Dockerfile

@@ -13,7 +13,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
 
 # Expose port
-EXPOSE 8000
+EXPOSE 8001
 
-# Run the application
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]
+# Run the application using the new backend structure
+CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "8001"]

FRONTEND_README.md

@@ -0,0 +1,303 @@
+# Seismo Fleet Manager - Frontend Documentation
+
+## Overview
+
+This is the MVP frontend scaffold for **Seismo Fleet Manager**, built with:
+- **FastAPI** (backend framework)
+- **HTMX** (dynamic updates without JavaScript frameworks)
+- **TailwindCSS** (utility-first styling)
+- **Jinja2** (server-side templating)
+- **Leaflet** (interactive maps)
+
+No React, Vue, or other frontend frameworks are used.
+
+## Project Structure
+
+```
+seismo-fleet-manager/
+├── backend/
+│   ├── main.py                 # FastAPI app entry point
+│   ├── routers/
+│   │   ├── roster.py          # Fleet roster endpoints
+│   │   ├── units.py           # Individual unit endpoints
+│   │   └── photos.py          # Photo management endpoints
+│   ├── services/
+│   │   └── snapshot.py        # Mock status snapshot (replace with real logic)
+│   ├── static/
+│   │   └── style.css          # Custom CSS
+│   ├── database.py            # SQLAlchemy database setup
+│   ├── models.py              # Database models
+│   └── routes.py              # Legacy API routes
+├── templates/
+│   ├── base.html              # Base layout with sidebar & dark mode
+│   ├── dashboard.html         # Main dashboard page
+│   ├── roster.html            # Fleet roster page
+│   ├── unit_detail.html       # Unit detail page
+│   └── partials/
+│       └── roster_table.html  # HTMX partial for roster table
+├── data/
+│   └── photos/                # Photo storage (organized by unit_id)
+└── requirements.txt
+```
+
+## Running the Application
+
+### Install Dependencies
+
+```bash
+pip install -r requirements.txt
+```
+
+### Run the Server
+
+```bash
+uvicorn backend.main:app --host 0.0.0.0 --port 8001 --reload
+```
+
+The application will be available at:
+- **Web UI**: http://localhost:8001/
+- **API Docs**: http://localhost:8001/docs
+- **Health Check**: http://localhost:8001/health
+
+## Features
+
+### 1. Dashboard (`/`)
+
+The main dashboard provides an at-a-glance view of the fleet:
+
+- **Fleet Summary Card**: Total units, deployed units, status breakdown
+- **Recent Alerts Card**: Shows units with Missing or Pending status
+- **Recent Photos Card**: Placeholder for photo gallery
+- **Fleet Status Preview**: Quick view of first 5 units
+
+**Auto-refresh**: Dashboard updates every 10 seconds via HTMX
+
+### 2. Fleet Roster (`/roster`)
+
+A comprehensive table view of all seismograph units:
+
+**Columns**:
+- Status indicator (colored dot: green=OK, yellow=Pending, red=Missing)
+- Deployment indicator (blue dot if deployed)
+- Unit ID
+- Last seen timestamp
+- Age since last contact
+- Notes
+- Actions (View detail button)
+
+**Features**:
+- Auto-refresh every 10 seconds
+- Sorted by priority (Missing > Pending > OK)
+- Click any row to view unit details
+
+### 3. Unit Detail Page (`/unit/{unit_id}`)
+
+Split-screen layout with detailed information:
+
+**Left Column**:
+- Status card with real-time updates
+- Deployment status
+- Last contact time and file
+- Notes section
+- Editable metadata (mock form)
+
+**Right Column - Tabbed Interface**:
+- **Photos Tab**: Primary photo with thumbnail gallery
+- **Map Tab**: Interactive Leaflet map showing unit location
+- **History Tab**: Placeholder for event history
+
+**Auto-refresh**: Unit data updates every 10 seconds
+
+### 4. Dark/Light Mode
+
+Toggle button in sidebar switches between themes:
+- Uses Tailwind's `dark:` classes
+- Preference saved to localStorage
+- Smooth transitions on theme change
+
+## API Endpoints
+
+### Status & Fleet Data
+
+```http
+GET /api/status-snapshot
+```
+Returns complete fleet status snapshot with statistics.
+
+```http
+GET /api/roster
+```
+Returns sorted list of all units for roster table.
+
+```http
+GET /api/unit/{unit_id}
+```
+Returns detailed information for a single unit including coordinates.
+
+### Photo Management
+
+```http
+GET /api/unit/{unit_id}/photos
+```
+Returns list of photos for a unit, sorted by recency.
+
+```http
+GET /api/unit/{unit_id}/photo/{filename}
+```
+Serves a specific photo file.
+
+### Legacy Endpoints
+
+```http
+POST /emitters/report
+```
+Endpoint for emitters to report status (from original backend).
+
+```http
+GET /fleet/status
+```
+Returns database-backed fleet status (from original backend).
+
+## Mock Data
+
+### Location: `backend/services/snapshot.py`
+
+The `emit_status_snapshot()` function currently returns mock data with 8 units:
+
+- **BE1234**: OK, deployed (San Francisco)
+- **BE5678**: Pending, deployed (Los Angeles)
+- **BE9012**: Missing, deployed (New York)
+- **BE3456**: OK, benched (Chicago)
+- **BE7890**: OK, deployed (Houston)
+- **BE2468**: Pending, deployed
+- **BE1357**: OK, benched
+- **BE8642**: Missing, deployed
+
+**To replace with real data**: Update the `emit_status_snapshot()` function to call your Series3 emitter logic.
+
+## Styling
+
+### Color Palette
+
+The application uses your brand colors:
+
+```css
+orange:   #f48b1c
+navy:     #142a66
+burgundy: #7d234d
+```
+
+These are configured in the Tailwind config as `seismo-orange`, `seismo-navy`, `seismo-burgundy`.
+
+### Cards
+
+All cards use the consistent styling:
+```html
+<div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+```
+
+### Status Indicators
+
+- Green dot: OK status
+- Yellow dot: Pending status
+- Red dot: Missing status
+- Blue dot: Deployed
+- Gray dot: Benched
+
+## HTMX Usage
+
+HTMX enables dynamic updates without writing JavaScript:
+
+### Auto-refresh Example (Dashboard)
+
+```html
+<div hx-get="/api/status-snapshot"
+     hx-trigger="load, every 10s"
+     hx-swap="none"
+     hx-on::after-request="updateDashboard(event)">
+```
+
+This fetches the snapshot on page load and every 10 seconds, then calls a JavaScript function to update the DOM.
+
+### Partial Template Loading (Roster)
+
+```html
+<div hx-get="/partials/roster-table"
+     hx-trigger="load, every 10s"
+     hx-swap="innerHTML">
+```
+
+This replaces the entire inner HTML with the server-rendered roster table every 10 seconds.
+
+## Adding Photos
+
+To add photos for a unit:
+
+1. Create a directory: `data/photos/{unit_id}/`
+2. Add image files (jpg, jpeg, png, gif, webp)
+3. Photos will automatically appear on the unit detail page
+4. Most recent file becomes the primary photo
+
+Example:
+```bash
+mkdir -p data/photos/BE1234
+cp my-photo.jpg data/photos/BE1234/deployment-site.jpg
+```
+
+## Customization
+
+### Adding New Pages
+
+1. Create a template in `templates/`
+2. Add a route in `backend/main.py`:
+
+```python
+@app.get("/my-page", response_class=HTMLResponse)
+async def my_page(request: Request):
+    return templates.TemplateResponse("my_page.html", {"request": request})
+```
+
+3. Add a navigation link in `templates/base.html`
+
+### Adding New API Endpoints
+
+1. Create a router file in `backend/routers/`
+2. Include the router in `backend/main.py`:
+
+```python
+from backend.routers import my_router
+app.include_router(my_router.router)
+```
+
+## Docker Deployment
+
+The project includes Docker configuration:
+
+```bash
+docker-compose up
+```
+
+This will start the application on port 8001 (configured to avoid conflicts with port 8000).
+
+## Next Steps
+
+1. **Replace Mock Data**: Update `backend/services/snapshot.py` with real Series3 emitter logic
+2. **Database Integration**: The existing SQLAlchemy models can store historical data
+3. **Photo Upload**: Add a form to upload photos from the UI
+4. **Projects Management**: Implement the "Projects" page
+5. **Settings**: Add user preferences and configuration
+6. **Event History**: Populate the History tab with real event data
+7. **Authentication**: Add user login/authentication if needed
+8. **Notifications**: Add real-time alerts for critical status changes
+
+## Development Tips
+
+- The `--reload` flag auto-reloads the server when code changes
+- Use browser DevTools to debug HTMX requests (look for `HX-Request` headers)
+- Check `/docs` for interactive API documentation (Swagger UI)
+- Dark mode state persists in browser localStorage
+- All timestamps are currently mock data - replace with real values
+
+## License
+
+See main README.md for license information.

