:root {
  --bg: #0b0f14;
  --card: #101720;
  --muted: #8a95a7;
  --text: #e6edf5;
  --accent: #4cc9f0;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #1f2a37;
  --shadow: 0 1px 2px rgba(0,0,0,0.25), 0 2px 8px rgba(0,0,0,0.2);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

.app-header, .app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: #0f1621;
}

.app-footer {
  border-top: 1px solid var(--border);
  border-bottom: none;
  justify-content: center;
}

.controls { display: flex; align-items: center; gap: 12px; }

.btn {
  background: var(--accent);
  color: #002133;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.05); }

.muted { color: var(--muted); font-size: 0.9rem; }

.container { padding: 20px; max-width: 1100px; margin: 0 auto; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.card {
  grid-column: span 12;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  box-shadow: var(--shadow);
}

@media (min-width: 800px) {
  #tiposSection { grid-column: span 12; }
  #tasasSection { grid-column: span 6; }
  #activosSection { grid-column: span 6; }
}

.card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
}
.card-header h2 { margin: 0; }

.card-content.is-loading .skeleton-row {
  height: 16px;
  background: linear-gradient(90deg, rgba(255,255,255,0.06), rgba(255,255,255,0.13), rgba(255,255,255,0.06));
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite;
  border-radius: 6px;
  margin: 8px 0;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.kv {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 10px 16px;
}

.kv .k { color: var(--muted); }
.kv .v { font-weight: 600; }

.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.8rem;
  border: 1px solid var(--border);
  color: var(--muted);
}

.bad { color: var(--danger); }
.good { color: var(--success); }
.warn { color: var(--warning); }

.error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  padding: 10px;
  border-radius: 8px;
}

/* Cotización: tarjetas como la imagen */
.quotes-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.quote-card {
  grid-column: span 12;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0f1621;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

@media (min-width: 860px) {
  .quote-card { grid-column: span 6; }
}

.quote-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.quote-title { font-weight: 700; color: #cfe8ff; }
.quote-updated { color: var(--muted); font-size: 0.85rem; }

.quote-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.quote-value {
  display: flex;
  flex-direction: column;
}

.quote-amount { font-size: 1.25rem; font-weight: 700; }
.quote-label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: .03em; }

.quote-ref .quote-values { grid-template-columns: 1fr; }

/* Tasas/Activos */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  row-gap: 10px;
  column-gap: 16px;
}

.stat-label { color: var(--muted); }
.stat-value { font-weight: 800; text-align: right; }
.stat-updated { color: var(--muted); font-size: 0.85rem; display: block; margin-bottom: 8px; }