/* =================================================================
   layout.css — Header (6-menu) + Footer
   SNJ Industrial Systems · single brand
   ================================================================= */

/* ===== HEADER ===== */
.site-head {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 60;
  background: rgba(245, 248, 252, 0.86);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}
[data-theme="dark"] .site-head {
  background: rgba(5, 11, 23, 0.78);
  border-color: rgba(143,178,229,.10);
}

.site-head__row {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex; align-items: center; gap: 12px;
}
.brand__mark {
  height: 38px;
  width: auto;
  max-width: 130px;
  object-fit: contain;
  display: block;
}

/* Theme-aware logo swap.
   Light theme (default + [data-theme="light"]) shows --light, hides --dark.
   Dark theme reverses it. Both images are kept in DOM so layout never shifts. */
.brand__mark--dark { display: none; }
[data-theme="dark"] .brand__mark--light { display: none; }
[data-theme="dark"] .brand__mark--dark  { display: block; }

@media (max-width: 540px) {
  .brand__mark { height: 32px; max-width: 110px; }
}
.brand__mark--foot { height: 56px; max-width: 200px; margin-bottom: 18px; }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fg-heading);
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--fg-mute);
  margin-top: 4px;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 4px;
}
.nav__item {
  position: relative;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-body);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__item:hover { color: var(--fg-heading); background: var(--bg-alt); }
.nav__item.is-active { color: var(--accent); }
.nav__item.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav__item--disabled { color: var(--fg-faint); cursor: not-allowed; }
.nav__item--disabled:hover { background: transparent; color: var(--fg-faint); }
.nav__item--disabled::before {
  content: "준비중";
  position: absolute; top: -2px; right: 2px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: .1em;
  color: var(--fg-faint);
  background: var(--bg-alt);
  padding: 1px 4px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

.head-actions { display: flex; align-items: center; gap: 10px; }
/* Subtle separator between language and theme toggles */
.head-actions .lang-toggle + .theme-toggle {
  margin-left: 2px;
  position: relative;
}
.head-actions .lang-toggle + .theme-toggle::before {
  content: "";
  position: absolute;
  left: -7px; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 16px;
  background: var(--border-strong);
  opacity: .55;
}
[data-theme="dark"] .head-actions .lang-toggle + .theme-toggle::before {
  background: rgba(143,178,229,.22);
}
@media (max-width: 540px) {
  .head-actions { gap: 8px; }
  .head-actions .lang-toggle + .theme-toggle { margin-left: 0; }
  .head-actions .lang-toggle + .theme-toggle::before { display: none; }
}

.theme-toggle, .menu-toggle {
  background: transparent;
  border: 1px solid var(--border-strong);
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-body);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.theme-toggle:hover, .menu-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

.menu-toggle { display: none; }
.menu-toggle .bars { width: 16px; height: 12px; position: relative; }
.menu-toggle .bars::before, .menu-toggle .bars::after, .menu-toggle .bars span {
  content: ""; position: absolute; left: 0; right: 0; height: 1.5px; background: currentColor; border-radius: 1px;
}
.menu-toggle .bars::before { top: 0; }
.menu-toggle .bars span { top: 50%; transform: translateY(-50%); display: block; }
.menu-toggle .bars::after { bottom: 0; }

@media (max-width: 980px) {
  .nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav.is-open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg);
    padding: 16px var(--gutter) 22px;
    border-bottom: 1px solid var(--border);
    gap: 4px;
    align-items: stretch;
  }
  .nav.is-open .nav__item { padding: 12px 14px; }
}

.head-spacer { height: 64px; }

/* =================================================================
   FOOTER
   ================================================================= */
.site-foot {
  background: var(--navy-gradient-soft);
  color: var(--on-dark);
  padding: 80px 0 28px;
  margin-top: 0;
  position: relative;
}
.site-foot::before {
  /* top metallic line */
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: var(--metallic-line);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(143,178,229,.12);
}
.foot-brand .foot-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  color: #FFFFFF;
}
.foot-brand .foot-desc {
  color: rgba(232,238,247,.66);
  font-size: 14px;
  line-height: 1.65;
  max-width: 38ch;
  margin: 0;
}

