/* ═══════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════ */

.glass-nav {
  backdrop-filter: blur(16px) saturate(1.2);
  background: rgba(5, 10, 20, 0.65);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  contain: layout style;
}

.glass-nav.scrolled {
  background: rgba(5, 10, 20, 0.88);
  border-bottom-color: rgba(74, 158, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: 1rem;
  flex-wrap: wrap;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}

.logo-icon {
  font-size: 2.2rem;
  color: var(--accent-light);
  filter: drop-shadow(0 0 10px var(--accent));
  animation: floatLogo 9s ease-in-out infinite;
  will-change: transform;
}

@keyframes floatLogo {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-8px) rotate(2deg); }
  75% { transform: translateY(-4px) rotate(-1deg); }
}

.logo-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.logo-text h1 {
  font-size: var(--font-xl);
  font-weight: 900;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #a8d8ff, #64b4ff, #3a8cff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
  display: inline-block;
}

.logo-text span {
  font-size: var(--font-xs);
  font-weight: 300;
  letter-spacing: 2.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  line-height: 1.2;
}

/* Nav links */
.nav-links {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--font-sm);
  position: relative;
  padding-block: 4px;
  transition: color var(--transition-base), text-shadow var(--transition-base);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
  transform: translateX(-50%);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent);
}

.nav-links a:hover {
  color: var(--accent-light);
  text-shadow: 0 0 12px var(--accent-glow);
}

.nav-links a:hover::after {
  width: 100%;
}

/* Cart trigger */
.cart-trigger {
  position: relative;
  font-size: 1.3rem;
  color: var(--text-secondary);
  transition: color var(--transition-base), transform var(--transition-base);
}

.cart-trigger:hover {
  color: var(--accent-light);
  transform: scale(1.1);
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -10px;
  background: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 8px var(--accent-glow);
  opacity: 0;
  transform: scale(0);
  transition: opacity var(--transition-bounce), transform var(--transition-bounce);
}

.cart-badge.active {
  opacity: 1;
  transform: scale(1);
}

/* Outline glow button */
.btn-outline-glow {
  border: 1.5px solid var(--accent);
  background: transparent;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  color: var(--accent-light);
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

.btn-outline-glow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
  opacity: 0.15;
}

.btn-outline-glow:hover::before {
  width: 300px;
  height: 300px;
}

.btn-outline-glow:hover {
  border-color: var(--accent-light);
  box-shadow: 0 0 20px var(--accent-glow), inset 0 0 10px rgba(74, 158, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
}

/* Primary button */
.btn-primary {
  background: linear-gradient(95deg, #1a5fc4, #3a8cff);
  padding: 14px 36px;
  border-radius: var(--radius-full);
  font-weight: 700;
  color: white;
  font-size: var(--font-sm);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(42, 122, 224, 0.35);
  transition: background var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left var(--transition-slow);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: linear-gradient(95deg, #2a7ae0, #5aa8ff);
  box-shadow: 0 8px 30px rgba(42, 122, 224, 0.55), 0 0 20px rgba(74, 158, 255, 0.3);
  transform: translateY(-3px) scale(1.02);
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.98);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-icon {
  width: 1.2rem;
  height: 1.2rem;
  object-fit: contain;
  margin-right: 0.5rem;
}