--s-8);
}

.site-footer__about {
	grid-column: span 4;
}

.site-footer__about .brand {
	color: var(--c-on-ink);
}

.site-footer__about .brand__suffix {
	color: var(--c-on-ink-muted);
}

.site-footer__about p {
	margin-top: var(--s-5);
	color: var(--c-on-ink-muted);
	max-width: 30ch;
}

.site-footer__col {
	grid-column: span 2;
}

.site-footer__col--wide {
	grid-column: span 4;
}

.site-footer__heading {
	margin-bottom: var(--s-4);
	font-size: var(--fs-200);
	font-weight: 650;
	color: var(--c-on-ink);
}

.site-footer__list li + li {
	margin-top: 0.55rem;
}

.site-footer__list a,
.site-footer address {
	color: var(--c-on-ink-muted);
}

.site-footer address {
	font-style: normal;
	line-height: 1.7;
}

.site-footer .is-placeholder {
	color: var(--c-on-ink-muted);
	font-style: italic;
	opacity: 0.8;
}

.site-footer__bottom {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: var(--s-4) var(--s-6);
	padding-block: var(--s-5);
	border-top: 1px solid var(--c-line-on-ink);
	color: var(--c-on-ink-muted);
	font-size: var(--fs-100);
}

.site-footer__legal {
	display: flex;
	gap: var(--s-5);
}

.site-footer__legal a {
	color: var(--c-on-ink-muted);
}

@media (max-width: 64rem) {
	.site-footer__about { grid-column: 1 / -1; }
	.site-footer__col { grid-column: span 4; }
	.site-footer__col--wide { grid-column: span 4; }
}

@media (max-width: 40rem) {
	.site-footer__col,
	.site-footer__col--wide { grid-column: 1 / -1; }
}

.site-footer__cta {
	margin-top: var(--s-4);
}

.main-nav__item--mobile-only {
	display: none;
}

@media (max-width: 75rem) {
	.main-nav__item--mobile-only {
		display: flex;
	}
}