/* ============================================================
   TSMS – Navigation
   ============================================================ */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: var(--nav-height);
  background: rgba(245, 243, 239, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.nav-logo-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--charcoal);
  letter-spacing: 0.05em;
}
.nav-logo-tagline {
  font-family: var(--font-body);
  font-size: 0.58rem;
  font-weight: 400;
  color: var(--mid);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  margin-top: 1px;
}

/* Desktop links */
.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--mid);
  transition: color var(--transition);
}
.nav-links a:hover {
  color: var(--green);
}

/* Right side: lang switcher + CTA */
.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  background: var(--panel-bg);
  border-radius: 20px;
  padding: 0.2rem;
}
.lang-btn {
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--mid);
  padding: 0.3rem 0.65rem;
  border-radius: 16px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.lang-btn.active {
  background: var(--white);
  color: var(--charcoal);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.lang-btn:hover:not(.active) {
  color: var(--green);
}

/* CTA button */
.nav-cta {
  background: var(--green);
  color: var(--white);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  transition: background var(--transition);
}
.nav-cta:hover {
  background: var(--green-light);
}

/* Burger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.25rem;
}
.nav-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--charcoal);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--stone);
  padding: 5.5rem 7% 3rem;
  flex-direction: column;
  gap: 1.8rem;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--charcoal);
}
.mobile-menu a:hover {
  color: var(--green);
}
.mobile-menu .lang-switcher {
  align-self: flex-start;
  margin-top: 0.5rem;
}

/* Responsive */
@media (max-width: 900px) {
  .nav-links,
  .nav-cta {
    display: none;
  }
  .nav-burger {
    display: flex;
  }
  /* Keep lang switcher visible on desktop nav even on tablet */
  .nav-right .lang-switcher {
    display: flex;
  }
}
@media (max-width: 480px) {
  .nav-right .lang-switcher {
    display: none; /* shown in mobile menu instead */
  }
}