Fix email links broken in Outlook and standardize all email URLs

- Rewrite ctaButton to use td-background pattern (works in all clients
  including Outlook, Gmail, Yahoo, Apple Mail) instead of VML/conditional
  comments that broke link clicking in Outlook desktop
- Add plaintext fallback URL below every CTA button so users always have
  a working link even if the button fails
- Add getBaseUrl() and ensureAbsoluteUrl() helpers in email.ts to
  guarantee all email links are absolute https:// URLs
- Apply ensureAbsoluteUrl safety net in sendStyledNotificationEmail and
  sendNotificationEmail so relative paths can never reach email templates
- Standardize all NEXTAUTH_URL fallbacks to https://portal.monaco-opc.com
  (was inconsistently http://localhost:3000 or https://monaco-opc.com)
- Fix legacy notification.ts: wrong argument order in
  sendJuryInvitationEmail (URL was passed as name parameter)
- Fix legacy notification.ts: missing NEXTAUTH_URL fallback for
  evaluation reminder URL construction
- Change tooltip styling from red bg to white bg with black text

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/server/routers/applicant.ts

@@ -826,7 +826,7 @@ export const applicantRouter = router({
       }
 
       const teamLeadName = ctx.user.name?.trim() || 'A team lead'
-      const baseUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+      const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
       const requiresAccountSetup = user.status !== 'ACTIVE'
 
       try {

src/server/routers/message.ts

@@ -75,7 +75,7 @@ export const messageRouter = router({
           select: { id: true, name: true, email: true },
         })
 
-        const baseUrl = process.env.NEXTAUTH_URL || 'https://monaco-opc.com'
+        const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
 
         for (const user of users) {
           try {

src/server/routers/project-pool.ts

@@ -55,7 +55,7 @@ async function sendRoundEntryEmails(
             `Your project has entered: ${roundName}`,
             `Your project "${project.title}" has been added to the round "${roundName}" in the Monaco Ocean Protection Challenge. You will receive further instructions as the round progresses.`,
             'View Your Dashboard',
-            `${process.env.NEXTAUTH_URL || 'https://monaco-opc.com'}/dashboard`,
+            `${process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'}/dashboard`,
           ).catch((err) => {
             console.error(`[round-entry-email] Failed to send to ${email}:`, err)
           }),

src/server/routers/project.ts

@@ -623,7 +623,7 @@ export const projectRouter = router({
 
       // Send invite emails outside the transaction (never fail project creation)
       if (membersToInvite.length > 0) {
-        const baseUrl = process.env.NEXTAUTH_URL || 'https://monaco-opc.com'
+        const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
         for (const member of membersToInvite) {
           try {
             const token = crypto.randomBytes(32).toString('hex')

src/server/routers/round.ts

@@ -495,7 +495,7 @@ export const roundRouter = router({
                 `Your project has advanced to: ${targetRound.name}`,
                 `Congratulations! Your project "${project.title}" has advanced from "${currentRound.name}" to "${targetRound.name}" in the Monaco Ocean Protection Challenge.`,
                 'View Your Dashboard',
-                `${process.env.NEXTAUTH_URL || 'https://monaco-opc.com'}/dashboard`,
+                `${process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'}/dashboard`,
               ).catch((err) => {
                 console.error(`[advanceProjects] notifyOnAdvance email failed for ${email}:`, err)
               })

src/server/routers/user.ts

@@ -870,7 +870,7 @@ export const userRouter = router({
       const emailErrors: string[] = []
 
       if (input.sendInvitation) {
-        const baseUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+        const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
         const expiryHours = await getInviteExpiryHours(ctx.prisma)
         const expiryMs = expiryHours * 60 * 60 * 1000
 
@@ -1025,7 +1025,7 @@ export const userRouter = router({
         },
       })
 
-      const baseUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+      const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
       const inviteUrl = `${baseUrl}/accept-invite?token=${token}`
 
       // Send invitation email
@@ -1074,7 +1074,7 @@ export const userRouter = router({
         return { sent: 0, skipped: input.userIds.length }
       }
 
-      const baseUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+      const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
       const expiryHours = await getInviteExpiryHours(ctx.prisma)
       const expiryMs = expiryHours * 60 * 60 * 1000
       let sent = 0
@@ -1478,7 +1478,7 @@ export const userRouter = router({
       })
 
       // Generate a callback URL for the magic link
-      const baseUrl = process.env.NEXTAUTH_URL || 'http://localhost:3000'
+      const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
       const callbackUrl = `${baseUrl}/set-password`
 
       // We don't send the email here - the user will use the magic link form

src/server/services/email-digest.ts

@@ -54,7 +54,7 @@ export async function processDigests(
     ? JSON.parse(sectionsSetting.value)
     : ['pending_evaluations', 'upcoming_deadlines', 'new_assignments', 'unread_notifications']
 
-  const baseUrl = process.env.NEXTAUTH_URL || 'https://monaco-opc.com'
+  const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
 
   for (const user of users) {
     try {

src/server/services/evaluation-reminders.ts

@@ -60,7 +60,7 @@ export async function sendManualReminders(roundId: string): Promise<ReminderResu
     select: { id: true, name: true, email: true },
   })
 
-  const baseUrl = process.env.NEXTAUTH_URL || 'https://monaco-opc.com'
+  const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
   const deadlineStr = round.windowCloseAt
     ? round.windowCloseAt.toLocaleDateString('en-US', {
         weekday: 'long',
@@ -217,7 +217,7 @@ async function sendRemindersForRound(
     select: { id: true, name: true, email: true },
   })
 
-  const baseUrl = process.env.NEXTAUTH_URL || 'https://monaco-opc.com'
+  const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
   const deadlineStr = round.windowCloseAt.toLocaleDateString('en-US', {
     weekday: 'long',
     year: 'numeric',

src/server/services/in-app-notification.ts

@@ -6,7 +6,7 @@
  */
 
 import { prisma } from '@/lib/prisma'
-import { sendStyledNotificationEmail } from '@/lib/email'
+import { sendStyledNotificationEmail, ensureAbsoluteUrl } from '@/lib/email'
 
 // Notification priority levels
 export type NotificationPriority = 'low' | 'normal' | 'high' | 'urgent'
@@ -427,8 +427,7 @@ async function maybeSendEmailWithSetting(
     }
 
     // Ensure linkUrl is absolute for emails (relative paths break in email clients)
-    const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
-    const absoluteLinkUrl = linkUrl && linkUrl.startsWith('/') ? `${baseUrl}${linkUrl}` : linkUrl
+    const absoluteLinkUrl = ensureAbsoluteUrl(linkUrl)
 
     await sendStyledNotificationEmail(
       user.email,

src/server/services/notification.ts

@@ -128,22 +128,24 @@ async function sendEmailNotification(
       case 'JURY_INVITATION':
         await sendJuryInvitationEmail(
           email,
+          name,
           data.inviteUrl,
-          data.programName,
           data.roundName
         )
         return { success: true }
 
-      case 'EVALUATION_REMINDER':
+      case 'EVALUATION_REMINDER': {
+        const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
         await sendEvaluationReminderEmail(
           email,
           name,
           parseInt(data.pendingCount || '0'),
           data.roundName || 'Current Round',
           data.deadline || 'Soon',
-          data.assignmentsUrl || `${process.env.NEXTAUTH_URL}/jury/assignments`
+          data.assignmentsUrl || `${baseUrl}/jury/assignments`
         )
         return { success: true }
+      }
 
       case 'ANNOUNCEMENT':
         await sendAnnouncementEmail(