/* Top navigation: Services / Products dropdowns (desktop) and grouped mobile menu */

.nav-dd { position: relative; display: flex; align-items: center; height: 100%; }
.nav-dd-btn { background: none; border: none; cursor: pointer; padding: 8px 0; display: inline-flex; align-items: center; gap: 6px; color: var(--fg2); font-family: inherit; font-size: 14px; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; transition: color 0.2s; }
.nav-dd-btn svg { width: 10px; height: 10px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.2s; }
.nav-dd:hover .nav-dd-btn, .nav-dd:focus-within .nav-dd-btn, .nav-dd-btn.active { color: var(--fg); }
.nav-dd:hover .nav-dd-btn svg, .nav-dd:focus-within .nav-dd-btn svg { transform: rotate(180deg); }

.nav-dd-menu { position: absolute; top: calc(100% + 18px); left: -20px; min-width: 260px; padding: 10px 0; background: rgba(12,12,11,0.98); border: 1px solid rgba(255,255,255,0.08); border-radius: 2px; box-shadow: 0 16px 40px rgba(0,0,0,0.45); opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity 0.18s, transform 0.18s, visibility 0.18s; z-index: 101; }
.nav-dd-menu::before { content: ''; position: absolute; top: -22px; left: 0; right: 0; height: 22px; }
.nav-dd:hover .nav-dd-menu, .nav-dd:focus-within .nav-dd-menu { opacity: 1; visibility: visible; transform: translateY(0); }

.nav-links .nav-dd-menu a { display: block; padding: 10px 20px; color: var(--fg2); font-size: 14px; font-weight: 500; letter-spacing: 0; text-transform: none; white-space: nowrap; }
.nav-links .nav-dd-menu a:hover, .nav-links .nav-dd-menu a:focus-visible, .nav-links .nav-dd-menu a.active { color: var(--fg); background: rgba(255,255,255,0.04); }
.nav-dd-menu .nav-dd-desc { display: block; margin-top: 2px; color: var(--fg2); opacity: 0.7; font-size: 12px; font-weight: 400; }

/* Mobile: grouped list */
#nav-mobile { max-height: calc(100vh - 64px); overflow-y: auto; }
#nav-mobile .nav-m-label { color: var(--fg2); font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; padding: 18px 0 4px; }
#nav-mobile .nav-m-label:first-child { padding-top: 0; }
#nav-mobile .nav-m-sub { padding-left: 14px; font-size: 15px; text-transform: none; letter-spacing: 0; }