diff --git a/dashcam.html b/dashcam.html
index f87302b..461d32b 100644
--- a/dashcam.html
+++ b/dashcam.html
@@ -1,84 +1,83 @@
 
 <style>
 * { box-sizing: border-box; margin: 0; padding: 0; }
-#app { font-family: var(--font-mono); padding: 1rem 0; }
-#viewfinder { position: relative; width: 100%; aspect-ratio: 16/9; background: #000; border-radius: var(--border-radius-lg); overflow: hidden; }
-#video { width: 100%; height: 100%; object-fit: cover; display: block; }
+#app { font-family: var(--font-mono); background: #000; border-radius: var(--border-radius-lg); overflow: hidden; position: relative; width: 100%; height: 56vw; min-height: 300px; max-height: 92vh; }
+#app.fullscreen { border-radius: 0; height: 100vh; width: 100vw; position: fixed; inset: 0; z-index: 9999; }
+
+#video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
 
 #hud { position: absolute; inset: 0; pointer-events: none; }
 
-#speed-display { position: absolute; top: 12px; right: 12px; text-align: center; background: rgba(0,0,0,0.55); border-radius: 10px; padding: 6px 14px; }
-#speed-val { font-size: 38px; font-weight: 700; color: #fff; line-height: 1; }
-#speed-unit { font-size: 11px; color: #aaa; letter-spacing: 1px; margin-top: 2px; }
+#speed-display { position: absolute; top: 14px; right: 14px; text-align: center; background: rgba(0,0,0,0.45); border-radius: 12px; padding: 8px 16px; pointer-events: none; }
+#speed-val { font-size: 48px; font-weight: 700; color: #fff; line-height: 1; }
+#speed-unit { font-size: 11px; color: #aaa; letter-spacing: 1.5px; margin-top: 2px; }
+#max-speed { font-size: 10px; color: #888; margin-top: 3px; letter-spacing: 0.5px; }
 
-#rec-badge { position: absolute; top: 12px; left: 12px; display: none; align-items: center; gap: 6px; background: rgba(0,0,0,0.55); border-radius: 20px; padding: 5px 12px; color: #fff; font-size: 12px; }
-#rec-dot { width: 8px; height: 8px; border-radius: 50%; background: #e24b4a; animation: blink 1s infinite; }
-@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }
+#clock { position: absolute; top: 14px; left: 14px; background: rgba(0,0,0,0.45); border-radius: 20px; padding: 5px 12px; color: #fff; font-size: 13px; display: none; }
 
-#clock { position: absolute; top: 44px; left: 12px; background: rgba(0,0,0,0.55); border-radius: 20px; padding: 4px 12px; color: #fff; font-size: 12px; display: none; }
-
-#gps-bar { position: absolute; bottom: 0; left: 0; right: 0; background: rgba(0,0,0,0.6); padding: 6px 12px; display: none; flex-direction: column; gap: 2px; }
-#gps-row1 { display: flex; gap: 16px; align-items: center; }
-#gps-row2 { display: flex; gap: 16px; align-items: center; }
-.gps-item { font-size: 11px; color: #ccc; display: flex; gap: 5px; align-items: center; }
-.gps-label { color: #888; font-size: 10px; letter-spacing: 0.5px; }
+#gps-bar { position: absolute; bottom: 52px; left: 0; right: 0; background: rgba(0,0,0,0.5); padding: 5px 14px; display: none; flex-direction: column; gap: 3px; }
+#gps-row1, #gps-row2 { display: flex; gap: 18px; align-items: center; }
+.gps-item { font-size: 10px; color: #ccc; display: flex; gap: 4px; align-items: center; }
+.gps-label { color: #777; font-size: 9px; letter-spacing: 0.5px; }
 .gps-val { color: #fff; font-weight: 500; }
-#gps-dot { width: 7px; height: 7px; border-radius: 50%; background: #888; flex-shrink: 0; }
-#gps-dot.active { background: #1D9E75; animation: blink 2s infinite; }
+#gps-dot { width: 6px; height: 6px; border-radius: 50%; background: #555; flex-shrink: 0; }
+#gps-dot.active { background: #1D9E75; animation: gpsblink 2s infinite; }
+@keyframes gpsblink { 0%,100%{opacity:1} 50%{opacity:0.4} }
 
-#placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #888; font-size: 14px; gap: 8px; font-family: var(--font-sans); }
+#placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #888; font-size: 14px; gap: 10px; font-family: var(--font-sans); background: #000; }
 
