/* ==========================================================================
   Kwest LLC — Shared components: buttons, cards, header/nav, footer
   ========================================================================== */

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-navy);
  color: var(--color-white);
}

@media (hover: hover) {
  .btn-primary:hover {
    background-color: var(--color-navy-dark);
  }
}

.btn-gold {
  background-color: var(--color-gold);
  color: var(--color-navy);
}

.btn-gold:hover {
  background-color: var(--color-gold-dark);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.btn-outline:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.btn-outline-light {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--color-white);
}

.btn-outline-light:hover {
  background-color: var(--color-white);
  color: var(--color-navy);
  border-color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-navy);
}

.btn-ghost:hover {
  background-color: var(--color-bg-light-2);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-7);
  font-size: var(--fs-md);
}

@media (max-width: 768px) {
  .btn {
    width: 100%;
  }
}

/* ---------------------------------------------------------------------
   Cards
   --------------------------------------------------------------------- */

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base), transform var(--transition-base),
    border-color var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-border);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-navy);
}

.card__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.card__body {
  font-size: var(--fs-base);
  color: var(--color-text-body);
}

.card--accent {
  border-top: 3px solid var(--color-gold);
}

.card--navy {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
}

.card--navy .card__title {
  color: var(--color-white);
}

.card--navy .card__body {
  color: var(--color-text-hero-subtext);
}

/* ---------------------------------------------------------------------
   Section header (reusable across pages: centered eyebrow-less title +
   subtitle pattern, e.g. homepage tracks/mission sections)
   --------------------------------------------------------------------- */

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-header__title {
  font-size: var(--fs-section-header);
  font-weight: var(--fw-section-header);
  color: var(--color-navy);
  line-height: 1.15;
  text-wrap: balance;
}

.section-header__subtitle {
  font-size: var(--fs-section-subtext);
  font-weight: var(--fw-section-subtext);
  color: var(--color-text-body);
  margin-top: 16px;
  text-wrap: balance;
}

@media (max-width: 768px) {
  .section-header {
    margin-bottom: 32px;
  }

  .section-header__subtitle {
    margin-top: 8px;
  }
}

/* ---------------------------------------------------------------------
   Notice / compliance callout (reused on about.html, services.html)
   --------------------------------------------------------------------- */

.notice {
  max-width: 960px;
  margin: 40px auto 0;
  padding: 20px 24px;
  border-left: 3px solid var(--color-gold);
  background-color: var(--color-bg-light);
  border-radius: 4px;
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.notice + .notice {
  margin-top: 16px;
}

.notice a {
  color: var(--color-navy);
  font-weight: var(--fw-semibold);
}

.notice a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .notice {
    margin-top: 24px;
    padding: 16px 18px;
  }
}

/* ---------------------------------------------------------------------
   Badge (reused on services.html, partners.html)
   --------------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
}

.badge--muted {
  color: var(--color-text-tertiary);
  border-style: dashed;
  background-color: transparent;
}

@media (max-width: 768px) {
  .badge {
    padding: 6px 14px;
  }
}

/* ---------------------------------------------------------------------
   Wide banner image (reused below page-header heroes: about.html,
   partners.html, conventions-*.html, info-us-market-entry.html)
   --------------------------------------------------------------------- */

.wide-image-section {
  line-height: 0;
}

.wide-image {
  display: block;
  width: 100%;
  height: 420px;
  object-fit: cover;
}

@media (max-width: 768px) {
  .wide-image {
    height: 220px;
  }
}

/* ---------------------------------------------------------------------
   Header / Navigation
   --------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 0.5px solid var(--color-border);
  padding: 24px 48px;
}

.site-header .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo: icon + wordmark, gap must stay tight and never grow */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--logo-gap);
  flex-shrink: 0;
}

.logo__icon {
  width: var(--logo-icon-size);
  height: var(--logo-icon-size);
  flex-shrink: 0;
  display: block;
}

.logo__wordmark {
  font-family: var(--font-logo);
  font-weight: var(--fw-bold);
  font-size: var(--fs-logo-wordmark);
  color: var(--color-navy);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.logo--inverse .logo__wordmark {
  color: var(--color-white);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.main-nav__link {
  font-size: 15px;
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  padding-block: var(--space-2);
  position: relative;
}

.main-nav__link[aria-current="page"] {
  color: var(--color-navy);
}

@media (hover: hover) {
  .main-nav__link:hover {
    color: var(--color-navy);
  }
}

