A Code by alejandrokundrah

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Login Form</title>
    
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
    
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css">
    
    <link href="https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap" rel="stylesheet">
    
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="container-fluid min-vh-100 d-flex align-items-center justify-content-center">
        
        <div class="login-container">
            <div class="row g-0 h-100">
                
                <div class="col-lg-6 illustration-section">
                    <div class="illustration">
                        <div class="arch"></div>
                        <div class="illustration-image">
                            <i class="fas fa-user-circle illustration-icon"></i>
                        </div>
                        <div class="floating-elements">
                            <div class="floating-circle circle-1"></div>
                            <div class="floating-circle circle-2"></div>
                            <div class="floating-circle circle-3"></div>
                        </div>
                    </div>
                </div>

<div class="col-lg-6 form-section">
                    <div class="form-container">
                        <div class="form-header">
                            <h2 class="welcome-title">Welcome Back!</h2>
                            <p class="welcome-subtitle">Please sign in to your account</p>
                        </div>

<form class="login-form">
                            
                            <div class="form-group">
                                <label class="form-label">Email Address</label>
                                <div class="input-group">
                                    <span class="input-group-text">
                                        <i class="fas fa-envelope"></i>
                                    </span>
                                    <input type="email" class="form-control" placeholder="Enter your email" required>
                                </div>
                            </div>

<div class="form-group">
                                <label class="form-label">Password</label>
                                <div class="input-group">
                                    <span class="input-group-text">
                                        <i class="fas fa-lock"></i>
                                    </span>
                                    <input type="password" class="form-control" id="password" placeholder="Enter your password" required>
                                    <span class="input-group-text password-toggle" onclick="togglePassword()">
                                        <i class="fas fa-eye" id="toggleEye"></i>
                                    </span>
                                </div>
                            </div>

<div class="form-options">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" id="rememberMe">
                                    <label class="form-check-label" for="rememberMe">
                                        Remember me
                                    </label>
                                </div>
                                <a href="#" class="forgot-password">Forgot Password?</a>
                            </div>

<button type="submit" class="login-btn">
                                <span>Sign In</span>
                                <i class="fas fa-arrow-right"></i>
                            </button>

<div class="divider">
                                <span>or continue with</span>
                            </div>

<div class="social-login">
                                <button type="button" class="social-btn google-btn">
                                    <i class="fab fa-google"></i>
                                    <span>Google</span>
                                </button>
                                <button type="button" class="social-btn facebook-btn">
                                    <i class="fab fa-facebook-f"></i>
                                    <span>Facebook</span>
                                </button>
                                <button type="button" class="social-btn apple-btn">
                                    <i class="fab fa-apple"></i>
                                    <span>Apple</span>
                                </button>
                            </div>

<div class="signup-link">
                                Don't have an account? <a href="#" class="signup-text">Sign up here</a>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
    
    <script src="script.js"></script>
</body>
</html>

CSS

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f8fafc;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --error-color: #ef4444;
    --success-color: #10b981;
    --white: #ffffff;
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.container-fluid {
    padding: 20px;
}

.login-container {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-large);
    overflow: hidden;
    max-width: 1000px;
    width: 100%;
    min-height: 600px;
    position: relative;
    animation: slideUp 0.8s ease-out;
}

/* Illustration Section */
.illustration-section {
    position: relative;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 600px;
}

.illustration {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    overflow: hidden;
}

.arch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 150px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0 0 50% 50%;
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.illustration-icon {
    font-size: 120px;
    color: var(--white);
    opacity: 0.9;
    animation: pulse 2s ease-in-out infinite;
    z-index: 2;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.floating-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.circle-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation: float 4s ease-in-out infinite;
}

.circle-2 {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 15%;
    animation: float 5s ease-in-out infinite reverse;
}

.circle-3 {
    width: 40px;
    height: 40px;
    bottom: 20%;
    left: 20%;
    animation: float 3s ease-in-out infinite;
}

/* Form Section */
.form-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    min-height: 600px;
}

.form-container {
    width: 100%;
    max-width: 400px;
}

.form-header {
    text-align: center;
    margin-bottom: 40px;
}

.welcome-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    animation: slideUp 0.8s ease-out 0.2s both;
}

.welcome-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 400;
    animation: slideUp 0.8s ease-out 0.4s both;
}

