Add HARD MONEY detail screen with sparklines and high/low data

- New SCREEN_HARD_MONEY_DETAIL accessible by tapping 'HARD MONEY' header
- 3-column layout: Bitcoin | Gold | Silver with spot prices
- Day/Month/Year high/low values (color-coded green/red)
- Day high/low from intraday hourly data
- Month high/low from last 22 trading days
- Year high/low from 1-year daily data
- Togglable sparklines: D(5m/5d)/W(1h/7d)/M(1d/1mo)/Y(1wk/1y)/A(1mo/max)
- Default view is Monthly sparkline
- Auto-refresh on period change

src/main.cpp

@@ -13,6 +13,7 @@
 #include <WiFiClientSecure.h>
 #include <HTTPClient.h>
 #include <Preferences.h>
+#include <time.h>
 
 #define SCREEN_WIDTH 800
 #define SCREEN_HEIGHT 480
@@ -159,6 +160,11 @@ const unsigned long WIFI_CONNECT_TIMEOUT = 15000;
 bool wifiConnecting = false;
 unsigned long wifiConnectStartTime = 0;
 
+bool timeSynced = false;
+bool firstBoot = true;
+const char* ntpServer = "pool.ntp.org";
+bool displayFlipped = false;
+
 #define HISTORY_DAYS 30
 double btcHistory[HISTORY_DAYS] = {0};
 double goldHistory[HISTORY_DAYS] = {0};
@@ -168,12 +174,31 @@ bool goldHistoryLoaded = false;
 bool silverHistoryLoaded = false;
 unsigned long lastHistoryRefresh = 0;
 
+#define HM_HISTORY_MAX 100
+double btcHmHistory[HM_HISTORY_MAX] = {0};
+double goldHmHistory[HM_HISTORY_MAX] = {0};
+double silverHmHistory[HM_HISTORY_MAX] = {0};
+int btcHmCount = 0;
+int goldHmCount = 0;
+int silverHmCount = 0;
+bool btcHmLoaded = false;
+bool goldHmLoaded = false;
+bool silverHmLoaded = false;
+double btcHighDay = 0, btcLowDay = 0, btcHighMonth = 0, btcLowMonth = 0, btcHighYear = 0, btcLowYear = 0;
+double goldHighDay = 0, goldLowDay = 0, goldHighMonth = 0, goldLowMonth = 0, goldHighYear = 0, goldLowYear = 0;
+double silverHighDay = 0, silverLowDay = 0, silverHighMonth = 0, silverLowMonth = 0, silverHighYear = 0, silverLowYear = 0;
+int hmSparklinePeriod = 2;
+bool hmNeedsRefresh = false;
+unsigned long hmLastFetch = 0;
+const unsigned long HM_FETCH_INTERVAL = 60000;
+
 enum ScreenState {
   SCREEN_DASHBOARD,
   SCREEN_CUSTOMIZE_STOCKS,
   SCREEN_CUSTOMIZE_INDICES,
   SCREEN_WIFI_CONFIG,
-  SCREEN_WIFI_PASSWORD
+  SCREEN_WIFI_PASSWORD,
+  SCREEN_HARD_MONEY_DETAIL
 };
 ScreenState currentScreen = SCREEN_DASHBOARD;
 
@@ -360,6 +385,223 @@ void fetchAllHistory() {
   fetchHistory("SI=F", silverHistory, &silverHistoryLoaded);
 }
 
