diff --git a/dist/chromium/content.js b/dist/chromium/content.js
index a137352..2817d11 100644
--- a/dist/chromium/content.js
+++ b/dist/chromium/content.js
@@ -25,6 +25,7 @@
   const TABLE_SEARCH_ID = "opportunities-extension-table-search";
   const STAGE_DASHBOARD_ID = "opportunities-extension-stage-dashboard";
   const FILTER_PREFERENCES_STORAGE_KEY = "opportunities-extension-filter-preferences";
+  const THEME_STORAGE_KEY = "opportunities-extension-theme";
   const OPPORTUNITY_DETAIL_URL = "https://eeho.fa.us2.oraclecloud.com/fscmUI/redwood/cx-sales/application/container/opportunities/opportunities-detail?puid=";
   const ACCOUNT_DETAIL_URL = "https://eeho.fa.us2.oraclecloud.com/fscmUI/redwood/cx-sales/application/container/accounts/accounts-detail?id=";
   const DEBUG_BODY_LIMIT = 12000;
@@ -53,7 +54,9 @@
   let tableSearch = "";
   let hasSavedCustomerFilter = false;
   let hasSavedOwnerFilter = false;
-  let stageDashboardAmounts = new Map(STAGE_OPTIONS.map((stage) => [stage, 0]));
+  let customerFilterInitialized = false;
+  let ownerFilterInitialized = false;
+  let stageDashboardAmounts = new Map([["TOTAL", 0], ...STAGE_OPTIONS.map((stage) => [stage, 0])]);
   let opportunitiesTableState = {
     items: [],
     status: "idle",
@@ -72,12 +75,12 @@
   const OPPORTUNITIES_COLUMNS = [
     { key: "name", label: "Name", value: (item) => item.Name, display: (item) => item.Name },
     { key: "optyNumber", label: "Opty Number", value: (item) => item.OptyNumber, display: (item) => item.OptyNumber },
-    { key: "winProbability", label: "Win Probability", value: (item) => getNestedValue(item, ["PrimaryRevenue", "WinProb"]), display: formatWinProbability },
     { key: "customer", label: "Customer", value: (item) => getNestedValue(item, ["CustomerAccount", "PartyUniqueName"]), display: (item) => getNestedValue(item, ["CustomerAccount", "PartyUniqueName"]) },
     { key: "owner", label: "Owner", value: getOwnerName, display: getOwnerName },
     { key: "revenue", label: "Amount", value: (item) => getNestedValue(item, ["PrimaryRevenue", "RevnAmount"]), display: formatRevenue },
     { key: "closeDate", label: "Close Date", value: (item) => item.EffectiveDate, display: (item) => formatOracleResponseDate(item.EffectiveDate) },
     { key: "stage", label: "Stage", value: (item) => item.ForecastGroup_c, display: (item) => item.ForecastGroup_c },
+    { key: "winProbability", label: "Win Probability", value: (item) => getNestedValue(item, ["PrimaryRevenue", "WinProb"]), display: formatWinProbability },
     { key: "status", label: "Status", value: (item) => item.StatusCode, display: (item) => item.StatusCode },
     { key: "lastUpdateDate", label: "Last Update Date", value: (item) => item.LastUpdateDate, display: (item) => formatOracleResponseDate(item.LastUpdateDate, true) }
   ];
@@ -175,6 +178,7 @@
     resetOpportunitiesTable();
     overlay.id = MODAL_ID;
     overlay.className = "opportunities-extension-modal";
+    overlay.setAttribute("data-theme", getSavedTheme());
     overlay.setAttribute("role", "dialog");
     overlay.setAttribute("aria-modal", "true");
     overlay.setAttribute("aria-labelledby", "opportunities-extension-title");
@@ -213,7 +217,20 @@
     closeButton.textContent = "X";
     closeButton.addEventListener("click", closeOpportunitiesModal);
 
-    header.append(titleBlock, closeButton);
+    const themeButton = document.createElement("button");
+    themeButton.type = "button";
+    themeButton.className = "opportunities-extension-icon-button opportunities-extension-theme-toggle";
+    themeButton.addEventListener("click", () => {
+      const nextTheme = overlay.getAttribute("data-theme") === "dark" ? "light" : "dark";
+      applyTheme(overlay, themeButton, nextTheme);
+    });
+    applyTheme(overlay, themeButton, overlay.getAttribute("data-theme"));
+
+    const headerActions = document.createElement("div");
+    headerActions.className = "opportunities-extension-header-actions";
+    headerActions.append(themeButton, closeButton);
+
+    header.append(titleBlock, headerActions);
 
     const body = document.createElement("main");
     body.className = "opportunities-extension-body";
@@ -241,6 +258,7 @@
     });
 
     select.addEventListener("change", () => {
+      resetCustomerAndOwnerFiltersForPeriod();
       saveFilterPreferences(select.value);
       requestOpportunitiesForPeriod(select.value);
     });
@@ -702,7 +720,9 @@
     tableSearch = "";
     hasSavedCustomerFilter = false;
     hasSavedOwnerFilter = false;
-    stageDashboardAmounts = new Map(STAGE_OPTIONS.map((stage) => [stage, 0]));
+    customerFilterInitialized = false;
+    ownerFilterInitialized = false;
+    stageDashboardAmounts = new Map([["TOTAL", 0], ...STAGE_OPTIONS.map((stage) => [stage, 0])]);
     opportunitiesTableState = {
       items: [],
       status: "idle",
@@ -712,6 +732,17 @@
     };
   }
 
+  function resetCustomerAndOwnerFiltersForPeriod() {
+    selectedCustomerKeys = new Set();
+    selectedOwnerKeys = new Set();
+    customerSearch = "";
+    ownerSearch = "";
+    hasSavedCustomerFilter = false;
+    hasSavedOwnerFilter = false;
+    customerFilterInitialized = false;
+    ownerFilterInitialized = false;
+  }
+
   function restoreFilterPreferences(select) {
     try {
       const rawPreferences = localStorage.getItem(FILTER_PREFERENCES_STORAGE_KEY);
@@ -739,11 +770,13 @@
       if (Array.isArray(preferences.customerKeys)) {
         selectedCustomerKeys = new Set(preferences.customerKeys.map(String));
         hasSavedCustomerFilter = true;
+        customerFilterInitialized = true;
       }
 
       if (Array.isArray(preferences.ownerKeys)) {
         selectedOwnerKeys = new Set(preferences.ownerKeys.map(String));
         hasSavedOwnerFilter = true;
+        ownerFilterInitialized = true;
       }
 
       customerSearch = typeof preferences.customerSearch === "string" ? preferences.customerSearch : "";
@@ -853,11 +886,20 @@
             cell.append(createStageBadge(column.display(item)));
           } else if (column.key === "status") {
             cell.append(createStatusBadge(column.display(item)));
-          } else if (column.key === "optyNumber") {
-            cell.append(createDetailLink(
+          } else if (column.key === "name" || column.key === "optyNumber") {
+            const opportunityLink = createDetailLink(
               column.display(item),
               item.OptyNumber ? `${OPPORTUNITY_DETAIL_URL}${encodeURIComponent(item.OptyNumber)}` : ""
-            ));
+            );
+
+            if (column.key === "optyNumber" && item.OptyNumber) {
+              const opportunityCellContent = document.createElement("span");
+              opportunityCellContent.className = "opportunities-extension-opty-number-content";
+              opportunityCellContent.append(opportunityLink, createCopyOpportunityButton(item.OptyNumber));
+              cell.append(opportunityCellContent);
+            } else {
+              cell.append(opportunityLink);
+            }
           } else if (column.key === "customer") {
             cell.append(createDetailLink(
               column.display(item),
@@ -888,6 +930,24 @@
 
     dashboard.textContent = "";
 
