/* =============================================================
   nav.css — Navigation styles
   ============================================================= */

#mainNav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--navy);
}

.sun-icon { width: 36px; height: 36px; }

.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--navy);
}

.nav-logo-text .accent { color: var(--sun); }

/* Links */
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-mid);
  font-size: 15px;
  font-weight: 500;
  transition: color var(--transition-base);
}

.nav-links a:hover { color: var(--navy); }

.nav-cta {
  background: var(--navy) !important;
  color: var(--white) !important;
  padding: 9px 22px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-base) !important;
}

.nav-cta:hover {
  background: var(--navy-mid) !important;
  color: var(--white) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all var(--transition-slow);
}

/* Hamburger open state — toggled by JS adding .open to nav-links */
.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg) 5vw;
    gap: var(--space-md);
    align-items: flex-start;
  }

  .nav-links.open { display: flex; }

  .hamburger { display: flex; }
}