/* Professional Dashboard Styling (Inter font) */
:root{
  --bg:#f4f7fb;
  --accent:#2575fc;
  --muted:#6b7280;
  --card:#ffffff;
  --glass:rgba(255,255,255,0.65);
  --success:#16a34a;
  --danger:#ef4444;
  --surface: #f9fbff;
}

/* Base */
*{box-sizing:border-box}
body{
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial;
  margin:0;background:var(--bg);color:#0b1220;
}

/* Layout */
.app{display:flex;min-height:100vh}
.sidebar{
  width:220px;background:linear-gradient(180deg,var(--accent),#6a11cb);
  color:white;display:flex;flex-direction:column;padding:22px;
}
.brand{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.logo{font-size:26px}
.title{font-weight:700;font-size:18px}
.nav{display:flex;flex-direction:column;gap:12px}
.nav-link{display:flex;align-items:center;gap:10px;padding:10px;border-radius:8px;color:#fff;text-decoration:none;cursor:pointer;font-weight:600;opacity:0.95}
.nav-link i{width:18px}
.nav-link:hover{background: rgba(255,255,255,0.08)}
.nav-link.active{background: rgba(255,255,255,0.12)}
.spacer{flex:1}
.sidebar-footer{font-size:12px;opacity:0.85;text-align:center}

/* Main area */
.main{flex:1;display:flex;flex-direction:column}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;background:linear-gradient(90deg,#ffffff00,#ffffff00);border-bottom:1px solid rgba(11,18,32,0.05)}
.search{position:relative;max-width:520px;width:100%}
.search input{width:100%;padding:10px 38px 10px 14px;border-radius:10px;border:1px solid rgba(11,18,32,0.06);background:white}
.search i{position:absolute;right:12px;top:9px;color:var(--muted)}
.top-actions{display:flex;gap:10px}

/* Content area */
.content{padding:22px;display:grid;grid-auto-rows:min-content;gap:18px}
.section{display:none}
.section.active-section{display:block}

/* Dashboard cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-bottom:18px}
.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:0 6px 18px rgba(11,18,32,0.06)}
.stat .stat-head{display:flex;justify-content:space-between;align-items:center}
.stat-value{font-size:22px;font-weight:700;margin-top:6px}
.stat-sub{display:flex;gap:12px;margin-top:8px}
.green{color:var(--success);font-weight:700}.red{color:var(--danger);font-weight:700}

/* charts */
.charts-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:6px}
.chart-card{padding:12px}

/* Panels and table */
.panel{display:grid;grid-template-columns:380px 1fr;gap:18px}
.form-card input,.form-card select{width:100%;padding:10px;margin:8px 0;border-radius:8px;border:1px solid rgba(11,18,32,0.06)}
.row{display:flex;gap:10px}
.row > *{flex:1}
.form-card .btn{margin-top:6px}
.table-card .table-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.table-wrap{overflow:auto;max-height:520px}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{text-align:left;padding:10px;border-bottom:1px solid rgba(11,18,32,0.06)}
tbody td{padding:10px;border-bottom:1px solid rgba(11,18,32,0.04)}
.text-right{text-align:right}
.action-btn{background:transparent;border:none;color:var(--muted);cursor:pointer;padding:6px;border-radius:6px}
.action-btn:hover{background:rgba(11,18,32,0.04)}

/* large chart */
.large-chart{height:420px;display:flex;flex-direction:column}
.large-chart canvas{flex:1}

/* AI Card */
.ai-card{display:flex;flex-direction:column;gap:12px}
#aiBox{background:linear-gradient(180deg,#fff,#fbfdff);padding:14px;border-radius:8px;min-height:120px;overflow:auto}
.ai-actions{display:flex;gap:10px}

/* Buttons */
.btn{background:linear-gradient(90deg,var(--accent),#6a11cb);color:white;padding:10px 12px;border-radius:10px;border:none;cursor:pointer;font-weight:600}
.btn:hover{filter:brightness(.98)}
.btn-ghost{background:transparent;border:1px solid rgba(11,18,32,0.06);padding:8px 10px;border-radius:8px;color:var(--muted);cursor:pointer}

/* responsive */
@media(max-width:980px){
  .panel{grid-template-columns:1fr}
  .charts-grid{grid-template-columns:1fr}
  .sidebar{display:none}
  .search input{width:100%}
  .topbar{padding:12px}
}