/* Black-Scholes Calculator CSS */
/* Augusto Damasceno */

.bs-calculator-container {
    padding: 20px 0;
}

.card {
    border: 1px solid #e9ecef;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.card-title {
    color: #2c3e50;
    font-weight: 600;
}

.form-label {
    color: #495057;
    margin-bottom: 0.5rem;
}

.form-control {
    border-radius: 6px;
    border: 1px solid #ced4da;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

.result-box {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    border: 2px solid #e9ecef;
    text-align: center;
    height: 100%;
}

.result-box h5 {
    margin-bottom: 15px;
    font-weight: 600;
}

.result-box .display-4 {
    color: #2c3e50;
    font-weight: 700;
    margin: 20px 0;
}

.greek-box {
    background-color: #ffffff;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #dee2e6;
    text-align: center;
    transition: all 0.3s ease;
}

.greek-box:hover {
    border-color: #80bdff;
    box-shadow: 0 2px 8px rgba(0,123,255,.15);
    transform: translateY(-2px);
}

.greek-box small {
    display: block;
    margin-bottom: 8px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.greek-box h4 {
    margin: 0;
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.25rem;
}

.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
    margin: 20px 0;
    max-width: 100%;
}

.chart-container canvas {
    max-width: 100%;
    max-height: 100%;
}

.btn-group .btn {
    transition: all 0.3s ease;
}

.btn-outline-primary {
    border-color: #007bff;
    color: #007bff;
}

.btn-outline-primary:hover {
    background-color: #007bff;
    color: #fff;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .chart-container {
        height: 300px;
    }
    
    .result-box .display-4 {
        font-size: 2rem;
    }
    
    .greek-box {
        margin-bottom: 10px;
    }
    
    .bs-calculator-container {
        padding: 10px 0;
    }
}

/* Animation for value changes */
@keyframes valueChange {
    0% { background-color: #fff3cd; }
    100% { background-color: transparent; }
}

.form-control:focus {
    animation: valueChange 0.5s ease;
}

/* Improve number input appearance */
input[type="number"] {
    -moz-appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Positive/Negative value coloring */
.text-positive {
    color: #28a745;
}

.text-negative {
    color: #dc3545;
}

/* Loading animation */
.calculating {
    opacity: 0.6;
    pointer-events: none;
}

/* Highlight current option type */
.form-control:valid {
    border-color: #28a745;
}

.form-control:invalid {
    border-color: #dc3545;
}