/* ==========================================================================
   Viltgroen — Header: Transparent->Solid, Blur Transition, Scroll State
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: transparent;
    transition: background var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
}

.header--scrolled {
    background: var(--c-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--s-24);
}

/* Logo */
.header__logo {
    display: flex;
    align-items: center;
}

.header__logo img,
.header__logo svg {
    height: 28px;
    width: auto;
}

/* Desktop Nav */
.header__nav {
    display: none;
    align-items: center;
    gap: var(--s-32);
}

.header__nav a {
    font-family: var(--f-body);
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--c-text-dim);
    text-decoration: none;
    transition: color var(--dur) var(--ease);
    letter-spacing: 0.5px;
}

.header__nav a:hover,
.header__nav a.is-active {
    color: var(--c-white);
}

/* Utility nav (Reserveer button) */
.header__utility {
    display: none;
    align-items: center;
    margin-left: var(--s-24);
}

.header__utility .btn {
    font-size: 0.6875rem;
    padding: var(--s-8) var(--s-16);
}

/* Hamburger — 2 spans */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 24px;
    height: var(--header-h);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger__line {
    display: block;
    width: 24px;
    height: 1px;
    background: var(--c-white);
    transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

/* Hamburger open state → X */
.hamburger.is-active .hamburger__line:nth-child(1) {
    transform: translateY(3.5px) rotate(45deg);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background: var(--c-bg);
    padding: calc(var(--header-h) + var(--s-32)) var(--s-24) var(--s-32);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
    overflow-y: auto;
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: var(--s-24);
}

.mobile-menu__nav a {
    font-family: var(--f-heading);
    font-size: 1.75rem;
    font-weight: 300;
    color: var(--c-text);
    text-decoration: none;
    transition: color var(--dur) var(--ease);
}

.mobile-menu__nav a:hover {
    color: var(--c-white);
}

.mobile-menu__cta {
    margin-top: var(--s-48);
}

.mobile-menu__cta .btn {
    width: 100%;
    text-align: center;
}