/* ============================================================
   NAV — Sticky top navigation
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--clr-navy);
  z-index: 1000;
  border-bottom: 2px solid var(--clr-crimson);
  transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow-lg); }

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
}
.nav__logo img {
  height: 110px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.nav__link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition);
  position: relative;
  padding-bottom: var(--sp-1);
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-crimson);
  transition: width var(--transition);
}
.nav__link:hover,
.nav__link.active { color: var(--clr-white); }
.nav__link:hover::after,
.nav__link.active::after { width: 100%; }

.nav__cta {
  margin-left: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.nav__cta .btn {
  font-size: var(--text-xs);
  padding: var(--sp-3) var(--sp-4);
  white-space: nowrap;
}
.nav__phone {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--clr-white);
  text-decoration: none;
  white-space: nowrap;
}
.nav__phone:hover { color: var(--clr-crimson); }

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-2);
  background: none;
  border: none;
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-white);
  transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__toggle { display: flex; }
  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--clr-navy);
    flex-direction: column;
    align-items: stretch;
    padding: var(--sp-6);
    gap: 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav__link {
    padding: var(--sp-4) 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: var(--text-base);
  }
  .nav__link::after { display: none; }
  .nav__cta {
    margin: var(--sp-4) 0 0;
    flex-direction: column;
    align-items: stretch;
  }
  .nav__cta .btn { width: 100%; justify-content: center; }
  .nav__phone { text-align: center; padding: var(--sp-2) 0; }

  /* Hamburger open state */
  .nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.open span:nth-child(2) { opacity: 0; }
  .nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}