body {
    font-family: Vazirmatn, sans-serif;
    background: #f9f9f9;
    direction: rtl;
    text-align: right;
    padding: 20px;
    color: #333;
}
.container {
    max-width: 600px;
    margin: auto;
}
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 20px;
}
.tabs button {
    flex: 1 1 30%;
    padding: 10px;
    background-color: #ddd;
    border: 1px solid #ccc;
    cursor: pointer;
    color: #000;
    font-weight: bold;
}
.tabs button:hover, .tabs button.active {
    background-color: #A40B0B;
    color: #fff;
}
.tab {
    display: none;
}
.tab.active {
    display: block;
}
label {
    display: block;
    margin: 10px 0;
}
input, select {
    width: 100%;
    padding: 5px;
    margin-top: 5px;
    box-sizing: border-box;
}
button {
    margin-top: 10px;
    background-color: #A40B0B;
    color: white;
    border: none;
    padding: 10px;
    width: 100%;
    cursor: pointer;
    font-weight: bold;
}
.output {
    border: 2px solid #A40B0B;
    padding: 12px;
    margin-top: 15px;
    color: #A40B0B;
    font-weight: bold;
    background: #fff4f4;
    border-radius: 5px;
}
.note {
    margin-top: 10px;
    font-size: 0.9em;
    color: #555;
}
.note a {
    color: #A40B0B;
    text-decoration: underline;
}