/* sections/site-header — v3. Mega-menu refined (Stripe/Linear style). */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__wrap {
  max-width: var(--wrap-wide);
  margin-inline: auto;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: 68px;
}

/* ── Brand ──────────────────────────────────────────────── */
.site-header__brand {
  display: inline-flex;
  align-items: center;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}
.site-header__brand:hover { color: var(--color-text); }

.site-header__name {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
}

.site-header__logo {
  display: block;
  height: 18px;
  width: auto;
  max-width: none;
}
@media (min-width: 1000px) {
  .site-header__logo { height: 22px; }
}

/* ── Nav (desktop) ──────────────────────────────────────── */
.site-header__nav { display: none; }
@media (min-width: 1000px) { .site-header__nav { display: block; } }

.site-header__menu {
  list-style: none !important;
  margin: 0; padding: 0;
  display: flex;
  gap: var(--space-2);
}

.site-header__item {
  position: relative;
  list-style: none !important;
}
.site-header__item::before { content: none !important; } /* defensive */

.site-header__item > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-muted);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  padding: 22px var(--space-4);
  transition: color var(--motion-fast) var(--ease-out);
  position: relative;
}
.site-header__item > a:hover { color: var(--color-text); }
.site-header__item > a[aria-current="page"] {
  color: var(--color-text);
  font-weight: 700;
}
.site-header__item > a[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: -1px; left: var(--space-4); right: var(--space-4);
  height: 2px;
  background: var(--color-accent);
}

/* Dropdown chevron */
.site-header__item--has-menu > a::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
  margin-left: 2px;
  opacity: 0.5;
  transition: transform var(--motion-fast) var(--ease-out), opacity var(--motion-fast) var(--ease-out);
}
.site-header__item--has-menu:hover > a::after,
.site-header__item--has-menu:focus-within > a::after {
  transform: rotate(225deg);
  margin-top: 3px;
  opacity: 1;
}

/* ── Mega-menu panel ────────────────────────────────────── */
.site-header__panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 48px -16px rgba(14, 17, 22, 0.12), 0 4px 16px rgba(14, 17, 22, 0.04);
  padding: var(--space-6);
  display: grid;
  gap: var(--space-8);

  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--motion-base) var(--ease-out),
    transform var(--motion-base) var(--ease-out),
    visibility 0s linear var(--motion-base);
  z-index: 60;
  margin-top: -4px;
}
.site-header__item--has-menu:hover > .site-header__panel,
.site-header__item--has-menu:focus-within > .site-header__panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;
}

.site-header__panel--single {
  grid-template-columns: minmax(280px, 320px);
}
.site-header__panel--double {
  grid-template-columns: repeat(2, minmax(260px, 300px));
  gap: var(--space-6);
}
.site-header__panel--triple {
  grid-template-columns: repeat(3, minmax(220px, 280px));
  gap: var(--space-6);
}
@media (max-width: 1200px) {
  .site-header__panel--triple {
    grid-template-columns: repeat(3, minmax(200px, 240px));
  }
}

.site-header__group { min-width: 0; }

.site-header__group-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-subtle);
  margin: 0 0 var(--space-3) var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.site-header__sublist {
  list-style: none !important;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-header__sublist li { list-style: none !important; }
.site-header__sublist li::before { content: none !important; }

.site-header__sublist a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  transition: background var(--motion-fast) var(--ease-out);
}
.site-header__sublist a:hover {
  background: var(--color-surface);
}

.site-header__sub-title {
  display: block;
  font-size: var(--type-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.005em;
  line-height: 1.3;
}

.site-header__sub-desc {
  display: block;
  font-size: var(--type-xs);
  color: var(--color-muted);
  line-height: 1.4;
  word-break: keep-all;
}

.site-header__sublist-divider {
  height: 1px;
  margin: var(--space-2) var(--space-3);
  background: var(--color-border);
  pointer-events: none;
}
.site-header__mobile-divider {
  height: 1px;
  margin: var(--space-2) 0;
  background: var(--color-border);
  pointer-events: none;
}

/* ── Actions (desktop) ──────────────────────────────────── */
.site-header__actions { display: none; }
@media (min-width: 1000px) { .site-header__actions { display: flex; align-items: center; } }

/* ── Language toggle (desktop) ─────────────────────────── */
.site-header__lang {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  letter-spacing: 0.06em;
  margin-right: var(--space-4);
  transition: opacity 0.15s ease;
}
.site-header__lang:hover { opacity: 0.7; }

/* ── Mobile CTA (문의하기) ─────────────────────────────── */
.site-header__cta-mobile {
  display: inline-flex;
  margin-left: auto;
  padding: 8px 14px;
  font-size: 13px;
  flex-shrink: 0;
}
@media (min-width: 1000px) { .site-header__cta-mobile { display: none; } }
@media (max-width: 999px) {
  .site-header__wrap { gap: var(--space-2); }
}

/* ── Mobile toggle ─────────────────────────────────────── */
.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text);
}
.site-header__toggle:hover { background: var(--color-surface); }
.site-header__toggle svg { width: 22px; height: 22px; }
/* aria-expanded에 따라 hamburger ↔ X 아이콘 전환 */
.site-header__toggle .site-header__toggle-icon--close { display: none; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon--menu { display: none; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon--close { display: inline-block; }
@media (min-width: 1000px) { .site-header__toggle { display: none; } }

/* ── Mobile panel ──────────────────────────────────────── */
.site-header__mobile {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4);
  background: var(--color-bg);
  max-height: calc(100vh - 68px);
  overflow-y: auto;
}
@media (min-width: 1000px) { .site-header__mobile { display: none !important; } }

.site-header__mobile-menu {
  list-style: none !important;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-header__mobile-menu li { list-style: none !important; }
.site-header__mobile-menu li::before { content: none !important; }

.site-header__mobile-menu a {
  display: block;
  padding: var(--space-3) var(--space-3);
  color: var(--color-text);
  font-size: var(--type-base);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-md);
}
.site-header__mobile-menu a:hover { background: var(--color-surface); }
.site-header__mobile-menu a.btn { margin-top: var(--space-3); justify-content: center; }

.site-header__mobile-group {
  margin-top: var(--space-4);
  margin-bottom: 2px;
}
.site-header__mobile-group:first-child { margin-top: 0; }

.site-header__mobile-menu .site-header__mobile-group > a {
  display: block;
  padding: var(--space-3);
  font-family: var(--font-sans);
  font-size: var(--type-sm);
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--color-accent);
  text-decoration: none;
  border-radius: var(--radius-md);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
  margin-top: var(--space-3);
}
.site-header__mobile-menu .site-header__mobile-group:first-child > a {
  border-top: 0;
  margin-top: 0;
  padding-top: var(--space-3);
}
.site-header__mobile-menu .site-header__mobile-group > a:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent-hover);
}