/* ─── Header ──────────────────────────────────────────────── */
.skip-link {
  position: absolute; top: -60px; left: 0; z-index: 9999;
  background: var(--primary); color: #fff;
  padding: 10px 20px; border-radius: 0 0 8px 0;
  transition: top .2s;
}
.skip-link:focus { top: 0; }

.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000; height: var(--header-h);
  background: rgba(26, 26, 46, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: all var(--mid) var(--ease);
}
.header.scrolled {
  background: rgba(26, 26, 46, 0.99);
  box-shadow: 0 4px 24px rgba(0,0,0,.3);
}
.header-inner {
  display: flex; align-items: center; gap: 32px;
  height: 100%;
}

/* 로고 */
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { height: 40px; width: auto; filter: brightness(0) invert(1); }
.logo-text { color: #fff; font-size: 20px; font-weight: 700; }
.logo-text strong { color: var(--accent); }

/* 데스크톱 메뉴 */
.nav-desktop {
  display: flex; align-items: center; gap: 4px;
  margin-left: 24px; flex: 1;
}
.nav-item { position: relative; }
.nav-trigger {
  height: var(--header-h);
  padding: 0 16px;
  color: rgba(255,255,255,.85);
  font-size: 15px; font-weight: 500;
  transition: color var(--fast);
  display: flex; align-items: center;
}
.nav-trigger:hover,
.nav-item.active .nav-trigger { color: #fff; }
.nav-item.active .nav-trigger { border-bottom: 2px solid var(--accent); }

/* 드롭다운 */
.dropdown {
  position: absolute; top: calc(var(--header-h) - 2px); left: 0;
  min-width: 180px;
  background: #fff;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--primary);
  padding: 8px 0;
  animation: fadeDown .18s ease;
}
@keyframes fadeDown {
  from { opacity:0; transform:translateY(-8px); }
  to   { opacity:1; transform:translateY(0); }
}
.dropdown-item {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px;
  font-size: 14px; color: var(--gray-700);
  transition: all var(--fast);
}
.dropdown-item:hover, .dropdown-item.current {
  background: var(--primary-light);
  color: var(--primary);
}

/* CTA 버튼 */
.header-cta { margin-left: auto; flex-shrink: 0; }

/* 햄버거 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--mid);
}

/* 모바일 메뉴 */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--secondary);
  border-top: 1px solid rgba(255,255,255,.1);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}
.mobile-group { border-bottom: 1px solid rgba(255,255,255,.08); }
.mobile-group-header {
  display: flex; align-items: center;
  padding: 14px 24px;
  color: rgba(255,255,255,.85);
  font-size: 15px; font-weight: 500;
  cursor: pointer;
}
.mobile-children { background: rgba(0,0,0,.2); }
.mobile-child {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 36px;
  font-size: 14px; color: rgba(255,255,255,.7);
}
.mobile-child:hover { color: #fff; }

/* 반응형 */
@media (max-width: 1024px) {
  .nav-desktop, .header-cta { display: none; }
  .hamburger { display: flex; }
  .header.mobile-open .nav-mobile { display: flex; }
  .header.mobile-open { height: auto; }
}