/* Navigation */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--color-white);
  box-shadow: 0 1px 0 var(--color-light-grey);
}

.site-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--nav-height);
}

/* Logo */
.nav-logo img {
  height: 40px;
  width: auto;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--color-navy);
  font-weight: 700;
  font-size: var(--font-size-small);
  text-decoration: none;
  transition: color var(--transition-speed);
}

.nav-link:hover,
.nav-link--active {
  color: var(--color-bright-blue);
}

.nav-link:hover {
  text-decoration: none;
}

.nav-cta {
  margin-left: 0.5rem;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 44px;
  height: 44px;
  position: relative;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-navy);
  position: absolute;
  left: 10px;
  transition: transform var(--transition-speed), opacity var(--transition-speed);
}

.nav-hamburger span:nth-child(1) { top: 14px; }
.nav-hamburger span:nth-child(2) { top: 21px; }
.nav-hamburger span:nth-child(3) { top: 28px; }

/* Hamburger open state */
.nav--open .nav-hamburger span:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}

.nav--open .nav-hamburger span:nth-child(2) {
  opacity: 0;
}

.nav--open .nav-hamburger span:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
}

/* Mobile */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background-color: var(--color-off-white);
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  .nav--open .nav-menu {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 0.5rem;
  }

  .nav-hamburger {
    display: block;
  }
}