:root{--primary: #2563eb;--primary-hover: #1d4ed8;--success: #16a34a;--warning: #ca8a04;--danger: #ef4444;--bg: #f8fafc;--card: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}body{background:var(--bg);color:var(--text);padding:1rem;max-width:1024px;margin:0 auto}h1,h2,h3,h4{font-weight:600;letter-spacing:-.025em;color:var(--text)}.card{background:var(--card);padding:1.25rem;border-radius:12px;box-shadow:var(--shadow-sm);border:1px solid var(--border);margin-bottom:1rem;transition:box-shadow .2s ease}.card:hover{box-shadow:var(--shadow-md)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.6rem 1rem;border:none;border-radius:8px;cursor:pointer;font-weight:500;font-size:.95rem;transition:all .2s ease;min-height:44px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 2px 4px #2563eb33}.btn-primary:hover:not(:disabled){background:var(--primary-hover);box-shadow:0 4px 6px #2563eb4d}.btn-success{background:var(--success);color:#fff}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.btn-ghost:hover:not(:disabled){background:#f1f5f9;color:var(--text)}.nav{display:flex;gap:.5rem;margin-bottom:1.25rem;background:var(--card);padding:.5rem;border-radius:12px;box-shadow:var(--shadow-sm);border:1px solid var(--border);overflow-x:auto;white-space:nowrap}.nav button{flex:1;padding:.75rem .6rem;border:none;background:transparent;color:var(--muted);border-radius:8px;font-weight:500;font-size:.85rem;cursor:pointer;transition:all .2s ease;position:relative;min-height:44px}.nav button:hover{background:#f8fafc;color:var(--text)}.nav button.active{background:var(--primary);color:#fff;box-shadow:0 2px 4px #2563eb33}input,select{width:100%;padding:.75rem;margin:.4rem 0;border:1px solid var(--border);border-radius:8px;background:#f8fafc;font-size:.95rem;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;min-height:44px}input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a;background:var(--card)}.badge{display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:600;padding:.2rem .5rem;border-radius:9999px}.stock-high{color:var(--success);background:#dcfce7;border:1px solid #bbf7d0}.stock-low{color:var(--warning);background:#fef3c7;border:1px solid #fde68a}.stock-out{color:var(--danger);background:#fee2e2;border:1px solid #fecaca}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .3s ease-out forwards}.bulk-edit-bar{display:flex;gap:.8rem;align-items:center;background:#f8fafc;padding:.8rem;border-radius:8px;border:1px solid var(--border);flex-wrap:wrap}.bulk-edit-inputs{display:flex;gap:.4rem;flex:1;min-width:280px;align-items:center;flex-wrap:wrap}.bulk-edit-select{flex:1;min-width:150px;padding:.6rem!important;border-radius:6px;border:1px solid var(--border);margin:0!important;min-height:38px!important}.bulk-edit-new-cat{display:flex;gap:.2rem;align-items:center;border-left:2px solid var(--border);padding-left:.8rem;flex:1;min-width:200px}.bulk-edit-new-cat input{flex:1;min-width:100px;padding:.5rem!important;margin:0!important;border:1px dashed var(--border);border-radius:6px;font-size:.8rem;min-height:38px!important}.bulk-edit-btn{padding:.6rem 1.25rem!important;display:flex;gap:.4rem;align-items:center;min-width:160px;min-height:38px!important}@media (max-width: 480px){body{padding:.5rem}.nav{gap:.2rem;padding:.35rem}.nav button{padding:.55rem .3rem;font-size:.72rem;gap:.15rem}.card{padding:.85rem;border-radius:10px;overflow-wrap:break-word;word-break:break-word}table{font-size:.8rem}td,th{padding:.5rem!important}.bulk-edit-bar{flex-direction:column;align-items:stretch;padding:.8rem .5rem}.bulk-edit-inputs{flex-direction:column;align-items:stretch;width:100%;min-width:0;gap:.8rem}.bulk-edit-select{width:100%}.bulk-edit-new-cat{border-left:none;border-top:1px dashed var(--border);padding-left:0;padding-top:.8rem;margin-top:.2rem;width:100%}.bulk-edit-btn{width:100%;justify-content:center}}@media (min-width: 431px) and (max-width: 820px){body{padding:1.25rem}.card{padding:1.5rem}}@media (min-width: 821px){body{padding:2rem}.card{padding:1.75rem}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-spin{animation:spin 1s linear infinite}