:root{--build-id:"f27941c9-59e7-424f-b2d9-7c307324bc32";}
/* mubiti49.shop - 우이이나49 조명 사이트 */
/* 변수: L21, C03, T16, B01, N09, K01, S05, H01, F5, CS01 */

:root {
  /* C03: Sky Blue 색상 팔레트 */
  --primary: #0ea5e9;
  --bg: #f0f9ff;
  --text: #0c4a6e;
  --accent: #38bdf8;
  --heading: var(--text);
  --link: var(--text);
  --white: #ffffff;
  --gray-light: #e0f2fe;
  --gray-medium: #bae6fd;
  --gray-dark: #075985;

  /* S05: 여백 시스템 */
  --section-padding: 7rem 0;
  --container-width: 1500px;
  --gap: 5rem;
}

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

/* F5: Android Core 폰트 스택 */
body {
  font-family: Roboto, "Noto Sans KR", "Malgun Gothic", "Segoe UI", -apple-system, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0em;
  color: var(--text);
  background-color: var(--bg);
}

/* H01: 헤딩 스타일 (반응형 clamp) */
h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--heading);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(1.875rem, 4vw, 2.625rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--heading);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--heading);
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary);
}

/* 접근성: Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: var(--white);
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* N09: 네비게이션 - 상단 투명 + 좌측 로고 + 중앙 검색 + 우측 메뉴 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(240, 249, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-medium);
  z-index: 1000;
  transition: background 0.3s ease;
}

nav {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.search-box {
  flex: 1;
  max-width: 400px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.625rem 1rem;
  border: 2px solid var(--gray-medium);
  border-radius: 9999px;
  font-size: 0.875rem;
  background: var(--white);
  color: var(--text);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav-menu a:hover {
  color: var(--primary);
}

.nav-menu a[aria-current="page"] {
  color: var(--primary);
  font-weight: 600;
}

.nav-menu a[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
}

/* 햄버거 메뉴 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s ease;
}

/* 컨테이너 */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* 섹션 */
section {
  padding: var(--section-padding);
}

/* L21: 클래식 히어로 */
.hero {
  padding-top: calc(7rem + 80px);
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--white) 100%);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.125rem;
  line-height: 1.75;
  margin-bottom: 2.5rem;
  color: var(--gray-dark);
}

/* B01: 라운드 버튼 */
.btn {
  display: inline-block;
  border-radius: 9999px;
  padding: 1rem 2.5rem;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

/* K01: 그림자 카드 */
.card {
  border-radius: 1rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: 2rem;
  background: var(--white);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transform: translateY(-4px);
}

/* 2열 특징 섹션 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
  margin-top: 3rem;
}

.feature-item {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-icon {
  font-size: 3rem;
  color: var(--primary);
}

/* 갤러리 섹션 */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  aspect-ratio: 4 / 3;
  background: var(--gray-light);
}

.gallery-item svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* CS01: 리스트형 구조 */
.list-section ul {
  list-style: none;
  margin-top: 2rem;
}

.list-section li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--gray-light);
  display: flex;
  gap: 1rem;
}

.list-section li:last-child {
  border-bottom: none;
}

.list-icon {
  font-size: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
}

.list-content h3 {
  margin-bottom: 0.5rem;
}

.list-content p {
  color: var(--gray-dark);
  margin-bottom: 0;
}

/* 중앙 CTA */
.cta-section {
  text-align: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  border-radius: 2rem;
  padding: 5rem 2rem;
  margin: 4rem 0;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.cta-section p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

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

.cta-section .btn:hover {
  background: var(--gray-light);
  transform: translateY(-2px);
}

/* 푸터 */
footer {
  background: var(--text);
  color: var(--white);
  padding: 3rem 0 2rem;
  margin-top: 5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9375rem;
}

.footer-section a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

/* 반응형 */
@media (max-width: 1024px) {
  :root {
    --container-width: 100%;
    --section-padding: 5rem 0;
    --gap: 3rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  nav {
    padding: 1rem;
  }

  .search-box {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: none;
  }

  .nav-menu.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: calc(5rem + 70px);
  }

  section {
    padding: 3rem 0;
  }
}