/* ============ Navigation ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
}
.nav__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 40px 80px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__pill {
  display: flex;
  align-items: center;
  gap: 56px;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-pill);
  padding: 10px 28px 10px 12px;
  transition: box-shadow 0.2s ease;
}
.nav--scrolled .nav__pill {
  box-shadow: var(--shadow-popover);
}
.nav__logo-lockup {
  display: flex;
  align-items: center;
}
.nav__logo-box {
  position: relative;
  display: block;
  width: 116.813px;
  height: 23.773px;
  flex-shrink: 0;
}
.nav__logo-box img {
  position: absolute;
  left: 0;
  top: -4.48px;
  width: 100%;
  height: calc(100% + 8.62px);
  display: block;
}
.nav__items {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}
.nav__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
  font-family: var(--font-label-en);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}
.nav__item-spacer {
  height: 1px;
  width: 100%;
  background: transparent;
  flex-shrink: 0;
}
.nav__item-underline {
  height: 2px;
  width: 20px;
  background: var(--color-accent-primary);
  flex-shrink: 0;
}
.nav__item:hover,
.nav__item:focus-visible {
  color: var(--color-text-primary);
}
.nav__item[aria-current="page"] {
  color: var(--color-text-primary);
}
.nav__cta {
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(255, 81, 17, 0.35);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-pill);
  font-family: var(--font-kr);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.2;
  padding: 17px 32px;
  border: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-accent-primary);
  color: var(--color-text-on-accent);
}
.btn--primary:hover { background: var(--color-accent-primary-hover); }
.btn--primary:active { background: var(--color-accent-primary-active); }
.btn--primary:disabled {
  background: var(--color-text-secondary);
  color: var(--color-bg-base);
  opacity: 0.5;
  cursor: not-allowed;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
}
.btn--secondary:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}
.btn--secondary:active {
  background: var(--color-bg-raised);
}

.icon-btn {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  flex-shrink: 0;
  transition: background-color 0.15s ease;
}
.icon-btn--on-accent {
  background: var(--color-text-on-accent);
  color: var(--color-accent-primary);
}
.icon-btn--outline {
  background: transparent;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-primary);
}
@media (hover: hover) and (pointer: fine) {
  .icon-btn--outline:hover {
    background: var(--color-accent-primary);
    color: var(--color-text-on-accent);
    border-color: var(--color-accent-primary);
  }
}

/* ============ Tag / Pill ============ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-label-en);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.06em;
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

/* ============ Nav: Mobile hamburger + overlay menu ============ */
.nav__mobile-actions {
  display: none;
  align-items: center;
  gap: 10px;
}
.nav__mobile-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-primary);
  color: var(--color-text-on-accent);
  font-family: var(--font-kr);
  font-weight: 500;
  font-size: 13px;
  white-space: nowrap;
}
.nav__hamburger {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-default);
  border-radius: 50%;
  flex-shrink: 0;
}
.nav__hamburger span {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--color-text-primary);
}

.nav-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-bg-base);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
}
.nav-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0s;
}
.nav-menu__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
}
.nav-menu__close {
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  color: var(--color-text-primary);
  font-size: 20px;
}
.nav-menu__items {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 40px 20px;
}
.nav-menu__item {
  font-family: var(--font-label-en);
  font-weight: 600;
  font-size: 26px;
  color: var(--color-text-primary);
}
.nav-menu__item--active {
  color: var(--color-accent-primary);
}
.nav-menu__cta {
  margin: auto 20px 32px;
  text-align: center;
  justify-content: center;
}

/* ============ Nav: Responsive ============ */
@media (max-width: 1024px) {
  .nav__inner { padding: 24px; }
}
@media (max-width: 640px) {
  .nav__inner { padding: 16px 20px; }
  .nav__pill { display: none; }
  .nav__cta { display: none; }
  .nav__mobile-actions { display: flex; }
}
@media (min-width: 641px) {
  .nav-menu { display: none; }
}