0.3.0

Cargo.lock

@@ -661,6 +661,19 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "chrono"
+version = "0.4.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "145052bdd345b87320e369255277e3fb5152762ad123a901ef5c262dd38fe8d2"
+dependencies = [
+ "iana-time-zone",
+ "js-sys",
+ "num-traits",
+ "wasm-bindgen",
+ "windows-link",
+]
+
 [[package]]
 name = "clipboard-win"
 version = "5.4.1"
@@ -1520,6 +1533,30 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfa686283ad6dd069f105e5ab091b04c62850d3e4cf5d67debad1933f55023df"
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33e57f83510bb73707521ebaffa789ec8caf86f9657cad665b092b581d40e9fb"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "log",
+ "wasm-bindgen",
+ "windows-core 0.58.0",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "icu_collections"
 version = "2.1.1"
@@ -2669,8 +2706,9 @@ dependencies = [
 
 [[package]]
 name = "rlogg"
-version = "0.1.0"
+version = "0.3.0"
 dependencies = [
+ "chrono",
  "eframe",
  "rayon",
  "regex",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rlogg"
-version = "0.1.0"
+version = "0.3.0"
 edition = "2024"
 authors = ["Stanislav Pastushenko <staspast1@gmail.com>"]
 description = "A fast log file viewer with search, filtering, and highlighting capabilities"
@@ -17,3 +17,4 @@ regex = "1.11"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 rayon = "1.10"
+chrono = "0.4"

src/config.rs

@@ -12,6 +12,18 @@ pub struct AppConfig {
     pub last_search_query: String,
     #[serde(default)]
     pub highlight_rules: Vec<HighlightRule>,
+    #[serde(default)]
+    pub date_range_enabled: bool,
+    #[serde(default = "default_date_format")]
+    pub date_format: String,
+    #[serde(default)]
+    pub date_from: String,
+    #[serde(default)]
+    pub date_to: String,
+}
+
+fn default_date_format() -> String {
+    String::from("%Y-%m-%d %H:%M:%S")
 }
 
 impl AppConfig {

src/main.rs

@@ -7,6 +7,7 @@ mod highlight;
 mod line_index;
 mod search;
 mod tab_manager;
+mod theme;
 mod types;
 mod ui;
 
@@ -38,7 +39,11 @@ fn main() -> eframe::Result {
     eframe::run_native(
         "RLogg",
         options,
-        Box::new(move |_cc| Ok(Box::new(LogViewerApp::new(config)))),
+        Box::new(move |cc| {
+            // Apply the modern dark purple theme
+            theme::apply_theme(&cc.egui_ctx);
+            Ok(Box::new(LogViewerApp::new(config)))
+        }),
     )
 }
 
@@ -62,6 +67,10 @@ impl LogViewerApp {
                 case_sensitive: config.case_sensitive,
                 use_regex: config.use_regex,
                 history: config.search_history,
+                date_range_enabled: config.date_range_enabled,
+                date_format: config.date_format,
+                date_from: config.date_from,
+                date_to: config.date_to,
             },
             indexing_state: IndexingState::new(),
             search_state: SearchState::new(),
@@ -85,6 +94,10 @@ impl LogViewerApp {
             use_regex: self.search_panel_state.use_regex,
             last_search_query: self.search_panel_state.query.clone(),
             highlight_rules: self.highlight_manager.rules.clone(),
+            date_range_enabled: self.search_panel_state.date_range_enabled,
+            date_format: self.search_panel_state.date_format.clone(),
+            date_from: self.search_panel_state.date_from.clone(),
+            date_to: self.search_panel_state.date_to.clone(),
         };
         config.save();
     }
@@ -102,10 +115,42 @@ impl LogViewerApp {
 
     fn handle_search(&mut self) {
         if let Some(tab) = self.active_tab() {
+            // Validate date format if date range is enabled
+            if self.search_panel_state.date_range_enabled {
+                use chrono::NaiveDateTime;
+
+                // Validate format by trying to parse example dates
+                let test_date = "2025-01-01 00:00:00";
+                if NaiveDateTime::parse_from_str(test_date, &self.search_panel_state.date_format).is_err() {
+                    eprintln!("Invalid date format: {}", self.search_panel_state.date_format);
+                    eprintln!("Expected format like: %Y-%m-%d %H:%M:%S");
+                    return;
+                }
+
+                // Validate date_from and date_to can be parsed
+                if !self.search_panel_state.date_from.is_empty() {
+                    if NaiveDateTime::parse_from_str(&self.search_panel_state.date_from, &self.search_panel_state.date_format).is_err() {
+                        eprintln!("Invalid date_from format. Expected format: {}", self.search_panel_state.date_format);
+                        return;
+                    }
+                }
+
+                if !self.search_panel_state.date_to.is_empty() {
+                    if NaiveDateTime::parse_from_str(&self.search_panel_state.date_to, &self.search_panel_state.date_format).is_err() {
+                        eprintln!("Invalid date_to format. Expected format: {}", self.search_panel_state.date_format);
+                        return;
+                    }
+                }
+            }
+
             let params = SearchParams {
                 query: self.search_panel_state.query.clone(),
                 case_sensitive: self.search_panel_state.case_sensitive,
                 use_regex: self.search_panel_state.use_regex,
+                date_range_enabled: self.search_panel_state.date_range_enabled,
+                date_format: self.search_panel_state.date_format.clone(),
+                date_from: self.search_panel_state.date_from.clone(),
+                date_to: self.search_panel_state.date_to.clone(),
             };
 
             let line_index = Arc::clone(&tab.line_index);
@@ -127,6 +172,76 @@ impl LogViewerApp {
         }
     }
 