backend/main.py

@@ -0,0 +1,108 @@
+from fastapi import FastAPI, Request
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+from fastapi.templating import Jinja2Templates
+from fastapi.responses import HTMLResponse
+
+from backend.database import engine, Base
+from backend.routers import roster, units, photos
+from backend.services.snapshot import emit_status_snapshot
+
+# Create database tables
+Base.metadata.create_all(bind=engine)
+
+# Initialize FastAPI app
+app = FastAPI(
+    title="Seismo Fleet Manager",
+    description="Backend API for managing seismograph fleet status",
+    version="0.1.0"
+)
+
+# Configure CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Mount static files
+app.mount("/static", StaticFiles(directory="backend/static"), name="static")
+
+# Setup Jinja2 templates
+templates = Jinja2Templates(directory="templates")
+
+# Include API routers
+app.include_router(roster.router)
+app.include_router(units.router)
+app.include_router(photos.router)
+
+
+# Legacy routes from the original backend
+from backend import routes as legacy_routes
+app.include_router(legacy_routes.router)
+
+
+# HTML page routes
+@app.get("/", response_class=HTMLResponse)
+async def dashboard(request: Request):
+    """Dashboard home page"""
+    return templates.TemplateResponse("dashboard.html", {"request": request})
+
+
+@app.get("/roster", response_class=HTMLResponse)
+async def roster_page(request: Request):
+    """Fleet roster page"""
+    return templates.TemplateResponse("roster.html", {"request": request})
+
+
+@app.get("/unit/{unit_id}", response_class=HTMLResponse)
+async def unit_detail_page(request: Request, unit_id: str):
+    """Unit detail page"""
+    return templates.TemplateResponse("unit_detail.html", {
+        "request": request,
+        "unit_id": unit_id
+    })
+
+
+@app.get("/partials/roster-table", response_class=HTMLResponse)
+async def roster_table_partial(request: Request):
+    """Partial template for roster table (HTMX)"""
+    from datetime import datetime
+    snapshot = emit_status_snapshot()
+
+    units_list = []
+    for unit_id, unit_data in snapshot["units"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data["status"],
+            "age": unit_data["age"],
+            "last_seen": unit_data["last"],
+            "deployed": unit_data["deployed"],
+            "note": unit_data.get("note", ""),
+        })
+
+    # Sort by status priority (Missing > Pending > OK) then by ID
+    status_priority = {"Missing": 0, "Pending": 1, "OK": 2}
+    units_list.sort(key=lambda x: (status_priority.get(x["status"], 3), x["id"]))
+
+    return templates.TemplateResponse("partials/roster_table.html", {
+        "request": request,
+        "units": units_list,
+        "timestamp": datetime.now().strftime("%H:%M:%S")
+    })
+
+
+@app.get("/health")
+def health_check():
+    """Health check endpoint"""
+    return {
+        "message": "Seismo Fleet Manager v0.1",
+        "status": "running"
+    }
+
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8001)

backend/models.py

@@ -1,6 +1,6 @@
 from sqlalchemy import Column, String, DateTime
 from datetime import datetime
-from database import Base
+from backend.database import Base
 
 
 class Emitter(Base):

