fix(pipelines): dark-theme the board + cards, put analytics above, add metric tooltips

Three follow-ups to the Pipelines page that shipped in #18:

1. Analytics strip now sits ABOVE the Kanban board rather than below, so
   top-line numbers read first and the board flows beneath.
2. Re-theme the board to match the rest of the dark app: slate-900 columns
   with slate-800 borders, slate-800 deal cards with stage-colored accent
   bar, emerald dollar values, and slate-500/slate-400 secondary text. The
   empty-column "Drop a deal here" and drop-zone highlight stay but in
   slate/emerald tones instead of white/light-gray.
3. Each analytics metric now has an info icon + tooltip explaining how it
   is calculated in plain language (e.g. Weighted Value explains the
   10% → 90% stage interpolation).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/(dashboard)/pipelines/page.tsx

@@ -380,6 +380,7 @@ export default function PipelinesPage() {
         </div>
       ) : (
         <>
+          <PipelineAnalytics stages={stages} deals={deals} />
           <PipelineBoard
             stages={stages}
             deals={deals}
@@ -387,7 +388,6 @@ export default function PipelinesPage() {
             onAddDeal={handleAddDeal}
             onEditDeal={handleEditDeal}
           />
-          <PipelineAnalytics stages={stages} deals={deals} />
         </>
       )}
 

src/components/pipelines/deal-card.tsx

@@ -47,10 +47,10 @@ export function DealCard({ deal, stage, onEdit, isOverlay }: DealCardProps) {
         e.stopPropagation();
         onEdit(deal);
       }}
-      className={`group relative w-full cursor-pointer rounded-xl bg-white pl-4 pr-3 py-3 text-left shadow-sm transition-all ${
+      className={`group relative w-full cursor-pointer rounded-xl border border-slate-700/50 bg-slate-800/70 pl-4 pr-3 py-3 text-left shadow-sm transition-all ${
         isOverlay
           ? "shadow-xl"
-          : "hover:-translate-y-0.5 hover:shadow-md"
+          : "hover:-translate-y-0.5 hover:border-slate-600 hover:bg-slate-800 hover:shadow-lg"
       }`}
     >
       {/* 4px left accent bar using stage color */}
@@ -61,17 +61,17 @@ export function DealCard({ deal, stage, onEdit, isOverlay }: DealCardProps) {
       />
 
       <div className="flex items-start justify-between gap-2">
-        <h4 className="flex-1 text-sm font-semibold leading-snug text-gray-900 break-words">
+        <h4 className="flex-1 text-sm font-semibold leading-snug text-white break-words">
           {deal.title}
         </h4>
         {deal.status === "won" && (
-          <span className="inline-flex shrink-0 items-center gap-1 rounded-full bg-emerald-100 px-2 py-0.5 text-[10px] font-semibold text-emerald-700">
+          <span className="inline-flex shrink-0 items-center gap-1 rounded-full bg-emerald-500/15 px-2 py-0.5 text-[10px] font-semibold text-emerald-400">
             <Check className="h-3 w-3" />
             Won
           </span>
         )}
         {deal.status === "lost" && (
-          <span className="inline-flex shrink-0 items-center gap-1 rounded-full bg-red-100 px-2 py-0.5 text-[10px] font-semibold text-red-700">
+          <span className="inline-flex shrink-0 items-center gap-1 rounded-full bg-red-500/15 px-2 py-0.5 text-[10px] font-semibold text-red-400">
             <X className="h-3 w-3" />
             Lost
           </span>
@@ -80,18 +80,18 @@ export function DealCard({ deal, stage, onEdit, isOverlay }: DealCardProps) {
 
       {/* Contact row */}
       <div className="mt-2 flex items-center gap-2">
-        <span className="flex h-5 w-5 items-center justify-center rounded-full bg-slate-200 text-[10px] font-semibold text-slate-700">
+        <span className="flex h-5 w-5 items-center justify-center rounded-full bg-slate-700 text-[10px] font-semibold text-slate-200">
           {initials(deal.contact?.name, deal.contact?.phone)}
         </span>
-        <span className="truncate text-xs text-gray-600">{contactLabel}</span>
+        <span className="truncate text-xs text-slate-400">{contactLabel}</span>
       </div>
 