.main-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background-color: var(--color-gold);
}

/* Dropdown: desktop hover reveal, e.g. "Information" submenu */
.has-dropdown {
  position: relative;
}

.has-dropdown > .main-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.has-dropdown > .main-nav__link .dropdown-chevron {
  font-size: 12px;
  transition: transform var(--transition-fast);
}

.dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 200px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), transform var(--transition-fast),
    visibility var(--transition-fast);
  z-index: 10;
}

.has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* :hover-triggered reveal is scoped to real pointer devices only. On
   touchscreens (including iOS Safari), any :hover-dependent style on an
   ancestor makes the browser treat the first tap on a descendant link as
   "enter hover" and only the second tap as the actual click — gating it
   behind (hover: hover) keeps mobile taps working in one tap, since mobile
   already opens/closes via the JS .is-open class instead. */
@media (hover: hover) {
  .has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .has-dropdown:hover > .main-nav__link .dropdown-chevron {
    transform: rotate(180deg);
  }

  .dropdown__link:hover {
    background-color: var(--color-bg-light);
    color: var(--color-navy);
  }
}

.dropdown__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* Vertical divider between nav links and language toggle */
.nav-divider {
  width: 1px;
  height: 18px;
  background-color: var(--color-border);
  flex-shrink: 0;
}

/* Language toggle: plain "EN / 한국어" text switch */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 14px;
  font-weight: var(--fw-medium);
}

.lang-toggle__option {
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

@media (hover: hover) {
  .lang-toggle__option:hover {
    color: var(--color-navy);
  }
}

.lang-toggle__option[aria-pressed="true"],
.lang-toggle__option[aria-current="page"] {
  color: var(--color-navy);
  font-weight: var(--fw-bold);
}

.lang-toggle__sep {
  color: var(--color-text-tertiary);
}

/* Get started CTA in nav */
.nav-cta {
  padding: 12px 22px;
  font-size: 14px;
  font-weight: var(--fw-bold);
  border-radius: 6px;
}

/* Mobile nav toggle (hamburger) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  font-size: 26px;
  color: var(--color-navy);
  line-height: 1;
}

@media (max-width: 768px) {
  .site-header {
    padding: 16px 20px;
  }

  .logo__icon {
    width: var(--logo-icon-size-mobile);
    height: var(--logo-icon-size-mobile);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: 60px;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-6) var(--space-5);
    gap: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .main-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    width: 100%;
  }

  .main-nav__link {
    display: block;
    width: 100%;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .has-dropdown > .main-nav__link {
    width: 100%;
    justify-content: space-between;
  }

  .dropdown {
    position: static;
    display: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    left: auto;
    top: auto;
    min-width: 0;
    box-shadow: none;
    border: none;
    padding: 0 0 0 var(--space-4);
    width: 100%;
  }

  /* Touch taps on iOS Safari can leave :hover/:focus-within "stuck" active on
     the parent, which would otherwise let the desktop absolute-positioning
     rule's transform/left bleed through and shove this off-screen. Pin the
     mobile values explicitly so that can't happen. */
  .has-dropdown:hover .dropdown,
  .has-dropdown:focus-within .dropdown {
    position: static;
    transform: none;
    left: auto;
    top: auto;
  }

  .has-dropdown.is-open .dropdown {
    display: block;
  }

  .has-dropdown.is-open > .main-nav__link .dropdown-chevron {
    transform: rotate(180deg);
  }

  .dropdown__link {
    white-space: normal;
    border-bottom: 1px solid var(--color-border);
  }

  .dropdown__link:last-child {
    border-bottom: none;
  }

  .nav-divider {
    display: none;
  }

  .lang-toggle {
    font-size: 15px;
  }

  .nav-cta {
    width: 100%;
  }
}

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */

.site-footer {
  background-color: var(--color-white);
  border-top: 0.5px solid var(--color-border);
  padding: 32px 48px;
}

.site-footer .footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-small);
  color: var(--color-text-tertiary);
}

.site-footer a {
  color: var(--color-text-tertiary);
}

.site-footer a:hover {
  color: var(--color-navy);
}

@media (max-width: 768px) {
  .site-footer {
    padding: 24px 20px;
  }

  .site-footer .footer-inner {
    flex-direction: column;
    justify-content: center;
    text-align: center;
    gap: var(--space-2);
  }
}