diff --git a/admin.php b/admin.php
index 86f2726..ab5fac3 100644
--- a/admin.php
+++ b/admin.php
@@ -49,6 +49,9 @@ $chart_values = json_encode(array_column($chart_data, 'user_count'));
     <meta charset="UTF-8">
     <title>Admin Dashboard</title>
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap" rel="stylesheet">
     <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
     <style>
         :root {
@@ -62,10 +65,15 @@ $chart_values = json_encode(array_column($chart_data, 'user_count'));
             --text-muted: #97acd0;
             --accent: #2c4bd1;
             --accent-strong: #1029a0;
+            --accent-soft: #bbc8fb;
             --success: #18d1b3;
             --danger: #ff6b81;
+            --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
+            --button-shadow: 0 16px 30px rgba(11, 32, 131, 0.26);
         }
         body {
+            font-family: var(--font-body);
             min-height: 100vh;
             margin: 0;
             background:
@@ -81,6 +89,19 @@ $chart_values = json_encode(array_column($chart_data, 'user_count'));
         h2, h3, .h5, p, label, th, td {
             color: var(--text-main);
         }
+        h2, h3, .h5, th, .btn, .page-link {
+            font-family: var(--font-display);
+        }
+        h2 {
+            font-size: 2rem;
+            font-weight: 700;
+            letter-spacing: -0.03em;
+            margin-bottom: 0.35rem;
+        }
+        h3, .h5 {
+            font-weight: 700;
+            letter-spacing: -0.02em;
+        }
         p.text-muted, .text-muted {
             color: var(--text-muted) !important;
         }
@@ -106,26 +127,43 @@ $chart_values = json_encode(array_column($chart_data, 'user_count'));
             color: var(--text-main);
             border: 1px solid rgba(34, 199, 255, 0.28);
         }
+        .btn,
+        .page-link {
+            border-radius: 14px;
+            font-weight: 700;
+            letter-spacing: 0.02em;
+            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
+        }
+        .btn:hover,
+        .page-link:hover {
+            transform: translateY(-1px);
+        }
         .btn-outline-primary {
             color: var(--accent-soft, #bbc8fb);
             border-color: rgba(34, 199, 255, 0.35);
+            background: rgba(221, 226, 253, 0.06);
+            box-shadow: none;
         }
         .btn-outline-primary:hover {
             background: rgba(187, 200, 251, 0.18);
             border-color: rgba(34, 199, 255, 0.55);
+            box-shadow: var(--button-shadow);
         }
         .btn-success,
         .btn-primary {
             background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
-            border: none;
+            border: 1px solid rgba(221, 226, 253, 0.12);
+            box-shadow: var(--button-shadow);
         }
         .btn-success:hover,
         .btn-primary:hover {
             background: linear-gradient(135deg, #bbc8fb 0%, #2c4bd1 100%);
+            box-shadow: 0 20px 34px rgba(11, 32, 131, 0.32);
         }
         .btn-danger {
             background: linear-gradient(135deg, #ff7a8b 0%, #f04f74 100%);
-            border: none;
+            border: 1px solid rgba(255, 255, 255, 0.08);
+            box-shadow: 0 16px 30px rgba(72, 18, 36, 0.28);
         }
         .table {
             margin-bottom: 0;
@@ -138,8 +176,11 @@ $chart_values = json_encode(array_column($chart_data, 'user_count'));
         }
         .table thead th {
             border-bottom-color: rgba(221, 226, 253, 0.18);
-            color: var(--accent);
+            color: var(--accent-soft);
             font-weight: 700;
+            text-transform: uppercase;
+            letter-spacing: 0.08em;
+            font-size: 0.78rem;
             background: rgba(255, 255, 255, 0.02);
         }
         .table td,
@@ -151,6 +192,7 @@ $chart_values = json_encode(array_column($chart_data, 'user_count'));
             background: rgba(255, 255, 255, 0.04);
             color: var(--text-main);
             border-color: rgba(143, 232, 255, 0.12);
+            box-shadow: none;
         }
         .page-item.active .page-link {
             background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
diff --git a/assets/css/custom.css b/assets/css/custom.css
index c05b579..dd864c3 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -8,6 +8,9 @@
     --text-muted: #bbc8fb;
     --gradient: linear-gradient(135deg, #2c4bd1 0%, #1029a0 100%);
     --bg-gradient: linear-gradient(-45deg, #0b2083, #1029a0, #2c4bd1);
+    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    --font-display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    --button-shadow: 0 18px 32px rgba(11, 32, 131, 0.28);
 }
 
