/**
 * Shared site navigation styles (desktop dropdowns + mobile accordion).
 *
 * Loaded on every page so the navbar is identical across the home page and
 * all interior static pages.
 */

/* Nav Dropdown */
.nav-item {
    position: relative;
}
.nav-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    cursor: pointer;
}
.nav-trigger .chev {
    width: 14px;
    height: 14px;
    transition: transform 0.25s ease;
    opacity: 0.5;
}
.nav-item:hover .nav-trigger .chev,
.nav-item.open .nav-trigger .chev {
    transform: rotate(180deg);
    opacity: 1;
}
.nav-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    min-width: 320px;
    background: #f5f5f3;
    border: 1px solid rgba(42, 40, 37, 0.12);
    box-shadow:
        0 20px 35px -5px rgba(42, 40, 37, 0.2),
        0 8px 15px -5px rgba(42, 40, 37, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    z-index: 60;
}
.nav-item:hover .nav-dropdown,
.nav-item.open .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}
/* invisible hover bridge to prevent dropdown flicker */
.nav-item::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    height: 12px;
}
.nav-dropdown-inner {
    padding: 0.75rem 0;
}
.nav-dropdown-header {
    display: block;
    font-family: "Times New Roman", Times, serif;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: rgba(34, 34, 34, 0.5);
    padding: 0.5rem 1.5rem 0.75rem;
    border-bottom: 1px solid rgba(42, 40, 37, 0.08);
    margin-bottom: 0.25rem;
}
.nav-dropdown-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #222222;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}
.nav-dropdown-link .accent-num {
    font-family: "Times New Roman", Times, serif;
    font-weight: 700;
    font-size: 0.75rem;
    color: rgba(34, 34, 34, 0.35);
    letter-spacing: 0.15em;
}
.nav-dropdown.accent-rust .nav-dropdown-link:hover,
.nav-dropdown.accent-rust .nav-dropdown-link.is-active {
    background: #ffffff;
    border-left-color: #a64d32;
    color: #a64d32;
    padding-left: 1.75rem;
}
.nav-dropdown.accent-rust .nav-dropdown-link:hover .accent-num,
.nav-dropdown.accent-rust .nav-dropdown-link.is-active .accent-num {
    color: #a64d32;
}
.nav-dropdown.accent-blue .nav-dropdown-link:hover,
.nav-dropdown.accent-blue .nav-dropdown-link.is-active {
    background: #ffffff;
    border-left-color: #2d6396;
    color: #2d6396;
    padding-left: 1.75rem;
}
.nav-dropdown.accent-blue .nav-dropdown-link:hover .accent-num,
.nav-dropdown.accent-blue .nav-dropdown-link.is-active .accent-num {
    color: #2d6396;
}
.nav-dropdown-footer {
    margin-top: 0.25rem;
    padding: 0.75rem 1.5rem;
    border-top: 1px solid rgba(42, 40, 37, 0.08);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: rgba(34, 34, 34, 0.6);
}
.nav-dropdown-footer a {
    color: rgba(34, 34, 34, 0.6);
    transition: color 0.2s ease;
}
.nav-dropdown.accent-rust .nav-dropdown-footer a:hover {
    color: #a64d32;
}
.nav-dropdown.accent-blue .nav-dropdown-footer a:hover {
    color: #2d6396;
}

/* Mobile sub-menu */
.mobile-submenu {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
}
.mobile-submenu.open {
    max-height: 600px;
}
.mobile-submenu-inner {
    padding-top: 1rem;
    padding-bottom: 0.5rem;
    padding-left: 1rem;
    border-left: 2px solid rgba(42, 40, 37, 0.1);
    margin-left: 0.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.mobile-submenu-link {
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(34, 34, 34, 0.75);
}
.mobile-nav-group-trigger .chev {
    transition: transform 0.3s ease;
}
.mobile-nav-group-trigger.open .chev {
    transform: rotate(180deg);
}