-#controls { display: flex; gap: 10px; margin-top: 12px; }
-#start-btn { flex: 1; padding: 10px; border-radius: var(--border-radius-md); border: none; background: #1D9E75; color: #fff; font-size: 14px; font-weight: 500; cursor: pointer; }
-#start-btn:hover { background: #0F6E56; }
-#switch-btn { padding: 10px 16px; border-radius: var(--border-radius-md); border: 0.5px solid var(--color-border-secondary); background: var(--color-background-secondary); color: var(--color-text-primary); font-size: 14px; cursor: pointer; }
-#switch-btn:disabled { opacity: 0.4; cursor: default; }
-#unit-btn { padding: 10px 16px; border-radius: var(--border-radius-md); border: 0.5px solid var(--color-border-secondary); background: var(--color-background-secondary); color: var(--color-text-primary); font-size: 13px; cursor: pointer; }
+#btn-bar { position: absolute; bottom: 0; left: 0; right: 0; display: flex; justify-content: center; align-items: center; gap: 20px; padding: 8px 16px; background: rgba(0,0,0,0.45); pointer-events: all; }
 
-#status { font-size: 12px; color: var(--color-text-secondary); margin-top: 8px; font-family: var(--font-sans); min-height: 18px; }
+.hud-btn { background: rgba(255,255,255,0.12); border: 0.5px solid rgba(255,255,255,0.2); color: #fff; border-radius: 20px; padding: 5px 14px; font-size: 11px; font-family: var(--font-sans); cursor: pointer; letter-spacing: 0.5px; transition: background 0.15s; }
+.hud-btn:hover { background: rgba(255,255,255,0.22); }
+.hud-btn:disabled { opacity: 0.3; cursor: default; }
+.hud-btn.primary { background: rgba(29,158,117,0.7); border-color: rgba(29,158,117,0.9); }
+.hud-btn.primary:hover { background: rgba(29,158,117,0.9); }
+
+#status-bar { position: absolute; bottom: 40px; left: 14px; font-size: 10px; color: rgba(255,255,255,0.5); font-family: var(--font-sans); pointer-events: none; display: none; }
 </style>
 
 <div id="app">
-  <div id="viewfinder">
-    <video id="video" autoplay playsinline muted></video>
+  <video id="video" autoplay playsinline muted></video>
 
-    <div id="hud">
-      <div id="rec-badge"><div id="rec-dot"></div> REC</div>
-      <div id="clock"></div>
+  <div id="placeholder">
+    <div style="font-size:42px">&#127909;</div>
+    <div style="color:#aaa">Tap Start to begin</div>
+    <div style="font-size:11px;color:#555">Camera + location permissions required</div>
+  </div>
 
-      <div id="speed-display">
-        <div id="speed-val">0</div>
-        <div id="speed-unit">MPH</div>
+  <div id="hud">
+    <div id="clock"></div>
+
+    <div id="speed-display">
+      <div id="speed-val">--</div>
+      <div id="speed-unit">MPH</div>
+      <div id="max-speed">MAX --</div>
+    </div>
+
+    <div id="gps-bar">
+      <div id="gps-row1">
+        <div id="gps-dot"></div>
+        <div class="gps-item"><span class="gps-label">LAT</span><span class="gps-val" id="lat-val">--</span></div>
+        <div class="gps-item"><span class="gps-label">LNG</span><span class="gps-val" id="lng-val">--</span></div>
+        <div class="gps-item"><span class="gps-label">ALT</span><span class="gps-val" id="alt-val">--</span></div>
       </div>
-
-      <div id="gps-bar">
-        <div id="gps-row1">
-          <div id="gps-dot"></div>
-          <div class="gps-item"><span class="gps-label">LAT</span><span class="gps-val" id="lat-val">--</span></div>
-          <div class="gps-item"><span class="gps-label">LNG</span><span class="gps-val" id="lng-val">--</span></div>
-          <div class="gps-item"><span class="gps-label">ALT</span><span class="gps-val" id="alt-val">--</span></div>
-        </div>
-        <div id="gps-row2">
-          <div class="gps-item"><span class="gps-label">ACC</span><span class="gps-val" id="acc-val">--</span></div>
-          <div class="gps-item"><span class="gps-label">HDG</span><span class="gps-val" id="hdg-val">--</span></div>
-          <div class="gps-item"><span class="gps-label">MAX</span><span class="gps-val" id="max-val">0</span></div>
-        </div>
+      <div id="gps-row2">
+        <div class="gps-item"><span class="gps-label">ACC</span><span class="gps-val" id="acc-val">--</span></div>
+        <div class="gps-item"><span class="gps-label">HDG</span><span class="gps-val" id="hdg-val">--</span></div>
+        <div class="gps-item"><span class="gps-label">DIST</span><span class="gps-val" id="dist-val">0.0km</span></div>
       </div>
     </div>
 