+bool fetchHmHistoryForSymbol(const char* symbol, double* history, int* count, int period) {
+  const char* interval;
+  const char* range;
+
+  switch (period) {
+    case 0: interval = "5m"; range = "5d"; break;
+    case 1: interval = "1h"; range = "7d"; break;
+    case 2: interval = "1d"; range = "1mo"; break;
+    case 3: interval = "1wk"; range = "1y"; break;
+    case 4: interval = "1mo"; range = "max"; break;
+    default: interval = "1d"; range = "1mo"; break;
+  }
+
+  WiFiClientSecure client;
+  client.setInsecure();
+
+  HTTPClient http;
+  String url = "https://query1.finance.yahoo.com/v8/finance/chart/" + String(symbol) + "?interval=" + String(interval) + "&range=" + String(range);
+
+  if (!http.begin(client, url)) return false;
+
+  http.setUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36");
+  http.setTimeout(15000);
+
+  int httpCode = http.GET();
+  if (httpCode != HTTP_CODE_OK) {
+    http.end();
+    return false;
+  }
+
+  String payload = http.getString();
+  http.end();
+
+  String arraySearch = "\"close\":[";
+  int arrayIdx = payload.indexOf(arraySearch);
+  if (arrayIdx == -1) return false;
+
+  int arrayStart = arrayIdx + arraySearch.length();
+  int arrayEnd = payload.indexOf("]", arrayStart);
+  if (arrayEnd == -1) return false;
+
+  String closeArray = payload.substring(arrayStart, arrayEnd);
+
+  *count = 0;
+  int pos = 0;
+
+  while (pos < closeArray.length() && *count < HM_HISTORY_MAX) {
+    while (pos < closeArray.length() && (closeArray[pos] == ' ' || closeArray[pos] == ',')) pos++;
+    if (pos >= closeArray.length()) break;
+
+    int valueStart = pos;
+    while (pos < closeArray.length() && closeArray[pos] != ',' && closeArray[pos] != ' ') pos++;
+
+    String valueStr = closeArray.substring(valueStart, pos);
+
+    if (!valueStr.equals("null") && valueStr.length() > 0) {
+      double value = valueStr.toDouble();
+      if (value > 0) {
+        history[*count] = value;
+        (*count)++;
+      }
+    }
+    pos++;
+  }
+
+  return *count > 0;
+}
+
+void fetchHmHighLowForSymbol(const char* symbol, double* highDay, double* lowDay, double* highMonth, double* lowMonth, double* highYear, double* lowYear) {
+  if (WiFi.status() != WL_CONNECTED) return;
+
+  WiFiClientSecure client;
+  client.setInsecure();
+  HTTPClient http;
+
+  // First API call: hourly data for today's intraday high/low
+  String url = "https://query1.finance.yahoo.com/v8/finance/chart/" + String(symbol) + "?interval=1h&range=1d";
+  if (http.begin(client, url)) {
+    http.setUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36");
+    http.setTimeout(15000);
+    int httpCode = http.GET();
+    if (httpCode == HTTP_CODE_OK) {
+      String payload = http.getString();
+      http.end();
+
+      String arraySearch = "\"close\":[";
+      int arrayIdx = payload.indexOf(arraySearch);
+      if (arrayIdx != -1) {
+        int arrayStart = arrayIdx + arraySearch.length();
+        int arrayEnd = payload.indexOf("]", arrayStart);
+        if (arrayEnd != -1) {
+          String closeArray = payload.substring(arrayStart, arrayEnd);
+
+          double minDay = 1e18, maxDay = 0;
+          int pos = 0;
+          while (pos < closeArray.length()) {
+            while (pos < closeArray.length() && (closeArray[pos] == ' ' || closeArray[pos] == ',')) pos++;
+            if (pos >= closeArray.length()) break;
+            int valueStart = pos;
+            while (pos < closeArray.length() && closeArray[pos] != ',' && closeArray[pos] != ' ') pos++;
+            String valueStr = closeArray.substring(valueStart, pos);
+            if (!valueStr.equals("null") && valueStr.length() > 0) {
+              double value = valueStr.toDouble();
+              if (value > 0) {
+                if (value < minDay) minDay = value;
+                if (value > maxDay) maxDay = value;
+              }
+            }
+          }
+          if (maxDay > 0) {
+            *highDay = maxDay;
+            *lowDay = minDay;
+          }
+        }
+      }
+    } else {
+      http.end();
+    }
+  }
+
+  // Second API call: daily data for month and year high/low
+  url = "https://query1.finance.yahoo.com/v8/finance/chart/" + String(symbol) + "?interval=1d&range=1y";
+  if (!http.begin(client, url)) return;
+
+  http.setUserAgent("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36");
+  http.setTimeout(15000);
+  int httpCode = http.GET();
+  if (httpCode != HTTP_CODE_OK) {
+    http.end();
+    return;
+  }
+
+  String payload = http.getString();
+  http.end();
+
+  String arraySearch = "\"close\":[";
+  int arrayIdx = payload.indexOf(arraySearch);
+  if (arrayIdx == -1) return;
+
+  int arrayStart = arrayIdx + arraySearch.length();
+  int arrayEnd = payload.indexOf("]", arrayStart);
+  if (arrayEnd == -1) return;
+
+  String closeArray = payload.substring(arrayStart, arrayEnd);
+
+  // First pass: count values and find year high/low
+  double minYear = 1e18, maxYear = 0;
+  int valueCount = 0;
+  int pos = 0;
+
+  while (pos < closeArray.length()) {
+    while (pos < closeArray.length() && (closeArray[pos] == ' ' || closeArray[pos] == ',')) pos++;
+    if (pos >= closeArray.length()) break;
+    int valueStart = pos;
+    while (pos < closeArray.length() && closeArray[pos] != ',' && closeArray[pos] != ' ') pos++;
+    String valueStr = closeArray.substring(valueStart, pos);
+    if (!valueStr.equals("null") && valueStr.length() > 0) {
+      double value = valueStr.toDouble();
+      if (value > 0) {
+        valueCount++;
+        if (value < minYear) minYear = value;
+        if (value > maxYear) maxYear = value;
+      }
+    }
+  }
+
+  if (valueCount > 0) {
+    *highYear = maxYear;
+    *lowYear = minYear;
+
+    // Second pass: find month high/low (last 22 trading days)
+    int monthStart = valueCount > 22 ? valueCount - 22 : 0;
+    double minMonth = 1e18, maxMonth = 0;
+    int idx = 0;
+    pos = 0;
+    while (pos < closeArray.length()) {
+      while (pos < closeArray.length() && (closeArray[pos] == ' ' || closeArray[pos] == ',')) pos++;
+      if (pos >= closeArray.length()) break;
+      int valueStart = pos;
+      while (pos < closeArray.length() && closeArray[pos] != ',' && closeArray[pos] != ' ') pos++;
+      String valueStr = closeArray.substring(valueStart, pos);
+      if (!valueStr.equals("null") && valueStr.length() > 0) {
+        double value = valueStr.toDouble();
+        if (value > 0) {
+          if (idx >= monthStart) {
+            if (value < minMonth) minMonth = value;
+            if (value > maxMonth) maxMonth = value;
+          }
+          idx++;
+        }
+      }
+    }
+    *highMonth = maxMonth;
+    *lowMonth = minMonth;
+  }
+}
+
+void fetchAllHmData(int period) {
+  btcHmCount = goldHmCount = silverHmCount = 0;
+  btcHmLoaded = goldHmLoaded = silverHmLoaded = false;
+
+  fetchHmHistoryForSymbol("BTC-USD", btcHmHistory, &btcHmCount, period);
+  btcHmLoaded = btcHmCount > 0;
+
+  fetchHmHistoryForSymbol("GC=F", goldHmHistory, &goldHmCount, period);
+  goldHmLoaded = goldHmCount > 0;
+
+  fetchHmHistoryForSymbol("SI=F", silverHmHistory, &silverHmCount, period);
+  silverHmLoaded = silverHmCount > 0;
+
+  fetchHmHighLowForSymbol("BTC-USD", &btcHighDay, &btcLowDay, &btcHighMonth, &btcLowMonth, &btcHighYear, &btcLowYear);
+  fetchHmHighLowForSymbol("GC=F", &goldHighDay, &goldLowDay, &goldHighMonth, &goldLowMonth, &goldHighYear, &goldLowYear);
+  fetchHmHighLowForSymbol("SI=F", &silverHighDay, &silverLowDay, &silverHighMonth, &silverLowMonth, &silverHighYear, &silverLowYear);
+
+  hmLastFetch = millis();
+}
+
 void drawSparkline(int x, int y, int width, int height, double* history, bool loaded, uint16_t color) {
   if (!loaded) return;
 
