feat: add AccentBlue palette, reduced margins, DrawFooter with branding support

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CertReports.Syncfusion/Helpers/PdfTheme.cs

@@ -2,6 +2,7 @@ using Syncfusion.Drawing;
 using Syncfusion.Pdf;
 using Syncfusion.Pdf.Graphics;
 using Syncfusion.Pdf.Grid;
+using Syncfusion.Pdf.Interactive;
 
 namespace CertReports.Syncfusion.Helpers;
 
@@ -22,6 +23,16 @@ public static class PdfTheme
     public static readonly Color NegativeValue = Color.FromArgb(255, 220, 53, 69);       // rosso
     public static readonly Color SectionTitle = Color.FromArgb(255, 46, 80, 144);
 
+    // Nuovi colori stile "Ibrido elegante"
+    public static readonly Color AccentBlue    = Color.FromArgb(255, 21,  101, 192);  // #1565C0
+    public static readonly Color NegativeRed   = Color.FromArgb(255, 204,   0,   0);  // #CC0000
+    public static readonly Color PositiveGreen = Color.FromArgb(255,  46, 125,  50);  // #2E7D32
+    public static readonly Color FooterText    = Color.FromArgb(255, 102, 102, 102);  // #666666
+    public static readonly Color SeparatorLine = Color.FromArgb(255, 221, 221, 221);  // #DDDDDD
+    public static readonly Color TableBorder   = Color.FromArgb(255, 187, 187, 187);  // #BBBBBB
+    public static readonly Color TableAltRow   = Color.FromArgb(255, 247, 249, 252);  // #F7F9FC
+    public static readonly Color TableHeaderBg = Color.FromArgb(255, 21,  101, 192);  // #1565C0
+
     // ─── Font ──────────────────────────────────────────────────────────
     private static readonly PdfStandardFont _fontRegular = new(PdfFontFamily.Helvetica, 8f);
     private static readonly PdfStandardFont _fontBold = new(PdfFontFamily.Helvetica, 8f, PdfFontStyle.Bold);
@@ -31,6 +42,11 @@ public static class PdfTheme
     private static readonly PdfStandardFont _fontSectionTitle = new(PdfFontFamily.Helvetica, 10f, PdfFontStyle.Bold);
     private static readonly PdfStandardFont _fontHeader = new(PdfFontFamily.Helvetica, 7f, PdfFontStyle.Bold);
 
+    private static readonly PdfStandardFont _fontFooter      = new(PdfFontFamily.Helvetica, 7f);
+    private static readonly PdfStandardFont _fontFooterBold  = new(PdfFontFamily.Helvetica, 7f, PdfFontStyle.Bold);
+    private static readonly PdfStandardFont _fontTable       = new(PdfFontFamily.Helvetica, 7.5f);
+    private static readonly PdfStandardFont _fontTableBold   = new(PdfFontFamily.Helvetica, 7.5f, PdfFontStyle.Bold);
+
     public static PdfFont Regular => _fontRegular;
     public static PdfFont Bold => _fontBold;
     public static PdfFont Small => _fontSmall;
@@ -38,12 +54,17 @@ public static class PdfTheme
     public static PdfFont Title => _fontTitle;
     public static PdfFont SectionTitleFont => _fontSectionTitle;
     public static PdfFont Header => _fontHeader;
+    public static PdfFont Footer      => _fontFooter;
+    public static PdfFont FooterBold  => _fontFooterBold;
+    public static PdfFont TableFont   => _fontTable;
+    public static PdfFont TableBold   => _fontTableBold;
 
     // ─── Margini & Layout ──────────────────────────────────────────────
-    public const float PageMargin = 40f;
+    public const float PageMargin     = 36f;   // era 40f
-    public const float RowHeight = 18f;
+    public const float RowHeight      = 14f;   // era 18f — KV pairs sezione Analisi
-    public const float HeaderRowHeight = 22f;
+    public const float HeaderRowHeight = 18f;  // era 22f — header sezioni
-    public const float CellPadding = 4f;
+    public const float CellPadding    = 4f;
+    public const float FooterHeight   = 28f;   // spazio riservato footer in fondo alla pagina
 
