body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #2980b9, #6dd5fa);
    font-family: 'Vazir', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.login-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    width: 350px;
    text-align: center;
}

    .login-card img {
        width: 90px;
        margin-bottom: 15px;
    }

    .login-card h2 {
        margin-bottom: 25px;
        color: #333;
    }

.form-group {
    margin-bottom: 20px;
    text-align: right;
}

    .form-group label {
        display: block;
        margin-bottom: 6px;
        font-weight: bold;
    }

.form-control {
    width: 100%;
    padding: 10px;
    font-size: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
}

.btn {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    background-color: #3498db;
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}

    .btn:hover {
        background-color: #2980b9;
    }

.text-danger {
    color: red;
    font-size: 13px;
    display: block;
    margin-top: 5px;
}