*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--secondary-color: #6b7280;--success-color: #10b981;--error-color: #ef4444;--background: #f9fafb;--surface: #ffffff;--surface-hover: #f3f4f6;--border-color: #e5e7eb;--text-primary: #111827;--text-secondary: #6b7280;--text-tertiary: #9ca3af;--grey-dark: #374151;--grey-medium: #6b7280;--grey-light: #d1d5db;--off-white: #f9fafb;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--border-radius: 8px;--transition: all .2s ease}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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h3{font-size:1.25rem;color:var(--text-primary);margin-bottom:.5rem;font-weight:600}.response-placeholder p{max-width:480px;line-height:1.6;color:var(--text-secondary)}.response-container{display:flex;flex-direction:column;gap:1.75rem;animation:fadeIn .4s ease}.section-header{margin-bottom:.75rem}.section-header h3{font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}.query-section{background:var(--surface-hover);padding:1.25rem 1.5rem;border-radius:var(--border-radius);border-left:3px solid var(--grey-dark)}.query-text{color:var(--text-primary);font-size:1rem;line-height:1.6}.chat-loader{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:1rem;color:var(--text-secondary);font-size:.9375rem;animation:fadeIn .3s ease}.loader-dots{display:flex;gap:.5rem}.loader-dots span{width:10px;height:10px;background:var(--primary-color);border-radius:50%;animation:dotBounce 1.4s ease-in-out 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2rem;background:linear-gradient(135deg,var(--primary-color),#7c3aed);color:#fff;border:none;border-radius:var(--border-radius);font-size:.9375rem;font-weight:600;cursor:pointer;transition:var(--transition);white-space:nowrap;min-width:140px;box-shadow:var(--shadow-sm)}.submit-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-md);background:linear-gradient(135deg,var(--primary-hover),#6d28d9)}.submit-button:active:not(:disabled){transform:translateY(0);box-shadow:var(--shadow-sm)}.submit-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.chat-footer{background:var(--surface);border-top:1px solid var(--border-color);padding:1rem 2rem;text-align:center;color:var(--text-tertiary);font-size:.8125rem}.chat-footer p{max-width:1100px;margin:0 auto}@keyframes 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