:root{--primary: #4f46e5;--primary-dark: #4338ca;--primary-light: #818cf8;--secondary: #0d9488;--secondary-dark: #0f766e;--accent: #f59e0b;--bg: #f8fafc;--surface: #ffffff;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--danger: #ef4444;--success: #22c55e;--warning: #f59e0b;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;border:none;border-radius:var(--radius);cursor:pointer;transition:all .15s ease;font-family:inherit}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--secondary);color:#fff}.btn-secondary:hover{background:var(--secondary-dark)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg)}.btn-danger{background:var(--danger);color:#fff}.btn-sm{padding:.375rem .75rem;font-size:.8125rem}input,select,textarea{width:100%;padding:.625rem .875rem;border:1px solid var(--border);border-radius:var(--radius);font-size:.875rem;font-family:inherit;background:var(--surface);color:var(--text)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51a}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.375rem;font-size:.875rem;font-weight:500;color:var(--text)}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}.card-header h2,.card-header h3{font-size:1.125rem;font-weight:600}.badge{display:inline-block;padding:.25rem .625rem;font-size:.75rem;font-weight:500;border-radius:9999px}.badge-success{background:#dcfce7;color:#166534}.badge-warning{background:#fef3c7;color:#92400e}.badge-danger{background:#fee2e2;color:#991b1b}.badge-info{background:#dbeafe;color:#1e40af}.badge-muted{background:#f1f5f9;color:#475569}.grid{display:grid;gap:1.5rem}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.stat-card{background:var(--surface);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}.stat-card .label{font-size:.8125rem;color:var(--text-muted);margin-bottom:.25rem}.stat-card .value{font-size:1.75rem;font-weight:700;color:var(--text)}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border);font-size:.875rem}th{font-weight:600;color:var(--text-muted);background:var(--bg)}.alert{padding:.875rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.875rem}.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}.alert-success{background:#dcfce7;color:#166534;border:1px solid #bbf7d0}.alert-info{background:#dbeafe;color:#1e40af;border:1px solid #bfdbfe}.loading{display:flex;align-items:center;justify-content:center;padding:3rem;color:var(--text-muted)}.empty-state{text-align:center;padding:3rem;color:var(--text-muted)}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.5rem}.product-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .15s,box-shadow .15s}.product-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.product-card .product-image{height:180px;background:linear-gradient(135deg,#e0e7ff,#c7d2fe);display:flex;align-items:center;justify-content:center;font-size:3rem}.product-card .product-body{padding:1rem}.product-card .product-name{font-weight:600;margin-bottom:.25rem}.product-card .product-category{font-size:.75rem;color:var(--text-muted);margin-bottom:.5rem}.product-card .product-price{font-size:1.25rem;font-weight:700;color:var(--primary)}.product-card .product-price .original{font-size:.875rem;color:var(--text-muted);text-decoration:line-through;font-weight:400;margin-left:.5rem}.filters-bar{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem;padding:1rem;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow)}.filters-bar input,.filters-bar select{width:auto;min-width:150px}.navbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 1.5rem;height:64px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;box-shadow:var(--shadow)}.navbar-brand{font-size:1.25rem;font-weight:700;color:var(--primary);text-decoration:none}.navbar-brand:hover{text-decoration:none}.navbar-nav{display:flex;align-items:center;gap:1.5rem;list-style:none}.navbar-nav a{color:var(--text);font-size:.875rem;font-weight:500;text-decoration:none}.navbar-nav a:hover,.navbar-nav a.active{color:var(--primary)}.main-content{max-width:1280px;margin:0 auto;padding:2rem 1.5rem}.page-header{margin-bottom:2rem}.page-header h1{font-size:1.75rem;font-weight:700;margin-bottom:.25rem}.page-header p{color:var(--text-muted)}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#4f46e5,#0d9488)}.login-card{background:var(--surface);border-radius:12px;padding:2.5rem;width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.login-card h1{text-align:center;margin-bottom:.5rem;color:var(--primary)}.login-card .subtitle{text-align:center;color:var(--text-muted);margin-bottom:2rem;font-size:.875rem}.login-card .btn-primary{width:100%;margin-top:.5rem}.login-card .register-link{text-align:center;margin-top:1.5rem;font-size:.875rem;color:var(--text-muted)}.notification-dot{position:relative}.notification-dot:after{content:"";position:absolute;top:-2px;right:-6px;width:8px;height:8px;background:var(--danger);border-radius:50%}.cart-badge{background:var(--accent);color:#fff;font-size:.6875rem;padding:.125rem .375rem;border-radius:9999px;margin-left:.25rem}