/* ============================================
   SEMCOG.ai — Navigation Styles
   ============================================ */

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: all var(--transition-smooth);
}

.nav::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-subtle);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav.scrolled::after {
  opacity: 1;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--container-padding);
  max-width: 1400px;
  margin: 0 auto;
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  z-index: 1001;
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
  position: relative;
  flex-shrink: 0;
}

.nav__logo-mark svg {
  width: 100%;
  height: 100%;
}

.nav__logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.nav__logo-text span {
  color: var(--accent-purple-light);
}

/* Desktop Menu */
.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
  border-radius: 6px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.nav__link svg {
  width: 12px; height: 12px;
  transition: transform var(--transition-fast);
  opacity: 0.6;
}

.nav__item:hover .nav__link svg,
.nav__item--dropdown.open .nav__link svg {
  transform: rotate(180deg);
}

/* Dropdown */
.nav__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: rgba(14, 14, 22, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 8px;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
  box-shadow: 0 16px 48px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.03);
}

.nav__item:hover .nav__dropdown,
.nav__item--dropdown.open .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: all;
}

.nav__dropdown-item {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.nav__dropdown-item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}

.nav__dropdown-item span {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 1px;
}

/* Right section */
.nav__right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* CTA Button */
.nav__cta {
  padding: 9px 20px;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 1001;
  padding: 8px;
  border-radius: 6px;
  transition: background var(--transition-fast);
}

.nav__hamburger:hover {
  background: var(--bg-glass-hover);
}

.nav__hamburger-line {
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-smooth);
  transform-origin: center;
}

.nav__hamburger.open .nav__hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger.open .nav__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Menu */
.nav__mobile {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10, 10, 15, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  padding: 100px var(--container-padding) 40px;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.nav__mobile.open {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-link {
  display: block;
  padding: 16px 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition-fast);
  letter-spacing: -0.02em;
}

.nav__mobile-link:hover {
  color: var(--text-primary);
}

.nav__mobile-sublabel {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 24px 0 8px;
}

.nav__mobile-sublink {
  display: block;
  padding: 12px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition-fast);
}

.nav__mobile-sublink:hover {
  color: var(--text-secondary);
}

.nav__mobile-cta {
  margin-top: 32px;
  width: 100%;
  justify-content: center;
}

@media (max-width: 968px) {
  .nav__menu { display: none; }
  .nav__right .btn { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile { display: flex; }
}

/* ============================================
   Page Hero offset for fixed nav
   ============================================ */
.page-hero {
  padding-top: 80px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 0;
}

.footer__main {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 60px;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__logo-text {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.footer__logo-text span {
  color: var(--accent-purple-light);
}

.footer__tagline {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 280px;
}

.footer__social {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  transition: all var(--transition-fast);
  font-size: 0.85rem;
}

.footer__social-link:hover {
  border-color: var(--border-accent);
  color: var(--accent-purple-light);
  background: var(--accent-purple-dim);
}

.footer__col-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__link {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--text-primary);
}

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__copyright {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer__legal-links {
  display: flex;
  gap: 20px;
}

.footer__legal-link {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--text-secondary);
}

@media (max-width: 1024px) {
  .footer__main {
    grid-template-columns: 1fr 1fr;
  }
  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer {
    padding: 56px 0 0;
  }
  .footer__main {
    grid-template-columns: 1fr;
  }
  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}