-    <div id="placeholder">
-      <div style="font-size:36px">&#127909;</div>
-      <div>Tap "Start" to begin</div>
-      <div style="font-size:12px;color:#666">Camera + GPS permissions needed</div>
+    <div id="status-bar" id="status"></div>
+
+    <div id="btn-bar">
+      <button class="hud-btn primary" id="start-btn" onclick="startDashcam()">START</button>
+      <button class="hud-btn" id="flip-btn" onclick="switchCamera()" disabled>FLIP</button>
+      <button class="hud-btn" id="unit-btn" onclick="toggleUnit()">MPH/KPH</button>
+      <button class="hud-btn" id="fs-btn" onclick="toggleFullscreen()">&#x26F6; FULL</button>
     </div>
   </div>
-
-  <div id="controls">
-    <button id="start-btn" onclick="startDashcam()">Start</button>
-    <button id="switch-btn" onclick="switchCamera()" disabled>Flip</button>
-    <button id="unit-btn" onclick="toggleUnit()">MPH/KPH</button>
-  </div>
-  <div id="status">Ready</div>
 </div>
 
 <script>
@@ -87,88 +86,98 @@ let facingMode = 'environment';
 let watchId = null;
 let useMph = true;
 let maxSpeed = 0;
-let gpsActive = false;
+let lastPos = null;
+let totalDist = 0;
+let clockInterval = null;
 
-function toMph(ms) { return ms * 2.23694; }
-function toKph(ms) { return ms * 3.6; }
+function ms2mph(ms){ return ms * 2.23694; }
+function ms2kph(ms){ return ms * 3.6; }
+function cvt(ms){ return useMph ? ms2mph(ms) : ms2kph(ms); }
 
-function convertSpeed(ms) {
-  return useMph ? toMph(ms) : toKph(ms);
+function haversine(a, b) {
+  const R = 6371000;
+  const dLat = (b.lat - a.lat) * Math.PI / 180;
+  const dLng = (b.lng - a.lng) * Math.PI / 180;
+  const x = Math.sin(dLat/2)**2 + Math.cos(a.lat*Math.PI/180)*Math.cos(b.lat*Math.PI/180)*Math.sin(dLng/2)**2;
+  return R * 2 * Math.atan2(Math.sqrt(x), Math.sqrt(1-x));
 }
 
-function bearing(deg) {
-  if (deg === null || deg === undefined) return '--';
+function bearingLabel(deg) {
+  if (deg === null || deg === undefined || isNaN(deg)) return '--';
   const dirs = ['N','NE','E','SE','S','SW','W','NW'];
-  return dirs[Math.round(deg / 45) % 8] + ' ' + Math.round(deg) + '°';
+  return dirs[Math.round(deg/45)%8] + ' ' + Math.round(deg) + '\xb0';
 }
 
 function updateClock() {
-  const now = new Date();
-  const h = String(now.getHours()).padStart(2,'0');
-  const m = String(now.getMinutes()).padStart(2,'0');
-  const s = String(now.getSeconds()).padStart(2,'0');
-  document.getElementById('clock').textContent = h + ':' + m + ':' + s;
+  const n = new Date();
+  const pad = v => String(v).padStart(2,'0');
+  document.getElementById('clock').textContent = pad(n.getHours())+':'+pad(n.getMinutes())+':'+pad(n.getSeconds());
+}
+
+function setStatus(msg) {
+  const el = document.getElementById('status-bar');
+  el.textContent = msg;
+  el.style.display = msg ? 'block' : 'none';
 }
 
 function startGPS() {
-  if (!navigator.geolocation) {
-    document.getElementById('status').textContent = 'GPS not available in this browser';
-    return;
-  }
+  if (!navigator.geolocation) { setStatus('GPS unavailable'); return; }
   document.getElementById('gps-bar').style.display = 'flex';
   watchId = navigator.geolocation.watchPosition(pos => {
-    gpsActive = true;
-    document.getElementById('gps-dot').className = 'active';
     const c = pos.coords;
-    const spd = c.speed !== null ? c.speed : 0;
-    const converted = convertSpeed(spd);
+    const spd = c.speed !== null && c.speed >= 0 ? c.speed : 0;
+    const converted = cvt(spd);
     if (converted > maxSpeed) maxSpeed = converted;
 