+    const totalCard = document.createElement("section");
+    const totalLabel = document.createElement("span");
+    const totalValue = document.createElement("strong");
+
+    totalCard.className = "opportunities-extension-stage-dashboard-card opportunities-extension-total-dashboard-card";
+    totalCard.setAttribute("data-stage", "TOTAL");
+    totalLabel.textContent = "Total Opportunities";
+    totalValue.className = "opportunities-extension-stage-dashboard-value";
+    totalValue.setAttribute("aria-label", "Total opportunities");
+    animateStageDashboardValue(
+      totalValue,
+      "TOTAL",
+      items.length,
+      (amount) => Math.round(amount).toLocaleString()
+    );
+    totalCard.append(totalLabel, totalValue);
+    dashboard.append(totalCard);
+
     STAGE_OPTIONS.forEach((stage) => {
       const stageItems = items.filter((item) => item.ForecastGroup_c === stage);
       const amount = stageItems.reduce((total, item) => {
@@ -1121,20 +1181,18 @@
 
   function resetCustomerFilter(items) {
     const customerOptions = getCustomerOptions(items);
-    selectedCustomerKeys = hasSavedCustomerFilter
-      ? new Set(customerOptions
-        .map((customer) => customer.key)
-        .filter((key) => selectedCustomerKeys.has(key)))
-      : new Set(customerOptions.map((customer) => customer.key));
+    if (!customerFilterInitialized) {
+      selectedCustomerKeys = new Set(customerOptions.map((customer) => customer.key));
+      customerFilterInitialized = true;
+    }
   }
 
   function resetOwnerFilter(items) {
     const ownerOptions = getOwnerOptions(items);
-    selectedOwnerKeys = hasSavedOwnerFilter
-      ? new Set(ownerOptions
-        .map((owner) => owner.key)
-        .filter((key) => selectedOwnerKeys.has(key)))
-      : new Set(ownerOptions.map((owner) => owner.key));
+    if (!ownerFilterInitialized) {
+      selectedOwnerKeys = new Set(ownerOptions.map((owner) => owner.key));
+      ownerFilterInitialized = true;
+    }
   }
 
   function renderCustomerFilter() {
@@ -1468,6 +1526,76 @@
     return link;
   }
 
+  function createCopyOpportunityButton(optyNumber) {
+    const button = document.createElement("button");
+    const icon = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+
+    button.type = "button";
+    button.className = "opportunities-extension-copy-button";
+    button.setAttribute("aria-label", `Copy opportunity number ${optyNumber}`);
+    button.title = "Copy opportunity number";
+    button.addEventListener("click", (event) => {
+      event.preventDefault();
+      event.stopPropagation();
+      copyOpportunityNumber(String(optyNumber));
+    });
+
+    icon.setAttribute("viewBox", "0 0 24 24");
+    icon.setAttribute("aria-hidden", "true");
+    path.setAttribute("d", "M8 8V5.5A2.5 2.5 0 0 1 10.5 3h8A2.5 2.5 0 0 1 21 5.5v8a2.5 2.5 0 0 1-2.5 2.5H16v2.5a2.5 2.5 0 0 1-2.5 2.5h-8A2.5 2.5 0 0 1 3 18.5v-8A2.5 2.5 0 0 1 5.5 8H8zm2 0h3.5A2.5 2.5 0 0 1 16 10.5v3.5h2.5a.5.5 0 0 0 .5-.5v-8a.5.5 0 0 0-.5-.5h-8a.5.5 0 0 0-.5.5V8zm3.5 2h-8a.5.5 0 0 0-.5.5v8a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5v-8a.5.5 0 0 0-.5-.5z");
+    icon.append(path);
+    button.append(icon);
+    return button;
+  }
+
+  async function copyOpportunityNumber(optyNumber) {
+    try {
+      if (navigator.clipboard && navigator.clipboard.writeText) {
+        await navigator.clipboard.writeText(optyNumber);
+      } else {
+        const input = document.createElement("textarea");
+        input.value = optyNumber;
+        input.setAttribute("readonly", "true");
+        input.style.position = "fixed";
+        input.style.opacity = "0";
+        document.body.append(input);
+        input.select();
+        document.execCommand("copy");
+        input.remove();
+      }
+
+      showCopyConfirmation(`Opty Number ${optyNumber} copied.`);
+    } catch (error) {
+      showCopyConfirmation("Unable to copy opportunity number.", true);
+    }
+  }
+
+  function showCopyConfirmation(message, isError = false) {
+    const modal = document.getElementById(MODAL_ID);
+
+    if (!modal) {
+      return;
+    }
+
+    let toast = modal.querySelector(".opportunities-extension-copy-toast");
+
+    if (!toast) {
+      toast = document.createElement("div");
+      toast.className = "opportunities-extension-copy-toast";
+      toast.setAttribute("role", "status");
+      modal.append(toast);
+    }
+
+    toast.classList.toggle("opportunities-extension-copy-toast-error", isError);
+    toast.textContent = message;
+    toast.hidden = false;
+    window.clearTimeout(toast.copyTimeout);
+    toast.copyTimeout = window.setTimeout(() => {
+      toast.hidden = true;
+    }, 2400);
+  }
+
   function createStageBadge(stage) {
     const badge = document.createElement("span");
     const normalizedStage = typeof stage === "string" ? stage.toUpperCase() : "";
@@ -1993,6 +2121,53 @@
     document.documentElement.classList.remove("opportunities-extension-scroll-lock");
   }
 
+  function getSavedTheme() {
+    try {
+      return localStorage.getItem(THEME_STORAGE_KEY) === "dark" ? "dark" : "light";
+    } catch (error) {
+      return "light";
+    }
+  }
+
+  function applyTheme(modal, button, theme) {
+    const isDarkTheme = theme === "dark";
+
+    modal.setAttribute("data-theme", isDarkTheme ? "dark" : "light");
+    button.textContent = "";
+    button.setAttribute("aria-label", isDarkTheme ? "Ativar modo claro" : "Ativar modo escuro");
+    button.title = isDarkTheme ? "Light mode" : "Dark mode";
+    button.append(createThemeIcon(isDarkTheme ? "sun" : "moon"));
+
+    try {
+      localStorage.setItem(THEME_STORAGE_KEY, isDarkTheme ? "dark" : "light");
+    } catch (error) {
+      // Continue with the selected theme when browser storage is unavailable.
+    }
+  }
+
+  function createThemeIcon(iconName) {
+    const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+
+    svg.setAttribute("viewBox", "0 0 24 24");
+    svg.setAttribute("aria-hidden", "true");
+    svg.setAttribute("focusable", "false");
+
+    if (iconName === "sun") {
+      path.setAttribute("d", "M12 3V1m0 22v-2m9-9h2M1 12h2m15.36 6.36 1.42 1.42M4.22 4.22l1.42 1.42m12.72 0 1.42-1.42M4.22 19.78l1.42-1.42M16.5 12a4.5 4.5 0 1 1-9 0 4.5 4.5 0 0 1 9 0Z");
+    } else {
+      path.setAttribute("d", "M20.5 14.2A8.5 8.5 0 0 1 9.8 3.5a8.5 8.5 0 1 0 10.7 10.7Z");
+    }
+
+    path.setAttribute("fill", "none");
+    path.setAttribute("stroke", "currentColor");
+    path.setAttribute("stroke-linecap", "round");
+    path.setAttribute("stroke-linejoin", "round");
+    path.setAttribute("stroke-width", "1.8");
+    svg.append(path);
+    return svg;
+  }
+
   function ensureEscapeKeyHandler() {
     if (window[ESCAPE_LISTENER_KEY]) {
       return;
@@ -2178,6 +2353,18 @@
         cursor: pointer;
       }
 
+      .opportunities-extension-header-actions {
+        display: inline-flex;
+        align-items: center;
+        gap: 6px;
+      }
+
+      .opportunities-extension-icon-button svg {
+        width: 18px;
+        height: 18px;
+        vertical-align: middle;
+      }
+
       .opportunities-extension-icon-button:hover,
       .opportunities-extension-icon-button:focus {
         border-color: #b8b2ad;
@@ -2223,7 +2410,7 @@
 
       .opportunities-extension-stage-dashboard {
         display: grid;
-        grid-template-columns: repeat(5, minmax(0, 1fr));
+        grid-template-columns: repeat(6, minmax(0, 1fr));
         gap: 12px;
       }
 
@@ -2259,6 +2446,10 @@
         border-top-color: #008aa6;
       }
 
+      .opportunities-extension-total-dashboard-card {
+        border-top-color: #00758f;
+      }
+
       .opportunities-extension-stage-dashboard-card[data-stage="PIPELINE"] {
         border-top-color: #6f6863;
       }
@@ -2724,23 +2915,23 @@
       }
 
       .opportunities-extension-table th:nth-child(3) {
-        width: 8%;
-      }
-
-      .opportunities-extension-table th:nth-child(4) {
         width: 17%;
       }
 
-      .opportunities-extension-table th:nth-child(5) {
+      .opportunities-extension-table th:nth-child(4) {
         width: 12%;
       }
 
+      .opportunities-extension-table th:nth-child(5) {
+        width: 9%;
+      }
+
       .opportunities-extension-table th:nth-child(6) {
         width: 9%;
       }
 
