/* VisionSoft — shared components (header, footer, buttons, placeholders) */

/* ——— Buttons ——— */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default),
    border-color var(--duration-fast) var(--ease-default);
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-navy-900);
  color: var(--color-text-on-navy);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-navy-800);
  color: var(--color-text-on-navy);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-navy-900);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background-color: var(--color-bg-muted);
  border-color: var(--color-navy-700);
}

.btn--on-dark {
  background-color: var(--color-text-on-navy);
  color: var(--color-navy-900);
}

.btn--on-dark:hover,
.btn--on-dark:focus-visible {
  background-color: var(--color-bg-muted);
  color: var(--color-navy-950);
}

.btn--ghost-on-dark {
  background: transparent;
  color: var(--color-text-on-navy);
  border-color: rgba(245, 247, 250, 0.35);
}

.btn--ghost-on-dark:hover,
.btn--ghost-on-dark:focus-visible {
  background-color: rgba(245, 247, 250, 0.08);
  border-color: rgba(245, 247, 250, 0.55);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ——— Status label ——— */

.status {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  line-height: 1.4;
  color: var(--color-status-text);
  background-color: var(--color-status-bg);
  border-radius: var(--radius-sm);
}

/* ——— Placeholder media ——— */

.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 12rem;
  padding: var(--space-5);
  text-align: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  background-color: var(--color-bg-muted);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
}

.placeholder--hero {
  min-height: 14rem;
  background-color: var(--color-navy-800);
  border-color: var(--color-navy-700);
  color: var(--color-text-on-navy-muted);
}

@media (min-width: 48rem) {
  .placeholder--hero {
    min-height: 18rem;
  }
}

/* ——— Site header ——— */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: var(--space-4);
}

.site-logo {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: var(--color-navy-900);
}

.site-logo:hover {
  text-decoration: none;
  color: var(--color-navy-800);
}

.site-logo__en {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.site-logo__ko {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-navy-900);
}

.nav-toggle__bars {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
  box-shadow: 0 -6px 0 currentColor, 0 6px 0 currentColor;
}

@media (min-width: 48rem) {
  .nav-toggle {
    display: none;
  }
}

.site-nav {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-5) var(--space-5);
}

.site-nav.is-open {
  display: block;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.site-nav__link {
  display: block;
  padding: var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--color-navy-900);
  background-color: var(--color-bg-muted);
  text-decoration: none;
}

.site-nav__link[aria-current="page"] {
  color: var(--color-navy-900);
  font-weight: var(--weight-semibold);
  background-color: var(--color-bg-muted);
}

@media (min-width: 48rem) {
  .site-header__inner {
    position: relative;
  }

  .site-nav {
    display: block;
    position: static;
    border: 0;
    padding: 0;
    background: transparent;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-1);
  }

  .site-nav__link {
    padding: var(--space-2) var(--space-3);
  }
}

/* ——— Site footer ——— */

.site-footer {
  background-color: var(--color-navy-950);
  color: var(--color-text-on-navy-muted);
  padding-block: var(--space-8);
}

.site-footer a {
  color: var(--color-text-on-navy);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer__grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 48rem) {
  .site-footer__grid {
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: var(--space-7);
  }
}

.site-footer__brand {
  color: var(--color-text-on-navy);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-2);
}

.site-footer__tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 22rem;
}

.site-footer__heading {
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-on-navy);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.site-footer__contact {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.site-footer__contact dt {
  font-weight: var(--weight-semibold);
  color: var(--color-text-on-navy);
  margin-top: var(--space-3);
}

.site-footer__contact dt:first-child {
  margin-top: 0;
}

.site-footer__contact dd {
  margin: var(--space-1) 0 0;
}

.site-footer__bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(184, 196, 212, 0.25);
  font-size: var(--text-xs);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
}

.site-footer__partner {
  font-size: var(--text-xs);
  opacity: 0.9;
}

/* ——— Lightbox overlay ——— */

body.is-lightbox-open {
  overflow: hidden;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  background-color: rgba(11, 28, 51, 0.88);
  cursor: zoom-out;
}

.lightbox[hidden] {
  display: none;
}

.lightbox__image {
  max-width: min(96vw, 72rem);
  max-height: 90vh;
  width: auto;
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  cursor: default;
  background-color: var(--color-bg-elevated);
}

.lightbox__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 2.75rem;
  height: 2.75rem;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--color-text-on-navy);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.lightbox__close:hover,
.lightbox__close:focus-visible {
  background-color: rgba(245, 247, 250, 0.12);
}