refactor: improve invoice editor UX and fix visual issues

- Remove clock icons and hour text from calendar month view, show only activity bars
- Fix calendar week view mobile layout (2-column grid instead of vertical stack)
- Update invoice form skeleton to match actual layout structure
- Add client-side validation for empty invoice item descriptions with auto-scroll to error
- Fix hourly rate defaulting logic with proper type guards
- Update invoice details skeleton to match page structure with PageHeader
- Fix hydration error in sidebar (div inside button -> span)
- Improve dashboard chart color consistency (draft status now matches monthly metrics)
- Fix mobile header layout to prevent text squishing (vertical stack on mobile)
- Add IDs to invoice line items for scroll-into-view functionality

src/app/dashboard/_components/invoice-status-chart.tsx

@@ -46,11 +46,11 @@ export function InvoiceStatusChart({ invoices }: InvoiceStatusChartProps) {
 
   // Use theme-aware colors
   const COLORS = {
-    draft: "hsl(0, 0%, 60%)", // grey
-    sent: "hsl(214, 100%, 50%)", // blue
-    pending: "hsl(45, 100%, 50%)", // yellow
-    paid: "hsl(142, 76%, 36%)", // green
-    overdue: "hsl(0, 84%, 60%)", // red
+    draft: "hsl(0, 0%, 60%)", // neutral grey - matches monthly metrics chart
+    sent: "hsl(217, 91%, 60%)", // vibrant blue
+    pending: "hsl(217, 91%, 60%)", // blue
+    paid: "hsl(142, 71%, 45%)", // vibrant green
+    overdue: "hsl(var(--destructive))", // red
   };
   // Animation / motion preferences
   const { prefersReducedMotion, animationSpeedMultiplier } =

src/app/dashboard/_components/monthly-metrics-chart.tsx

@@ -118,17 +118,17 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
         <div className="bg-card border-border rounded-lg border p-3 shadow-lg">
           <p className="font-medium">{label}</p>
           <div className="space-y-1 text-sm">
-            <p style={{ color: "var(--chart-2)" }}>Paid: {data.paidInvoices}</p>
-            <p style={{ color: "var(--chart-1)" }}>
+            <p className="text-primary font-medium">Paid: {data.paidInvoices}</p>
+            <p className="text-primary/80">
               Pending: {data.pendingInvoices}
             </p>
-            <p style={{ color: "var(--chart-3)" }}>
+            <p className="text-destructive">
               Overdue: {data.overdueInvoices}
             </p>
-            <p style={{ color: "hsl(0, 0%, 60%)" }}>
+            <p className="text-muted-foreground">
               Draft: {data.draftInvoices}
             </p>
-            <p className="text-muted-foreground border-t pt-1">
+            <p className="text-foreground font-medium border-t pt-1">
               Total: {data.totalInvoices}
             </p>
           </div>
@@ -182,7 +182,7 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
             <Bar
               dataKey="paidInvoices"
               stackId="a"
-              fill="var(--chart-2)"
+              fill="hsl(142, 71%, 45%)"
               radius={[0, 0, 0, 0]}
               isAnimationActive={!prefersReducedMotion}
               animationDuration={barAnimationDuration}
@@ -191,7 +191,8 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
             <Bar
               dataKey="pendingInvoices"
               stackId="a"
-              fill="var(--chart-1)"
+              fill="hsl(217, 91%, 60%)"
+              fillOpacity={0.6}
               radius={[0, 0, 0, 0]}
               isAnimationActive={!prefersReducedMotion}
               animationDuration={barAnimationDuration}
@@ -200,7 +201,7 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
             <Bar
               dataKey="overdueInvoices"
               stackId="a"
-              fill="var(--chart-3)"
+              fill="hsl(var(--destructive))"
               radius={[2, 2, 0, 0]}
               isAnimationActive={!prefersReducedMotion}
               animationDuration={barAnimationDuration}
@@ -222,21 +223,20 @@ export function MonthlyMetricsChart({ invoices }: MonthlyMetricsChartProps) {
         <div className="flex items-center space-x-2">
           <div
             className="h-3 w-3 rounded-full"
-            style={{ backgroundColor: "var(--chart-2)" }}
+            style={{ backgroundColor: "hsl(142, 71%, 45%)" }}
           />
           <span className="text-xs">Paid</span>
         </div>
         <div className="flex items-center space-x-2">
           <div
             className="h-3 w-3 rounded-full"
-            style={{ backgroundColor: "var(--chart-1)" }}
+            style={{ backgroundColor: "hsl(217, 91%, 60%)", opacity: 0.6 }}
           />
           <span className="text-xs">Pending</span>
         </div>
         <div className="flex items-center space-x-2">
           <div
-            className="h-3 w-3 rounded-full"
-            style={{ backgroundColor: "var(--chart-3)" }}
+            className="h-3 w-3 rounded-full bg-destructive"
           />
           <span className="text-xs">Overdue</span>
         </div>

src/app/dashboard/_components/revenue-chart.tsx

@@ -88,10 +88,10 @@ export function RevenueChart({ data }: RevenueChartProps) {
         <AreaChart data={chartData}>
           <defs>
             <linearGradient id="revenueGradient" x1="0" y1="0" x2="0" y2="1">
-              <stop offset="5%" stopColor="hsl(0, 0%, 60%)" stopOpacity={0.4} />
+              <stop offset="5%" stopColor="hsl(217, 91%, 60%)" stopOpacity={0.4} />
               <stop
                 offset="95%"
-                stopColor="hsl(0, 0%, 60%)"
+                stopColor="hsl(217, 91%, 60%)"
                 stopOpacity={0.05}
               />
             </linearGradient>
@@ -100,19 +100,19 @@ export function RevenueChart({ data }: RevenueChartProps) {
             dataKey="monthLabel"
             axisLine={false}
             tickLine={false}
-            tick={{ fontSize: 12, fill: "var(--muted-foreground)" }}
+            tick={{ fontSize: 12, fill: "hsl(var(--muted-foreground))" }}
           />
           <YAxis
             axisLine={false}
             tickLine={false}
-            tick={{ fontSize: 12, fill: "var(--muted-foreground)" }}
+            tick={{ fontSize: 12, fill: "hsl(var(--muted-foreground))" }}
             tickFormatter={formatCurrency}
           />
           <Tooltip content={<CustomTooltip />} />
           <Area
             type="monotone"
             dataKey="revenue"
-            stroke="hsl(0, 0%, 60%)"
+            stroke="hsl(217, 91%, 60%)"
             strokeWidth={2}
             fill="url(#revenueGradient)"
             isAnimationActive={!prefersReducedMotion}