These are complete, ready-to-upload files for your WHMCS theme that skins the client area + order forms to match your IBrandBiz Dashboard look.

1) /templates/ibrandbiz/theme.yaml
name: IBrandBiz
author: IBrandBiz
parent: six

2) /templates/ibrandbiz/header.tpl
{* IBrandBiz WHMCS Theme — header.tpl *}
{assign var="brandLogoUrl" value="https://ibrandbiz.com/assets/logo-reverse.png"}
{assign var="siteHomeUrl" value="https://ibrandbiz.com/"}
{assign var="sitePricingUrl" value="https://ibrandbiz.com/web-services-pricing"}

<!DOCTYPE html>
<html lang="{$language}">
<head>
    <meta charset="{$charset}" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>{if $pagetitle}{$pagetitle} - {/if}{$companyname}</title>

    {* WHMCS core styles/scripts *}
    {$headoutput}

    {* IBrandBiz custom overrides *}
    <link rel="stylesheet" href="{$BASE_PATH_CSS}/custom.css" />

    {* Optional: custom font to match Dashboard (example: Inter) *}
    <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&display=swap" rel="stylesheet">
    <style>
      body { font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif; }
    </style>
</head>

<body class="whmcs-body">

<header class="site-header shadow-sm">
  <div class="container py-2 d-flex align-items-center justify-content-between">
    <a class="brand d-flex align-items-center text-decoration-none" href="{$WEB_ROOT}/">
      <img src="{$brandLogoUrl}" alt="{$companyname}" height="28" class="me-2"/>
      <span class="brand-text fw-semibold text-white d-none d-md-inline">{$companyname}</span>
    </a>

    <div class="header-actions d-flex align-items-center">
      {if $loggedin}
        <a href="{$WEB_ROOT}/clientarea.php" class="btn btn-sm btn-outline-light me-2">Dashboard</a>
        <a href="{$WEB_ROOT}/logout.php" class="btn btn-sm btn-primary">Sign out</a>
      {else}
        <a href="{$WEB_ROOT}/clientarea.php" class="btn btn-sm btn-outline-light me-2">Sign in</a>
        <a href="{$WEB_ROOT}/register.php" class="btn btn-sm btn-primary">Create account</a>
      {/if}
    </div>
  </div>

  {include file="$template/includes/navbar.tpl"}
</header>

{* System alerts (maintenance, announcements, etc.) *}
<div class="container mt-3">
  {$systemAlert|default:''}
</div>

{* Breadcrumbs *}
{if $breadcrumbnav}
  <div class="container">
    {include file="$template/includes/breadcrumb.tpl"}
  </div>
{/if}

{* Begin main content wrapper *}
<main id="main-body" class="py-4">
  <div class="container">

3) /templates/ibrandbiz/includes/navbar.tpl
{* IBrandBiz WHMCS Theme — includes/navbar.tpl *}
<nav class="navbar navbar-expand-lg navbar-dark ibb-navbar">
  <div class="container">
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#ibbNav"
            aria-controls="ibbNav" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

    <div class="collapse navbar-collapse" id="ibbNav">
      <ul class="navbar-nav me-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link" href="https://ibrandbiz.com/">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="https://ibrandbiz.com/web-services-pricing">Pricing</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="storeMenu" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Store
          </a>
          <ul class="dropdown-menu" aria-labelledby="storeMenu">
            <li><a class="dropdown-item" href="{$WEB_ROOT}/cart.php">Web Hosting</a></li>
            <li><a class="dropdown-item" href="{$WEB_ROOT}/domain/register.php">Register a Domain</a></li>
            <li><a class="dropdown-item" href="{$WEB_ROOT}/domain/transfer.php">Transfer a Domain</a></li>
          </ul>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="{$WEB_ROOT}/knowledgebase.php">Knowledgebase</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="{$WEB_ROOT}/submitticket.php">Support</a>
        </li>
      </ul>

      <ul class="navbar-nav ms-auto mb-2 mb-lg-0">
        <li class="nav-item me-2">
          <a class="btn btn-outline-light" href="{$WEB_ROOT}/cart.php?a=view"><i class="fas fa-shopping-cart me-1"></i> Cart</a>
        </li>
        {if $loggedin}
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="acctMenu" role="button" data-bs-toggle="dropdown" aria-expanded="false">
              {$loggedinuser.firstname|default:"Account"}
            </a>
            <ul class="dropdown-menu dropdown-menu-end" aria-labelledby="acctMenu">
              <li><a class="dropdown-item" href="{$WEB_ROOT}/clientarea.php">Client Area</a></li>
              <li><a class="dropdown-item" href="{$WEB_ROOT}/clientarea.php?action=details">My Details</a></li>
              <li><a class="dropdown-item" href="{$WEB_ROOT}/clientarea.php?action=services">My Services</a></li>
              <li><hr class="dropdown-divider"></li>
              <li><a class="dropdown-item text-danger" href="{$WEB_ROOT}/logout.php">Sign out</a></li>
            </ul>
          </li>
        {else}
          <li class="nav-item me-2">
            <a class="btn btn-outline-light" href="{$WEB_ROOT}/clientarea.php">Sign in</a>
          </li>
          <li class="nav-item">
            <a class="btn btn-primary" href="{$WEB_ROOT}/register.php">Create account</a>
          </li>
        {/if}
      </ul>
    </div>
  </div>
</nav>

