/* ===================================
   Я ТВОРЮ МИР — Navigation Styles
   =================================== */

/* === MAIN NAVIGATION === */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--nav-height);
  transition: all var(--transition-base);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-6);
  max-width: var(--container-2xl);
  margin: 0 auto;
}

/* Transparent state */
.site-nav--transparent {
  background: transparent;
}

/* Scrolled state */
.site-nav--scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  border-bottom: var(--border-light);
}

/* === LOGO === */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.nav-logo__image {
  height: 44px;
  width: auto;
  transition: transform var(--transition-base);
}

.nav-logo:hover .nav-logo__image {
  transform: scale(1.04);
}

.nav-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo__title {
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  color: var(--color-dark);
  transition: color var(--transition-fast);
}

.site-nav--transparent .nav-logo__title {
  color: var(--color-white);
}

.site-nav--scrolled .nav-logo__title {
  color: var(--color-dark);
}

.nav-logo__subtitle {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.site-nav--transparent .nav-logo__subtitle {
  color: rgba(255,255,255,0.55);
}

/* === NAV MENU === */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.site-nav--transparent .nav-link {
  color: rgba(255,255,255,0.85);
}

.site-nav--transparent .nav-link:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

.site-nav--scrolled .nav-link {
  color: var(--color-gray-700);
}

.site-nav--scrolled .nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-ultra-light);
}

.nav-link--active {
  color: var(--color-accent) !important;
}

.site-nav--scrolled .nav-link--active {
  background: var(--color-primary-ultra-light);
}

.nav-link__icon {
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link__icon {
  transform: rotate(180deg);
}

/* === DROPDOWN === */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: var(--border-light);
  padding: var(--space-2);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-white);
  border: var(--border-light);
  border-right: none;
  border-bottom: none;
  transform: translateX(-50%) rotate(45deg);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-dropdown__link:hover {
  background: var(--color-primary-ultra-light);
  color: var(--color-primary);
}

.nav-dropdown__link-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-cream);
  font-size: var(--text-base);
  flex-shrink: 0;
}

.nav-dropdown__sep {
  height: 1px;
  background: var(--color-gray-100);
  margin: var(--space-2) var(--space-4);
}

/* === NAV CTA === */
.nav-cta {
  margin-left: var(--space-4);
}

.nav-cta .btn {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
}

/* === MOBILE TOGGLE === */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 6px;
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.site-nav--scrolled .nav-toggle:hover {
  background: var(--color-cream);
}

.nav-toggle__line {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-white);
  transition: all var(--transition-base);
  transform-origin: center;
}

.site-nav--scrolled .nav-toggle__line {
  background: var(--color-gray-700);
}

.nav-toggle.is-open .nav-toggle__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.is-open .nav-toggle__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* === MOBILE MENU === */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-sticky) - 1);
  background: var(--color-dark);
  display: flex;
  flex-direction: column;
  padding: calc(var(--nav-height) + var(--space-6)) var(--space-6) var(--space-8);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
}

.mobile-menu.is-open {
  transform: translateX(0);
}

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

.mobile-menu__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  font-size: var(--text-lg);
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.mobile-menu__link:hover,
.mobile-menu__link--active {
  color: var(--color-white);
  background: rgba(255,255,255,0.08);
}

.mobile-menu__link-icon {
  font-size: var(--text-xl);
}

.mobile-menu__cta {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-menu__footer {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.mobile-menu__footer-link {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
  transition: color var(--transition-fast);
}

.mobile-menu__footer-link:hover {
  color: rgba(255,255,255,0.7);
}

/* === BODY LOCK === */
body.nav-open {
  overflow: hidden;
}

/* === RESPONSIVE === */
@media (max-width: 1100px) {
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
}

@media (max-width: 768px) {
  .site-nav__inner {
    padding: 0 var(--space-4);
  }

  .nav-logo__text {
    display: none;
  }
}