:root{--bg-primary:#0f1117;--bg-secondary:#1a1d27;--bg-card:#222636;--bg-input:#2a2e3f;--bg-hover:#2f3448;--text-primary:#f0f2f5;--text-secondary:#9ca3b0;--text-muted:#6b7280;--accent:#6c5ce7;--accent-hover:#7c6ef7;--accent-glow:#6c5ce740;--green:#00b894;--green-bg:#00b8941f;--red:#ff6b6b;--red-bg:#ff6b6b1f;--orange:#fdcb6e;--orange-bg:#fdcb6e1f;--blue:#74b9ff;--blue-bg:#74b9ff1f;--border:#ffffff0f;--shadow:0 4px 24px #0000004d;--radius:12px;--radius-sm:8px;--sidebar-w:260px;--header-h:64px}*{box-sizing:border-box;margin:0;padding:0}html{font-size:14px}body{background:var(--bg-primary);color:var(--text-primary);min-height:100vh;font-family:Inter,sans-serif;overflow-x:hidden}a{color:var(--accent);text-decoration:none}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}img{max-width:100%;display:block}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--bg-hover);border-radius:3px}.app-layout{min-height:100vh}.sidebar{width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border);z-index:100;flex-direction:column;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-brand{border-bottom:1px solid var(--border);padding:20px 24px}.sidebar-brand h2{background:linear-gradient(135deg,var(--accent),var(--blue));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.2rem;font-weight:700}.sidebar-brand small{color:var(--text-muted);font-size:.75rem}.sidebar-nav{flex:1;padding:12px;overflow-y:auto}.nav-item{border-radius:var(--radius-sm);color:var(--text-secondary);align-items:center;gap:12px;margin-bottom:2px;padding:12px 16px;font-weight:500;transition:all .2s;display:flex}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent);color:#fff;box-shadow:0 4px 12px var(--accent-glow)}.nav-item .material-icons-round{font-size:20px}.sidebar-footer{border-top:1px solid var(--border);padding:16px}.btn-logout{background:var(--red-bg);width:100%;color:var(--red);border-radius:var(--radius-sm);border:none;justify-content:center;align-items:center;gap:8px;padding:10px;font-weight:600;transition:all .2s;display:flex}.btn-logout:hover{background:var(--red);color:#fff}.main-content{margin-left:var(--sidebar-w);min-height:100vh}.page-header{border-bottom:1px solid var(--border);background:var(--bg-secondary);z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);justify-content:space-between;align-items:center;gap:12px;padding:20px 28px;display:flex;position:sticky;top:0}.page-header>div:first-child{display:block}.page-header h1{margin-bottom:4px;font-size:1.4rem;font-weight:700;display:inline-block}.page-header .subtitle{color:var(--text-muted);clear:both;font-size:.85rem;display:block}.page-body{padding:24px 28px}.mobile-toggle{color:var(--text-primary);float:left;background:0 0;border:none;margin-top:2px;margin-right:12px;font-size:28px;display:none}.sidebar-overlay{z-index:99;background:#00000080;display:none;position:fixed;inset:0}.stats-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-bottom:24px;display:grid}.stat-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.stat-card .icon{border-radius:10px;justify-content:center;align-items:center;width:42px;height:42px;margin-bottom:12px;font-size:22px;display:flex}.stat-card .icon.purple{background:var(--accent-glow);color:var(--accent)}.stat-card .icon.green{background:var(--green-bg);color:var(--green)}.stat-card .icon.orange{background:var(--orange-bg);color:var(--orange)}.stat-card .icon.blue{background:var(--blue-bg);color:var(--blue)}.stat-card .icon.red{background:var(--red-bg);color:var(--red)}.stat-card .label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.8rem;font-weight:500}.stat-card .value{margin-top:4px;font-size:1.8rem;font-weight:800}.stat-card .glow{opacity:.15;filter:blur(20px);border-radius:50%;width:80px;height:80px;position:absolute;top:-30px;right:-30px}.data-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px;overflow:hidden}.data-header{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;display:flex}.data-header h3{font-size:1.1rem;font-weight:700}.data-table{border-collapse:collapse;width:100%;min-width:600px}.data-table