/**
 * modern-professional.css
 * 기존 Bootstrap 템플릿 위에 얹는 보완 레이어입니다.
 * AstroWind 류 랜딩(중립 톤, 타이포 스케일, 여백, 미세한 대비)에서 차용한 토큰만 적용하며,
 * 빌드 도구 없이 GitHub Pages 등 정적 호스팅과 호환됩니다.
 */

:root {
  --mp-bg-deep: #0f1419;
  --mp-bg-elevated: #161d27;
  --mp-surface: rgba(255, 255, 255, 0.04);
  --mp-border: rgba(255, 255, 255, 0.08);
  --mp-text: rgba(255, 255, 255, 0.92);
  --mp-text-muted: rgba(255, 255, 255, 0.62);
  --mp-accent: #3b82f6;
  --mp-accent-hover: #60a5fa;
  --mp-radius: 12px;
  --mp-radius-sm: 8px;
  --mp-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 8px 24px rgba(0, 0, 0, 0.18);
  --mp-font-sans: "KoPubWorldDotumMedium", "Pretendard", "Apple SD Gothic Neo",
    "Malgun Gothic", system-ui, sans-serif;
  --mp-tracking-tight: -0.02em;
  /* AstroWind max-w-7xl(1280px)에 대응하는 콘텐츠 폭 */
  --mp-container-max: 1280px;
  /* 섹션 세로 리듬 (py-12 / lg:py-20 에 가깝게) */
  --mp-section-y: 3rem;
  --mp-section-y-lg: 5rem;
}

/* ----- 레이아웃: 컨테이너 폭 통일 (Bootstrap .container 확장) ----- */
@media (min-width: 1200px) {
  body.darker .container,
  body.light-version .container {
    max-width: var(--mp-container-max);
  }
}

/* ----- 본문 래퍼 (페이지 구조 통일, skip #main-content 대상) ----- */
.site-main {
  display: block;
}

/* ----- 스킵 링크 (키보드·스크린 리더) ----- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.75rem;
  z-index: 100000;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: var(--mp-accent);
  border-radius: var(--mp-radius-sm);
  text-decoration: none;
  transition: box-shadow 0.2s ease;
}

.skip-link:focus {
  left: 0.75rem;
  outline: 2px solid #fff;
  outline-offset: 2px;
  box-shadow: var(--mp-shadow);
}

body.light-version .skip-link {
  color: #fff;
}

.contact_info .footer-mail-link,
.footer-content-area .footer-mail-link {
  color: #e2e8f0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.contact_info .footer-mail-link:hover,
.footer-content-area .footer-mail-link:hover {
  color: #fff;
}

/* 선택: 긴 랜딩 섹션에 수동 부여 시 AstroWind식 리듬과 유사 */
.section-rhythm {
  padding-top: var(--mp-section-y);
  padding-bottom: var(--mp-section-y);
}

@media (min-width: 992px) {
  .section-rhythm {
    padding-top: var(--mp-section-y-lg);
    padding-bottom: var(--mp-section-y-lg);
  }
}

.section-rhythm--tight {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

@media (min-width: 992px) {
  .section-rhythm--tight {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
}

/* ----- Base: 다크 바디 톤 정리 ----- */
body.darker {
  font-family: var(--mp-font-sans);
  background: var(--mp-bg-deep);
  background-image: radial-gradient(
      ellipse 120% 80% at 50% -20%,
      rgba(59, 130, 246, 0.12),
      transparent 55%
    ),
    linear-gradient(180deg, #121820 0%, var(--mp-bg-deep) 45%, #0c1016 100%);
}

body.darker p {
  color: var(--mp-text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

body.darker h1,
body.darker h2,
body.darker h3,
body.darker h4,
body.darker h5,
body.darker h6 {
  color: var(--mp-text);
  letter-spacing: var(--mp-tracking-tight);
}

/* ----- 네비게이션: 스크롤 시 전문적인 서피스 ----- */
#banner.navbar {
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
  transition: background-color 0.35s ease, box-shadow 0.35s ease,
    backdrop-filter 0.35s ease;
}

#banner.navbar-white:not(.shrink) {
  background: transparent !important;
}

#banner.shrink {
  animation: none;
  background: rgba(15, 20, 25, 0.88) !important;
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  box-shadow: 0 1px 0 var(--mp-border);
}

#banner.shrink .navbar-nav .nav-item .nav-link {
  color: rgba(255, 255, 255, 0.88) !important;
}

