/* ============================================
   АМИСТ — Header & Navigation
   ============================================ */

/* ── Top Bar (phone, social) ─────────────── */

.topbar {
  background-color: var(--color-primary-800);
  color: var(--color-primary-200);
  font-size: var(--text-xs);
  padding: var(--space-2) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-white);
  font-weight: var(--font-medium);
  transition: color var(--transition-fast);
  letter-spacing: var(--tracking-wide);
}

.topbar__phone:hover {
  color: var(--color-gold-300);
}

.topbar__phone-icon {
  width: 14px;
  height: 14px;
}

.topbar__address {
  color: var(--color-primary-300);
}

.topbar__social {
  display: flex;
  gap: var(--space-3);
}

.topbar__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  color: var(--color-primary-300);
  transition: all var(--transition-fast);
}

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

.topbar__social-link svg {
  width: 16px;
  height: 16px;
}

/* ── Main Header ─────────────────────────── */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.header--scrolled {
  box-shadow: var(--shadow-lg);
}

/* Transparent header for hero pages */
.header--transparent {
  position: absolute;
  width: 100%;
  background-color: transparent;
  box-shadow: none;
}

.header--transparent.header--scrolled {
  position: sticky;
  background-color: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.header--transparent:not(.header--scrolled) .nav__link {
  color: var(--color-white);
}

.header--transparent:not(.header--scrolled) .header__logo-text {
  color: var(--color-white);
}

.header--transparent:not(.header--scrolled) .header__phone {
  color: var(--color-white);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

@media (min-width: 1024px) {
  .header__inner {
    height: 80px;
  }
}

/* ── Logo ────────────────────────────────── */

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.header__logo-img {
  height: 40px;
  width: auto;
}

@media (min-width: 1024px) {
  .header__logo-img {
    height: 48px;
  }
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-700);
  letter-spacing: var(--tracking-wide);
  line-height: 1;
  transition: color var(--transition-fast);
}

.header__logo-tagline {
  font-family: var(--font-body);
  font-size: 9px;
  font-weight: var(--font-normal);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  display: block;
  margin-top: 2px;
}

/* ── Navigation ──────────────────────────── */

.nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-light);
}

.nav__link--active {
  color: var(--color-accent);
}

.nav__chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.nav__item:hover .nav__chevron {
  transform: rotate(180deg);
}

/* ── Dropdown ────────────────────────────── */

.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  padding: var(--space-2);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border-light);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: all var(--transition-fast);
  pointer-events: none;
}

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

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

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

.dropdown__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.5;
}

.dropdown__separator {
  height: 1px;
  background: var(--color-border-light);
  margin: var(--space-2) var(--space-3);
}

/* ── Header Right ────────────────────────── */

.header__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header__phone {
  display: none;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary-700);
  transition: color var(--transition-fast);
}

.header__phone:hover {
  color: var(--color-accent);
}

@media (min-width: 1280px) {
  .header__phone {
    display: flex;
  }
}

.header__phone-icon {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

.header__cta {
  display: none;
}

@media (min-width: 1024px) {
  .header__cta {
    display: inline-flex;
  }
}

/* ── Burger Menu Button ──────────────────── */

.burger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-header) + 10);
}

@media (min-width: 1024px) {
  .burger {
    display: none;
  }
}

.burger__lines {
  position: relative;
  width: 24px;
  height: 18px;
}

.burger__line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary-700);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.header--transparent:not(.header--scrolled) .burger__line {
  background-color: var(--color-white);
}

.burger__line:nth-child(1) { top: 0; }
.burger__line:nth-child(2) { top: 50%; transform: translateY(-50%); }
.burger__line:nth-child(3) { bottom: 0; }

/* Active state */
.burger--active .burger__line:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.burger--active .burger__line:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.burger--active .burger__line:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.burger--active .burger__line {
  background-color: var(--color-white);
}

/* ── Mobile Menu ─────────────────────────── */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-header);
  visibility: hidden;
  transition: visibility 0s linear 0.3s;
}

.mobile-menu--open {
  visibility: visible;
  transition-delay: 0s;
}

/* Overlay (left gap for closing) */
.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0);
  transition: background-color var(--transition-base);
}

.mobile-menu--open .mobile-menu__overlay {
  background-color: rgba(0, 0, 0, 0.5);
}

/* Panel (slides from right, with gap on left) */
.mobile-menu__panel {
  position: absolute;
  top: 8px;
  right: 8px;
  bottom: 8px;
  width: calc(100% - 76px);
  max-width: 340px;
  background-color: rgba(11, 29, 58, 0.97);
  backdrop-filter: blur(24px) saturate(1.6);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  padding-top: var(--space-6);
  overflow-y: auto;
  transform: translateX(110%);
  transition: transform var(--transition-base);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.3);
  border-radius: 20px;
}

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

.mobile-menu__inner {
  padding: var(--space-4) var(--space-4);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-white);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu__link:hover,
.mobile-menu__link--active {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.mobile-menu__submenu {
  display: none;
  padding-left: var(--space-4);
}

.mobile-menu__submenu--open {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu__sublink {
  padding: 6px var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-white);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

.mobile-menu__divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: var(--space-2) 0;
}

.mobile-menu__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--color-white);
}

.mobile-menu__cta {
  margin-top: var(--space-3);
  padding: 0 var(--space-4);
}

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

.mobile-menu__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-fast);
}

.mobile-menu__social-link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

/* ── Reduced motion ─────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}