/* ============================================================
   HEADER
============================================================ */

.site-header {
position: fixed;
top: 0;
left: 0;
right: 0;
z-index: 900;
height: var(--header-h);
transition: background-color var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
background-color: rgba(234,229,224,.88);
backdrop-filter: blur(20px) saturate(180%);
-webkit-backdrop-filter: blur(20px) saturate(180%);
box-shadow: 0 1px 0 var(--color-border);
}

.site-header.is-dark-mode {
background-color: transparent;
}

.site-header.is-dark-mode.is-scrolled {
background-color: rgba(42,61,45,.9);
backdrop-filter: blur(20px);
-webkit-backdrop-filter: blur(20px);
}

.header__inner {
display: flex;
align-items: center;
justify-content: space-between;
height: 100%;
max-width: var(--container-max);
margin-inline: auto;
padding-inline: var(--container-px);
}

.header__logo {
display: flex;
align-items: center;
flex-shrink: 0;
}

.header__logo svg {
width: auto;
height: 40px;
transition: opacity var(--transition-fast);
}

.header__logo:hover svg {
opacity: 0.75;
}

.header__nav {
display: flex;
align-items: center;
}

.nav__list {
display: flex;
align-items: center;
gap: clamp(1.5rem, 3vw, 3rem);
}

.nav__item {
position: relative;
}

.nav__link {
display: flex;
flex-direction: column;
overflow: hidden;
height: 1.2em;
font-family: var(--font-ui);
font-size: 0.9rem;
font-weight: 600;
color: var(--color-dark);
transition: color var(--transition-fast);
}

.site-header.is-dark-mode .nav__link {
color: var(--color-cream);
}

.nav__text {
display: block;
transition: transform var(--transition-base);
line-height: 1.2;
}

.nav__text--hover {
color: var(--color-olive);
}

.nav__link:hover .nav__text:first-child {
transform: translateY(-100%);
}

.nav__link:hover .nav__text--hover {
transform: translateY(-100%);
}

.nav__item.is-active .nav__link {
color: var(--color-olive);
}

.nav__item.is-active::after {
content: '';
position: absolute;
bottom: -4px;
left: 0;
right: 0;
height: 2px;
background-color: var(--color-olive);
border-radius: 1px;
}

.header__actions {
display: flex;
align-items: center;
gap: 1.5rem;
}

.header__cta {
padding: 0.6rem 1.5rem;
font-size: 0.85rem;
}

/* ============================================================
   BURGER
============================================================ */

.burger {
display: none;
flex-direction: column;
justify-content: center;
gap: 5px;
width: 40px;
height: 40px;
padding: 8px;
border-radius: var(--radius-sm);
transition: background-color var(--transition-fast);
}

.burger:hover {
background-color: var(--color-border);
}

.burger__line {
display: block;
width: 100%;
height: 1.5px;
background-color: var(--color-dark);
border-radius: 2px;
transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-fast);
transform-origin: center;
}

.site-header.is-dark-mode .burger__line {
background-color: var(--color-cream);
}

.burger[aria-expanded="true"] .burger__line:first-child {
transform: translateY(3.25px) rotate(45deg);
}

.burger[aria-expanded="true"] .burger__line:last-child {
transform: translateY(-3.25px) rotate(-45deg);
}

/* ============================================================
   MOBILE NAV
============================================================ */

.mobile-nav {
position: fixed;
inset: 0;
z-index: 950;
pointer-events: none;
}

.mobile-nav.is-open {
pointer-events: all;
}

.mobile-nav__overlay {
position: absolute;
inset: 0;
background-color: rgba(42,61,45,.5);
opacity: 0;
transition: opacity var(--transition-base);
backdrop-filter: blur(4px);
-webkit-backdrop-filter: blur(4px);
}

.mobile-nav.is-open .mobile-nav__overlay {
opacity: 1;
}

.mobile-nav__panel {
position: absolute;
top: 0;
right: 0;
bottom: 0;
width: min(480px, 90vw);
background-color: var(--color-dark);
display: flex;
flex-direction: column;
padding: 2rem 2.5rem 3rem;
transform: translateX(100%);
transition: transform 0.6s var(--ease-out);
overflow-y: auto;
}

.mobile-nav.is-open .mobile-nav__panel {
transform: translateX(0);
}

.mobile-nav__header {
display: flex;
align-items: center;
justify-content: space-between;
margin-bottom: 3rem;
}

.mobile-nav__logo svg {
height: 36px;
width: auto;
}

.mobile-nav__close {
display: flex;
align-items: center;
justify-content: center;
width: 44px;
height: 44px;
border-radius: 50%;
color: var(--color-cream);
transition: background-color var(--transition-fast), border-radius var(--transition-slow);
}

.mobile-nav__close:hover {
background-color: rgba(255,255,255,.08);
border-radius: var(--radius-organic);
}

.mobile-nav__close svg {
width: 22px;
height: 22px;
}

.mobile-nav__list {
flex: 1;
display: flex;
flex-direction: column;
gap: 0;
}

.mobile-nav__list .menu-item {
border-bottom: 1px solid rgba(255,255,255,.08);
}

.mobile-nav__list .menu-item a {
display: block;
font-family: var(--font-display);
font-size: clamp(1.5rem, 5vw, 2.25rem);
color: var(--color-cream);
padding: 1.1rem 0;
transition: color var(--transition-fast), padding-left var(--transition-base);
}

.mobile-nav__list .menu-item a:hover,
.mobile-nav__list .current-menu-item a {
color: var(--color-olive);
padding-left: 1rem;
}

.mobile-nav__footer {
display: flex;
gap: 1.25rem;
margin-top: 3rem;
}

.mobile-nav__social {
font-family: var(--font-ui);
font-size: 0.75rem;
font-weight: 700;
letter-spacing: 0.1em;
color: rgba(234,229,224,.5);
transition: color var(--transition-fast);
}

.mobile-nav__social:hover {
color: var(--color-olive);
}

/* ============================================================
   PAGE TRANSITION
============================================================ */

.page-transition {
position: fixed;
inset: 0;
z-index: 9999;
pointer-events: none;
}

.page-transition__panel {
position: absolute;
inset: 0;
background-color: var(--color-dark);
transform: translateY(100%);
}

/* ============================================================
   RESPONSIVE HEADER
============================================================ */

@media (max-width: 900px) {
.header__nav {
display: none;
}
.header__cta {
display: none;
}
.burger {
display: flex;
}
}

@media (max-width: 480px) {
.mobile-nav__panel {
width: 100vw;
}
}