:root{
  --bg:#f6f8fb; --card:#fff; --primary:#5568fe; --text:#032e39;
  --muted:#6b7280; --border:#e5e7eb; --danger:#ef4444; --ok:#10b981;
}
*{box-sizing:border-box} html,body{margin:0;height:100%;font-family:Inter,system-ui,Segoe UI,Arial}
body{background:var(--bg);color:var(--text)}

.app{display:flex;min-height:100vh}
.sidebar{
  width:260px;background:#0f172a;color:#e5e7eb;display:flex;flex-direction:column
}
.brand{padding:16px 18px;font-weight:800;letter-spacing:.2px;background:#111827}
.brand span{color:var(--primary)}
.sidebar a{
  padding:12px 18px;display:block;color:#e5e7eb;text-decoration:none;border-left:3px solid transparent
}
.sidebar a:hover{background:#111827}
.sidebar a.active{border-left-color:var(--primary);background:#0b1222}

.main{flex:1;display:flex;flex-direction:column}
.navbar{
  height:56px;background:var(--card);display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid var(--border)
}
.container{padding:16px}
.card{background:var(--card);border:1px solid var(--border);padding:16px}
h1,h2{margin:0 0 12px}
.muted{color:var(--muted)}
.hidden{display:none}

.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid var(--border);padding:10px 8px;text-align:left}
.table th{color:#334155;font-size:14px}
.table td{font-size:14px}

.btn{background:var(--primary);color:#fff;border:none;padding:8px 12px;border-radius:4px;cursor:pointer}
.btn.small{padding:6px 10px;font-size:12px}
.btn.danger{background:var(--danger)}
.btn.ghost{background:transparent;color:var(--primary);border:1px solid var(--primary)}

.input{width:100%;padding:10px;border:1px solid var(--border);border-radius:4px}
.row{display:flex;gap:12px;align-items:center}
.grid{display:grid;gap:16px}
.grid.two{grid-template-columns:1fr 1fr}
.grid.three{grid-template-columns:repeat(3,1fr)}

.toast{position:fixed;bottom:16px;right:16px;background:var(--card);border:1px solid var(--border);
  padding:10px 14px;border-radius:6px;opacity:0;transform:translateY(8px);transition:.25s}
.toast.show{opacity:1;transform:translateY(0)}
.toast.ok{border-color:var(--ok)}
.toast.error{border-color:var(--danger)}
.spacer{flex:1}