.hai-container {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    max-width: 800px;
    margin: 2em auto;
    padding: 25px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.hai-form-group {
    margin-bottom: 20px;
}
.hai-container label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}
.hai-form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.2s ease-in-out;
    box-sizing: border-box;
}
.hai-word-count {
    text-align: right;
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}
.hai-controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: flex-end;
}
.hai-message-box {
    padding: 12px 15px;
    margin-bottom: 15px;
    border-radius: 4px;
    font-weight: 500;
    border: 1px solid transparent;
}
.hai-message-box.error {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}
.hai-buttons-row {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}
.hai-btn {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease-in-out;
    position: relative;
    border-width: 1px;
    border-style: solid;
}
.hai-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.hai-btn .hai-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: hai-spin 1s linear infinite;
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -8px 0 0 -8px;
}
.hai-btn.loading .hai-spinner { display: block; }
.hai-btn.loading .hai-btn-text { visibility: hidden; }
.hai-output-box {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #f9f9f9;
    min-height: 40px;
    font-size: 14px;
    white-space: pre-wrap;
    word-wrap: break-word;
}
#hai-output-text {
    background-color: #f9f9f9;
}
@keyframes hai-spin { to { transform: rotate(360deg); } }
@media (max-width: 600px) {
    .hai-controls-grid { grid-template-columns: 1fr; }
}