       .opportunities-extension-table th:nth-child(7) {
-        width: 9%;
+        width: 8%;
       }
 
       .opportunities-extension-table th:nth-child(8) {
@@ -2756,7 +2947,7 @@
       }
 
       .opportunities-extension-table td:nth-child(2),
-      .opportunities-extension-table td:nth-child(3),
+      .opportunities-extension-table td:nth-child(5),
       .opportunities-extension-table td:nth-child(6),
       .opportunities-extension-table td:nth-child(7),
       .opportunities-extension-table td:nth-child(8),
@@ -2784,6 +2975,64 @@
         color: #004f63;
       }
 
+      .opportunities-extension-opty-number-content {
+        display: inline-flex;
+        align-items: center;
+        gap: 6px;
+        max-width: 100%;
+      }
+
+      .opportunities-extension-copy-button {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        flex: 0 0 auto;
+        width: 24px;
+        height: 24px;
+        padding: 3px;
+        border: 0;
+        border-radius: 3px;
+        background: transparent;
+        color: #00758f;
+        cursor: pointer;
+      }
+
+      .opportunities-extension-copy-button svg {
+        width: 16px;
+        height: 16px;
+        fill: currentColor;
+      }
+
+      .opportunities-extension-copy-button:hover,
+      .opportunities-extension-copy-button:focus-visible {
+        background: #e8f4f6;
+        color: #004f63;
+        outline: none;
+      }
+
+      .opportunities-extension-copy-toast {
+        position: fixed;
+        right: 28px;
+        bottom: 28px;
+        z-index: 3;
+        max-width: min(360px, calc(100vw - 56px));
+        padding: 12px 16px;
+        border-radius: 4px;
+        background: #2f6f18;
+        box-shadow: 0 4px 12px rgba(0, 0, 0, .18);
+        color: #ffffff;
+        font-size: 13px;
+        font-weight: 700;
+      }
+
+      .opportunities-extension-copy-toast-error {
+        background: #a52b1c;
+      }
+
+      .opportunities-extension-copy-toast[hidden] {
+        display: none !important;
+      }
+
       .opportunities-extension-stage-badge {
         display: inline-flex;
         align-items: center;
@@ -3079,6 +3328,247 @@
         font-size: 13px;
       }
 
+      .opportunities-extension-modal[data-theme="dark"] {
+        background: #1f1f1f;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-shell,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-body {
+        background: #1f1f1f;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header {
+        border-bottom-color: #4e4a46;
+        background:
+          linear-gradient(90deg, #a8795d 0 11%, #dd5a47 11% 23%, #876e9b 23% 36%, #00a6be 36% 51%, #dfbd76 51% 63%, transparent 63% 100%) top left / 100% 6px no-repeat,
+          #292827;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header h1,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-value,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-field,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field {
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header p,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card span,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-empty,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel p,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-empty {
+        color: #c9c5c1;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-form,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-surface,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-panel,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item[open] {
+        border-color: #4e4a46;
+        background: #292827;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-search,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field input,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-field select,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button {
+        border-color: #6a6560;
+        background: #333130;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger::after {
+        border-top-color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-select-wrap::after {
+        border-top-color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger:disabled {
+        background: #292827;
+        color: #918b86;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-search::placeholder,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field input::placeholder {
+        color: #b5b0ab;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-select-all,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-option,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-heading,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item pre,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel h2 {
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-select-all,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table th {
+        border-bottom-color: #4e4a46;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-option:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table tbody tr:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-sort-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button:focus {
+        background: #3b3937;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table thead,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table th {
+        background: #333130;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table td {
+        border-bottom-color: #3f3c39;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table a,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button {
+        color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table a:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button:focus-visible {
+        background: #1d4e55;
+        color: #91e4ed;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="SQL"] {
+        color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="PIPELINE"] {
+        color: #d1cbc6;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="UPSIDE"] {
+        color: #ffbf62;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="FORECAST"] {
+        color: #d2b7e9;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="WON"] {
+        color: #9bd46a;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="SQL"] {
+        border-top-color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-total-dashboard-card {
+        border-top-color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="PIPELINE"] {
+        border-top-color: #c0b9b3;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="UPSIDE"] {
+        border-top-color: #ffb84d;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="FORECAST"] {
+        border-top-color: #cba7e7;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="WON"] {
+        border-top-color: #92cf5b;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="SQL"] {
+        border-color: #008aa6;
+        background: #008aa6;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="PIPELINE"] {
+        border-color: #6f6863;
+        background: #6f6863;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="UPSIDE"] {
+        border-color: #b96e00;
+        background: #b96e00;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="FORECAST"] {
+        border-color: #755b8b;
+        background: #755b8b;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="WON"] {
+        border-color: #4b7f22;
+        background: #4b7f22;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="OPEN"] {
+        color: #69c985;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="CLOSED"] {
+        color: #c3cad3;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="LOST"] {
+        color: #ff9d94;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="WON"] {
+        color: #83bfff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="OPEN"] {
+        border-color: #197a3d;
+        background: #197a3d;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="CLOSED"] {
+        border-color: #4b5563;
+        background: #4b5563;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="LOST"] {
+        border-color: #b13b34;
+        background: #b13b34;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="WON"] {
+        border-color: #1f5f99;
+        background: #1f5f99;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item {
+        border-color: #4e4a46;
+        background: #252423;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button {
+        color: #f6f4f2;
+      }
+
       @media (max-width: 700px) {
         .opportunities-extension-header {
           padding: 24px 20px 18px;
diff --git a/dist/firefox/content.js b/dist/firefox/content.js
index a137352..2817d11 100644
--- a/dist/firefox/content.js
+++ b/dist/firefox/content.js
@@ -25,6 +25,7 @@
   const TABLE_SEARCH_ID = "opportunities-extension-table-search";
   const STAGE_DASHBOARD_ID = "opportunities-extension-stage-dashboard";
   const FILTER_PREFERENCES_STORAGE_KEY = "opportunities-extension-filter-preferences";
+  const THEME_STORAGE_KEY = "opportunities-extension-theme";
   const OPPORTUNITY_DETAIL_URL = "https://eeho.fa.us2.oraclecloud.com/fscmUI/redwood/cx-sales/application/container/opportunities/opportunities-detail?puid=";
   const ACCOUNT_DETAIL_URL = "https://eeho.fa.us2.oraclecloud.com/fscmUI/redwood/cx-sales/application/container/accounts/accounts-detail?id=";
   const DEBUG_BODY_LIMIT = 12000;
@@ -53,7 +54,9 @@
   let tableSearch = "";
   let hasSavedCustomerFilter = false;
   let hasSavedOwnerFilter = false;
-  let stageDashboardAmounts = new Map(STAGE_OPTIONS.map((stage) => [stage, 0]));
+  let customerFilterInitialized = false;
+  let ownerFilterInitialized = false;
+  let stageDashboardAmounts = new Map([["TOTAL", 0], ...STAGE_OPTIONS.map((stage) => [stage, 0])]);
   let opportunitiesTableState = {
     items: [],
     status: "idle",
@@ -72,12 +75,12 @@
   const OPPORTUNITIES_COLUMNS = [
     { key: "name", label: "Name", value: (item) => item.Name, display: (item) => item.Name },
     { key: "optyNumber", label: "Opty Number", value: (item) => item.OptyNumber, display: (item) => item.OptyNumber },
-    { key: "winProbability", label: "Win Probability", value: (item) => getNestedValue(item, ["PrimaryRevenue", "WinProb"]), display: formatWinProbability },
     { key: "customer", label: "Customer", value: (item) => getNestedValue(item, ["CustomerAccount", "PartyUniqueName"]), display: (item) => getNestedValue(item, ["CustomerAccount", "PartyUniqueName"]) },
     { key: "owner", label: "Owner", value: getOwnerName, display: getOwnerName },
     { key: "revenue", label: "Amount", value: (item) => getNestedValue(item, ["PrimaryRevenue", "RevnAmount"]), display: formatRevenue },
     { key: "closeDate", label: "Close Date", value: (item) => item.EffectiveDate, display: (item) => formatOracleResponseDate(item.EffectiveDate) },
     { key: "stage", label: "Stage", value: (item) => item.ForecastGroup_c, display: (item) => item.ForecastGroup_c },
+    { key: "winProbability", label: "Win Probability", value: (item) => getNestedValue(item, ["PrimaryRevenue", "WinProb"]), display: formatWinProbability },
     { key: "status", label: "Status", value: (item) => item.StatusCode, display: (item) => item.StatusCode },
     { key: "lastUpdateDate", label: "Last Update Date", value: (item) => item.LastUpdateDate, display: (item) => formatOracleResponseDate(item.LastUpdateDate, true) }
   ];
@@ -175,6 +178,7 @@
     resetOpportunitiesTable();
     overlay.id = MODAL_ID;
     overlay.className = "opportunities-extension-modal";
+    overlay.setAttribute("data-theme", getSavedTheme());
     overlay.setAttribute("role", "dialog");
     overlay.setAttribute("aria-modal", "true");
     overlay.setAttribute("aria-labelledby", "opportunities-extension-title");
@@ -213,7 +217,20 @@
     closeButton.textContent = "X";
     closeButton.addEventListener("click", closeOpportunitiesModal);
 
