body {
    background-color: #2b2b2b;
    font-family: Arial, sans-serif;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

.login-box {
    background: #1f1f2f;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.6);
    width: 100%;
    max-width: 350px;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 20px;
}

.login-box input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: none;
    border-radius: 5px;
    background: #2e2e3e;
    color: white;
}

.login-box button {
    width: 60%;
    padding: 10px;
    background-color: #4CAF50;
    border: none;
    color: white;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    margin: 0 auto;
    display: block;

}

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

.error-msg {
    color: #ff4c4c;
    margin-bottom: 10px;
    text-align: center;
}

@media (max-width: 576px) {
    .login-box {
        padding: 20px; /* чуть компактнее */
    }

    .login-box button {
        width: 100%; /* кнопка на всю ширину */
    }
}