th{text-align:left;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border);background:var(--bg-secondary);white-space:nowrap;padding:12px 16px;font-size:.75rem;font-weight:600}.data-table td{border-bottom:1px solid var(--border);padding:12px 16px;font-size:.9rem}.data-table tr:hover td{background:var(--bg-hover)}.data-table .empty-row td{text-align:center;color:var(--text-muted);padding:40px}.btn{border-radius:var(--radius-sm);border:none;align-items:center;gap:6px;padding:8px 16px;font-size:.85rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 4px 12px var(--accent-glow)}.btn-success{background:var(--green);color:#fff}.btn-success:hover{opacity:.9}.btn-danger{background:var(--red-bg);color:var(--red)}.btn-danger:hover{background:var(--red);color:#fff}.btn-outline{border:1px solid var(--border);color:var(--text-secondary);background:0 0}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.btn-sm{padding:6px 12px;font-size:.8rem}.btn-icon{border-radius:var(--radius-sm);background:var(--bg-input);border:1px solid var(--border);width:34px;height:34px;color:var(--text-secondary);justify-content:center;align-items:center;padding:0;display:flex}.btn-icon:hover{color:var(--accent);border-color:var(--accent)}.form-group{margin-bottom:16px}.form-label{color:var(--text-secondary);margin-bottom:6px;font-size:.85rem;font-weight:600;display:block}.form-input{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);padding:10px 14px;font-size:.9rem;transition:border-color .2s}.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);outline:none}.form-input::placeholder{color:var(--text-muted)}.form-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;opacity:0;pointer-events:none;background:#0009;justify-content:center;align-items:center;padding:20px;transition:opacity .2s;display:flex;position:fixed;inset:0}.modal-overlay.active{opacity:1;pointer-events:all}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:500px;max-height:90vh;overflow-y:auto}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-header h3{font-weight:700}.modal-body{padding:20px}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;padding:12px 20px;display:flex}.products-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:transform .2s,box-shadow .2s;overflow:hidden}.product-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.product-card .photo{background:var(--bg-input);height:160px;color:var(--text-muted);justify-content:center;align-items:center;display:flex;overflow:hidden}.product-card .photo img{object-fit:cover;width:100%;height:100%}.product-card .info{padding:16px}.product-card .info h4{margin-bottom:4px;font-size:1rem;font-weight:700}.product-card .info .price{color:var(--green);font-size:1.1rem;font-weight:700}.product-card .meta{gap:16px;margin:12px 0;display:flex}.product-card .meta-item{text-align:center}.product-card .meta-item .meta-val{font-size:1.2rem;font-weight:700}.product-card .meta-item .meta-label{color:var(--text-muted);text-transform:uppercase;font-size:.7rem}.product-card .actions,.product-card .sale-input{gap:8px;padding:0 16px 16px;display:flex}.product-card .sale-input input{flex:1}.badge{border-radius:20px;padding:4px 10px;font-size:.75rem;font-weight:600;display:inline-flex}.badge-green{background:var(--green-bg);color:var(--green)}.badge-orange{background:var(--orange-bg);color:var(--orange)}.badge-blue{background:var(--blue-bg);color:var(--blue)}.badge-red{background:var(--red-bg);color:var(--red)}.badge-purple{background:var(--accent-glow);color:var(--accent)}.chart-container{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:24px;padding:20px}.chart-container h3{margin-bottom:16px;font-size:1rem;font-weight:700}.chart-wrap{height:300px;position:relative}.login-page{background:var(--bg-primary);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background:var(--bg-card);border:1px solid var(--border);width:100%;max-width:420px;box-shadow:var(--shadow);border-radius:16px;padding:40px}.login-card .logo{text-align:center;margin-bottom:32px}.login-card .logo h1{background:linear-gradient(135deg,var(--accent),var(--blue));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.8rem;font-weight:800}.login-card .logo p{color:var(--text-muted);margin-top:4px;font-size:.9rem}.login-error{background:var(--red-bg);color:var(--red);border-radius:var(--radius-sm);margin-bottom:16px;padding:10px 14px;font-size:.85rem;display:none}.login-card .btn-primary{width:100%;margin-top:8px;padding:12px;font-size:1rem}.toast-container{z-index:999;flex-direction:column;gap:8px;display:flex;position:fixed;top:20px;right:20px}.toast{border-radius:var(--radius-sm);box-shadow:var(--shadow);padding:12px 20px;font-size:.85rem;font-weight:600;animation:.3s slideIn}.toast-success{background:var(--green);color:#fff}.toast-error{background:var(--red);color:#fff}@keyframes slideIn{0%{opacity:0;transform:translate(100px)}to{opacity:1;transform:translate(0)}}.loading{justify-content:center;align-items:center;padding:60px;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:36px;height:36px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.grid-2{grid-template-columns:1fr 1fr;gap:20px;display:grid}.top-list{list-style:none}.top-list li{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:10px 0;display:flex}.top-list li:last-child{border:none}.top-list .rank{background:var(--accent-glow);width:28px;height:28px;color:var(--accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-right:12px;font-size:.8rem;font-weight:700;display:flex}.top-list .item-info{flex:1}.top-list .item-name{font-size:.9rem;font-weight:600}.top-list .item-sub{color:var(--text-muted);font-size:.75rem}.top-list .item-val{color:var(--green);font-weight:700}.dash-welcome{border-radius:var(--radius);background:linear-gradient(135deg,#6c5ce7 0%,#a29bfe 50%,#74b9ff 100%);margin-bottom:24px;padding:28px 32px;position:relative;overflow:hidden}.dash-welcome:before{content:"";background:radial-gradient(circle,#ffffff26 0%,#0000 70%);border-radius:50%;width:300px;height:300px;position:absolute;top:-50%;right:-20%}.dash-welcome:after{content:"";background:radial-gradient(circle,#ffffff1a 0%,#0000 70%);border-radius:50%;width:200px;height:200px;position:absolute;bottom:-40%;left:10%}.dash-welcome h2{color:#fff;z-index:1;font-size:1.5rem;font-weight:800;position:relative}.dash-welcome p{color:#fffc;z-index:1;margin-top:4px;font-size:.9rem;position:relative}.dash-welcome .dash-time{color:#fff9;z-index:1;margin-top:8px;font-size:.8rem;position:relative}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s;position:relative;overflow:hidden}.stat-card:after{content:"";pointer-events:none;background:linear-gradient(135deg,#0000 40%,#ffffff08 100%);position:absolute;inset:0}.stat-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px #0006}.summary-cards{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-bottom:24px;display:grid}.summary-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.summary-card h4{align-items:center;gap:8px;margin-bottom:12px;font-size:.9rem;font-weight:700;display:flex}.summary-card .progress-row{align-items:center;gap:10px;margin-bottom:8px;font-size:.82rem;display:flex}.summary-card .progress-label{min-width:100px;color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.summary-card .progress-bar{background:var(--bg-input);border-radius:4px;flex:1;height:8px;overflow:hidden}.summary-card .progress-fill{border-radius:4px;height:100%;transition:width .6s cubic-bezier(.4,0,.2,1)}.summary-card .progress-val{text-align:right;min-width:50px;font-size:.8rem;font-weight:700}.btn-download-dash{color:#fff;border-radius:var(--radius-sm);background:linear-gradient(135deg,#6c5ce7,#a29bfe);border:none;align-items:center;gap:8px;padding:10px 20px;font-size:.85rem;font-weight:700;transition:all .3s;display:inline-flex;box-shadow:0 4px 15px #6c5ce74d}.btn-download-dash:hover{transform:translateY(-2px);box-shadow:0 6px 20px #6c5ce780}@media (width<=768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.open,.mobile-toggle{display:block}.main-content{margin-left:0}.stats-grid{grid-template-columns:1fr 1fr}.form-row,.grid-2,.products-grid{grid-template-columns:1fr}.page-body{padding:16px}.data-table{font-size:.8rem}.data-table th,.data-table td{padding:8px 10px}}@media (width<=480px){.stats-grid{grid-template-columns:1fr}}