/* style.css */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    padding: 0;
}

.container {
    width: 90%;
    max-width: 400px;
    margin: 80px auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
}

h2 {
    text-align: center;
    color: #28a745; /* ????????????????????? */
    margin-bottom: 25px;
    font-size: 24px;
}

form {
    display: flex;
    flex-direction: column;
}

input[type=text], input[type=password] {
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 16px;
    transition: 0.3s;
}

input[type=text]:focus, input[type=password]:focus {
    border-color: #28a745;
    box-shadow: 0 0 5px rgba(40,167,69,0.5);
    outline: none;
}

button {
    padding: 12px;
    margin-top: 15px;
    background-color: #28a745;
    color: #fff;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background-color: #218838;
}

.error {
    color: red;
    text-align: center;
    margin-top: 10px;
    font-weight: bold;
}

/* Responsive */
@media (max-width: 500px) {
    .container {
        margin: 50px 10px;
        padding: 20px;
    }
    h2 {
        font-size: 20px;
    }
    input[type=text], input[type=password], button {
        font-size: 14px;
        padding: 10px;
    }
}