       <div className="mt-2 flex items-center justify-between">
-        <span className="text-sm font-bold text-gray-900">
+        <span className="text-sm font-bold text-emerald-400">
           {formatCurrency(deal.value, deal.currency)}
         </span>
         {deal.expected_close_date && (
-          <span className="flex items-center gap-1 text-[11px] text-gray-500">
+          <span className="flex items-center gap-1 text-[11px] text-slate-500">
             <Calendar className="h-3 w-3" />
             {formatDate(deal.expected_close_date)}
           </span>
@@ -102,7 +102,7 @@ export function DealCard({ deal, stage, onEdit, isOverlay }: DealCardProps) {
         <div className="mt-2 flex items-center justify-end">
           <span
             title={assigneeLabel}
-            className="flex h-5 w-5 items-center justify-center rounded-full bg-emerald-100 text-[10px] font-semibold text-emerald-700"
+            className="flex h-5 w-5 items-center justify-center rounded-full bg-emerald-500/15 text-[10px] font-semibold text-emerald-400"
           >
             {initials(assigneeLabel)}
           </span>

src/components/pipelines/pipeline-analytics.tsx

@@ -2,7 +2,21 @@
 
 import { useMemo } from "react";
 import type { Deal, PipelineStage } from "@/types";
-import { DollarSign, TrendingUp, Target, BarChart3, Trophy, XCircle } from "lucide-react";
+import {
+  DollarSign,
+  TrendingUp,
+  Target,
+  BarChart3,
+  Trophy,
+  XCircle,
+  Info,
+} from "lucide-react";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from "@/components/ui/tooltip";
 
 interface PipelineAnalyticsProps {
   stages: PipelineStage[];
@@ -20,9 +34,8 @@ function formatCurrency(value: number) {
 
 /**
  * Weighted pipeline value: value × per-stage probability.
- * Spec rule: first stage = 10%, last stage before Won = 90%, Won = 100%.
- * Stages between are interpolated linearly.
- * Won deals count at 100%; Lost deals are excluded.
+ * First stage ≈ 10%, stages interpolate up to 90% before the final stage,
+ * final stage (Won) = 100%. Lost deals excluded.
  */
 function computeStageProbability(
   stage: PipelineStage,
@@ -32,11 +45,10 @@ function computeStageProbability(
   if (n <= 1) return 1;
   const index = sortedStages.findIndex((s) => s.id === stage.id);
   if (index < 0) return 0;
-  if (index === n - 1) return 1; // final stage (Won)
-  // First stage → 0.10, second-to-last → 0.90. Evenly spread.
-  const slots = n - 1; // number of non-final slots
+  if (index === n - 1) return 1;
+  const slots = n - 1;
   if (slots <= 1) return 0.1;
-  const t = index / (slots - 1); // 0..1
+  const t = index / (slots - 1);
   return 0.1 + t * (0.9 - 0.1);
 }
 
@@ -62,7 +74,6 @@ export function PipelineAnalytics({ stages, deals }: PipelineAnalyticsProps) {
       return sum + Number(d.value || 0) * prob;
     }, 0);
 
-    // This-month won/lost counts based on updated_at (falls back to created_at).
     const now = new Date();
     const monthStart = new Date(now.getFullYear(), now.getMonth(), 1);
     const thisMonth = (d: Deal) => {
@@ -87,38 +98,46 @@ export function PipelineAnalytics({ stages, deals }: PipelineAnalyticsProps) {
   }, [deals, sortedStages]);
 
   return (
+    <TooltipProvider>
       <div className="grid grid-cols-2 gap-3 rounded-xl border border-slate-800 bg-slate-900/60 p-4 sm:grid-cols-3 lg:grid-cols-6">
         <Metric
           icon={<BarChart3 className="h-4 w-4 text-slate-400" />}
           label="Total Deals"
           value={String(stats.totalCount)}
+          tooltip="Count of every deal in this pipeline that isn't marked as Lost. Won deals are still included."
         />
         <Metric
           icon={<DollarSign className="h-4 w-4 text-emerald-400" />}
           label="Pipeline Value"
           value={formatCurrency(stats.totalValue)}
+          tooltip="Sum of the dollar values of all deals in this pipeline, excluding deals marked as Lost."
         />
         <Metric
           icon={<Target className="h-4 w-4 text-blue-400" />}
           label="Avg Deal Size"
           value={formatCurrency(stats.avgValue)}
+          tooltip="Pipeline Value divided by Total Deals — the average value of a single non-lost deal."
         />
         <Metric
           icon={<TrendingUp className="h-4 w-4 text-purple-400" />}
           label="Weighted Value"
           value={formatCurrency(stats.weightedValue)}
+          tooltip="Expected revenue: each open deal's value × its stage probability. First stage ≈ 10%, stages progress up to 90%, Won = 100%. Lost deals are excluded."
         />
         <Metric
           icon={<Trophy className="h-4 w-4 text-emerald-400" />}
           label="Won This Month"
           value={String(stats.wonThisMonth)}
+          tooltip="Deals marked as Won since the first day of the current month."
         />
         <Metric
           icon={<XCircle className="h-4 w-4 text-red-400" />}
           label="Lost This Month"
           value={String(stats.lostThisMonth)}
+          tooltip="Deals marked as Lost since the first day of the current month."
         />
       </div>
+    </TooltipProvider>
   );
 }
 
