.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              background var(--transition-base);
}

.nav.scrolled {
  background: rgba(11, 1, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.nav.hidden {
  transform: translateY(-100%);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  z-index: 101;
}

.nav__logo img {
  height: 30px;
  width: auto;
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  list-style: none;
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__cta {
  display: flex;
  align-items: center;
}

/* ── HAMBURGER ─────────────────────────────────────────────── */

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  position: relative;
  z-index: 102;
  flex-shrink: 0;
}

.nav__hamburger span {
  display: block;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── FLOATING CARD DROPDOWN ────────────────────────────────── */

.nav__mobile {
  position: fixed;
  top: calc(var(--nav-height) + 8px);
  right: var(--container-pad);
  z-index: 99;
  width: 90%;
  background: rgba(18, 5, 32, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: var(--space-3) 0 var(--space-4);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
              0 0 0 1px rgba(255, 255, 255, 0.04);
  transform: translateY(-8px) scale(0.97);
  transform-origin: top right;
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.25s ease;
  pointer-events: none;
}

.nav__mobile.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  padding: 0 var(--space-2);
  margin-bottom: var(--space-3);
}

.nav__mobile-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-base);
  font-weight: var(--weight-semi);
  color: var(--color-text-muted);
  padding: var(--space-3);
  border-radius: 8px;
  transition: color var(--transition-fast),
              background var(--transition-fast),
              opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  transform: translateY(-6px);
}

.nav__mobile-link svg {
  width: 14px;
  height: 14px;
  stroke: var(--color-text-muted);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  transition: opacity var(--transition-fast), stroke var(--transition-fast);
  flex-shrink: 0;
}

.nav__mobile-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.nav__mobile-link:hover svg {
  opacity: 1;
  stroke: var(--color-accent);
}

.nav__mobile.open .nav__mobile-link {
  opacity: 1;
  transform: translateY(0);
}

.nav__mobile.open .nav__mobile-link:nth-child(1) { transition-delay: 0.04s; }
.nav__mobile.open .nav__mobile-link:nth-child(2) { transition-delay: 0.08s; }
.nav__mobile.open .nav__mobile-link:nth-child(3) { transition-delay: 0.12s; }
.nav__mobile.open .nav__mobile-link:nth-child(4) { transition-delay: 0.16s; }

.nav__mobile-footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3) 0;
  border-top: 1px solid var(--color-border);
  opacity: 0;
  transition: opacity 0.3s ease 0.18s;
}

.nav__mobile.open .nav__mobile-footer {
  opacity: 1;
}

.nav__mobile-footer .btn {
  width: 100%;
  justify-content: center;
}

.nav__mobile-contact {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav__mobile-contact a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.nav__mobile-contact a:hover {
  color: var(--color-text);
}

/* ── RESPONSIVE ────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }
}