:root {
  --bg: #0a0e14;
  --bg-panel: #10161f;
  --border: #1e2836;
  --text: #e6edf3;
  --text-dim: #8b98a9;
  --accent: #5b8cff;
  --good: #3ecf8e;
  --warn: #ff9797;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}
header.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px; border-bottom: 1px solid var(--border); background: var(--bg-panel);
}
header.topbar a { color: var(--text); text-decoration: none; font-weight: 700; }
header.topbar .eyebrow { font-size: 11px; color: var(--accent); text-transform: uppercase; letter-spacing: .08em; }
header.topbar nav a { color: var(--text-dim); margin-left: 18px; font-weight: 500; font-size: 14px; }
header.topbar nav a:hover { color: var(--text); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; }

.buscador { display: flex; gap: 10px; margin-bottom: 24px; }
.buscador input {
  flex: 1; background: var(--bg-panel); border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); padding: 12px 16px; font-size: 14px;
}
.buscador input:focus { outline: none; border-color: var(--accent); }
.buscador .info { font-size: 12px; color: var(--text-dim); margin-top: 6px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.card {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 16px; display: flex; flex-direction: column; gap: 8px;
}
.card-img { width: 100%; height: 140px; object-fit: cover; border-radius: 10px; background: #0d1420; margin: -16px -16px 0; width: calc(100% + 32px); }
.card .categoria { font-size: 10px; color: var(--accent); text-transform: uppercase; letter-spacing: .05em; margin-top: 8px; }
.card .nombre { font-size: 15px; font-weight: 700; line-height: 1.3; }
.card .desc { font-size: 12px; color: var(--text-dim); line-height: 1.4; flex: 1; }
.card .precio { font-size: 18px; font-weight: 800; color: var(--good); }
.card .stock { font-size: 11px; color: var(--text-dim); }
.card .jaccard { font-size: 10px; color: var(--accent); font-family: monospace; }
.card button {
  background: var(--accent); color: #051022; border: none; font-weight: 700;
  padding: 10px; border-radius: 8px; cursor: pointer; font-size: 13px;
}
.card button:hover { filter: brightness(1.08); }
.card button:disabled { opacity: .5; cursor: default; }

.carrito-item {
  display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border);
}
.carrito-item-img { width: 52px; height: 52px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.carrito-item .nombre { flex: 1; font-weight: 600; }
.carrito-item .cantidad { color: var(--text-dim); font-size: 13px; }
.carrito-item .subtotal { font-weight: 700; color: var(--good); min-width: 90px; text-align: right; }
.carrito-item button {
  background: transparent; border: 1px solid var(--border); color: var(--warn);
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 12px;
}

.total-box {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 20px; font-weight: 800;
}
.total-box .num { color: var(--good); }

.btn-primario {
  background: var(--accent); color: #051022; border: none; font-weight: 700;
  padding: 14px 24px; border-radius: 10px; cursor: pointer; font-size: 15px; margin-top: 20px; width: 100%;
}
.btn-primario:hover { filter: brightness(1.08); }
.btn-primario:disabled { opacity: .5; cursor: default; }

form.checkout label { display: block; font-size: 12px; color: var(--text-dim); margin: 14px 0 4px; }
form.checkout input, form.checkout textarea {
  width: 100%; background: var(--bg-panel); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 10px 12px; font-size: 14px; font-family: inherit;
}
form.checkout input:focus, form.checkout textarea:focus { outline: none; border-color: var(--accent); }

.panel {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px;
}

.error-box { background: #2a1418; border: 1px solid #5a2530; color: var(--warn); border-radius: 10px; padding: 12px 16px; font-size: 13px; margin-top: 14px; display: none; }
.error-box.activo { display: block; }

.confirmacion { text-align: center; padding: 40px 20px; }
.confirmacion .icono { font-size: 48px; margin-bottom: 12px; }
.confirmacion .numero { font-size: 26px; font-weight: 800; color: var(--good); margin-bottom: 8px; }
.confirmacion table { width: 100%; margin-top: 24px; border-collapse: collapse; text-align: left; }
.confirmacion th, .confirmacion td { padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 13px; }

.vacio { text-align: center; padding: 60px 20px; color: var(--text-dim); }

.motor-nota {
  font-size: 12px; color: var(--text-dim); background: var(--bg-panel);
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin-bottom: 20px; line-height: 1.5;
}
.motor-nota b { color: var(--text); }
.motor-nota code { background: #0d1420; padding: 1px 6px; border-radius: 4px; font-family: monospace; }

/* Panel en vivo de backend.html */
.badge-conexion { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: var(--bg-panel); border: 1px solid var(--border); color: var(--text-dim); }
.badge-ok { background: rgba(62,207,142,.14); color: var(--good); border-color: rgba(62,207,142,.3); padding: 2px 8px; border-radius: 6px; font-size: 11px; font-weight: 700; }
.badge-error { background: rgba(255,151,151,.14); color: var(--warn); border: 1px solid rgba(255,151,151,.3); padding: 2px 8px; border-radius: 6px; font-size: 11px; font-weight: 700; }

.transaccion { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; margin-bottom: 12px; }
.tx-cab { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.tx-op { font-weight: 700; font-size: 14px; }
.tx-tiempo { margin-left: auto; font-size: 11px; color: var(--text-dim); font-family: monospace; }
.tx-franjas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 900px) { .tx-franjas { grid-template-columns: 1fr; } }
.tx-franja { background: #0d1420; border: 1px solid var(--border); border-radius: 8px; padding: 10px; overflow: hidden; }
.tx-franja-titulo { font-size: 10px; color: var(--accent); text-transform: uppercase; letter-spacing: .05em; font-weight: 700; margin-bottom: 6px; }
.tx-franja pre { margin: 0; font-size: 11px; color: var(--text-dim); white-space: pre-wrap; word-break: break-word; max-height: 180px; overflow-y: auto; }