 body {
@@ -15,7 +18,7 @@ body {
     background-size: 400% 400%;
     animation: gradient 15s ease infinite;
     color: var(--text-main);
-    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    font-family: var(--font-body);
     margin: 0;
     min-height: 100vh;
 }
@@ -54,17 +57,22 @@ body {
 /* Buttons */
 button {
     background: var(--gradient);
-    border: none;
-    padding: 0.75rem 1.5rem;
-    border-radius: 12px;
+    border: 1px solid rgba(221, 226, 253, 0.14);
+    padding: 0.82rem 1.55rem;
+    border-radius: 14px;
     color: white;
     cursor: pointer;
-    font-weight: 600;
-    transition: transform 0.2s;
+    font-family: var(--font-display);
+    font-weight: 700;
+    letter-spacing: 0.03em;
+    box-shadow: var(--button-shadow);
+    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
 }
 
 button:hover {
     transform: translateY(-2px);
+    box-shadow: 0 22px 36px rgba(11, 32, 131, 0.34);
+    filter: brightness(1.04);
 }
 
 /* Inputs */
diff --git a/edit_attendee.php b/edit_attendee.php
index 4a4b265..4c9a4dd 100644
--- a/edit_attendee.php
+++ b/edit_attendee.php
@@ -63,6 +63,9 @@ try {
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Edit Attendee</title>
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap" rel="stylesheet">
     <style>
         :root {
             --bg-start: #0b2083;
@@ -74,8 +77,12 @@ try {
             --accent: #2c4bd1;
             --accent-strong: #1029a0;
             --accent-soft: #bbc8fb;
+            --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
+            --button-shadow: 0 16px 30px rgba(11, 32, 131, 0.28);
         }
         body {
+            font-family: var(--font-body);
             background:
                 radial-gradient(circle at top left, rgba(221, 226, 253, 0.22), transparent 28%),
                 linear-gradient(135deg, var(--bg-start) 0%, #1029a0 55%, var(--bg-end) 100%);
@@ -89,9 +96,15 @@ try {
         }
         h1 {
             color: var(--text-main);
-            font-weight: 800;
+            font-family: var(--font-display);
+            font-weight: 700;
+            letter-spacing: -0.04em;
             margin-bottom: 1.5rem;
         }
+        .form-label,
+        .btn {
+            font-family: var(--font-display);
+        }
         form {
             background: var(--surface);
             border: 1px solid var(--line);
@@ -115,17 +128,29 @@ try {
             border-color: rgba(44, 75, 209, 0.65);
             box-shadow: 0 0 0 0.2rem rgba(187, 200, 251, 0.18);
         }
+        .btn {
+            border-radius: 14px;
+            font-weight: 700;
+            letter-spacing: 0.03em;
+            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
+        }
+        .btn:hover {
+            transform: translateY(-1px);
+        }
         .btn-primary {
             background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
-            border: none;
+            border: 1px solid rgba(221, 226, 253, 0.14);
+            box-shadow: var(--button-shadow);
         }
         .btn-secondary {
             background: rgba(221, 226, 253, 0.12);
             border-color: rgba(221, 226, 253, 0.22);
+            color: var(--text-main);
         }
         .btn-secondary:hover {
             background: rgba(221, 226, 253, 0.18);
             border-color: rgba(221, 226, 253, 0.32);
+            box-shadow: 0 14px 26px rgba(11, 32, 131, 0.18);
         }
     </style>
 </head>
diff --git a/index.php b/index.php
index fb61df5..a13fe0e 100644
--- a/index.php
+++ b/index.php
@@ -6,6 +6,9 @@
     <title>AppWizzy Webinar Registration</title>
     <meta name="description" content="Register for the AppWizzy webinar about building scalable apps with real frameworks, your own server, and your own database.">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap" rel="stylesheet">
