/* ==========================================================================
   Narsha Pharm — Design Tokens (see requirements.md §2, §3)
   ========================================================================== */
:root {
  --color-navy: #0B2E5B;
  --color-royal-blue: #0E50C0;
  --color-vivid-blue: #0172FC;
  --color-gold: #E09000;
  --color-white: #FFFFFF;
  --color-light-gray: #F0F0F0;
  --color-text: #1F2937;
  --color-text-muted: #6B7280;

  --font-base: 'Pretendard Variable', Pretendard, 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;

  --header-height: 76px;
  --container-max: 1160px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(11, 46, 91, 0.08);

  scroll-behavior: smooth;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body {
  margin: 0;
  font-family: var(--font-base);
  font-display: swap;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 12px 20px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 3px solid var(--color-royal-blue);
  outline-offset: 2px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid rgba(11, 46, 91, 0.08);
  height: var(--header-height);
}
.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-link { display: flex; align-items: center; }
.logo-img { height: 42px; width: auto; }

.main-nav ul {
  display: flex;
  gap: 36px;
}
.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-navy);
  padding: 8px 0;
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-royal-blue);
  transform: scaleX(0);
  transition: transform .2s ease;
}
.main-nav a:hover::after,
.main-nav a:focus-visible::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: url("../public/images/Warehouse.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-white);
  padding: 120px 24px 100px;
  text-align: center;
}
.hero-inner { max-width: 800px; margin: 0 auto; }
.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 24px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.55), 0 1px 4px rgba(0, 0, 0, 0.4);
}
.hero-title span { display: block; }
.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: rgba(255,255,255,0.9);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.55);
  margin: 0 0 40px;
  font-weight: 500;
}
.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-royal-blue);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-vivid-blue); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.6);
  color: var(--color-white);
}
.btn-outline:hover { border-color: var(--color-white); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ==========================================================================
   Sections (shared)
   ========================================================================== */
.section { padding: 96px 0; }
.section-products { background: var(--color-light-gray); }
.eyebrow {
  color: var(--color-royal-blue);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin: 0 0 12px;
}
.section-title {
  color: var(--color-navy);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
  margin: 0 0 24px;
  line-height: 1.4;
}
.lead {
  font-size: 1.1rem;
  color: var(--color-text);
  max-width: 720px;
  margin: 0 0 8px;
}
.lead-en { color: var(--color-text-muted); font-size: 0.98rem; margin-bottom: 24px; }
.body-text { max-width: 760px; color: var(--color-text); margin: 0 0 56px; }

.tbd-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-gold);
  background: rgba(224, 144, 0, 0.1);
  border: 1px solid rgba(224, 144, 0, 0.35);
  border-radius: 6px;
  padding: 2px 8px;
}
.section-tbd { margin-top: 32px; }

/* ==========================================================================
   About — services / why / stats
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}
.service-card {
  background: var(--color-white);
  border: 1px solid rgba(11,46,91,0.08);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}
.icon-badge {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(14, 80, 192, 0.1);
  color: var(--color-royal-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.icon-badge svg { width: 28px; height: 28px; }
.service-card h3 {
  color: var(--color-navy);
  font-size: 1.1rem;
  margin: 0 0 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ko-sub { font-size: 0.85rem; font-weight: 500; color: var(--color-text-muted); }
.service-card p { margin: 0; color: var(--color-text-muted); font-size: 0.95rem; }

.subsection { margin-top: 72px; }
.subsection-title {
  color: var(--color-navy);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 32px;
  text-align: center;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.why-card {
  background: var(--color-light-gray);
  border-radius: var(--radius-md);
  padding: 28px 22px;
}
.why-num {
  display: inline-block;
  color: var(--color-royal-blue);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.why-card h4 { color: var(--color-navy); margin: 0 0 8px; font-size: 1.05rem; }
.why-card p { margin: 0; color: var(--color-text-muted); font-size: 0.92rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-card {
  text-align: center;
  padding: 28px 12px;
  border-radius: var(--radius-md);
  background: var(--color-navy);
  color: var(--color-white);
}
.stat-num {
  display: block;
  font-size: 2.2rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-white);
}
.stat-num small { font-size: 1.4rem; color: var(--color-gold); }
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.75); }