.login-form {
    animation: slideUp 0.8s ease-out 0.6s both;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.input-group {
    position: relative;
    display: flex;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.input-group:focus-within {
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

.input-group-text {
    background: var(--secondary-color);
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    font-size: 16px;
    transition: var(--transition);
}

.input-group:focus-within .input-group-text {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.form-control {
    border: none;
    padding: 16px;
    font-size: 16px;
    background: var(--white);
    color: var(--text-primary);
    transition: var(--transition);
    flex: 1;
}

.form-control:focus {
    outline: none;
    box-shadow: none;
    background: rgba(99, 102, 241, 0.02);
}

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.password-toggle {
    cursor: pointer;
    background: var(--white);
    transition: var(--transition);
}

.password-toggle:hover {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.form-check {
    display: flex;
    align-items: center;
}

.form-check-input {
    margin-right: 8px;
    accent-color: var(--primary-color);
}

.form-check-label {
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.forgot-password {
    font-size: 14px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.forgot-password:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--border-radius);
    padding: 16px;
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

.login-btn:active {
    transform: translateY(0);
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.login-btn:hover::before {
    left: 100%;
}

.divider {
    text-align: center;
    margin: 32px 0;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    background: var(--white);
    padding: 0 20px;
    color: var(--text-secondary);
    font-size: 14px;
    position: relative;
}

.social-login {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
}

.social-btn {
    flex: 1;
    border: 2px solid var(--border-color);
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.google-btn:hover {
    border-color: #db4437;
    color: #db4437;
}

.facebook-btn:hover {
    border-color: #4267B2;
    color: #4267B2;
}

.apple-btn:hover {
    border-color: #000;
    color: #000;
}

.signup-link {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.signup-text {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.signup-text:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Responsive Design */
@media (max-width: 991px) {
    .login-container {
        max-width: 500px;
    }
    
    .illustration-section {
        min-height: 300px;
    }
    
    .form-section {
        padding: 40px 30px;
    }
    
    .welcome-title {
        font-size: 28px;
    }
    
    .social-login {
        flex-direction: column;
    }
    
    .social-btn {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .container-fluid {
        padding: 15px;
    }
    
    .login-container {
        border-radius: 16px;
        min-height: auto;
    }
    
    .illustration-section {
        min-height: 250px;
    }
    
    .form-section {
        padding: 30px 20px;
    }
    
    .welcome-title {
        font-size: 24px;
    }
    
    .form-container {
        max-width: 100%;
    }
    
    .arch {
        width: 200px;
        height: 100px;
    }
    
    .illustration-icon {
        font-size: 80px;
    }
}

@media (max-width: 480px) {
    .form-header {
        margin-bottom: 30px;
    }
    
    .welcome-title {
        font-size: 22px;
    }
    
    .welcome-subtitle {
        font-size: 14px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-control {
        padding: 14px;
        font-size: 14px;
    }
    
    .login-btn {
        padding: 14px;
        font-size: 14px;
    }
    
    .social-btn {
        padding: 10px;
        font-size: 12px;
    }
    
    .form-options {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
}

/* Loading States */
.login-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.login-btn.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Focus and Error States */
.form-control.error {
    border-color: var(--error-color);
    background: rgba(239, 68, 68, 0.05);
}

.form-control.success {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

.error-message {
    color: var(--error-color);
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

JS

// Password toggle functionality
function togglePassword() {
    const passwordInput = document.getElementById('password');
    const toggleIcon = document.getElementById('toggleEye');
    
    if (passwordInput.type === 'password') {
        passwordInput.type = 'text';
        toggleIcon.classList.remove('fa-eye');
        toggleIcon.classList.add('fa-eye-slash');
    } else {
        passwordInput.type = 'password';
        toggleIcon.classList.remove('fa-eye-slash');
        toggleIcon.classList.add('fa-eye');
    }
}

// Form validation
class FormValidator {
    constructor() {
        this.form = document.querySelector('.login-form');
        this.emailInput = this.form.querySelector('input[type="email"]');
        this.passwordInput = this.form.querySelector('input[type="password"]');
        this.submitBtn = this.form.querySelector('.login-btn');
        
        this.init();
    }
    
    init() {
        // Add event listeners
        this.form.addEventListener('submit', this.handleSubmit.bind(this));
        this.emailInput.addEventListener('blur', this.validateEmail.bind(this));
        this.passwordInput.addEventListener('blur', this.validatePassword.bind(this));
        this.emailInput.addEventListener('input', this.clearError.bind(this));
        this.passwordInput.addEventListener('input', this.clearError.bind(this));
        
