/* ===== HEADER / NAV ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--primary);
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
  transition: background var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-img {
  height: 78px;
  width: auto;
  filter: invert(1);
  mix-blend-mode: screen;
  transition: opacity 0.3s ease;
}
.logo:hover .logo-img { opacity: 0.85; }

.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 0.5px;
}

.logo-text span {
  color: var(--accent);
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 14px;
  color: rgba(255,255,255,0.88);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

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

.nav-link .arrow {
  width: 12px;
  height: 12px;
  transition: transform var(--transition);
  fill: currentColor;
}

.nav-item:hover > .nav-link .arrow {
  transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition);
  border: 1px solid var(--mid-gray);
  overflow: hidden;
  padding-top: 8px;
}

/* invisible bridge — mouse can travel from nav to dropdown without gap */
.dropdown::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.nav-item:hover > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 11px 18px;
  color: var(--text-dark);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition);
  border-left: 3px solid transparent;
}

.dropdown-link:hover {
  background: var(--light-bg);
  color: var(--primary);
  border-left-color: var(--accent);
  padding-left: 22px;
}

/* Header right: language switcher + mobile toggle */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-right-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.header-phone {
  color: rgba(255,255,255,0.85);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}
.header-phone:hover {
  color: white;
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 3px;
}

.lang-btn {
  padding: 4px 10px;
  border-radius: 16px;
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.7);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.lang-btn.active {
  background: var(--accent);
  color: var(--white);
}

.lang-btn:hover:not(.active) {
  color: var(--white);
  background: rgba(255,255,255,0.15);
}

/* Mobile hamburger */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.open span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 900px) {
  .mobile-toggle { display: flex; }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }

  .nav.open {
    max-height: 100vh;
    overflow-y: auto;
  }

  .nav-link {
    padding: 12px 24px;
    border-radius: 0;
    font-size: 0.95rem;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.05);
    border: none;
    border-radius: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-item.open > .dropdown {
    max-height: 400px;
  }

  .dropdown-link {
    color: rgba(255,255,255,0.75);
    padding: 10px 36px;
    border-left: none;
  }

  .dropdown-link:hover {
    background: rgba(255,255,255,0.08);
    color: var(--white);
    padding-left: 40px;
    border-left: none;
  }

  .nav-link .arrow {
    margin-left: auto;
  }
}