backend/routers/photos.py

@@ -0,0 +1,64 @@
+from fastapi import APIRouter, HTTPException
+from fastapi.responses import FileResponse
+from pathlib import Path
+from typing import List
+import os
+
+router = APIRouter(prefix="/api", tags=["photos"])
+
+PHOTOS_BASE_DIR = Path("data/photos")
+
+
+@router.get("/unit/{unit_id}/photos")
+def get_unit_photos(unit_id: str):
+    """
+    Reads /data/photos/<unit_id>/ and returns list of image filenames.
+    Primary photo = most recent file.
+    """
+    unit_photo_dir = PHOTOS_BASE_DIR / unit_id
+
+    if not unit_photo_dir.exists():
+        # Return empty list if no photos directory exists
+        return {
+            "unit_id": unit_id,
+            "photos": [],
+            "primary_photo": None
+        }
+
+    # Get all image files
+    image_extensions = {".jpg", ".jpeg", ".png", ".gif", ".webp"}
+    photos = []
+
+    for file_path in unit_photo_dir.iterdir():
+        if file_path.is_file() and file_path.suffix.lower() in image_extensions:
+            photos.append({
+                "filename": file_path.name,
+                "path": f"/api/unit/{unit_id}/photo/{file_path.name}",
+                "modified": file_path.stat().st_mtime
+            })
+
+    # Sort by modification time (most recent first)
+    photos.sort(key=lambda x: x["modified"], reverse=True)
+
+    # Primary photo is the most recent
+    primary_photo = photos[0]["filename"] if photos else None
+
+    return {
+        "unit_id": unit_id,
+        "photos": [p["filename"] for p in photos],
+        "primary_photo": primary_photo,
+        "photo_urls": [p["path"] for p in photos]
+    }
+
+
+@router.get("/unit/{unit_id}/photo/{filename}")
+def get_photo(unit_id: str, filename: str):
+    """
+    Serves a specific photo file.
+    """
+    file_path = PHOTOS_BASE_DIR / unit_id / filename
+
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail="Photo not found")
+
+    return FileResponse(file_path)

backend/routers/roster.py

@@ -0,0 +1,46 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+from datetime import datetime, timedelta
+from typing import Dict, Any
+import random
+
+from backend.database import get_db
+from backend.services.snapshot import emit_status_snapshot
+
+router = APIRouter(prefix="/api", tags=["roster"])
+
+
+@router.get("/status-snapshot")
+def get_status_snapshot(db: Session = Depends(get_db)):
+    """
+    Calls emit_status_snapshot() to get current fleet status.
+    This will be replaced with real Series3 emitter logic later.
+    """
+    return emit_status_snapshot()
+
+
+@router.get("/roster")
+def get_roster(db: Session = Depends(get_db)):
+    """
+    Returns list of units with their metadata and status.
+    Uses mock data for now.
+    """
+    snapshot = emit_status_snapshot()
+    units_list = []
+
+    for unit_id, unit_data in snapshot["units"].items():
+        units_list.append({
+            "id": unit_id,
+            "status": unit_data["status"],
+            "age": unit_data["age"],
+            "last_seen": unit_data["last"],
+            "deployed": unit_data["deployed"],
+            "note": unit_data.get("note", ""),
+            "last_file": unit_data.get("fname", "")
+        })
+
+    # Sort by status priority (Missing > Pending > OK) then by ID
+    status_priority = {"Missing": 0, "Pending": 1, "OK": 2}
+    units_list.sort(key=lambda x: (status_priority.get(x["status"], 3), x["id"]))
+
+    return {"units": units_list}

backend/routers/units.py

@@ -0,0 +1,44 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from datetime import datetime
+from typing import Dict, Any
+
+from backend.database import get_db
+from backend.services.snapshot import emit_status_snapshot
+
+router = APIRouter(prefix="/api", tags=["units"])
+
+
+@router.get("/unit/{unit_id}")
+def get_unit_detail(unit_id: str, db: Session = Depends(get_db)):
+    """
+    Returns detailed data for a single unit.
+    """
+    snapshot = emit_status_snapshot()
+
+    if unit_id not in snapshot["units"]:
+        raise HTTPException(status_code=404, detail=f"Unit {unit_id} not found")
+
+    unit_data = snapshot["units"][unit_id]
+
+    # Mock coordinates for now (will be replaced with real data)
+    mock_coords = {
+        "BE1234": {"lat": 37.7749, "lon": -122.4194, "location": "San Francisco, CA"},
+        "BE5678": {"lat": 34.0522, "lon": -118.2437, "location": "Los Angeles, CA"},
+        "BE9012": {"lat": 40.7128, "lon": -74.0060, "location": "New York, NY"},
+        "BE3456": {"lat": 41.8781, "lon": -87.6298, "location": "Chicago, IL"},
+        "BE7890": {"lat": 29.7604, "lon": -95.3698, "location": "Houston, TX"},
+    }
+
+    coords = mock_coords.get(unit_id, {"lat": 39.8283, "lon": -98.5795, "location": "Unknown"})
+
+    return {
+        "id": unit_id,
+        "status": unit_data["status"],
+        "age": unit_data["age"],
+        "last_seen": unit_data["last"],
+        "last_file": unit_data.get("fname", ""),
+        "deployed": unit_data["deployed"],
+        "note": unit_data.get("note", ""),
+        "coordinates": coords
+    }

backend/routes.py

@@ -4,8 +4,8 @@ from pydantic import BaseModel
 from datetime import datetime
 from typing import Optional, List
 
-from database import get_db
-from models import Emitter
+from backend.database import get_db
+from backend.models import Emitter
 
 router = APIRouter()
 

backend/services/snapshot.py

@@ -0,0 +1,96 @@
+"""
+Mock implementation of emit_status_snapshot().
+This will be replaced with real Series3 emitter logic by the user.
+"""
+
+from datetime import datetime, timedelta
+import random
+
+
+def emit_status_snapshot():
+    """
+    Mock function that returns fleet status snapshot.
+    In production, this will call the real Series3 emitter logic.
+
+    Returns a dictionary with unit statuses, ages, deployment status, etc.
+    """
+
+    # Mock data for demonstration
+    mock_units = {
+        "BE1234": {
+            "status": "OK",
+            "age": "1h 12m",
+            "last": "2025-11-22 12:32:10",
+            "fname": "evt_1234.mlg",
+            "deployed": True,
+            "note": "Bridge monitoring project - Golden Gate"
+        },
+        "BE5678": {
+            "status": "Pending",
+            "age": "2h 45m",
+            "last": "2025-11-22 11:05:33",
+            "fname": "evt_5678.mlg",
+            "deployed": True,
+            "note": "Dam structural analysis"
+        },
+        "BE9012": {
+            "status": "Missing",
+            "age": "5d 3h",
+            "last": "2025-11-17 09:15:00",
+            "fname": "evt_9012.mlg",
+            "deployed": True,
+            "note": "Tunnel excavation site"
+        },
+        "BE3456": {
+            "status": "OK",
+            "age": "30m",
+            "last": "2025-11-22 13:20:45",
+            "fname": "evt_3456.mlg",
+            "deployed": False,
+            "note": "Benched for maintenance"
+        },
+        "BE7890": {
+            "status": "OK",
+            "age": "15m",
+            "last": "2025-11-22 13:35:22",
+            "fname": "evt_7890.mlg",
+            "deployed": True,
+            "note": "Pipeline monitoring"
+        },
+        "BE2468": {
+            "status": "Pending",
+            "age": "4h 20m",
+            "last": "2025-11-22 09:30:15",
+            "fname": "evt_2468.mlg",
+            "deployed": True,
+            "note": "Building foundation survey"
+        },
+        "BE1357": {
+            "status": "OK",
+            "age": "45m",
+            "last": "2025-11-22 13:05:00",
+            "fname": "evt_1357.mlg",
+            "deployed": False,
+            "note": "Awaiting deployment"
+        },
+        "BE8642": {
+            "status": "Missing",
+            "age": "2d 12h",
+            "last": "2025-11-20 01:30:00",
+            "fname": "evt_8642.mlg",
+            "deployed": True,
+            "note": "Offshore platform - comms issue suspected"
+        }
+    }
+
+    return {
+        "units": mock_units,
+        "timestamp": datetime.now().isoformat(),
+        "total_units": len(mock_units),
+        "deployed_units": sum(1 for u in mock_units.values() if u["deployed"]),
+        "status_summary": {
+            "OK": sum(1 for u in mock_units.values() if u["status"] == "OK"),
+            "Pending": sum(1 for u in mock_units.values() if u["status"] == "Pending"),
+            "Missing": sum(1 for u in mock_units.values() if u["status"] == "Missing")
+        }
+    }

