.topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 4rem;
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(106, 164, 58, 0.15);
  box-shadow: 0 10px 40px rgba(23, 76, 45, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.3s ease;
}

.topbar-main {
  display: flex;
  align-items: center;
}

#mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--green-dark);
  cursor: pointer;
  padding: 0.5rem;
}

#mobile-menu-btn svg {
  width: 32px;
  height: 32px;
}

.topbar-collapsible {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
}

.identity {
  display: flex;
  align-items: center;
  min-width: 300px;
  padding: 0;
  background: transparent;
  border: 0;
}

.brand-image {
  width: 330px;
  height: 68px;
  object-fit: contain;
}

nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  color: var(--green-dark);
  font-size: 0.95rem;
  font-weight: 700;
}

nav a {
  position: relative;
  padding: 0.6rem 1.2rem;
  text-align: center;
  border-radius: 50px;
  color: var(--muted);
  transition: all 300ms ease;
}

nav a:hover,
nav a.active {
  color: var(--green-dark);
  background: rgba(106, 164, 58, 0.1);
  transform: translateY(-2px);
}

.phone-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1.1rem;
  color: var(--white);
  background: var(--green-dark);
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 8px 24px rgba(23, 76, 45, 0.18);
  transition: transform 200ms ease, background 200ms ease, box-shadow 200ms ease;
  white-space: nowrap;
}

.phone-link:hover {
  background: var(--leaf);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(23, 76, 45, 0.25);
}

@media (max-width: 1050px) {
  .topbar {
    padding-left: 2rem;
    padding-right: 2rem;
  }
  .identity {
    min-width: 200px;
  }
  .brand-image {
    width: 260px;
  }
}

@media (max-width: 850px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
    padding: 0;
  }

  .topbar-main {
    justify-content: space-between;
    padding: 1rem 1.5rem;
  }

  #mobile-menu-btn {
    display: block;
  }

  .identity {
    min-width: 0;
  }

  .brand-image {
    width: auto;
    max-width: min(72vw, 280px);
    max-height: 52px;
  }

  .topbar-collapsible {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 1.5rem;
    margin: 0;
    padding: 1rem 1.5rem 1.5rem;
    background: rgba(255, 255, 255, 0.98);
    border-top: 1px solid var(--line);
  }

  .topbar-collapsible.active {
    display: flex;
  }

  nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  nav a {
    text-align: left;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
  }
  
  nav a:hover,
  nav a.active {
    background: rgba(106, 164, 58, 0.08);
    transform: translateX(4px);
  }

  .phone-link {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .topbar-main {
    padding: 0.85rem 1rem;
  }

  .brand-image {
    max-width: min(70vw, 230px);
    max-height: 44px;
  }

  #mobile-menu-btn {
    padding: 0.35rem;
  }

  #mobile-menu-btn svg {
    width: 28px;
    height: 28px;
  }

  .topbar-collapsible {
    gap: 1rem;
    padding: 0.85rem 1rem 1.1rem;
  }

  nav a {
    padding: 0.9rem 1rem;
    font-size: 0.95rem;
  }

  .phone-link {
    min-height: 48px;
    padding: 0.75rem 1rem;
    font-size: 0.92rem;
  }
}