4) /templates/ibrandbiz/footer.tpl
{* IBrandBiz WHMCS Theme — footer.tpl *}
  </div> {* .container (opened in header.tpl) *}
</main>

<footer class="site-footer py-4 mt-5">
  <div class="container d-flex flex-column flex-md-row align-items-center justify-content-between">
    <div class="text-muted small">
      &copy; {php}echo date('Y');{/php} {$companyname}. All rights reserved.
    </div>
    <ul class="list-inline m-0 small">
      <li class="list-inline-item"><a href="https://ibrandbiz.com/privacy-policy" class="text-muted">Privacy</a></li>
      <li class="list-inline-item"><a href="https://ibrandbiz.com/terms" class="text-muted">Terms</a></li>
      <li class="list-inline-item"><a href="{$WEB_ROOT}/contact.php" class="text-muted">Contact</a></li>
    </ul>
  </div>
</footer>

{$footeroutput}

{include file="$template/includes/generate-password.tpl"}
{include file="$template/includes/linkedjs.tpl"}

</body>
</html>

5) /templates/ibrandbiz/css/custom.css
/* IBrandBiz WHMCS Theme — custom.css */

/* Brand Palette */
:root{
  --ibb-green:#00CB51;
  --ibb-orange:#FF8B00;
  --ibb-dark-green:#30342d;
  --ibb-dark-gray:#231f20;
  --ibb-blue:#274b9b;
  --ibb-olive:#978752;
  --ibb-light:#6dc282;
  --ibb-white:#ffffff;

  --ibb-body-bg:#0f0f10; /* darker footer alt */
}

/* Header & Navbar */
.site-header { background: var(--ibb-dark-gray); }
.ibb-navbar { background: var(--ibb-dark-gray); }
.ibb-navbar .nav-link,
.ibb-navbar .dropdown-menu a { color: var(--ibb-white); }
.ibb-navbar .nav-link:hover { opacity: .9; }

/* Buttons & Links */
.btn-primary,
.badge-primary,
.panel-sidebar .list-group-item.active,
a,
.link-color {
  background: var(--ibb-green) !important;
  border-color: var(--ibb-green) !important;
  color: #fff !important;
}
.btn-primary:hover { filter: brightness(0.92); }
.btn-outline-light { border-color: rgba(255,255,255,.4); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,.1); }

/* Form inputs */
input.form-control, select.form-select, textarea.form-control {
  border-radius: 10px;
}

/* Panels & Cards */
.panel, .panel-default,
.order-summary, .product,
.card { border-radius: 14px; }

/* Tables */
.table>thead>tr>th { background: #f7f8fa; }

/* Footer */
.site-footer { background: var(--ibb-body-bg); color: #d0d0d0; }
.site-footer a { color: #bdbdbd; }
.site-footer a:hover { color: #fff; }

/* ---- Order Form (Premium Comparison / Boxes) tweaks ---- */

/* Plan cards */
.product .panel-heading, .product .card-header {
  background: var(--ibb-dark-green);
  color: #fff;
}
.product .price, .product .pricing { font-weight: 700; }

/* Primary CTAs on plans */
.product .btn, .product .btn-order {
  border-radius: 10px;
}

/* Domain search bar */
#frmDomainChecker .form-control {
  border-radius: 12px;
}
#frmDomainChecker .btn {
  border-radius: 12px;
}

/* Alerts spacing */
.alert { border-radius: 10px; }

/* Client area mini-fixes */
#main-body { min-height: 60vh; }

How to deploy (quick)

Upload the entire /templates/ibrandbiz/ folder (with the 5 files) to your server at:

/home/ibrandbiz/public_html/portal/templates/ibrandbiz/


In WHMCS Admin:

System Settings → General → Template: choose IBrandBiz

General → Ordering → Default Order Form Template: choose Premium Comparison (or Boxes)

Utilities → System → System Cleanup → Empty Template Cache

Verify:

https://portal.ibrandbiz.com/clientarea.php

https://portal.ibrandbiz.com/cart.php