/* ============================================================
   NAVBAR — Fixed navigation with blur effect
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  z-index: var(--z-navbar);
  display: flex;
  align-items: center;
  padding: 0 var(--section-pad-x);
  transition: background var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.navbar.is-scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
}

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

.navbar__logo-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
  z-index: calc(var(--z-navbar) + 2);
}

.navbar__logo {
  font-family: var(--font-editorial);
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
}

.navbar__logo span {
  color: var(--color-accent);
}

.navbar__logo-sub {
  font-size: 0.65rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
  margin-top: 2px;
}

/* Desktop nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-base) var(--ease-out);
}

.navbar__link:hover,
.navbar__link.is-active {
  color: var(--color-accent);
}

.navbar__link:hover::after,
.navbar__link.is-active::after {
  width: 100%;
}

/* Social Icons */
.navbar__social {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.navbar__social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.navbar__social-icon:hover {
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* Mobile menu toggle */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 28px;
  padding: 4px 0;
  z-index: calc(var(--z-navbar) + 2);
  cursor: pointer;
}

.navbar__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast);
  transform-origin: center;
}

.navbar__toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.navbar__toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.navbar__toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile fullscreen menu */
.navbar__mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-10);
  z-index: calc(var(--z-navbar) + 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}

.navbar__mobile-menu.is-open {
  opacity: 1;
  pointer-events: auto;
}

.navbar__mobile-link {
  font-family: var(--font-editorial);
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.navbar__mobile-menu.is-open .navbar__mobile-link {
  opacity: 1;
  transform: translateY(0);
}

.navbar__mobile-link:nth-child(1) { transition-delay: 100ms; }
.navbar__mobile-link:nth-child(2) { transition-delay: 150ms; }
.navbar__mobile-link:nth-child(3) { transition-delay: 200ms; }
.navbar__mobile-link:nth-child(4) { transition-delay: 250ms; }
.navbar__mobile-link:nth-child(5) { transition-delay: 300ms; }
.navbar__mobile-link:nth-child(6) { transition-delay: 350ms; }

.navbar__mobile-link:hover {
  color: var(--color-accent);
}

/* Scroll progress indicator */
.scroll-progress {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent);
  z-index: var(--z-navbar);
  transition: width 50ms linear;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .navbar__links {
    display: none;
  }

  .navbar__cta-desktop {
    display: none;
  }

  .navbar__toggle {
    display: flex;
  }
}