.itbi-calc-container {
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.itbi-calc-header {
    text-align: center;
    margin-bottom: 30px;
}

.itbi-calc-header h2 {
    color: #333;
    font-size: 20px;
    margin: 0;
    font-weight: 600;
}

.itbi-calc-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.itbi-calc-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.itbi-calc-group label {
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.itbi-calc-input {
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
    background-color: #fff;
}

.itbi-calc-input:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.itbi-calc-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-top: none;
    border-radius: 0 0 6px 6px;
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

.itbi-calc-suggestions.active {
    display: block;
}

.itbi-calc-suggestions li {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 14px;
    color: #333;
    transition: background-color 0.2s ease;
}

.itbi-calc-suggestions li:hover {
    background-color: #f0f0f0;
}

.itbi-calc-actions {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.itbi-calc-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
}

.itbi-calc-btn-primary {
    background-color: #007bff;
    color: #fff;
}

.itbi-calc-btn-primary:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.itbi-calc-btn-secondary {
    background-color: #e0e0e0;
    color: #333;
}

.itbi-calc-btn-secondary:hover {
    background-color: #d0d0d0;
}

.itbi-calc-result {
    margin-top: 30px;
    padding: 20px;
    background: #fff;
    border-radius: 6px;
    border-left: 4px solid #007bff;
}

.itbi-calc-result-content h3 {
    margin: 0 0 20px 0;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}

.itbi-calc-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
}

.itbi-calc-result-item:last-child {
    border-bottom: none;
}

.itbi-calc-label {
    color: #666;
    font-weight: 500;
}

.itbi-calc-value {
    color: #333;
    font-weight: 600;
    font-size: 16px;
}

.itbi-calc-result-highlight {
    background-color: #f0f8ff;
    padding: 16px;
    margin: 10px -20px -20px -20px;
    border-radius: 0 0 6px 6px;
}

.itbi-calc-result-highlight .itbi-calc-value {
    color: #007bff;
    font-size: 20px;
}

@media (max-width: 600px) {
    .itbi-calc-actions {
        flex-direction: column;
    }
}