     <style>
         :root {
             --bg-start: #0b2083;
@@ -21,12 +24,15 @@
             --accent-strong: #1029a0;
             --accent-soft: #bbc8fb;
             --success: #18d1b3;
+            --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
+            --button-shadow: 0 18px 36px rgba(11, 32, 131, 0.34);
         }
         * {
             box-sizing: border-box;
         }
         body {
-            font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            font-family: var(--font-body);
             background:
                 radial-gradient(circle at top left, rgba(221, 226, 253, 0.24), transparent 30%),
                 radial-gradient(circle at bottom right, rgba(44, 75, 209, 0.24), transparent 35%),
@@ -66,17 +72,29 @@
             margin-bottom: 40px;
             color: var(--accent-soft);
         }
+        .brand-logo,
+        .webinar-title,
+        .webinar-subtitle,
+        .speakers-section h3,
+        .what-you-learn h4,
+        .right-column h2,
+        .btn-register,
+        .btn-light,
+        .btn-outline-light {
+            font-family: var(--font-display);
+        }
         .webinar-title {
             font-size: 2.8rem;
             font-weight: 800;
             margin-top: 10px;
             margin-bottom: 12px;
             color: var(--text-main);
-            letter-spacing: -0.03em;
+            letter-spacing: -0.04em;
         }
         .webinar-subtitle {
-            font-size: 1.2rem;
+            font-size: 1.15rem;
             font-weight: 700;
+            letter-spacing: 0.01em;
             margin-top: 10px;
             color: var(--accent-soft);
         }
@@ -149,17 +167,46 @@
             background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
             color: #fff;
             border: none;
-            border-radius: 14px;
-            padding: 14px;
+            border: 1px solid rgba(221, 226, 253, 0.18);
+            border-radius: 16px;
+            padding: 15px 18px;
             width: 100%;
-            font-weight: 800;
-            letter-spacing: 0.01em;
-            transition: all 0.25s ease;
-            box-shadow: 0 16px 32px rgba(16, 41, 160, 0.35);
+            font-weight: 700;
+            font-size: 0.98rem;
+            letter-spacing: 0.03em;
+            text-transform: uppercase;
+            transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
+            box-shadow: var(--button-shadow);
         }
         .btn-register:hover {
             transform: translateY(-2px);
-            box-shadow: 0 22px 36px rgba(16, 41, 160, 0.42);
+            box-shadow: 0 24px 40px rgba(11, 32, 131, 0.42);
+            filter: brightness(1.04);
+        }
+        .btn-light,
+        .btn-outline-light {
+            border-radius: 14px;
+            padding: 12px 18px;
+            font-size: 0.92rem;
+            font-weight: 700;
+            letter-spacing: 0.02em;
+            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
+        }
+        .btn-light {
+            background: linear-gradient(135deg, #dde2fd 0%, #bbc8fb 100%);
+            border: 1px solid rgba(221, 226, 253, 0.55);
+            color: #0b2083;
+            box-shadow: 0 14px 28px rgba(11, 32, 131, 0.2);
+        }
+        .btn-outline-light {
+            background: rgba(221, 226, 253, 0.08);
+            border: 1px solid rgba(221, 226, 253, 0.22);
+            color: var(--text-main);
+        }
+        .btn-light:hover,
+        .btn-outline-light:hover {
+            transform: translateY(-1px);
+            box-shadow: 0 18px 30px rgba(11, 32, 131, 0.24);
         }
         .what-you-learn {
             margin-top: 40px;
@@ -214,7 +261,7 @@
                         