+    fn handle_export_filtered(&mut self) {
+        use std::fs::File;
+        use std::io::Write;
+        use std::time::SystemTime;
+
+        if let Some(tab) = self.active_tab() {
+            if tab.filtered_lines.is_empty() {
+                return;
+            }
+
+            // Generate timestamped filename
+            let original_path = &tab.file_path;
+            let file_stem = original_path
+                .file_stem()
+                .and_then(|s| s.to_str())
+                .unwrap_or("export");
+            let extension = original_path
+                .extension()
+                .and_then(|s| s.to_str())
+                .unwrap_or("log");
+
+            // Generate timestamp
+            let timestamp = SystemTime::now()
+                .duration_since(SystemTime::UNIX_EPOCH)
+                .unwrap()
+                .as_secs();
+
+            // Create new filename: filename_timestamp.extension
+            let export_filename = format!("{}_{}.{}", file_stem, timestamp, extension);
+            let export_path = original_path.with_file_name(export_filename);
+
+            // Write filtered lines to file
+            match File::create(&export_path) {
+                Ok(mut file) => {
+                    // Get the line index and file handle
+                    let line_index = Arc::clone(&tab.line_index);
+                    let file_path = tab.file_path.clone();
+
+                    // Open the original file for reading
+                    if let Ok(original_file) = File::open(&file_path) {
+                        let mut reader = std::io::BufReader::new(original_file);
+
+                        // Write each filtered line to the export file
+                        for filtered_line in &tab.filtered_lines {
+                            if let Some(content) = line_index.read_line(&mut reader, filtered_line.line_number) {
+                                writeln!(file, "{}", content).ok();
+                            }
+                        }
+
+                        // Open the exported file in a new tab
+                        if let Ok(line_index) = crate::line_index::LineIndex::build(&export_path) {
+                            if let Ok(exported_file) = File::open(&export_path) {
+                                let new_tab = crate::file_tab::FileTab::new(
+                                    export_path,
+                                    line_index,
+                                    exported_file,
+                                );
+                                self.tabs.push(new_tab);
+                                self.active_tab_index = self.tabs.len() - 1;
+                            }
+                        }
+                    }
+                }
+                Err(e) => {
+                    eprintln!("Failed to create export file: {}", e);
+                }
+            }
+        }
+    }
+
     fn handle_keyboard_input(&mut self, ctx: &egui::Context) {
         if let Some(tab) = self.active_tab_mut() {
             tab.page_scroll_direction = ctx.input(|i| {
@@ -194,6 +309,16 @@ impl eframe::App for LogViewerApp {
             self.handle_close_tab(index);
         }
 
+        // Check for Ctrl+F keyboard shortcut
+        let ctrl_f_pressed = ctx.input(|i| {
+            i.modifiers.ctrl && i.key_pressed(egui::Key::F)
+        });
+
+        // Check for Ctrl+Enter to execute search globally
+        let ctrl_enter_pressed = ctx.input(|i| {
+            i.modifiers.ctrl && i.key_pressed(egui::Key::Enter)
+        });
+
         // Render search panel
         let match_count = self.active_tab().map(|t| t.filtered_lines.len()).unwrap_or(0);
         let search_actions = render_search_panel(
@@ -201,9 +326,10 @@ impl eframe::App for LogViewerApp {
             &mut self.search_panel_state,
             &self.search_state,
             match_count,
+            ctrl_f_pressed,
         );
 
-        if search_actions.execute_search {
+        if search_actions.execute_search || ctrl_enter_pressed {
             add_to_history(
                 &mut self.search_panel_state.history,
                 &self.search_panel_state.query,
@@ -219,18 +345,53 @@ impl eframe::App for LogViewerApp {
             self.save_config();
         }
 
-        // Render filtered view
-        let show_filtered = !self.search_panel_state.query.is_empty();
+        // Render filtered view with improved styling
+        // Show filtered view if there's a query OR if date range is enabled
+        let show_filtered = !self.search_panel_state.query.is_empty() || self.search_panel_state.date_range_enabled;
         let highlight_rules = self.highlight_manager.rules.clone();
 
+        let mut export_clicked = false;
         if show_filtered {
             if let Some(tab) = self.active_tab_mut() {
                 if !tab.filtered_lines.is_empty() {
+                    let palette = theme::get_palette();
+
                     egui::TopBottomPanel::bottom("filtered_view")
                         .resizable(true)
-                        .default_height(200.0)
+                        .default_height(250.0)
+                        .min_height(150.0)
                         .show(ctx, |ui| {
-                            ui.heading("Filtered View");
+                            // Styled header
+                            let header_frame = egui::Frame::none()
+                                .fill(palette.bg_secondary)
+                                .inner_margin(egui::Margin::symmetric(12.0, 8.0));
+
+                            header_frame.show(ui, |ui| {
+                                ui.horizontal(|ui| {
+                                    let icon = egui::RichText::new("🔍")
+                                        .size(16.0);
+                                    ui.label(icon);
+
+                                    let title = egui::RichText::new("Search Results")
+                                        .size(16.0)
+                                        .color(palette.text_primary)
+                                        .strong();
+                                    ui.label(title);
+
+                                    let count = egui::RichText::new(format!("({} matches)", tab.filtered_lines.len()))
+                                        .size(14.0)
+                                        .color(palette.accent_bright);
+                                    ui.label(count);
+
+                                    ui.add_space(16.0);
+
+                                    // Export button
+                                    if ui.button("📤 Export").clicked() {
+                                        export_clicked = true;
+                                    }
+                                });
+                            });
+
                             ui.separator();
 
