/**
 * Terrakuta — classic header models.
 *
 * .tk-header            shared bar
 * Models:
 *   model-transparent     fixed, transparent over hero, ivory text
 *   model-solid-ivory     static warm ivory bar, black text
 *   model-solid-black     static architectural black bar, ivory text
 *   model-centered        centered logo + nav below
 *   model-overlay-burger  logo + burger, fullscreen terracotta overlay
 */

/* -------------------------------------------------------------------- */
/* Shared                                                               */
/* -------------------------------------------------------------------- */

.tk-header {
	position: relative;
	z-index: 900;
	font-family: var(--tk-font-body);
}

.tk-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 32px;
	width: 100%;
	max-width: var(--tk-container);
	margin: 0 auto;
	padding: 20px var(--tk-gutter);
}

.tk-logo {
	display: inline-flex;
	align-items: center;
	font-family: var(--tk-font-headline);
	font-size: 1.375rem;
	font-weight: 600;
	letter-spacing: 0.32em;
	text-transform: uppercase;
	color: currentColor;
}

.tk-logo img {
	display: block;
	max-height: 56px;
	width: auto;
}

/* Menu */
.tk-menu {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px 32px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.tk-menu a {
	display: inline-block;
	padding: 6px 0;
	font-size: 12px;
	font-weight: 500;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: currentColor;
	opacity: 0.85;
}

.tk-menu a:hover {
	opacity: 1;
	color: currentColor;
}

.tk-menu .menu-item-has-children {
	position: relative;
}

.tk-menu .sub-menu {
	position: absolute;
	top: 100%;
	left: -16px;
	min-width: 220px;
	margin: 0;
	padding: 12px 0;
	background: var(--tk-ivory);
	border-top: 2px solid var(--tk-black);
	box-shadow: 0 18px 48px rgba(17, 17, 17, 0.12);
	list-style: none;
	opacity: 0;
	visibility: hidden;
	transform: translateY(8px);
	transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}

.tk-menu .menu-item-has-children:hover > .sub-menu,
.tk-menu .menu-item-has-children:focus-within > .sub-menu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.tk-menu .sub-menu a {
	padding: 8px 24px;
	letter-spacing: 0.08em;
	color: var(--tk-black);
}

/* -------------------------------------------------------------------- */
/* Model: transparent (fixed over hero)                                 */
/* -------------------------------------------------------------------- */

.tk-header--transparent {
	position: fixed;
	inset: 0 0 auto 0;
	color: var(--tk-ivory);
	background: transparent;
	transition: background-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
}

.tk-header--transparent .tk-menu .sub-menu {
	color: var(--tk-black);
}

.tk-header--transparent.is-scrolled {
	background: var(--tk-ivory);
	color: var(--tk-black);
	box-shadow: 0 1px 0 rgba(17, 17, 17, 0.1);
}

/* -------------------------------------------------------------------- */
/* Model: solid ivory / solid black                                     */
/* -------------------------------------------------------------------- */

.tk-header--solid-ivory {
	background: var(--tk-ivory);
	color: var(--tk-black);
	box-shadow: 0 1px 0 rgba(17, 17, 17, 0.1);
}

.tk-header--solid-black {
	background: var(--tk-black);
	color: var(--tk-ivory);
}

.tk-header--solid-black .tk-menu .sub-menu {
	background: var(--tk-black);
}

.tk-header--solid-black .tk-menu .sub-menu a {
	color: var(--tk-ivory);
}

/* -------------------------------------------------------------------- */
/* Model: centered                                                       */
/* -------------------------------------------------------------------- */

.tk-header--centered {
	background: var(--tk-ivory);
	color: var(--tk-black);
	box-shadow: 0 1px 0 rgba(17, 17, 17, 0.1);
}

.tk-header--centered .tk-header__inner {
	flex-direction: column;
	gap: 12px;
	padding-top: 32px;
	padding-bottom: 0;
}

.tk-header--centered .tk-menu {
	justify-content: center;
	border-top: 1px solid rgba(17, 17, 17, 0.1);
	padding: 14px 0;
	width: 100%;
}

