/* ==========================================================================
   ComDoctor Inc. - 반응형 스타일시트
   캘거리 IT 지원 및 컴퓨터 수리 서비스
   ========================================================================== */

:root {
  /* 색상 테마 정의 */
  --primary: #0284c7;         /* 테크 스카이 블루 */
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --secondary: #0f172a;       /* 딥 슬레이트 네이비 */
  --secondary-light: #1e293b;
  --accent: #2563eb;          /* 로열 블루 포인트 */
  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  --hero-gradient: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(30, 41, 59, 0.9) 100%);
  
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-alt: #f1f5f9;
  
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1200px;
}

/* 기본 초기화 및 폰트 설정 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
  color: var(--text-main);
  background-color: var(--bg-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* 공통 컨테이너 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* 섹션 제목 및 타이포그래피 공통 */
.section-title-wrap {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background-color: var(--primary-light);
  color: var(--primary-hover);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 공통 버튼 스타일 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.quote-btn {
  width: 8.5rem;
  height: 2.75rem;
  padding: 0 1rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-white);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--text-white);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

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

/* ==========================================================================
   상단 헤더 및 네비게이션
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(15, 23, 42, 0.99);
}

.navbar {
  display: grid;
  grid-template-columns: 30% 40% 30%;
  align-items: center;
  height: 4.75rem;
}

.brand-group {
  display: flex;
  align-items: center;
  justify-self: center;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  justify-self: end;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1) drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
  transition: var(--transition);
}

.logo-link:hover .brand-logo-img {
  transform: scale(1.05);
}

.brand-text-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  min-width: 0;
  text-align: left;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-name span {
  color: var(--primary);
}

.brand-location {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brand-since {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.2;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.75rem;
  justify-content: center;
  justify-self: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.75rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: #e2e8f0;
  padding: 0.5rem 0.25rem;
  position: relative;
}

.nav-link svg {
  width: 1.7rem;
  height: 1.7rem;
  display: block;
  stroke-width: 2.2;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0.15rem;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

.nav-link:focus-visible {
  color: var(--primary);
  outline: 2px solid var(--primary);
  outline-offset: 5px;
  border-radius: 4px;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: center;
  justify-self: center;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  min-width: 3.25rem;
  height: 2rem;
  padding: 0 0.45rem;
  border: 0;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-white);
  font-size: 0.7rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.lang-toggle:hover,
.lang-toggle:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.lang-icon {
  flex: 0 0 auto;
  color: var(--text-light);
}

.header-email {
  color: var(--text-light);
  font-size: 0.8rem;
  white-space: nowrap;
}

.header-email:hover,
.header-email:focus-visible {
  color: var(--text-white);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 모바일 메뉴 토글 버튼 */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* ==========================================================================
   히어로 메인 섹션
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6.5rem;
  padding-bottom: 4.5rem;
  background-color: var(--secondary);
  background-image: var(--hero-gradient), url('../images/background.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--text-white);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  background-color: rgba(2, 132, 199, 0.25);
  border: 1px solid rgba(2, 132, 199, 0.5);
  color: #7dd3fc;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(6px);
}

.hero-title {
  font-size: 3.15rem;
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 2.25rem;
  max-width: 580px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-features-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 2rem;
}

.hero-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.hero-feat-icon {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  background: rgba(2, 132, 199, 0.25);
  color: #38bdf8;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.hero-feat-text h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.2rem;
}

.hero-feat-text p {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.35;
}

.hero-card-preview {
  position: relative;
  z-index: 2;
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 3rem 2.25rem;
  backdrop-filter: blur(20px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  text-align: center;
}

.hero-card-preview .logo-main {
  width: 230px;
  max-width: 90%;
  height: auto;
  margin: 0 auto 1.75rem auto;
  filter: brightness(0) invert(1) drop-shadow(0 10px 24px rgba(0, 0, 0, 0.45));
  transition: var(--transition);
}