#banner.shrink .navbar-nav .nav-item .nav-link:hover {
  color: var(--mp-accent-hover) !important;
}

#banner.shrink .navbar-brand,
#banner.shrink .login-btn {
  color: #fff !important;
}

.navbar-nav .nav-item .nav-link {
  padding: 0.65rem 0.85rem !important;
  border-radius: var(--mp-radius-sm);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.navbar-nav .nav-item .nav-link:hover,
.navbar-nav .nav-item .nav-link:focus {
  background-color: rgba(255, 255, 255, 0.06);
}

.navbar-expand-lg .navbar-nav .dropdown-menu {
  border: 1px solid var(--mp-border);
  border-radius: var(--mp-radius-sm);
  box-shadow: var(--mp-shadow);
  background: var(--mp-bg-elevated);
  padding: 0.35rem 0;
  margin-top: 0.5rem;
}

.dropdown-item {
  color: rgba(255, 255, 255, 0.85);
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: rgba(59, 130, 246, 0.15);
  color: #fff;
}

.navbar .dropdown-menu .dropdown-header {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

body.light-version .navbar .dropdown-menu .dropdown-header {
  color: rgba(15, 23, 42, 0.45);
}

/* ----- 테마 토글 버튼 ----- */
.login-btn {
  border: 1px solid var(--mp-border) !important;
  background: var(--mp-surface) !important;
  color: #fff !important;
  min-height: 40px;
  line-height: 1.2 !important;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  border-radius: var(--mp-radius-sm) !important;
  font-weight: 600;
  letter-spacing: 0.04em !important;
}

.login-btn:hover,
.login-btn:focus {
  background: rgba(255, 255, 255, 0.1) !important;
  border-color: rgba(255, 255, 255, 0.18) !important;
  color: #fff !important;
}

.login-btn:focus-visible {
  outline: 2px solid var(--mp-accent);
  outline-offset: 2px;
}

/* ----- 히어로 ----- */
.hero-section.de-3 {
  min-height: min(88vh, 820px);
  padding-top: 5.5rem;
  padding-bottom: 3rem;
  background-blend-mode: normal;
}

@media (max-width: 991px) {
  .hero-section.de-3 {
    min-height: auto;
    padding-top: 5rem;
    padding-bottom: 2.5rem;
  }
}

.welcome-content h1 {
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 700;
  line-height: 1.35;
  max-width: 36rem;
}

.welcome-content p {
  max-width: 34rem;
}

/* ----- CTA: 단색 + 보조 윤곽 (그라데이션 과다 완화) ----- */
.more-btn {
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--mp-radius-sm) !important;
  border: 1px solid transparent;
  box-shadow: none;
  background: var(--mp-accent) !important;
  background-image: none !important;
  min-height: 48px;
  line-height: 1.2 !important;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  padding: 0 1.35rem !important;
  transition: background-color 0.2s ease, transform 0.15s ease,
    box-shadow 0.2s ease;
}

.more-btn:hover,
.more-btn:focus {
  background: var(--mp-accent-hover) !important;
  background-image: none !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.more-btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.dream-btn-group .more-btn.mr-3 {
  margin-right: 0.75rem !important;
}

/* 보조 버튼: 두 번째 CTA */
.dream-btn-group .more-btn:nth-child(2) {
  background: transparent !important;
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: none;
}

.dream-btn-group .more-btn:nth-child(2):hover,
.dream-btn-group .more-btn:nth-child(2):focus {
  background: rgba(255, 255, 255, 0.08) !important;
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
  box-shadow: none;
}

/* ----- 섹션 라벨(그라데이션 텍스트) ----- */
.gradient-text {
  background-image: linear-gradient(120deg, #93c5fd 0%, #3b82f6 50%, #a78bfa 100%);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  -webkit-text-fill-color: transparent;
}

.gradient-text.white {
  background-image: linear-gradient(120deg, #e2e8f0 0%, #fff 100%);
}

/* ----- 파트너 스트립 ----- */
.parttns {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--mp-border);
  border-radius: var(--mp-radius);
  padding: 2rem 1.5rem;
}

.parttns .row {
  align-items: center;
  justify-content: center;
}

.parttns img {
  opacity: 0.75;
  filter: grayscale(0.15);
  transition: opacity 0.2s ease;
  max-height: 48px;
  width: auto;
  object-fit: contain;
}

.parttns img:hover {
  opacity: 1;
}

/* ----- 수치(팩트) 카드 ----- */
.pre-sale-bg {
  border: 1px solid var(--mp-border);
  background: var(--mp-surface);
  box-shadow: var(--mp-shadow);
}