        // Add real-time validation
        this.emailInput.addEventListener('input', this.debounce(this.validateEmail.bind(this), 500));
        this.passwordInput.addEventListener('input', this.debounce(this.validatePassword.bind(this), 500));
    }
    
    validateEmail() {
        const email = this.emailInput.value.trim();
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        
        if (!email) {
            this.showError(this.emailInput, 'Email is required');
            return false;
        }
        
        if (!emailRegex.test(email)) {
            this.showError(this.emailInput, 'Please enter a valid email address');
            return false;
        }
        
        this.showSuccess(this.emailInput);
        return true;
    }
    
    validatePassword() {
        const password = this.passwordInput.value;
        
        if (!password) {
            this.showError(this.passwordInput, 'Password is required');
            return false;
        }
        
        if (password.length < 6) {
            this.showError(this.passwordInput, 'Password must be at least 6 characters');
            return false;
        }
        
        this.showSuccess(this.passwordInput);
        return true;
    }
    
    showError(input, message) {
        const formGroup = input.closest('.form-group');
        const errorElement = formGroup.querySelector('.error-message') || this.createErrorElement();
        
        input.classList.add('error');
        input.classList.remove('success');
        formGroup.classList.add('error');
        
        errorElement.textContent = message;
        if (!formGroup.querySelector('.error-message')) {
            formGroup.appendChild(errorElement);
        }
    }
    
    showSuccess(input) {
        const formGroup = input.closest('.form-group');
        
        input.classList.remove('error');
        input.classList.add('success');
        formGroup.classList.remove('error');
        
        const errorElement = formGroup.querySelector('.error-message');
        if (errorElement) {
            errorElement.remove();
        }
    }
    
    clearError(e) {
        const input = e.target;
        const formGroup = input.closest('.form-group');
        
        input.classList.remove('error');
        formGroup.classList.remove('error');
        
        const errorElement = formGroup.querySelector('.error-message');
        if (errorElement) {
            errorElement.remove();
        }
    }
    
    createErrorElement() {
        const errorElement = document.createElement('div');
        errorElement.className = 'error-message';
        return errorElement;
    }
    
    handleSubmit(e) {
        e.preventDefault();
        
        const isEmailValid = this.validateEmail();
        const isPasswordValid = this.validatePassword();
        
        if (isEmailValid && isPasswordValid) {
            this.simulateLogin();
        }
    }
    
    simulateLogin() {
        const originalText = this.submitBtn.innerHTML;
        this.submitBtn.classList.add('loading');
        this.submitBtn.innerHTML = '<span>Signing In...</span>';
        
        // Simulate API call
        setTimeout(() => {
            this.submitBtn.classList.remove('loading');
            this.submitBtn.innerHTML = originalText;
            
            // Show success message or redirect
            this.showLoginSuccess();
        }, 2000);
    }
    
    showLoginSuccess() {
        const toast = this.createToast('Login successful! Welcome back.', 'success');
        document.body.appendChild(toast);
        
        setTimeout(() => {
            toast.remove();
        }, 3000);
    }
    
    createToast(message, type) {
        const toast = document.createElement('div');
        toast.className = `toast toast-${type}`;
        toast.innerHTML = `
            <i class="fas fa-${type === 'success' ? 'check-circle' : 'exclamation-circle'}"></i>
            <span>${message}</span>
        `;
        
        // Add toast styles
        Object.assign(toast.style, {
            position: 'fixed',
            top: '20px',
            right: '20px',
            background: type === 'success' ? '#10b981' : '#ef4444',
            color: 'white',
            padding: '16px 20px',
            borderRadius: '8px',
            boxShadow: '0 4px 12px rgba(0, 0, 0, 0.15)',
            display: 'flex',
            alignItems: 'center',
            gap: '10px',
            fontSize: '14px',
            fontWeight: '500',
            zIndex: '9999',
            animation: 'slideInRight 0.3s ease-out'
        });
        
        return toast;
    }
    
    debounce(func, wait) {
        let timeout;
        return function executedFunction(...args) {
            const later = () => {
                clearTimeout(timeout);
                func(...args);
            };
            clearTimeout(timeout);
            timeout = setTimeout(later, wait);
        };
    }
}