backend/static/style.css

@@ -0,0 +1,12 @@
+/* Custom styles for Seismo Fleet Manager */
+
+/* Additional custom styles can go here */
+
+.card-hover {
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.card-hover:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
+}

docker-compose.yml

@@ -5,15 +5,15 @@ services:
     build: .
     container_name: seismo-fleet-manager
     ports:
-      - "8001:8000"
+      - "8001:8001"
     volumes:
-      # Persist SQLite database
+      # Persist SQLite database and photos
       - ./data:/app/data
     environment:
       - PYTHONUNBUFFERED=1
     restart: unless-stopped
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:8000/"]
+      test: ["CMD", "curl", "-f", "http://localhost:8001/health"]
       interval: 30s
       timeout: 10s
       retries: 3

main.py

@@ -1,41 +0,0 @@
-from fastapi import FastAPI
-from fastapi.middleware.cors import CORSMiddleware
-
-from database import engine, Base
-from routes import router
-
-# Create database tables
-Base.metadata.create_all(bind=engine)
-
-# Initialize FastAPI app
-app = FastAPI(
-    title="Seismo Fleet Manager",
-    description="Backend API for managing seismograph fleet status",
-    version="0.1.0"
-)
-
-# Configure CORS (adjust origins as needed for your deployment)
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=["*"],  # In production, specify exact origins
-    allow_credentials=True,
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-# Include API routes
-app.include_router(router)
-
-
-@app.get("/")
-def root():
-    """Root endpoint - health check"""
-    return {
-        "message": "Seismo Fleet Manager API v0.1",
-        "status": "running"
-    }
-
-
-if __name__ == "__main__":
-    import uvicorn
-    uvicorn.run(app, host="0.0.0.0", port=8000)

requirements.txt

@@ -3,3 +3,5 @@ uvicorn[standard]==0.24.0
 sqlalchemy==2.0.23
 pydantic==2.5.0
 python-multipart==0.0.6
+jinja2==3.1.2
+aiofiles==23.2.1

templates/base.html

@@ -0,0 +1,150 @@
+<!DOCTYPE html>
+<html lang="en" class="dark">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>{% block title %}Seismo Fleet Manager{% endblock %}</title>
+
+    <!-- Tailwind CSS -->
+    <script src="https://cdn.tailwindcss.com"></script>
+
+    <!-- HTMX -->
+    <script src="https://unpkg.com/htmx.org@1.9.10"></script>
+
+    <!-- Leaflet for maps -->
+    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
+    <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
+
+    <!-- Custom Tailwind Config -->
+    <script>
+        tailwind.config = {
+            darkMode: 'class',
+            theme: {
+                extend: {
+                    colors: {
+                        seismo: {
+                            orange: '#f48b1c',
+                            navy: '#142a66',
+                            burgundy: '#7d234d',
+                        }
+                    }
+                }
+            }
+        }
+    </script>
+
+    <style>
+        /* Custom scrollbar */
+        ::-webkit-scrollbar {
+            width: 8px;
+            height: 8px;
+        }
+        ::-webkit-scrollbar-track {
+            background: transparent;
+        }
+        ::-webkit-scrollbar-thumb {
+            background: #888;
+            border-radius: 4px;
+        }
+        ::-webkit-scrollbar-thumb:hover {
+            background: #555;
+        }
+
+        /* Smooth transitions */
+        * {
+            transition: background-color 0.2s ease, color 0.2s ease;
+        }
+    </style>
+
+    {% block extra_head %}{% endblock %}
+</head>
+<body class="bg-gray-100 dark:bg-gray-900 text-gray-900 dark:text-gray-100">
+    <div class="flex h-screen overflow-hidden">
+        <!-- Sidebar -->
+        <aside class="w-64 bg-white dark:bg-slate-800 shadow-lg flex flex-col">
+            <!-- Logo -->
+            <div class="p-6 border-b border-gray-200 dark:border-gray-700">
+                <h1 class="text-2xl font-bold text-seismo-navy dark:text-seismo-orange">
+                    Seismo<br>
+                    <span class="text-seismo-orange dark:text-seismo-burgundy">Fleet Manager</span>
+                </h1>
+            </div>
+
+            <!-- Navigation -->
+            <nav class="flex-1 p-4 space-y-2">
+                <a href="/" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 {% if request.url.path == '/' %}bg-gray-100 dark:bg-gray-700{% endif %}">
+                    <svg class="w-5 h-5 mr-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 12l2-2m0 0l7-7 7 7M5 10v10a1 1 0 001 1h3m10-11l2 2m-2-2v10a1 1 0 01-1 1h-3m-6 0a1 1 0 001-1v-4a1 1 0 011-1h2a1 1 0 011 1v4a1 1 0 001 1m-6 0h6"></path>
+                    </svg>
+                    Dashboard
+                </a>
+
+                <a href="/roster" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 {% if request.url.path == '/roster' %}bg-gray-100 dark:bg-gray-700{% endif %}">
+                    <svg class="w-5 h-5 mr-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"></path>
+                    </svg>
+                    Fleet Roster
+                </a>
+
+                <a href="#" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 opacity-50 cursor-not-allowed">
+                    <svg class="w-5 h-5 mr-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"></path>
+                    </svg>
+                    Projects
+                </a>
+
+                <a href="#" class="flex items-center px-4 py-3 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-700 opacity-50 cursor-not-allowed">
+                    <svg class="w-5 h-5 mr-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z"></path>
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
+                    </svg>
+                    Settings
+                </a>
+            </nav>
+
+            <!-- Dark mode toggle -->
+            <div class="p-4 border-t border-gray-200 dark:border-gray-700">
+                <button onclick="toggleDarkMode()" class="w-full flex items-center justify-center px-4 py-3 rounded-lg bg-gray-100 dark:bg-gray-700 hover:bg-gray-200 dark:hover:bg-gray-600">
+                    <svg id="theme-toggle-dark-icon" class="w-5 h-5 hidden dark:block" fill="currentColor" viewBox="0 0 20 20">
+                        <path d="M17.293 13.293A8 8 0 016.707 2.707a8.001 8.001 0 1010.586 10.586z"></path>
+                    </svg>
+                    <svg id="theme-toggle-light-icon" class="w-5 h-5 block dark:hidden" fill="currentColor" viewBox="0 0 20 20">
+                        <path d="M10 2a1 1 0 011 1v1a1 1 0 11-2 0V3a1 1 0 011-1zm4 8a4 4 0 11-8 0 4 4 0 018 0zm-.464 4.95l.707.707a1 1 0 001.414-1.414l-.707-.707a1 1 0 00-1.414 1.414zm2.12-10.607a1 1 0 010 1.414l-.706.707a1 1 0 11-1.414-1.414l.707-.707a1 1 0 011.414 0zM17 11a1 1 0 100-2h-1a1 1 0 100 2h1zm-7 4a1 1 0 011 1v1a1 1 0 11-2 0v-1a1 1 0 011-1zM5.05 6.464A1 1 0 106.465 5.05l-.708-.707a1 1 0 00-1.414 1.414l.707.707zm1.414 8.486l-.707.707a1 1 0 01-1.414-1.414l.707-.707a1 1 0 011.414 1.414zM4 11a1 1 0 100-2H3a1 1 0 000 2h1z" fill-rule="evenodd" clip-rule="evenodd"></path>
+                    </svg>
+                    <span class="ml-3">Toggle theme</span>
+                </button>
+            </div>
+        </aside>
+
+        <!-- Main content -->
+        <main class="flex-1 overflow-y-auto">
+            <div class="p-8">
+                {% block content %}{% endblock %}
+            </div>
+        </main>
+    </div>
+
+    <script>
+        // Dark mode toggle
+        function toggleDarkMode() {
+            const html = document.documentElement;
+            if (html.classList.contains('dark')) {
+                html.classList.remove('dark');
+                localStorage.setItem('theme', 'light');
+            } else {
+                html.classList.add('dark');
+                localStorage.setItem('theme', 'dark');
+            }
+        }
+
+        // Load saved theme preference
+        if (localStorage.getItem('theme') === 'light') {
+            document.documentElement.classList.remove('dark');
+        } else if (localStorage.getItem('theme') === 'dark') {
+            document.documentElement.classList.add('dark');
+        }
+    </script>
+
+    {% block extra_scripts %}{% endblock %}
+</body>
+</html>

