/**
 * Main header — desktop nav dropdowns & search suggestions
 */

.usl-header-nav {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 0.15rem;
    position: relative;
    min-width: 0;
    max-width: 100%;
    overflow-x: clip;
}

.usl-nav-dropdown {
    position: relative;
    z-index: 1;
}

.usl-nav-dropdown:hover,
.usl-nav-dropdown:focus-within {
    z-index: 20;
}

.usl-nav-dropdown__trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: #1f2937;
    text-decoration: none;
    font-weight: 700;
    padding: 0.5rem 0.65rem;
    border-radius: 0.5rem;
    transition: color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
    max-width: none !important;
    overflow: visible !important;
    text-overflow: clip !important;
}

.usl-nav-dropdown__trigger:hover,
.usl-nav-dropdown:focus-within .usl-nav-dropdown__trigger {
    color: var(--usl-primary, #1e3a8a);
    background: rgba(30, 58, 138, 0.06);
}

.usl-nav-dropdown__chevron {
    font-size: 0.65em;
    opacity: 0.75;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.usl-nav-dropdown:hover .usl-nav-dropdown__chevron,
.usl-nav-dropdown:focus-within .usl-nav-dropdown__chevron {
    transform: rotate(180deg);
    opacity: 1;
}

.usl-nav-dropdown__menu {
    display: block;
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    min-width: 15.5rem;
    max-width: min(20rem, calc(100vw - 2rem));
    padding: 0.4rem;
    margin: 0;
    list-style: none;
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 0.75rem;
    box-shadow:
        0 4px 6px -1px rgba(15, 23, 42, 0.06),
        0 12px 28px -4px rgba(15, 23, 42, 0.14);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(6px) scale(0.98);
    transform-origin: top left;
    transition:
        opacity 0.22s ease,
        transform 0.22s ease,
        visibility 0.22s ease;
}

.usl-nav-dropdown__menu::before {
    content: '';
    position: absolute;
    top: -0.5rem;
    left: 0;
    right: 0;
    height: 0.5rem;
}

.usl-nav-dropdown:hover .usl-nav-dropdown__menu,
.usl-nav-dropdown:focus-within .usl-nav-dropdown__menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

/* Align wide menus (Services, etc.) to the right edge of trigger */
.usl-header-nav > .usl-nav-dropdown:nth-last-child(-n+2) .usl-nav-dropdown__menu {
    left: auto;
    right: 0;
    transform-origin: top right;
}

.usl-nav-dropdown__item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.75rem;
    color: #374151;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.35;
    border-radius: 0.5rem;
    transition: background 0.15s ease, color 0.15s ease;
}

.usl-nav-dropdown__item + .usl-nav-dropdown__item {
    margin-top: 0.125rem;
}

.usl-nav-dropdown__item:hover,
.usl-nav-dropdown__item:focus-visible {
    background: linear-gradient(
        90deg,
        rgba(30, 58, 138, 0.08) 0%,
        rgba(30, 58, 138, 0.04) 100%
    );
    color: var(--usl-primary, #1e3a8a);
    outline: none;
}

.usl-nav-dropdown__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    flex-shrink: 0;
    border-radius: 0.45rem;
    background: rgba(30, 58, 138, 0.08);
    color: var(--usl-primary, #1e3a8a);
    font-size: 0.8rem;
    transition: background 0.15s ease, color 0.15s ease;
}

.usl-nav-dropdown__item:hover .usl-nav-dropdown__icon,
.usl-nav-dropdown__item:focus-visible .usl-nav-dropdown__icon {
    background: var(--usl-primary, #1e3a8a);
    color: #fff;
}

.usl-nav-dropdown__label {
    flex: 1;
    min-width: 0;
}

/* Nested submenu (e.g. Calendar → event / academic calendars) */
.usl-nav-dropdown__sub {
    position: relative;
}

.usl-nav-dropdown__sub-trigger {
    width: 100%;
    border: none;
    background: transparent;
    cursor: pointer;
    font: inherit;
    text-align: left;
}

.usl-nav-dropdown__sub-chevron {
    font-size: 0.65rem;
    opacity: 0.65;
    margin-left: auto;
    flex-shrink: 0;
}

.usl-nav-dropdown__submenu {
    display: block;
    position: absolute;
    top: 0;
    left: calc(100% + 0.35rem);
    min-width: 14.5rem;
    padding: 0.4rem;
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 0.75rem;
    box-shadow:
        0 4px 6px -1px rgba(15, 23, 42, 0.06),
        0 12px 28px -4px rgba(15, 23, 42, 0.14);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-4px);
    transition:
        opacity 0.2s ease,
        transform 0.2s ease,
        visibility 0.2s ease;
}

.usl-nav-dropdown__sub:hover .usl-nav-dropdown__submenu,
.usl-nav-dropdown__sub:focus-within .usl-nav-dropdown__submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
}

.usl-nav-dropdown__sub:hover .usl-nav-dropdown__sub-trigger,
.usl-nav-dropdown__sub:focus-within .usl-nav-dropdown__sub-trigger {
    background: linear-gradient(
        90deg,
        rgba(30, 58, 138, 0.08) 0%,
        rgba(30, 58, 138, 0.04) 100%
    );
    color: var(--usl-primary, #1e3a8a);
}

/* Right-aligned menus: open nested submenu to the left */
.usl-header-nav > .usl-nav-dropdown:nth-last-child(-n+2) .usl-nav-dropdown__submenu {
    left: auto;
    right: calc(100% + 0.35rem);
    transform: translateX(4px);
}

.usl-header-nav > .usl-nav-dropdown:nth-last-child(-n+2) .usl-nav-dropdown__sub:hover .usl-nav-dropdown__submenu,
.usl-header-nav > .usl-nav-dropdown:nth-last-child(-n+2) .usl-nav-dropdown__sub:focus-within .usl-nav-dropdown__submenu {
    transform: translateX(0);
}

/* Legacy class hooks (header_navigation still outputs .dropdown-content) */
.dropdown-content.usl-nav-dropdown__menu,
.usl-nav-dropdown .dropdown-content {
    display: block;
}

.dropdown-content a.usl-nav-dropdown__item,
.usl-nav-dropdown .dropdown-content a {
    border-bottom: none;
}

/* Search quick suggestions panel */
.usl-search-suggestions {
    padding: 0.65rem 0.75rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow:
        0 4px 6px -1px rgba(15, 23, 42, 0.06),
        0 12px 28px -4px rgba(15, 23, 42, 0.12);
}

.usl-search-suggestions__title {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #6b7280;
    margin: 0 0 0.5rem;
    padding: 0 0.15rem;
}

.usl-search-suggestions__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.usl-search-suggestions__chip {
    display: inline-block;
    padding: 0.3rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--usl-primary, #1e40af);
    background: rgba(30, 58, 138, 0.08);
    border-radius: 999px;
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
}

.usl-search-suggestions__chip:hover {
    background: var(--usl-primary, #1e3a8a);
    color: #fff;
}

@media (max-width: 767px) {
    .usl-nav-dropdown__menu {
        position: static;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0;
    }
}