                             render_log_view(
@@ -246,15 +407,57 @@ impl eframe::App for LogViewerApp {
             }
         }
 
+        // Handle export after rendering the filtered view
+        if export_clicked {
+            self.handle_export_filtered();
+        }
+
         // Handle keyboard input
         self.handle_keyboard_input(ctx);
 
-        // Render main view
+        // Render main view with improved styling
         egui::CentralPanel::default().show(ctx, |ui| {
-            ui.heading("Main Log View");
-            ui.separator();
+            let palette = theme::get_palette();
 
             if let Some(tab) = self.active_tab_mut() {
+                // Styled header
+                let header_frame = egui::Frame::none()
+                    .fill(palette.bg_secondary)
+                    .inner_margin(egui::Margin::symmetric(12.0, 8.0));
+
+                header_frame.show(ui, |ui| {
+                    ui.horizontal(|ui| {
+                        let icon = egui::RichText::new("📄")
+                            .size(16.0);
+                        ui.label(icon);
+
+                        let title = egui::RichText::new("Log View")
+                            .size(16.0)
+                            .color(palette.text_primary)
+                            .strong();
+                        ui.label(title);
+
+                        // Show filename
+                        if let Some(filename) = tab.file_path.file_name() {
+                            ui.add_space(8.0);
+                            let filename_text = egui::RichText::new(format!("• {}", filename.to_string_lossy()))
+                                .size(14.0)
+                                .color(palette.text_secondary);
+                            ui.label(filename_text);
+                        }
+
+                        // Show line count
+                        ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
+                            let line_count = egui::RichText::new(format!("{} lines", tab.line_index.total_lines))
+                                .size(13.0)
+                                .color(palette.text_muted);
+                            ui.label(line_count);
+                        });
+                    });
+                });
+
+                ui.separator();
+
                 render_log_view(
                     ui,
                     LogViewContext {
@@ -265,7 +468,27 @@ impl eframe::App for LogViewerApp {
                 );
             } else {
                 ui.centered_and_justified(|ui| {
-                    ui.label("Click 'Open File' to load a log file");
+                    ui.vertical_centered(|ui| {
+                        ui.add_space(40.0);
+
+                        let icon = egui::RichText::new("📂")
+                            .size(48.0);
+                        ui.label(icon);
+
+                        ui.add_space(16.0);
+
+                        let text = egui::RichText::new("No file loaded")
+                            .size(18.0)
+                            .color(palette.text_secondary);
+                        ui.label(text);
+
+                        ui.add_space(8.0);
+
+                        let hint = egui::RichText::new("Click 'Open File' in the menu to get started")
+                            .size(14.0)
+                            .color(palette.text_muted);
+                        ui.label(hint);
+                    });
                 });
             }
         });

src/search.rs

@@ -5,6 +5,7 @@ use std::io::BufReader;
 use std::path::Path;
 use std::sync::{Arc, Mutex};
 use std::thread;
+use chrono::NaiveDateTime;
 
 use crate::line_index::LineIndex;
 use crate::types::FilteredLine;
@@ -43,6 +44,10 @@ pub struct SearchParams {
     pub query: String,
     pub case_sensitive: bool,
     pub use_regex: bool,
+    pub date_range_enabled: bool,
+    pub date_format: String,
+    pub date_from: String,
+    pub date_to: String,
 }
 
