/* 
  J&Tech 엘리베이터 초프리미엄 다크 디자인 시스템 (jandtech-premium-core.css)
*/

/* 1. 디자인 토큰 및 기본 초기화 */
:root {
  --primary: #2D7FF9; /* 더 밝고 가독성 좋은 블루 */
  --primary-hover: #1E6FE8;
  --primary-glow: rgba(45, 127, 249, 0.3);
  --bg-dark: #0a0a0a;
  --bg-deep: #050505;
  --card-bg: rgba(15, 15, 15, 0.45);
  --card-border: rgba(255, 255, 255, 0.03);
  --card-border-focus: rgba(255, 255, 255, 0.15);
  --text-light: #ffffff;
  --text-muted: #8f8f8f;
  --text-dark: #b3b3b3;
  --accent: #2D7FF9;
  --danger: #ff3b30;
  --naver: #03C75A; /* 네이버 그린 */
}

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

html, body {
  width: 100%;
  min-height: 100%;
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-x: hidden;
  line-height: 1.5;
}

/* 2. 사전 로딩 오버레이 */
#loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-deep);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 99999;
  opacity: 1;
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.8s;
}

#loading-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.loader-line-container {
  width: 240px;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 20px;
}

#loader-progress {
  width: 0%;
  height: 100%;
  background-color: var(--text-light);
  transition: width 0.1s ease-out;
}

#loader-text {
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* 3. 완전 투명 헤더 네비게이션 */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-light);
}

.logo-image {
  width: 40px;
  height: auto;
}

.logo-text-wrapper {
  display: flex;
  flex-direction: column;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  color: #ffffff;
}

.logo-sub {
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: #ffffff;
  margin-top: 4px;
}

.nav-menu {
  display: flex;
  gap: 32px;
}

.nav-link {
  text-decoration: none;
  color: #ffffff !important;
  font-size: 0.95rem;
  font-weight: 400;
  transition: all 0.3s;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.3s ease;
}

.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-tel {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light);
}

.btn-tel:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* 모바일 햄버거 토글러 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-light);
  transition: all 0.3s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* 4. 모바일 드로워 */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 98;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s;
}

.mobile-nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100vh;
  background-color: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(20px);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 100px 30px 40px;
  gap: 24px;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.open {
  right: 0;
}

.mobile-nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 1.15rem;
  font-weight: 400;
  transition: color 0.3s;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--text-light);
}

.btn-tel-mobile {
  background-color: var(--primary);
  color: #fff;
  font-weight: 600;
  margin-top: auto;
  text-align: center;
  padding: 14px 20px;
}

/* 5. 우측 플로팅 퀵 메뉴 */
.floating-quick-menu {
  position: fixed;
  right: 24px;
  bottom: 120px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 9999;
}

.floating-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.floating-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.8);
}

.blog-btn {
  background-color: var(--naver);
  color: #ffffff !important;
}

.tel-btn {
  background-color: var(--primary);
  color: #ffffff !important;
}

.tel-btn svg {
  display: block;
}

.kakao-btn {
  background-color: #fef01b;
  color: #3c1e1e !important;
}

/* 6. 인트로 캔버스 영역 */
.scroll-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  display: block;
  pointer-events: none;
  background-color: var(--bg-deep);
  transform: translateY(0);
}

.scroll-section {
  position: relative;
  width: 100%;
  z-index: 2;
  background-color: transparent;
  pointer-events: auto;
}

#section-1 { height: auto; }
#section-2 { height: auto; background-color: var(--bg-dark); }
#section-3 { height: 400vh; }
#section-4 { height: auto; background-color: var(--bg-dark); }

/* 7. Hero 오버레이 영역 */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 8%;
  background: transparent;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 3;
}

.hero-tag {
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
  display: block;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 30px;
  color: var(--text-light);
  text-shadow: 0 4px 15px rgba(0, 0, 0, 0.8);
}

.hero-desc {
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9);
}

.hero-desc-note {
  display: block;
  font-size: 0.9rem;
  color: var(--primary);
  margin-top: 12px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-actions .btn {
  padding: 14px 28px;
  font-size: 0.95rem;
  border-radius: 4px;
}