.hero-card-preview .logo-main:hover {
  transform: scale(1.03);
}

.hero-card-preview h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hero-card-preview p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 1.75rem;
}

.quick-contact-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.quick-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: #e2e8f0;
}

.quick-item svg {
  width: 1.25rem;
  height: 1.25rem;
  color: #38bdf8;
  flex-shrink: 0;
}

/* ==========================================================================
   고객 대상별 솔루션 (개인 고객 vs 기업/매장)
   ========================================================================== */
.audience-section {
  padding: 5.5rem 0;
  background-color: #ffffff;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.audience-card {
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.25rem;
  position: relative;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.audience-card.personal {
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-top: 4px solid var(--primary);
}

.audience-card.business {
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
  border-top: 4px solid var(--accent);
}

.audience-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.audience-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.audience-icon {
  width: 3.75rem;
  height: 3.75rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: var(--primary-light);
  color: var(--primary);
  flex-shrink: 0;
}

.audience-card.business .audience-icon {
  background: #dbeafe;
  color: var(--accent);
}

.audience-header h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--secondary);
}

.audience-header p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.audience-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.audience-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-main);
}

.audience-features li svg {
  width: 1.25rem;
  height: 1.25rem;
  color: #10b981;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* ==========================================================================
   전문 서비스 목록 섹션
   ========================================================================== */
.services-section {
  padding: 6.5rem 0;
  background-color: var(--bg-alt);
}

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

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card-wide {
  grid-column: 1 / -1;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: #cbd5e1;
}

.service-icon-wrap {
  width: 4.25rem;
  height: 4.25rem;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  padding: 0.85rem;
  transition: var(--transition);
}

.service-card:hover .service-icon-wrap {
  background: var(--accent-gradient);
}

.service-card:hover .service-icon-wrap img {
  filter: brightness(0) invert(1);
}

.service-card:hover .service-icon-wrap svg {
  color: #ffffff;
}

.service-icon-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-icon-wrap svg {
  width: 2.25rem;
  height: 2.25rem;
  color: var(--primary);
  transition: var(--transition);
}

.service-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 0.75rem;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.service-items {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid var(--border-light);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service-items li {
  font-size: 0.875rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.service-items-wide {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.service-items li::before {
  content: '\2022';
  color: var(--primary);
  font-weight: bold;
  font-size: 1.1rem;
}

/* ==========================================================================
   고객사 및 시공 실적 섹션
   ========================================================================== */
.portfolio-section {
  padding: 6.5rem 0;
  background-color: #ffffff;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.portfolio-item {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  cursor: pointer;
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  background: #ffffff;
}

.portfolio-item img {
  max-height: 55px;
  max-width: 120px;
  object-fit: contain;
  filter: grayscale(80%);
  opacity: 0.85;
  transition: var(--transition);
}

.portfolio-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

.portfolio-item .client-title {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--secondary);
}

.portfolio-item .client-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   선택해야 하는 이유 (특장점) 섹션
   ========================================================================== */
.why-section {
  padding: 6.5rem 0;
  background-color: var(--secondary);
  color: var(--text-white);
  position: relative;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.why-card {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.75rem;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.why-card:hover {
  transform: translateY(-5px);
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(2, 132, 199, 0.5);
}

.why-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-full);
  background: rgba(2, 132, 199, 0.2);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1.25rem auto;
}

.why-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.why-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ==========================================================================
   상담 및 문의 / 폼 섹션
   ========================================================================== */
.contact-section {
  padding: 6.5rem 0;
  background-color: var(--bg-alt);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.contact-info-card h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.contact-info-card > p {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.contact-method-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.method-icon-box {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.method-details h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 0.2rem;
}

.method-details p, .method-details a {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.method-details a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* 카카오톡 상담 배너 */
.kakao-banner {
  background: linear-gradient(135deg, #fee500 0%, #ffd900 100%);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #191919;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.kakao-banner:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.kakao-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.kakao-left img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.kakao-left h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 0.15rem;
}

