/* ===== header.css — Стили шапки ===== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(10px);
  transition: box-shadow var(--transition-speed);
}

.header--scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  flex-shrink: 0;
}

.logo__icon {
  font-size: 1.75rem;
  transition: transform var(--transition-speed);
}

.logo:hover .logo__icon {
  transform: scale(1.2) rotate(-10deg);
}

.logo:hover {
  color: var(--color-primary-dark);
}

.nav__list {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav__link {
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding-bottom: 4px;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-speed);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

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

.header__phone {
  font-weight: 500;
  color: var(--color-accent);
  white-space: nowrap;
  flex-shrink: 0;
}

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

/* --- Burger menu --- */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 110;
}

.burger__line {
  display: block;
  width: 28px;
  height: 3px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Анимация бургера → крестик */
.burger--active .burger__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.burger--active .burger__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Плавное появление навигации на мобильных */
.nav {
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* Нет адаптива в этом файле — он в adaptive.css */