@@ -437,6 +679,88 @@ void saveConfig() {
 	preferences.end();
 }
 
+int dayOfWeek(int year, int month, int day) {
+    if (month < 3) {
+        month += 12;
+        year--;
+    }
+    return (day + 13 * (month + 1) / 5 + year + year / 4 - year / 100 + year / 400) % 7;
+}
+
+bool isUSDST(int year, int month, int day, int hour) {
+    int springDOW = dayOfWeek(year, 3, 8);
+    int springStart = 8 + ((14 - springDOW) % 7);
+    
+    int fallDOW = dayOfWeek(year, 11, 1);
+    int fallEnd = 1 + ((14 - fallDOW) % 7);
+    
+    if (month < 3 || month > 11) return false;
+    if (month > 3 && month < 11) return true;
+    
+    if (month == 3) {
+        if (day < springStart) return false;
+        if (day > springStart) return true;
+        return hour >= 2;
+    }
+    
+    if (month == 11) {
+        if (day < fallEnd) return true;
+        if (day > fallEnd) return false;
+        return hour < 2;
+    }
+    
+    return false;
+}
+
+bool isUSMarketOpen() {
+    if (!timeSynced) return firstBoot;
+
+    time_t now = time(nullptr);
+    struct tm* utc = gmtime(&now);
+    
+    int utcHour = utc->tm_hour;
+    int utcMinute = utc->tm_min;
+    int year = utc->tm_year + 1900;
+    int month = utc->tm_mon + 1;
+    int day = utc->tm_mday;
+    int utcWday = utc->tm_wday;
+    
+    bool dst = isUSDST(year, month, day, utcHour);
+    int etOffset = dst ? -4 : -5;
+    
+    int etHour = utcHour + etOffset;
+    int etWday = utcWday;
+    
+    if (etHour < 0) {
+        etHour += 24;
+        etWday = (etWday + 6) % 7;
+    } else if (etHour >= 24) {
+        etHour -= 24;
+        etWday = (etWday + 1) % 7;
+    }
+    
+    if (etWday == 0 || etWday == 6) return false;
+    
+    if (etHour < 9 || etHour >= 16) return false;
+    if (etHour == 9 && utcMinute < 30) return false;
+    
+    return true;
+}
+
+void syncTime() {
+    configTime(0, 0, ntpServer);
+
+    int retries = 0;
+    while (time(nullptr) < 100000 && retries < 20) {
+        delay(500);
+        retries++;
+    }
+
+    if (time(nullptr) >= 100000) {
+        timeSynced = true;
+    }
+}
+
 void updatePrices() {
 	if (WiFi.status() != WL_CONNECTED) return;
 
