cv-site/internal/services/email_theme.go

package services

// CVEmailTheme provides a custom Hermes theme matching the CV's aesthetic
// Features:
// - Clean, minimal design with professional typography
// - Green accent color (#27ae60) matching CV highlights
// - Bracket aesthetic { } for headers
// - Responsive layout for all devices
// - Dark mode support via @media queries

// CVThemeCSS returns the CSS for the CV email theme
func CVThemeCSS() string {
	return `
/* CV Email Theme - Responsive & Clean */

/* Reset and Base */
body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Quicksand', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333333;
  background-color: #f5f5f5;
}

/* Container */
.email-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

.email-wrapper {
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

/* Header */
.email-header {
  background: linear-gradient(135deg, #2b2b2b 0%, #1a1a1a 100%);
  padding: 30px 40px;
  text-align: center;
}

.email-logo {
  color: #ffffff;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin: 0;
}

.email-logo .bracket {
  color: #27ae60;
  font-weight: 700;
}

/* Body */
.email-body {
  padding: 40px;
}

.email-greeting {
  font-size: 20px;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 20px;
}

.email-intro {
  font-size: 16px;
  color: #444444;
  margin-bottom: 30px;
  line-height: 1.7;
}

/* Content Card */
.content-card {
  background-color: #fafafa;
  border-left: 4px solid #27ae60;
  border-radius: 0 6px 6px 0;
  padding: 25px;
  margin: 25px 0;
}

.content-card-header {
  font-size: 14px;
  font-weight: 600;
  color: #27ae60;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 15px;
}

/* Data Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table tr {
  border-bottom: 1px solid #eeeeee;
}

.data-table tr:last-child {
  border-bottom: none;
}

.data-table td {
  padding: 12px 0;
  vertical-align: top;
}

.data-table .label {
  font-weight: 600;
  color: #666666;
  width: 100px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.data-table .value {
  color: #333333;
  font-size: 15px;
}

/* Message Box */
.message-box {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 20px;
  margin-top: 15px;
  font-size: 15px;
  line-height: 1.7;
  color: #333333;
  white-space: pre-wrap;
}

/* Metadata */
.email-metadata {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #eeeeee;
  font-size: 12px;
  color: #999999;
}

.email-metadata span {
  display: inline-block;
  margin-right: 20px;
}

/* Footer */
.email-footer {
  background-color: #fafafa;
  padding: 30px 40px;
  text-align: center;
  border-top: 1px solid #eeeeee;
}

.email-footer-text {
  font-size: 13px;
  color: #888888;
  margin: 0;
}

.email-footer-link {
  color: #27ae60;
  text-decoration: none;
}

.email-footer-link:hover {
  text-decoration: underline;
}

/* Bracket Decoration */
.bracket-wrap {
  display: inline;
}

.bracket-wrap::before {
  content: '{ ';
  color: #27ae60;
  font-weight: 700;
}

.bracket-wrap::after {
  content: ' }';
  color: #27ae60;
  font-weight: 700;
}

/* Responsive */
@media only screen and (max-width: 600px) {
  .email-container {
    padding: 10px;
  }

  .email-header {
    padding: 25px 20px;
  }

  .email-body {
    padding: 25px 20px;
  }

  .email-footer {
    padding: 20px;
  }

  .content-card {
    padding: 20px 15px;
  }

  .data-table .label {
    display: block;
    padding-bottom: 4px;
  }

  .data-table .value {
    display: block;
    padding-bottom: 8px;
  }
}

/* Dark Mode: Disabled via "light only" color-scheme meta tag
 * Gmail iOS aggressively inverts colors in dark mode, ignoring CSS.
 * Using "light only" forces consistent rendering across all clients.
 * See: https://www.hteumeuleu.com/2021/emails-react-to-dark-mode/
 */
`
}

// ContactEmailHTMLTemplate returns the HTML template for contact form emails
// Note: Uses "light only" color scheme to prevent Gmail iOS dark mode from
// inverting colors unpredictably. This ensures consistent appearance across all clients.
func ContactEmailHTMLTemplate() string {
	return `<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <!-- Prevent Gmail dark mode color inversion -->
  <meta name="color-scheme" content="light only">
  <meta name="supported-color-schemes" content="light only">
  <title>New Contact Form Message</title>
  <style>
    :root { color-scheme: light only; }
` + CVThemeCSS() + `
  </style>
</head>
<body>
  <div class="email-container">
    <div class="email-wrapper">
      <!-- Header -->
      <div class="email-header">
        <h1 class="email-logo"><span class="bracket">{</span> CV Contact <span class="bracket">}</span></h1>
      </div>

      <!-- Body -->
      <div class="email-body">
        <p class="email-greeting">New message received</p>
        <p class="email-intro">
          Someone has sent you a message through your CV contact form.
        </p>

        <!-- Contact Details Card -->
        <div class="content-card">
          <div class="content-card-header">Contact Details</div>
          <table class="data-table">
            <tr>
              <td class="label">From</td>
              <td class="value">{{.Name}}</td>
            </tr>
            <tr>
              <td class="label">Email</td>
              <td class="value"><a href="mailto:{{.Email}}" style="color: #27ae60; text-decoration: none;">{{.Email}}</a></td>
            </tr>
            {{if .Company}}
            <tr>
              <td class="label">Company</td>
              <td class="value">{{.Company}}</td>
            </tr>
            {{end}}
            {{if .Subject}}
            <tr>
              <td class="label">Subject</td>
              <td class="value">{{.Subject}}</td>
            </tr>
            {{end}}
          </table>
        </div>

        <!-- Message Card -->
        <div class="content-card">
          <div class="content-card-header">Message</div>
          <div class="message-box">{{.Message}}</div>
        </div>

        <!-- Metadata -->
        <div class="email-metadata">
          <span>IP: {{.IP}}</span>
          <span>Time: {{.Time.Format "Jan 02, 2006 at 15:04 MST"}}</span>
        </div>
      </div>

      <!-- Footer -->
      <div class="email-footer">
        <p class="email-footer-text">
          This email was sent from your CV contact form.<br>
          <a href="https://juan.andres.morenorub.io" class="email-footer-link">juan.andres.morenorub.io</a>
        </p>
      </div>
    </div>
  </div>
</body>
</html>`
}

// ContactEmailPlainTemplate returns the plain text template for contact form emails
func ContactEmailPlainTemplate() string {
	return `
═══════════════════════════════════════════════════════════════
                      { CV CONTACT }
═══════════════════════════════════════════════════════════════

NEW MESSAGE RECEIVED
────────────────────────────────────────────────────────────────

CONTACT DETAILS
───────────────
From:     {{.Name}}
Email:    {{.Email}}
{{if .Company}}Company:  {{.Company}}
{{end}}{{if .Subject}}Subject:  {{.Subject}}
{{end}}

MESSAGE
───────────────
{{.Message}}

────────────────────────────────────────────────────────────────
IP: {{.IP}}
Time: {{.Time.Format "Jan 02, 2006 at 15:04 MST"}}
────────────────────────────────────────────────────────────────
Sent from: juan.andres.morenorub.io
═══════════════════════════════════════════════════════════════
`
}