body {
    background-color: #f0f2f5;
    font-family: 'Segoe UI', sans-serif;
    direction: rtl;
    text-align: right;
}

.main-header {
    text-align: center;
    padding: 30px 15px;
    background: linear-gradient(90deg, #0d6efd, #6610f2);
    color: white;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.card {
    border: none;
    border-radius: 16px;
}

.card h4 {
    font-weight: bold;
    color: #333;
}

label {
    font-weight: 500;
    color: #555;
}

input.form-control {
    border-radius: 10px;
    padding: 10px;
    font-size: 1rem;
}

.btn-success {
    background-color: #198754;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: bold;
    padding: 10px;
    transition: transform 0.2s ease-in-out;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-success:hover {
    transform: scale(1.03);
    background-color: #157347;
}