src/web/static/css/style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.9;
}

.main-content {
    padding: 40px 30px;
}

.query-section {
    margin-bottom: 30px;
}

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

textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: #667eea;
}

.submit-btn {
    width: 100%;
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.cancel-btn {
    width: 100%;
    padding: 10px 20px;
    background: #f44;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.cancel-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(244, 68, 68, 0.4);
}

.answer-section {
    margin-top: 30px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
    border-left: 4px solid #667eea;
    margin-bottom: 20px;
}

.answer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.answer-header h2 {
    color: #667eea;
    font-size: 1.5em;
}

.answer-meta {
    font-size: 0.9em;
    color: #666;
}

.answer-content {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

.answer-content p {
    margin-bottom: 15px;
}

.answer-content strong {
    color: #667eea;
    font-weight: 600;
}

.answer-content em {
    font-style: italic;
    color: #555;
}

.answer-content ul,
.answer-content ol {
    margin: 15px 0;
    padding-left: 30px;
}

.answer-content li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.sources-section {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid #e0e0e0;
}

.sources-section h3 {
    margin-bottom: 15px;
    color: #667eea;
}

.source-item {
    background: white;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 3px solid #764ba2;
}

.source-path {
    font-weight: 600;
    color: #667eea;
    margin-bottom: 5px;
    font-size: 0.9em;
}

.source-content {
    color: #666;
    font-size: 0.9em;
    line-height: 1.6;
}

.error-section {
    padding: 20px;
    background: #fee;
    border-radius: 10px;
    border-left: 4px solid #f44;
    margin-bottom: 20px;
}

.error-content {
    color: #c33;
    font-weight: 500;
}

.suggestions {
    margin-top: 40px;
}

.suggestions h3 {
    margin-bottom: 15px;
    color: #667eea;
}

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.chip {
    padding: 10px 20px;
    background: #f0f0f0;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    color: #333;
}

.chip:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
    transform: translateY(-2px);
}

footer {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    color: #666;
    font-size: 0.9em;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .main-content {
        padding: 20px;
    }
    
    .answer-section {
        padding: 20px;
    }
}