templates/dashboard.html

@@ -0,0 +1,178 @@
+{% extends "base.html" %}
+
+{% block title %}Dashboard - Seismo Fleet Manager{% endblock %}
+
+{% block content %}
+<div class="mb-8">
+    <h1 class="text-3xl font-bold text-gray-900 dark:text-white">Dashboard</h1>
+    <p class="text-gray-600 dark:text-gray-400 mt-1">Fleet overview and recent activity</p>
+</div>
+
+<!-- Dashboard cards with auto-refresh -->
+<div hx-get="/api/status-snapshot" hx-trigger="load, every 10s" hx-swap="none" hx-on::after-request="updateDashboard(event)">
+    <div class="grid grid-cols-1 md:grid-cols-3 gap-6 mb-8">
+        <!-- Fleet Summary Card -->
+        <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+            <div class="flex items-center justify-between mb-4">
+                <h2 class="text-lg font-semibold text-gray-900 dark:text-white">Fleet Summary</h2>
+                <svg class="w-6 h-6 text-seismo-orange" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"></path>
+                </svg>
+            </div>
+            <div class="space-y-3">
+                <div class="flex justify-between items-center">
+                    <span class="text-gray-600 dark:text-gray-400">Total Units</span>
+                    <span id="total-units" class="text-2xl font-bold text-gray-900 dark:text-white">--</span>
+                </div>
+                <div class="flex justify-between items-center">
+                    <span class="text-gray-600 dark:text-gray-400">Deployed</span>
+                    <span id="deployed-units" class="text-2xl font-bold text-blue-600 dark:text-blue-400">--</span>
+                </div>
+                <div class="border-t border-gray-200 dark:border-gray-700 pt-3 mt-3">
+                    <div class="flex justify-between items-center mb-2">
+                        <div class="flex items-center">
+                            <span class="w-3 h-3 rounded-full bg-green-500 mr-2"></span>
+                            <span class="text-sm text-gray-600 dark:text-gray-400">OK</span>
+                        </div>
+                        <span id="status-ok" class="font-semibold text-green-600 dark:text-green-400">--</span>
+                    </div>
+                    <div class="flex justify-between items-center mb-2">
+                        <div class="flex items-center">
+                            <span class="w-3 h-3 rounded-full bg-yellow-500 mr-2"></span>
+                            <span class="text-sm text-gray-600 dark:text-gray-400">Pending</span>
+                        </div>
+                        <span id="status-pending" class="font-semibold text-yellow-600 dark:text-yellow-400">--</span>
+                    </div>
+                    <div class="flex justify-between items-center">
+                        <div class="flex items-center">
+                            <span class="w-3 h-3 rounded-full bg-red-500 mr-2"></span>
+                            <span class="text-sm text-gray-600 dark:text-gray-400">Missing</span>
+                        </div>
+                        <span id="status-missing" class="font-semibold text-red-600 dark:text-red-400">--</span>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <!-- Recent Alerts Card -->
+        <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+            <div class="flex items-center justify-between mb-4">
+                <h2 class="text-lg font-semibold text-gray-900 dark:text-white">Recent Alerts</h2>
+                <svg class="w-6 h-6 text-red-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path>
+                </svg>
+            </div>
+            <div id="alerts-list" class="space-y-3">
+                <p class="text-sm text-gray-500 dark:text-gray-400">Loading alerts...</p>
+            </div>
+        </div>
+
+        <!-- Recent Photos Card -->
+        <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+            <div class="flex items-center justify-between mb-4">
+                <h2 class="text-lg font-semibold text-gray-900 dark:text-white">Recent Photos</h2>
+                <svg class="w-6 h-6 text-seismo-burgundy" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z"></path>
+                </svg>
+            </div>
+            <div class="text-center text-gray-500 dark:text-gray-400">
+                <svg class="w-16 h-16 mx-auto mb-2 opacity-50" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z"></path>
+                </svg>
+                <p class="text-sm">No recent photos</p>
+            </div>
+        </div>
+    </div>
+
+    <!-- Quick Access to Fleet Roster -->
+    <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+        <div class="flex items-center justify-between mb-4">
+            <h2 class="text-xl font-semibold text-gray-900 dark:text-white">Fleet Status</h2>
+            <a href="/roster" class="text-seismo-orange hover:text-seismo-burgundy font-medium flex items-center">
+                View All
+                <svg class="w-4 h-4 ml-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
+                </svg>
+            </a>
+        </div>
+        <div id="fleet-preview" class="space-y-2">
+            <p class="text-gray-500 dark:text-gray-400">Loading fleet data...</p>
+        </div>
+    </div>
+</div>
+
+<script>
+function updateDashboard(event) {
+    try {
+        const data = JSON.parse(event.detail.xhr.response);
+
+        // Update fleet summary
+        document.getElementById('total-units').textContent = data.total_units || 0;
+        document.getElementById('deployed-units').textContent = data.deployed_units || 0;
+        document.getElementById('status-ok').textContent = data.status_summary.OK || 0;
+        document.getElementById('status-pending').textContent = data.status_summary.Pending || 0;
+        document.getElementById('status-missing').textContent = data.status_summary.Missing || 0;
+
+        // Update alerts list
+        const alertsList = document.getElementById('alerts-list');
+        const missingUnits = Object.entries(data.units).filter(([id, unit]) => unit.status === 'Missing');
+        const pendingUnits = Object.entries(data.units).filter(([id, unit]) => unit.status === 'Pending');
+
+        if (missingUnits.length === 0 && pendingUnits.length === 0) {
+            alertsList.innerHTML = '<p class="text-sm text-green-600 dark:text-green-400">✓ All units reporting normally</p>';
+        } else {
+            let alertsHtml = '';
+            missingUnits.slice(0, 3).forEach(([id, unit]) => {
+                alertsHtml += `
+                    <div class="flex items-start space-x-2 text-sm">
