/* =====================
   HEADER
===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  width: 190px;
  height: 60px;
  overflow: hidden;
}

.site-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-bg);
}

.nav-link svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition);
}

.nav-item:hover .nav-link svg {
  transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 180px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-2) 0;
  z-index: 100;
}

.nav-item:hover .dropdown {
  display: block;
}

.dropdown a {
  display: block;
  padding: var(--space-2) var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition), background var(--transition);
}

.dropdown a:hover {
  color: var(--color-primary);
  background: var(--color-bg);
}

/* Header CTA */
.header-cta {
  flex-shrink: 0;
}

.btn-inquiry {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn-inquiry:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

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

/* =====================
   BREADCRUMB
===================== */
.breadcrumb-bar {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3) 0;
}

.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.breadcrumb .sep {
  color: var(--color-border);
}

.breadcrumb .current {
  color: var(--color-text-secondary);
  font-weight: 500;
  white-space: pre-line;
}

/* =====================
   FOOTER
===================== */
.site-footer {
  background: transparent;
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--space-8) 0 var(--space-4);
  border-top: 3px solid var(--color-primary);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.footer-brand .footer-logo {
  width: 360px;
  height: 114px;
  object-fit: contain;
  object-position: left center;
  display: block;
  margin-bottom: var(--space-3);
}

.footer-brand p {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.55;
  color: var(--color-text);
}

.footer-col h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-col ul a {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.footer-col ul a:hover {
  color: var(--color-primary);
}

.footer-contact li {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: var(--space-1);
}

.footer-contact li strong {
  font-weight: 700;
  color: var(--color-text);
  min-width: 36px;
  flex-shrink: 0;
}

.footer-contact a.footer-copy {
  font-weight: 600;
  color: var(--color-text);
}

.footer-contact .footer-copy--text {
  font: inherit;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition);
}

.footer-contact .footer-copy--text:hover {
  color: var(--color-primary);
}

.footer-contact-inline {
  column-gap: var(--space-2);
}

.footer-contact-sep {
  color: var(--color-text-muted);
}

/* common.js — 클립보드 복사 알림 */
.copy-toast {
  position: fixed;
  bottom: max(24px, env(safe-area-inset-bottom, 0px));
  left: 50%;
  z-index: 10001;
  padding: 12px 20px;
  max-width: min(360px, calc(100vw - 32px));
  background: rgba(26, 58, 107, 0.96);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.45;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  opacity: 0;
  transform: translate(-50%, 120%);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
  text-align: center;
}

.copy-toast.copy-toast--visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.footer-cert {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.05em;
}

/* =====================
   CONTAINER
===================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* =====================
   BREADCRUMBS
===================== */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-4);
}

.breadcrumbs a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition);
}

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

.breadcrumbs span {
  color: rgba(255, 255, 255, 0.4);
}

/* =====================
   PAGE HERO
===================== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  padding: var(--space-12) 0;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.page-hero h1 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.page-hero p {
  font-size: var(--font-size-md);
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
}

/* =====================
   SECTION
===================== */
.section {
  padding: var(--space-16) 0;
}

.section-alt {
  background: var(--color-bg);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  margin-top: var(--space-3);
}

/* =====================
   RESPONSIVE HEADER
===================== */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) 0;
    overflow-y: auto;
    border-top: 1px solid var(--color-border);
    z-index: 999;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    padding: var(--space-4) var(--space-6);
    border-radius: 0;
    font-size: var(--font-size-base);
  }

  .dropdown {
    position: static;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--color-border);
    border-radius: 0;
    padding: 0;
    background: var(--color-bg);
  }

  .nav-item:hover .dropdown,
  .nav-item.open .dropdown {
    display: block;
  }

  .dropdown a {
    padding: var(--space-3) var(--space-10);
  }

  .menu-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-logo {
    width: 150px;
    height: 48px;
  }

  .footer-brand .footer-logo {
    width: 250px;
    height: 79px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .page-hero h1 {
    font-size: var(--font-size-2xl);
  }
}