.hero-actions .btn-primary {
  background-color: var(--primary);
  color: #fff;
  font-weight: 700;
}

.hero-actions .btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.hero-actions .btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  background-color: transparent;
}

.hero-actions .btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: #fff;
}

.hero-actions .btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  background-color: rgba(255, 255, 255, 0.05);
}

.hero-actions .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* 하단 무한 롤링 띠 */
.hero-marquee-container {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.03);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 0;
  overflow: hidden;
  white-space: nowrap;
  z-index: 3;
}

.hero-marquee-wrapper {
  display: inline-flex;
  animation: marquee 30s linear infinite;
}

.hero-marquee-item {
  display: inline-flex;
  align-items: center;
  margin-right: 50px;
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
}

.check-icon {
  color: var(--primary);
  margin-right: 8px;
  font-weight: 700;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* 8. 정보 전달 본문 섹션 공통 */
.info-section {
  padding: 120px 0;
  border-bottom: 1px solid var(--card-border);
}

.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 80px;
}

.section-tag {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  color: var(--text-light);
}

.section-desc {
  color: #ffffff !important;
  font-size: 1.05rem;
  line-height: 1.65;
  font-weight: 300;
}

/* 가독성 증대를 위한 흰색 강제 통일 텍스트 */
.custom-white-text {
  color: #ffffff !important;
  font-weight: 300;
  line-height: 1.7;
}

/* 9. 시네마틱 양 옆 이분할(Split) 패러랙스 그리드 레이아웃 */
.parallax-split-layout {
  display: grid;
  grid-template-columns: 0.85fr 520px 0.85fr;
  gap: 0;
  align-items: start;
}

.split-column {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.split-center-gap {
  pointer-events: none;
}

/* 10. 미니멀 글래스모피즘 카드 컴포넌트 */
/* 일반 카드 (크기 30% 축소 튜닝 및 극도로 투명한 글래스 디자인) */
.device-card {
  background-color: rgba(15, 15, 15, 0.15) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.05) !important;
  border-radius: 16px !important;
  padding: 20px 24px !important;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3) !important;
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  opacity: 0.3;
  display: flex;
  align-items: center;
  gap: 16px;
}

.device-card:hover {
  border-color: rgba(0, 102, 255, 0.35) !important;
  box-shadow: 0 15px 40px rgba(0, 102, 255, 0.15) !important;
  transform: translateY(-3px);
  opacity: 1;
}

/* 스크롤 인터랙션용 활성화 클래스 */
.device-card.scroll-visible {
  opacity: 1;
}

.device-card-content {
  position: relative;
  z-index: 2;
  flex: 1;
}

/* 카드 이미지 스타일 */
.device-image {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* 좌측 컬럼: 이미지 왼쪽 배치 */
.device-image-left {
  order: -1;
}

/* 우측 컬럼: 이미지 오른쪽 배치 */
.device-image-right {
  order: 1;
}

.device-name {
  font-size: 1.05rem !important;
  font-weight: 600;
  margin-bottom: 10px !important;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.device-name .sub-name {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.device-description {
  color: #ffffff !important;
  font-size: 0.82rem !important;
  line-height: 1.55;
  font-weight: 300;
}

/* [크기 유지] 대표 품목 하이라이트 카드 (로프브레이크) */
.device-card.featured-card {
  padding: 32px !important;
  border-radius: 20px !important;
  background: linear-gradient(135deg, rgba(15, 15, 15, 0.25) 0%, rgba(0, 102, 255, 0.08) 100%) !important;
  border: 1px solid rgba(0, 102, 255, 0.15) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4) !important;
  opacity: 0.3;
}

.device-card.featured-card:hover {
  border-color: rgba(0, 102, 255, 0.5) !important;
  box-shadow: 0 24px 60px rgba(0, 102, 255, 0.2) !important;
  opacity: 1;
}

.device-card.featured-card.scroll-visible {
  opacity: 1;
}

.device-card.featured-card .device-name {
  font-size: 1.25rem !important;
  margin-bottom: 14px !important;
}

.device-card.featured-card .device-description {
  font-size: 0.88rem !important;
  line-height: 1.6;
}

.card-badge {
  background-color: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.device-feature-points {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.device-feature-points p {
  font-size: 0.9rem;
  color: #ffffff !important;
  line-height: 1.5;
}