 impl SearchParams {
@@ -99,6 +104,136 @@ pub fn start_search(
     });
 }
 
+fn format_to_regex(format: &str) -> Option<String> {
+    // Convert chrono format to regex pattern
+    let mut regex = format.to_string();
+    regex = regex.replace("%Y", r"\d{4}");  // 4-digit year
+    regex = regex.replace("%m", r"\d{2}");  // 2-digit month
+    regex = regex.replace("%d", r"\d{2}");  // 2-digit day
+    regex = regex.replace("%H", r"\d{2}");  // 2-digit hour
+    regex = regex.replace("%M", r"\d{2}");  // 2-digit minute
+    regex = regex.replace("%S", r"\d{2}");  // 2-digit second
+    regex = regex.replace("%I", r"\d{2}");  // 2-digit hour (12h)
+    regex = regex.replace("%p", r"(AM|PM)"); // AM/PM
+    Some(regex)
+}
+
+fn extract_and_parse_date(content: &str, format: &str) -> Option<NaiveDateTime> {
+    // Convert format to regex pattern
+    let pattern = format_to_regex(format)?;
+    let regex = Regex::new(&pattern).ok()?;
+    let date_str = regex.captures(content)?.get(0)?.as_str();
+
+    // Parse using the provided format
+    NaiveDateTime::parse_from_str(date_str, format).ok()
+}
+
+fn find_line_with_date(
+    line_index: &LineIndex,
+    file_handle: &mut BufReader<File>,
+    start_line: usize,
+    format: &str,
+    move_down: bool,
+) -> Option<(usize, NaiveDateTime)> {
+    let max_search = 1000; // Search up to 10 lines
+    let range: Box<dyn Iterator<Item = usize>> = if move_down {
+        Box::new(start_line..std::cmp::min(start_line + max_search, line_index.total_lines))
+    } else {
+        Box::new((start_line.saturating_sub(max_search)..=start_line).rev())
+    };
+
+    for line_num in range {
+        if let Some(content) = line_index.read_line(file_handle, line_num) {
+            if let Some(date) = extract_and_parse_date(&content, format) {
+                return Some((line_num, date));
+            }
+        }
+    }
+    None
+}
+
+fn binary_search_date(
+    line_index: &LineIndex,
+    file_handle: &mut BufReader<File>,
+    target_date: &NaiveDateTime,
+    format: &str,
+    find_first: bool, // true = find first occurrence, false = find last
+) -> Option<usize> {
+    let mut left = 0;
+    let mut right = line_index.total_lines;
+    let mut result = None;
+
+    while left < right {
+        let mid = (left + right) / 2;
+
+        // Find a line with a date starting from mid, moving down
+        match find_line_with_date(line_index, file_handle, mid, format, true) {
+            Some((line_with_date, date)) => {
+                if find_first {
+                    // Finding first line >= target_date
+                    if date >= *target_date {
+                        result = Some(line_with_date);
+                        right = mid;
+                    } else {
+                        left = mid + 1;
+                    }
+                } else {
+                    // Finding last line <= target_date
+                    if date <= *target_date {
+                        result = Some(line_with_date);
+                        // Ensure we make progress in the binary search
+                        left = mid + 1;
+                    } else {
+                        right = mid;
+                    }
+                }
+            }
+            None => {
+                // Can't find a date near mid, try searching in a larger range
+                // or skip this section
+                if find_first {
+                    // When finding first, if we can't find a date, try the right half
+                    left = mid + 1;
+                } else {
+                    // When finding last, if we can't find a date, try the left half
+                    right = mid;
+                }
+            }
+        }
+    }
+
+    result
+}
+
+fn find_date_range(
+    params: &SearchParams,
+    line_index: &LineIndex,
+    file_path: &Path,
+) -> Option<(usize, usize)> {
+    if !params.date_range_enabled || params.date_from.is_empty() || params.date_to.is_empty() {
+        return None;
+    }
+
+    // Parse the target dates using the provided format
+    let date_from = NaiveDateTime::parse_from_str(&params.date_from, &params.date_format).ok()?;
+    let date_to = NaiveDateTime::parse_from_str(&params.date_to, &params.date_format).ok()?;
+
+    let file = File::open(file_path).ok()?;
+    let mut file_handle = BufReader::new(file);
+
+    // Binary search for first line >= date_from
+    let start_line = binary_search_date(line_index, &mut file_handle, &date_from, &params.date_format, true)?;
+
+    // Binary search for last line <= date_to
+    let end_line = binary_search_date(line_index, &mut file_handle, &date_to, &params.date_format, false)?;
+
+    if start_line < end_line {
+        Some((start_line, end_line + 1)) // +1 to include the end line
+    } else {
+        None
+    }
+}
+
 fn search_lines(
     params: &SearchParams,
     line_index: &LineIndex,
@@ -110,17 +245,28 @@ fn search_lines(
         return Vec::new();
     }
 
-    // Determine optimal chunk size based on total lines
-    // Aim for enough chunks to utilize all cores, but not too many to avoid overhead
-    let num_threads = rayon::current_num_threads();
-    let min_chunk_size = 1000; // Process at least 1000 lines per chunk
-    let chunk_size = (total_lines / (num_threads * 4)).max(min_chunk_size);
+    // Determine the line range to search (all lines or date range)
+    let (search_start, search_end) = if let Some((start, end)) = find_date_range(params, line_index, file_path) {
+        (start, end)
+    } else {
+        (0, total_lines)
+    };
 
-    // Split line numbers into chunks
-    let chunks: Vec<(usize, usize)> = (0..total_lines)
+    let lines_to_search = search_end - search_start;
+    if lines_to_search == 0 {
+        return Vec::new();
+    }
+
+    // Determine optimal chunk size based on lines to search
+    let num_threads = rayon::current_num_threads();
+    let min_chunk_size = 1000;
+    let chunk_size = (lines_to_search / (num_threads * 4)).max(min_chunk_size);
+
+    // Split line numbers into chunks within the search range
+    let chunks: Vec<(usize, usize)> = (search_start..search_end)
         .step_by(chunk_size)
         .map(|start| {
-            let end = (start + chunk_size).min(total_lines);
+            let end = (start + chunk_size).min(search_end);
             (start, end)
         })
         .collect();
@@ -141,13 +287,17 @@ fn search_lines(
             // Read lines in this chunk efficiently (one seek, sequential reads)
             let lines = line_index.read_line_range(&mut file_handle, *start, *end);
 
-            // Process each line
+            // Process each line - only store line numbers, not content
             for (line_number, content) in lines {
-                if params.matches_line(&content, &regex_matcher) {
-                    chunk_results.push(FilteredLine {
-                        line_number,
-                        content,
-                    });
+                // If date range is enabled and query is empty, include all lines in range
+                let should_include = if params.date_range_enabled && params.query.is_empty() {
+                    true
+                } else {
+                    params.matches_line(&content, &regex_matcher)
+                };
+
+                if should_include {
+                    chunk_results.push(FilteredLine { line_number });
                 }
             }
 

