Bootstrap 5 Split Login Page with Brand Panel

<section class="wdw-stage">
  <div class="container" style="max-width: 980px">
    <div class="wdw-card overflow-hidden">
      <div class="row g-0">
        <div class="col-lg-5 wdw-aurora d-flex flex-column justify-content-between p-4 p-lg-5 login-side">
          <div class="d-flex align-items-center gap-2 fw-bold fs-5">
            <span class="login-logo" aria-hidden="true">
              <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 3l8 4.5v9L12 21l-8-4.5v-9z"/><path d="M12 12l8-4.5M12 12v9M12 12L4 7.5"/></svg>
            </span>
            Northwind
          </div>
          <div class="my-5 my-lg-0">
            <h2 class="fw-bold mb-3 lh-sm">Your whole team,<br>one place to work.</h2>
            <p class="mb-4 login-side-text">Pick up exactly where you left off with projects, messages and files in sync.</p>
            <div class="d-flex align-items-center gap-3">
              <div class="d-flex login-avatars">
                <img src="https://i.pravatar.cc/80?img=12" alt="" width="36" height="36">
                <img src="https://i.pravatar.cc/80?img=32" alt="" width="36" height="36">
                <img src="https://i.pravatar.cc/80?img=47" alt="" width="36" height="36">
              </div>
              <span class="small login-side-text">Joined by 12,000+ professionals</span>
            </div>
          </div>
        </div>
        <div class="col-lg-7 p-4 p-md-5">
          <form class="mx-auto" style="max-width: 380px" novalidate>
            <h1 class="h2 wdw-heading mb-1">Welcome back</h1>
            <p class="wdw-muted mb-4">Sign in to your account to continue.</p>
            <div class="form-floating mb-3">
              <input type="text" class="form-control" id="loginId" placeholder="Email or phone" autocomplete="username" required>
              <label for="loginId">Email or phone</label>
            </div>
            <div class="form-floating mb-2">
              <input type="password" class="form-control" id="loginPass" placeholder="Password" autocomplete="current-password" required>
              <label for="loginPass">Password</label>
            </div>
            <div class="text-end mb-4"><a href="#" class="small fw-semibold text-decoration-none">Forgot password?</a></div>
            <div class="d-grid gap-2 d-sm-flex">
              <button type="submit" class="btn btn-primary rounded-pill flex-fill">Sign in</button>
              <button type="button" class="btn btn-outline-primary rounded-pill flex-fill">Create account</button>
            </div>
            <nav class="d-flex flex-wrap mt-5 pt-4 border-top small login-legal" aria-label="Legal">
              <a href="#">User agreement</a><a href="#">Privacy policy</a><a href="#">Cookie policy</a><a href="#">Community guidelines</a>
            </nav>
            <p class="small wdw-muted mt-3 mb-0">© 2026 Northwind</p>
          </form>
        </div>
      </div>
    </div>
  </div>
</section>

/* Web Designer Wall library style — shared base for every Bootstrap 5 snippet.
   Indigo accent, Plus Jakarta Sans, soft cards, pill buttons. Works in light and dark. */
@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");

:root,
[data-bs-theme="light"] {
  --wdw-font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bs-body-font-family: var(--wdw-font);
  --bs-primary: #4f46e5;
  --bs-primary-rgb: 79, 70, 229;
  --bs-primary-text-emphasis: #3730a3;
  --bs-primary-bg-subtle: #eef2ff;
  --bs-primary-border-subtle: #c7d2fe;
  --bs-link-color: #4f46e5;
  --bs-link-color-rgb: 79, 70, 229;
  --bs-link-hover-color: #4338ca;
  --bs-link-hover-color-rgb: 67, 56, 202;
  --bs-focus-ring-color: rgba(79, 70, 229, 0.25);
  --bs-border-radius: 0.75rem;
  --bs-border-radius-lg: 1rem;
  --bs-border-radius-xl: 1.25rem;
  --wdw-radius-card: 1.25rem;
  --wdw-shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 16px 40px -16px rgba(16, 24, 40, 0.22);
  --wdw-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 12px -4px rgba(16, 24, 40, 0.12);
  --wdw-stage: #f5f6fb;
}

