/* =============================================
   nav.css — Navbar Styles
   ============================================= */

#navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 0.5px solid var(--border);
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow 0.3s ease;
}

#navbar.scrolled {
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo */
.nav-logo {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent2);
  letter-spacing: 0.04em;
  transition: opacity var(--transition);
}
.nav-logo:hover {
  opacity: 0.75;
}

/* Links */
.nav-links {
  list-style: none;
  display: flex;
  gap: 2.2rem;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.03em;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 0.5px;
  background: var(--accent2);
  transition: width var(--transition);
}
.nav-links a:hover {
  color: var(--text);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
  color: var(--text);
}

/* Hamburger toggle (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 600px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.97);
    border-bottom: 0.5px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }

  .nav-links.open {
    max-height: 300px;
    padding: 1rem 0;
  }

  .nav-links li {
    padding: 0.7rem 2rem;
  }

  .nav-links a {
    font-size: 14px;
  }
}