.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--color-navy);
    color: var(--color-ivory);
}

.header-inner {
    width: min(
        calc(100% - 2 * var(--page-gutter)),
        var(--max-width)
    );

    margin-inline: auto;

    min-height: 4.35rem;

    display: grid;
    grid-template-columns: auto 1fr auto;

    align-items: center;

    column-gap: var(--space-lg);
}


/* =====================================================
   BRAND
===================================================== */

.brand {
    text-decoration: none;
    color: var(--color-ivory);

    display: flex;
    flex-direction: column;

    gap: 0.12rem;

    min-width: 0;
}

.brand:hover,
.brand:focus-visible {
    color: var(--color-ivory);
}

.brand-name {
    font-family: var(--font-serif);

    font-size: 1.15rem;
    font-weight: 500;

    letter-spacing: -0.01em;
    line-height: 1.1;
}

.brand-tagline {
    font-family: var(--font-sans);

    font-size: 0.5625rem;
    font-weight: 600;

    letter-spacing: 0.16em;
    text-transform: uppercase;

    color: var(--color-ivory);
    opacity: 0.78;
}


/* =====================================================
   PRIMARY NAVIGATION
===================================================== */

.site-nav {
    justify-self: center;
}

.site-nav ul {
    display: flex;
    flex-wrap: wrap;

    justify-content: center;

    gap: 0.35rem 1.35rem;

    list-style: none;

    margin: 0;
    padding: 0;
}

.site-nav a {
    text-decoration: none;
    color: var(--color-ivory);
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--color-ivory);
    opacity: 0.72;
}

.nav-enquire {
    display: none;
}


/* =====================================================
   DESKTOP ENQUIRE BUTTON
===================================================== */

.header-enquire {
    justify-self: end;

    display: inline-flex;
    align-items: center;

    gap: 0.45rem;

    white-space: nowrap;
}

.site-header .button {
    color: var(--color-navy-text);
}

.site-header .button:hover,
.site-header .button:focus-visible {
    color: var(--color-navy-text);
    opacity: 1;
}


/* =====================================================
   PHONE ICON
===================================================== */

.icon-phone {
    width: 0.8rem;
    height: 0.8rem;

    fill: none;

    stroke: currentColor;
    stroke-width: 2;

    stroke-linecap: round;
    stroke-linejoin: round;

    flex-shrink: 0;
}


/* =====================================================
   MOBILE MENU BUTTON
===================================================== */

.nav-toggle {
    display: none;

    width: 2.5rem;
    height: 2.5rem;

    padding: 0;
    margin: 0;

    justify-self: end;

    align-items: center;
    justify-content: center;

    flex-direction: column;

    gap: 0.28rem;

    background: transparent;

    border: 1px solid transparent;
    border-radius: var(--radius);

    cursor: pointer;
}

.nav-toggle-bar {
    display: block;

    width: 1.1rem;
    height: 1px;

    background: var(--color-ivory);

    transition:
        transform var(--duration) var(--ease),
        opacity var(--duration) var(--ease);
}

.nav-toggle[aria-expanded="true"]
.nav-toggle-bar:nth-child(1) {
    transform: translateY(0.34rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"]
.nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"]
.nav-toggle-bar:nth-child(3) {
    transform: translateY(-0.34rem) rotate(-45deg);
}


/* =====================================================
   PROJECTS DROPDOWN
===================================================== */

.nav-projects {
    position: relative;
}

.projects-dropdown {
    position: absolute;

    top: calc(100% + 12px);
    left: 0;

    transform: translateY(8px);

    min-width: 190px;

    margin: 0;
    padding: 8px;

    list-style: none;

    /*
     * HEADER BLUE — 75% OPACITY
     */
    background: rgba(16, 36, 59, 0.75);

    /*
     * Glass effect keeps the dropdown
     * refined without changing its base color.
     */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);

    border: 1px solid rgba(246, 243, 236, 0.12);

    border-radius: 8px;

    box-shadow:
        0 14px 35px rgba(0, 0, 0, 0.22);

    opacity: 0;
    visibility: hidden;

    pointer-events: none;

    transition:
        opacity 180ms ease,
        transform 180ms ease,
        visibility 180ms ease;

    z-index: 1000;
}


/* =====================================================
   DROPDOWN INVISIBLE HOVER BRIDGE
===================================================== */

