/* Липкое меню навигации */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ki-accent, #2c3e50);
  box-shadow: 0 2px 8px rgba(44, 62, 80, 0.25);
}
.site-nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
}

/* Прокручиваемая полоса ссылок */
.site-nav-scroll {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.site-nav-scroll::-webkit-scrollbar { display: none; }

@media (min-width: 860px) {
  .site-nav-scroll { justify-content: center; }
}

.site-nav-brand {
  flex-shrink: 0;
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.7rem 0.5rem;
  margin-right: 0.25rem;
  white-space: nowrap;
}
.site-nav-brand span { color: #7ec8f7; }
.site-nav a.nav-link {
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.88);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.7rem 0.6rem;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.site-nav a.nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.site-nav a.nav-link.active {
  color: #fff;
  border-bottom-color: var(--ki-new, #3498db);
}

/* Выпадающие группы пунктов */
.nav-drop { position: relative; flex-shrink: 0; }
.nav-drop-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: rgba(255, 255, 255, 0.88);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.7rem 0.6rem;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.nav-drop-btn:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-drop.has-active > .nav-drop-btn,
.nav-drop:has(.nav-link.active) > .nav-drop-btn {
  color: #fff;
  border-bottom-color: var(--ki-new, #3498db);
}
.nav-arrow { font-size: 0.7rem; line-height: 1; transition: transform 0.2s; }
.nav-drop.open .nav-arrow { transform: rotate(180deg); }

/* Панель — плавающая карточка (позицию задаёт js/nav.js) */
.nav-panel {
  display: none;
  position: fixed;
  min-width: 215px;
  max-width: calc(100vw - 16px);
  background: var(--ki-accent, #2c3e50);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(44, 62, 80, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.06);
  padding: 0.35rem 0.3rem 0.45rem;
  z-index: 120;
}
.nav-drop.open .nav-panel { display: block; }
.nav-panel .nav-link {
  display: block;
  border-bottom: none;
  border-radius: 4px;
}

@media (max-width: 640px) {
  .site-nav-inner { padding: 0 0.5rem; }
  .site-nav-scroll { flex: 1; }
  .site-nav-brand { display: none; }
  .site-nav a.nav-link { padding: 0.6rem 0.45rem; font-size: 0.82rem; }
  .nav-drop-btn { padding: 0.6rem 0.45rem; font-size: 0.82rem; }
  .nav-panel { min-width: 200px; }
}