/* Responsive layout + mobile menu — loaded last, after page styles */

html, body { overflow-x: clip; }
img { max-width: 100%; }

/* ---------- Desktop navigation ---------- */

.main-nav__extra { display: none; }

.main-nav__link { position: relative; }

.main-nav__link[aria-current='page']::after {
    position: absolute;
    right: 0;
    bottom: -8px;
    left: 0;
    height: 2px;
    border-radius: 2px;
    content: '';
    background: var(--gold);
}

/* ---------- Hamburger button ---------- */

.menu-toggle {
    position: relative;
    z-index: 2;
    place-items: center;
    width: 46px;
    height: 46px;
    padding: 0;
    transition: background 220ms ease, border-color 220ms ease;
}

.menu-toggle span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 1.5px;
    margin: 0;
    border-radius: 2px;
    transition: transform 320ms cubic-bezier(.2, .7, .2, 1), background 220ms ease, width 220ms ease;
}

.menu-toggle span:first-child { transform: translate(-50%, -4px); }
.menu-toggle span:last-child { width: 12px; transform: translate(calc(-50% + 3px), 3px); }
.menu-toggle:hover span:last-child { width: 18px; transform: translate(-50%, 3px); }

.menu-toggle[aria-expanded='true'] span:first-child { width: 18px; transform: translate(-50%, 0) rotate(45deg); }
.menu-toggle[aria-expanded='true'] span:last-child { width: 18px; transform: translate(-50%, 0) rotate(-45deg); }

.menu-toggle:focus-visible,
.main-nav a:focus-visible,
.header-cta:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ---------- 1100px and below: full-screen menu ---------- */

@media (max-width: 1100px) {
    .site-header { min-height: 72px; gap: 12px; padding-right: 20px; padding-left: 20px; }
    .wordmark { position: relative; z-index: 2; }
    .header-cta { display: none; }
    .menu-toggle { display: grid; order: 3; margin-left: auto; }

    .main-nav {
        position: fixed;
        inset: 0;
        z-index: 1;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 104px 24px 32px;
        overflow-y: auto;
        overscroll-behavior: contain;
        border: 0;
        box-shadow: none;
        background:
            radial-gradient(70% 45% at 100% 0%, rgba(var(--coral-rgb), .58), transparent 70%),
            radial-gradient(60% 40% at 0% 100%, rgba(var(--gold-rgb), .16), transparent 70%),
            var(--forest-deep);
        counter-reset: nav;
        visibility: hidden;
        opacity: 0;
        clip-path: circle(0% at calc(100% - 43px) 36px);
        transition: clip-path 560ms cubic-bezier(.6, 0, .2, 1), opacity 200ms ease, visibility 0s linear 560ms;
    }

    .main-nav.is-open {
        visibility: visible;
        opacity: 1;
        clip-path: circle(150% at calc(100% - 43px) 36px);
        transition: clip-path 620ms cubic-bezier(.6, 0, .2, 1), opacity 120ms ease, visibility 0s;
    }

    .main-nav .main-nav__link,
    body .site-header .main-nav .main-nav__link {
        display: flex;
        align-items: baseline;
        gap: 16px;
        padding: 18px 0;
        border-bottom: 1px solid rgba(255, 255, 255, .1);
        color: #fff;
        font-family: var(--display);
        font-size: clamp(24px, 6vw, 38px);
        font-weight: 600;
        letter-spacing: -.02em;
        line-height: 1.1;
        opacity: 0;
        transform: translateY(18px);
        transition: opacity 400ms ease, transform 500ms cubic-bezier(.2, .7, .2, 1), color 200ms ease;
        counter-increment: nav;
    }

    .main-nav__link::before {
        content: counter(nav, decimal-leading-zero);
        color: var(--gold);
        font-family: 'Instrument Serif', Georgia, serif;
        font-size: 18px;
        font-style: italic;
        font-weight: 400;
    }

    .main-nav__link[aria-current='page']::after {
        position: static;
        width: 8px;
        height: 8px;
        margin-left: auto;
        border-radius: 50%;
        align-self: center;
    }

    body .site-header .main-nav .main-nav__link:hover,
    body .site-header .main-nav .main-nav__link[aria-current='page'] { color: var(--gold-soft); }

    body .site-header .main-nav.is-open .main-nav__link { opacity: 1; transform: none; }
    .main-nav.is-open .main-nav__link:nth-child(1) { transition-delay: 160ms; }
    .main-nav.is-open .main-nav__link:nth-child(2) { transition-delay: 220ms; }
    .main-nav.is-open .main-nav__link:nth-child(3) { transition-delay: 280ms; }
    .main-nav.is-open .main-nav__link:nth-child(4) { transition-delay: 340ms; }

    .main-nav__extra {
        display: grid;
        gap: 18px;
        margin-top: auto;
        padding-top: 40px;
        opacity: 0;
        transition: opacity 400ms ease 400ms;
    }

    .main-nav.is-open .main-nav__extra { opacity: 1; }

    body .site-header .main-nav .main-nav__cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 12px;
        min-height: 56px;
        padding: 0 24px;
        border: 0;
        border-radius: 999px;
        color: var(--night);
        background: linear-gradient(135deg, var(--gold-soft), var(--gold));
        font-size: 15px;
        font-weight: 700;
        text-decoration: none;
    }

    .main-nav__extra p { margin: 0; color: rgba(255, 243, 245, .55); font-size: 12px; text-align: center; }

    /* Header on top of the open menu */
    body.menu-open { overflow: hidden; }

    body.menu-open .site-header {
        border-bottom-color: transparent !important;
        background: transparent !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    body.menu-open .site-header .wordmark__text { color: #fff !important; }
    body.menu-open .site-header .wordmark__text span { color: var(--gold) !important; }
    body.menu-open .site-header .menu-toggle { border-color: rgba(255, 255, 255, .3) !important; background: rgba(255, 255, 255, .06); }
    body.menu-open .site-header .menu-toggle span { background: #fff !important; }
}

/* ---------- Tablet layout ---------- */

@media (max-width: 900px) {
    .section-heading { flex-wrap: wrap; }
    .transport-grid, .package-catalogue { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .package { grid-template-columns: 1fr; }
    .package__visual { min-height: 280px; }
    .itinerary-detail { grid-template-columns: 1fr; }
    .itinerary-detail__note { grid-column: 1; }
}

/* ---------- Small phones ---------- */

@media (max-width: 680px) {
    .site-header { min-height: 68px; }
    .main-nav { padding-top: 96px; }
    .transport-grid, .package-catalogue { grid-template-columns: 1fr; }
    .transport-item { grid-template-columns: 1fr; }
    .transport-item img { min-height: 0; aspect-ratio: 1.5; }
}

@media (max-width: 380px) {
    .wordmark__text { font-size: 13px; }
    .main-nav .main-nav__link { font-size: 28px; }
}

@media (prefers-reduced-motion: reduce) {
    .main-nav, .main-nav.is-open { transition: none; }
}