/* ============================================================
   NAVBAR.CSS — glass nav, hover links, mobile fullscreen menu
   ============================================================ */

.navbar {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s var(--ease), padding 0.4s var(--ease);
  border-bottom: 1px solid transparent;
  padding: 0.6rem 0;
}

/* State injected by navbar.js after scrolling */
.navbar.scrolled {
  background: rgba(5, 8, 22, 0.6);
  border-bottom-color: var(--line);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Logo */
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.logo-mark {
  width: 16px; height: 16px;
  border-radius: 5px;
  background: var(--grad);
  box-shadow: 0 0 16px rgba(124, 58, 237, 0.7);
  animation: spinPulse 6s linear infinite;
}
@keyframes spinPulse {
  0%, 100% { transform: rotate(0) scale(1); }
  50% { transform: rotate(180deg) scale(0.82); }
}

/* Nav links with animated underline + label slide */
.nav-links { display: flex; gap: 0.4rem; }
.nav-link {
  position: relative;
  padding: 0.5rem 0.9rem;
  font-size: 0.96rem;
  color: var(--muted);
  overflow: hidden;
  transition: color 0.3s var(--ease);
}
.nav-link span {
  display: inline-block;
  transition: transform 0.4s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0.9rem; right: 0.9rem;
  bottom: 0.35rem; height: 1.5px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav-link:hover { color: var(--white); }
.nav-link:hover span { transform: translateY(-2px); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-cta { padding: 0.7rem 1.3rem; font-size: 0.92rem; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  z-index: 1001;
}
.nav-toggle span {
  width: 26px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile fullscreen menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(5, 8, 22, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}
.mobile-menu.open { opacity: 1; visibility: visible; }

.mobile-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
}
.mobile-link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 9vw, 3rem);
  font-weight: 500;
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), color 0.3s var(--ease);
}
.mobile-link:hover { color: var(--neon); }
.mobile-menu.open .mobile-link {
  opacity: 1;
  transform: translateY(0);
}
/* Staggered reveal of mobile items */
.mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.08s; }
.mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.14s; }
.mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.20s; }
.mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.26s; }
.mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.32s; }
.mobile-cta { font-size: 1.05rem; margin-top: 0.8rem; }