body {
    margin: 0;
    font-family: 'Roboto', 'Roboto', 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #273943;
    background-image: url('index.jpg');
    background-position: center;
    background-repeat: no-repeat;
    background-size: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-container {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 40px;
    padding-bottom: 10px;
    border-radius: 10px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 400px;
    width: 100%;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.login-container.visible {
    opacity: 1;
}

h1 {
    font-family: 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
    color: #fff;
    text-align: center;
    margin: 0;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.lang-switch {
    display: flex;
}

.lang-switch button {
    background: none;
    border: 1px solid #fff;
    color: #fff;
    padding: 3px 8px;
    cursor: pointer;
    border-radius: 5px;
    margin-left: 5px;
    font-size: 11px;
    font-family: 'Roboto', 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
}

.lang-switch button.active {
    background: #fff;
    color: #273943;
}

.input-group {
    position: relative;
    margin-bottom: 30px;
}

.input-group input {
    width: 100%;
    padding: 10px;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #fff;
    color: #fff;
    font-size: 16px;
    font-family: 'Roboto', 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
    box-sizing: border-box;
}

.input-group input:focus {
    outline: none;
    border-bottom-color: #4CAF50;
}

.input-group label {
    position: absolute;
    top: 10px;
    left: 0;
    color: #fff;
    font-size: 16px;
    font-family: 'Roboto', 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
    pointer-events: none;
    transition: 0.3s ease-out;
}

.input-group input:focus + label,
.input-group input:valid + label {
    top: -20px;
    font-size: 13px;
    font-family: 'Roboto', 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
    color: #4CAF50;
}

.toggle-password {
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
    color: #fff;
    user-select: none;
    opacity: 0.5;
    transition: opacity 0.2s ease-in-out;
}

.toggle-password:hover {
    opacity: 1;
}


button {
    width: 100%;
    padding: 15px;
    background-color: #4CAF50;
    border: none;
    border-radius: 5px;
    color: #fff;
    font-size: 16px;
    font-family: 'Roboto', 'Rubik', -apple-system, BlinkMacSystemFont, sans-serif;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}

.footer {
    margin-top: 60px;
    text-align: center;
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 11px;
}