Premium Modern Login Form | Code

Live Preview Premium Modern Login Form
                        <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Premium Login</title>
<link href="https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap" rel="stylesheet">
<link rel="stylesheet" href="style.css">
</head>
<body>

<div class="container">
    <div class="form-box">

        <div class="toggle-buttons">
            <button id="loginBtn" class="active">Sign In</button>
            <button id="registerBtn">Sign Up</button>
        </div>

        <div class="social-login">
            <button class="social google">
                <span>????</span> Continue with Google
            </button>
            <button class="social github">
                <span>⚫</span> Continue with GitHub
            </button>
        </div>

        <div class="divider">OR</div>

        <form id="authForm">
            <div class="input-group">
                <span>????</span>
                <input type="email" placeholder="Email Address" required>
            </div>

            <div class="input-group">
                <span>????</span>
                <input type="password" placeholder="Password" required>
            </div>

            <div class="extra-field hidden">
                <div class="input-group">
                    <span>????</span>
                    <input type="text" placeholder="Full Name">
                </div>
            </div>

            <button type="submit" class="submit-btn">Login</button>
        </form>

    </div>
</div>

<script src="script.js"></script>
</body>
</html>
                    

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

body {
    font-family: 'Poppins', sans-serif;
    height: 100vh;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 420px;
}

.form-box {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    color: #fff;
    box-shadow: 0 15px 40px rgba(0,0,0,0.3);
    animation: fadeIn 0.8s ease;
}

.toggle-buttons {
    display: flex;
    justify-content: space-between;
    margin-bottom: 25px;
}

.toggle-buttons button {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: 0.3s;
}

.toggle-buttons button.active {
    border-color: #fff;
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social {
    padding: 12px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: 0.3s;
}

.google {
    background: #fff;
    color: #333;
}

.github {
    background: #000;
    color: #fff;
}

.social:hover {
    transform: translateY(-3px);
}

.divider {
    text-align: center;
    margin: 20px 0;
    font-size: 14px;
    opacity: 0.8;
}

.input-group {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.15);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 15px;
}

.input-group span {
    margin-right: 10px;
}

.input-group input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    width: 100%;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: none;
    font-weight: 600;
    background: #fff;
    color: #333;
    cursor: pointer;
    transition: 0.3s;
}

.submit-btn:hover {
    background: #f0f0f0;
}

.hidden {
    display: none;
}

@keyframes fadeIn {
    from {opacity: 0; transform: translateY(20px);}
    to {opacity: 1; transform: translateY(0);}
}
                    

                        const loginBtn = document.getElementById("loginBtn");
const registerBtn = document.getElementById("registerBtn");
const extraField = document.querySelector(".extra-field");
const submitBtn = document.querySelector(".submit-btn");

loginBtn.addEventListener("click", () => {
    loginBtn.classList.add("active");
    registerBtn.classList.remove("active");
    extraField.classList.add("hidden");
    submitBtn.textContent = "Login";
});

registerBtn.addEventListener("click", () => {
    registerBtn.classList.add("active");
    loginBtn.classList.remove("active");
    extraField.classList.remove("hidden");
    submitBtn.textContent = "Create Account";
});
                    