+    const cur = { lat: c.latitude, lng: c.longitude };
+    if (lastPos) {
+      const d = haversine(lastPos, cur);
+      if (d < 200) totalDist += d;
+    }
+    lastPos = cur;
+
     document.getElementById('speed-val').textContent = Math.round(converted);
-    document.getElementById('speed-unit').textContent = useMph ? 'MPH' : 'KPH';
+    document.getElementById('max-speed').textContent = 'MAX ' + Math.round(maxSpeed);
     document.getElementById('lat-val').textContent = c.latitude.toFixed(5);
     document.getElementById('lng-val').textContent = c.longitude.toFixed(5);
-    document.getElementById('alt-val').textContent = c.altitude !== null ? Math.round(c.altitude) + 'm' : '--';
-    document.getElementById('acc-val').textContent = Math.round(c.accuracy) + 'm';
-    document.getElementById('hdg-val').textContent = bearing(c.heading);
-    document.getElementById('max-val').textContent = Math.round(maxSpeed);
-    document.getElementById('status').textContent = 'GPS locked';
+    document.getElementById('alt-val').textContent = c.altitude !== null ? Math.round(c.altitude)+'m' : '--';
+    document.getElementById('acc-val').textContent = Math.round(c.accuracy)+'m';
+    document.getElementById('hdg-val').textContent = bearingLabel(c.heading);
+    document.getElementById('dist-val').textContent = (totalDist/1000).toFixed(2)+'km';
+    document.getElementById('gps-dot').className = 'active';
+    setStatus('');
   }, err => {
-    document.getElementById('status').textContent = 'GPS: ' + err.message;
+    setStatus('GPS: ' + err.message);
     document.getElementById('gps-dot').className = '';
-  }, {
-    enableHighAccuracy: true,
-    maximumAge: 1000,
-    timeout: 10000
-  });
+  }, { enableHighAccuracy: true, maximumAge: 1000, timeout: 15000 });
 }
 
 async function startDashcam() {
   const btn = document.getElementById('start-btn');
   btn.disabled = true;
-  btn.textContent = 'Starting...';
+  btn.textContent = '...';
   try {
     if (stream) stream.getTracks().forEach(t => t.stop());
     stream = await navigator.mediaDevices.getUserMedia({
-      video: { facingMode: facingMode, width: { ideal: 1280 }, height: { ideal: 720 } },
+      video: { facingMode: facingMode, width: { ideal: 1920 }, height: { ideal: 1080 } },
       audio: false
     });
     document.getElementById('video').srcObject = stream;
     document.getElementById('placeholder').style.display = 'none';
-    document.getElementById('rec-badge').style.display = 'flex';
     document.getElementById('clock').style.display = 'block';
-    document.getElementById('switch-btn').disabled = false;
-    btn.textContent = 'Restart';
+    document.getElementById('flip-btn').disabled = false;
+    btn.textContent = 'RESTART';
     btn.disabled = false;
-    document.getElementById('status').textContent = 'Camera active — requesting GPS...';
-    if (watchId !== null) navigator.geolocation.clearWatch(watchId);
-    maxSpeed = 0;
+    if (watchId !== null) { navigator.geolocation.clearWatch(watchId); watchId = null; }
+    maxSpeed = 0; totalDist = 0; lastPos = null;
     startGPS();
-    setInterval(updateClock, 1000);
+    if (clockInterval) clearInterval(clockInterval);
+    clockInterval = setInterval(updateClock, 1000);
     updateClock();
+    setStatus('Acquiring GPS...');
   } catch(e) {
-    document.getElementById('status').textContent = 'Camera error: ' + e.message;
-    btn.textContent = 'Start';
+    setStatus('Camera: ' + e.message);
+    btn.textContent = 'START';
     btn.disabled = false;
   }
 }
@@ -180,8 +189,32 @@ function switchCamera() {
 
 function toggleUnit() {
   useMph = !useMph;
-  maxSpeed = useMph ? maxSpeed * (2.23694 / 3.6) : maxSpeed * (3.6 / 2.23694);
+  maxSpeed = useMph ? maxSpeed / 3.6 * 2.23694 : maxSpeed / 2.23694 * 3.6;
   document.getElementById('speed-unit').textContent = useMph ? 'MPH' : 'KPH';
-  document.getElementById('max-val').textContent = Math.round(maxSpeed);
+}
+
+function toggleFullscreen() {
+  const app = document.getElementById('app');
+  const btn = document.getElementById('fs-btn');
+  const isFs = app.classList.contains('fullscreen');
+  if (!isFs) {
+    if (app.requestFullscreen) {
+      app.requestFullscreen().catch(() => {});
+    }
+    app.classList.add('fullscreen');
+    btn.textContent = '\u2715 EXIT';
+  } else {
+    if (document.exitFullscreen && document.fullscreenElement) {
+      document.exitFullscreen().catch(() => {});
+    }
+    app.classList.remove('fullscreen');
+    btn.textContent = '\u26f6 FULL';
+  }
+  document.addEventListener('fullscreenchange', () => {
+    if (!document.fullscreenElement) {
+      app.classList.remove('fullscreen');
+      btn.textContent = '\u26f6 FULL';
+    }
+  }, { once: true });
 }
 </script>