                         <h1 class="webinar-title" style="line-height: 1.2;">Building Scalable Apps with AppWizzy</h1>
                         <h2 class="webinar-subtitle">Professional Vibe-Coding Webinar</h2>
-                                                <div class="webinar-time">WEDNESDAY, NOVEMBER 19 | 10AM EST | 7AM PST | 4PM CET</div>
+                                                <div class="webinar-time">WEDNESDAY, MARCH 25 | 12PM EDT | 9AM PDT | 6PM CET</div>
                         <p class="webinar-description">The fastest way to go from an idea to a working app you own, running on your server, with your database, using real frameworks.</p>
                         <div class="speakers-section">
                             <h3>Speakers</h3>
@@ -265,8 +312,8 @@
                                 <input type="text" class="form-control" name="company" placeholder="Company">
                             </div>
                             <div class="mb-3">
-                                <select class="form-select form-control" name="how_did_you_hear">
-                                    <option selected>How did you hear about this webinar?</option>
+                                <select class="form-select form-control" name="how_did_you_hear" required>
+                                    <option value="" selected disabled hidden>How did you hear about this webinar?</option>
                                     <option value="Social Media">Social Media (X, Instargram, Facebook, etc.)</option>
                                     <option value="LinkedIn">LinkedIn</option>
                                     <option value="Reddit">Reddit</option>
diff --git a/login.php b/login.php
index f10abd2..8fafe3e 100644
--- a/login.php
+++ b/login.php
@@ -43,7 +43,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Login - Webinar Platform</title>
-    <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap" rel="stylesheet">
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap" rel="stylesheet">
     <style>
         :root {
             --primary-color: #2c4bd1;
@@ -57,12 +59,15 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
             --input-focus-border: #2c4bd1;
             --error-color: #ff8ea0;
             --success-color: #18d1b3;
+            --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
+            --button-shadow: 0 18px 36px rgba(11, 32, 131, 0.34);
         }
         * {
             box-sizing: border-box;
         }
         body {
-            font-family: 'Roboto', sans-serif;
+            font-family: var(--font-body);
             background:
                 radial-gradient(circle at top left, rgba(221, 226, 253, 0.22), transparent 28%),
                 linear-gradient(135deg, var(--background-start) 0%, #1029a0 55%, var(--background-end) 100%);
@@ -75,11 +80,12 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
             min-height: 100vh;
         }
         .logo {
+            font-family: var(--font-display);
             font-weight: 700;
             font-size: 28px;
             margin-bottom: 1.5rem;
             color: #bbc8fb;
-            letter-spacing: 0.02em;
+            letter-spacing: -0.02em;
         }
         .login-container {
             width: 100%;
@@ -95,8 +101,10 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
             backdrop-filter: blur(16px);
         }
         h1 {
-            font-size: 28px;
+            font-family: var(--font-display);
+            font-size: 30px;
             font-weight: 700;
+            letter-spacing: -0.04em;
             margin-top: 0;
             margin-bottom: 0.5rem;
             text-align: center;
@@ -105,15 +113,18 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
             text-align: center;
             margin-bottom: 2rem;
             color: var(--muted-text);
+            font-size: 0.98rem;
+            font-weight: 500;
         }
         .form-group {
             margin-bottom: 1.25rem;
         }
         label {
             display: block;
-            margin-bottom: 0.5rem;
-            font-weight: 500;
-            font-size: 14px;
+            margin-bottom: 0.55rem;
+            font-weight: 600;
+            font-size: 0.85rem;
+            letter-spacing: 0.02em;
             color: var(--text-color);
         }
         input[type="email"], input[type="password"] {
@@ -139,19 +150,23 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
         .submit-button {
             width: 100%;
             padding: 14px;
-            border: none;
+            border: 1px solid rgba(221, 226, 253, 0.16);
             background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
             color: white;
+            font-family: var(--font-display);
             font-weight: 700;
-            font-size: 16px;
-            border-radius: 12px;
+            font-size: 0.96rem;
+            letter-spacing: 0.04em;
+            text-transform: uppercase;
+            border-radius: 15px;
             cursor: pointer;
-            transition: transform 0.2s ease, box-shadow 0.2s ease;
-            box-shadow: 0 16px 30px rgba(19, 105, 179, 0.32);
+            transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
+            box-shadow: var(--button-shadow);
         }
         .submit-button:hover {
             transform: translateY(-1px);
-            box-shadow: 0 20px 34px rgba(19, 105, 179, 0.38);
+            box-shadow: 0 22px 38px rgba(11, 32, 131, 0.4);
+            filter: brightness(1.05);
         }
         .message {
             padding: 1rem;
@@ -176,6 +191,11 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['email'])) {
             font-size: 14px;
             color: var(--muted-text);
         }
+        .footer-link a,
+        .back-link a {
+            font-family: var(--font-display);
+            letter-spacing: 0.01em;
+        }
         .footer-link a {
             color: var(--primary-color);
             text-decoration: none;
diff --git a/register.php b/register.php
index 9e366bb..afbbe54 100644
--- a/register.php
+++ b/register.php
@@ -38,15 +38,31 @@ $email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);
 $first_name = filter_input(INPUT_POST, 'first_name', FILTER_SANITIZE_STRING);
 $last_name = filter_input(INPUT_POST, 'last_name', FILTER_SANITIZE_STRING);
 $company = filter_input(INPUT_POST, 'company', FILTER_SANITIZE_STRING);
-$how_did_you_hear = filter_input(INPUT_POST, 'how_did_you_hear', FILTER_SANITIZE_STRING);
+$how_did_you_hear = trim((string) filter_input(INPUT_POST, 'how_did_you_hear', FILTER_UNSAFE_RAW));
 $timezone = filter_input(INPUT_POST, 'timezone', FILTER_SANITIZE_STRING);
 
