/* Explain: Styles for desktop navigation dropdowns and mobile toggles. */
/* ---------- Desktop nav dropdown ---------- */
.nav-dropdown {
    position: relative;
}

.nav-dropdown .nav-dropdown-panel {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 13.5rem;
    padding-top: 0.75rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.18s ease, visibility 0.18s ease;
    z-index: 60;
}

.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown-menu {
    display: grid;
    gap: 0.15rem;
    padding: 0.5rem;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

.nav-dropdown-menu a {
    display: block;
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 0.9rem;
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus {
    background: var(--surface-color);
    color: var(--primary-color);
}

.nav-dropdown-caret {
    font-size: 0.55rem;
    transition: transform 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-caret,
.nav-dropdown:focus-within .nav-dropdown-caret {
    transform: rotate(180deg);
}