@@ -444,6 +768,7 @@ void updatePrices() {
 	fetchPriceYahoo("GC=F", &goldPrice);
 	fetchPriceYahoo("SI=F", &silverPrice);
 
+	if (isUSMarketOpen()) {
 		for (int i = 0; i < MAX_STOCKS; i++) {
 			if (strlen(stockTickers[i]) > 0) {
 				fetchPriceFinnhub(stockTickers[i], &stockPrices[i]);
@@ -455,6 +780,11 @@ void updatePrices() {
 				fetchPriceYahoo(indexTickers[i], &indexPrices[i]);
 			}
 		}
+	}
+	
+	if (firstBoot) {
+		firstBoot = false;
+	}
 }
 
 void drawKeyboard(int y) {
@@ -714,6 +1044,42 @@ lcd.setTextColor(TFT_WHITE, TFT_ORANGE);
   lcd.drawString("BACK", 125, SCREEN_HEIGHT - 30);
 }
 
+void drawGearIcon(int cx, int cy, int radius, uint16_t color) {
+  for (int i = 0; i < 8; i++) {
+    float angle = i * 45.0 * DEG_TO_RAD;
+    float halfWidth = 0.35;
+    float cosA = cos(angle);
+    float sinA = sin(angle);
+    int x0 = cx + cosA * radius;
+    int y0 = cy + sinA * radius;
+    int x1 = cx + cosA * (radius + 6);
+    int y1 = cy + sinA * (radius + 6);
+    int dx = halfWidth * (-sinA) * radius;
+    int dy = halfWidth * cosA * radius;
+    lcd.fillTriangle(x0 - dx, y0 - dy, x1 - dx, y1 - dy, x1 + dx, y1 + dy, color);
+    lcd.fillTriangle(x0 - dx, y0 - dy, x1 + dx, y1 + dy, x0 + dx, y0 + dy, color);
+  }
+  lcd.fillCircle(cx, cy, radius, color);
+  lcd.fillCircle(cx, cy, radius - 3, TFT_ORANGE);
+}
+
+void drawFlipIcon(int cx, int cy, int radius, uint16_t color) {
+  lcd.setColor(color);
+  lcd.drawArc(cx, cy, radius, radius - 3, 60, 300);
+  float arrowAngle = 60.0 * DEG_TO_RAD;
+  int arrowX = cx + cos(arrowAngle) * radius;
+  int arrowY = cy - sin(arrowAngle) * radius;
+  float tangentAngle = arrowAngle - PI / 2;
+  int tipX = arrowX + cos(tangentAngle) * 6;
+  int tipY = arrowY - sin(tangentAngle) * 6;
+  lcd.fillTriangle(
+    arrowX + cos(tangentAngle) * 2 - sin(tangentAngle) * 4,
+    arrowY - sin(tangentAngle) * 2 - cos(tangentAngle) * 4,
+    arrowX + cos(tangentAngle) * 2 + sin(tangentAngle) * 4,
+    arrowY - sin(tangentAngle) * 2 + cos(tangentAngle) * 4,
+    tipX, tipY, color);
+}
+
 void drawDashboard() {
   lcd.fillScreen(TFT_BLACK);
 
