:root{--navy: #1c2438;--navy-light: #262f47;--teal: #2dd4d4;--teal-dark: #14b8b8;--border: #e5e7eb;--text-muted: #94a3b8}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f4f6f9;color:#1f2937}.layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--navy);color:#fff;display:flex;flex-direction:column;padding:20px 0;flex-shrink:0}.brand{font-size:20px;font-weight:700;color:var(--teal);padding:0 20px 20px}.brand span{color:#fff;font-weight:400}.sidebar nav{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px}.side-group{margin-top:14px}.side-group-label{font-size:11px;letter-spacing:.06em;color:var(--text-muted);padding:6px 20px;font-weight:700}.side-link{display:block;width:100%;text-align:left;background:none;border:none;color:#cbd5e1;text-decoration:none;padding:10px 20px;font-size:14px;cursor:pointer;border-left:3px solid transparent}.side-link:hover{background:var(--navy-light);color:#fff}.side-link.active{background:var(--navy-light);color:var(--teal);border-left:3px solid var(--teal);font-weight:600}.side-toggle{display:flex;justify-content:space-between;align-items:center}.chevron{transition:transform .15s;font-size:11px}.chevron.open{transform:rotate(180deg)}.side-submenu-items{display:flex;flex-direction:column}.side-submenu-items .side-link{padding-left:36px;font-size:13px}.logout-btn{margin:16px 20px 0;background:#ef4444;color:#fff;border:none;padding:10px;border-radius:8px;cursor:pointer;font-size:14px}.main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{background:#fff;border-bottom:1px solid var(--border);padding:14px 28px;display:flex;align-items:center;justify-content:space-between}.breadcrumb{font-size:15px;font-weight:600;color:#334155}.topbar-user{display:flex;align-items:center;gap:10px;font-size:14px;color:#475569}.avatar{width:30px;height:30px;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px}.bell{opacity:.7}.content{flex:1;padding:24px 28px}.content h1{font-size:20px;margin:0 0 16px;color:#1e293b}.content h3{font-size:15px;margin:24px 0 10px;color:#334155}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px}.card-value{font-size:26px;font-weight:700;color:#1e293b}.card-label{color:#64748b;margin-top:4px;font-size:13px}table{width:100%;border-collapse:collapse;background:#fff;margin-top:16px;border-radius:10px;overflow:hidden;border:1px solid var(--border)}th,td{text-align:left;padding:12px 14px;font-size:13.5px}th{background:var(--navy);color:#e2e8f0;font-weight:600;text-transform:uppercase;font-size:11.5px;letter-spacing:.03em}td{border-bottom:1px solid var(--border);color:#334155}tr:last-child td{border-bottom:none}tr.low-stock td{background:#fef2f2}td[colspan]{text-align:center;color:#94a3b8;padding:32px}button{cursor:pointer;border:none;background:var(--teal);color:#07393c;padding:9px 16px;border-radius:999px;margin-right:6px;font-size:13px;font-weight:600}button:hover{background:var(--teal-dark)}button:disabled{background:#cbd5e1;color:#64748b;cursor:not-allowed}table button{border-radius:6px;padding:6px 10px;font-size:12px;background:#eef2ff;color:#3730a3}table button:hover{background:#e0e7ff}.crud-form,.crud-form-block{background:#fff;border:1px solid var(--border);padding:18px;border-radius:12px;margin-bottom:18px;display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}.crud-form-block{flex-direction:column;align-items:stretch}.form-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:8px}.form-field{display:flex;flex-direction:column;gap:4px}.form-field label{font-size:12px;color:#64748b;font-weight:600}input,select{padding:9px 10px;border:1px solid var(--border);border-radius:8px;font-size:14px;color:#1f2937}input:focus,select:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px #2dd4d426}.report-filters{display:flex;gap:12px;align-items:flex-end;margin-bottom:16px}.error{background:#fee2e2;color:#b91c1c;padding:10px 14px;border-radius:8px;margin-bottom:12px;font-size:13px}.stock-alert{background:#fffbeb;border:1px solid #f59e0b;color:#92400e;padding:14px 16px;border-radius:12px;margin-bottom:20px}.stock-alert ul{margin:8px 0;padding-left:20px}.stock-alert a{color:#92400e;font-weight:600}.login-page{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--navy)}.login-form{background:#fff;padding:36px;border-radius:16px;width:340px;display:flex;flex-direction:column;gap:14px;box-shadow:0 10px 40px #00000040}.login-form h1{font-size:20px;margin:0 0 6px;color:var(--navy)}