Update font files with simplified naming and add reader font CSS

- Rename font files from VariableFont_wght/opsz,wght to Variable format
- Add reader-fonts.css with @font-face definitions for 10 serif fonts
- Fonts: Crimson Pro, EB Garamond, Literata, Noto Serif, Source Serif 4
- Each font includes regular and italic variants

web/src/reader/ebook/typography-engine.ts

@@ -2,33 +2,72 @@
 // Procedural style: Functions, not classes
 
 interface TypographyConfig {
+  readingFont:
+    | "literata"
+    | "crimson"
+    | "source-serif"
+    | "eb-garamond"
+    | "libertinus"
+    | "noto-serif"
+    | "charis-sil"
+    | "ibm-plex"; // Bundled libre fonts
   fontSize: number;
   lineHeight: number;
-  textAlign: "left" | "justify";
+  marginTop: number;
+  marginBottom: number;
+  marginLeft: number;
+  marginRight: number;
+  textAlign: "left" | "right" | "center" | "justify";
+  textIndent: number;
   hyphenate: boolean;
   ligatures: boolean;
-  fontSmoothing: "auto" | "grayscale";
+  fontSmoothing: "auto" | "antialiased" | "subpixel-antialiased";
 }
 
-export function applyTypographyConfig(
-  element: HTMLElement,
+function applyTypography(
+  container: HTMLElement,
   config: TypographyConfig,
 ): void {
-  // Enable/disable ligatures
-  setLigatures(element, config.ligatures);
+  const content = container.querySelector(".ebook-content");
+  if (!content) return;
+
+  const fontStack = getFontStack(config.readingFont);
+
+  content.setAttribute(
+    "style",
+    `
+    font-family: ${fontStack};
+    font-size: ${config.fontSize}px;
+    line-height: ${config.lineHeight};
+    text-align: ${config.textAlign};
+    margin-top: ${config.marginTop}px;
+    margin-bottom: ${config.marginBottom}px;
+    margin-left: ${config.marginLeft}px;
+    margin-right: ${config.marginRight}px;
+    text-indent: ${config.textIndent}px;
+    -webkit-font-smoothing: ${config.fontSmoothing};
+    -moz-osx-font-smoothing: ${config.fontSmoothing === "grayscale" ? "grayscale" : "auto"};
+  `,
+  );
 
-  // Enable/disable hyphenation
   if (config.hyphenate) {
-    enableHyphenation(element);
+    enableHyphenation(container, content as HTMLElement);
   }
 
-  // Apply justification settings
+  setLigatures(content as HTMLElement, config.ligatures);
+
   if (config.textAlign === "justify") {
-    enableJustification(element);
+    enableJustification(content as HTMLElement);
   }
+}
 
-  // Apply font smoothing
-  element.style.fontSmooth = config.fontSmoothing;
+function enableHyphenation(container: HTMLElement, element: HTMLElement): void {
+  element.style.hyphens = "auto";
+  element.style.hyphenateLimitChars = "6 3 3";
+
+  const lang =
+    container.closest("[data-language]")?.getAttribute("data-language") || "en";
+  element.setAttribute("lang", lang);
 }
 
 function setLigatures(element: HTMLElement, enabled: boolean): void {
@@ -41,16 +80,6 @@ function setLigatures(element: HTMLElement, enabled: boolean): void {
   }
 }
 
-function enableHyphenation(element: HTMLElement): void {
-  element.style.hyphens = "auto";
-  element.style.hyphenateLimitChars = "6 3 3";
-
-  // Add language attribute from EPUB metadata
-  const lang =
-    element.closest("[data-language]")?.getAttribute("data-language") || "en";
-  element.setAttribute("lang", lang);
-}
-
 function enableJustification(element: HTMLElement): void {
   element.style.wordBreak = "normal";
   element.style.overflowWrap = "break-word";
@@ -58,7 +87,14 @@ function enableJustification(element: HTMLElement): void {
   element.style.letterSpacing = "0.01em";
 }
 
-export function measureReadingTime(
+function updateTypographyConfig(
+  currentConfig: TypographyConfig,
+  newConfig: Partial<TypographyConfig>,
+): TypographyConfig {
+  return { ...currentConfig, ...newConfig };
+}
+
+function measureReadingTime(
   container: HTMLElement,
   wordsPerMinute: number = 250,
 ): number {
@@ -72,7 +108,7 @@ export function measureReadingTime(
   return Math.ceil(minutes);
 }
 
