*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-primary:#0f0f1a;--bg-secondary:#1a1a2e;--bg-card:#16213e;--bg-hover:#1f2b47;
  --text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;
  --accent:#7c3aed;--accent-hover:#6d28d9;--accent-light:#a78bfa;
  --blue:#3b82f6;--green:#10b981;--red:#ef4444;--yellow:#f59e0b;
  --border:#2d3748;--radius:8px;--radius-lg:12px;
  --shadow:0 4px 6px -1px rgba(0,0,0,0.3);--shadow-lg:0 10px 25px -5px rgba(0,0,0,0.4);
}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}
a{color:var(--accent-light);text-decoration:none}
a:hover{color:var(--accent)}
button{cursor:pointer;font-family:inherit}
input,select,textarea{font-family:inherit;background:var(--bg-primary);border:1px solid var(--border);color:var(--text-primary);padding:10px 14px;border-radius:var(--radius);font-size:14px;outline:none;transition:border .2s}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}

.nav{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px;position:sticky;top:0;z-index:100}
.nav-brand{font-size:20px;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:8px}
.nav-brand span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{color:var(--text-secondary);font-size:14px;font-weight:500;padding:8px 0;border-bottom:2px solid transparent;transition:all .2s}
.nav-links a:hover,.nav-links a.active{color:var(--text-primary);border-bottom-color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-search{position:relative}
.nav-search input{width:240px;padding:8px 12px 8px 36px;border-radius:20px;background:var(--bg-primary);font-size:13px}

.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:500;border:none;transition:all .2s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-secondary{background:var(--bg-hover);color:var(--text-primary);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--accent)}
.btn-sm{padding:6px 14px;font-size:13px}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-success{background:var(--green);color:#fff}
.btn-success:hover{background:#059669}
.btn-ghost{background:transparent;color:var(--text-secondary);padding:6px 10px}
.btn-ghost:hover{color:var(--text-primary);background:var(--bg-hover)}

.hero{padding:80px 24px;text-align:center;background:linear-gradient(135deg,var(--bg-secondary) 0%,#1a1040 50%,var(--bg-secondary) 100%);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 30% 50%,rgba(124,58,237,0.08) 0%,transparent 50%),radial-gradient(circle at 70% 50%,rgba(59,130,246,0.06) 0%,transparent 50%)}
.hero h1{font-size:42px;font-weight:800;margin-bottom:16px;position:relative}
.hero h1 span{background:linear-gradient(135deg,var(--accent-light),var(--blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{color:var(--text-secondary);font-size:18px;max-width:600px;margin:0 auto 32px;position:relative}
.hero-search{max-width:500px;margin:0 auto;position:relative}
.hero-search input{width:100%;padding:14px 20px;border-radius:28px;font-size:16px;background:var(--bg-card);border:1px solid var(--border)}
.hero-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(124,58,237,0.15)}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:48px;position:relative}
.hero-stat{text-align:center}
.hero-stat .num{font-size:28px;font-weight:700;color:var(--text-primary)}
.hero-stat .label{font-size:13px;color:var(--text-muted);margin-top:4px}

.section{padding:48px 24px;max-width:1200px;margin:0 auto}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.section-title{font-size:22px;font-weight:700}

.cat-grid{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.cat-pill{padding:8px 18px;border-radius:20px;background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}
.cat-pill:hover,.cat-pill.active{background:var(--accent);color:#fff;border-color:var(--accent)}

.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px}
.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;cursor:pointer}
.product-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.product-img{height:180px;background:linear-gradient(135deg,#1a1040,#16213e);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.product-img img{width:100%;height:100%;object-fit:cover}
.product-img .placeholder{font-size:48px;opacity:.3}
.product-badge{position:absolute;top:10px;right:10px;padding:4px 10px;border-radius:12px;font-size:11px;font-weight:600;text-transform:uppercase}
.product-badge.featured{background:var(--yellow);color:#000}
.product-body{padding:16px}
.product-category{font-size:11px;text-transform:uppercase;color:var(--accent-light);font-weight:600;letter-spacing:.5px;margin-bottom:6px}
.product-title{font-size:16px;font-weight:600;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.product-desc{font-size:13px;color:var(--text-secondary);margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-meta{display:flex;align-items:center;justify-content:space-between}
.product-price{font-size:18px;font-weight:700;color:var(--accent-light)}
.product-stats{display:flex;gap:12px;font-size:12px;color:var(--text-muted)}
.product-vendor{font-size:12px;color:var(--text-muted);margin-bottom:8px}

.product-detail{max-width:1000px;margin:0 auto;padding:32px 24px}
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.pd-image{height:400px;background:var(--bg-card);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--border)}
.pd-image img{width:100%;height:100%;object-fit:cover}
.pd-info h1{font-size:28px;font-weight:700;margin-bottom:8px}
.pd-vendor{color:var(--text-muted);font-size:14px;margin-bottom:16px}
.pd-price{font-size:32px;font-weight:800;color:var(--accent-light);margin-bottom:20px}
.pd-desc{color:var(--text-secondary);margin-bottom:24px;line-height:1.7}
.pd-actions{display:flex;gap:12px;margin-bottom:24px}
.pd-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.pd-tags .tag{padding:4px 12px;border-radius:12px;background:var(--bg-hover);font-size:12px;color:var(--text-muted)}
.pd-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:16px;background:var(--bg-secondary);border-radius:var(--radius);border:1px solid var(--border)}
.pd-stat{text-align:center}
.pd-stat .val{font-size:20px;font-weight:700}
.pd-stat .lbl{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-top:2px}
.reviews-section{margin-top:40px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}
.review-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.review-user{font-weight:600;font-size:14px}
.review-date{font-size:12px;color:var(--text-muted)}
.review-text{color:var(--text-secondary);font-size:14px}

