:root {
    --primary-color: #5a5a5a;
    --primary-hover-color: #444444;
    --background-color: #f0f0f0;
    --container-background: #ffffff;
    --text-color: #333;
    --text-light: #666;
    --placeholder-color: #999;
    --border-color: #ccc;
    --border-radius: 10px;
    --box-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
    --font-family: 'Helvetica Neue', Arial, sans-serif;
    --font-size-small: 14px;
    --font-size-medium: 16px;
    --font-size-large: 18px;
    --font-size-xlarge: 24px;
    --font-size-xxlarge: 36px;
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
}

.container {
    display: flex;
    width: 85%;
    max-width: 1200px;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: var(--container-background);
    transition: all 0.3s ease-in-out;
}

.left-side, .right-side {
    flex: 1;
    padding: 60px;
}

.left-side {
    background: url('https://images.unsplash.com/photo-1567016432779-094069958ea5?q=80&w=1780&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D') no-repeat center center;
    background-size: cover;
    position: relative;
}

.left-side::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 0;
}

.left-side .content {
    position: relative;
    z-index: 1;
    color: #fff;
    text-align: left;
}

.left-side h1 {
    margin: 0;
    font-size: var(--font-size-xxlarge);
    line-height: 1.2;
    font-weight: bold;
    letter-spacing: 1px;
    animation: fadeInUp 1s ease-in-out;
}

.left-side p {
    font-size: var(--font-size-large);
    margin-top: 20px;
    font-weight: 300;
    animation: fadeInUp 1s ease-in-out;
}

.right-side {
    background-color: var(--container-background);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
    border-radius: var(--border-radius);
}

.language-selector {
    text-align: right;
    margin-bottom: 30px;
}

.language-selector select {
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: var(--font-size-small);
    background-color: #fff;
    color: var(--text-color);
}

.form-container {
    max-width: 400px;
    margin: 0 auto;
}

.form-container h2 {
    font-size: var(--font-size-xlarge);
    margin-bottom: 10px;
    color: var(--text-color);
}

.form-container h3 {
    font-size: var(--font-size-large);
    margin-bottom: 30px;
    color: var(--text-light);
}

.input-group {
    margin-bottom: 20px;
    position: relative;
}

.input-group label {
    display: block;
    text-align: left;
    font-weight: bold;
    margin-bottom: 5px;
    color: var(--text-color);
    font-size: var(--font-size-small);
}

.input-group input {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: var(--font-size-medium);
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
    color: var(--text-color);
    font-family: inherit;
    height: 50px;
}

.input-group input:focus {
    border-color: var(--text-light);
    outline: none;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}

.input-group input::placeholder {
    color: var(--placeholder-color);
}

.input-group .forgot {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: var(--placeholder-color);
    text-decoration: none;
}

.input-group .forgot:hover {
    text-decoration: underline;
    color: var(--text-light);
}

.login-btn {
    width: 100%;
    padding: 15px;
    border: none;
    background-color: var(--primary-color);
    color: #ffffff;
    cursor: pointer;
    border-radius: 5px;
    font-size: var(--font-size-medium);
    font-weight: bold;
    transition: background-color 0.3s;
    height: 50px;
}

.login-btn:hover {
    background-color: var(--primary-hover-color);
}

.form-container p {
    text-align: center;
    margin-top: 20px;
    font-size: var(--font-size-small);
    color: var(--placeholder-color);
}

.form-container p a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: bold;
}

.form-container p a:hover {
    text-decoration: underline;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        width: 95%;
    }

    .left-side, .right-side {
        padding: 20px;
    }

    .left-side h1, .left-side p {
        text-align: center;
    }

    .language-selector {
        text-align: center;
    }

    .form-container {
        width: 100%;
    }
}