.bg-gray-100 {
    font-family: 'Inter', sans-serif;
}

.card {
    transition: all 0.3s ease-in-out;
}

.result-box {
    background-color: #f9fafb;
    border: 1px solid #e5e7eb;
    padding: 1.5rem;
    border-radius: 0.75rem;
}

.result-price {
    font-size: 1.75rem;
    font-weight: 700;
}

.profit-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #059669; /* emerald-600 */
}

.tooltip {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 220px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -110px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

#categoryDropdown {
    max-height: 250px;
    overflow-y: auto;
}

#categoryDropdown button:hover {
    background-color: #f3f4f6;
}

.tab-btn {
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.tab-btn.active {
    border-bottom-color: #0d9488;
    color: #134e4a;
}