/* ─────────────────────────────────────────────
   WeDefineApps — nav.css
   Header, navigation, mega menus, mobile drawer, footer
───────────────────────────────────────────── */

/* ── Site Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.site-header.scrolled {
  background: #fff;
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

/* ── Nav Inner ── */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 2rem;
}
.site-header.scrolled .nav-inner { height: 60px; }

/* ── Logo ── */
.logo { display: inline-flex; align-items: center; text-decoration: none; }
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}
.logo-accent { color: var(--primary); }

/* ── Desktop Nav ── */
.desktop-nav { display: flex; align-items: center; flex: 1; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list > li { position: relative; }
.nav-list > li > a,
.nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.nav-list > li > a:hover,
.nav-trigger:hover,
.nav-list > li.active > a,
.nav-list > li.active .nav-trigger {
  color: var(--text-primary);
  background: var(--surface);
}
.nav-trigger [data-lucide] {
  width: 14px;
  height: 14px;
  transition: transform 0.2s;
}
.has-mega-menu.is-open .nav-trigger [data-lucide] { transform: rotate(180deg); }

/* ── Mega Menu ── */
.mega-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  min-width: 680px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  pointer-events: none;
  z-index: 100;
}
.has-mega-menu.is-open .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.mega-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.mega-col-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.mega-col ul { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.mega-col ul li a {
  display: block;
  padding: 5px 8px;
  font-size: 13.5px;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.mega-col ul li a:hover { color: var(--primary); background: var(--primary-ultra-light); }

/* Industries mega */
.mega-menu--industries { min-width: 420px; }
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
.industries-grid a {
  display: block;
  padding: 6px 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.industries-grid a:hover { color: var(--primary); background: var(--primary-ultra-light); }

/* ── Nav Right ── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  transition: var(--transition);
}
.mobile-toggle:hover { background: var(--surface); }
.mobile-toggle [data-lucide] { width: 18px; height: 18px; }

/* ── Mobile Drawer ── */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(340px, 90vw);
  height: 100vh;
  background: #fff;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
  overflow-y: auto;
}
.mobile-drawer.is-open { transform: translateX(0); }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.drawer-overlay.is-active { opacity: 1; visibility: visible; }

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.drawer-close {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: none;
  color: var(--text-primary);
  transition: var(--transition);
}
.drawer-close:hover { background: var(--surface); }
.drawer-close [data-lucide] { width: 16px; height: 16px; }

.drawer-nav { flex: 1; padding: 1rem 1.5rem; display: flex; flex-direction: column; gap: 2px; }

.drawer-accordion {}
.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  border: none;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  gap: 8px;
}
.accordion-trigger [data-lucide] { width: 16px; height: 16px; transition: transform 0.2s; flex-shrink: 0; }
.accordion-trigger[aria-expanded="true"] [data-lucide] { transform: rotate(180deg); }

.accordion-panel {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 0.5rem 0 0.75rem 0;
}
.accordion-panel.is-open { display: flex; }
.accordion-panel a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.accordion-panel a:hover { color: var(--primary); background: var(--primary-ultra-light); }

.drawer-link {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: color 0.2s;
}
.drawer-link:hover { color: var(--primary); }

.drawer-cta {
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Footer ── */
.site-footer {
  background: var(--dark);
  color: #E8E6E1;
  padding-top: 4rem;
  padding-bottom: 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo .logo-text { color: #E8E6E1; }
.footer-logo .logo-accent { color: var(--primary); }
.footer-tagline {
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  margin-top: 1rem;
  max-width: 280px;
}
.footer-socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-socials a:hover { color: var(--primary); border-color: var(--primary); }
.footer-socials [data-lucide] { width: 16px; height: 16px; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.footer-col-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.footer-col ul li a {
  font-size: 13.5px;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--primary); }

.footer-contact-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
.footer-contact-list [data-lucide] { width: 14px; height: 14px; flex-shrink: 0; margin-top: 2px; color: var(--primary); }
.footer-contact-list a { color: rgba(255,255,255,0.55); transition: color 0.2s; }
.footer-contact-list a:hover { color: var(--primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copy { font-size: 13px; color: rgba(255,255,255,0.3); }
.footer-legal { display: flex; gap: 1.25rem; align-items: center; }
.footer-legal span { color: rgba(255,255,255,0.2); }
.footer-legal a { font-size: 13px; color: rgba(255,255,255,0.3); transition: color 0.2s; }
.footer-legal a:hover { color: var(--primary); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .desktop-nav { display: none; }
  .mobile-toggle { display: flex; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .footer-cols { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 400px) {
  .footer-cols { grid-template-columns: 1fr; }
}