.app{min-height:100vh;display:flex;flex-direction:column;background-color:#f8fafc}.app-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem;text-align:center;box-shadow:0 4px 6px #0000001a}.app-header h1{margin:0 0 .5rem;font-size:2.5rem;font-weight:700}.app-header p{margin:0;font-size:1.1rem;opacity:.9}.tab-navigation{background:#fff;border-bottom:1px solid #e2e8f0;display:flex;justify-content:center;padding:0;box-shadow:0 2px 4px #0000000d}.tab-button{background:none;border:none;padding:1rem 2rem;font-size:1rem;font-weight:500;color:#64748b;cursor:pointer;transition:all .2s ease;border-bottom:3px solid transparent}.tab-button:hover{background-color:#f1f5f9;color:#334155}.tab-button.active{color:#667eea;border-bottom-color:#667eea;background-color:#f8fafc}.app-main{flex:1;max-width:1200px;margin:0 auto;padding:2rem;width:100%;box-sizing:border-box}.app-footer{background:#1e293b;color:#fff;text-align:center;padding:1rem;margin-top:auto}.bulk-create-form,.pattern-generator,.status-viewer,.logs-viewer{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 6px #0000000d;margin-bottom:2rem}.bulk-create-form h2,.pattern-generator h2,.status-viewer h2,.logs-viewer h2{margin:0 0 1.5rem;color:#1e293b;font-size:1.5rem;font-weight:600}.form-section{margin-bottom:2rem}.form-section h3{margin:0 0 1rem;color:#374151;font-size:1.2rem}.form-section p{margin:0 0 1.5rem;color:#6b7280;font-size:.95rem}.upload-form,.pattern-form{display:flex;flex-direction:column;gap:1rem}.pattern-form{max-width:800px}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:2rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;color:#374151;font-size:.9rem}.form-group input{padding:.75rem;border:1px solid #d1d5db;border-radius:8px;font-size:1rem;transition:border-color .2s ease}.form-group input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-group input:disabled{background-color:#f9fafb;cursor:not-allowed}.form-actions{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.preview-btn{background:#10b981;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;font-weight:500;transition:background-color .2s ease}.preview-btn:hover:not(:disabled){background:#059669}.preview-btn:disabled{background:#9ca3af;cursor:not-allowed}.summary-section{background:#f8fafc;padding:1.5rem;border-radius:8px;margin-bottom:2rem;border:1px solid #e2e8f0}.summary-section h3{margin:0 0 1rem;color:#374151;font-size:1.1rem}.summary-section p{margin:.5rem 0;color:#6b7280;font-size:.95rem}.summary-section code{background:#e2e8f0;padding:.25rem .5rem;border-radius:4px;font-family:monospace;font-size:.9rem;color:#374151}.file-input-group{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.file-input{padding:.75rem;border:2px dashed #d1d5db;border-radius:8px;background:#f9fafb;cursor:pointer;transition:all .2s ease;flex:1;min-width:200px}.file-input:hover{border-color:#667eea;background:#f0f4ff}.template-btn{background:#10b981;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;font-weight:500;transition:background-color .2s ease}.template-btn:hover{background:#059669}.submit-btn{background:#667eea;color:#fff;border:none;padding:.875rem 2rem;border-radius:8px;cursor:pointer;font-weight:600;font-size:1rem;transition:all .2s ease;align-self:flex-start}.submit-btn:hover:not(:disabled){background:#5a67d8;transform:translateY(-1px)}.submit-btn:disabled{background:#9ca3af;cursor:not-allowed;transform:none}.preview-section{margin-top:2rem;padding:1.5rem;background:#f8fafc;border-radius:8px;border:1px solid #e2e8f0}.preview-section h3{margin:0 0 1rem;color:#374151;font-size:1.1rem}.preview-table{overflow-x:auto}.preview-table table{width:100%;border-collapse:collapse;font-size:.9rem}.preview-table th,.preview-table td{padding:.75rem;text-align:left;border-bottom:1px solid #e2e8f0}.preview-table th{background:#f1f5f9;font-weight:600;color:#374151}.status-message{padding:1rem;border-radius:8px;margin-top:1rem;font-weight:500}.status-message.success{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0}.status-message.error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}.loading-container{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:60vh;gap:1rem}.loading-spinner{width:40px;height:40px;border:4px solid #f3f4f6;border-top:4px solid #667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 768px){.app-main,.bulk-create-form,.pattern-generator,.status-viewer,.logs-viewer{padding:1rem}.file-input-group{flex-direction:column;align-items:stretch}.input-group{flex-direction:column}.form-grid{grid-template-columns:1fr;gap:1rem}.form-actions{flex-direction:column;align-items:stretch}.preview-btn,.submit-btn{width:100%}}