*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: #0f172a;
  background: #f1f5f9;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  display: none;
  width: 14rem;
  flex-direction: column;
  background: #0f172a;
  color: #fff;
  padding: 1rem;
}

.sidebar-tag {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #38bdf8;
}

.sidebar-title {
  margin: 0.25rem 0 0;
  font-size: 1.125rem;
  font-weight: 700;
}

.sidebar-subtitle {
  margin: 0;
  font-size: 0.75rem;
  color: #64748b;
}

.nav {
  margin-top: 2rem;
  display: grid;
  gap: 0.25rem;
}

.nav a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.875rem;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.05);
}

.nav a.active {
  background: rgba(14, 165, 233, 0.2);
  color: #7dd3fc;
}

.back-link {
  margin-top: auto;
  font-size: 0.75rem;
  color: #64748b;
  text-decoration: none;
}

.back-link:hover {
  color: #fff;
}

.main {
  display: flex;
  flex: 1;
  flex-direction: column;
}

.header {
  border-bottom: 1px solid #e2e8f0;
  background: #fff;
  padding: 0.75rem 1rem;
}

.header h1 {
  margin: 0;
  font-size: 1.125rem;
}

.header p {
  margin: 0;
  font-size: 0.75rem;
  color: #64748b;
}

.content {
  flex: 1;
  padding: 1rem;
}

.kpi-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
}

.kpi-card,
.panel {
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  background: #fff;
  padding: 1rem;
}

.kpi-label {
  margin: 0;
  font-size: 0.75rem;
  color: #64748b;
}

.kpi-value {
  margin: 0.25rem 0 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: #0369a1;
}

.chart {
  margin-top: 1rem;
  display: flex;
  height: 8rem;
  align-items: flex-end;
  gap: 0.5rem;
}

.bar {
  flex: 1;
  border-radius: 0.25rem 0.25rem 0 0;
  background: rgba(14, 165, 233, 0.7);
}

.split {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.placeholder {
  min-height: 12rem;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, #bae6fd, #7dd3fc);
}

.stack {
  display: grid;
  gap: 1.5rem;
}

.list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.list li {
  margin-top: 0.5rem;
  border: 1px solid #f1f5f9;
  border-radius: 0.375rem;
  padding: 0.75rem 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th,
td {
  padding: 0.75rem 1rem;
  text-align: left;
}

thead {
  background: #f8fafc;
  color: #64748b;
}

tbody tr {
  border-top: 1px solid #e2e8f0;
}

.muted {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: #64748b;
}

@media (min-width: 768px) {
  .sidebar {
    display: flex;
  }

  .header,
  .content {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .content {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
  }
}