/* Common Styles - Shared across all pages */

/* CSS Variables */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a1a;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --accent: #2c5aa0;
  --accent-dark: #1e3a5f;
  --accent-light: #e6f0ff;
  --accent-rgb: 44, 90, 160;
  --border: #e2e8f0;
  --border-hover: #cbd5e0;
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans KR", "Inter", -apple-system, BlinkMacSystemFont,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Top Navigation */
.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0.75rem 1rem;
  border-radius: 12px;
  position: relative;
}

/* 기존 ::before 효과 제거 */

/* 새로운 호버 효과 - 색상 변화 중심 */
.logo:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.logo-text-only {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  line-height: 1.1;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo-home-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.logo-home-icon i {
  font-size: 1.8rem;
  color: var(--accent);
}

.logo-main {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent) 0%, #44a0ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.8;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover .logo-main {
  background: linear-gradient(
    135deg,
    var(--accent-dark) 0%,
    var(--accent) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo:hover .logo-sub {
  color: var(--accent-dark);
  font-weight: 600;
  opacity: 1;
}

.logo:hover .logo-text-only {
  opacity: 0;
  transform: scale(0.8);
}

.logo:hover .logo-home-icon {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.75rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  border-radius: 6px;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.nav-link.active {
  color: var(--accent);
  background: rgba(44, 90, 160, 0.05);
}

.nav-link i {
  font-size: 0.75rem;
  transition: transform 0.2s;
}

.nav-item:hover > .nav-link i {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  margin-top: 0.5rem;
  padding: 0.5rem;
}

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

.dropdown-item {
  display: block;
  padding: 0.65rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: 6px;
  transition: all 0.2s;
}

.dropdown-item:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.dropdown-item i {
  font-size: 0.75rem;
  margin-left: 0.25rem;
}

.dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 0.5rem 0;
}

.dropdown-category {
  padding: 0.5rem 1rem 0.25rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle i {
  font-size: 1.5rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.mobile-menu-toggle:hover i {
  color: var(--accent);
  transform: scale(1.1);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
  pointer-events: auto;
}

/* Main Content */
.main-content {
  margin-top: 70px;
  min-height: 100vh;
}

/* Product/Page Headers - ensure proper spacing below nav */
.main-content > .product-header,
.main-content > header.product-header,
.main-content > header.page-header {
  margin-top: 0;
}

/* Ensure product content doesn't hide behind fixed nav */
.product-header,
.page-header {
  position: relative;
}

/* Common Button Styles */
.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: #1e4380;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(44, 90, 160, 0.2);
}

.btn-secondary {
  background: white;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
}

/* Footer */
footer {
  padding: 4rem 3rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-sections-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  font-weight: 400;
  letter-spacing: 0.02em;
  opacity: 0.9;
  max-width: 100%;
  margin-top: 0.5rem;
  position: relative;
  padding-left: 1rem;
}

.footer-desc::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 3px;
  background: linear-gradient(135deg, var(--accent) 0%, #44a0ff 100%);
  border-radius: 2px;
  opacity: 0.7;
}

.footer-brand-section {
  padding-right: 2rem;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.footer-brand-section::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--accent) 50%,
    transparent 100%
  );
  opacity: 0.3;
}

.footer-product-section {
  padding-right: 1.5rem;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
}

.footer-product-section::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(68, 160, 255, 0.4) 50%,
    transparent 100%
  );
  opacity: 0.2;
}

.footer-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-links-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.footer-links-column {
  display: flex;
  flex-direction: column;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  /* 모바일에서 네비게이션 높이 유지 */
  .nav-wrapper {
    height: 70px;
    min-height: 70px;
  }

  .nav-container {
    height: 70px;
    min-height: 70px;
    padding: 0 1.5rem;
  }

  /* 모바일 로고 스타일 */
  .logo {
    padding: 0.5rem 0.75rem;
  }

  .logo-text-only {
    gap: 0.5rem;
  }

  .logo-main {
    font-size: 1.2rem;
  }

  .logo-sub {
    font-size: 0.7rem;
  }

  .nav-menu {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
    padding: 0.75rem;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-menu-toggle i {
    font-size: 1.5rem;
  }

  .nav-menu.mobile-open {
    display: flex !important;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    height: auto !important;
    min-height: calc(100vh - 70px) !important;
    background: white;
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    overflow-y: auto;
    z-index: 1000;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    min-height: 48px; /* 터치 영역 확보 */
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    margin: 0;
    padding: 0 0 0 1rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-item.mobile-open .dropdown-menu {
    max-height: 800px; /* 더 많은 메뉴 항목을 위해 증가 */
  }

  .dropdown-item {
    padding: 0.85rem 1rem;
    min-height: 44px; /* 터치 영역 확보 */
  }

  .mobile-menu-overlay {
    display: block;
  }

  /* 모바일에서 main-content 상단 여백 확보 */
  .main-content {
    margin-top: 70px;
    padding-top: 0;
  }

  footer {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  /* 모바일 footer 구분선 처리 */

  .footer-sections-row {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-brand-section {
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 1.5rem;
  }

  .footer-brand-section::after {
    display: none;
  }

  .footer-product-section {
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 1.5rem;
  }

  .footer-product-section::after {
    display: none;
  }

  .footer-contact-section {
    padding-bottom: 0;
  }
}

/* 작은 모바일 화면 추가 최적화 */
@media (max-width: 480px) {
  .nav-container {
    padding: 0 1rem;
  }

  /* 작은 모바일 로고 스타일 */
  .logo {
    padding: 0.4rem 0.6rem;
  }

  .logo-text-only {
    gap: 0.4rem;
  }

  .logo-main {
    font-size: 1.1rem;
  }

  .logo-sub {
    font-size: 0.65rem;
  }

  .mobile-menu-toggle {
    padding: 0.5rem;
  }
}