.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 48px;
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  flex-direction: column;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.5px;
  line-height: 1.2;
  color: var(--text);
}

.menu-container {
  position: relative;
}

.controls {
  display: flex;
  align-items: center;
  gap: 24px;
}

.menu-wrapper {
  position: relative;
}

.moon-icon {
  display: none;
}

[data-theme="dark"] .sun-icon {
  display: none;
}

[data-theme="dark"] .moon-icon {
  display: block;
}

.menu-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: 1px solid var(--text);
  border-radius: 30px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  transition: all 0.3s ease;
  position: relative;
  z-index: 10;
}

.theme-inline {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 4px;
}

.theme-inline svg {
  width: 20px;
  height: 20px;
}

.sep {
  color: var(--muted-text);
  font-weight: 300;
  font-size: 18px;
}

.menu-btn:hover {
  background-color: var(--muted-bg);
}

.icon-group {
  position: relative;
  width: 18px;
  height: 18px;
}

.icon-group svg {
  position: absolute;
  inset: 0;
  width: 18px;
  height: 18px;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.icon-close {
  opacity: 0;
  transform: rotate(-90deg);
}

.menu-btn.open .icon-hamburger {
  opacity: 0;
  transform: rotate(90deg);
}

.menu-btn.open .icon-close {
  opacity: 1;
  transform: rotate(0deg);
}

.dropdown-menu {
  position: absolute;
  top: -0.35rem;
  left: 50%;
  min-width: calc(100% + 16px);
  transform: translateX(-50%) scale(0.95) translateY(-10px);
  transform-origin: top center;
  background-color: var(--dropdown-bg);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 4.2rem 1.2rem 1.4rem;
  box-shadow: 0 16px 40px rgba(0,0,0,0.12);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 5;
}

.dropdown-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) scale(1) translateY(0);
}

.dropdown-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dropdown-menu li a {
  display: block;
  color: var(--text);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 12px;
  text-align: center;
  transition: all 0.25s ease;
}

.dropdown-menu li a:hover {
  background-color: var(--muted-bg);
  transform: scale(1.02);
}

.dropdown-menu li a:active {
  transform: scale(0.98);
}

.dropdown-menu li a.active {
  background-color: var(--muted-bg);
  font-weight: 700;
}

@media (max-width: 768px) {
  .navbar {
    padding: 16px 20px;
  }

  .brand {
    font-size: 14px;
  }

  .menu-btn {
    padding: 10px 20px;
    font-size: 13px;
    gap: 8px;
  }

  .theme-inline svg {
    width: 16px;
    height: 16px;
  }

  .sep {
    font-size: 15px;
  }

  .dropdown-menu {
    padding: 3.5rem 1rem 1.2rem;
    min-width: calc(100% + 12px);
  }

  .dropdown-menu li a {
    font-size: 15px;
    padding: 8px 12px;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 12px 16px;
  }

  .menu-btn {
    padding: 8px 16px;
    font-size: 12px;
    gap: 6px;
  }

  .menu-btn .icon-group {
    display: none;
  }

  .theme-inline svg {
    width: 14px;
    height: 14px;
  }

  .sep {
    font-size: 13px;
  }

  .dropdown-menu {
    padding: 3rem 0.8rem 1rem;
    min-width: 100%;
    border-radius: 24px;
  }

  .dropdown-menu ul {
    gap: 4px;
  }

  .dropdown-menu li a {
    font-size: 14px;
    padding: 8px 10px;
  }
}