:root{
  --bg:#0f0a1e;
  --bg-2:#1a1030;
  --card:#1e1438;
  --card-2:#241a44;
  --border:#33285c;
  --primary:#4c1d95;
  --primary-2:#2e1065;
  --accent:#7c3aed;
  --accent-2:#a855f7;
  --text:#ede9fe;
  --text-muted:#a897d1;
  --success:#22c55e;
  --warning:#f59e0b;
  --danger:#ef4444;
  --radius:14px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  background:linear-gradient(160deg,var(--bg),var(--bg-2));
  color:var(--text);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}

/* ---------- Layout ---------- */
.app-shell{display:flex;min-height:100vh}
.sidebar{
  width:260px;flex-shrink:0;
  background:linear-gradient(180deg,var(--primary-2),#160a33);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:20px 14px;position:sticky;top:0;height:100vh;
}
.sidebar .brand{display:flex;align-items:center;gap:12px;padding:6px 8px 20px}
.sidebar .brand img{width:44px;height:44px;border-radius:10px;object-fit:cover}
.sidebar .brand h1{font-size:18px;font-weight:700}
.sidebar .brand span{font-size:11px;color:var(--text-muted);display:block}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:8px;flex:1}
.nav a{
  display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:10px;color:var(--text-muted);
  font-size:14px;font-weight:500;transition:.15s;
}
.nav a:hover{background:rgba(124,58,237,.15);color:var(--text)}
.nav a.active{background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff;box-shadow:var(--shadow)}
.nav a svg{width:18px;height:18px;flex-shrink:0}
.sidebar-footer{border-top:1px solid var(--border);padding-top:14px;margin-top:10px;display:flex;flex-direction:column;gap:10px}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;border-bottom:1px solid var(--border);background:rgba(15,10,30,.6);backdrop-filter:blur(8px);position:sticky;top:0;z-index:20}
.content{padding:28px;max-width:1400px;width:100%;margin:0 auto}
.page-title{font-size:24px;font-weight:700;margin-bottom:4px}
.page-sub{color:var(--text-muted);font-size:14px;margin-bottom:24px}

/* ---------- Cards / grid ---------- */
.grid{display:grid;gap:18px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(150deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stat-card .label{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:8px}
.stat-card .value{font-size:26px;font-weight:700;margin-top:8px}
.stat-card .hint{font-size:12px;color:var(--text-muted);margin-top:4px}
.stat-card .icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent),var(--primary));margin-bottom:10px}
.stat-card .icon svg{width:20px;height:20px;color:#fff}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{background:var(--card-2);text-align:left;padding:12px 14px;font-weight:600;color:var(--text-muted);white-space:nowrap}
tbody td{padding:12px 14px;border-top:1px solid var(--border)}
tbody tr:hover{background:rgba(124,58,237,.08)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:10px;border:1px solid transparent;font-size:14px;font-weight:600;transition:.15s}
.btn svg{width:16px;height:16px}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff}
.btn-primary:hover{filter:brightness(1.1)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{background:rgba(124,58,237,.12)}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:6px 10px;font-size:13px}

/* ---------- Forms ---------- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13px;color:var(--text-muted)}
input,select,textarea{
  background:var(--bg-2);border:1px solid var(--border);border-radius:10px;
  padding:10px 12px;color:var(--text);font-size:14px;width:100%;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
select option{background:var(--bg-2);color:var(--text)}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge-success{background:rgba(34,197,94,.15);color:#4ade80}
.badge-warning{background:rgba(245,158,11,.15);color:#fbbf24}
.badge-danger{background:rgba(239,68,68,.15);color:#f87171}
.badge-info{background:rgba(59,130,246,.15);color:#60a5fa}
.badge-muted{background:rgba(168,151,209,.12);color:var(--text-muted)}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:8px;margin-bottom:20px;border-bottom:1px solid var(--border)}
.tab{padding:10px 16px;color:var(--text-muted);font-weight:600;font-size:14px;border-bottom:2px solid transparent;cursor:pointer}
.tab.active{color:var(--text);border-bottom-color:var(--accent)}

/* ---------- Modal ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-overlay.open{display:flex}
.modal{background:linear-gradient(150deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);padding:24px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow)}
.modal h3{font-size:19px;margin-bottom:18px}
.modal-lg{max-width:820px}

