/* ========== NAV (full-width -> centered pill on scroll) ========== */
.nav {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: 100%;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  box-shadow: none;
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              top 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              border-radius 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav.scrolled {
  top: 10px;
  width: min(800px, calc(100% - 80px));
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 99px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 56px;
  padding: 0 24px;
  max-width: 1140px;
  margin: 0 auto;
  transition: height 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              padding 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav.scrolled .nav-inner { height: 64px; padding: 0 24px; }
.nav-logo { display: flex; align-items: center; flex-shrink: 0; }
.nav-logo img { height: 26px; transition: height 0.3s; }
.nav.scrolled .nav-logo img { height: 22px; }
.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-links { display: flex; gap: 20px; list-style: none; align-items: center; }
.nav-links a {
  text-decoration: none;
  color: var(--text-light);
  font-size: 0.82rem;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--dark); }

/* Mobile */
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-toggle svg { width: 20px; height: 20px; stroke: var(--dark); }
.mobile-menu { display: none; background: var(--white); border-bottom: 1px solid var(--border); padding: 12px 24px; }
.mobile-menu.open { display: flex; flex-direction: column; gap: 8px; }
.mobile-menu a { color: var(--text); text-decoration: none; font-size: 0.9rem; font-weight: 500; padding: 8px 0; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
}