@@ -724,6 +1090,7 @@ void drawDashboard() {
   lcd.drawString("HARD MONEY", 20, 22);
   lcd.drawString("STOCKS", 280, 22);
   lcd.drawString("INDICES", 540, 22);
+  drawFlipIcon(SCREEN_WIDTH - 32, 22, 12, TFT_WHITE);
 
   int col1X = 20;
   int col2X = 280;
@@ -777,8 +1144,13 @@ indexY += 65;
   String wifiStatus;
   if (wifiConnecting) {
     wifiStatus = "Connecting...";
+  } else if (WiFi.status() == WL_CONNECTED) {
+    wifiStatus = WiFi.SSID();
+    if (wifiStatus.length() > 20) {
+      wifiStatus = wifiStatus.substring(0, 17) + "...";
+    }
   } else {
-    wifiStatus = WiFi.status() == WL_CONNECTED ? "OK" : "OFFLINE";
+    wifiStatus = "OFFLINE";
   }
   lcd.drawString("WiFi: " + wifiStatus, 20, SCREEN_HEIGHT - 20);
 
@@ -791,8 +1163,7 @@ indexY += 65;
   lcd.setTextDatum(textdatum_t::middle_center);
   lcd.drawString(String(timeStr), SCREEN_WIDTH / 2, SCREEN_HEIGHT - 20);
 
-  lcd.fillSmoothRoundRect(SCREEN_WIDTH - 160, SCREEN_HEIGHT - 36, 140, 32, 6, TFT_DARKGRAY);
+drawGearIcon(SCREEN_WIDTH - 32, SCREEN_HEIGHT - 20, 9, TFT_WHITE);
-  lcd.drawString("CUSTOMIZE", SCREEN_WIDTH - 90, SCREEN_HEIGHT - 20);
 }
 
 void drawFullKeyboard(int y, bool showSpecials) {
@@ -1277,8 +1648,215 @@ void showRefreshingMessage() {
   lcd.setTextDatum(textdatum_t::middle_center);
   lcd.drawString("REFRESHING...", SCREEN_WIDTH / 2, SCREEN_HEIGHT - 20);
 