+$allowed_sources = [
+    'Social Media',
+    'LinkedIn',
+    'Reddit',
+    'Threads',
+    'Advertisement',
+    'ChatGPT',
+    'Flatlogic Community Discord',
+    'Other',
+];
+
 // --- VALIDATION ---
-if (!$first_name || !$last_name || !$email) {
+if (!$first_name || !$last_name || !$email || $how_did_you_hear === '') {
     echo json_encode(['success' => false, 'error' => 'Please fill out all required fields.']);
     exit;
 }
 
+if (!in_array($how_did_you_hear, $allowed_sources, true)) {
+    echo json_encode(['success' => false, 'error' => 'Please choose how you heard about this webinar from the list.']);
+    exit;
+}
+
 try {
     // --- CHECK IF ALREADY REGISTERED OR SOFT-DELETED -- - 
     $stmt = db()->prepare("SELECT id, deleted_at FROM attendees WHERE webinar_id = ? AND email = ?");
@@ -83,14 +99,14 @@ try {
         $host = $_SERVER['HTTP_HOST'];
         $logo_url = $protocol . '://' . $host . '/assets/pasted-20251030-095744-1b7c02ab.png';
         $subject = "Confirmation: You're Registered for Building Scalable Apps with AppWizzy";
-        $webinar_date_obj = new DateTime('2025-11-19 10:00:00', new DateTimeZone('America/New_York'));
+        $webinar_date_obj = new DateTime('2026-03-25 18:00:00', new DateTimeZone('Europe/Berlin'));
 
         // --- PREPARE CALENDAR LINK ---
         $event_title_cal = 'Building Scalable Apps with AppWizzy';
-        $event_description_cal = 'Professional Vibe-Coding Webinar. Join us to learn the fastest way to go from an idea to a working app you own.';
+        $event_description_cal = 'Professional Vibe-Coding Webinar. Join us on March 25th at 6PM CET | 12PM EDT | 9AM PDT to learn the fastest way to go from an idea to a working app you own.';
 
         // Use the same webinar date as in the email body
-        $webinar_date_for_cal = new DateTime('2025-11-19 10:00:00', new DateTimeZone('America/New_York'));
+        $webinar_date_for_cal = new DateTime('2026-03-25 18:00:00', new DateTimeZone('Europe/Berlin'));
         
         // Convert to UTC for Google Calendar
         $webinar_date_for_cal->setTimezone(new DateTimeZone('UTC'));
@@ -135,7 +151,7 @@ try {
                             <p style="font-size: 16px; line-height: 1.6;">We're excited to have you join us for this professional vibe-coding session.</p>
                             <div style="background-color: #f9f9f9; border-left: 4px solid #673ab7; padding: 15px 20px; margin: 20px 0;">
                                 <p style="margin: 0; font-size: 16px;"><strong>Webinar Details:</strong></p>
-                                <p style="margin: 10px 0 0; font-size: 16px;">{$webinar_date_obj->format('l, F j, Y')} | <strong>4PM CET</strong> | {$webinar_date_obj->format('g:i A T')}</p>
+                                <p style="margin: 10px 0 0; font-size: 16px;">{$webinar_date_obj->format('l, F j, Y')} | <strong>6PM CET</strong> | 12PM EDT | 9AM PDT</p>
                             </div>
                             <p style="font-size: 16px; line-height: 1.6;">You'll learn the fastest way to go from an idea to a working app you own, running on your server, with your database, using real frameworks.</p>
                             <p style="font-size: 16px; line-height: 1.6;"><strong>Your personal webinar access link will be emailed to you 1 day before the event.</strong></p>
@@ -163,14 +179,14 @@ HTML;
     }
 
     // --- PREPARE SUCCESS RESPONSE ---
-    $webinar_date = new DateTime('2025-11-19 10:00:00', new DateTimeZone('America/New_York'));
+    $webinar_date = new DateTime('2026-03-25 18:00:00', new DateTimeZone('Europe/Berlin'));
     $webinar_date->setTimezone(new DateTimeZone('UTC'));
     $start_time_utc = $webinar_date->format('Ymd\THis\Z');
     $webinar_date->add(new DateInterval('PT1H')); // Assume 1 hour duration
     $end_time_utc = $webinar_date->format('Ymd\THis\Z');
 
-    $event_title = 'Building Scalable Apps with AppWizzy at 4PM CET';
-    $event_description = 'Professional Vibe-Coding Webinar\n\nJoin us for this webinar at 4PM CET | 10AM EST | 7AM PST. The fastest way to go from an idea to a working app you own, running on your server, with your database, using real frameworks.';
+    $event_title = 'Building Scalable Apps with AppWizzy at 6PM CET';
+    $event_description = 'Professional Vibe-Coding Webinar\n\nJoin us for this webinar on March 25th at 6PM CET | 12PM EDT | 9AM PDT. The fastest way to go from an idea to a working app you own, running on your server, with your database, using real frameworks.';
 
     $google_link = 'https://www.google.com/calendar/render?action=TEMPLATE&text=' . urlencode($event_title) . '&dates=' . $start_time_utc . '/' . $end_time_utc . '&details=' . urlencode($event_description) . '&location=' . urlencode('Online') . '&ctz=UTC';