:root {
  --as-blue: #1B3A8C;
  --as-blue-dark: #122a66;
  --as-blue-light: #EEF2FB;
  --as-red: #D62B2B;
  --as-red-light: #FBEAEA;
  --as-white: #FFFFFF;
  --as-gray-50: #F7F8FA;
  --as-gray-200: #E5E7EB;
  --as-gray-600: #4B5563;
  --as-gray-900: #1F2430;
  --as-radius: 14px;
  --as-shadow: 0 2px 10px rgba(27, 58, 140, 0.08);
}

* { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--as-gray-50);
  color: var(--as-gray-900);
  margin: 0;
}

a { color: var(--as-blue); text-decoration: none; }

/* ---------- Layout ---------- */
.as-shell { display: flex; min-height: 100vh; }

.as-sidebar {
  width: 260px;
  background: linear-gradient(180deg, var(--as-blue) 0%, var(--as-blue-dark) 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform .2s ease;
}
.as-sidebar__brand {
  display: flex; align-items: center; gap: 10px;
  padding: 22px 20px; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.as-sidebar__brand img { width: 40px; height: 40px; border-radius: 8px; background: #fff; object-fit: contain; padding: 3px;}
.as-sidebar__brand span { font-weight: 700; font-size: 15px; letter-spacing: .3px; }

.as-nav { list-style: none; padding: 14px 10px; margin: 0; flex: 1; }
.as-nav li a {
  display: flex; align-items: center; gap: 12px;
  color: rgba(255,255,255,0.85); padding: 11px 14px; border-radius: 10px;
  font-size: 14.5px; font-weight: 500; margin-bottom: 2px;
}
.as-nav li a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.as-nav li a.active { background: var(--as-red); color: #fff; }

.as-main { flex: 1; min-width: 0; }

.as-topbar {
  display: flex; align-items: center; justify-content: space-between;
  background: #fff; padding: 14px 26px; border-bottom: 1px solid var(--as-gray-200);
  position: sticky; top: 0; z-index: 10;
}
.as-topbar__title { font-weight: 700; font-size: 18px; }
.as-topbar__user { display: flex; align-items: center; gap: 14px; font-size: 14px; color: var(--as-gray-600); }

.as-content { padding: 26px; }

/* ---------- Cards ---------- */
.as-stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px; margin-bottom: 26px;
}
.as-card {
  background: #fff; border-radius: var(--as-radius); box-shadow: var(--as-shadow);
  padding: 20px; border: 1px solid var(--as-gray-200);
}
.as-card__label { font-size: 13px; color: var(--as-gray-600); font-weight: 600; margin-bottom: 8px; text-transform: uppercase; letter-spacing: .04em;}
.as-card__value { font-size: 26px; font-weight: 800; color: var(--as-gray-900); }
.as-card--blue { background: var(--as-blue-light); }
.as-card--blue .as-card__value { color: var(--as-blue); }
.as-card--red { background: var(--as-red-light); }
.as-card--red .as-card__value { color: var(--as-red); }

.as-panel { background: #fff; border-radius: var(--as-radius); box-shadow: var(--as-shadow); border: 1px solid var(--as-gray-200); padding: 20px; margin-bottom: 22px;}
.as-panel__title { font-weight: 700; font-size: 15px; margin: 0 0 14px; display:flex; align-items:center; gap:8px;}

.as-alert-row { display:flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px solid var(--as-gray-200); font-size: 14px;}
.as-alert-row:last-child { border-bottom: none; }
.as-badge { padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.as-badge--red { background: var(--as-red-light); color: var(--as-red); }
.as-badge--blue { background: var(--as-blue-light); color: var(--as-blue); }

/* ---------- Buttons ---------- */
.as-btn { display: inline-flex; align-items:center; gap:8px; padding: 10px 18px; border-radius: 10px; border: none; font-weight: 600; font-size: 14px; cursor: pointer;}
.as-btn--primary { background: var(--as-blue); color: #fff; }
.as-btn--primary:hover { background: var(--as-blue-dark); }
.as-btn--accent { background: var(--as-red); color: #fff; }

