<div class="split-screen">
  <div class="left-pane">
    <div class="welcome-text">
      <h1>Welcome Back</h1>
      <p>We are glad to see you again.</p>
    </div>
  </div>
  <div class="right-pane">
    <form class="login-form">
      <h2>Sign In</h2>
      <div class="input-group">
        <label>Email Address</label>
        <input type="email" placeholder="name@example.com">
      </div>
      <div class="input-group">
        <label>Password</label>
        <input type="password" placeholder="••••••••">
      </div>
      <button type="submit" class="login-btn">Login</button>
    </form>
  </div>
</div>

* {
  box-sizing: border-box;
}
.split-screen {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  display: flex;
  min-height: 500px;
  height: 100vh;
  background: #fff;
}
.left-pane {
  flex: 1;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}
.right-pane {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.login-form {
  width: 100%;
  max-width: 350px;
}
.login-form h2 {
  font-size: 2rem;
  margin-bottom: 30px;
  color: #1f2937;
}
.input-group {
  margin-bottom: 20px;
}
.input-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #4b5563;
}
.input-group input {
  width: 100%;
  padding: 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s;
}
.input-group input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.login-btn {
  width: 100%;
  padding: 12px;
  background: #111827;
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.login-btn:hover {
  background: #000;
}
@media (max-width: 768px) {
  .split-screen {
    flex-direction: column;
  }
  .left-pane {
    display: none;
  }
}