*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,sans-serif;color:#222;background:#fafafa}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.site-header{background:#111;color:#fff}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.logo img{height:48px}
.logo{display:flex;align-items:center;color:#fff;text-decoration:none;font-weight:700;font-size:18px}
.admin-link{color:#9bdcff}
.top-badges{display:flex;gap:16px;justify-content:center;background:#222;color:#fff;padding:8px 0}
.banner .banner-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;padding:16px 0}
.banner-item img{width:100%;height:180px;object-fit:cover;border-radius:8px}
.banner-placeholder{background:#eee;border:1px dashed #bbb;border-radius:8px;padding:40px;text-align:center;color:#666;width:100%}
.grid{display:grid;gap:16px}
.categories{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.category-card{display:block;background:#fff;border:1px solid #eee;border-radius:8px;padding:16px;text-align:center;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .05s}
.category-card:hover{box-shadow:0 4px 18px rgba(0,0,0,.08)}
.category-card:active{transform:translateY(1px)}
.products{grid-template-columns:repeat(auto-fill,minmax(220px,240px));justify-content:flex-start}
.product-card{background:#fff;border:1px solid #eee;border-radius:8px;overflow:hidden}
.product-card img{width:100%;height:140px;object-fit:cover}
.product-info{padding:10px}
.product-name{font-weight:600;margin-bottom:6px;font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-price{display:flex;gap:8px;align-items:center;margin-bottom:6px}
.product-price .old{text-decoration:line-through;color:#888}
.product-price .price{color:#0a7a28;font-weight:700}
.product-desc{display:none}
.site-footer{margin-top:32px;background:#111;color:#fff;padding:20px 0}

/* Admin Premium */
.admin-layout{display:flex;min-height:100vh;background:#f8fafc}
.admin-sidebar{width:280px;background:linear-gradient(180deg,#1e293b 0%,#334155 100%);color:#fff;box-shadow:4px 0 20px rgba(0,0,0,.1);position:fixed;height:100vh;overflow-y:auto}
.admin-main{flex:1;margin-left:280px;background:#f8fafc;min-height:100vh}
.admin-header{background:#fff;border-bottom:1px solid #e2e8f0;padding:20px 30px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.admin-nav{display:flex;align-items:center;justify-content:space-between}
.admin-nav .user-info{display:flex;align-items:center;gap:12px}
.admin-nav .user-avatar{width:40px;height:40px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;color:#fff}
.admin-nav .user-details h3{margin:0;font-size:16px;color:#1e293b}
.admin-nav .user-details small{color:#64748b;font-size:14px}
.admin-nav .logout-btn{background:#ef4444;color:#fff;border:none;padding:8px 16px;border-radius:8px;cursor:pointer;font-weight:500;transition:background .2s}
.admin-nav .logout-btn:hover{background:#dc2626}

.sidebar-header{padding:24px;border-bottom:1px solid #475569}
.sidebar-header h1{font-size:20px;font-weight:700;margin:0;background:linear-gradient(135deg,#60a5fa 0%,#a78bfa 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.sidebar-nav{padding:16px 0}
.sidebar-nav .nav-section{margin-bottom:24px}
.sidebar-nav .nav-section h3{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:#94a3b8;margin:0 0 12px 24px;font-weight:600}
.sidebar-nav .nav-item{display:flex;align-items:center;gap:12px;padding:12px 24px;color:#cbd5e1;text-decoration:none;transition:all .2s;border-left:3px solid transparent}
.sidebar-nav .nav-item:hover{background:#475569;color:#fff;border-left-color:#60a5fa}
.sidebar-nav .nav-item.active{background:#475569;color:#fff;border-left-color:#60a5fa}
.sidebar-nav .nav-item i{font-size:18px;width:20px;text-align:center}

.admin-content{padding:30px;max-width:1200px}
.admin-content h1{font-size:28px;font-weight:700;color:#1e293b;margin:0 0 24px 0}
.admin-content h2{font-size:22px;font-weight:600;color:#334155;margin:24px 0 16px 0}

/* Cards e Stats */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px}
.stat-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 1px 3px rgba(0,0,0,.05);border:1px solid #e2e8f0;transition:transform .2s,box-shadow .2s}
.stat-card:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.1)}
.stat-card .stat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:24px}
.stat-card .stat-icon.products{background:linear-gradient(135deg,#10b981 0%,#059669 100%);color:#fff}
.stat-card .stat-icon.categories{background:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);color:#fff}
.stat-card .stat-icon.banners{background:linear-gradient(135deg,#8b5cf6 0%,#7c3aed 100%);color:#fff}
.stat-card .stat-number{font-size:32px;font-weight:700;color:#1e293b;margin-bottom:8px}
.stat-card .stat-label{color:#64748b;font-size:14px;font-weight:500}

/* Forms Premium */
.form-container{background:#fff;border-radius:12px;padding:30px;box-shadow:0 1px 3px rgba(0,0,0,.05);border:1px solid #e2e8f0;margin-bottom:30px}
.form{display:grid;gap:20px}
.form .form-group{display:grid;gap:8px}
.form label{font-weight:600;color:#374151;font-size:14px}
.form input,.form select,.form textarea{padding:12px 16px;border:1px solid #d1d5db;border-radius:8px;font:inherit;font-size:14px;transition:border-color .2s,box-shadow .2s}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px rgba(59,130,246,.1)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form button{padding:14px 24px;background:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;transition:transform .2s,box-shadow .2s}
.form button:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,.3)}

/* Tables Premium */
.table-container{background:#fff;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.05);border:1px solid #e2e8f0;overflow:hidden}
.table{width:100%;border-collapse:collapse}
.table th{background:#f8fafc;padding:16px;text-align:left;font-weight:600;color:#374151;font-size:14px;border-bottom:1px solid #e2e8f0}
.table td{padding:16px;border-bottom:1px solid #f1f5f9;color:#374151}
.table tbody tr:hover{background:#f8fafc}
.table tbody tr:last-child td{border-bottom:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:6px;font-weight:500;font-size:14px;text-decoration:none;transition:all .2s;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,.3)}
.btn-secondary{background:#f3f4f6;color:#374151;border:1px solid #d1d5db}
.btn-secondary:hover{background:#e5e7eb}
.btn-danger{background:#ef4444;color:#fff}
.btn-danger:hover{background:#dc2626}

/* Badges */
.badge-success{background:#d1fae5;color:#065f46;padding:4px 8px;border-radius:6px;font-size:12px;font-weight:600}
.badge-error{background:#fee2e2;color:#991b1b;padding:4px 8px;border-radius:6px;font-size:12px;font-weight:600}

/* Code blocks */
code{background:#f1f5f9;color:#475569;padding:2px 6px;border-radius:4px;font-family:monospace;font-size:13px}

/* Alerts */
.alert{padding:16px;border-radius:8px;margin-bottom:20px;font-weight:500}
.alert.success{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0}
.alert.error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}

/* Auth */
.auth-container{max-width:420px;margin:50px auto;background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.1);padding:40px;border:1px solid #e2e8f0}
.auth-container h1{text-align:center;margin-bottom:30px;color:#1e293b}

/* Responsive */
@media (max-width:768px){
  .admin-sidebar{transform:translateX(-100%);transition:transform .3s}
  .admin-sidebar.open{transform:translateX(0)}
  .admin-main{margin-left:0}
  .form .row{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
}