:root{--bg-primary: #0a0a0a;--bg-secondary: #111111;--bg-card: #161616;--bg-card-hover: #1a1a1a;--bg-input: #1e1e1e;--bg-overlay: rgba(0, 0, 0, .7);--border: #252525;--border-hover: #333333;--text-primary: #e8e8e8;--text-secondary: #999999;--text-muted: #606060;--accent: #4dc9f6;--accent-dim: rgba(77, 201, 246, .12);--accent-hover: #6dd5f8;--brand-red: #c0392b;--brand-red-dim: rgba(192, 57, 43, .12);--green: #22c55e;--green-dim: rgba(34, 197, 94, .12);--red: #ef4444;--red-dim: rgba(239, 68, 68, .12);--blue: #4dc9f6;--blue-dim: rgba(77, 201, 246, .12);--orange: #f59e0b;--orange-dim: rgba(245, 158, 11, .12);--radius: 10px;--radius-sm: 6px;--radius-lg: 14px;--shadow: 0 1px 3px rgba(0,0,0,.4);--shadow-lg: 0 8px 32px rgba(0,0,0,.5);--font-body: "DM Sans", -apple-system, sans-serif;--font-mono: "JetBrains Mono", monospace;--sidebar-width: 240px;--header-height: 64px}[data-theme=light]{--bg-primary: #f4f5f7;--bg-secondary: #ffffff;--bg-card: #ffffff;--bg-card-hover: #f9fafb;--bg-input: #f0f1f3;--bg-overlay: rgba(0, 0, 0, .4);--border: #e0e2e6;--border-hover: #cccfd4;--text-primary: #111111;--text-secondary: #555555;--text-muted: #999999;--accent: #1a8fc4;--accent-dim: rgba(26, 143, 196, .1);--accent-hover: #1578a5;--green: #16864e;--green-dim: rgba(22, 134, 78, .1);--red: #c0392b;--red-dim: rgba(192, 57, 43, .08);--blue: #1a8fc4;--blue-dim: rgba(26, 143, 196, .1);--orange: #c97a0a;--orange-dim: rgba(201, 122, 10, .1);--shadow: 0 1px 3px rgba(0,0,0,.08);--shadow-lg: 0 8px 32px rgba(0,0,0,.1)}[data-theme=light] .sidebar{box-shadow:1px 0 0 var(--border)}[data-theme=light] .stat-card,[data-theme=light] .card{box-shadow:0 1px 2px #0000000a}[data-theme=light] .btn-primary{color:#fff}[data-theme=light] .form-input,[data-theme=light] .form-select{background:#fff;border-color:#d0d3d8}[data-theme=light] .nav-item.active,[data-theme=light] .admin-badge.unlocked{background:var(--accent-dim);color:var(--accent)}[data-theme=light] ::-webkit-scrollbar-thumb{background:#ccc}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden}#root{min-height:100vh}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}.app-layout{display:flex;min-height:100vh}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column}.page-container{flex:1;padding:28px 32px;max-width:1400px;width:100%}.page-header{margin-bottom:28px}.page-header h1{font-size:1.8rem;font-weight:600;letter-spacing:-.03em;color:var(--text-primary)}.page-header p{color:var(--text-secondary);font-size:.95rem;margin-top:4px}.sidebar{width:var(--sidebar-width);height:100vh;position:fixed;left:0;top:0;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:100;transition:transform .25s ease}.sidebar-logo{padding:18px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center}.sidebar-logo img{height:36px;width:auto;object-fit:contain}.sidebar-logo span{font-weight:700;font-size:1.1rem;letter-spacing:.06em;text-transform:uppercase}.sidebar-logo .logo-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;display:inline-block}.sidebar-nav{flex:1;padding:16px 10px;display:flex;flex-direction:column;gap:2px}.nav-section-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);padding:16px 12px 6px;font-weight:600}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text-secondary);text-decoration:none;font-size:.92rem;font-weight:450;cursor:pointer;transition:all .15s ease;border:none;background:none;width:100%;text-align:left}.nav-item:hover{color:var(--text-primary);background:var(--bg-card)}.nav-item.active{color:var(--accent);background:var(--accent-dim)}.nav-item svg{width:18px;height:18px;flex-shrink:0}.sidebar-footer{padding:16px;border-top:1px solid var(--border)}.admin-badge{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);font-size:.78rem;font-weight:500;cursor:pointer;border:none;width:100%;transition:all .15s ease}.admin-badge.locked{background:var(--bg-card);color:var(--text-secondary)}.admin-badge.unlocked{background:var(--accent-dim);color:var(--accent)}.admin-badge:hover{background:var(--bg-card-hover)}.admin-badge.unlocked:hover{background:#c8ff002e}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:border-color .15s ease}.card:hover{border-color:var(--border-hover)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{font-size:.82rem;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.stat-label{font-size:.78rem;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}.stat-value{font-size:1.9rem;font-weight:700;font-family:var(--font-mono);letter-spacing:-.03em}.stat-value.green{color:var(--green)}.stat-value.red{color:var(--red)}.stat-value.blue{color:var(--blue)}.stat-value.accent{color:var(--accent)}.stat-sub{font-size:.75rem;color:var(--text-muted);margin-top:4px}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse}thead th{text-align:left;padding:10px 14px;font-size:.73rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap}tbody td{padding:12px 14px;font-size:.92rem;border-bottom:1px solid var(--border);color:var(--text-primary)}tbody tr:hover{background:var(--bg-card-hover)}tbody tr:last-child td{border-bottom:none}td.mono{font-family:var(--font-mono);font-size:.84rem}td.green{color:var(--green)}td.red{color:var(--red)}.