-    header.append(titleBlock, closeButton);
+    const themeButton = document.createElement("button");
+    themeButton.type = "button";
+    themeButton.className = "opportunities-extension-icon-button opportunities-extension-theme-toggle";
+    themeButton.addEventListener("click", () => {
+      const nextTheme = overlay.getAttribute("data-theme") === "dark" ? "light" : "dark";
+      applyTheme(overlay, themeButton, nextTheme);
+    });
+    applyTheme(overlay, themeButton, overlay.getAttribute("data-theme"));
+
+    const headerActions = document.createElement("div");
+    headerActions.className = "opportunities-extension-header-actions";
+    headerActions.append(themeButton, closeButton);
+
+    header.append(titleBlock, headerActions);
 
     const body = document.createElement("main");
     body.className = "opportunities-extension-body";
@@ -241,6 +258,7 @@
     });
 
     select.addEventListener("change", () => {
+      resetCustomerAndOwnerFiltersForPeriod();
       saveFilterPreferences(select.value);
       requestOpportunitiesForPeriod(select.value);
     });
@@ -702,7 +720,9 @@
     tableSearch = "";
     hasSavedCustomerFilter = false;
     hasSavedOwnerFilter = false;
-    stageDashboardAmounts = new Map(STAGE_OPTIONS.map((stage) => [stage, 0]));
+    customerFilterInitialized = false;
+    ownerFilterInitialized = false;
+    stageDashboardAmounts = new Map([["TOTAL", 0], ...STAGE_OPTIONS.map((stage) => [stage, 0])]);
     opportunitiesTableState = {
       items: [],
       status: "idle",
@@ -712,6 +732,17 @@
     };
   }
 
+  function resetCustomerAndOwnerFiltersForPeriod() {
+    selectedCustomerKeys = new Set();
+    selectedOwnerKeys = new Set();
+    customerSearch = "";
+    ownerSearch = "";
+    hasSavedCustomerFilter = false;
+    hasSavedOwnerFilter = false;
+    customerFilterInitialized = false;
+    ownerFilterInitialized = false;
+  }
+
   function restoreFilterPreferences(select) {
     try {
       const rawPreferences = localStorage.getItem(FILTER_PREFERENCES_STORAGE_KEY);
@@ -739,11 +770,13 @@
       if (Array.isArray(preferences.customerKeys)) {
         selectedCustomerKeys = new Set(preferences.customerKeys.map(String));
         hasSavedCustomerFilter = true;
+        customerFilterInitialized = true;
       }
 
       if (Array.isArray(preferences.ownerKeys)) {
         selectedOwnerKeys = new Set(preferences.ownerKeys.map(String));
         hasSavedOwnerFilter = true;
+        ownerFilterInitialized = true;
       }
 
       customerSearch = typeof preferences.customerSearch === "string" ? preferences.customerSearch : "";
@@ -853,11 +886,20 @@
             cell.append(createStageBadge(column.display(item)));
           } else if (column.key === "status") {
             cell.append(createStatusBadge(column.display(item)));
-          } else if (column.key === "optyNumber") {
-            cell.append(createDetailLink(
+          } else if (column.key === "name" || column.key === "optyNumber") {
+            const opportunityLink = createDetailLink(
               column.display(item),
               item.OptyNumber ? `${OPPORTUNITY_DETAIL_URL}${encodeURIComponent(item.OptyNumber)}` : ""
-            ));
+            );
+
+            if (column.key === "optyNumber" && item.OptyNumber) {
+              const opportunityCellContent = document.createElement("span");
+              opportunityCellContent.className = "opportunities-extension-opty-number-content";
+              opportunityCellContent.append(opportunityLink, createCopyOpportunityButton(item.OptyNumber));
+              cell.append(opportunityCellContent);
+            } else {
+              cell.append(opportunityLink);
+            }
           } else if (column.key === "customer") {
             cell.append(createDetailLink(
               column.display(item),
@@ -888,6 +930,24 @@
 
     dashboard.textContent = "";
 
+    const totalCard = document.createElement("section");
+    const totalLabel = document.createElement("span");
+    const totalValue = document.createElement("strong");
+
+    totalCard.className = "opportunities-extension-stage-dashboard-card opportunities-extension-total-dashboard-card";
+    totalCard.setAttribute("data-stage", "TOTAL");
+    totalLabel.textContent = "Total Opportunities";
+    totalValue.className = "opportunities-extension-stage-dashboard-value";
+    totalValue.setAttribute("aria-label", "Total opportunities");
+    animateStageDashboardValue(
+      totalValue,
+      "TOTAL",
+      items.length,
+      (amount) => Math.round(amount).toLocaleString()
+    );
+    totalCard.append(totalLabel, totalValue);
+    dashboard.append(totalCard);
+
     STAGE_OPTIONS.forEach((stage) => {
       const stageItems = items.filter((item) => item.ForecastGroup_c === stage);
       const amount = stageItems.reduce((total, item) => {
@@ -1121,20 +1181,18 @@
 
   function resetCustomerFilter(items) {
     const customerOptions = getCustomerOptions(items);
-    selectedCustomerKeys = hasSavedCustomerFilter
-      ? new Set(customerOptions
-        .map((customer) => customer.key)
-        .filter((key) => selectedCustomerKeys.has(key)))
-      : new Set(customerOptions.map((customer) => customer.key));
+    if (!customerFilterInitialized) {
+      selectedCustomerKeys = new Set(customerOptions.map((customer) => customer.key));
+      customerFilterInitialized = true;
+    }
   }
 
   function resetOwnerFilter(items) {
     const ownerOptions = getOwnerOptions(items);
-    selectedOwnerKeys = hasSavedOwnerFilter
-      ? new Set(ownerOptions
-        .map((owner) => owner.key)
-        .filter((key) => selectedOwnerKeys.has(key)))
-      : new Set(ownerOptions.map((owner) => owner.key));
+    if (!ownerFilterInitialized) {
+      selectedOwnerKeys = new Set(ownerOptions.map((owner) => owner.key));
+      ownerFilterInitialized = true;
+    }
   }
 
