/* ============================================
   MergeUi Public Navigation (공개 페이지용)
   ============================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--merge-space-4) 0;
  background: rgba(6,6,10,0.8);
  backdrop-filter: blur(16px) saturate(1.6);
  border-bottom: 1px solid var(--merge-border);
}

[data-theme="light"] .nav {
  background: rgba(250,250,250,0.85);
}

.nav-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--merge-space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 20px;
  font-weight: 900;
  display: flex;
  align-items: center;
  gap: var(--merge-space-2);
  letter-spacing: -0.5px;
}

.nav-logo .mark {
  width: 32px;
  height: 32px;
  border-radius: var(--merge-radius-md);
  background: linear-gradient(135deg, var(--merge-brand), var(--merge-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 900;
  color: white;
}

.nav-links {
  display: flex;
  gap: var(--merge-space-7);
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  color: var(--merge-text-muted);
  font-weight: 500;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--merge-text-primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--merge-space-3);
}

.nav-signin {
  font-size: 14px;
  color: var(--merge-text-muted);
  font-weight: 500;
  transition: color 0.15s;
}

.nav-signin:hover {
  color: var(--merge-text-primary);
}

.nav-cta {
  padding: var(--merge-space-2) var(--merge-space-6);
  background: var(--merge-brand);
  color: white;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--merge-radius-full);
  transition: all 0.15s;
}

.nav-cta:hover {
  background: var(--merge-brand-light);
}

/* Hamburger */
.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 36px;
  height: 36px;
  position: relative;
  z-index: 1001;
}

.nav-burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--merge-text-primary);
  margin: 5px auto;
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-burger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-burger.active span:nth-child(2) { opacity: 0; }
.nav-burger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(6,6,10,0.95);
  backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--merge-space-7);
}

[data-theme="light"] .mobile-menu {
  background: rgba(250,250,250,0.95);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  font-size: 24px;
  font-weight: 700;
  color: var(--merge-text-secondary);
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--merge-text-primary);
}

/* Footer */
footer {
  padding: 40px 32px;
  border-top: 1px solid var(--merge-border);
}

.footer-inner {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-size: 12px;
  color: var(--merge-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--merge-space-6);
  list-style: none;
}

.footer-links a {
  font-size: 12px;
  color: var(--merge-text-muted);
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--merge-text-primary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links,
  .nav-right { display: none; }
  .nav-burger { display: block; }
  .nav-inner { padding: 0 20px; }
  .footer-inner {
    flex-direction: column;
    gap: var(--merge-space-4);
    text-align: center;
  }
}