* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: #f1f5f9; color: #0f172a; }

.app { display: flex; height: 100vh; overflow: hidden; }

/* ── Sidebar fija ── */
.sidebar {
  width: 240px; background: #0f172a; color: #e2e8f0;
  display: flex; flex-direction: column; flex-shrink: 0;
  height: 100vh; position: sticky; top: 0;
}
.sidebar-logo { padding: 22px 18px; font-size: 18px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-logo span { color: #60a5fa; }
.nav { padding: 12px 8px; }
.nav-item {
  width: 100%; text-align: left; padding: 11px 14px; margin-bottom: 4px;
  background: transparent; border: none; color: #cbd5e1; border-radius: 8px;
  cursor: pointer; font-size: 14px; display: flex; align-items: center; gap: 10px;
}
.nav-item:hover { background: rgba(255,255,255,0.06); }
.nav-item.active { background: #2563eb; color: #fff; font-weight: 600; }

.main { flex: 1; padding: 24px 28px; overflow-y: auto; height: 100vh; }
.page-title { font-size: 24px; font-weight: 700; margin-bottom: 18px; color: #0f172a; }

/* ── Filtros ── */
.filters { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 20px; }
.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group label { font-size: 11px; font-weight: 700; color: #64748b; text-transform: uppercase; letter-spacing: .3px; }
.filter-group select {
  padding: 8px 12px; border: 1px solid #cbd5e1; border-radius: 8px; font-size: 14px;
  background: #fff; min-width: 130px; cursor: pointer;
}

/* ── KPIs ── */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.kpi { background: #fff; border: 1px solid #e2e8f0; border-radius: 14px; padding: 16px; }
.kpi .ico { font-size: 22px; margin-bottom: 6px; }
.kpi .label { font-size: 13px; font-weight: 600; color: #475569; }
.kpi .value { font-size: 26px; font-weight: 800; color: #0f172a; margin: 4px 0; }
.kpi .sub { font-size: 11px; color: #94a3b8; }

/* tarjeta compuesta (varios sub-kpis) */
.kpi-multi { background: #fff; border: 1px solid #e2e8f0; border-radius: 14px; padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04); }
.kpi-row { display: flex; align-items: center; gap: 12px; padding: 9px 0; }
.kpi-row + .kpi-row { border-top: 1px solid #f1f5f9; }
.kpi-row .ico { font-size: 24px; width: 34px; text-align: center; flex-shrink: 0; }
.kpi-row .txt { line-height: 1.25; }
.kpi-row .txt .label { font-size: 12px; font-weight: 600; color: #64748b; }
.kpi-row .txt .value { font-size: 21px; font-weight: 800; color: #0f172a; }

/* ── Tablas ── */
.table-wrap { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th { background: #1e3a5f; color: #f1f5f9; padding: 10px 12px; font-size: 12px; font-weight: 700; text-align: center; white-space: nowrap; }
td { padding: 9px 12px; font-size: 13px; border-bottom: 1px solid #f1f5f9; text-align: center; }
tr:last-child td { border-bottom: none; }
.total-row td { background: #eff6ff; font-weight: 700; }
.col-name { text-align: left !important; }

/* ── Loader / error ── */
.loader-wrap { display: flex; flex-direction: column; align-items: center; padding: 50px; color: #64748b; }
.spinner { width: 36px; height: 36px; border: 4px solid #e2e8f0; border-top-color: #2563eb; border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text { margin-top: 12px; font-size: 14px; }
.error-box { background: #fee2e2; color: #991b1b; padding: 14px 18px; border-radius: 10px; font-size: 14px; }

.card { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 16px; }
.card-title { font-size: 14px; font-weight: 700; color: #1e293b; margin-bottom: 12px; }

/* Matriz "Detalle por Curso": líneas verticales suaves entre columnas (solo cuerpo) */
.matriz-grid tbody td { border-right: 1px solid #eef2f7; }
.matriz-grid tbody td:last-child { border-right: none; }