body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #777, #fff);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    width: 350px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    animation: fadeIn 0.8s ease-in-out;
}

h2 {
    margin-bottom: 20px;
    color: #333;
}

form input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border-radius: 8px;
    border: 1px solid #ccc;
    outline: none;
    transition: 0.3s;
}

form input:focus {
    border-color: #667eea;
    box-shadow: 0 0 8px rgba(102, 126, 234, 0.5);
}

button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: linear-gradient(135deg, #5a67d8, #6b46c1);
}

.error {
    color: red;
    margin-bottom: 15px;
}

.logout {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background: crimson;
    color: white;
    border-radius: 8px;
    text-decoration: none;
    transition: 0.3s;
}

.logout:hover {
    background: darkred;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}