.device-feature-points strong {
  color: var(--primary);
  font-weight: 600;
}

/* 11. 수리 및 유지보수 섹션 (크기 30% 축소 튜닝) */
.repair-item {
  background-color: rgba(15, 15, 15, 0.15) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.05) !important;
  border-radius: 14px !important;
  padding: 18px 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25) !important;
  transition: all 0.3s;
  opacity: 0.3;
  display: flex;
  align-items: center;
  gap: 14px;
}

.repair-item:hover {
  border-color: var(--primary) !important;
  background-color: rgba(20, 20, 20, 0.4) !important;
  opacity: 1;
}

.repair-item.scroll-visible {
  opacity: 1;
}

.repair-icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.repair-item h4 {
  font-size: 0.9rem !important;
  font-weight: 600;
  margin-bottom: 7px;
  color: #ffffff !important;
}

.repair-item p {
  color: #ffffff !important;
  font-size: 0.76rem !important;
  line-height: 1.4;
  font-weight: 300;
}

/* repair-item 컨텐츠 래퍼 */
.repair-content {
  flex: 1;
}

/* repair-item 이미지 스타일 */
.repair-image {
  width: 90px;
  height: 90px;
  object-fit: cover;
  border-radius: 10px;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

/* 좌측 컬럼: 이미지 왼쪽 배치 */
.repair-image-left {
  order: -1;
}

/* 우측 컬럼: 이미지 오른쪽 배치 */
.repair-image-right {
  order: 1;
}

/* [크기 유지] 체계적인 유지보수 프로그램 박스 */
.maintenance-box {
  background-color: rgba(15, 15, 15, 0.01) !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  border-radius: 24px !important;
  padding: 50px !important;
  margin-top: 60px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2) !important;
}

.maintenance-box-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
}

.maintenance-box-header h3 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: #ffffff !important;
}

.maintenance-box-header p {
  color: #ffffff !important;
  font-size: 0.95rem;
  font-weight: 300;
}

.maintenance-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.flow-step {
  text-align: center;
  position: relative;
}

.flow-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  top: 25px;
  right: -25px;
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.1);
}

.flow-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
}

.flow-step h5 {
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: #ffffff !important;
}

.flow-step p {
  color: #ffffff !important;
  font-size: 0.88rem;
  line-height: 1.6;
  font-weight: 300;
}

/* 12. 빠른 상담 CTA */
.quick-cta-section {
  background: linear-gradient(135deg, #0a111e 0%, var(--bg-deep) 100%);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 80px 0;
  text-align: center;
}

.quick-cta-section h2 {
  font-size: 1.85rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.quick-cta-section p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 32px;
  font-weight: 300;
}

.btn-cta {
  background-color: var(--primary);
  color: #fff;
  font-size: 1.05rem;
  padding: 16px 36px;
  border-radius: 8px;
}

.btn-cta:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 20px var(--primary-glow);
  transform: translateY(-2px);
}

/* 13. 진행 절차 타임라인 */
.process-timeline {
  display: flex;
  flex-direction: column;
  gap: 40px;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  width: 1px;
  height: 100%;
  background-color: var(--card-border);
}

.timeline-item {
  position: relative;
  padding-left: 80px;
}

.timeline-content {
  background-color: var(--card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 30px;
  position: relative;
}

.timeline-num {
  position: absolute;
  left: -80px;
  top: 12px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--bg-dark);
  border: 1px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  z-index: 3;
}

.timeline-content h3 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: var(--text-light);
}

.timeline-content p {
  color: var(--text-dark);
  font-size: 0.92rem;
  line-height: 1.6;
  font-weight: 300;
}

/* 14. FAQ 아코디언 컴포넌트 */
.accordion-container {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  border-bottom: 1px solid var(--card-border);
}

.accordion-header {
  width: 100%;
  padding: 26px 0;
  background: none;
  border: none;
  text-align: left;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 400;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  outline: none;
}

.accordion-header span {
  padding-right: 20px;
}

.accordion-icon {
  font-size: 1.3rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  font-weight: 300;
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.accordion-content {
  padding-bottom: 26px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  font-weight: 300;
}