     // ─── Brushes ───────────────────────────────────────────────────────
     public static PdfBrush HeaderBrush => new PdfSolidBrush(HeaderBackground);
@@ -54,6 +75,15 @@ public static class PdfTheme
     public static PdfBrush PositiveBrush => new PdfSolidBrush(PositiveValue);
     public static PdfBrush NegativeBrush => new PdfSolidBrush(NegativeValue);
     public static PdfPen BorderPen => new PdfPen(BorderColor, 0.5f);
+    public static PdfBrush AccentBlueBrush    => new PdfSolidBrush(AccentBlue);
+    public static PdfBrush NegativeBrush2     => new PdfSolidBrush(NegativeRed);
+    public static PdfBrush PositiveBrush2     => new PdfSolidBrush(PositiveGreen);
+    public static PdfBrush FooterTextBrush    => new PdfSolidBrush(FooterText);
+    public static PdfBrush TableAltRowBrush   => new PdfSolidBrush(TableAltRow);
+    public static PdfBrush TableHeaderBrush   => new PdfSolidBrush(TableHeaderBg);
+    public static PdfPen   SeparatorPen       => new PdfPen(SeparatorLine, 0.5f);
+    public static PdfPen   TableBorderPen     => new PdfPen(TableBorder, 0.5f);
+    public static PdfPen   AccentBluePen      => new PdfPen(AccentBlue, 2.5f);
 
     // ─── Utility ───────────────────────────────────────────────────────
     public static PdfBrush ValueBrush(decimal? value)
@@ -123,4 +153,58 @@ public static class PdfTheme
             for (int c = 0; c < grid.Rows[r].Cells.Count; c++)
                 grid.Rows[r].Cells[c].Style.Borders = borders;
     }
+
+    /// <summary>
+    /// Disegna il footer in fondo alla pagina.
+    /// Se showBranding=true: "Powered by [Smart Roots↗]" a sx + numero pagina a dx.
+    /// Se showBranding=false: solo numero pagina centrato.
+    /// </summary>
+    public static void DrawFooter(
+        PdfGraphics g,
+        float pageWidth,
+        float pageHeight,
+        int pageNumber,
+        bool showBranding)
+    {
+        float footerY = pageHeight - FooterHeight + 6f;
+
+        // Linea separatrice
+        g.DrawLine(SeparatorPen, 0, footerY - 4f, pageWidth, footerY - 4f);
+
+        string pageLabel = pageNumber.ToString();
+
+        if (!showBranding)
+        {
+            // Solo numero pagina centrato
+            g.DrawString(pageLabel, Footer, FooterTextBrush,
+                new RectangleF(0, footerY, pageWidth, 12f),
+                new PdfStringFormat(PdfTextAlignment.Center));
+            return;
+        }
+
+        // "Powered by " testo normale
+        const string prefix = "Powered by ";
+        const string linkText = "Smart Roots";
+        const string linkUrl = "https://www.smart-roots.net";
+
+        float prefixWidth = Footer.MeasureString(prefix).Width;
+
+        g.DrawString(prefix, Footer, FooterTextBrush,
+            new RectangleF(0, footerY, prefixWidth + 2f, 12f));
+
+        // "Smart Roots" come hyperlink PDF
+        var webLink = new PdfTextWebLink
+        {
+            Url   = linkUrl,
+            Text  = linkText,
+            Font  = Footer,
+            Brush = AccentBlueBrush,
+        };
+        webLink.DrawTextWebLink(g, new PointF(prefixWidth, footerY));
+
+        // Numero pagina a destra
+        g.DrawString(pageLabel, Footer, FooterTextBrush,
+            new RectangleF(0, footerY, pageWidth, 12f),
+            new PdfStringFormat(PdfTextAlignment.Right));
+    }
 }