/* =====================
   NAVBAR — Mobile First
   ===================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem var(--container-padding);
  transition: background var(--dur-med) var(--ease),
              border-color var(--dur-med) var(--ease),
              backdrop-filter var(--dur-med) var(--ease);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(8,10,15,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-lg);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  transition: color var(--dur-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-logo:hover,
.nav-logo:focus-visible { color: var(--accent-light); }

/* Desktop nav — hidden on mobile */
.nav-links {
  display: none;
}

@media (min-width: 769px) {
  .nav-links {
    display: flex;
    align-items: center;
    gap: var(--sp-xl);
  }
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color var(--dur-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.nav-links a:hover,
.nav-links a:focus-visible { color: var(--text-primary); }

.nav-cta {
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--r-full) !important;
  border: 1px solid var(--border-strong) !important;
  color: var(--text-primary) !important;
  transition: background var(--dur-fast), border-color var(--dur-fast) !important;
  min-height: 44px !important;
}
.nav-cta:hover,
.nav-cta:focus-visible {
  background: rgba(59,130,246,0.1) !important;
  border-color: var(--accent) !important;
  color: var(--accent-light) !important;
}

/* Burger — visible on mobile */
.nav-burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 10px 6px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

@media (min-width: 769px) {
  .nav-burger { display: none; }
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: all var(--dur-med) var(--ease);
}
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: var(--sp-md) var(--container-padding) var(--sp-xl);
}
.nav-mobile.open { display: block; }

.nav-mobile ul { display: flex; flex-direction: column; gap: var(--sp-sm); }

.nav-mobile a {
  font-size: 1.05rem;
  color: var(--text-secondary);
  transition: color var(--dur-fast);
  display: block;
  padding: 0.6rem 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.nav-mobile a:hover,
.nav-mobile a:focus-visible { color: var(--text-primary); }

@media (min-width: 769px) {
  .nav-mobile { display: none !important; }
}