+                        <span class="w-2 h-2 rounded-full bg-red-500 mt-1.5"></span>
+                        <div>
+                            <a href="/unit/${id}" class="font-medium text-red-600 dark:text-red-400 hover:underline">${id}</a>
+                            <p class="text-gray-600 dark:text-gray-400">Missing for ${unit.age}</p>
+                        </div>
+                    </div>
+                `;
+            });
+            pendingUnits.slice(0, 2).forEach(([id, unit]) => {
+                alertsHtml += `
+                    <div class="flex items-start space-x-2 text-sm">
+                        <span class="w-2 h-2 rounded-full bg-yellow-500 mt-1.5"></span>
+                        <div>
+                            <a href="/unit/${id}" class="font-medium text-yellow-600 dark:text-yellow-400 hover:underline">${id}</a>
+                            <p class="text-gray-600 dark:text-gray-400">Pending for ${unit.age}</p>
+                        </div>
+                    </div>
+                `;
+            });
+            alertsList.innerHTML = alertsHtml;
+        }
+
+        // Update fleet preview
+        const fleetPreview = document.getElementById('fleet-preview');
+        const unitsList = Object.entries(data.units).slice(0, 5);
+        let previewHtml = '';
+
+        unitsList.forEach(([id, unit]) => {
+            const statusColor = unit.status === 'OK' ? 'green' : unit.status === 'Pending' ? 'yellow' : 'red';
+            const deployedDot = unit.deployed ? '<span class="w-2 h-2 rounded-full bg-blue-500"></span>' : '';
+
+            previewHtml += `
+                <a href="/unit/${id}" class="flex items-center justify-between p-3 rounded-lg hover:bg-gray-50 dark:hover:bg-gray-700">
+                    <div class="flex items-center space-x-3">
+                        <span class="w-3 h-3 rounded-full bg-${statusColor}-500"></span>
+                        ${deployedDot}
+                        <span class="font-medium">${id}</span>
+                    </div>
+                    <span class="text-sm text-gray-500 dark:text-gray-400">${unit.age}</span>
+                </a>
+            `;
+        });
+
+        fleetPreview.innerHTML = previewHtml;
+
+    } catch (error) {
+        console.error('Error updating dashboard:', error);
+    }
+}
+</script>
+{% endblock %}

templates/partials/roster_table.html

@@ -0,0 +1,87 @@
+<div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 overflow-hidden">
+    <table class="min-w-full divide-y divide-gray-200 dark:divide-gray-700">
+        <thead class="bg-gray-50 dark:bg-gray-700">
+            <tr>
+                <th scope="col" class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
+                    Status
+                </th>
+                <th scope="col" class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
+                    Unit ID
+                </th>
+                <th scope="col" class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
+                    Last Seen
+                </th>
+                <th scope="col" class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
+                    Age
+                </th>
+                <th scope="col" class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
+                    Note
+                </th>
+                <th scope="col" class="px-6 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-300 uppercase tracking-wider">
+                    Actions
+                </th>
+            </tr>
+        </thead>
+        <tbody class="bg-white dark:bg-slate-800 divide-y divide-gray-200 dark:divide-gray-700">
+            {% for unit in units %}
+            <tr class="hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors">
+                <td class="px-6 py-4 whitespace-nowrap">
+                    <div class="flex items-center space-x-2">
+                        {% if unit.status == 'OK' %}
+                        <span class="w-3 h-3 rounded-full bg-green-500" title="OK"></span>
+                        {% elif unit.status == 'Pending' %}
+                        <span class="w-3 h-3 rounded-full bg-yellow-500" title="Pending"></span>
+                        {% else %}
+                        <span class="w-3 h-3 rounded-full bg-red-500" title="Missing"></span>
+                        {% endif %}
+
+                        {% if unit.deployed %}
+                        <span class="w-2 h-2 rounded-full bg-blue-500" title="Deployed"></span>
+                        {% else %}
+                        <span class="w-2 h-2 rounded-full bg-gray-300 dark:bg-gray-600" title="Benched"></span>
+                        {% endif %}
+                    </div>
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap">
+                    <div class="text-sm font-medium text-gray-900 dark:text-white">{{ unit.id }}</div>
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap">
+                    <div class="text-sm text-gray-500 dark:text-gray-400">{{ unit.last_seen }}</div>
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap">
+                    <div class="text-sm
+                        {% if unit.status == 'Missing' %}text-red-600 dark:text-red-400 font-semibold
+                        {% elif unit.status == 'Pending' %}text-yellow-600 dark:text-yellow-400
+                        {% else %}text-gray-500 dark:text-gray-400
+                        {% endif %}">
+                        {{ unit.age }}
+                    </div>
+                </td>
+                <td class="px-6 py-4">
+                    <div class="text-sm text-gray-500 dark:text-gray-400 truncate max-w-xs" title="{{ unit.note }}">
+                        {{ unit.note if unit.note else '-' }}
+                    </div>
+                </td>
+                <td class="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
+                    <a href="/unit/{{ unit.id }}" class="text-seismo-orange hover:text-seismo-burgundy inline-flex items-center">
+                        View
+                        <svg class="w-4 h-4 ml-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
+                        </svg>
+                    </a>
+                </td>
+            </tr>
+            {% endfor %}
+        </tbody>
+    </table>
+
+    <!-- Last updated indicator -->
+    <div class="px-6 py-3 bg-gray-50 dark:bg-gray-700 text-xs text-gray-500 dark:text-gray-400 text-right">
+        Last updated: <span id="last-updated">{{ timestamp }}</span>
+    </div>
+</div>
+
+<script>
+    // Update timestamp
+    document.getElementById('last-updated').textContent = new Date().toLocaleTimeString();
+</script>

