:root{
--primary:#ce171f;--primary-soft:#fff1f2;--dark:#20242c;--muted:#6c757d;--bg:#f4f6f9;--card:#fff;--border:#e9ecef
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:#1f2937}
a{text-decoration:none}
.app-shell{display:flex;min-height:100vh}
.sidebar{width:280px;background:#fff;border-right:1px solid var(--border);padding:24px;display:flex;flex-direction:column;gap:20px}
.sidebar-brand{display:flex;align-items:center;gap:12px}
.brand-dot{width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 6px rgba(206,23,31,.12)}
.sidebar-nav .nav-link{padding:12px 14px;border-radius:12px;color:#374151;font-weight:600}
.sidebar-nav .nav-link.active,.sidebar-nav .nav-link:hover{background:var(--primary-soft);color:var(--primary)}
.sidebar-badges{display:flex;flex-wrap:wrap;gap:8px}
.rep-box{background:#f1f3f5;border-radius:14px;padding:14px;font-size:14px;color:#495057}
.main-area{flex:1;display:flex;flex-direction:column}
.topbar{height:78px;background:#fff;border-bottom:1px solid var(--border);padding:0 24px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:5}
.topbar-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.user-chip{background:#f8f9fa;border:1px solid var(--border);padding:9px 12px;border-radius:10px;font-weight:600}
.content-wrap{padding:24px}
.page-title{font-size:24px;font-weight:700}
.page-subtitle{color:var(--muted)}
.panel-card,.stat-card,.product-card,.login-card{border:none;border-radius:18px;background:var(--card)}
.panel-card{box-shadow:0 10px 30px rgba(0,0,0,.05)}
.stat-card{background:#fff;padding:20px;border-radius:18px;box-shadow:0 10px 30px rgba(0,0,0,.05)}
.stat-card span{display:block;color:var(--muted);font-size:14px;margin-bottom:10px}
.stat-card strong{font-size:28px}
.product-card{overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.05)}
.product-card img{height:220px;object-fit:cover;background:#f8f9fa}
.product-card .card-body{display:flex;flex-direction:column}
.product-card .actions{margin-top:auto}
.default-card{border:1px solid rgba(206,23,31,.25);background:#fff8f8}
.empty-icon{font-size:64px;color:#cfcfcf}
.login-body{background:linear-gradient(135deg,#fff 0%,#fff5f5 100%)}
.login-card{background:#fff;border-radius:22px}
.form-control,.form-select{border-radius:12px;padding:.8rem 1rem}
.btn{border-radius:12px;font-weight:600;padding:.75rem 1rem}
.btn-danger{background:var(--primary);border-color:var(--primary)}
.table > :not(caption) > * > *{padding:1rem .9rem}
.summary-box{background:#fff;border-radius:18px;padding:18px;border:1px solid var(--border)}
.qty-input{max-width:90px}
.badge-soft{background:var(--primary-soft);color:var(--primary)}
@media (max-width: 992px){
.app-shell{flex-direction:column}
.sidebar{width:100%}
.topbar{height:auto;padding:16px;flex-direction:column;align-items:flex-start;gap:12px}
.topbar-right{width:100%}
}