src/theme.rs

@@ -0,0 +1,178 @@
+use eframe::egui;
+
+/// Modern dark purple color palette
+pub struct ColorPalette {
+    // Background colors
+    pub bg_primary: egui::Color32,     // Main background
+    pub bg_secondary: egui::Color32,   // Secondary panels
+    pub bg_tertiary: egui::Color32,    // Elevated elements
+
+    // Accent colors
+    pub accent_primary: egui::Color32,   // Primary purple accent
+    pub accent_secondary: egui::Color32, // Secondary accent
+    pub accent_bright: egui::Color32,    // Bright highlights
+
+    // Text colors
+    pub text_primary: egui::Color32,
+    pub text_secondary: egui::Color32,
+    pub text_muted: egui::Color32,
+
+    // UI element colors
+    pub selection: egui::Color32,
+    pub line_number: egui::Color32,
+    pub border: egui::Color32,
+}
+
+impl ColorPalette {
+    pub fn dark_purple() -> Self {
+        Self {
+            // Deep purple-gray backgrounds
+            bg_primary: egui::Color32::from_rgb(24, 20, 32),      // #18141F
+            bg_secondary: egui::Color32::from_rgb(32, 26, 42),    // #201A2A
+            bg_tertiary: egui::Color32::from_rgb(42, 35, 54),     // #2A2336
+
+            // Purple accents - modern and vibrant
+            accent_primary: egui::Color32::from_rgb(138, 98, 208),   // #8A62D0
+            accent_secondary: egui::Color32::from_rgb(108, 68, 178), // #6C44B2
+            accent_bright: egui::Color32::from_rgb(168, 128, 238),   // #A880EE
+
+            // Text colors with good contrast
+            text_primary: egui::Color32::from_rgb(230, 230, 240),   // #E6E6F0
+            text_secondary: egui::Color32::from_rgb(190, 190, 210), // #BEBED2
+            text_muted: egui::Color32::from_rgb(140, 140, 165),     // #8C8CA5
+
+            // UI elements
+            selection: egui::Color32::from_rgb(108, 68, 178),       // #6C44B2
+            line_number: egui::Color32::from_rgb(110, 100, 130),    // #6E6482
+            border: egui::Color32::from_rgb(60, 50, 75),            // #3C324B
+
+        }
+    }
+}
+
+/// Apply the dark purple theme to the egui context
+pub fn apply_theme(ctx: &egui::Context) {
+    let palette = ColorPalette::dark_purple();
+
+    let mut style = (*ctx.style()).clone();
+
+    // === Spacing and sizing for better UX ===
+    style.spacing.item_spacing = egui::vec2(8.0, 6.0);
+    style.spacing.button_padding = egui::vec2(12.0, 6.0);
+    style.spacing.menu_margin = egui::Margin::same(8.0);
+    style.spacing.indent = 20.0;
+    style.spacing.scroll = egui::style::ScrollStyle {
+        bar_width: 10.0,
+        handle_min_length: 20.0,
+        bar_inner_margin: 2.0,
+        bar_outer_margin: 0.0,
+        ..Default::default()
+    };
+
+    // === Color scheme ===
+    let visuals = &mut style.visuals;
+
+    // Dark mode
+    visuals.dark_mode = true;
+
+    // Window and panel backgrounds
+    visuals.window_fill = palette.bg_primary;
+    visuals.panel_fill = palette.bg_primary;
+    visuals.faint_bg_color = palette.bg_secondary;
+    visuals.extreme_bg_color = palette.bg_tertiary;
+
+    // Text colors (using override_text_color to set custom text color)
+    visuals.override_text_color = Some(palette.text_primary);
+
+    // Widget colors
+    visuals.widgets.noninteractive.bg_fill = palette.bg_secondary;
+    visuals.widgets.noninteractive.weak_bg_fill = palette.bg_secondary;
+    visuals.widgets.noninteractive.bg_stroke = egui::Stroke::new(1.0, palette.border);
+    visuals.widgets.noninteractive.fg_stroke = egui::Stroke::new(1.0, palette.text_secondary);
+
+    // Inactive/hovered widgets
+    visuals.widgets.inactive.bg_fill = palette.bg_secondary;
+    visuals.widgets.inactive.weak_bg_fill = palette.bg_secondary;
+    visuals.widgets.inactive.bg_stroke = egui::Stroke::new(1.0, palette.border);
+    visuals.widgets.inactive.fg_stroke = egui::Stroke::new(1.0, palette.text_primary);
+
+    visuals.widgets.hovered.bg_fill = palette.bg_tertiary;
+    visuals.widgets.hovered.weak_bg_fill = palette.bg_tertiary;
+    visuals.widgets.hovered.bg_stroke = egui::Stroke::new(1.5, palette.accent_primary);
+    visuals.widgets.hovered.fg_stroke = egui::Stroke::new(1.5, palette.text_primary);
+
+    // Active/clicked widgets
+    visuals.widgets.active.bg_fill = palette.accent_secondary;
+    visuals.widgets.active.weak_bg_fill = palette.accent_secondary;
+    visuals.widgets.active.bg_stroke = egui::Stroke::new(2.0, palette.accent_bright);
+    visuals.widgets.active.fg_stroke = egui::Stroke::new(2.0, palette.text_primary);
+
+    visuals.widgets.open.bg_fill = palette.accent_secondary;
+    visuals.widgets.open.weak_bg_fill = palette.accent_secondary;
+    visuals.widgets.open.bg_stroke = egui::Stroke::new(1.5, palette.accent_primary);
+    visuals.widgets.open.fg_stroke = egui::Stroke::new(1.5, palette.text_primary);
+
+    // Selection
+    visuals.selection.bg_fill = palette.selection;
+    visuals.selection.stroke = egui::Stroke::new(1.0, palette.accent_bright);
+
+    // Hyperlinks
+    visuals.hyperlink_color = palette.accent_bright;
+
+    // Window styling
+    visuals.window_rounding = egui::Rounding::same(8.0);
+    visuals.window_shadow = egui::epaint::Shadow {
+        offset: egui::vec2(0.0, 8.0),
+        blur: 20.0,
+        spread: 0.0,
+        color: egui::Color32::from_black_alpha(80),
+    };
+    visuals.window_stroke = egui::Stroke::new(1.0, palette.border);
+
+    // Popup styling
+    visuals.popup_shadow = egui::epaint::Shadow {
+        offset: egui::vec2(0.0, 4.0),
+        blur: 16.0,
+        spread: 0.0,
+        color: egui::Color32::from_black_alpha(100),
+    };
+
+    // Resize handle
+    visuals.resize_corner_size = 12.0;
+
+    // Menu rounding
+    visuals.menu_rounding = egui::Rounding::same(6.0);
+
+    // Indent guide
+    visuals.indent_has_left_vline = true;
+    visuals.striped = true;
+
+    // Borders and separators
+    visuals.window_stroke = egui::Stroke::new(1.0, palette.border);
+
+    // === Text styles with better readability ===
+    style.text_styles.insert(
+        egui::TextStyle::Body,
+        egui::FontId::proportional(14.0),
+    );
+    style.text_styles.insert(
+        egui::TextStyle::Button,
+        egui::FontId::proportional(14.0),
+    );
+    style.text_styles.insert(
+        egui::TextStyle::Heading,
+        egui::FontId::proportional(18.0),
+    );
+    style.text_styles.insert(
+        egui::TextStyle::Monospace,
+        egui::FontId::monospace(13.0),
+    );
+
+    // Apply the style
+    ctx.set_style(style);
+}
+
+/// Get the color palette for use in custom rendering
+pub fn get_palette() -> ColorPalette {
+    ColorPalette::dark_purple()
+}

