.header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-h);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}

.header.is-open {
  z-index: 30;
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 42px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;

}

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.icon-btn.burger {
  display: none;
  flex-shrink: 0;
}

.mobile-nav {
  display: none;
}

@media (max-width: 860px) {
  .header-inner {
    gap: 12px;
  }

  .logo-img {
    height: 34px;
  }

  .nav {
    display: none !important;
  }

  .icon-btn.burger {
    display: inline-flex !important;
  }

  .mobile-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    padding: 16px 20px 20px;
    flex-direction: column;
    gap: 14px;
  }

  .mobile-nav.is-open {
    display: flex;
  }

  .mobile-nav a {
    font-size: 16px;
    font-weight: 600;
    padding: 8px 0;
  }
}