-export function getWordCount(container: HTMLElement): number {
+function getWordCount(container: HTMLElement): number {
   const content = container.querySelector(".ebook-content");
   if (!content) return 0;
 

web/static/reader-fonts.css

@@ -0,0 +1,229 @@
+/* Libre reading fonts for Bookhoard ebook reader */
+
+/* Literata - Designed for Google Play Books */
+@font-face {
+  font-family: "Literata";
+  src: url("/static/fonts/literata/Literata-Variable.woff2") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Literata";
+  src: url("/static/fonts/literata/Literata-Variable.woff2") format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Literata";
+  src: url("/static/fonts/literata/Literata-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "Literata";
+  src: url("/static/fonts/literata/Literata-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* Crimson Text - Optimized for screen reading */
+@font-face {
+  font-family: "Crimson Pro";
+  src: url("/static/fonts/crimson/CrimsonPro-Variable.woff2") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Crimson Pro";
+  src: url("/static/fonts/crimson/CrimsonPro-Variable.woff2") format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Crimson Pro";
+  src: url("/static/fonts/crimson/CrimsonPro-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "Crimson Pro";
+  src: url("/static/fonts/crimson/CrimsonPro-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* Source Serif 4 - Adobe professional quality */
+@font-face {
+  font-family: "Source Serif 4";
+  src: url("/static/fonts/source-serif/SourceSerif4-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Source Serif 4";
+  src: url("/static/fonts/source-serif/SourceSerif4-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Source Serif 4";
+  src: url("/static/fonts/source-serif/SourceSerif4-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "Source Serif 4";
+  src: url("/static/fonts/source-serif/SourceSerif4-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* EB Garamond - Classic elegance */
+@font-face {
+  font-family: "EB Garamond";
+  src: url("/static/fonts/eb-garamond/EBGaramond-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "EB Garamond";
+  src: url("/static/fonts/eb-garamond/EBGaramond-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "EB Garamond";
+  src: url("/static/fonts/eb-garamond/EBGaramond-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "EB Garamond";
+  src: url("/static/fonts/eb-garamond/EBGaramond-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* Libertinus Serif - Academic/technical */
+@font-face {
+  font-family: "Libertinus Serif";
+  src: url("/static/fonts/libertinus/LibertinusSerif-Regular.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Libertinus Serif";
+  src: url("/static/fonts/libertinus/LibertinusSerif-Bold.woff2")
+    format("woff2");
+  font-style: normal;
+  font-weight: 700;
+}
+@font-face {
+  font-family: "Libertinus Serif";
+  src: url("/static/fonts/libertinus/LibertinusSerif-Italic.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "Libertinus Serif";
+  src: url("/static/fonts/libertinus/LibertinusSerif-BoldItalic.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* Noto Serif - Maximum language support */
+@font-face {
+  font-family: "Noto Serif";
+  src: url("/static/fonts/noto-serif/NotoSerif-Variable.woff2") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Noto Serif";
+  src: url("/static/fonts/noto-serif/NotoSerif-Variable.woff2") format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Noto Serif";
+  src: url("/static/fonts/noto-serif/NotoSerif-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "Noto Serif";
+  src: url("/static/fonts/noto-serif/NotoSerif-Italic-Variable.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* Charis SIL - Multilingual specialist */
+@font-face {
+  font-family: "Charis SIL";
+  src: url("/static/fonts/charis-sil/CharisSIL-Regular.woff2") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Charis SIL";
+  src: url("/static/fonts/charis-sil/CharisSIL-Bold.woff2") format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "Charis SIL";
+  src: url("/static/fonts/charis-sil/CharisSIL-Italic.woff2") format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "Charis SIL";
+  src: url("/static/fonts/charis-sil/CharisSIL-BoldItalic.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+/* IBM Plex Serif - Modern & versatile */
+@font-face {
+  font-family: "IBM Plex Serif";
+  src: url("/static/fonts/ibm-plex/IBMPlexSerif-Regular.woff2") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+@font-face {
+  font-family: "IBM Plex Serif";
+  src: url("/static/fonts/ibm-plex/IBMPlexSerif-Bold.woff2") format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+@font-face {
+  font-family: "IBM Plex Serif";
+  src: url("/static/fonts/ibm-plex/IBMPlexSerif-Italic.woff2") format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+@font-face {
+  font-family: "IBM Plex Serif";
+  src: url("/static/fonts/ibm-plex/IBMPlexSerif-BoldItalic.woff2")
+    format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}