.nbai-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}
.nbai-container h2 {
    text-align: center;
    margin-top: 0;
    margin-bottom: 30px;
    color: #2c3e50;
    font-size: 24px;
}
.nbai-container .form-group {
    margin-bottom: 20px;
}
.nbai-container form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #34495e;
}
.nbai-container form input[type="text"],
.nbai-container form input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}
.nbai-container form .persist-label {
    display: inline-flex;
    align-items: center;
    font-weight: normal;
    font-size: 14px;
    margin-top: 8px;
    cursor: pointer;
}
.nbai-container form .persist-label input {
    width: auto;
    margin-right: 8px;
}
.nbai-container form .description {
    font-size: 13px;
    color: #777;
    font-weight: normal;
    margin-top: 8px;
}

.nbai-container .keyword-group .keyword-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.nbai-container .keyword-group .keyword-item input[type="text"] {
    flex-grow: 1;
}
.nbai-container .keyword-group .keyword-item span {
    font-size: 14px;
    color: #555;
}
.nbai-container .keyword-group .keyword-item input[type="number"] {
    width: 80px;
}

#nbai-generate {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 25px;
    background-color: #0073aa;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.2s;
}
#nbai-generate:hover {
    background-color: #005177;
}
#nbai-generate .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-left: 10px;
}
#nbai-generate.loading .spinner {
    display: block;
}
#nbai-generate.loading .button-text {
    display: none;
}
#nbai-generate:disabled {
    background-color: #a0a5aa;
    cursor: not-allowed;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#nbai-result-wrapper {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}
#nbai-result-wrapper h3 {
    margin-top: 0;
    color: #2c3e50;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
#nbai-result-wrapper .char-count-display {
    font-size: 14px;
    font-weight: normal;
    color: #777;
    background-color: #e9ecef;
    padding: 4px 8px;
    border-radius: 4px;
}
#nbai-result {
    margin-top: 10px;
    padding: 20px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    min-height: 200px;
    line-height: 1.7;
    white-space: pre-wrap;
    font-size: 15px;
}
#nbai-result .prompt-summary {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid #e9ecef;
    font-size: 14px;
    color: #495057;
}
#nbai-result h2, #nbai-result h3 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}
#nbai-result p {
    margin-bottom: 1em;
}

.nbai-result-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
}
.nbai-result-actions .action-btn {
    padding: 8px 16px;
    border: 1px solid #ccc;
    background-color: #f0f0f0;
    color: #333;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s, border-color 0.2s;
}
.nbai-result-actions .action-btn:hover {
    background-color: #e0e0e0;
    border-color: #bbb;
}
.nbai-result-actions .action-btn.primary {
    background-color: #0073aa;
    color: #fff;
    border-color: #0073aa;
}
.nbai-result-actions .action-btn.primary:hover {
    background-color: #005177;
    border-color: #005177;
}