/* 15. 컨택트 폼 섹션 */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-title {
  font-size: 2.25rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 24px;
}

.contact-meta-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin: 40px 0;
}

.meta-item {
  display: flex;
  gap: 20px;
}

.meta-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.meta-text h5 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-light);
}

.meta-text p {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 300;
}

.contact-social-icons {
  display: flex;
  gap: 16px;
}

.social-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.3s;
}

.social-circle:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* 견적 신청 박스 */
.contact-form-box {
  background-color: var(--card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 48px;
}

.form-title {
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.form-group {
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group label .required {
  color: var(--danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid #282828;
  border-radius: 6px;
  padding: 13px 16px;
  color: var(--text-light);
  font-size: 0.92rem;
  font-family: inherit;
  transition: all 0.3s;
}

.form-control::placeholder {
  color: #555;
}

.form-control:focus {
  border-color: var(--primary);
  outline: none;
  background-color: rgba(255, 255, 255, 0.04);
  box-shadow: 0 0 12px var(--primary-glow);
}

textarea.form-control {
  resize: none;
}

.btn-submit {
  width: 100%;
  background-color: var(--primary);
  color: #fff;
  font-weight: 700;
  padding: 14px 20px;
  font-size: 0.95rem;
  margin-top: 8px;
}

.btn-submit:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 20px var(--primary-glow);
}

/* 16. 푸터 */
#footer {
  background-color: var(--bg-deep);
  border-top: 1px solid var(--card-border);
  padding: 60px 0;
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-brand h4 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 300;
}

.footer-info {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-info p {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 300;
}

.footer-info .copyright {
  margin-top: 16px;
  color: #555555;
}
/* 17. 유지보수 프로모션 카드 (섹션 3) */
.maintenance-promo-card {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 280px;
  padding: 28px 24px;
  background: rgba(15, 15, 15, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  text-align: center;
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.25, 1, 0.5, 1);
  z-index: 10;
  will-change: transform, opacity;
}

.maintenance-promo-card.scroll-visible {
  opacity: 1;
}

.promo-badge {
  display: inline-block;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--primary), #1E6FE8);
  border-radius: 16px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #ffffff;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.promo-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  color: #ffffff !important;
  margin-bottom: 18px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.promo-price {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-bottom: 6px;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.price-label {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
}

.price-amount {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.price-unit {
  font-size: 0.9rem;
  font-weight: 500;
  color: #ffffff;
}

.price-vat {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.promo-subtitle {
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff !important;
  margin-bottom: 18px;
}

.promo-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--primary);
  color: #ffffff !important;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 50px;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  box-shadow: 0 4px 16px rgba(45, 127, 249, 0.3);
}

.promo-cta:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(45, 127, 249, 0.5);
}

.promo-cta svg {
  width: 16px;
  height: 16px;
}

/* 18. 반응형 미디어 쿼리 */
@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }

  .parallax-split-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .split-center-gap {
    display: none;
  }

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

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .footer-layout {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-info {
    text-align: center;
    align-items: center;
  }

  .hero-title {
    font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  .info-section {
    padding: 80px 0;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .maintenance-flow {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .flow-step:not(:last-child)::after {
    display: none;
  }

  .contact-form-box {
    padding: 30px 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .floating-quick-menu {
    right: 16px;
    bottom: 80px;
  }

  .floating-btn {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }

  .maintenance-promo-card {
    padding: 24px 20px;
    max-width: 240px;
  }

  .promo-badge {
    font-size: 0.6rem;
    padding: 5px 12px;
    margin-bottom: 12px;
  }

  .promo-title {
    font-size: 1rem;
    margin-bottom: 14px;
  }

  .price-amount {
    font-size: 1.5rem;
  }

  .price-label {
    font-size: 0.65rem;
  }

  .price-unit {
    font-size: 0.75rem;
  }

  .price-vat {
    font-size: 0.6rem;
    margin-bottom: 10px;
  }

  .promo-subtitle {
    font-size: 0.65rem;
    margin-bottom: 14px;
  }

  .promo-cta {
    padding: 10px 24px;
    font-size: 0.75rem;
    gap: 6px;
  }

  .promo-cta svg {
    width: 14px;
    height: 14px;
  }
}