   function renderCustomerFilter() {
@@ -1468,6 +1526,76 @@
     return link;
   }
 
+  function createCopyOpportunityButton(optyNumber) {
+    const button = document.createElement("button");
+    const icon = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+
+    button.type = "button";
+    button.className = "opportunities-extension-copy-button";
+    button.setAttribute("aria-label", `Copy opportunity number ${optyNumber}`);
+    button.title = "Copy opportunity number";
+    button.addEventListener("click", (event) => {
+      event.preventDefault();
+      event.stopPropagation();
+      copyOpportunityNumber(String(optyNumber));
+    });
+
+    icon.setAttribute("viewBox", "0 0 24 24");
+    icon.setAttribute("aria-hidden", "true");
+    path.setAttribute("d", "M8 8V5.5A2.5 2.5 0 0 1 10.5 3h8A2.5 2.5 0 0 1 21 5.5v8a2.5 2.5 0 0 1-2.5 2.5H16v2.5a2.5 2.5 0 0 1-2.5 2.5h-8A2.5 2.5 0 0 1 3 18.5v-8A2.5 2.5 0 0 1 5.5 8H8zm2 0h3.5A2.5 2.5 0 0 1 16 10.5v3.5h2.5a.5.5 0 0 0 .5-.5v-8a.5.5 0 0 0-.5-.5h-8a.5.5 0 0 0-.5.5V8zm3.5 2h-8a.5.5 0 0 0-.5.5v8a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5v-8a.5.5 0 0 0-.5-.5z");
+    icon.append(path);
+    button.append(icon);
+    return button;
+  }
+
+  async function copyOpportunityNumber(optyNumber) {
+    try {
+      if (navigator.clipboard && navigator.clipboard.writeText) {
+        await navigator.clipboard.writeText(optyNumber);
+      } else {
+        const input = document.createElement("textarea");
+        input.value = optyNumber;
+        input.setAttribute("readonly", "true");
+        input.style.position = "fixed";
+        input.style.opacity = "0";
+        document.body.append(input);
+        input.select();
+        document.execCommand("copy");
+        input.remove();
+      }
+
+      showCopyConfirmation(`Opty Number ${optyNumber} copied.`);
+    } catch (error) {
+      showCopyConfirmation("Unable to copy opportunity number.", true);
+    }
+  }
+
+  function showCopyConfirmation(message, isError = false) {
+    const modal = document.getElementById(MODAL_ID);
+
+    if (!modal) {
+      return;
+    }
+
+    let toast = modal.querySelector(".opportunities-extension-copy-toast");
+
+    if (!toast) {
+      toast = document.createElement("div");
+      toast.className = "opportunities-extension-copy-toast";
+      toast.setAttribute("role", "status");
+      modal.append(toast);
+    }
+
+    toast.classList.toggle("opportunities-extension-copy-toast-error", isError);
+    toast.textContent = message;
+    toast.hidden = false;
+    window.clearTimeout(toast.copyTimeout);
+    toast.copyTimeout = window.setTimeout(() => {
+      toast.hidden = true;
+    }, 2400);
+  }
+
   function createStageBadge(stage) {
     const badge = document.createElement("span");
     const normalizedStage = typeof stage === "string" ? stage.toUpperCase() : "";
@@ -1993,6 +2121,53 @@
     document.documentElement.classList.remove("opportunities-extension-scroll-lock");
   }
 
+  function getSavedTheme() {
+    try {
+      return localStorage.getItem(THEME_STORAGE_KEY) === "dark" ? "dark" : "light";
+    } catch (error) {
+      return "light";
+    }
+  }
+
+  function applyTheme(modal, button, theme) {
+    const isDarkTheme = theme === "dark";
+
+    modal.setAttribute("data-theme", isDarkTheme ? "dark" : "light");
+    button.textContent = "";
+    button.setAttribute("aria-label", isDarkTheme ? "Ativar modo claro" : "Ativar modo escuro");
+    button.title = isDarkTheme ? "Light mode" : "Dark mode";
+    button.append(createThemeIcon(isDarkTheme ? "sun" : "moon"));
+
+    try {
+      localStorage.setItem(THEME_STORAGE_KEY, isDarkTheme ? "dark" : "light");
+    } catch (error) {
+      // Continue with the selected theme when browser storage is unavailable.
+    }
+  }
+
+  function createThemeIcon(iconName) {
+    const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+
+    svg.setAttribute("viewBox", "0 0 24 24");
+    svg.setAttribute("aria-hidden", "true");
+    svg.setAttribute("focusable", "false");
+
+    if (iconName === "sun") {
+      path.setAttribute("d", "M12 3V1m0 22v-2m9-9h2M1 12h2m15.36 6.36 1.42 1.42M4.22 4.22l1.42 1.42m12.72 0 1.42-1.42M4.22 19.78l1.42-1.42M16.5 12a4.5 4.5 0 1 1-9 0 4.5 4.5 0 0 1 9 0Z");
+    } else {
+      path.setAttribute("d", "M20.5 14.2A8.5 8.5 0 0 1 9.8 3.5a8.5 8.5 0 1 0 10.7 10.7Z");
+    }
+
+    path.setAttribute("fill", "none");
+    path.setAttribute("stroke", "currentColor");
+    path.setAttribute("stroke-linecap", "round");
+    path.setAttribute("stroke-linejoin", "round");
+    path.setAttribute("stroke-width", "1.8");
+    svg.append(path);
+    return svg;
+  }
+
   function ensureEscapeKeyHandler() {
     if (window[ESCAPE_LISTENER_KEY]) {
       return;
@@ -2178,6 +2353,18 @@
         cursor: pointer;
       }
 
+      .opportunities-extension-header-actions {
+        display: inline-flex;
+        align-items: center;
+        gap: 6px;
+      }
+
+      .opportunities-extension-icon-button svg {
+        width: 18px;
+        height: 18px;
+        vertical-align: middle;
+      }
+
       .opportunities-extension-icon-button:hover,
       .opportunities-extension-icon-button:focus {
         border-color: #b8b2ad;
@@ -2223,7 +2410,7 @@
 
       .opportunities-extension-stage-dashboard {
         display: grid;
-        grid-template-columns: repeat(5, minmax(0, 1fr));
+        grid-template-columns: repeat(6, minmax(0, 1fr));
         gap: 12px;
       }
 
@@ -2259,6 +2446,10 @@
         border-top-color: #008aa6;
       }
 
+      .opportunities-extension-total-dashboard-card {
+        border-top-color: #00758f;
+      }
+
       .opportunities-extension-stage-dashboard-card[data-stage="PIPELINE"] {
         border-top-color: #6f6863;
       }
@@ -2724,23 +2915,23 @@
       }
 
       .opportunities-extension-table th:nth-child(3) {
-        width: 8%;
-      }
-
-      .opportunities-extension-table th:nth-child(4) {
         width: 17%;
       }
 
-      .opportunities-extension-table th:nth-child(5) {
+      .opportunities-extension-table th:nth-child(4) {
         width: 12%;
       }
 
+      .opportunities-extension-table th:nth-child(5) {
+        width: 9%;
+      }
+
       .opportunities-extension-table th:nth-child(6) {
         width: 9%;
       }
 
       .opportunities-extension-table th:nth-child(7) {
-        width: 9%;
+        width: 8%;
       }
 
       .opportunities-extension-table th:nth-child(8) {
@@ -2756,7 +2947,7 @@
       }
 
       .opportunities-extension-table td:nth-child(2),
-      .opportunities-extension-table td:nth-child(3),
+      .opportunities-extension-table td:nth-child(5),
       .opportunities-extension-table td:nth-child(6),
       .opportunities-extension-table td:nth-child(7),
       .opportunities-extension-table td:nth-child(8),
@@ -2784,6 +2975,64 @@
         color: #004f63;
       }
 
+      .opportunities-extension-opty-number-content {
+        display: inline-flex;
+        align-items: center;
+        gap: 6px;
+        max-width: 100%;
+      }
+
+      .opportunities-extension-copy-button {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        flex: 0 0 auto;
+        width: 24px;
+        height: 24px;
+        padding: 3px;
+        border: 0;
+        border-radius: 3px;
+        background: transparent;
+        color: #00758f;
+        cursor: pointer;
+      }
+
+      .opportunities-extension-copy-button svg {
+        width: 16px;
+        height: 16px;
+        fill: currentColor;
+      }
+
+      .opportunities-extension-copy-button:hover,
+      .opportunities-extension-copy-button:focus-visible {
+        background: #e8f4f6;
+        color: #004f63;
+        outline: none;
+      }
+
+      .opportunities-extension-copy-toast {
+        position: fixed;
+        right: 28px;
+        bottom: 28px;
+        z-index: 3;
+        max-width: min(360px, calc(100vw - 56px));
+        padding: 12px 16px;
+        border-radius: 4px;
+        background: #2f6f18;
+        box-shadow: 0 4px 12px rgba(0, 0, 0, .18);
+        color: #ffffff;
+        font-size: 13px;
+        font-weight: 700;
+      }
+
+      .opportunities-extension-copy-toast-error {
+        background: #a52b1c;
+      }
+
+      .opportunities-extension-copy-toast[hidden] {
+        display: none !important;
+      }
+
       .opportunities-extension-stage-badge {
         display: inline-flex;
         align-items: center;
@@ -3079,6 +3328,247 @@
         font-size: 13px;
       }
 
