nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  z-index: 100;
}

.logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
  color: var(--text);
  text-decoration: none;
}

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

nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
}

nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

nav a:hover,
nav a.active {
  color: var(--text);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 38px;
  height: 38px;
  cursor: pointer;
  padding: 9px 8px;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-dim);
  border-radius: 2px;
  transition: all 0.25s;
}

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

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

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

@media (max-width: 700px) {
  .hamburger {
    display: flex;
  }

  nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    z-index: 99;
  }

  nav ul.open {
    display: flex;
  }

  nav ul li a {
    display: block;
    padding: 12px 24px;
    font-size: 15px;
  }

  .logo {
    flex: 1;
  }

  nav {
    padding: 12px 16px;
  }
}

.theme-toggle {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-dim);
  transition: all 0.2s;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.theme-icon.sun {
  display: none;
}

.theme-icon.moon {
  display: block;
}

[data-theme="light"] .theme-icon.sun {
  display: block;
}

[data-theme="light"] .theme-icon.moon {
  display: none;
}

/* Light theme nav background tweak */
[data-theme="light"] nav {
  background: rgba(245, 245, 250, 0.9);
}