body {
    direction: rtl;
    text-align: right;
    font-family: Arial, sans-serif;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th, td {
    border: 1px solid black;
    padding: 8px;
    text-align: right;
}

th {
    background-color: #f2f2f2;
}



th, td {
    border: 1px solid black;
    padding: 10px;
    text-align: center;
    vertical-align: middle;
    position: relative;
}

.hashed {
    background-image: repeating-linear-gradient( 135deg, #000 0, #000 1px, #fff 1px, #fff 10px );
    color: black;
}


.number {
    position: relative;
    z-index: 1;
    font-weight: bold;
    background-color: rgba(255,255,255,0.7);
    padding: 2px 5px;
    border-radius: 4px;
}

.vertical-header {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    white-space: nowrap;
    font-weight: bold;
}

.subtext {
    font-size: 12px;
    margin-top: 4px;
    display: block;
}

.complex-header {
    position: relative;
    min-width: 120px;
    height: 130px;
}

.main-title {
    font-weight: bold;
    font-size: 14px;
    position: absolute;
    top: 20px;
    left: 10px;
    right: 10px;
    text-align: center;
}

.side-vertical {
    position: absolute;
    top: 10px;
    right: -20px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 13px;
    font-weight: bold;
    height: 100%;
}

.bottom-label {
    position: absolute;
    bottom: 5px;
    left: 0;
    right: 0;
    font-size: 13px;
    font-weight: bold;
    text-align: center;
}


.math-container {
    text-align: left; /* چپ‌چین کردن محتوا */
    direction: ltr; /* اطمینان از ترتیب درست نوشتار */
    display: flex; /* استفاده از Flexbox برای چیدمان بهتر */
    justify-content: flex-start; /* چپ‌چین کردن محتوا */
}

.formula {
    text-align: left;
    direction: ltr;
}