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:var(--radius-sm);font-size:.85rem;font-weight:550;font-family:var(--font-body);cursor:pointer;border:1px solid transparent;transition:all .15s ease;white-space:nowrap}.btn-primary{background:var(--accent);color:#0a0a0a;border-color:var(--accent);font-weight:600}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-input);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover{border-color:var(--border-hover);background:var(--bg-card-hover)}.btn-danger{background:var(--red-dim);color:var(--red);border-color:transparent}.btn-danger:hover{background:#ef444433}.btn-sm{padding:6px 12px;font-size:.8rem}.btn-icon{padding:8px;border-radius:var(--radius-sm);background:transparent;border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:all .15s ease}.btn-icon:hover{border-color:var(--border-hover);color:var(--text-primary)}.form-group{margin-bottom:18px}.form-label{display:block;font-size:.8rem;font-weight:500;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}.form-input,.form-select{width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:.9rem;font-family:var(--font-body);transition:border-color .15s ease;outline:none}.form-input:focus,.form-select:focus{border-color:var(--accent)}.form-input::placeholder{color:var(--text-muted)}.form-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23555' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.chip{display:inline-flex;align-items:center;padding:4px 10px;border-radius:20px;font-size:.73rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.chip-green{background:var(--green-dim);color:var(--green)}.chip-red{background:var(--red-dim);color:var(--red)}.chip-blue{background:var(--blue-dim);color:var(--blue)}.chip-orange{background:var(--orange-dim);color:var(--orange)}.chip-accent{background:var(--accent-dim);color:var(--accent)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg-overlay);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;width:100%;max-width:520px;max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal h2{font-size:1.2rem;font-weight:600;margin-bottom:20px;letter-spacing:-.02em}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px}.pin-input{display:flex;gap:10px;justify-content:center;margin:24px 0}.pin-input input{width:52px;height:60px;text-align:center;font-size:1.5rem;font-family:var(--font-mono);background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);outline:none;transition:border-color .15s ease}.pin-input input:focus{border-color:var(--accent)}.tab-bar{display:flex;gap:2px;border-bottom:1px solid var(--border);margin-bottom:24px}.tab{padding:10px 18px;font-size:.85rem;font-weight:500;color:var(--text-secondary);cursor:pointer;border:none;background:none;font-family:var(--font-body);border-bottom:2px solid transparent;margin-bottom:-1px;transition:all .15s ease}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.text-green{color:var(--green)}.text-red{color:var(--red)}.text-accent{color:var(--accent)}.text-muted{color:var(--text-muted)}.text-secondary{color:var(--text-secondary)}.font-mono{font-family:var(--font-mono)}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}.flex{display:flex}.items-center{align-items:center}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted)}.empty-state svg{margin-bottom:16px;opacity:.3}.empty-state p{font-size:.9rem}.toast-container{position:fixed;bottom:24px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:8px}.toast{padding:12px 20px;border-radius:var(--radius);font-size:.85rem;font-weight:500;box-shadow:var(--shadow-lg);animation:toastIn .3s ease}.toast-success{background:var(--green-dim);color:var(--green);border:1px solid rgba(34,197,94,.25)}.toast-error{background:var(--red-dim);color:var(--red);border:1px solid rgba(239,68,68,.25)}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--border);z-index:90;padding:0 16px;align-items:center;justify-content:space-between}.hamburger{background:none;border:none;color:var(--text-primary);cursor:pointer;padding:8px;display:flex;align-items:center}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99}.sale-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:8px}.sale-item-product{flex:2}.sale-item-qty,.sale-item-discount{flex:1}.sale-item-total{flex:1;text-align:right;font-family:var(--font-mono);font-weight:600}.sale-item .form-input,.sale-item .form-select{padding:7px 10px;font-size:.84rem}.sale-item-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;transition:color .15s ease}.sale-item-remove:hover{color:var(--red)}@media (max-width: 1024px){.stats-grid{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr 1fr}}@media (max-width: 768px){.mobile-header{display:flex}.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.sidebar-nav{flex:0}.main-content{margin-left:0;padding-top:var(--header-height)}.page-container{padding:20px 16px}.stats-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{padding:14px}.stat-value{font-size:1.35rem}.grid-2,.grid-3,.form-row{grid-template-columns:1fr}.modal{padding:20px;margin:10px;max-height:90vh}.sale-item{flex-wrap:wrap}.sale-item-product{flex-basis:100%}.tab-bar{overflow-x:auto;-webkit-overflow-scrolling:touch}.tab{white-space:nowrap;padding:10px 14px;font-size:.8rem}table{font-size:.82rem}thead th,tbody td{padding:10px}}@media (max-width: 480px){.stats-grid{grid-template-columns:1fr}.page-header h1{font-size:1.35rem}}