.bcbdf-form-container {
    max-width: 600px;
    margin: 2rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.bcbdf-form-group {
    margin-bottom: 1.5rem;
}

.bcbdf-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.bcbdf-form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    box-sizing: border-box;
}

.bcbdf-form-control:focus {
    border-color: #2563eb;
    outline: 0;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.bcbdf-submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.75rem 1.5rem;
    background-color: #2563eb;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.15s ease-in-out;
}

.bcbdf-submit-btn:hover {
    background-color: #1d4ed8;
}

.bcbdf-submit-btn:disabled {
    background-color: #93c5fd;
    cursor: not-allowed;
}

.bcbdf-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
    display: none;
}

.bcbdf-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
    display: block;
}

.bcbdf-spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #ffffff;
    border-right-color: transparent;
    border-radius: 50%;
    animation: bcbdf-spin 0.75s linear infinite;
    margin-left: 0.5rem;
    display: none;
}

@keyframes bcbdf-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}