@@ -126,16 +145,34 @@ function Metric({
   icon,
   label,
   value,
+  tooltip,
 }: {
   icon: React.ReactNode;
   label: string;
   value: string;
+  tooltip: string;
 }) {
   return (
     <div className="rounded-lg bg-slate-800/50 p-3">
       <div className="flex items-center gap-1.5 text-[10px] font-medium uppercase tracking-wider text-slate-400">
         {icon}
-        {label}
+        <span>{label}</span>
+        <Tooltip>
+          <TooltipTrigger
+            render={
+              <button
+                type="button"
+                aria-label={`How ${label} is calculated`}
+                className="ml-auto text-slate-500 hover:text-slate-300 focus:outline-none"
+              />
+            }
+          >
+            <Info className="h-3 w-3" />
+          </TooltipTrigger>
+          <TooltipContent side="top" className="max-w-xs text-left">
+            {tooltip}
+          </TooltipContent>
+        </Tooltip>
       </div>
       <p className="mt-1 text-base font-semibold text-white">{value}</p>
     </div>

src/components/pipelines/pipeline-board.tsx

@@ -172,35 +172,32 @@ function StageColumn({
   const { setNodeRef, isOver } = useDroppable({ id: stage.id });
 
   return (
-    <div
-      className="flex min-w-[280px] max-w-[300px] shrink-0 flex-col rounded-xl p-4"
-      style={{ backgroundColor: "#f9fafb" }}
-    >
-      {/* 3px colored top border (spec) — sits above the column's padding */}
+    <div className="flex min-w-[280px] max-w-[300px] shrink-0 flex-col rounded-xl border border-slate-800 bg-slate-900/60 p-4">
+      {/* 3px colored top border — sits above the column's padding */}
       <div
         className="-mx-4 -mt-4 h-[3px] rounded-t-xl"
         style={{ backgroundColor: stage.color }}
       />
       <div className="flex items-center justify-between pt-3">
-        <h3 className="truncate text-sm font-semibold text-gray-900">
+        <h3 className="truncate text-sm font-semibold text-white">
           {stage.name}
         </h3>
-        <span className="shrink-0 rounded-full bg-gray-200 px-2 py-0.5 text-[11px] font-medium text-gray-700">
+        <span className="shrink-0 rounded-full bg-slate-800 px-2 py-0.5 text-[11px] font-medium text-slate-300">
           {deals.length}
         </span>
       </div>
-      <p className="text-xs text-gray-500">{formatCurrency(totalValue)}</p>
+      <p className="text-xs text-slate-400">{formatCurrency(totalValue)}</p>
 
       <div
         ref={setNodeRef}
         className={`mt-3 flex flex-1 flex-col gap-2 rounded-lg transition-all ${
           isOver
-            ? "bg-emerald-50 outline outline-2 outline-dashed outline-emerald-400 outline-offset-2"
+            ? "bg-emerald-500/5 outline outline-2 outline-dashed outline-emerald-400 outline-offset-2"
             : ""
         }`}
       >
         {deals.length === 0 ? (
-          <div className="flex flex-1 items-center justify-center rounded-lg border-2 border-dashed border-gray-300 bg-white/40 py-10 text-xs text-gray-400">
+          <div className="flex flex-1 items-center justify-center rounded-lg border-2 border-dashed border-slate-700 py-10 text-xs text-slate-500">
             Drop a deal here
           </div>
         ) : (
@@ -219,7 +216,7 @@ function StageColumn({
         variant="ghost"
         size="sm"
         onClick={() => onAddDeal(stage.id)}
-        className="mt-3 w-full justify-start border border-dashed border-gray-300 bg-transparent text-gray-500 hover:border-gray-400 hover:bg-white hover:text-gray-700"
+        className="mt-3 w-full justify-start border border-dashed border-slate-700 bg-transparent text-slate-400 hover:border-slate-600 hover:bg-slate-800 hover:text-white"
       >
         <Plus className="mr-1 h-3 w-3" />
         Add Deal