-  lcd.fillSmoothRoundRect(SCREEN_WIDTH - 160, SCREEN_HEIGHT - 36, 140, 32, 6, TFT_DARKGRAY);
+  drawGearIcon(SCREEN_WIDTH - 32, SCREEN_HEIGHT - 20, 9, TFT_WHITE);
-  lcd.drawString("CUSTOMIZE", SCREEN_WIDTH - 90, SCREEN_HEIGHT - 20);
+}
+
+void drawHardMoneyDetailScreen() {
+  lcd.fillScreen(TFT_BLACK);
+
+  lcd.fillSmoothRoundRect(0, 0, SCREEN_WIDTH, 45, 8, TFT_ORANGE);
+  lcd.setTextColor(TFT_WHITE, TFT_ORANGE);
+  lcd.setFont(&fonts::DejaVu24);
+  lcd.setTextDatum(textdatum_t::middle_center);
+  lcd.drawString("HARD MONEY", SCREEN_WIDTH / 2, 22);
+
+  int col1X = 50;
+  int col2X = 310;
+  int col3X = 570;
+  int colWidth = 180;
+
+  int headerY = 65;
+  int priceY = 90;
+
+  lcd.setTextColor(TFT_ORANGE, TFT_BLACK);
+  lcd.setFont(&fonts::Roboto_Thin_24);
+  lcd.setTextDatum(textdatum_t::middle_left);
+  lcd.drawString("BITCOIN", col1X, headerY);
+  lcd.drawString(formatPriceUS(btcPrice, 0), col1X, priceY);
+
+  lcd.setTextColor(TFT_GOLD, TFT_BLACK);
+  lcd.drawString("GOLD", col2X, headerY);
+  lcd.drawString(formatPriceUS(goldPrice, 2), col2X, priceY);
+
+  lcd.setTextColor(TFT_SILVER, TFT_BLACK);
+  lcd.drawString("SILVER", col3X, headerY);
+  lcd.drawString(formatPriceUS(silverPrice, 2), col3X, priceY);
+
+  int highLowY = priceY + 30;
+  int rowHeight = 22;
+
+  lcd.setFont(&fonts::DejaVu12);
+  lcd.setTextDatum(textdatum_t::middle_left);
+
+  lcd.setTextColor(TFT_GREEN, TFT_BLACK);
+  lcd.drawString("Day High:", col1X, highLowY);
+  lcd.drawString(formatPriceUS(btcHighDay, 0, true), col1X + 65, highLowY);
+  lcd.setTextColor(TFT_GREEN, TFT_BLACK);
+  lcd.drawString("Day High:", col2X, highLowY);
+  lcd.drawString(formatPriceUS(goldHighDay, 2, true), col2X + 65, highLowY);
+  lcd.drawString("Day High:", col3X, highLowY);
+  lcd.drawString(formatPriceUS(silverHighDay, 2, true), col3X + 65, highLowY);
+
+  lcd.setTextColor(0xF800, TFT_BLACK);
+  lcd.drawString("Day Low:", col1X, highLowY + rowHeight);
+  lcd.drawString(formatPriceUS(btcLowDay, 0, true), col1X + 65, highLowY + rowHeight);
+  lcd.drawString("Day Low:", col2X, highLowY + rowHeight);
+  lcd.drawString(formatPriceUS(goldLowDay, 2, true), col2X + 65, highLowY + rowHeight);
+  lcd.drawString("Day Low:", col3X, highLowY + rowHeight);
+  lcd.drawString(formatPriceUS(silverLowDay, 2, true), col3X + 65, highLowY + rowHeight);
+
+  lcd.setTextColor(TFT_GREEN, TFT_BLACK);
+  lcd.drawString("Mo High:", col1X, highLowY + rowHeight * 2);
+  lcd.drawString(formatPriceUS(btcHighMonth, 0, true), col1X + 65, highLowY + rowHeight * 2);
+  lcd.drawString("Mo High:", col2X, highLowY + rowHeight * 2);
+  lcd.drawString(formatPriceUS(goldHighMonth, 2, true), col2X + 65, highLowY + rowHeight * 2);
+  lcd.drawString("Mo High:", col3X, highLowY + rowHeight * 2);
+  lcd.drawString(formatPriceUS(silverHighMonth, 2, true), col3X + 65, highLowY + rowHeight * 2);
+
+  lcd.setTextColor(0xF800, TFT_BLACK);
+  lcd.drawString("Mo Low:", col1X, highLowY + rowHeight * 3);
+  lcd.drawString(formatPriceUS(btcLowMonth, 0, true), col1X + 65, highLowY + rowHeight * 3);
+  lcd.drawString("Mo Low:", col2X, highLowY + rowHeight * 3);
+  lcd.drawString(formatPriceUS(goldLowMonth, 2, true), col2X + 65, highLowY + rowHeight * 3);
+  lcd.drawString("Mo Low:", col3X, highLowY + rowHeight * 3);
+  lcd.drawString(formatPriceUS(silverLowMonth, 2, true), col3X + 65, highLowY + rowHeight * 3);
+
+  lcd.setTextColor(TFT_GREEN, TFT_BLACK);
+  lcd.drawString("Yr High:", col1X, highLowY + rowHeight * 4);
+  lcd.drawString(formatPriceUS(btcHighYear, 0, true), col1X + 65, highLowY + rowHeight * 4);
+  lcd.drawString("Yr High:", col2X, highLowY + rowHeight * 4);
+  lcd.drawString(formatPriceUS(goldHighYear, 2, true), col2X + 65, highLowY + rowHeight * 4);
+  lcd.drawString("Yr High:", col3X, highLowY + rowHeight * 4);
+  lcd.drawString(formatPriceUS(silverHighYear, 2, true), col3X + 65, highLowY + rowHeight * 4);
+
+  lcd.setTextColor(0xF800, TFT_BLACK);
+  lcd.drawString("Yr Low:", col1X, highLowY + rowHeight * 5);
+  lcd.drawString(formatPriceUS(btcLowYear, 0, true), col1X + 65, highLowY + rowHeight * 5);
+  lcd.drawString("Yr Low:", col2X, highLowY + rowHeight * 5);
+  lcd.drawString(formatPriceUS(goldLowYear, 2, true), col2X + 65, highLowY + rowHeight * 5);
+  lcd.drawString("Yr Low:", col3X, highLowY + rowHeight * 5);
+  lcd.drawString(formatPriceUS(silverLowYear, 2, true), col3X + 65, highLowY + rowHeight * 5);
+
+  int sparklineY = highLowY + rowHeight * 6 + 15;
+
+  const char* periodLabels[] = {"D", "W", "M", "Y", "A"};
