/**
 * MONOBUILD 네비게이션 + 메가메뉴 — 이머시브 다크 테마
 * 수정일: 2026-06-02 10:37 (KST)
 * 용도: mix-blend-mode 네비바 + 다크 글라스모피즘 메가메뉴
 */

/* ══════════════════════════════════════════
   네비게이션 바 — 수정일: 2026-06-02 10:37 (KST)
   ══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-height);
  z-index: var(--z-navbar);
  display: flex;
  align-items: center;
  padding: 0 var(--container-padding);
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

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

.nav__logo {
  font-size: 1.25rem;
  font-weight: var(--fw-extrabold);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: #fff;
}

.nav__links {
  display: flex;
  gap: 40px;
}

.nav__links a {
  font-size: 0.95rem; /* 기존 0.875rem과 1.05rem의 중간 크기 */
  font-weight: var(--fw-bold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #ffffff;
  opacity: 0.9;
  transition: opacity var(--transition-base), color var(--transition-base);
}

.nav__links a:hover { 
  opacity: 1;
  color: var(--primary);
}

.nav__cta {
  padding: 10px 28px;
  font-size: 0.9rem; /* CTA 버튼 크기 조정 */
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--background);
  background: #fff;
  border: none;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.nav__cta:hover { transform: scale(1.05); }

/* ══════════════════════════════════════════
   메가메뉴 패널 — 수정일: 2026-06-02 10:37 (KST)
   ══════════════════════════════════════════ */
.megamenu {
  position: fixed;
  top: var(--navbar-height);
  left: 0; right: 0;
  z-index: var(--z-megamenu);
  background: rgba(15,15,15,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-2xl) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-smooth),
              transform var(--transition-smooth),
              visibility var(--transition-smooth);
}

.megamenu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.megamenu__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
}

.megamenu__col-title {
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.megamenu__link {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  transition: background var(--transition-base);
}

.megamenu__link:hover {
  background: rgba(255,255,255,0.04);
}

.megamenu__link-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: rgba(59,130,246,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.megamenu__link-icon svg {
  width: 20px; height: 20px;
  stroke: var(--primary);
  fill: none;
  stroke-width: 1.5;
}

.megamenu__link-title {
  display: block;
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--foreground);
  margin-bottom: 2px;
}

.megamenu__link-desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: var(--lh-normal);
}

/* 빠른 링크 — 수정일: 2026-06-02 10:37 (KST) */
.megamenu__quick-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.megamenu__quick-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.megamenu__quick-link svg {
  width: 16px; height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

.megamenu__quick-link:hover {
  color: var(--foreground);
  background: rgba(255,255,255,0.04);
}

/* 배경 오버레이 — 수정일: 2026-06-02 10:37 (KST) */
.megamenu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: calc(var(--z-megamenu) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
}

.megamenu-backdrop.active {
  opacity: 1;
  visibility: visible;
}

/* ══════════════════════════════════════════
   모바일 메뉴 — 수정일: 2026-06-02 10:37 (KST)
   ══════════════════════════════════════════ */
.nav__hamburger {
  display: none;
  width: 32px; height: 32px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  padding: 0;
}

.nav__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  margin: 4px 0;
  transition: all var(--transition-base);
}

/* ══════════════════════════════════════════
   반응형 — 수정일: 2026-06-02 10:37 (KST)
   ══════════════════════════════════════════ */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }
  .megamenu { display: none; }
}