+      .opportunities-extension-modal[data-theme="dark"] {
+        background: #1f1f1f;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-shell,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-body {
+        background: #1f1f1f;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header {
+        border-bottom-color: #4e4a46;
+        background:
+          linear-gradient(90deg, #a8795d 0 11%, #dd5a47 11% 23%, #876e9b 23% 36%, #00a6be 36% 51%, #dfbd76 51% 63%, transparent 63% 100%) top left / 100% 6px no-repeat,
+          #292827;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header h1,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-value,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-field,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field {
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header p,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card span,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-empty,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel p,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-empty {
+        color: #c9c5c1;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-form,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-surface,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-panel,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item[open] {
+        border-color: #4e4a46;
+        background: #292827;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-search,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field input,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-field select,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button {
+        border-color: #6a6560;
+        background: #333130;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger::after {
+        border-top-color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-select-wrap::after {
+        border-top-color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger:disabled {
+        background: #292827;
+        color: #918b86;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-search::placeholder,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field input::placeholder {
+        color: #b5b0ab;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-select-all,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-option,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-heading,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item pre,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel h2 {
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-select-all,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table th {
+        border-bottom-color: #4e4a46;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-option:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table tbody tr:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-sort-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button:focus {
+        background: #3b3937;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table thead,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table th {
+        background: #333130;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table td {
+        border-bottom-color: #3f3c39;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table a,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button {
+        color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table a:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button:focus-visible {
+        background: #1d4e55;
+        color: #91e4ed;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="SQL"] {
+        color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="PIPELINE"] {
+        color: #d1cbc6;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="UPSIDE"] {
+        color: #ffbf62;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="FORECAST"] {
+        color: #d2b7e9;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="WON"] {
+        color: #9bd46a;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="SQL"] {
+        border-top-color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-total-dashboard-card {
+        border-top-color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="PIPELINE"] {
+        border-top-color: #c0b9b3;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="UPSIDE"] {
+        border-top-color: #ffb84d;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="FORECAST"] {
+        border-top-color: #cba7e7;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="WON"] {
+        border-top-color: #92cf5b;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="SQL"] {
+        border-color: #008aa6;
+        background: #008aa6;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="PIPELINE"] {
+        border-color: #6f6863;
+        background: #6f6863;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="UPSIDE"] {
+        border-color: #b96e00;
+        background: #b96e00;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="FORECAST"] {
+        border-color: #755b8b;
+        background: #755b8b;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="WON"] {
+        border-color: #4b7f22;
+        background: #4b7f22;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="OPEN"] {
+        color: #69c985;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="CLOSED"] {
+        color: #c3cad3;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="LOST"] {
+        color: #ff9d94;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="WON"] {
+        color: #83bfff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="OPEN"] {
+        border-color: #197a3d;
+        background: #197a3d;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="CLOSED"] {
+        border-color: #4b5563;
+        background: #4b5563;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="LOST"] {
+        border-color: #b13b34;
+        background: #b13b34;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="WON"] {
+        border-color: #1f5f99;
+        background: #1f5f99;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item {
+        border-color: #4e4a46;
+        background: #252423;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button {
+        color: #f6f4f2;
+      }
+
       @media (max-width: 700px) {
         .opportunities-extension-header {
           padding: 24px 20px 18px;
diff --git a/src/content.js b/src/content.js
index a137352..2817d11 100644
--- a/src/content.js
+++ b/src/content.js
@@ -25,6 +25,7 @@
   const TABLE_SEARCH_ID = "opportunities-extension-table-search";
   const STAGE_DASHBOARD_ID = "opportunities-extension-stage-dashboard";
   const FILTER_PREFERENCES_STORAGE_KEY = "opportunities-extension-filter-preferences";
+  const THEME_STORAGE_KEY = "opportunities-extension-theme";
   const OPPORTUNITY_DETAIL_URL = "https://eeho.fa.us2.oraclecloud.com/fscmUI/redwood/cx-sales/application/container/opportunities/opportunities-detail?puid=";
   const ACCOUNT_DETAIL_URL = "https://eeho.fa.us2.oraclecloud.com/fscmUI/redwood/cx-sales/application/container/accounts/accounts-detail?id=";
   const DEBUG_BODY_LIMIT = 12000;
@@ -53,7 +54,9 @@
   let tableSearch = "";
   let hasSavedCustomerFilter = false;
   let hasSavedOwnerFilter = false;
-  let stageDashboardAmounts = new Map(STAGE_OPTIONS.map((stage) => [stage, 0]));
+  let customerFilterInitialized = false;
+  let ownerFilterInitialized = false;
+  let stageDashboardAmounts = new Map([["TOTAL", 0], ...STAGE_OPTIONS.map((stage) => [stage, 0])]);
   let opportunitiesTableState = {
     items: [],
     status: "idle",
@@ -72,12 +75,12 @@
   const OPPORTUNITIES_COLUMNS = [
     { key: "name", label: "Name", value: (item) => item.Name, display: (item) => item.Name },
     { key: "optyNumber", label: "Opty Number", value: (item) => item.OptyNumber, display: (item) => item.OptyNumber },
-    { key: "winProbability", label: "Win Probability", value: (item) => getNestedValue(item, ["PrimaryRevenue", "WinProb"]), display: formatWinProbability },
     { key: "customer", label: "Customer", value: (item) => getNestedValue(item, ["CustomerAccount", "PartyUniqueName"]), display: (item) => getNestedValue(item, ["CustomerAccount", "PartyUniqueName"]) },
     { key: "owner", label: "Owner", value: getOwnerName, display: getOwnerName },
     { key: "revenue", label: "Amount", value: (item) => getNestedValue(item, ["PrimaryRevenue", "RevnAmount"]), display: formatRevenue },
     { key: "closeDate", label: "Close Date", value: (item) => item.EffectiveDate, display: (item) => formatOracleResponseDate(item.EffectiveDate) },
     { key: "stage", label: "Stage", value: (item) => item.ForecastGroup_c, display: (item) => item.ForecastGroup_c },
+    { key: "winProbability", label: "Win Probability", value: (item) => getNestedValue(item, ["PrimaryRevenue", "WinProb"]), display: formatWinProbability },
     { key: "status", label: "Status", value: (item) => item.StatusCode, display: (item) => item.StatusCode },
     { key: "lastUpdateDate", label: "Last Update Date", value: (item) => item.LastUpdateDate, display: (item) => formatOracleResponseDate(item.LastUpdateDate, true) }
   ];
@@ -175,6 +178,7 @@
     resetOpportunitiesTable();
     overlay.id = MODAL_ID;
     overlay.className = "opportunities-extension-modal";
+    overlay.setAttribute("data-theme", getSavedTheme());
     overlay.setAttribute("role", "dialog");
     overlay.setAttribute("aria-modal", "true");
     overlay.setAttribute("aria-labelledby", "opportunities-extension-title");
@@ -213,7 +217,20 @@
     closeButton.textContent = "X";
     closeButton.addEventListener("click", closeOpportunitiesModal);
 
-    header.append(titleBlock, closeButton);
+    const themeButton = document.createElement("button");
+    themeButton.type = "button";
+    themeButton.className = "opportunities-extension-icon-button opportunities-extension-theme-toggle";
+    themeButton.addEventListener("click", () => {
+      const nextTheme = overlay.getAttribute("data-theme") === "dark" ? "light" : "dark";
+      applyTheme(overlay, themeButton, nextTheme);
+    });
+    applyTheme(overlay, themeButton, overlay.getAttribute("data-theme"));
+
+    const headerActions = document.createElement("div");
+    headerActions.className = "opportunities-extension-header-actions";
+    headerActions.append(themeButton, closeButton);
+
+    header.append(titleBlock, headerActions);
 
     const body = document.createElement("main");
     body.className = "opportunities-extension-body";
@@ -241,6 +258,7 @@
     });
 
     select.addEventListener("change", () => {
+      resetCustomerAndOwnerFiltersForPeriod();
       saveFilterPreferences(select.value);
       requestOpportunitiesForPeriod(select.value);
     });
@@ -702,7 +720,9 @@
     tableSearch = "";
     hasSavedCustomerFilter = false;
     hasSavedOwnerFilter = false;
-    stageDashboardAmounts = new Map(STAGE_OPTIONS.map((stage) => [stage, 0]));
+    customerFilterInitialized = false;
+    ownerFilterInitialized = false;
+    stageDashboardAmounts = new Map([["TOTAL", 0], ...STAGE_OPTIONS.map((stage) => [stage, 0])]);
     opportunitiesTableState = {
       items: [],
       status: "idle",
@@ -712,6 +732,17 @@
     };
   }
 
