/* ============ NAVBAR ============ */
.navbar{
  position: fixed;
  top: 0; left: 0; width: 100%;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-left{
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.nav-logo{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.01em;
  transition: color 0.35s ease;
}
.nav-logo span{ color: var(--accent); transition: color 0.35s ease; }

.nav-links{
  display: flex;
  gap: 2.25rem;
  list-style: none;
  margin: 0; padding: 0;
}

.nav-links a{
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-links a:hover{ color: var(--ink); border-color: var(--accent); }

.hamburger{
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span{
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.hamburger.active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2){ opacity: 0; }
.hamburger.active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 760px){
  .hamburger{ display: flex; }
  .nav-links{
    position: fixed;
    top: 68px; left: 0;
    width: 100%;
    height: calc(100vh - 68px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.25rem;
    background: var(--paper);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  .nav-links.active{ transform: translateX(0); }
  .nav-links a{ font-size: 1.3rem; }
}