.trading-operation-container {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

.trading-header {
    border-bottom: 2px solid #f0f0f1;
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.trading-header h3 {
    margin: 0 0 10px 0;
    color: #1d2327;
    font-size: 1.5em;
    font-weight: 600;
}

.price-display {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1em;
}

.price-label {
    font-weight: 600;
    color: #3c434a;
}

.current-price {
    font-weight: 700;
    color: #0073aa;
    font-size: 1.2em;
}

.price-change {
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9em;
}

.price-change.positive {
    background: #d1f7e4;
    color: #0a8754;
}

.price-change.negative {
    background: #fde7e9;
    color: #d63638;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #3c434a;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #dcdcde;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1.4;
    background: #ffffff;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: #007cba;
    box-shadow: 0 0 0 1px #007cba;
    outline: none;
}

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

.operation-summary {
    background: #f6f7f7;
    border: 1px solid #dcdcde;
    border-radius: 4px;
    padding: 15px;
    margin: 15px 0;
}

.operation-summary h4 {
    margin: 0 0 10px 0;
    color: #1d2327;
}

.summary-content {
    font-size: 0.9em;
    line-height: 1.5;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: #0073aa;
    color: #ffffff;
    width: 100%;
}

.btn-primary:hover {
    background: #005a87;
}

.btn-primary:disabled {
    background: #a7aaad;
    cursor: not-allowed;
}

.form-messages {
    margin-top: 15px;
    padding: 10px;
    border-radius: 4px;
    display: none;
}

.form-messages.success {
    background: #d1f7e4;
    border: 1px solid #0a8754;
    color: #0a8754;
}

.form-messages.error {
    background: #fde7e9;
    border: 1px solid #d63638;
    color: #d63638;
}

.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .trading-operation-container {
        padding: 15px;
        margin: 10px 0;
    }
}