src/types.rs

@@ -7,8 +7,9 @@ pub struct HighlightRule {
     pub enabled: bool,
 }
 
+// Filtered lines now only store line numbers to save memory
+// Content is loaded on-demand when rendering
 #[derive(Clone)]
 pub struct FilteredLine {
     pub line_number: usize,
-    pub content: String,
 }

src/ui/log_view.rs

@@ -1,6 +1,7 @@
 use eframe::egui;
 
 use crate::file_tab::FileTab;
+use crate::theme;
 use crate::types::HighlightRule;
 
 pub struct LogViewContext<'a> {
@@ -86,7 +87,7 @@ fn handle_scroll_to_line(
 ) {
     if tab.scroll_to_main {
         let target_row = tab.main_scroll_offset;
-        let adgusted_row_height = row_height + 3f32;
+        let adgusted_row_height = row_height + 6f32;
         let scroll_offset = (target_row as f32) * adgusted_row_height;
 
         eprintln!("=== SCROLL TO LINE ===");
@@ -110,7 +111,7 @@ fn handle_page_scroll(
     total_lines: usize,
 ) {
     if let Some(direction) = tab.page_scroll_direction.take() {
-        let row_height_offset = row_height + 3f32;
+        let row_height_offset = row_height + 6f32;
         let viewport_height = ui.available_height();
         let rows_per_page = (viewport_height / row_height_offset).floor().max(1.0);
         let scroll_delta = direction * rows_per_page * row_height_offset;
@@ -161,15 +162,21 @@ fn render_visible_lines(
 
 fn get_line_content(tab: &mut FileTab, show_all: bool, display_idx: usize) -> (usize, String) {
     if show_all {
+        // Main view: read line by display index
         let content = tab
             .line_index
             .read_line(&mut tab.file_handle, display_idx)
             .unwrap_or_default();
         (display_idx, content)
     } else {
+        // Filtered view: get line number from filtered list, then read content on-demand
         if display_idx < tab.filtered_lines.len() {
-            let filtered = &tab.filtered_lines[display_idx];
-            (filtered.line_number, filtered.content.clone())
+            let line_number = tab.filtered_lines[display_idx].line_number;
+            let content = tab
+                .line_index
+                .read_line(&mut tab.file_handle, line_number)
+                .unwrap_or_default();
+            (line_number, content)
         } else {
             (0, String::new())
         }
@@ -186,49 +193,59 @@ fn render_line<F>(
 ) where
     F: FnOnce(bool),
 {
+    let palette = theme::get_palette();
+
     let highlight_color = highlight_rules
         .iter()
         .find(|rule| rule.enabled && content.contains(&rule.pattern))
         .map(|rule| egui::Color32::from_rgb(rule.color[0], rule.color[1], rule.color[2]));
 
+    // Improved color scheme with better visual hierarchy
     let bg_color = if is_selected {
-        egui::Color32::from_rgb(70, 130, 180)
+        palette.selection
     } else if let Some(color) = highlight_color {
         color
     } else {
         egui::Color32::TRANSPARENT
     };
 
+    // Better padding and margins for improved readability
     let frame = egui::Frame::none()
         .fill(bg_color)
-        .inner_margin(egui::Margin::symmetric(2.0, 1.0));
+        .inner_margin(egui::Margin::symmetric(8.0, 3.0));
 
     frame.show(ui, |ui| {
         ui.horizontal(|ui| {
-            let line_num_text = egui::RichText::new(format!("{:6} ", line_num + 1))
+            // Line numbers with better styling
+            let line_num_text = egui::RichText::new(format!("{:6}", line_num + 1))
                 .monospace()
                 .color(if is_selected {
-                    egui::Color32::WHITE
+                    palette.text_primary
                 } else {
-                    egui::Color32::DARK_GRAY
+                    palette.line_number
                 });
 
             let line_num_response = ui.label(line_num_text);
 
