/* ── Layout ─────────────────────────────────────────────── */
body { background: #f4f6f9; }

.navbar { box-shadow: 0 2px 6px rgba(0,0,0,.15); }

/* ── Tarjetas de producto (dashboard) ───────────────────── */
.card-producto {
  border: none;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  transition: transform .15s, box-shadow .15s;
}
.card-producto:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,.12);
}

.card-producto .stock-num {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
}

.card-producto.estado-ok     { border-left: 5px solid #198754; }
.card-producto.estado-bajo   { border-left: 5px solid #ffc107; }
.card-producto.estado-critico{ border-left: 5px solid #dc3545; }

/* ── KPI cards (resumen superior) ───────────────────────── */
.kpi-card {
  border-radius: 12px;
  color: #fff;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.kpi-card .kpi-num  { font-size: 2.5rem; font-weight: 700; }
.kpi-card .kpi-label{ font-size: .85rem; opacity: .85; }

.kpi-total   { background: linear-gradient(135deg,#0d6efd,#0a58ca); }
.kpi-bajo    { background: linear-gradient(135deg,#ffc107,#e0a800); color:#333 !important; }
.kpi-bajo .kpi-label { color:#555 !important; }
.kpi-critico { background: linear-gradient(135deg,#dc3545,#b02a37); }
.kpi-ok      { background: linear-gradient(135deg,#198754,#146c43); }

/* ── Tabla de historial ──────────────────────────────────── */
.table-sm td, .table-sm th { vertical-align: middle; }

/* ── Login page ─────────────────────────────────────────── */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
}
.login-card {
  width: 100%;
  max-width: 420px;
  border: none;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,.2);
}

/* ── Responsive tweaks ───────────────────────────────────── */
@media (max-width: 576px) {
  .stock-num { font-size: 1.6rem !important; }
  .kpi-num   { font-size: 1.8rem !important; }
}