:root{
  --bg: #0f172a;
  --panel: #111827;
  --card: #0b1220;
  --border: rgba(255,255,255,.08);
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #fb923c;
  --accent2: #22c55e;
}

*{ box-sizing: border-box; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, #0b1020 0%, #070b14 100%);
  color: var(--text);
}

.app{ min-height: 100vh; }

.topbar{
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(17,24,39,.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.topbar-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
}

.brand{ display:flex; align-items:center; gap:12px; }
.brand-logo{
  width: 38px; height: 38px;
  border-radius: 12px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(251,146,60,.12);
  border: 1px solid rgba(251,146,60,.25);
}
.brand-title{ font-weight: 700; letter-spacing: .2px; }
.brand-subtitle{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.topbar-actions{ display:flex; gap:10px; }
.btn{
  display:inline-flex;
  align-items:center;
  padding: 9px 12px;
  border-radius: 12px;
  background: rgba(251,146,60,.15);
  border: 1px solid rgba(251,146,60,.35);
  color: var(--text);
  text-decoration:none;
  font-weight: 600;
  font-size: 14px;
}
.btn:hover{ filter: brightness(1.1); }
.btn-outline{
  background: transparent;
  border: 1px solid var(--border);
}

.body{
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 64px);
}

.menu{
  border-right: 1px solid var(--border);
  background: rgba(17,24,39,.35);
  padding: 14px;
}

.menu-title{
  font-size: 12px;
  color: var(--muted);
  margin: 10px 10px 8px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.menu-section{ margin-bottom: 14px; }
.menu-item{
  display:block;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text);
  text-decoration:none;
  border: 1px solid transparent;
}
.menu-item:hover{
  background: rgba(255,255,255,.04);
  border-color: var(--border);
}
.menu-item.is-active{
  background: rgba(34,197,94,.10);
  border-color: rgba(34,197,94,.25);
}

.content{
  padding: 18px 18px 40px;
}

h1{ margin: 8px 0 16px; font-size: 24px; }
h2{ margin: 0 0 10px; font-size: 18px; }

.cards{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}
.card{
  background: rgba(15,23,42,.55);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.card-title{ color: var(--muted); font-size: 13px; }
.card-value{ font-size: 28px; font-weight: 800; margin-top: 6px; }
.card-hint{ color: var(--muted); font-size: 12px; margin-top: 6px; }

.panel{
  background: rgba(15,23,42,.35);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
}

@media (max-width: 980px){
  .body{ grid-template-columns: 1fr; }
  .menu{ display:none; }
  .cards{ grid-template-columns: 1fr; }
}