body {
    background: linear-gradient(135deg, #a8e6a3, #d3f2d7);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-signin {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 360px;
}

.form-signin img {
    display: block;
    margin: 0 auto 1rem;
}

.form-signin h1 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: #333;
}

.form-signin .form-floating label {
    color: #777;
}

.form-signin .btn {
    background: #1e90ff;
    border: none;
    color: #fff;
    transition: background 0.3s;
}

.form-signin .btn:hover {
    background: #1c86ee;
}

.form-signin .form-check-label {
    color: #555;
}

.form-signin p {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #555;
}

.form-signin p a {
    color: #1e90ff;
    text-decoration: none;
}

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