/* ============================================================
   iKardia — Navigation
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(17, 24, 41, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(61, 217, 179, 0.12);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background: rgba(17, 24, 41, 1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--section-pad-x);
}

/* ── Logo ── */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-mark {
  /*width: 40px;
  height: 40px;
  flex-shrink: 0;*/
}

.nav__logo-text {


}

.nav__logo-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: 1.5px;
  line-height: 1;
  display: block;
}

.nav__logo-tagline {
  font-family: var(--font-display);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--color-teal);
  display: block;
  margin-top: 2px;
}

/* ── Links ── */
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__link {
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--color-teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

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

.nav__link:hover::after,
.nav__link.active::after {
  transform: scaleX(1);
}

/* ── CTA Button ── */
.nav__cta {
  background: var(--color-teal);
  color: var(--color-navy) !important;
  padding: 9px 22px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav__cta:hover {
  background: var(--color-teal-dark) !important;
  transform: translateY(-1px);
  color: var(--color-navy) !important;
}

.nav__cta::after { display: none !important; }

/* ── Mobile Hamburger ── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  display: block;
}

.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); }

/* ── Mobile Menu ── */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(17, 24, 41, 0.98);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(61, 217, 179, 0.12);
  padding: 24px var(--section-pad-x);
  z-index: 999;
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

.nav__mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav__mobile-links li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav__mobile-links a {
  display: block;
  padding: 14px 0;
  color: rgba(255, 255, 255, 0.75);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__mobile-links a:hover { color: var(--color-teal); }

.nav__mobile-cta {
  display: inline-block;
  margin-top: 20px;
  background: var(--color-teal);
  color: var(--color-navy);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .nav__mobile { display: block; }
}