+  int btnWidth = 50;
+  int btnHeight = 30;
+  int btnGap = 10;
+  int totalBtnWidth = 5 * btnWidth + 4 * btnGap;
+  int btnStartX = (SCREEN_WIDTH - totalBtnWidth) / 2;
+
+  for (int i = 0; i < 5; i++) {
+    int btnX = btnStartX + i * (btnWidth + btnGap);
+    uint16_t bgColor = (hmSparklinePeriod == i) ? TFT_ORANGE : TFT_DARKGRAY;
+    lcd.fillSmoothRoundRect(btnX, sparklineY, btnWidth, btnHeight, 6, bgColor);
+    lcd.setTextColor(TFT_WHITE, bgColor);
+    lcd.setFont(&fonts::DejaVu18);
+    lcd.setTextDatum(textdatum_t::middle_center);
+    lcd.drawString(periodLabels[i], btnX + btnWidth / 2, sparklineY + btnHeight / 2);
+  }
+
+  int sparklineDrawY = sparklineY + btnHeight + 15;
+  int sparklineHeight = 80;
+
+  if (btcHmLoaded && btcHmCount > 1) {
+    double minVal = btcHmHistory[0];
+    double maxVal = btcHmHistory[0];
+    for (int i = 0; i < btcHmCount; i++) {
+      if (btcHmHistory[i] < minVal) minVal = btcHmHistory[i];
+      if (btcHmHistory[i] > maxVal) maxVal = btcHmHistory[i];
+    }
+    double range = maxVal - minVal;
+    if (range < 1) range = 1;
+
+    for (int i = 0; i < btcHmCount - 1; i++) {
+      int x1 = col1X + (i * colWidth) / (btcHmCount - 1);
+      int x2 = col1X + ((i + 1) * colWidth) / (btcHmCount - 1);
+      int y1 = sparklineDrawY + sparklineHeight - (int)((btcHmHistory[i] - minVal) * sparklineHeight / range);
+      int y2 = sparklineDrawY + sparklineHeight - (int)((btcHmHistory[i + 1] - minVal) * sparklineHeight / range);
+      lcd.drawLine(x1, y1, x2, y2, TFT_ORANGE);
+    }
+  }
+
+  if (goldHmLoaded && goldHmCount > 1) {
+    double minVal = goldHmHistory[0];
+    double maxVal = goldHmHistory[0];
+    for (int i = 0; i < goldHmCount; i++) {
+      if (goldHmHistory[i] < minVal) minVal = goldHmHistory[i];
+      if (goldHmHistory[i] > maxVal) maxVal = goldHmHistory[i];
+    }
+    double range = maxVal - minVal;
+    if (range < 1) range = 1;
+
+    for (int i = 0; i < goldHmCount - 1; i++) {
+      int x1 = col2X + (i * colWidth) / (goldHmCount - 1);
+      int x2 = col2X + ((i + 1) * colWidth) / (goldHmCount - 1);
+      int y1 = sparklineDrawY + sparklineHeight - (int)((goldHmHistory[i] - minVal) * sparklineHeight / range);
+      int y2 = sparklineDrawY + sparklineHeight - (int)((goldHmHistory[i + 1] - minVal) * sparklineHeight / range);
+      lcd.drawLine(x1, y1, x2, y2, TFT_GOLD);
+    }
+  }
+
+  if (silverHmLoaded && silverHmCount > 1) {
+    double minVal = silverHmHistory[0];
+    double maxVal = silverHmHistory[0];
+    for (int i = 0; i < silverHmCount; i++) {
+      if (silverHmHistory[i] < minVal) minVal = silverHmHistory[i];
+      if (silverHmHistory[i] > maxVal) maxVal = silverHmHistory[i];
+    }
+    double range = maxVal - minVal;
+    if (range < 1) range = 1;
+
+    for (int i = 0; i < silverHmCount - 1; i++) {
+      int x1 = col3X + (i * colWidth) / (silverHmCount - 1);
+      int x2 = col3X + ((i + 1) * colWidth) / (silverHmCount - 1);
+      int y1 = sparklineDrawY + sparklineHeight - (int)((silverHmHistory[i] - minVal) * sparklineHeight / range);
+      int y2 = sparklineDrawY + sparklineHeight - (int)((silverHmHistory[i + 1] - minVal) * sparklineHeight / range);
+      lcd.drawLine(x1, y1, x2, y2, TFT_SILVER);
+    }
+  }
+
+  lcd.fillSmoothRoundRect(20, SCREEN_HEIGHT - 50, 150, 40, 8, TFT_GRAY);
+  lcd.setTextColor(TFT_WHITE, TFT_GRAY);
+  lcd.setFont(&fonts::DejaVu18);
+  lcd.setTextDatum(textdatum_t::middle_center);
+  lcd.drawString("BACK", 95, SCREEN_HEIGHT - 30);
+}
+
+bool handleHardMoneyTouch(int32_t x, int32_t y) {
+  if (x >= 20 && x < 170 && y >= SCREEN_HEIGHT - 50 && y < SCREEN_HEIGHT - 10) {
+    currentScreen = SCREEN_DASHBOARD;
+    needsRefresh = true;
+    return true;
+  }
+
+  int btnWidth = 50;
+  int btnHeight = 30;
+  int btnGap = 10;
+  int totalBtnWidth = 5 * btnWidth + 4 * btnGap;
+  int btnStartX = (SCREEN_WIDTH - totalBtnWidth) / 2;
+
+  int headerY = 55;
+  int priceY = 80;
+  int highLowY = priceY + 30;
+  int rowHeight = 22;
+  int sparklineY = highLowY + rowHeight * 6 + 15;
+
+  for (int i = 0; i < 5; i++) {
+    int btnX = btnStartX + i * (btnWidth + btnGap);
+    if (x >= btnX && x < btnX + btnWidth && y >= sparklineY && y < sparklineY + btnHeight) {
+      if (hmSparklinePeriod != i) {
+        hmSparklinePeriod = i;
+        btcHmLoaded = false;
+        goldHmLoaded = false;
+        silverHmLoaded = false;
+        hmNeedsRefresh = true;
+      }
+      return true;
+    }
+  }
+
+  return false;
 }
 
