:root {
  --bg: #020617;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  background: var(--bg);
}
.brand { font-family: 'Bricolage Grotesque', sans-serif; font-weight: 800; letter-spacing: -0.02em; }
.font-mono, pre, input, select { font-family: 'JetBrains Mono', monospace; }

.app-bg {
  background:
    radial-gradient(circle at 15% 10%, rgba(34,211,238,0.08), transparent 40%),
    radial-gradient(circle at 85% 90%, rgba(52,211,153,0.07), transparent 45%),
    #020617;
}

.auth-bg {
  background:
    radial-gradient(circle at 20% 30%, rgba(34,211,238,0.18), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(139,92,246,0.16), transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(52,211,153,0.12), transparent 50%),
    #020617;
  position: relative;
  overflow: hidden;
}
.auth-bg::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(34,211,238,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridmove 18s linear infinite;
}
@keyframes gridmove { to { background-position: 40px 40px; } }

.glass {
  background: rgba(15,23,42,0.7);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(148,163,184,0.15);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  position: relative; z-index: 1;
}

.fade-up { animation: fadeUp 0.6s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

.float-logo { animation: float 3s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.card-hover { transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; }
.card-hover:hover { transform: translateY(-2px); border-color: rgba(34,211,238,0.4); box-shadow: 0 8px 30px rgba(34,211,238,0.08); }

.glow-btn { box-shadow: 0 0 20px rgba(34,211,238,0.25); }
.glow-btn:hover { box-shadow: 0 0 30px rgba(52,211,153,0.4); }

.optimal-glow { animation: pulseGlow 2.4s ease-in-out infinite; }
@keyframes pulseGlow {
  0%,100% { box-shadow: 0 0 0 rgba(52,211,153,0); }
  50% { box-shadow: 0 0 40px rgba(52,211,153,0.25); }
}
.optimal-glow::after {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(52,211,153,0.1), transparent 60%);
  animation: sweep 4s linear infinite; pointer-events: none;
}
@keyframes sweep { to { transform: rotate(360deg); } }

.nav-active {
  background: rgba(34,211,238,0.1);
  border-left: 3px solid #22d3ee;
  box-shadow: inset 0 0 20px rgba(34,211,238,0.08);
}

.qr-box {
  background-image:
    linear-gradient(45deg, #1e293b 25%, transparent 25%),
    linear-gradient(-45deg, #1e293b 25%, transparent 25%);
  background-size: 6px 6px;
}

.toast { animation: toastIn 0.3s ease; }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 20px); } to { opacity: 1; transform: translate(-50%, 0); } }

.ring circle:last-of-type { filter: drop-shadow(0 0 6px currentColor); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #0f172a; }
::-webkit-scrollbar-thumb { background: #334155; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #475569; }

input:focus, select:focus { outline: none; }