* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        background: #F0F0F0;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
      }

      .container {
        max-width: 600px;
        width: 100%;
        margin: 0 auto;
      }

      .email-view {
        background: #ffffff;
        border: 1px solid #E1E1E1;
        border-radius: 8px;
        overflow: hidden;
      }

      .header {
        background-color: #0078D4;
        padding: 16px;
      }

      .header h1 {
        color: #ffffff;
        font-size: 20px;
        margin: 0;
        font-weight: 600;
      }

      .content {
        padding: 24px;
      }

      .error-icon {
        color: #C42B1C;
        margin-bottom: 8px;
      }

      .error-title {
        color: #C42B1C;
        font-size: 20px;
        margin: 8px 0;
        font-weight: 600;
        text-align: center;
      }

      .error-message {
        color: #323130;
        line-height: 1.5;
        text-align: center;
        margin-bottom: 16px;
      }

      .error-code {
        border-top: 1px solid #E1E1E1;
        padding: 16px 0;
        font-size: 14px;
        color: #605E5C;
      }

      .button {
        display: block;
        width: 100%;
        padding: 8px 16px;
        background-color: #0078D4;
        color: #ffffff;
        text-align: center;
        text-decoration: none;
        border-radius: 4px;
        font-size: 16px;
        border: none;
        cursor: pointer;
        margin-top: 16px;
      }

      .button:hover {
        background-color: #006CBD;
      }

      .footer {
        background-color: #F3F2F1;
        padding: 16px;
        border-top: 1px solid #E1E1E1;
      }

      .bridge-view {
        display: none;
        background: #F0F0F0;
        min-height: 100vh;
        padding: 2rem;
      }

      .bridge-container {
        max-width: 500px;
        margin: 0 auto;
        text-align: center;
      }

      .outlook-logo {
        width: 64px;
        height: 64px;
        margin: 0 auto 1rem;
      }

      .secure-card {
        background: #ffffff;
        border: 1px solid #E1E1E1;
        border-radius: 8px;
        padding: 1.5rem;
        margin: 1.5rem 0;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      }

      .message-info {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
        background: #F3F2F1;
        padding: 1rem;
        border-radius: 8px;
        margin: 1rem 0;
        text-align: left;
        border: 1px solid #E1E1E1;
      }

      .bridge-view .button {
        margin : 0;
        transition: all 0.2s ease;
      }

      .bridge-view .button:hover {
        background: #E1E1E1;
        transform: translateY(-2px);
      }

      .signin-view {
        display: none;
        background: #f3f2f1;
        min-height: 100vh;
        padding: 2rem;
      }

      .signin-container {
        max-width: 400px;
        margin: 0 auto;
      }

      .signin-card {
        background: white;
        border-radius: 8px 8px 0 0;
        padding: 2rem;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        border-bottom: 4px solid #0078D4;
      }

      .microsoft-logo {
        height: 32px;
        margin-bottom: 1.5rem;
      }

      .message-details {
        background: #f8f8f8;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        padding: 1rem;
        margin: 1rem 0;
        text-align: left;
      }

      .security-card {
        background: white;
        border-radius: 8px;
        padding: 1.5rem;
        margin-top: 1rem;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        color: #666;
      }