+  function resetCustomerAndOwnerFiltersForPeriod() {
+    selectedCustomerKeys = new Set();
+    selectedOwnerKeys = new Set();
+    customerSearch = "";
+    ownerSearch = "";
+    hasSavedCustomerFilter = false;
+    hasSavedOwnerFilter = false;
+    customerFilterInitialized = false;
+    ownerFilterInitialized = false;
+  }
+
   function restoreFilterPreferences(select) {
     try {
       const rawPreferences = localStorage.getItem(FILTER_PREFERENCES_STORAGE_KEY);
@@ -739,11 +770,13 @@
       if (Array.isArray(preferences.customerKeys)) {
         selectedCustomerKeys = new Set(preferences.customerKeys.map(String));
         hasSavedCustomerFilter = true;
+        customerFilterInitialized = true;
       }
 
       if (Array.isArray(preferences.ownerKeys)) {
         selectedOwnerKeys = new Set(preferences.ownerKeys.map(String));
         hasSavedOwnerFilter = true;
+        ownerFilterInitialized = true;
       }
 
       customerSearch = typeof preferences.customerSearch === "string" ? preferences.customerSearch : "";
@@ -853,11 +886,20 @@
             cell.append(createStageBadge(column.display(item)));
           } else if (column.key === "status") {
             cell.append(createStatusBadge(column.display(item)));
-          } else if (column.key === "optyNumber") {
-            cell.append(createDetailLink(
+          } else if (column.key === "name" || column.key === "optyNumber") {
+            const opportunityLink = createDetailLink(
               column.display(item),
               item.OptyNumber ? `${OPPORTUNITY_DETAIL_URL}${encodeURIComponent(item.OptyNumber)}` : ""
-            ));
+            );
+
+            if (column.key === "optyNumber" && item.OptyNumber) {
+              const opportunityCellContent = document.createElement("span");
+              opportunityCellContent.className = "opportunities-extension-opty-number-content";
+              opportunityCellContent.append(opportunityLink, createCopyOpportunityButton(item.OptyNumber));
+              cell.append(opportunityCellContent);
+            } else {
+              cell.append(opportunityLink);
+            }
           } else if (column.key === "customer") {
             cell.append(createDetailLink(
               column.display(item),
@@ -888,6 +930,24 @@
 
     dashboard.textContent = "";
 
+    const totalCard = document.createElement("section");
+    const totalLabel = document.createElement("span");
+    const totalValue = document.createElement("strong");
+
+    totalCard.className = "opportunities-extension-stage-dashboard-card opportunities-extension-total-dashboard-card";
+    totalCard.setAttribute("data-stage", "TOTAL");
+    totalLabel.textContent = "Total Opportunities";
+    totalValue.className = "opportunities-extension-stage-dashboard-value";
+    totalValue.setAttribute("aria-label", "Total opportunities");
+    animateStageDashboardValue(
+      totalValue,
+      "TOTAL",
+      items.length,
+      (amount) => Math.round(amount).toLocaleString()
+    );
+    totalCard.append(totalLabel, totalValue);
+    dashboard.append(totalCard);
+
     STAGE_OPTIONS.forEach((stage) => {
       const stageItems = items.filter((item) => item.ForecastGroup_c === stage);
       const amount = stageItems.reduce((total, item) => {
@@ -1121,20 +1181,18 @@
 
   function resetCustomerFilter(items) {
     const customerOptions = getCustomerOptions(items);
-    selectedCustomerKeys = hasSavedCustomerFilter
-      ? new Set(customerOptions
-        .map((customer) => customer.key)
-        .filter((key) => selectedCustomerKeys.has(key)))
-      : new Set(customerOptions.map((customer) => customer.key));
+    if (!customerFilterInitialized) {
+      selectedCustomerKeys = new Set(customerOptions.map((customer) => customer.key));
+      customerFilterInitialized = true;
+    }
   }
 
   function resetOwnerFilter(items) {
     const ownerOptions = getOwnerOptions(items);
-    selectedOwnerKeys = hasSavedOwnerFilter
-      ? new Set(ownerOptions
-        .map((owner) => owner.key)
-        .filter((key) => selectedOwnerKeys.has(key)))
-      : new Set(ownerOptions.map((owner) => owner.key));
+    if (!ownerFilterInitialized) {
+      selectedOwnerKeys = new Set(ownerOptions.map((owner) => owner.key));
+      ownerFilterInitialized = true;
+    }
   }
 
   function renderCustomerFilter() {
@@ -1468,6 +1526,76 @@
     return link;
   }
 
+  function createCopyOpportunityButton(optyNumber) {
+    const button = document.createElement("button");
+    const icon = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+
+    button.type = "button";
+    button.className = "opportunities-extension-copy-button";
+    button.setAttribute("aria-label", `Copy opportunity number ${optyNumber}`);
+    button.title = "Copy opportunity number";
+    button.addEventListener("click", (event) => {
+      event.preventDefault();
+      event.stopPropagation();
+      copyOpportunityNumber(String(optyNumber));
+    });
+
+    icon.setAttribute("viewBox", "0 0 24 24");
+    icon.setAttribute("aria-hidden", "true");
+    path.setAttribute("d", "M8 8V5.5A2.5 2.5 0 0 1 10.5 3h8A2.5 2.5 0 0 1 21 5.5v8a2.5 2.5 0 0 1-2.5 2.5H16v2.5a2.5 2.5 0 0 1-2.5 2.5h-8A2.5 2.5 0 0 1 3 18.5v-8A2.5 2.5 0 0 1 5.5 8H8zm2 0h3.5A2.5 2.5 0 0 1 16 10.5v3.5h2.5a.5.5 0 0 0 .5-.5v-8a.5.5 0 0 0-.5-.5h-8a.5.5 0 0 0-.5.5V8zm3.5 2h-8a.5.5 0 0 0-.5.5v8a.5.5 0 0 0 .5.5h8a.5.5 0 0 0 .5-.5v-8a.5.5 0 0 0-.5-.5z");
+    icon.append(path);
+    button.append(icon);
+    return button;
+  }
+
+  async function copyOpportunityNumber(optyNumber) {
+    try {
+      if (navigator.clipboard && navigator.clipboard.writeText) {
+        await navigator.clipboard.writeText(optyNumber);
+      } else {
+        const input = document.createElement("textarea");
+        input.value = optyNumber;
+        input.setAttribute("readonly", "true");
+        input.style.position = "fixed";
+        input.style.opacity = "0";
+        document.body.append(input);
+        input.select();
+        document.execCommand("copy");
+        input.remove();
+      }
+
+      showCopyConfirmation(`Opty Number ${optyNumber} copied.`);
+    } catch (error) {
+      showCopyConfirmation("Unable to copy opportunity number.", true);
+    }
+  }
+
+  function showCopyConfirmation(message, isError = false) {
+    const modal = document.getElementById(MODAL_ID);
+
+    if (!modal) {
+      return;
+    }
+
+    let toast = modal.querySelector(".opportunities-extension-copy-toast");
+
+    if (!toast) {
+      toast = document.createElement("div");
+      toast.className = "opportunities-extension-copy-toast";
+      toast.setAttribute("role", "status");
+      modal.append(toast);
+    }
+
+    toast.classList.toggle("opportunities-extension-copy-toast-error", isError);
+    toast.textContent = message;
+    toast.hidden = false;
+    window.clearTimeout(toast.copyTimeout);
+    toast.copyTimeout = window.setTimeout(() => {
+      toast.hidden = true;
+    }, 2400);
+  }
+
   function createStageBadge(stage) {
     const badge = document.createElement("span");
     const normalizedStage = typeof stage === "string" ? stage.toUpperCase() : "";
@@ -1993,6 +2121,53 @@
     document.documentElement.classList.remove("opportunities-extension-scroll-lock");
   }
 
+  function getSavedTheme() {
+    try {
+      return localStorage.getItem(THEME_STORAGE_KEY) === "dark" ? "dark" : "light";
+    } catch (error) {
+      return "light";
+    }
+  }
+
+  function applyTheme(modal, button, theme) {
+    const isDarkTheme = theme === "dark";
+
+    modal.setAttribute("data-theme", isDarkTheme ? "dark" : "light");
+    button.textContent = "";
+    button.setAttribute("aria-label", isDarkTheme ? "Ativar modo claro" : "Ativar modo escuro");
+    button.title = isDarkTheme ? "Light mode" : "Dark mode";
+    button.append(createThemeIcon(isDarkTheme ? "sun" : "moon"));
+
+    try {
+      localStorage.setItem(THEME_STORAGE_KEY, isDarkTheme ? "dark" : "light");
+    } catch (error) {
+      // Continue with the selected theme when browser storage is unavailable.
+    }
+  }
+
+  function createThemeIcon(iconName) {
+    const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+
+    svg.setAttribute("viewBox", "0 0 24 24");
+    svg.setAttribute("aria-hidden", "true");
+    svg.setAttribute("focusable", "false");
+
+    if (iconName === "sun") {
+      path.setAttribute("d", "M12 3V1m0 22v-2m9-9h2M1 12h2m15.36 6.36 1.42 1.42M4.22 4.22l1.42 1.42m12.72 0 1.42-1.42M4.22 19.78l1.42-1.42M16.5 12a4.5 4.5 0 1 1-9 0 4.5 4.5 0 0 1 9 0Z");
+    } else {
+      path.setAttribute("d", "M20.5 14.2A8.5 8.5 0 0 1 9.8 3.5a8.5 8.5 0 1 0 10.7 10.7Z");
+    }
+
+    path.setAttribute("fill", "none");
+    path.setAttribute("stroke", "currentColor");
+    path.setAttribute("stroke-linecap", "round");
+    path.setAttribute("stroke-linejoin", "round");
+    path.setAttribute("stroke-width", "1.8");
+    svg.append(path);
+    return svg;
+  }
+
   function ensureEscapeKeyHandler() {
     if (window[ESCAPE_LISTENER_KEY]) {
       return;
@@ -2178,6 +2353,18 @@
         cursor: pointer;
       }
 
