/* ==========================================================================
   nav.css — fixed top navigation bar
   ========================================================================== */

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}
.nav-logo .brand-mark {
  width: 26px;
  height: 26px;
}

.nav-download {
  background: #fff;
  color: #000;
  padding: 10px 28px;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}
.nav-download:hover {
  background: #e0e0e0;
  transform: translateY(-1px);
}