.auth-page{min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;padding:24px}
.auth-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:420px}
.auth-card h2{font-size:24px;margin-bottom:8px}
.auth-card .subtitle{color:var(--text-secondary);margin-bottom:24px;font-size:14px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text-secondary)}
.form-group input,.form-group select,.form-group textarea{width:100%}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

.dash-layout{display:grid;grid-template-columns:250px 1fr;min-height:calc(100vh - 64px)}
.sidebar{background:var(--bg-secondary);border-right:1px solid var(--border);padding:20px 0}
.sidebar-section{padding:0 16px;margin-bottom:24px}
.sidebar-section .label{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);padding:0 12px;margin-bottom:8px}
.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius);color:var(--text-secondary);font-size:14px;transition:all .15s;margin-bottom:2px;cursor:pointer}
.sidebar-link:hover{background:var(--bg-hover);color:var(--text-primary)}
.sidebar-link.active{background:rgba(124,58,237,.15);color:var(--accent-light)}
.dash-content{padding:24px;overflow-y:auto;max-height:calc(100vh - 64px)}
.dash-header{margin-bottom:24px}
.dash-header h1{font-size:24px;font-weight:700}
.dash-header p{color:var(--text-secondary);font-size:14px}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}
.stat-card .label{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}
.stat-card .value{font-size:28px;font-weight:700;margin-top:4px}
.stat-card .sub{font-size:12px;color:var(--text-muted);margin-top:4px}
.stat-card.purple .value{color:var(--accent-light)}
.stat-card.blue .value{color:var(--blue)}
.stat-card.green .value{color:var(--green)}
.stat-card.yellow .value{color:var(--yellow)}
.stat-card.red .value{color:var(--red)}

.table-wrap{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:24px}
.table-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.table-header h3{font-size:16px;font-weight:600}
table{width:100%;border-collapse:collapse}
th{text-align:left;padding:12px 20px;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);border-bottom:1px solid var(--border);font-weight:600}
td{padding:12px 20px;border-bottom:1px solid var(--border);font-size:14px}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg-hover)}
.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:11px;font-weight:600}
.badge-green{background:rgba(16,185,129,.15);color:var(--green)}
.badge-red{background:rgba(239,68,68,.15);color:var(--red)}
.badge-yellow{background:rgba(245,158,11,.15);color:var(--yellow)}
.badge-blue{background:rgba(59,130,246,.15);color:var(--blue)}
.badge-purple{background:rgba(124,58,237,.15);color:var(--accent-light)}

.chart-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;margin-bottom:24px}
.chart-card h3{font-size:16px;font-weight:600;margin-bottom:16px}
.chart-bar-wrap{display:flex;align-items:flex-end;gap:8px;height:200px;padding-top:20px}
.chart-bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}
.chart-bar{width:100%;border-radius:4px 4px 0 0;background:var(--accent);min-height:4px;transition:height .3s}
.chart-bar-label{font-size:10px;color:var(--text-muted)}
.chart-bar-value{font-size:11px;font-weight:600;color:var(--text-secondary)}

.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:200;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-overlay.active{opacity:1;pointer-events:auto}
.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;width:100%;max-width:500px;max-height:80vh;overflow-y:auto}
.modal h3{font-size:18px;margin-bottom:16px}

.footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:40px 24px;margin-top:60px}
.footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand{font-size:18px;font-weight:700;margin-bottom:12px}
.footer-brand span{color:var(--accent)}
.footer-desc{color:var(--text-muted);font-size:13px;line-height:1.6}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:12px}
.footer-col a{display:block;color:var(--text-muted);font-size:13px;margin-bottom:8px;transition:color .2s}
.footer-col a:hover{color:var(--accent-light)}
.footer-bottom{max-width:1200px;margin:24px auto 0;padding-top:24px;border-top:1px solid var(--border);text-align:center;color:var(--text-muted);font-size:13px}

.toast-container{position:fixed;top:80px;right:24px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 20px;border-radius:var(--radius);font-size:14px;animation:slideIn .3s ease;box-shadow:var(--shadow-lg)}
.toast-success{background:var(--green);color:#fff}
.toast-error{background:var(--red);color:#fff}
.toast-info{background:var(--blue);color:#fff}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

.empty-state{text-align:center;padding:60px 24px;color:var(--text-muted)}
.empty-state h3{font-size:18px;color:var(--text-secondary);margin-bottom:8px}
.empty-state p{font-size:14px;margin-bottom:16px}

@media(max-width:768px){
  .nav-links{display:none}
  .hero h1{font-size:28px}
  .product-grid{grid-template-columns:1fr}
  .pd-grid{grid-template-columns:1fr}
  .dash-layout{grid-template-columns:1fr}
  .sidebar{display:none}
  .footer-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
}

.loading{display:flex;align-items:center;justify-content:center;padding:40px}
.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}