templates/roster.html

@@ -0,0 +1,29 @@
+{% extends "base.html" %}
+
+{% block title %}Fleet Roster - Seismo Fleet Manager{% endblock %}
+
+{% block content %}
+<div class="mb-8">
+    <h1 class="text-3xl font-bold text-gray-900 dark:text-white">Fleet Roster</h1>
+    <p class="text-gray-600 dark:text-gray-400 mt-1">Real-time status of all seismograph units</p>
+</div>
+
+<!-- Auto-refresh roster every 10 seconds -->
+<div hx-get="/partials/roster-table" hx-trigger="load, every 10s" hx-swap="innerHTML">
+    <!-- Initial loading state -->
+    <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+        <div class="flex items-center justify-center py-12">
+            <div class="animate-pulse flex space-x-4">
+                <div class="flex-1 space-y-4 py-1">
+                    <div class="h-4 bg-gray-300 dark:bg-gray-600 rounded w-3/4"></div>
+                    <div class="space-y-2">
+                        <div class="h-4 bg-gray-300 dark:bg-gray-600 rounded"></div>
+                        <div class="h-4 bg-gray-300 dark:bg-gray-600 rounded w-5/6"></div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+{% endblock %}

templates/unit_detail.html

@@ -0,0 +1,268 @@
+{% extends "base.html" %}
+
+{% block title %}Unit {{ unit_id }} - Seismo Fleet Manager{% endblock %}
+
+{% block content %}
+<div class="mb-6">
+    <a href="/roster" class="text-seismo-orange hover:text-seismo-burgundy inline-flex items-center mb-4">
+        <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
+        </svg>
+        Back to Fleet Roster
+    </a>
+    <h1 class="text-3xl font-bold text-gray-900 dark:text-white">Unit {{ unit_id }}</h1>
+</div>
+
+<!-- Auto-refresh unit data -->
+<div hx-get="/api/unit/{{ unit_id }}" hx-trigger="load, every 10s" hx-swap="none" hx-on::after-request="updateUnitData(event)">
+    <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
+        <!-- Left Column: Unit Info -->
+        <div class="space-y-6">
+            <!-- Status Card -->
+            <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Unit Status</h2>
+                <div class="space-y-4">
+                    <div class="flex items-center justify-between">
+                        <span class="text-gray-600 dark:text-gray-400">Status</span>
+                        <div class="flex items-center space-x-2">
+                            <span id="status-indicator" class="w-3 h-3 rounded-full bg-gray-400"></span>
+                            <span id="status-text" class="font-semibold">Loading...</span>
+                        </div>
+                    </div>
+                    <div class="flex items-center justify-between">
+                        <span class="text-gray-600 dark:text-gray-400">Deployed</span>
+                        <span id="deployed-status" class="font-semibold">--</span>
+                    </div>
+                    <div class="flex items-center justify-between">
+                        <span class="text-gray-600 dark:text-gray-400">Age</span>
+                        <span id="age-value" class="font-semibold">--</span>
+                    </div>
+                    <div class="flex items-center justify-between">
+                        <span class="text-gray-600 dark:text-gray-400">Last Seen</span>
+                        <span id="last-seen-value" class="font-semibold">--</span>
+                    </div>
+                    <div class="flex items-center justify-between">
+                        <span class="text-gray-600 dark:text-gray-400">Last File</span>
+                        <span id="last-file-value" class="font-mono text-sm">--</span>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Notes Card -->
+            <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Notes</h2>
+                <div id="notes-content" class="text-gray-600 dark:text-gray-400">
+                    Loading...
+                </div>
+            </div>
+
+            <!-- Metadata Card -->
+            <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
+                <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Edit Metadata</h2>
+                <form class="space-y-4">
+                    <div>
+                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1">
+                            Unit Note
+                        </label>
+                        <textarea
+                            class="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange focus:border-transparent"
+                            rows="3"
+                            placeholder="Enter notes about this unit...">
+                        </textarea>
+                    </div>
+                    <button
+                        type="button"
+                        class="w-full px-4 py-2 bg-seismo-orange hover:bg-seismo-burgundy text-white rounded-lg font-medium transition-colors"
+                        onclick="alert('Mock: Save functionality not implemented')">
+                        Save Changes
+                    </button>
+                </form>
+            </div>
+        </div>
+
+        <!-- Right Column: Tabbed Interface -->
+        <div class="space-y-6">
+            <!-- Tabs -->
+            <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 overflow-hidden">
+                <div class="border-b border-gray-200 dark:border-gray-700">
+                    <nav class="flex -mb-px">
+                        <button
+                            onclick="switchTab('photos')"
+                            id="tab-photos"
+                            class="tab-button flex-1 py-4 px-6 text-center border-b-2 font-medium text-sm transition-colors border-seismo-orange text-seismo-orange">
+                            Photos
+                        </button>
+                        <button
+                            onclick="switchTab('map')"
+                            id="tab-map"
+                            class="tab-button flex-1 py-4 px-6 text-center border-b-2 font-medium text-sm transition-colors border-transparent text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-300">
+                            Map
+                        </button>
+                        <button
+                            onclick="switchTab('history')"
+                            id="tab-history"
+                            class="tab-button flex-1 py-4 px-6 text-center border-b-2 font-medium text-sm transition-colors border-transparent text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-300">
+                            History
+                        </button>
+                    </nav>
+                </div>
+
+                <!-- Tab Content -->
+                <div class="p-6">
+                    <!-- Photos Tab -->
+                    <div id="content-photos" class="tab-content">