 void refreshDataAndShow() {
@@ -1290,7 +1868,24 @@ void refreshDataAndShow() {
 }
 
 bool handleDashboardTouch(int32_t x, int32_t y) {
-  if (x >= SCREEN_WIDTH - 160 && x < SCREEN_WIDTH - 20 && y >= SCREEN_HEIGHT - 36 && y < SCREEN_HEIGHT - 4) {
+  if (x >= SCREEN_WIDTH - 55 && x < SCREEN_WIDTH - 10 && y >= 5 && y < 40) {
+    displayFlipped = !displayFlipped;
+    preferences.begin("dashboard", false);
+    preferences.putBool("flipped", displayFlipped);
+    preferences.end();
+    lcd.setRotation(displayFlipped ? 2 : 0);
+    needsRefresh = true;
+    return true;
+  }
+
+  if (x >= 20 && x < 200 && y >= 0 && y < 45) {
+    currentScreen = SCREEN_HARD_MONEY_DETAIL;
+    hmSparklinePeriod = 2;
+    hmNeedsRefresh = true;
+    return true;
+  }
+
+  if (x >= SCREEN_WIDTH - 50 && x < SCREEN_WIDTH - 14 && y >= SCREEN_HEIGHT - 32 && y < SCREEN_HEIGHT - 8) {
     currentScreen = SCREEN_CUSTOMIZE_STOCKS;
     selectedStockSlot = -1;
     keyboardPos = 0;
@@ -1322,7 +1917,12 @@ void setup() {
 
   lcd.init();
   lcd.setBrightness(255);
-  lcd.setRotation(0);
+
+  preferences.begin("dashboard", true);
+  displayFlipped = preferences.getBool("flipped", false);
+  preferences.end();
+
+  lcd.setRotation(displayFlipped ? 2 : 0);
 
   lcd.fillScreen(TFT_WHITE);
   delay(250);
@@ -1420,6 +2020,9 @@ void loop() {
   case SCREEN_WIFI_PASSWORD:
     handleWifiPasswordTouch(x, y);
     break;
+  case SCREEN_HARD_MONEY_DETAIL:
+    handleHardMoneyTouch(x, y);
+    break;
   }
 
   if (!needsRefresh) {
@@ -1441,6 +2044,9 @@ void loop() {
       case SCREEN_WIFI_PASSWORD:
         drawWifiPasswordScreen();
         break;
+      case SCREEN_HARD_MONEY_DETAIL:
+        drawHardMoneyDetailScreen();
+        break;
     }
   }
 
@@ -1453,9 +2059,25 @@ void loop() {
     drawFooterCountdown();
   }
 
+  if (currentScreen == SCREEN_HARD_MONEY_DETAIL) {
+    if (hmNeedsRefresh || !btcHmLoaded || !goldHmLoaded || !silverHmLoaded) {
+      hmNeedsRefresh = false;
+      drawHardMoneyDetailScreen();
+      fetchAllHmData(hmSparklinePeriod);
+      drawHardMoneyDetailScreen();
+    }
+    if (millis() - hmLastFetch > HM_FETCH_INTERVAL) {
+      fetchAllHmData(hmSparklinePeriod);
+      drawHardMoneyDetailScreen();
+    }
+  }
+
   if (wifiConnecting) {
 		if (WiFi.status() == WL_CONNECTED) {
 			wifiConnecting = false;
+			if (!timeSynced) {
+				syncTime();
+			}
 			if (currentScreen == SCREEN_DASHBOARD) {
 				drawDashboard();
 			}