Implement styles

README.md

@@ -69,6 +69,93 @@ Ezdoc::Document.create("output.docx") do |doc|
 end
 ```
 
+### Headings
+
+Use `h1` through `h6` for document headings:
+
+```ruby
+Ezdoc::Document.create("output.docx") do |doc|
+  doc.h1 "Document Title"
+  doc.h2 "Chapter 1"
+  doc.h3 "Section 1.1"
+  doc.h4 "Subsection"
+  doc.h5 "Minor heading"
+  doc.h6 "Smallest heading"
+
+  # Headings with formatted content
+  doc.h2 do
+    doc.text "Chapter with "
+    doc.i { doc.text "emphasis" }
+  end
+end
+```
+
+### Styles
+
+Ezdoc includes built-in styles and supports custom style definitions.
+
+#### Built-in Styles
+
+```ruby
+Ezdoc::Document.create("output.docx") do |doc|
+  doc.p "This is a title", style: :title
+  doc.p "A subtitle", style: :subtitle
+  doc.p "A quotation", style: :quote
+  doc.p "puts 'code'", style: :code
+end
+```
+
+#### Custom Styles
+
+Define your own styles with text and paragraph properties:
+
+```ruby
+Ezdoc::Document.create("output.docx") do |doc|
+  # Define custom styles
+  doc.define_style :warning,
+    bold: true,
+    color: "FF0000",
+    size: 14
+
+  doc.define_style :note,
+    italic: true,
+    color: "0066CC",
+    font: "Georgia"
+
+  doc.define_style :centered,
+    align: :center,
+    size: 12
+
+  # Apply to paragraphs
+  doc.p "Warning message!", style: :warning
+  doc.p "Centered text", style: :centered
+
+  # Apply to text runs
+  doc.p do
+    doc.text "Normal text, "
+    doc.text "important!", style: :warning
+    doc.text ", and "
+    doc.text "a note", style: :note
+  end
+end
+```
+
+#### Style Properties
+
+**Text properties:**
+- `bold: true/false`
+- `italic: true/false`
+- `underline: true/false`
+- `color: "FF0000"` (hex RGB)
+- `size: 14` (points)
+- `font: "Arial"` (font family)
+
+**Paragraph properties:**
+- `align: :left / :center / :right / :justify`
+- `indent: 720` (twips, 1 inch = 1440 twips)
+- `spacing_before: 240` (twips)
+- `spacing_after: 240` (twips)
+
 ### Lists
 
 #### Bullet Lists
@@ -202,12 +289,14 @@ end
 
 | Method | Description |
 |--------|-------------|
-| `p(text)` | Create a paragraph with text |
-| `p { }` | Create a paragraph with block content |
-| `text(value)` | Add text to the current context |
+| `p(text, style:)` | Create a paragraph with text and optional style |
+| `p(style:) { }` | Create a paragraph with block content and optional style |
+| `text(value, style:)` | Add text with optional style to the current context |
+| `h1(text)` - `h6(text)` | Create headings (level 1-6) |
 | `b { }` | Bold formatting |
 | `i { }` | Italic formatting |
 | `u { }` | Underline formatting |
+| `define_style(name, **props)` | Define a custom style |
 | `ul { }` | Bullet list |
 | `ol { }` | Numbered list |
 | `li(text)` | List item with text |