/* NAV — meridianbasehq.com */
nav {
  --nav-bg: var(--bg, #F5F2ED);
  --nav-bg-deep: var(--bg-deep, #EDE9E2);
  --nav-ink: var(--ink, #0d0e0c);
  --nav-muted: var(--ink-light, #8a8680);
  --nav-lime: var(--lime, #c8f135);
  --nav-border: var(--border, rgba(13,14,12,0.1));
  --nav-border-strong: var(--border-strong, rgba(13,14,12,0.18));
  position: sticky; top: 0; z-index: 100;
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  padding: 0 clamp(1.5rem, 5vw, 3rem);
  height: 56px; display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { font-family: 'DM Sans', sans-serif; font-size: 1rem; font-weight: 600; color: var(--nav-ink); text-decoration: none; flex-shrink: 0; }
.nav-contact { font-family: 'DM Mono', monospace; font-size: 0.78rem; font-weight: 300; color: var(--nav-muted); text-decoration: none; letter-spacing: 0.01em; transition: color 0.2s ease; background: none; border: none; cursor: pointer; padding: 0; }
.nav-contact:hover, .nav-contact.current { color: var(--nav-ink); }
.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-dropdown { position: relative; display: inline-flex; align-items: center; }
.nav-dropdown-btn { font-family: 'DM Mono', monospace; font-size: 0.78rem; font-weight: 300; color: var(--nav-muted); letter-spacing: 0.01em; display: inline-flex; align-items: center; gap: 5px; transition: color 0.2s; background: none; border: none; cursor: pointer; padding: 0; }
.nav-dropdown-btn:hover, .nav-dropdown.active .nav-dropdown-btn { color: var(--nav-ink); }
.nav-caret { display: inline-block; width: 4px; height: 4px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform 0.2s; flex-shrink: 0; margin-top: 1px; }
.nav-dropdown.open .nav-caret { transform: rotate(-135deg) translateY(1px); }
.nav-dropdown-panel { display: none; position: absolute; top: 100%; left: -14px; padding: 14px 6px 6px 6px; background: transparent; z-index: 200; min-width: 238px; }
.nav-dropdown.open .nav-dropdown-panel { display: flex; flex-direction: column; gap: 1px; }
.nav-dropdown-panel::before { content: ''; position: absolute; top: 14px; left: 0; right: 0; bottom: 0; background: var(--nav-bg); border: 1px solid var(--nav-border-strong); border-radius: 8px; box-shadow: 0 8px 28px rgba(13,14,12,0.1); z-index: -1; }
.nav-dropdown-link { display: block; padding: 9px 12px; border-radius: 5px; text-decoration: none; transition: background 0.15s; position: relative; z-index: 1; }
.nav-dropdown-link:hover, .nav-dropdown-link.current { background: var(--nav-bg-deep); }
.nav-dropdown-label { font-family: 'DM Mono', monospace; font-size: 11.5px; font-weight: 500; color: var(--nav-ink); letter-spacing: 0.02em; display: block; margin-bottom: 2px; }
.nav-dropdown-sub { font-family: 'DM Sans', sans-serif; font-size: 11px; font-weight: 300; color: var(--nav-muted); display: block; }
.nav-hamburger { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; flex-direction: column; justify-content: center; gap: 5px; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background-color: var(--nav-ink); transition: transform 0.3s ease, opacity 0.3s ease; }
footer { padding: 2rem clamp(1.5rem, 5vw, 3rem); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.8rem; border-top: 1px solid rgba(13,14,12,0.1); }
.footer-brand { font-family: 'DM Mono', monospace; font-size: 0.8rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(13,14,12,0.4); }
@media (max-width: 768px) {
  .nav-hamburger { display: flex; }
  .nav-links { display: none !important; position: absolute; top: 56px; left: 0; right: 0; background-color: var(--nav-bg); border-bottom: 1px solid var(--nav-border); flex-direction: column; align-items: flex-start; padding: 1rem clamp(1.5rem, 5vw, 3rem); gap: 0.8rem; z-index: 99; }
  body.nav-open .nav-links { display: flex !important; }
  .nav-dropdown { display: block; width: 100%; }
  .nav-dropdown-btn { padding: 2px 0; }
  .nav-dropdown-panel { position: static; box-shadow: none; border: none; padding: 4px 0 0 14px; background: transparent; min-width: 0; }
  .nav-dropdown-panel::before { display: none; }
  .nav-dropdown.open .nav-dropdown-panel { display: flex; }
  .nav-dropdown-link { padding: 5px 0; border-radius: 0; }
  .nav-dropdown-link:hover, .nav-dropdown-link.current { background: transparent; }
  .nav-dropdown-label { font-size: 0.75rem; }
  body.nav-open .nav-hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open .nav-hamburger span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  footer { flex-direction: column; align-items: flex-start; }
}