/* =============================================
   NAVBAR.CSS — Casper and Saint
   ============================================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--duration-mid) var(--ease-out),
              box-shadow var(--duration-mid) var(--ease-out);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(13, 27, 62, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  z-index: 1001;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  transition: filter var(--duration-mid);
  /* Invert logo if needed on dark bg — remove if logo is already light/dark adaptive */
  filter: brightness(0) invert(1);
}

.navbar.scrolled .logo-img {
  filter: brightness(0) invert(1);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  transition: color var(--duration-fast);
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold);
  transition: width var(--duration-mid) var(--ease-out);
}

.nav-link:hover {
  color: var(--white);
}

.nav-link:hover::after {
  width: 100%;
}

/* CTA nav link */
.nav-link.nav-cta {
  background: var(--gold);
  color: var(--navy);
  padding: 0.55rem 1.4rem;
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: background var(--duration-fast), transform var(--duration-fast);
}

.nav-link.nav-cta::after { display: none; }

.nav-link.nav-cta:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  z-index: 1001;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--duration-mid) var(--ease-out),
              opacity var(--duration-mid),
              width var(--duration-mid);
}

/* Active hamburger */
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    background: var(--navy);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: var(--space-3xl) var(--space-xl);
    gap: var(--space-md);
    transition: right var(--duration-slow) var(--ease-out);
    box-shadow: -8px 0 40px rgba(0,0,0,0.3);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-link {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.9);
  }

  .nav-link.nav-cta {
    margin-top: var(--space-sm);
    padding: 0.8rem 2rem;
  }
}