body { 
    font-family: 'Segoe UI', 
    sans-serif; background: #f4f4f9; 
    display: flex; 
    justify-content: center; 
    padding-top: 50px; }
.container { 
    width: 600px; 
    background: white; 
    padding: 20px; 
    border-radius: 8px; 
    box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
h1 { 
    text-align: center; 
    color: #333; }
.input-group { 
    display: flex; 
    gap: 10px; 
    margin-bottom: 20px; }
select { 
    padding: 10px; 
    border-radius: 4px; 
    border: 1px solid #ddd; 
    background: #eee; 
    font-weight: bold; }
input { 
    flex: 1; 
    padding: 10px; 
    border: 1px solid #ddd; 
    border-radius: 4px; }
button#sendBtn { 
    padding: 10px 20px; 
    background: #007bff; 
    color: white; 
    border: none; 
    border-radius: 4px; 
    cursor: pointer; 
    font-weight: bold; }
button#sendBtn:hover { 
    background: #0056b3; }
.tabs { 
    margin-bottom: 5px; }
.tab-btn { 
    background: none; 
    border: none; 
    cursor: pointer; 
    padding: 5px 10px; 
    font-weight: bold; 
    color: #666; }
.tab-btn.active { 
    color: #007bff; 
    border-bottom: 2px solid #007bff; }
textarea { 
    width: 100%; 
    height: 100px; 
    padding: 10px; 
    border: 1px solid #ddd; 
    border-radius: 4px; 
    font-family: monospace; 
    resize: vertical; 
    box-sizing: border-box; }
.response-container { 
    margin-top: 20px; 
    border-top: 2px solid #eee; 
    padding-top: 10px; }
.hidden { 
    display: none; }
.status-bar { 
    display: flex; 
    gap: 10px; 
    margin-bottom: 10px; }
#responseBody { 
    background: #1e1e1e; 
    color: #00ff00; 
    padding: 15px; 
    border-radius: 5px; 
    overflow-x: auto; 
    white-space: pre-wrap; 
    font-size: 0.9em; 
    max-height: 400px; 
    overflow-y: auto;}
.badge { 
    padding: 8px 12px; 
    border-radius: 4px; 
    font-size: 0.9em; 
    font-weight: bold; 
    color: white; 
    display: inline-block;
    min-width: 100px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);}