:root {
  --bg: #0b1220;
  --panel: #131c2e;
  --panel-2: #1b2840;
  --line: rgba(255,255,255,0.08);
  --text: #ecf2ff;
  --muted: #97a4bf;
  --accent: #5ea3ff;
  --positive: #ffd34f;
  --negative: #ff6b6b;
  --zero: #2ecc71;
}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top right, rgba(94,163,255,0.12), transparent 28%), var(--bg);
  color: var(--text);
}
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 280px; background: rgba(19,28,46,0.9); border-right: 1px solid var(--line); padding: 24px 18px; position: sticky; top: 0; height: 100vh;
}
.main-content { flex: 1; padding: 28px; }
.brand { display:flex; gap:14px; align-items:center; }
.brand-mark {
  width: 48px; height:48px; border-radius:14px; display:grid; place-items:center; background: linear-gradient(135deg, var(--accent), #8ac2ff); color:#08111f; font-weight: 800;
}
.nav-link {
  color: var(--text); border-radius: 12px; padding: 12px 14px; background: transparent;
}
.nav-link:hover, .nav-link.active { background: rgba(94,163,255,0.12); color: #fff; }
.nav-link i { margin-right: 10px; }
.topbar, .card-premium, .kpi-card, .login-card {
  background: rgba(19,28,46,0.84); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 18px 40px rgba(0,0,0,0.25);
}
.topbar { padding: 18px 22px; }
.page-title { font-size: 1.65rem; }
.user-chip { background: rgba(255,255,255,0.03); border:1px solid var(--line); border-radius:14px; padding:10px 14px; text-align:right; }
.card-premium { padding: 22px; }
.kpi-grid { display:grid; gap:16px; grid-template-columns: repeat(auto-fit, minmax(210px,1fr)); }
.kpi-card { padding: 18px; }
.kpi-label { color: var(--muted); font-size: 0.9rem; }
.kpi-value { font-size: 1.8rem; font-weight: 800; }
.table { --bs-table-bg: transparent; --bs-table-color: var(--text); --bs-table-border-color: var(--line); }
.form-control, .form-select {
  background: rgba(255,255,255,0.03); border: 1px solid var(--line); color: var(--text);
}
.form-control:focus, .form-select:focus { background: rgba(255,255,255,0.05); color: var(--text); border-color: var(--accent); box-shadow: 0 0 0 0.2rem rgba(94,163,255,0.15); }
.btn-primary { background: linear-gradient(135deg, #4d94ff, #78b4ff); border:none; color:#08111f; font-weight:700; }
.btn-outline-light { border-color: var(--line); color: var(--text); }
.badge-status-negative { background: rgba(255,107,107,0.2); color: #ff9a9a; }
.badge-status-positive { background: rgba(255,211,79,0.2); color: #ffe083; }
.badge-status-zero { background: rgba(46,204,113,0.2); color: #81f0ae; }
.row-negative { background: rgba(255,107,107,0.08); }
.row-positive { background: rgba(255,211,79,0.08); }
.row-zero { background: rgba(46,204,113,0.08); }
.login-page { min-height:100vh; display:grid; place-items:center; padding:40px; }
.login-card { width:min(480px, 94vw); padding: 28px; }
.small-muted { color: var(--muted); }
.section-title { font-size:1.05rem; font-weight:700; margin-bottom: 14px; }
.field-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap:16px; }
.footer-note { color: var(--muted); font-size:0.85rem; }