/* --- Site Header --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 84px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.site-header.is-scrolled {
    height: 84px;
    background: #FFFFFF;
    box-shadow: var(--shadow-sm);
}

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

/* Logo */
.site-logo {
    flex-shrink: 0;
    text-decoration: none;
    z-index: 10;
    display: flex;
    align-items: center;
}

.site-logo__img {
    height: 60px;
    width: auto;
    object-fit: contain;
    display: block;
    transition: height 0.3s ease;
}

.site-header.is-scrolled .site-logo__img {
    height: 60px;
}

.mobile-nav__logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    display: block;
}

/* --- Desktop Navigation --- */
.primary-nav {
    display: none;
    height: 100%;
}

@media (min-width: 1024px) {
    .primary-nav {
        display: block;
    }

    .nav-list {
        display: flex;
        gap: 32px;
        list-style: none;
        margin: 0;
        padding: 0;
        height: 100%;
    }

    .nav-list>li {
        position: relative;
        display: flex;
        align-items: center;
        height: 100%;
    }

    .nav-list>li>a {
        font-family: var(--font-body);
        font-size: 15px;
        font-weight: 500;
        color: var(--color-text-primary);
        text-decoration: none;
        padding: 12px 0;
        transition: color 0.3s ease;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .nav-list>li>a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background: var(--color-primary);
        transform: scaleX(0);
        transition: transform 0.3s ease;
        transform-origin: right;
    }

    .nav-list>li:hover>a {
        color: var(--color-primary);
    }

    .nav-list>li:hover>a::after {
        transform: scaleX(1);
        transform-origin: left;
    }

    /* Chevron Styling */
    .menu-chevron {
        display: inline-flex;
        transition: transform 0.3s ease;
    }

    .nav-list>li:hover>a>.menu-chevron {
        transform: rotate(180deg);
    }

    /* Sub-menu (Level 2 & 3) */
    .sub-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 260px;
        background: #FFFFFF;
        box-shadow: var(--shadow-lg);
        border-radius: var(--radius-md);
        padding: 12px 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: all 0.3s ease;
        list-style: none;
        border: 1px solid var(--color-divider);
    }

    .sub-menu .sub-menu {
        top: 0;
        left: 100%;
        transform: translateX(10px);
    }

    .nav-list li:hover>.sub-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0) translateX(0);
    }

    .sub-menu a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 12px 24px;
        font-size: 14px;
        font-weight: 500;
        color: var(--color-text-secondary);
        text-decoration: none;
        transition: all 0.2s ease;
    }

    .sub-menu a:hover {
        background: var(--color-surface);
        color: var(--color-primary);
        padding-left: 28px;
    }

    .menu-chevron--right {
        margin-left: auto;
    }
}

/* --- Header Actions --- */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Hide Enquire button on mobile header */
@media (max-width: 1023px) {
    .header-cta {
        display: none !important;
    }
}

/* Hamburger */
.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    color: var(--color-text-primary);
    transition: var(--transition-base);
    z-index: 2001;
}

@media (min-width: 1024px) {
    .hamburger {
        display: none;
    }
}

.hamburger:hover {
    color: var(--color-primary);
}

.hamburger svg {
    width: 28px;
    height: 28px;
    transition: transform 0.3s ease;
}

.hamburger.is-active svg {
    transform: rotate(90deg);
}

/* --- Mobile Navigation Overlay --- */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #FFFFFF;
    z-index: 3000;
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    visibility: hidden;
}

.mobile-nav.is-active {
    transform: translateX(0);
    visibility: visible;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav:not(.is-active) {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s linear 0.4s;
}

.mobile-nav__header {
    padding: 20px var(--container-px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-divider);
    height: 84px;
}

.mobile-nav__close {
    background: none;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: 10px;
}

.mobile-nav__content {
    flex: 1;
    overflow-y: auto;
    padding: 24px var(--container-px);
}

.mobile-nav__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav__list li {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.mobile-nav__list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
    font-family: var(--font-body);
    font-size: 18px;
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.mobile-nav__list .dropdown-toggle {
    display: flex;
    padding: 8px;
    transition: transform 0.3s ease;
}

.mobile-nav__list .is-open>a>.dropdown-toggle {
    transform: rotate(180deg);
}

/* Mobile Sub-menus */
.mobile-nav__list .sub-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
    padding-left: 20px;
    background: var(--color-surface);
}

.mobile-nav__list .is-open>.sub-menu {
    max-height: 2000px;
    margin-bottom: 10px;
}

.mobile-nav__list .sub-menu a {
    font-family: var(--font-body);
    font-size: 16px;
    padding: 14px 0;
    color: var(--color-text-secondary);
}

.mobile-nav__footer {
    padding: 32px var(--container-px);
    border-top: 1px solid var(--color-divider);
    background: #FFFFFF;
}

.mobile-nav__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    z-index: 2500;
    /* Between header and mobile nav */
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav__overlay.is-active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.4s ease;
}

.mobile-nav__overlay:not(.is-active) {
    transition: opacity 0.4s ease, visibility 0s linear 0.4s;
}