:root{
  --green:#1b7f5a; --green-d:#15664897; --green-dd:#0f4f38;
  --ink:#1d1d1b; --muted:#6b6b66; --line:#e5e4df; --bg:#f5f5f2;
  --card:#fff; --danger:#b3352e; --danger-bg:#fbeceb;
  --radius:12px; --shadow:0 1px 2px rgba(0,0,0,.05),0 1px 3px rgba(0,0,0,.04);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.5;font-size:16px}
a{color:var(--green);text-decoration:none}
h1{font-size:22px;font-weight:600}
h2{font-size:18px;font-weight:600}

/* Topbar */
.topbar{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;
  display:flex;align-items:center;gap:12px;padding:10px 16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);font-size:17px}
.brand-logo{height:24px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{padding:8px 12px;border-radius:8px;color:var(--ink);font-size:15px}
.nav a.active{background:#eaf4ef;color:var(--green-dd)}
.nav a:hover{background:#f0f0ec}
.logout-form{margin-left:6px}
.link-btn{background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;
  font:inherit;font-size:14px;color:var(--muted);cursor:pointer}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;cursor:pointer;padding:8px;margin-left:auto}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px}

/* Layout */
.container{max-width:960px;margin:0 auto;padding:20px 16px 60px}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.head-actions{display:flex;gap:8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px;margin-bottom:16px}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.muted{color:var(--muted)}
.strong{font-weight:600}
.link{color:var(--green);font-size:14px}
.count-badge{font-size:14px;font-weight:500;color:var(--muted);background:#eef0ec;padding:2px 10px;border-radius:20px;vertical-align:middle}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  font:inherit;font-size:15px;padding:10px 16px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;transition:.12s;white-space:nowrap}
.btn:hover{background:#f4f4f0}
.btn-primary{background:var(--green);border-color:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dd)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-danger{background:#fff;border-color:#e6b7b3;color:var(--danger)}
.btn-danger:hover{background:var(--danger-bg)}
.btn-sm{padding:6px 10px;font-size:13px;border-radius:8px}
.btn-block{width:100%}

/* Alerts */
.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px;font-size:15px}
.alert-success{background:#e9f5ee;color:#12603f;border:1px solid #bfe3ce}
.alert-error{background:var(--danger-bg);color:#8f2a24;border:1px solid #e6b7b3}

/* Stats */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}
.stat{display:flex;flex-direction:column;gap:4px;text-align:center;padding:20px 12px;margin:0}
.stat-num{font-size:26px;font-weight:700;color:var(--green-dd)}
.stat-label{font-size:13px;color:var(--muted)}

/* Tables */
.table-wrap{overflow-x:auto;margin:0 -16px}
.table{width:100%;border-collapse:collapse;font-size:15px}
.table th,.table td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
.table th{font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);font-weight:600}
.table tbody tr:last-child td{border-bottom:0}
.table .num{text-align:right;white-space:nowrap}
.table .actions-col{text-align:right}
.row-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.inline{display:inline}
.pill{display:inline-block;font-size:11px;background:#eef0ec;color:#555;padding:2px 8px;border-radius:12px;margin-left:4px}

/* Filters */
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.filters input[type=search]{flex:1;min-width:180px}
.filters select{min-width:150px}

/* Forms */
.form .field{display:block;margin-bottom:16px}
.field>span{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field-row{display:flex;gap:12px;flex-wrap:wrap}
.field-row .field{flex:1;min-width:160px}
input,select,textarea{width:100%;font:inherit;font-size:16px;padding:11px 12px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid #bfe3ce;border-color:var(--green)}
.req{color:var(--danger)}
.hint{display:block;font-size:13px;color:var(--muted);margin-top:5px;font-style:normal}
.err{display:block;font-size:13px;color:var(--danger);margin-top:5px;font-style:normal}
.price-input{position:relative;display:flex;align-items:center}
.price-input input{padding-right:60px}
.price-suffix{position:absolute;right:12px;color:var(--muted);font-size:14px}
.form-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.barcode-box{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin-bottom:16px;background:#fafaf8}
.barcode-box summary{cursor:pointer;font-weight:600;font-size:14px}
.barcode-box .field{margin-top:12px;margin-bottom:4px}
.fieldset{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:16px}
.fieldset legend{font-size:13px;font-weight:600;color:var(--muted);padding:0 6px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;margin-bottom:16px;cursor:pointer}
.check input{width:auto;margin-top:3px}
.add-cat{display:flex;gap:8px;flex-wrap:wrap}
.add-cat input{flex:1;min-width:200px}

/* Login */
.login-wrap{min-height:80vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{width:100%;max-width:360px;text-align:center}
.login-title{margin-bottom:2px}
.login-sub{color:var(--muted);margin-bottom:20px;font-size:14px}
.login-card .field{text-align:left}

/* Pager */
.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:8px}
.pager-info{font-size:14px;color:var(--muted)}
.empty{text-align:center;padding:32px}
.empty p{color:var(--muted);margin-bottom:14px}

@media (max-width:640px){
  .nav{display:none;order:3;width:100%;flex-direction:column;align-items:stretch}
  body.nav-open .nav{display:flex}
  .nav-toggle{display:flex}
  .stat-grid{grid-template-columns:1fr 1fr}
  .stat-num{font-size:22px}
  h1{font-size:20px}
}