:root {
  --bg: #F4F6F9;
  --card-bg: #FFFFFF;
  --border: #E4E8EF;
  --text: #1B2430;
  --text-muted: #5B6472;
  --text-faint: #8992A0;
  --font-display: 'Segoe UI', 'Inter', system-ui, sans-serif;
  --font-body: 'Segoe UI', system-ui, sans-serif;

  --turquesa: #0FA3A3;
  --turquesa-bright: #14C4C4;
  --turquesa-bg: #E4FBFB;

  --ambar: #C98A1F;
  --ambar-bright: #F0A93A;
  --ambar-bg: #FDF2E2;

  --coral: #D5573B;
  --coral-bg: #FCEAE5;

  --lila: #7B5FBF;
  --lila-bg: #F1ECFA;

  --shadow: 0 1px 2px rgba(20, 30, 50, .04), 0 4px 14px rgba(20, 30, 50, .05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.mono { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* ---------------- Topbar ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 24px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--coral), var(--ambar-bright));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 12px; letter-spacing: .02em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text b { font-size: 15px; font-family: var(--font-display); }
.brand-text span { font-size: 12px; color: var(--text-muted); }

.filtro-fechas { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.filtro-fechas label { display: flex; flex-direction: column; font-size: 11px; color: var(--text-muted); gap: 2px; }
.filtro-fechas input[type="date"] {
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
  font-size: 13px; color: var(--text); background: #fff;
}
.filtro-fechas select {
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
  font-size: 13px; color: var(--text); background: #fff; max-width: 220px;
}
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--border); background: #fff; color: var(--text-muted);
  border-radius: 999px; padding: 6px 14px; font-size: 12.5px; font-weight: 600;
  cursor: pointer; transition: all .15s ease;
}
.chip:hover { border-color: var(--turquesa); color: var(--turquesa); }
.chip.active { background: var(--text); border-color: var(--text); color: #fff; }

/* ---------------- Banner "Consultando..." ---------------- */
.banner-cargando {
  position: sticky; top: 65px; z-index: 15;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--ambar-bg); color: #7A5313; border-bottom: 1px solid #F0DDB0;
  padding: 8px 16px; font-size: 12.5px; font-weight: 600; text-align: center;
}
.banner-cargando[hidden] { display: none; }

.spinner {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(0,0,0,.15); border-top-color: currentColor;
  animation: girar .7s linear infinite; flex-shrink: 0;
}
@keyframes girar { to { transform: rotate(360deg); } }

/* ---------------- Overlay de carga sobre gráficas ---------------- */
.chart-overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  gap: 8px; background: rgba(255,255,255,.85); color: var(--text-muted);
  font-size: 12.5px; font-weight: 600; border-radius: 10px;
  opacity: 0; pointer-events: none; transition: opacity .2s ease;
}
.chart-overlay.visible { opacity: 1; pointer-events: auto; }

/* ---------------- Estado "cargando" de las tarjetas KPI ---------------- */
.card.kpi .value.cargando {
  color: transparent; position: relative; border-radius: 6px; min-height: 1em;
  background: linear-gradient(90deg, #EEF1F6 25%, #E4E9F0 37%, #EEF1F6 63%);
  background-size: 400% 100%; animation: shimmer 1.4s ease infinite;
}

/* ---------------- Layout ---------------- */
.page { max-width: 1180px; margin: 0 auto; padding: 20px 24px 60px; }

.section-title {
  display: flex; align-items: baseline; gap: 12px; margin: 30px 0 12px;
}
.section-title h2 {
  font-family: var(--font-display); font-size: 15px; font-weight: 700; margin: 0;
  white-space: nowrap;
}
.section-title .line { flex: 1; height: 1px; background: var(--border); }

.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px 20px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 12px; font-family: var(--font-display); font-size: 13.5px; font-weight: 700; }

/* ---------------- KPI cards ---------------- */
.card.kpi { position: relative; overflow: hidden; }
.card.kpi::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
}
.card.kpi .label { font-size: 12px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
.card.kpi .value { font-size: 26px; font-weight: 800; margin-top: 6px; font-family: var(--font-display); }
.card.kpi .sub { font-size: 12px; color: var(--text-faint); margin-top: 2px; }

.card.kpi.turquesa::before { background: var(--turquesa-bright); }
.card.kpi.ambar::before { background: var(--ambar-bright); }
.card.kpi.coral::before { background: var(--coral); }
.card.kpi.lila::before { background: var(--lila); }

/* ---------------- Charts ---------------- */
.chart-wrap { position: relative; height: 260px; }
.chart-wrap.tall { height: 320px; }

/* ---------------- Tables ---------------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; font-size: 11.5px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .03em; padding: 8px 10px;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
th.num, td.num { text-align: right; }
tbody td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background: #FAFBFD; }
tbody tr.fila-factura { cursor: pointer; }

.btn-expandir {
  width: 22px; height: 22px; border-radius: 6px; border: 1px solid var(--border);
  background: #fff; color: var(--text-muted); font-size: 12px; line-height: 1;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: transform .15s ease;
}
.btn-expandir.abierto { transform: rotate(90deg); }

.fila-detalle td { background: #FAFBFD; padding: 0; }
.detalle-renglones { padding: 10px 14px 16px 46px; }
.detalle-renglones table { font-size: 12.5px; }
.detalle-renglones thead th { border-bottom: 1px solid var(--border); }

.tabla-toolbar { margin-bottom: 12px; }
.tabla-toolbar input[type="search"] {
  width: 100%; max-width: 360px; border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 12px; font-size: 13px;
}

.paginador { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 14px; }
.paginador span { color: var(--text-muted); font-size: 12.5px; }

/* ---------------- Buttons / misc ---------------- */
.btn {
  border-radius: 9px; padding: 8px 16px; font-size: 13px; font-weight: 700;
  cursor: pointer; border: 1px solid transparent; transition: all .15s ease;
}
.btn-ghost { background: #fff; border-color: var(--border); color: var(--text-muted); }
.btn-ghost:hover { border-color: var(--turquesa); color: var(--turquesa); }
.btn-ghost:disabled { opacity: .45; cursor: not-allowed; }

.skeleton {
  border-radius: 10px;
  background: linear-gradient(90deg, #EEF1F6 25%, #E4E9F0 37%, #EEF1F6 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
}
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: #fff; padding: 10px 18px; border-radius: 10px;
  font-size: 13px; opacity: 0; pointer-events: none; transition: all .25s ease;
  box-shadow: var(--shadow); z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--coral); }

.footer-note { margin-top: 40px; text-align: center; font-size: 12px; color: var(--text-faint); }

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .topbar { padding: 12px 16px; }
  .page { padding: 16px 16px 50px; }
  .filtro-fechas { width: 100%; justify-content: space-between; }
}