+                        <div hx-get="/api/unit/{{ unit_id }}/photos" hx-trigger="load" hx-swap="none" hx-on::after-request="updatePhotos(event)">
+                            <div id="photos-container" class="text-center">
+                                <div class="animate-pulse">
+                                    <div class="h-64 bg-gray-200 dark:bg-gray-700 rounded-lg mb-4"></div>
+                                    <div class="grid grid-cols-4 gap-2">
+                                        <div class="h-20 bg-gray-200 dark:bg-gray-700 rounded"></div>
+                                        <div class="h-20 bg-gray-200 dark:bg-gray-700 rounded"></div>
+                                        <div class="h-20 bg-gray-200 dark:bg-gray-700 rounded"></div>
+                                        <div class="h-20 bg-gray-200 dark:bg-gray-700 rounded"></div>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+
+                    <!-- Map Tab -->
+                    <div id="content-map" class="tab-content hidden">
+                        <div id="map" style="height: 500px; width: 100%;" class="rounded-lg"></div>
+                        <div id="location-info" class="mt-4 text-sm text-gray-600 dark:text-gray-400">
+                            <p><strong>Location:</strong> <span id="location-name">Loading...</span></p>
+                            <p><strong>Coordinates:</strong> <span id="coordinates">--</span></p>
+                        </div>
+                    </div>
+
+                    <!-- History Tab -->
+                    <div id="content-history" class="tab-content hidden">
+                        <div class="text-center text-gray-500 dark:text-gray-400 py-12">
+                            <svg class="w-16 h-16 mx-auto mb-4 opacity-50" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"></path>
+                            </svg>
+                            <p class="text-lg font-medium">Event History</p>
+                            <p class="text-sm mt-2">Event history will be displayed here</p>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+let unitData = null;
+let map = null;
+let marker = null;
+
+function switchTab(tabName) {
+    // Update tab buttons
+    document.querySelectorAll('.tab-button').forEach(btn => {
+        btn.classList.remove('border-seismo-orange', 'text-seismo-orange');
+        btn.classList.add('border-transparent', 'text-gray-500', 'dark:text-gray-400');
+    });
+    document.getElementById(`tab-${tabName}`).classList.remove('border-transparent', 'text-gray-500', 'dark:text-gray-400');
+    document.getElementById(`tab-${tabName}`).classList.add('border-seismo-orange', 'text-seismo-orange');
+
+    // Update tab content
+    document.querySelectorAll('.tab-content').forEach(content => {
+        content.classList.add('hidden');
+    });
+    document.getElementById(`content-${tabName}`).classList.remove('hidden');
+
+    // Initialize map if switching to map tab
+    if (tabName === 'map' && !map && unitData) {
+        setTimeout(() => initMap(), 100);
+    }
+}
+
+function updateUnitData(event) {
+    try {
+        unitData = JSON.parse(event.detail.xhr.response);
+
+        // Update status
+        const statusIndicator = document.getElementById('status-indicator');
+        const statusText = document.getElementById('status-text');
+        const statusColors = {
+            'OK': 'bg-green-500',
+            'Pending': 'bg-yellow-500',
+            'Missing': 'bg-red-500'
+        };
+        statusIndicator.className = `w-3 h-3 rounded-full ${statusColors[unitData.status] || 'bg-gray-400'}`;
+        statusText.textContent = unitData.status;
+        statusText.className = `font-semibold ${unitData.status === 'OK' ? 'text-green-600 dark:text-green-400' : unitData.status === 'Pending' ? 'text-yellow-600 dark:text-yellow-400' : 'text-red-600 dark:text-red-400'}`;
+
+        // Update other fields
+        document.getElementById('deployed-status').textContent = unitData.deployed ? '✓ Deployed' : '✗ Benched';
+        document.getElementById('age-value').textContent = unitData.age;
+        document.getElementById('last-seen-value').textContent = unitData.last_seen;
+        document.getElementById('last-file-value').textContent = unitData.last_file;
+        document.getElementById('notes-content').textContent = unitData.note || 'No notes available';
+
+        // Update location info
+        if (unitData.coordinates) {
+            document.getElementById('location-name').textContent = unitData.coordinates.location;
+            document.getElementById('coordinates').textContent = `${unitData.coordinates.lat.toFixed(4)}, ${unitData.coordinates.lon.toFixed(4)}`;
+        }
+
+    } catch (error) {
+        console.error('Error updating unit data:', error);
+    }
+}
+
+function updatePhotos(event) {
+    try {
+        const data = JSON.parse(event.detail.xhr.response);
+        const container = document.getElementById('photos-container');
+
+        if (data.photos.length === 0) {
+            container.innerHTML = `
+                <div class="text-center text-gray-500 dark:text-gray-400 py-12">
+                    <svg class="w-16 h-16 mx-auto mb-4 opacity-50" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z"></path>
+                    </svg>
+                    <p class="text-lg font-medium">No Photos Available</p>
+                    <p class="text-sm mt-2">Photos will appear here when uploaded</p>
+                </div>
+            `;
+        } else {
+            let html = `
+                <div class="mb-4">
+                    <img src="${data.photo_urls[0]}" alt="Primary photo" class="w-full h-auto rounded-lg shadow-lg" id="primary-image">
+                </div>
+                <div class="grid grid-cols-4 gap-2">
+            `;
+
+            data.photo_urls.forEach((url, index) => {
+                html += `
+                    <img src="${url}" alt="Photo ${index + 1}"
+                         class="w-full h-20 object-cover rounded cursor-pointer hover:opacity-75 transition-opacity"
+                         onclick="document.getElementById('primary-image').src = this.src">
+                `;
+            });
+
+            html += '</div>';
+            container.innerHTML = html;
+        }
+    } catch (error) {
+        console.error('Error updating photos:', error);
+    }
+}
+
+function initMap() {
+    if (!unitData || !unitData.coordinates) return;
+
+    const coords = unitData.coordinates;
+    map = L.map('map').setView([coords.lat, coords.lon], 13);
+
+    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
+        attribution: '© OpenStreetMap contributors'
+    }).addTo(map);
+
+    marker = L.marker([coords.lat, coords.lon]).addTo(map)
+        .bindPopup(`<b>${unitData.id}</b><br>${coords.location}`)
+        .openPopup();
+}
+</script>
+{% endblock %}