body {
    font-family: 'Cairo', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    direction: rtl;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    width: 350px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    text-align: center;
}

h2 {
    margin-bottom: 20px;
    color: #1e3c72;
}

select, input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 16px;
}

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: #1e3c72;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #16325c;
}

.result {
    margin-top: 15px;
    font-size: 18px;
    font-weight: bold;
    color: #2a5298;
}

.footer {
    margin-top: 20px;
    font-size: 14px;
    color: gray;
}