/* ==========================================================================
   Products
   ========================================================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.product-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .15s ease;
}
.product-card:hover { transform: translateY(-4px); }
.product-icon {
  width: 48px;
  height: 60px;
  margin: 0 auto 16px;
  color: var(--color-royal-blue);
}
.product-card h3 { color: var(--color-navy); font-size: 1.05rem; margin: 0 0 6px; }
.product-cat { margin: 0; color: var(--color-text-muted); font-size: 0.88rem; }

.product-tabs { margin-top: 56px; }
.tab-list {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid rgba(11, 46, 91, 0.1);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 12px 22px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.tab-btn:hover { color: var(--color-navy); }
.tab-btn.active { color: var(--color-royal-blue); border-bottom-color: var(--color-royal-blue); }

.table-scroll {
  overflow-x: auto;
  border: 1px solid rgba(11, 46, 91, 0.12);
  border-radius: var(--radius-md);
}
.product-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.86rem;
  white-space: nowrap;
}
.product-table thead th {
  background: var(--color-navy);
  color: var(--color-white);
  text-align: left;
  padding: 11px 14px;
  font-weight: 600;
  white-space: nowrap;
}
.th-en { display: block; font-size: 0.72rem; font-weight: 400; opacity: 0.75; }
.product-table td {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(11, 46, 91, 0.08);
  color: var(--color-text);
}
.product-table tbody tr:nth-child(even) { background: rgba(240, 240, 240, 0.5); }
.product-table tbody tr:hover { background: rgba(14, 80, 192, 0.07); }

/* ==========================================================================
   Organization
   ========================================================================== */
.org-chart {
  margin-top: 56px;
  text-align: center;
}
.org-ceo {
  display: inline-block;
  background: var(--color-navy);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.1rem;
  padding: 16px 56px;
  border-radius: 10px;
}
.org-teams-row {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
  padding-top: 32px;
}
.org-teams-row::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: rgba(11, 46, 91, 0.2);
}
.org-team-col { position: relative; }
.org-team-col::before {
  content: '';
  position: absolute;
  top: -32px;
  left: 50%;
  width: 2px;
  height: 32px;
  background: rgba(11, 46, 91, 0.2);
  transform: translateX(-50%);
}
.org-team-head {
  background: var(--color-royal-blue);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 10px;
  padding: 16px 12px;
  margin-bottom: 12px;
}
.org-team-en { display: block; font-size: 0.78rem; font-weight: 500; opacity: 0.85; margin-top: 2px; }
.org-team-items { display: flex; flex-direction: column; gap: 10px; }
.org-item {
  background: var(--color-white);
  border: 1px solid rgba(11, 46, 91, 0.18);
  border-radius: 8px;
  padding: 12px 10px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
}
.org-item-en { display: block; font-size: 0.76rem; color: var(--color-text-muted); font-weight: 400; margin-top: 2px; }

@media (max-width: 1023px) {
  .org-teams-row { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
  .org-teams-row::before { display: none; }
  .org-team-col::before { display: none; }
}
@media (max-width: 767px) {
  .org-teams-row { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.85);
  padding: 56px 0 28px;
}
.footer-offices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.footer-office h4 {
  color: var(--color-gold);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 10px;
}
.footer-office p { margin: 0; font-size: 0.9rem; line-height: 1.6; }
.footer-ko { color: rgba(255,255,255,0.6); font-size: 0.82rem; }

.footer-contact {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  font-size: 0.9rem;
}
.footer-bottom {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-bottom .tbd-tag { color: var(--color-gold); border-color: rgba(224,144,0,0.5); background: transparent; }

/* ==========================================================================
   Responsive breakpoints (desktop ≥1024 / tablet 768–1023 / mobile <768)
   ========================================================================== */
@media (max-width: 1023px) {
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
  :root { --header-height: 64px; }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid rgba(11,46,91,0.1);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .25s ease, opacity .25s ease;
    pointer-events: none;
  }
  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
  }
  .main-nav li { border-top: 1px solid rgba(11,46,91,0.06); }
  .main-nav a { display: block; padding: 14px 0; }
  .nav-toggle { display: flex; }

  .hero { padding: 88px 20px 72px; }
  .section { padding: 64px 0; }

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

  .tab-btn { padding: 10px 14px; font-size: 0.88rem; }
  .product-table { font-size: 0.8rem; }

  .footer-offices { grid-template-columns: 1fr; }
}