* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

.primlink-body {
    background-color: #f5f8fa;
    color: #333;
    line-height: 1.6;
}

.primlink-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}


.category-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 25px;
}

.tab-btn {
    padding: 10px 15px;
    background-color: #ecf0f1;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background-color: #d5dbdb;
}

.tab-btn.active {
    background-color:#f50537;
    color: white;
}

.converter-section {
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.converter-select {
    margin-bottom: 20px;
}

.converter-select label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.converter-select select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.conversion-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

@media (min-width: 768px) {
    .conversion-box {
        flex-direction: row;
        justify-content: space-between;
    }
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

@media (min-width: 768px) {
    .input-group {
        width: 40%;
    }
}

.input-group input {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.input-group select {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.equals {
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

#convert-btn {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: #f50537;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-bottom: 20px;
}

#convert-btn:hover {
    background-color: #f50537;
}

.formula-box {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #eee;
}

.formula-box p {
    font-size: 14px;
}

#formula-text {
    font-family: monospace;
    color: #e74c3c;
}