/* nav.css */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--inner-pad);
  height: 68px;
  background: rgba(8, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

nav.scrolled {
  background: rgba(8, 10, 15, 0.98);
}

.nav-logo {
  font-family: var(--font-ui);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(120deg, var(--cyan), var(--white));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-logo span {
  -webkit-text-fill-color: var(--white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}

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

.nav-cta {
  color: var(--cyan) !important;
  border: 1.5px solid var(--cyan);
  padding: 8px 22px;
  border-radius: var(--radius-sm);
  transition: background 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
  background: rgba(77, 200, 240, 0.1) !important;
  box-shadow: 0 0 20px var(--cyan-glow) !important;
}

/* ── Hamburger (mobile) ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .nav-hamburger { display: flex; cursor: pointer; background: transparent; border: none; }

  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    height: calc(100vh - 68px);
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 24px;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-links a {
    font-size: 1.25rem;
  }
}