/* ==========================================================================
   Layout - 레이아웃 관련 스타일
   ========================================================================== */

/* Header */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(12px);
  background-color: rgba(3, 7, 18, 0.6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.site-header-inner {
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-logo-icon {
  width: 2.5rem;
  height: 2.5rem;
  overflow: hidden;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.site-logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.25rem;
}

.site-logo-text {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.025em;
}

@media (min-width: 768px) {
  .site-logo-text {
    font-size: 1.5rem;
  }
}

/* Navigation */
.site-nav {
  display: none;
  align-items: center;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .site-nav {
    display: flex;
  }
}

.site-nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: #9ca3af;
  transition: color 0.3s ease;
}

.site-nav-link:hover {
  color: white;
}

/* Dropdown Navigation */
.nav-item-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: #010309;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 1.25rem;
  padding: 1rem;
  width: 12rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  z-index: 10;
}

.nav-item-dropdown:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #9ca3af;
  border-radius: 0.75rem;
  transition: all 0.2s ease;
}

.nav-dropdown-link:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
}

.nav-dropdown-link.active {
  color: white;
  background-color: rgba(37, 99, 235, 0.1);
}

/* ─── Mega Drawer (사업 영역) — full header width ─── */
/* 메가 드로어를 가진 nav 아이템은 positioning context에서 빠져,
   .site-header(fixed) 기준으로 absolute 배치되어 좌우 끝까지 펼쳐진다. */
.nav-item-mega {
  position: static;
}

.nav-mega {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  background-color: rgba(3, 7, 18, 0.97);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
  padding: 2.25rem 0 2.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 10;
}

.nav-item-mega:hover .nav-mega,
.nav-mega:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-mega-inner {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2.5rem;
  align-items: stretch;
}

.nav-mega-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.nav-mega-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem 1.25rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.2s ease;
  position: relative;
}

.nav-mega-item + .nav-mega-item {
  padding-left: 1.5rem;
  border-left: 1px solid rgba(255, 255, 255, 0.04);
}

.nav-mega-item:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.nav-mega-text {
  flex: 1;
  min-width: 0;
}

.nav-mega-title {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: #f3f4f6;
  margin-bottom: 0.375rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s ease;
}

.nav-mega-item:hover .nav-mega-title {
  color: #22d3ee;
}

.nav-mega-subtitle {
  display: block;
  font-size: 0.75rem;
  color: #6b7280;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.nav-mega-arrow {
  flex-shrink: 0;
  font-size: 0.625rem;
  color: #4b5563;
  transition: transform 0.2s ease, color 0.2s ease;
}

.nav-mega-item:hover .nav-mega-arrow {
  transform: translateX(3px);
  color: #22d3ee;
}

.nav-mega-all {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 0 0;
  margin-top: 0.25rem;
  color: #9ca3af;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 700;
  transition: color 0.2s ease;
}

.nav-mega-all:hover {
  color: #22d3ee;
}

.nav-mega-cta {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 0.75rem;
  padding-left: 2rem;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-mega-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 1.25rem 1.5rem;
  border-radius: 1rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.nav-mega-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.nav-mega-card-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  color: white;
}

.nav-mega-card-cyan {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
}

.nav-mega-card-eyebrow {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.8;
}

.nav-mega-card-title {
  font-size: 1.125rem;
  font-weight: 800;
  margin-top: 0.5rem;
}

.nav-mega-card-icon {
  position: absolute;
  bottom: 0.875rem;
  right: 1rem;
  font-size: 1.75rem;
  opacity: 0.8;
}

/* 좁은 데스크탑에서는 CTA 영역 축소 */
@media (max-width: 1100px) {
  .nav-mega-inner {
    grid-template-columns: 1fr 220px;
    gap: 1.5rem;
  }

  .nav-mega-cta {
    padding-left: 1.5rem;
  }

  .nav-mega-card {
    padding: 1rem;
  }

  .nav-mega-card-title {
    font-size: 1rem;
  }
}

.site-nav-cta {
  padding: 0.625rem 1.5rem;
  background-color: white;
  color: #030712;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 700;
  transition: all 0.3s ease;
}

.site-nav-cta:hover {
  background-color: #06b6d4;
  color: white;
  transform: scale(1.05);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: block;
  font-size: 1.5rem;
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Navigation Panel */
.mobile-nav {
  display: none;
  background-color: rgba(3, 7, 18, 0.98);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  max-height: calc(100vh - 5rem);
  overflow-y: auto;
}

.mobile-nav.open {
  display: block;
  animation: mobileNavSlideDown 0.2s ease-out;
}

@keyframes mobileNavSlideDown {
  from { opacity: 0; transform: translateY(-0.5rem); }
  to { opacity: 1; transform: translateY(0); }
}

@media (min-width: 1024px) {
  .mobile-nav {
    display: none !important;
  }
}

.mobile-nav-inner {
  padding: 1rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

@media (min-width: 768px) {
  .mobile-nav-inner {
    padding: 1rem 3rem 2rem;
  }
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  padding: 0.875rem 1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #d1d5db;
  border-radius: 0.75rem;
  transition: all 0.2s;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-nav-link:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
}

.mobile-nav-cta {
  background-color: white;
  color: #030712 !important;
  border-radius: 9999px;
  text-align: center;
  justify-content: center;
  font-weight: 700;
  margin-top: 0.5rem;
}

.mobile-nav-cta:hover {
  background-color: #06b6d4;
  color: white !important;
}

.mobile-nav-group {
  display: flex;
  flex-direction: column;
}

.mobile-nav-sub {
  display: none;
  flex-direction: column;
  padding-left: 1rem;
}

.mobile-nav-group.open .mobile-nav-sub {
  display: flex;
}

.mobile-nav-group.open .mobile-nav-toggle i {
  transform: rotate(180deg);
}

.mobile-nav-sublink {
  display: block;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  color: #9ca3af;
  border-radius: 0.5rem;
  transition: all 0.2s;
}

.mobile-nav-sublink:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
}

.mobile-nav-divider {
  height: 1px;
  background-color: rgba(255, 255, 255, 0.05);
  margin: 0.5rem 0;
}

/* Main Content */
.site-main {
  padding-top: 5rem;
  min-height: 100vh;
}

/* Footer */
.site-footer {
  padding: 5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background-color: #010309;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo-icon {
  width: 2rem;
  height: 2rem;
  overflow: hidden;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.125rem;
}

.footer-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-nav-title {
  color: white;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.footer-nav-link {
  color: #6b7280;
  transition: color 0.3s ease;
}

.footer-nav-link:hover {
  color: white;
}

.footer-copyright {
  color: #4b5563;
  font-size: 0.875rem;
  text-align: center;
}

/* Container */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding-left: 3rem;
    padding-right: 3rem;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

/* Section Spacing */
.section {
  padding-top: 8rem;
  padding-bottom: 8rem;
}

.section-sm {
  padding-top: 5rem;
  padding-bottom: 5rem;
}