:root{
  --bg:#0b1020;
  --panel:#11182b;
  --panel-2:#151f35;
  --text:#ecf2ff;
  --muted:#8ea0be;
  --line:#24304a;
  --blue:#4f8cff;
  --green:#2dd4bf;
  --red:#fb7185;
  --orange:#f59e0b;
  --shadow:0 20px 45px rgba(0,0,0,.25);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;
  background:radial-gradient(circle at top left,#182541 0,#0b1020 38%,#070b16 100%);
  color:var(--text);
}
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:280px;
  padding:24px;background:rgba(10,15,28,.82);
  border-right:1px solid var(--line);backdrop-filter:blur(16px);
  display:flex;flex-direction:column;gap:28px;
}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{
  width:46px;height:46px;border-radius:16px;
  display:grid;place-items:center;font-weight:900;
  background:linear-gradient(135deg,var(--blue),var(--green));
  box-shadow:0 10px 25px rgba(79,140,255,.35)
}
.brand h1{margin:0;font-size:23px;letter-spacing:.3px}
.brand span,.eyebrow{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.12em}
nav{display:flex;flex-direction:column;gap:7px}
nav a{
  color:var(--muted);text-decoration:none;padding:12px 14px;border-radius:14px;
  transition:.2s;border:1px solid transparent;
}
nav a:hover,nav a.active{
  color:#fff;background:rgba(79,140,255,.12);border-color:rgba(79,140,255,.25)
}
.sidebar-footer{
  margin-top:auto;padding:16px;border-radius:18px;background:var(--panel-2);
  border:1px solid var(--line)
}
.sidebar-footer strong{display:block;font-size:24px;margin-top:6px}
.main{margin-left:280px;padding:28px;max-width:1600px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.topbar h2{margin:4px 0 0;font-size:31px}
.top-actions{display:flex;gap:10px;align-items:center}
select,.btn{
  border:none;border-radius:14px;padding:11px 15px;color:#fff;background:var(--panel-2);
  border:1px solid var(--line);font-weight:700
}
.btn{cursor:pointer}
.btn.primary{background:linear-gradient(135deg,var(--blue),#7c3aed);border:none}
.btn.secondary{background:rgba(79,140,255,.14)}
.btn.small{padding:8px 12px;font-size:12px}
.grid{display:grid;gap:18px;margin-bottom:18px}
.kpi-grid{grid-template-columns:repeat(4,1fr)}
.two-columns{grid-template-columns:1.2fr .8fr}
.card{
  background:linear-gradient(180deg,rgba(21,31,53,.94),rgba(14,21,38,.94));
  border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow);
}
.kpi span{display:block;color:var(--muted);font-size:13px}
.kpi strong{display:block;font-size:30px;margin:8px 0}
.kpi small{color:var(--muted)}
.positive{color:var(--green)!important}
.danger strong{color:var(--red)}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.section-head h3{margin:4px 0 0;font-size:19px}
.badge{
  padding:6px 10px;border-radius:999px;font-size:12px;font-weight:800;
  background:rgba(45,212,191,.13);color:var(--green)
}
.badge.red{background:rgba(251,113,133,.12);color:var(--red)}
.chart-bars{
  height:255px;display:flex;align-items:end;gap:14px;padding-top:20px
}
.bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px}
.bar{
  width:100%;border-radius:14px 14px 5px 5px;
  background:linear-gradient(180deg,var(--blue),var(--green));
  min-height:18px;box-shadow:0 10px 22px rgba(79,140,255,.22)
}
.bar.negative{background:linear-gradient(180deg,var(--red),#ef4444)}
.bar-label{font-size:12px;color:var(--muted)}
.alert-list{display:flex;flex-direction:column;gap:12px}
.alert-row{
  display:flex;justify-content:space-between;gap:12px;padding:14px;border-radius:16px;
  background:rgba(255,255,255,.035);border:1px solid var(--line)
}
.alert-row span{color:var(--muted);font-size:13px;text-align:right}
.alert-row.red{border-color:rgba(251,113,133,.32)}
.alert-row.orange{border-color:rgba(245,158,11,.32)}
.alert-row.blue{border-color:rgba(79,140,255,.32)}
table{width:100%;border-collapse:collapse}
th,td{padding:13px 11px;border-bottom:1px solid var(--line);text-align:left}
th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em}
td{font-size:14px}
.status{
  display:inline-flex;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:800
}
.status.open{background:rgba(245,158,11,.13);color:var(--orange)}
.status.paid{background:rgba(45,212,191,.13);color:var(--green)}
.status.late{background:rgba(251,113,133,.13);color:var(--red)}
.status.forecast{background:rgba(79,140,255,.13);color:#8fb6ff}
@media(max-width:1100px){
  .sidebar{position:relative;width:auto}
  .main{margin-left:0}
  .kpi-grid,.two-columns{grid-template-columns:1fr}
  .topbar{flex-direction:column;align-items:flex-start;gap:14px}
}