/* -------------------------------------------------------------------- */
/* Model: overlay burger                                                 */
/* -------------------------------------------------------------------- */

.tk-header--overlay-burger {
	position: fixed;
	inset: 0 0 auto 0;
	color: var(--tk-ivory);
}

.tk-header--overlay-burger .tk-header__inner {
	padding: 24px var(--tk-gutter);
}

.tk-burger {
	position: relative;
	z-index: 1001;
	display: inline-flex;
	flex-direction: column;
	justify-content: center;
	gap: 7px;
	width: 44px;
	height: 44px;
	padding: 10px;
	background: transparent;
	border: 1px solid rgba(246, 240, 235, 0.4);
	cursor: pointer;
}

.tk-burger span {
	display: block;
	width: 100%;
	height: 1.5px;
	background: var(--tk-ivory);
	transition: transform 0.35s var(--tk-ease), opacity 0.25s ease, background-color 0.35s ease;
}

body.tk-overlay-open .tk-burger span:nth-child(1) { transform: translateY(8.5px) rotate(45deg); }
body.tk-overlay-open .tk-burger span:nth-child(2) { opacity: 0; }
body.tk-overlay-open .tk-burger span:nth-child(3) { transform: translateY(-8.5px) rotate(-45deg); }

.tk-overlay {
	position: fixed;
	inset: 0;
	z-index: 1000;
	display: flex;
	flex-direction: column;
	justify-content: center;
	padding: 0 var(--tk-gutter);
	background: var(--tk-terracotta);
	color: var(--tk-ivory);
	opacity: 0;
	visibility: hidden;
	transition: opacity 0.45s var(--tk-ease), visibility 0.45s;
}

body.tk-overlay-open .tk-overlay {
	opacity: 1;
	visibility: visible;
}

.tk-overlay .tk-menu {
	flex-direction: column;
	align-items: flex-start;
	gap: 12px;
}

.tk-overlay .tk-menu a {
	font-family: var(--tk-font-headline);
	font-size: clamp(2rem, 6vw, 3.5rem);
	letter-spacing: 0.04em;
	text-transform: none;
	opacity: 0;
	transform: translateY(24px);
	transition: opacity 0.5s var(--tk-ease), transform 0.5s var(--tk-ease), color 0.3s ease;
}

body.tk-overlay-open .tk-overlay .tk-menu a {
	opacity: 1;
	transform: none;
}

body.tk-overlay-open .tk-overlay .tk-menu li:nth-child(1) a { transition-delay: 0.08s; }
body.tk-overlay-open .tk-overlay .tk-menu li:nth-child(2) a { transition-delay: 0.14s; }
body.tk-overlay-open .tk-overlay .tk-menu li:nth-child(3) a { transition-delay: 0.2s; }
body.tk-overlay-open .tk-overlay .tk-menu li:nth-child(4) a { transition-delay: 0.26s; }
body.tk-overlay-open .tk-overlay .tk-menu li:nth-child(5) a { transition-delay: 0.32s; }
body.tk-overlay-open .tk-overlay .tk-menu li:nth-child(6) a { transition-delay: 0.38s; }

.tk-overlay .sub-menu {
	display: none;
}

/* -------------------------------------------------------------------- */
/* Responsive (shared)                                                   */
/* -------------------------------------------------------------------- */

@media (max-width: 900px) {
	.tk-header:not(.tk-header--overlay-burger) .tk-menu {
		display: none;
	}

	.tk-header--centered .tk-header__inner {
		flex-direction: row;
		justify-content: space-between;
		padding-top: 20px;
	}

	/* Collapse to burger on small screens for bar models. */
	.tk-header:not(.tk-header--overlay-burger) .tk-burger {
		display: inline-flex;
		border-color: currentColor;
	}

	.tk-header:not(.tk-header--overlay-burger) .tk-burger span {
		background: currentColor;
	}

	body.tk-overlay-open .tk-burger span {
		background: var(--tk-ivory);
	}
}

@media (min-width: 901px) {
	.tk-header:not(.tk-header--overlay-burger) .tk-burger {
		display: none;
	}
}