*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:#f5f7fa;color:#2c3e50}.app{display:flex;min-height:100vh}.sidebar{width:250px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:20px;position:fixed;height:100vh;overflow-y:auto}.logo h1{font-size:2em;margin-bottom:5px}.logo p{opacity:.8;font-size:.9em}.nav-links{list-style:none;margin-top:40px}.nav-links li{margin:10px 0}.nav-links a{color:#fff;text-decoration:none;display:block;padding:12px 16px;border-radius:8px;transition:background .2s}.nav-links a:hover{background:#ffffff1a}.nav-links li.active a{background:#fff3}.main-content{margin-left:250px;flex:1;padding:30px}.page-header{margin-bottom:30px}.page-header h2{font-size:2em;color:#2c3e50}.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-bottom:30px}.card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 8px #00000014;border-left:4px solid #667eea}.card h3{color:#667eea;font-size:.9em;text-transform:uppercase;margin-bottom:12px}.card .value{font-size:2.5em;font-weight:700;color:#2c3e50}.card .subtitle{color:#7f8c8d;margin-top:8px}.table-container{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 8px #00000014;margin-bottom:20px;overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:12px;background:#f8f9fa;color:#667eea;font-weight:600;text-transform:uppercase;font-size:.85em}td{padding:16px 12px;border-bottom:1px solid #e9ecef}tr:hover{background:#f8f9fa}.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.85em;font-weight:500}.badge-draft{background:#e9ecef;color:#495057}.badge-sent{background:#e3f2fd;color:#1976d2}.badge-viewed{background:#fff3e0;color:#f57c00}.badge-accepted{background:#e8f5e9;color:#388e3c}.badge-lost{background:#ffebee;color:#d32f2f}.search-box{width:100%;padding:12px 16px;border:2px solid #e9ecef;border-radius:8px;font-size:1em;margin-bottom:20px}.search-box:focus{outline:none;border-color:#667eea}.alert{padding:16px;border-radius:8px;margin-bottom:16px;border-left:4px solid}.alert-warning{background:#fff3e0;border-color:#f57c00;color:#e65100}.alert-success{background:#e8f5e9;border-color:#388e3c;color:#1b5e20}.alert-info{background:#e3f2fd;border-color:#1976d2;color:#0d47a1}.btn{display:inline-block;padding:10px 20px;border-radius:6px;text-decoration:none;font-weight:500;cursor:pointer;border:none;font-size:.95em;transition:all .2s}.btn-primary{background:#667eea;color:#fff}.btn-primary:hover{background:#5568d3}.btn-secondary{background:#e9ecef;color:#495057}.btn-secondary:hover{background:#dee2e6}.loading{text-align:center;padding:40px;color:#7f8c8d}.customer-header{background:#fff;border-radius:12px;padding:24px;margin-bottom:20px;box-shadow:0 2px 8px #00000014}.customer-header h2{margin-bottom:8px}.customer-meta{color:#7f8c8d;margin-bottom:16px}.section{background:#fff;border-radius:12px;padding:24px;margin-bottom:20px;box-shadow:0 2px 8px #00000014}.section h3{color:#667eea;margin-bottom:16px;font-size:1.3em}@media(max-width:768px){.sidebar{width:100%;height:auto;position:relative}.main-content{margin-left:0}.cards-grid{grid-template-columns:1fr}}