// Social login handlers
function handleSocialLogin(provider) {
    console.log(`Logging in with ${provider}`);
    
    const toast = document.createElement('div');
    toast.textContent = `${provider} login functionality would be implemented here`;
    toast.style.cssText = `
        position: fixed;
        top: 20px;
        right: 20px;
        background: #6366f1;
        color: white;
        padding: 12px 16px;
        border-radius: 8px;
        font-size: 14px;
        z-index: 9999;
    `;
    
    document.body.appendChild(toast);
    setTimeout(() => toast.remove(), 3000);
}

// Enhanced animations
function addEnhancedAnimations() {
    // Stagger animation for form elements
    const formElements = document.querySelectorAll('.form-group, .form-options, .login-btn, .divider, .social-login, .signup-link');
    
    formElements.forEach((element, index) => {
        element.style.animationDelay = `${0.1 * index}s`;
        element.style.animation = 'slideUp 0.6s ease-out both';
    });
    
    // Floating animation for social buttons
    const socialBtns = document.querySelectorAll('.social-btn');
    socialBtns.forEach(btn => {
        btn.addEventListener('mouseenter', function() {
            this.style.transform = 'translateY(-3px) scale(1.02)';
        });
        
        btn.addEventListener('mouseleave', function() {
            this.style.transform = 'translateY(0) scale(1)';
        });
    });
}

// Initialize everything when DOM is loaded
document.addEventListener('DOMContentLoaded', function() {
    // Initialize form validator
    new FormValidator();
    
    // Add enhanced animations
    addEnhancedAnimations();
    
    // Add social login event listeners
    document.querySelectorAll('.social-btn').forEach(btn => {
        btn.addEventListener('click', function() {
            const provider = this.querySelector('span').textContent;
            handleSocialLogin(provider);
        });
    });
    
    // Add smooth scrolling for mobile
    const container = document.querySelector('.login-container');
    if (window.innerWidth <= 768) {
        container.style.scrollBehavior = 'smooth';
    }
    
    // Add keyboard navigation
    document.addEventListener('keydown', function(e) {
        if (e.key === 'Enter' && e.target.matches('input')) {
            const form = e.target.closest('form');
            const inputs = Array.from(form.querySelectorAll('input'));
            const currentIndex = inputs.indexOf(e.target);
            
            if (currentIndex < inputs.length - 1) {
                inputs[currentIndex + 1].focus();
            } else {
                form.querySelector('.login-btn').click();
            }
        }
    });
});

// Add toast animation styles
const toastStyles = document.createElement('style');
toastStyles.textContent = `
    @keyframes slideInRight {
        from {
            transform: translateX(100%);
            opacity:0;
        }
        to {
            transform: translateX(0);
            opacity: 1;
        }
    }
`;
document.head.appendChild(toastStyles);

// Performance optimization
const observerOptions = {
    threshold: 0.1,
    rootMargin: '0px 0px -50px 0px'
};

// Lazy load animations
document.querySelectorAll('.floating-circle').forEach(circle => {
    observer.observe(circle);
});

// Add ripple effect to login button
function addRippleEffect() {
    const btn = document.querySelector('.login-btn');
    
    btn.addEventListener('click', function(e) {
        const ripple = document.createElement('span');
        const rect = this.getBoundingClientRect();
        const size = Math.max(rect.width, rect.height);
        const x = e.clientX - rect.left - size / 2;
        const y = e.clientY - rect.top - size / 2;
        
        ripple.style.cssText = `
            position: absolute;
            width: ${size}px;
            height: ${size}px;
            left: ${x}px;
            top: ${y}px;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            transform: scale(0);
            animation: ripple 0.6s ease-out;
            pointer-events: none;
        `;
        
        this.appendChild(ripple);
        
        setTimeout(() => {
            ripple.remove();
        }, 600);
    });
}

// Add ripple animation styles
const rippleStyles = document.createElement('style');
rippleStyles.textContent = `
    @keyframes ripple {
        to {
            transform: scale(2);
            opacity: 0;
        }
    }
`;
document.head.appendChild(rippleStyles);

// Initialize ripple effect
setTimeout(addRippleEffect, 100);

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