/*
    Navigation
    Porsche 911 Experience
*/
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled {
    background: rgba(5, 5, 5, 0.75);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: .45em;
    color: var(--color-white);
}

/* Hamburger */
.menu-toggle {
    width: 48px;
    height: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Fullscreen Menu */
.fullscreen-menu {
    position: fixed;
    inset: 0;
    background: rgba(5, 5, 5, .97);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-30px);
    transition: var(--transition);
    z-index: 900;
}

.fullscreen-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.menu-inner {
    width: min(100% - 48px, 900px);
    transform: scale(clamp(.75, 1vw, 1));
}

.menu-inner ul {
    max-height: 75vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.menu-inner li {
    overflow: hidden;
}

.menu-inner a {
    display: block;
    font-size: clamp(1.8rem, 3.5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -.04em;
    padding: .12em 0;
    transition: var(--transition);
}

.menu-inner a:hover {
    color: var(--color-gold);
    transform: translateX(20px);

}

.menu-footer {
    margin-top: 60px;
    color: var(--color-text);
    letter-spacing: .15em;
    text-transform: uppercase;
    font-size: .8rem;
}