.kakao-left p {
  font-size: 0.8rem;
  color: #3c1e1e;
}

/* 문의 접수 폼 카드 */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.contact-form-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-body);
  color: var(--text-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* ==========================================================================
   하단 푸터
   ========================================================================== */
.site-footer {
  background-color: var(--secondary);
  color: var(--text-light);
  padding: 4.5rem 0 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand .footer-logo {
  max-height: 48px;
  width: auto;
  margin-bottom: 1.25rem;
  filter: brightness(0) invert(1) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 340px;
}

.footer-links h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 1.25rem;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-light);
}

.footer-links a:hover {
  color: #38bdf8;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #38bdf8;
  font-weight: 600;
  cursor: pointer;
}

.back-to-top:hover {
  text-decoration: underline;
}

/* ==========================================================================
   카카오톡 팝업 모달
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  padding: 2.25rem 2rem;
  position: relative;
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--bg-alt);
  border: none;
  border-radius: var(--radius-full);
  width: 2.25rem;
  height: 2.25rem;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-close-btn:hover {
  background: var(--border-color);
  color: var(--text-main);
}

.modal-qr-img {
  max-width: 200px;
  margin: 1.5rem auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

/* ==========================================================================
   반응형 미디어 쿼리 (모바일 & 태블릿)
   ========================================================================== */
@media (max-width: 900px) {
  .nav-menu {
    position: fixed;
    top: 4.75rem;
    left: 0;
    right: 0;
    background: var(--secondary);
    flex-direction: column;
    padding: 2rem;
    gap: 1.25rem;
    box-shadow: var(--shadow-lg);
    display: none;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-menu li,
  .nav-link {
    width: 100%;
  }

  .nav-link {
    min-height: 3rem;
  }

  .brand-text-block {
    display: none;
  }

  .navbar {
    grid-template-columns: 1fr auto;
  }

  .brand-group {
    justify-self: start;
  }

  .nav-actions {
    justify-self: end;
  }

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

  .mobile-nav-toggle {
    display: block;
  }

  .header-contact {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.2rem;
  }
}

@media (max-width: 1024px) {
  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .nav-menu {
    gap: 1rem;
  }

  .nav-actions {
    gap: 0.65rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-card-preview {
    display: none;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .service-items-wide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .site-header {
    background-color: rgba(15, 23, 42, 0.98);
  }

  .nav-menu {
    padding: 1.5rem 1rem;
  }

  .nav-actions {
    gap: 0.35rem;
  }

  .nav-actions .btn-sm {
    display: none;
  }

  .hero-section {
    min-height: auto;
    padding-top: 7.5rem;
    padding-bottom: 4rem;
    background-attachment: scroll;
  }

  .hero-title {
    font-size: 2.35rem;
    overflow-wrap: anywhere;
  }

  .hero-title br {
    display: none;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-features-list {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .audience-card,
  .contact-info-card,
  .contact-form-card {
    padding: 1.75rem 1.25rem;
  }

  .audience-header {
    align-items: flex-start;
  }

  .audience-header h3 {
    font-size: 1.25rem;
  }

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

  .service-card-wide {
    grid-column: auto;
  }

  .service-items-wide {
    grid-template-columns: 1fr;
  }

  .section-title-wrap {
    margin-bottom: 2.5rem;
  }

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

  .section-desc {
    font-size: 1rem;
  }

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

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

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

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

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

  .kakao-banner {
    align-items: flex-start;
    gap: 0.75rem;
  }

  .kakao-left {
    min-width: 0;
  }

  .kakao-left h4,
  .kakao-left p {
    overflow-wrap: anywhere;
  }

  .modal-overlay {
    padding: 1rem;
  }

  .modal-box {
    padding: 2rem 1.25rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .brand-location {
    display: none;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .brand-logo-img {
    height: 44px;
  }

  .hero-badge {
    align-items: flex-start;
    font-size: 0.78rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-buttons,
  .hero-buttons .btn {
    width: 100%;
  }

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

  .portfolio-item {
    min-height: 120px;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}