/* ---------- Misc ---------- */
.lang-switch{display:flex;gap:6px;align-items:center}
.lang-switch button{background:transparent;border:1px solid var(--border);border-radius:8px;padding:5px 8px;font-size:16px;line-height:1;opacity:.55}
.lang-switch button.active{opacity:1;border-color:var(--accent);background:rgba(124,58,237,.15)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.row.between{justify-content:space-between}
.mt{margin-top:18px}.mb{margin-bottom:18px}
.text-muted{color:var(--text-muted)}
.text-success{color:#4ade80}.text-danger{color:#f87171}.text-warning{color:#fbbf24}
.text-right{text-align:right}.text-center{text-align:center}
.toast{position:fixed;bottom:24px;right:24px;background:var(--card-2);border:1px solid var(--border);border-left:4px solid var(--accent);padding:14px 18px;border-radius:10px;box-shadow:var(--shadow);z-index:200;font-size:14px;opacity:0;transform:translateY(10px);transition:.25s}
.toast.show{opacity:1;transform:translateY(0)}
.toast.error{border-left-color:var(--danger)}
.toast.success{border-left-color:var(--success)}
.empty{text-align:center;color:var(--text-muted);padding:40px 20px}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:40px auto}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Login ---------- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.auth-card{background:linear-gradient(150deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:20px;padding:38px;width:100%;max-width:420px;box-shadow:var(--shadow)}
.auth-card .logo{display:flex;flex-direction:column;align-items:center;gap:12px;margin-bottom:26px}
.auth-card .logo img{width:72px;height:72px;border-radius:16px;object-fit:cover}
.auth-card h2{font-size:22px;text-align:center}
.auth-card .sub{color:var(--text-muted);font-size:13px;text-align:center;margin-top:4px}
.link-btn{background:none;border:none;color:var(--accent-2);font-size:14px;text-align:center;width:100%;margin-top:16px}

/* ---------- Storefront ---------- */
.shop-header{background:linear-gradient(135deg,var(--primary-2),var(--primary));padding:22px 28px;display:flex;align-items:center;justify-content:space-between}
.shop-header .brand{display:flex;align-items:center;gap:12px}
.shop-header img{width:46px;height:46px;border-radius:10px;object-fit:cover}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.product-card{background:linear-gradient(150deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:10px}
.product-card .price{font-size:20px;font-weight:700;color:var(--accent-2)}
.cart-float{position:fixed;bottom:24px;right:24px;z-index:50}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .grid.cols-3{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .sidebar{position:fixed;left:-280px;z-index:80;transition:.25s;box-shadow:var(--shadow)}
  .sidebar.open{left:0}
  .menu-toggle{display:inline-flex!important}
  .grid.cols-4,.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}
  .content{padding:18px}
}
.menu-toggle{display:none;background:transparent;border:1px solid var(--border);border-radius:8px;padding:8px;color:var(--text)}
/* Loja */
.store-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.store-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;display:flex;flex-direction:column;justify-content:space-between;gap:12px}
.store-card .sc-price{font-size:18px;font-weight:700;color:var(--accent);margin-top:6px}

/* Fatura */
#invoiceArea{display:none}
.invoice{color:#111;background:#fff;max-width:800px;margin:0 auto;padding:32px;font-size:14px}
.invoice h1{font-size:24px;margin:0;color:#4c1d95}
.invoice h2{font-size:18px;margin:0}
.invoice .muted{color:#666;font-size:12px}
.inv-head{display:flex;justify-content:space-between;align-items:flex-start;border-bottom:2px solid #4c1d95;padding-bottom:16px;margin-bottom:16px}
.inv-cli{margin-bottom:16px;line-height:1.7}
.inv-table{width:100%;border-collapse:collapse;margin-bottom:16px}
.inv-table th,.inv-table td{border-bottom:1px solid #ddd;padding:8px}
.inv-table th{text-align:left;background:#f5f3ff}
.inv-tot{margin-left:auto;width:280px}
.inv-tot div{display:flex;justify-content:space-between;padding:4px 0}
.inv-foot{text-align:center;color:#4c1d95;margin-top:24px;font-weight:600}
@media print{
  .sidebar,.topbar,.no-print{display:none!important}
  body{background:#fff;color:#000}
  .content{padding:0}
  body.printing .content > *:not(#invoiceArea){display:none!important}
  body.printing #invoiceArea{display:block!important}
}