.topbar{
  position:fixed;top:0;left:0;right:0;
  height:72px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;
  background: rgba(7,10,18,.62);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.12);
  z-index:9999;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo{width:28px;height:28px;filter: drop-shadow(0 6px 16px rgba(0,0,0,.35))}
.brand-text{font-weight:900;letter-spacing:.3px}

.topbar-nav{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.nav-btn{
  padding:10px 12px;
  border-radius:14px;
  text-decoration:none;
  color: rgba(255,255,255,.86);
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  transition: transform .12s ease, background .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.nav-btn:hover{
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.24);
  background: rgba(255,255,255,.10);
  box-shadow: 0 10px 26px rgba(0,0,0,.28);
  color:#fff;
}
.nav-btn.active{
  border-color: rgba(255, 208, 0, .55);
  background: rgba(255, 208, 0, .14);
  box-shadow: 0 10px 26px rgba(0,0,0,.28), 0 0 0 1px rgba(255,208,0,.18) inset;
  color:#fff;
}

.topbar-right{display:flex;align-items:center;gap:10px}
.login-btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 12px;border-radius:14px;
  text-decoration:none;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.92);
  transition: background .12s ease, border-color .12s ease, transform .12s ease;
}
.login-btn:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.24);
}

.clock-badge{
  font-size:13px;
  font-weight:800;
  letter-spacing:.2px;
  padding:9px 12px;
  border-radius:14px;
  background: rgba(0,0,0,.35);
  border:1px solid rgba(255,255,255,.12);
  box-shadow: 0 10px 26px rgba(0,0,0,.22);
  color: rgba(255,255,255,.92);
}

@media (max-width: 860px){
  .topbar{height:auto;padding:12px 14px;gap:10px;flex-direction:column;align-items:stretch}
  .topbar-nav{justify-content:flex-start}
  .topbar-right{justify-content:space-between}
}

/* Premium: subtle topbar sheen */
.topbar::before{
  content:"";
  position:absolute;
  inset:0;
  background: linear-gradient(90deg, rgba(255,208,0,.06), transparent 35%, rgba(110,160,255,.06));
  opacity:.65;
  pointer-events:none;
}
.topbar{ position:fixed; }
.topbar > *{ position:relative; z-index:1; }

.clock-badge{
  border-color: rgba(255,208,0,.26);
  background: rgba(0,0,0,.38);
  box-shadow: 0 12px 34px rgba(0,0,0,.30), 0 0 0 1px rgba(255,208,0,.10) inset;
}