[data-bs-theme="dark"] {
  --bs-primary: #818cf8;
  --bs-primary-rgb: 129, 140, 248;
  --bs-primary-text-emphasis: #c7d2fe;
  --bs-primary-bg-subtle: rgba(129, 140, 248, 0.14);
  --bs-primary-border-subtle: rgba(129, 140, 248, 0.35);
  --bs-link-color: #a5b4fc;
  --bs-link-color-rgb: 165, 180, 252;
  --bs-link-hover-color: #c7d2fe;
  --bs-link-hover-color-rgb: 199, 210, 254;
  --bs-focus-ring-color: rgba(129, 140, 248, 0.35);
  --wdw-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 40px -16px rgba(0, 0, 0, 0.7);
  --wdw-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px -4px rgba(0, 0, 0, 0.5);
  --wdw-stage: #0f1117;
}

body { font-family: var(--wdw-font); -webkit-font-smoothing: antialiased; }

/* Bootstrap compiles its blue into these components; point them at the accent. */
.btn-primary {
  --bs-btn-bg: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
  --bs-btn-hover-bg: #4338ca; --bs-btn-hover-border-color: #4338ca;
  --bs-btn-active-bg: #3730a3; --bs-btn-active-border-color: #3730a3;
  --bs-btn-disabled-bg: var(--bs-primary); --bs-btn-disabled-border-color: var(--bs-primary);
  --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
[data-bs-theme="dark"] .btn-primary { --bs-btn-color: #0f1117; --bs-btn-hover-bg: #a5b4fc; --bs-btn-hover-border-color: #a5b4fc; --bs-btn-hover-color: #0f1117; --bs-btn-active-color: #0f1117; }
.btn-outline-primary {
  --bs-btn-color: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
  --bs-btn-hover-bg: var(--bs-primary); --bs-btn-hover-border-color: var(--bs-primary);
  --bs-btn-active-bg: var(--bs-primary); --bs-btn-active-border-color: var(--bs-primary);
  --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
.btn { --bs-btn-font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; }
.btn-sm { min-height: 36px; }
.form-control, .form-select { min-height: 44px; border-radius: .75rem; }
.form-control:focus, .form-select:focus, .form-check-input:focus { border-color: rgba(var(--bs-primary-rgb), .6); box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.form-check-input:checked { background-color: var(--bs-primary); border-color: var(--bs-primary); }
.nav-pills { --bs-nav-pills-link-active-bg: var(--bs-primary); }
.nav { --bs-nav-link-color: var(--bs-secondary-color); --bs-nav-link-hover-color: var(--bs-emphasis-color); }
.pagination { --bs-pagination-active-bg: var(--bs-primary); --bs-pagination-active-border-color: var(--bs-primary); --bs-pagination-color: var(--bs-body-color); --bs-pagination-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.progress, .progress-stacked { --bs-progress-bar-bg: var(--bs-primary); }
.list-group { --bs-list-group-active-bg: var(--bs-primary); --bs-list-group-active-border-color: var(--bs-primary); }
.dropdown-menu { --bs-dropdown-link-active-bg: var(--bs-primary); border-radius: .875rem; box-shadow: var(--wdw-shadow-sm); }
.accordion { --bs-accordion-active-bg: var(--bs-primary-bg-subtle); --bs-accordion-active-color: var(--bs-primary-text-emphasis); --bs-accordion-btn-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.badge { font-weight: 600; }

/* Library building blocks — use these instead of re-inventing them per snippet. */
.wdw-stage { min-height: 100vh; display: flex; align-items: center; background: var(--wdw-stage); padding-block: 3rem; }
.wdw-card { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: var(--wdw-radius-card); box-shadow: var(--wdw-shadow); }
.wdw-card-sm { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: 1rem; box-shadow: var(--wdw-shadow-sm); }
.wdw-aurora { position: relative; color: #fff; background: radial-gradient(60% 55% at 100% 0, #818cf8 0, transparent 70%), radial-gradient(65% 60% at 0 100%, #ec4899 0, transparent 65%), #1e1b4b; }
.wdw-eyebrow { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--bs-primary); }
.wdw-heading { font-weight: 800; letter-spacing: -.02em; color: var(--bs-emphasis-color); }
.wdw-muted { color: var(--bs-secondary-color); }
.wdw-icon { width: 2.75rem; height: 2.75rem; flex: none; display: inline-flex; align-items: center; justify-content: center; border-radius: .875rem; background: var(--bs-primary-bg-subtle); color: var(--bs-primary); }

/* Component */
.login-side { min-height: 360px; }
.login-logo { width: 2.25rem; height: 2.25rem; display: inline-flex; align-items: center; justify-content: center; border-radius: .7rem; background: rgba(255,255,255,.16); }
.login-side-text { color: rgba(255,255,255,.78); }
.login-avatars img { border-radius: 50%; border: 2px solid #1e1b4b; margin-left: -.6rem; }
.login-avatars img:first-child { margin-left: 0; }
.login-legal { column-gap: 1rem; row-gap: .25rem; }
.login-legal a { color: var(--bs-secondary-color); text-decoration: none; }
.login-legal a:hover { color: var(--bs-primary); text-decoration: underline; }

function initLoginForm() {
  const form = document.querySelector('.wdw-stage form');
  if (!form) return;
  form.addEventListener('submit', (e) => {
    e.preventDefault();
    form.classList.add('was-validated');
  });
}
initLoginForm();