+            // Separator between line number and content
+            ui.add_space(4.0);
+            ui.separator();
+            ui.add_space(4.0);
+
+            // Content text with improved styling
             let text = egui::RichText::new(content).monospace().color(
                 if is_selected {
-                    egui::Color32::WHITE
+                    palette.text_primary
                 } else {
-                    ui.style().visuals.text_color()
+                    palette.text_primary
                 },
             );
 
             let text_response = ui
                 .scope(|ui| {
-                    ui.style_mut().visuals.selection.bg_fill =
-                        egui::Color32::from_rgb(255, 180, 50);
-                    ui.style_mut().visuals.selection.stroke.color =
-                        egui::Color32::from_rgb(200, 140, 30);
+                    // Better text selection colors
+                    ui.style_mut().visuals.selection.bg_fill = palette.accent_bright;
+                    ui.style_mut().visuals.selection.stroke.color = palette.accent_primary;
                     ui.add(egui::Label::new(text).selectable(true))
                 })
                 .inner;

src/ui/search_panel.rs

@@ -1,12 +1,17 @@
 use eframe::egui;
 
 use crate::search::SearchState;
+use crate::theme;
 
 pub struct SearchPanelState {
     pub query: String,
     pub case_sensitive: bool,
     pub use_regex: bool,
     pub history: Vec<String>,
+    pub date_range_enabled: bool,
+    pub date_format: String,
+    pub date_from: String,
+    pub date_to: String,
 }
 
 pub struct SearchPanelActions {
@@ -20,6 +25,7 @@ pub fn render_search_panel(
     state: &mut SearchPanelState,
     search_state: &SearchState,
     match_count: usize,
+    request_focus: bool,
 ) -> SearchPanelActions {
     let mut actions = SearchPanelActions {
         execute_search: false,
@@ -27,59 +33,127 @@ pub fn render_search_panel(
         config_changed: false,
     };
 
-    egui::TopBottomPanel::bottom("search_panel").show(ctx, |ui| {
-        ui.vertical(|ui| {
-            ui.horizontal(|ui| {
-                ui.label("🔍 Filter:");
+    let palette = theme::get_palette();
 
-                let text_edit_width = 200.0;
-                let text_response = ui.add_sized(
-                    [text_edit_width, 20.0],
-                    egui::TextEdit::singleline(&mut state.query),
-                );
+    egui::TopBottomPanel::bottom("search_panel")
+        .frame(egui::Frame::none()
+            .fill(palette.bg_secondary)
+            .inner_margin(egui::Margin::symmetric(12.0, 10.0)))
+        .show(ctx, |ui| {
+            ui.vertical(|ui| {
+                ui.horizontal(|ui| {
+                    // Filter label with icon
+                    let label = egui::RichText::new("🔍 Filter:")
+                        .size(14.0)
+                        .color(palette.text_primary);
+                    ui.label(label);
 
-                let enter_pressed =
-                    text_response.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter));
+                    ui.add_space(4.0);
 
-                if !state.history.is_empty() {
-                    render_history_dropdown(ui, state);
-                }
+                    // Text input with proper height matching buttons and stable ID
+                    let text_edit_width = 300.0;
+                    let search_input_id = egui::Id::new("search_input_field");
+                    let text_response = ui.add(
+                        egui::TextEdit::singleline(&mut state.query)
+                            .id(search_input_id)
+                            .desired_width(text_edit_width)
+                            .hint_text("Enter search query...")
+                    );
 
-                let case_changed = ui
-                    .checkbox(&mut state.case_sensitive, "Case sensitive")
-                    .changed();
-                let regex_changed = ui.checkbox(&mut state.use_regex, "Regex").changed();
-
-                if case_changed || regex_changed {
-                    actions.config_changed = true;
-                }
-
-                if ui.button("Search").clicked() || enter_pressed {
-                    actions.execute_search = true;
-                    actions.config_changed = true;
-                }
-
-                if !state.query.is_empty() {
-                    if ui.button("✖ Clear").clicked() {
-                        actions.clear_search = true;
+                    // Request focus if Ctrl+F was pressed
+                    if request_focus {
+                        text_response.request_focus();
                     }
 
-                    ui.label(format!("({} matches)", match_count));
+                    let enter_pressed =
+                        text_response.lost_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter));
+
+                    if !state.history.is_empty() {
+                        render_history_dropdown(ui, state);
+                    }
+
+                    ui.add_space(8.0);
+
+                    // Checkboxes
+                    let case_changed = ui
+                        .checkbox(&mut state.case_sensitive, "Case sensitive")
+                        .changed();
+                    let regex_changed = ui.checkbox(&mut state.use_regex, "Regex").changed();
+                    let date_range_changed = ui.checkbox(&mut state.date_range_enabled, "Date range").changed();
+
+                    if case_changed || regex_changed || date_range_changed {
+                        actions.config_changed = true;
+                    }
+
+                    ui.add_space(8.0);
+
+                    // Search button
+                    if ui.button("Search").clicked() || enter_pressed {
+                        actions.execute_search = true;
+                        actions.config_changed = true;
+                    }
+
+                    // Clear button and match count
+                    if !state.query.is_empty() {
+                        if ui.button("✖ Clear").clicked() {
+                            actions.clear_search = true;
+                        }
+
+                        ui.add_space(8.0);
+
+                        let count_text = egui::RichText::new(format!("{} matches", match_count))
+                            .color(palette.accent_bright)
+                            .size(13.0);
+                        ui.label(count_text);
+                    }
+                });
+
+                // Date range fields (show when date_range_enabled is true)
+                if state.date_range_enabled {
+                    ui.add_space(6.0);
+                    ui.horizontal(|ui| {
+                        ui.label("Format:");
+                        ui.add(
+                            egui::TextEdit::singleline(&mut state.date_format)
+                                .desired_width(200.0)
+                                .hint_text("%Y-%m-%d %H:%M:%S")
+                        );
+                    });
+
+                    ui.add_space(4.0);
+                    ui.horizontal(|ui| {
+                        ui.label("From:");
+                        ui.add(
+                            egui::TextEdit::singleline(&mut state.date_from)
+                                .desired_width(180.0)
+                                .hint_text("2025-01-01 00:00:00")
+                        );
+
+                        ui.add_space(8.0);
+
+                        ui.label("To:");
+                        ui.add(
+                            egui::TextEdit::singleline(&mut state.date_to)
+                                .desired_width(180.0)
+                                .hint_text("2025-01-01 01:00:00")
+                        );
+                    });
+                }
+
+                // Progress bar
+                if search_state.is_searching() {
+                    ui.add_space(6.0);
+                    let progress = search_state.get_progress();
+                    ui.horizontal(|ui| {
+                        ui.add(
+                            egui::ProgressBar::new(progress)
+                                .text(format!("Searching... {:.0}%", progress * 100.0))
+                                .animate(true),
+                        );
+                    });
                 }
             });
-
-            if search_state.is_searching() {
-                let progress = search_state.get_progress();
-                ui.horizontal(|ui| {
-                    ui.add(
-                        egui::ProgressBar::new(progress)
-                            .text(format!("Searching... {:.0}%", progress * 100.0))
-                            .animate(true),
-                    );
-                });
-            }
         });
-    });
 