.pre-sale-bg::before {
  height: 100%;
  opacity: 0.35;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.45) 0%,
    rgba(99, 102, 241, 0.35) 50%,
    rgba(139, 92, 246, 0.3) 100%
  );
}

.section-heading h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

.section-heading > p.w-text {
  color: var(--mp-text-muted) !important;
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
}

.fact-box .inner {
  border-radius: var(--mp-radius);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-bottom: 3px solid var(--mp-accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.fact-box .icon-box {
  background: linear-gradient(135deg, #3b82f6, #6366f1) !important;
  border-radius: var(--mp-radius-sm);
}

/* ----- 프로젝트 카드 가독성 ----- */
.project_info {
  background-color: rgba(15, 20, 25, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 0 var(--mp-radius-sm) var(--mp-radius-sm) 0;
  padding: 1.25rem 1.5rem;
  max-width: min(100%, 22rem);
  border: 1px solid var(--mp-border);
}

.project_info a {
  border-bottom-color: var(--mp-accent) !important;
  font-weight: 600;
}

.project_img img {
  border-radius: var(--mp-radius);
}

/* ----- 팀 카드 ----- */
.single-team-member {
  border: 1px solid var(--mp-border);
  border-radius: var(--mp-radius);
  background: var(--mp-surface);
  padding: 1.5rem !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.single-team-member:hover {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: var(--mp-shadow);
}

/* ----- 푸터 ----- */
.footer-content-area {
  padding-top: 5rem;
  padding-bottom: 3rem;
  border-top: 1px solid var(--mp-border);
}

.footer-social-info a i:hover {
  color: var(--mp-accent-hover) !important;
}

/* ----- Light 모드 정합 ----- */
body.light-version {
  background: #f1f5f9;
  background-image: none;
}

body.light-version.darker p {
  color: #475569;
}

body.light-version #banner.shrink {
  background: rgba(255, 255, 255, 0.92) !important;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.08);
}

body.light-version #banner.shrink .navbar-nav .nav-item .nav-link {
  color: #1e293b !important;
}

body.light-version .login-btn {
  border-color: rgba(15, 23, 42, 0.12) !important;
  background: rgba(15, 23, 42, 0.04) !important;
  color: #1e293b !important;
}

body.light-version .parttns {
  background: #fff;
  border-color: rgba(15, 23, 42, 0.08);
}

body.light-version .more-btn {
  color: #fff !important;
}

body.light-version .dream-btn-group .more-btn:nth-child(2) {
  color: #1e293b !important;
  border-color: rgba(15, 23, 42, 0.2) !important;
}

body.light-version .single-team-member {
  background: #fff;
  border-color: rgba(15, 23, 42, 0.08);
}

/* ----- 접근성: 포커스 ----- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--mp-accent);
  outline-offset: 2px;
}

/* ----- 모바일: 터치 타깃 ----- */
@media (max-width: 991px) {
  .navbar-nav .nav-item .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .navbar-collapse {
    border-radius: var(--mp-radius-sm);
    margin-top: 0.5rem;
    padding: 0.5rem 0.25rem 1rem !important;
  }

  body.darker .navbar-expand-lg .navbar-collapse,
  body.darker .navbar-collapse {
    background: var(--mp-bg-elevated) !important;
  }

  body.darker .navbar-collapse .navbar-nav .nav-item .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
  }

  body.darker .navbar-collapse .navbar-nav .nav-item .nav-link:hover {
    color: var(--mp-accent-hover) !important;
  }
}

@media (max-width: 500px) {
  body.darker #banner.navbar {
    background: var(--mp-bg-elevated) !important;
  }

  body.darker .navbar-nav {
    border-top-color: var(--mp-border) !important;
  }
}


/* ----- 페이지 타입별 골격 분리 (텍스트 수정 없이 레이아웃만) ----- */
.page-main {
  position: relative;
}

.page-section-group--solutions {
  display: block;
}

.page-solution #solutions-overview,
.page-solution #solutions-consulting {
  position: relative;
}

.page-solution #solutions-consulting {
  border-top: 1px solid var(--mp-border);
}

.page-data #data-catalog .container,
.page-solution #solutions-overview .container,
.page-solution #solutions-consulting .container {
  max-width: var(--mp-container-max);
}

@media (min-width: 992px) {
  .page-data #data-catalog .row,
  .page-solution #solutions-overview .row,
  .page-solution #solutions-consulting .row {
    row-gap: 1rem;
  }
}