+      .opportunities-extension-header-actions {
+        display: inline-flex;
+        align-items: center;
+        gap: 6px;
+      }
+
+      .opportunities-extension-icon-button svg {
+        width: 18px;
+        height: 18px;
+        vertical-align: middle;
+      }
+
       .opportunities-extension-icon-button:hover,
       .opportunities-extension-icon-button:focus {
         border-color: #b8b2ad;
@@ -2223,7 +2410,7 @@
 
       .opportunities-extension-stage-dashboard {
         display: grid;
-        grid-template-columns: repeat(5, minmax(0, 1fr));
+        grid-template-columns: repeat(6, minmax(0, 1fr));
         gap: 12px;
       }
 
@@ -2259,6 +2446,10 @@
         border-top-color: #008aa6;
       }
 
+      .opportunities-extension-total-dashboard-card {
+        border-top-color: #00758f;
+      }
+
       .opportunities-extension-stage-dashboard-card[data-stage="PIPELINE"] {
         border-top-color: #6f6863;
       }
@@ -2724,23 +2915,23 @@
       }
 
       .opportunities-extension-table th:nth-child(3) {
-        width: 8%;
-      }
-
-      .opportunities-extension-table th:nth-child(4) {
         width: 17%;
       }
 
-      .opportunities-extension-table th:nth-child(5) {
+      .opportunities-extension-table th:nth-child(4) {
         width: 12%;
       }
 
+      .opportunities-extension-table th:nth-child(5) {
+        width: 9%;
+      }
+
       .opportunities-extension-table th:nth-child(6) {
         width: 9%;
       }
 
       .opportunities-extension-table th:nth-child(7) {
-        width: 9%;
+        width: 8%;
       }
 
       .opportunities-extension-table th:nth-child(8) {
@@ -2756,7 +2947,7 @@
       }
 
       .opportunities-extension-table td:nth-child(2),
-      .opportunities-extension-table td:nth-child(3),
+      .opportunities-extension-table td:nth-child(5),
       .opportunities-extension-table td:nth-child(6),
       .opportunities-extension-table td:nth-child(7),
       .opportunities-extension-table td:nth-child(8),
@@ -2784,6 +2975,64 @@
         color: #004f63;
       }
 
+      .opportunities-extension-opty-number-content {
+        display: inline-flex;
+        align-items: center;
+        gap: 6px;
+        max-width: 100%;
+      }
+
+      .opportunities-extension-copy-button {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        flex: 0 0 auto;
+        width: 24px;
+        height: 24px;
+        padding: 3px;
+        border: 0;
+        border-radius: 3px;
+        background: transparent;
+        color: #00758f;
+        cursor: pointer;
+      }
+
+      .opportunities-extension-copy-button svg {
+        width: 16px;
+        height: 16px;
+        fill: currentColor;
+      }
+
+      .opportunities-extension-copy-button:hover,
+      .opportunities-extension-copy-button:focus-visible {
+        background: #e8f4f6;
+        color: #004f63;
+        outline: none;
+      }
+
+      .opportunities-extension-copy-toast {
+        position: fixed;
+        right: 28px;
+        bottom: 28px;
+        z-index: 3;
+        max-width: min(360px, calc(100vw - 56px));
+        padding: 12px 16px;
+        border-radius: 4px;
+        background: #2f6f18;
+        box-shadow: 0 4px 12px rgba(0, 0, 0, .18);
+        color: #ffffff;
+        font-size: 13px;
+        font-weight: 700;
+      }
+
+      .opportunities-extension-copy-toast-error {
+        background: #a52b1c;
+      }
+
+      .opportunities-extension-copy-toast[hidden] {
+        display: none !important;
+      }
+
       .opportunities-extension-stage-badge {
         display: inline-flex;
         align-items: center;
@@ -3079,6 +3328,247 @@
         font-size: 13px;
       }
 
+      .opportunities-extension-modal[data-theme="dark"] {
+        background: #1f1f1f;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-shell,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-body {
+        background: #1f1f1f;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header {
+        border-bottom-color: #4e4a46;
+        background:
+          linear-gradient(90deg, #a8795d 0 11%, #dd5a47 11% 23%, #876e9b 23% 36%, #00a6be 36% 51%, #dfbd76 51% 63%, transparent 63% 100%) top left / 100% 6px no-repeat,
+          #292827;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header h1,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-value,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-field,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-label,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field {
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-header p,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card span,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-empty,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel p,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-empty {
+        color: #c9c5c1;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-form,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-surface,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-panel,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item[open] {
+        border-color: #4e4a46;
+        background: #292827;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-search,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field input,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-field select,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button {
+        border-color: #6a6560;
+        background: #333130;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger::after {
+        border-top-color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-select-wrap::after {
+        border-top-color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-trigger:disabled {
+        background: #292827;
+        color: #918b86;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-search::placeholder,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table-search-field input::placeholder {
+        color: #b5b0ab;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-select-all,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-option,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-heading,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item pre,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-panel h2 {
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-select-all,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table th {
+        border-bottom-color: #4e4a46;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-customer-filter-option:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table tbody tr:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-sort-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button:focus {
+        background: #3b3937;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table thead,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table th {
+        background: #333130;
+        color: #f6f4f2;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table td {
+        border-bottom-color: #3f3c39;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table a,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button {
+        color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-table a:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button:hover,
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-copy-button:focus-visible {
+        background: #1d4e55;
+        color: #91e4ed;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="SQL"] {
+        color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="PIPELINE"] {
+        color: #d1cbc6;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="UPSIDE"] {
+        color: #ffbf62;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="FORECAST"] {
+        color: #d2b7e9;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[data-stage="WON"] {
+        color: #9bd46a;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="SQL"] {
+        border-top-color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-total-dashboard-card {
+        border-top-color: #43c4d5;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="PIPELINE"] {
+        border-top-color: #c0b9b3;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="UPSIDE"] {
+        border-top-color: #ffb84d;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="FORECAST"] {
+        border-top-color: #cba7e7;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-dashboard-card[data-stage="WON"] {
+        border-top-color: #92cf5b;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="SQL"] {
+        border-color: #008aa6;
+        background: #008aa6;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="PIPELINE"] {
+        border-color: #6f6863;
+        background: #6f6863;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="UPSIDE"] {
+        border-color: #b96e00;
+        background: #b96e00;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="FORECAST"] {
+        border-color: #755b8b;
+        background: #755b8b;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-stage-filter-button[aria-pressed="true"][data-stage="WON"] {
+        border-color: #4b7f22;
+        background: #4b7f22;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="OPEN"] {
+        color: #69c985;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="CLOSED"] {
+        color: #c3cad3;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="LOST"] {
+        color: #ff9d94;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[data-status="WON"] {
+        color: #83bfff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="OPEN"] {
+        border-color: #197a3d;
+        background: #197a3d;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="CLOSED"] {
+        border-color: #4b5563;
+        background: #4b5563;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="LOST"] {
+        border-color: #b13b34;
+        background: #b13b34;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-status-filter-button[aria-pressed="true"][data-status="WON"] {
+        border-color: #1f5f99;
+        background: #1f5f99;
+        color: #ffffff;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-debug-item {
+        border-color: #4e4a46;
+        background: #252423;
+      }
+
+      .opportunities-extension-modal[data-theme="dark"] .opportunities-extension-icon-button {
+        color: #f6f4f2;
+      }
+
       @media (max-width: 700px) {
         .opportunities-extension-header {
           padding: 24px 20px 18px;