     actions
 }

src/ui/tabs_panel.rs

@@ -13,29 +13,95 @@ pub fn render_tabs_panel(
     }
 
     egui::TopBottomPanel::top("tabs_panel").show(ctx, |ui| {
-        ui.horizontal(|ui| {
-            for (idx, tab) in tabs.iter().enumerate() {
-                let is_active = idx == *active_tab_index;
-                let button_text = if is_active {
-                    egui::RichText::new(format!("📄 {}", tab.filename())).strong()
-                } else {
-                    egui::RichText::new(format!("📄 {}", tab.filename()))
-                };
+        // Get or initialize scroll offset from persistent storage
+        let scroll_id = egui::Id::new("tabs_scroll_offset");
+        let mut scroll_offset: f32 = ui.ctx().data_mut(|d| d.get_persisted(scroll_id).unwrap_or(0.0));
 
-                if ui.selectable_label(is_active, button_text).clicked() {
-                    *active_tab_index = idx;
+        // Use horizontal ScrollArea for tabs with hidden scrollbar
+        let mut scroll_area = egui::ScrollArea::horizontal()
+            .auto_shrink([false; 2])
+            .scroll_bar_visibility(egui::scroll_area::ScrollBarVisibility::AlwaysHidden);
+
+        // Apply the stored scroll offset
+        scroll_area = scroll_area.horizontal_scroll_offset(scroll_offset);
+
+        let scroll_output = scroll_area.show(ui, |ui| {
+            ui.horizontal(|ui| {
+                for (idx, tab) in tabs.iter().enumerate() {
+                    let is_active = idx == *active_tab_index;
+                    let filename = tab.filename();
+
+                    // Truncate filename if too long (max 20 characters)
+                    let display_name = if filename.len() > 20 {
+                        format!("{}...", &filename[..17])
+                    } else {
+                        filename.clone()
+                    };
+
+                    let button_text = if is_active {
+                        egui::RichText::new(format!("📄 {}", display_name)).strong()
+                    } else {
+                        egui::RichText::new(format!("📄 {}", display_name))
+                    };
+
+                    // Fixed width for tab label (150 pixels)
+                    let tab_response = ui.add_sized(
+                        [150.0, ui.available_height()],
+                        egui::SelectableLabel::new(is_active, button_text)
+                    );
+
+                    if tab_response.clicked() {
+                        *active_tab_index = idx;
+                    }
+
+                    // Show full filename on hover
+                    if filename.len() > 20 {
+                        tab_response.on_hover_text(&filename);
+                    }
+
+                    if ui.small_button("✖").clicked() {
+                        *on_close_tab = Some(idx);
+                    }
+
+                    ui.separator();
                 }
-
-                if ui.small_button("✖").clicked() {
-                    *on_close_tab = Some(idx);
-                }
-
-                ui.separator();
-            }
-
-            if let Some(tab) = tabs.get(*active_tab_index) {
-                ui.label(format!("({} lines)", tab.line_index.total_lines));
-            }
+            })
         });
+
+        // Check if content overflows (tabs exceed screen width)
+        let content_width = scroll_output.content_size.x;
+        let viewport_width = scroll_output.inner_rect.width();
+        let content_overflows = content_width > viewport_width;
+
+        // Handle mouse wheel scrolling when hovering over tabs and content overflows
+        let mut should_update_offset = false;
+        if content_overflows && ui.rect_contains_pointer(scroll_output.inner_rect) {
+            // Get raw scroll delta outside of any closures
+            let raw_scroll_y = ui.input(|i| i.raw_scroll_delta.y);
+
+            // Check for raw mouse wheel events
+            if raw_scroll_y != 0.0 {
+                // Use vertical scroll (mouse wheel) for horizontal scrolling
+                let scroll_amount = -raw_scroll_y * 2.0;
+                scroll_offset = (scroll_offset + scroll_amount).max(0.0);
+
+                // Clamp to valid range
+                let max_offset = (content_width - viewport_width).max(0.0);
+                scroll_offset = scroll_offset.min(max_offset);
+
+                should_update_offset = true;
+            }
+        } else {
+            // Update offset from ScrollArea state (in case of other interactions)
+            scroll_offset = scroll_output.state.offset.x;
+            should_update_offset = true;
+        }
+
+        // Store the offset outside of any input closures
+        if should_update_offset {
+            ui.ctx().data_mut(|d| {
+                d.insert_persisted(scroll_id, scroll_offset);
+            });
+        }
     });
 }