.foot-col h6 {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--blue-300);
  font-weight: 500;
}
.foot-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.foot-col a, .foot-col span {
  color: rgba(232,238,247,.82);
  font-size: 14px;
  transition: color var(--t-fast) var(--ease);
}
.foot-col a:hover { color: var(--blue-300); }
.foot-col .muted {
  color: rgba(232,238,247,.52);
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}
.foot-col .pending {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(232,238,247,.48);
}
.foot-col .pending::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(47,123,201,.18);
}

.foot-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12px;
  color: rgba(232,238,247,.5);
}
.foot-bottom .legal {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

@media (max-width: 980px) {
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .foot-brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
}

/* =================================================================
   LANGUAGE TOGGLE — segmented control (KR | EN)
   ================================================================= */
.lang-toggle {
  display: inline-flex;
  background: var(--bg-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2px;
  height: 36px;
  align-items: stretch;
  position: relative;
}
[data-theme="dark"] .lang-toggle {
  background: rgba(20,32,66,.6);
  border-color: rgba(143,178,229,.22);
}

.lang-toggle__opt {
  appearance: none;
  border: 0;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--fg-mute);
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
  min-width: 38px;
}
.lang-toggle__opt:hover { color: var(--fg-heading); }
.lang-toggle__opt.is-active {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 1px 2px rgba(15,23,42,.16);
}
[data-theme="dark"] .lang-toggle__opt.is-active {
  background: var(--blue-400);
  color: #FFFFFF;
  box-shadow: 0 1px 3px rgba(0,0,0,.5);
}

@media (max-width: 540px) {
  .lang-toggle { height: 32px; }
  .lang-toggle__opt { padding: 0 9px; font-size: 10.5px; min-width: 34px; }
}

/* =================================================================
   v3.2.6 — Footer theme tokens + 2-column sitemap + compact layout
   ================================================================= */
.site-foot {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 48px 0 24px;
}
.site-foot::before {
  background: linear-gradient(90deg, transparent, var(--footer-border), transparent);
}

.foot-grid {
  grid-template-columns: minmax(320px, 1.3fr) minmax(220px, .8fr) minmax(420px, 1.2fr) minmax(220px, .7fr);
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--footer-rule);
}

.foot-brand .foot-name { color: var(--footer-title); }
.foot-brand .foot-desc {
  color: var(--footer-muted);
  min-height: 48px;
  line-height: 1.65;
  max-width: 44ch;
}

.foot-col h6 { color: var(--contact-accent); margin: 0 0 14px; }
.foot-col a, .foot-col span { color: var(--footer-text); }
.foot-col a:hover { color: var(--contact-accent); }
.foot-col .muted { color: var(--footer-muted); }
.foot-col .pending { color: var(--footer-muted); }
.foot-col .pending::before { background: var(--contact-accent); }

/* Sitemap을 2열 그리드로 */
.foot-col--sitemap ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(90px, 1fr));
  gap: 10px 22px;
}

/* Location 칼럼 최소폭 확보 */
.foot-col--location {
  min-height: 96px;
}
.foot-col--location ul li .muted {
  display: block;
  line-height: 1.55;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.foot-bottom {
  padding-top: 20px;
  color: var(--footer-muted);
}

@media (max-width: 1100px) {
  .foot-grid {
    grid-template-columns: minmax(280px, 1fr) minmax(180px, .7fr) minmax(360px, 1.1fr) minmax(200px, .6fr);
    gap: 28px;
  }
}
@media (max-width: 980px) {
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .foot-brand { grid-column: 1 / -1; }
  .foot-col--location { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .foot-grid { grid-template-columns: 1fr; }
  .foot-col--sitemap ul { grid-template-columns: 1fr 1fr; }
}