.projects-dropdown::before {
    content: "";

    position: absolute;

    top: -12px;
    left: 0;

    width: 100%;
    height: 12px;
}


/* =====================================================
   SHOW DROPDOWN
===================================================== */

.nav-projects:hover .projects-dropdown,
.nav-projects:focus-within .projects-dropdown {
    opacity: 1;

    visibility: visible;

    pointer-events: auto;

    transform: translateY(0);
}


/* =====================================================
   DROPDOWN ITEMS
===================================================== */

.projects-dropdown li {
    margin: 0;
    padding: 0;
}

.projects-dropdown li a {
    display: block;

    padding: 10px 14px;

    /*
     * DEFAULT TEXT = WHITE
     */
    color: #ffffff;

    text-decoration: none;

    font-family: var(--font-sans);

    font-size: 13px;
    line-height: 1.3;
    font-weight: 500;

    white-space: nowrap;

    border-radius: 5px;

    transition:
        color 160ms ease,
        background 160ms ease;
}


/* =====================================================
   HOVER = GOLD
===================================================== */

.projects-dropdown li a:hover,
.projects-dropdown li a:focus-visible {
    color: #b08b4f;

    background: rgba(176, 139, 79, 0.08);

    opacity: 1;
}


/* =====================================================
   PROJECT NAME
===================================================== */

.dropdown-project-name {
    display: block;

    color: inherit;

    font-size: 13px;
    font-weight: 500;
}


/* =====================================================
   HIDE LOCATION / DETAILS
===================================================== */

.dropdown-project-location {
    display: none !important;
}


/* =====================================================
   TABLET / MOBILE
===================================================== */

@media (max-width: 63.99rem) {

    .header-inner {
        grid-template-columns: 1fr auto;

        min-height: 4rem;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .header-enquire {
        display: none;
    }

    .site-nav {
        display: none;

        position: absolute;

        left: 0;
        right: 0;

        top: 100%;

        background: var(--color-navy);

        border-top:
            1px solid
            rgba(246, 243, 236, 0.12);

        padding:
            var(--space-md)
            var(--page-gutter)
            var(--space-lg);
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav ul {
        flex-direction: column;

        align-items: flex-start;

        gap: 0;
    }

    .site-nav li {
        width: 100%;

        border-bottom:
            1px solid
            rgba(246, 243, 236, 0.1);
    }

    .site-nav a {
        display: block;

        padding: 0.9rem 0;
    }

    .nav-enquire {
        display: block;

        border-bottom: 0;

        padding-top: var(--space-sm);
    }

    .nav-enquire .button {
        display: inline-flex;

        align-items: center;

        gap: 0.45rem;
    }


    /* =================================================
       MOBILE PROJECTS DROPDOWN
    ================================================= */

    .projects-dropdown {
        position: static;

        min-width: 0;

        margin: 6px 0 6px 14px;
        padding: 4px;

        transform: none;

        /*
         * SAME HEADER BLUE — 75% OPACITY
         */
        background: rgba(16, 36, 59, 0.75);

        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);

        border:
            1px solid
            rgba(246, 243, 236, 0.12);

        border-radius: 6px;

        box-shadow: none;

        opacity: 1;
        visibility: visible;

        pointer-events: auto;

        display: none;
    }

    .nav-projects:hover .projects-dropdown,
    .nav-projects:focus-within .projects-dropdown {
        transform: none;
    }

    .nav-projects.is-open .projects-dropdown {
        display: block;
    }

    .projects-dropdown::before {
        display: none;
    }

    .projects-dropdown li a {
        padding: 10px 12px;

        color: #ffffff;
    }

    .projects-dropdown li a:hover,
    .projects-dropdown li a:focus-visible {
        color: #b08b4f;

        background: rgba(176, 139, 79, 0.08);

        opacity: 1;
    }
}