/* ---------- Auth page ---------- */
.as-auth-wrap { min-height: 100vh; display:flex; align-items:center; justify-content:center; background: linear-gradient(135deg, var(--as-blue) 0%, var(--as-blue-dark) 100%); }
.as-auth-card { background: #fff; border-radius: 18px; padding: 40px 36px; width: 100%; max-width: 380px; box-shadow: 0 20px 50px rgba(0,0,0,0.25); text-align: center;}
.as-auth-card img { width: 84px; margin-bottom: 14px; }
.as-auth-card h1 { font-size: 19px; margin: 0 0 4px; color: var(--as-blue); }
.as-auth-card p.tag { font-size: 13px; color: var(--as-gray-600); margin-bottom: 24px; }
.as-field { text-align: left; margin-bottom: 16px; }
.as-field label { display:block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--as-gray-900); }
.as-field input { width: 100%; padding: 11px 13px; border-radius: 10px; border: 1px solid var(--as-gray-200); font-size: 14px; }
.as-field input:focus { outline: none; border-color: var(--as-blue); }
.as-auth-card button { width: 100%; margin-top: 6px; }

.as-flash { padding: 10px 14px; border-radius: 10px; font-size: 13.5px; margin-bottom: 14px; text-align:left; }
.as-flash--danger { background: var(--as-red-light); color: var(--as-red); }
.as-flash--warning { background: #FFF7E6; color: #93650A; }

@media (max-width: 860px) {
  .as-sidebar { position: fixed; z-index: 40; height: 100vh; transform: translateX(-100%); }
  .as-sidebar.open { transform: translateX(0); }
  .as-content { padding: 16px; }
}

/* ---------- Tables ---------- */
.as-table-wrap { background:#fff; border-radius: var(--as-radius); box-shadow: var(--as-shadow); border: 1px solid var(--as-gray-200); overflow: hidden; }
.as-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.as-table th { text-align:left; background: var(--as-gray-50); color: var(--as-gray-600); font-weight: 700; padding: 12px 16px; font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; border-bottom: 1px solid var(--as-gray-200);}
.as-table td { padding: 12px 16px; border-bottom: 1px solid var(--as-gray-200); }
.as-table tr:last-child td { border-bottom: none; }
.as-table tr:hover td { background: var(--as-gray-50); }

.as-toolbar { display:flex; justify-content: space-between; align-items:center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap;}
.as-search { padding: 10px 14px; border-radius: 10px; border: 1px solid var(--as-gray-200); font-size: 14px; width: 280px; }
.as-search:focus { outline:none; border-color: var(--as-blue); }

.as-btn--ghost { background: #fff; border: 1px solid var(--as-gray-200); color: var(--as-gray-900); }
.as-btn--sm { padding: 6px 12px; font-size: 13px; }
.as-btn--outline-red { background:#fff; border: 1px solid var(--as-red); color: var(--as-red); }

.as-form-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 16px; }
.as-form-group label { display:block; font-size: 13px; font-weight:600; margin-bottom:6px;}
.as-form-group input, .as-form-group select, .as-form-group textarea {
  width:100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--as-gray-200); font-size: 14px; font-family: inherit;
}
.as-form-group input:focus, .as-form-group select:focus, .as-form-group textarea:focus { outline:none; border-color: var(--as-blue); }

/* ---------- POS ---------- */
.as-pos-grid { display:grid; grid-template-columns: 1fr 380px; gap: 20px; align-items: start; }
.as-pos-results { max-height: 420px; overflow-y:auto; }
.as-product-row { display:flex; justify-content:space-between; align-items:center; padding: 12px 14px; border-radius: 10px; cursor:pointer; border: 1px solid var(--as-gray-200); margin-bottom:8px; }
.as-product-row:hover { border-color: var(--as-blue); background: var(--as-blue-light); }
.as-product-row .name { font-weight:600; font-size:14px; }
.as-product-row .meta { font-size:12.5px; color: var(--as-gray-600); }
.as-product-row .price { font-weight:700; color: var(--as-blue); }

.as-cart { background:#fff; border-radius: var(--as-radius); box-shadow: var(--as-shadow); border: 2px solid var(--as-blue); padding:18px; position: sticky; top: 90px; }
.as-cart__title { font-weight:800; font-size:15px; margin-bottom:14px; display:flex; align-items:center; gap:8px;}
.as-cart-item { display:flex; justify-content:space-between; align-items:center; padding:10px 0; border-bottom: 1px solid var(--as-gray-200); font-size:13.5px;}
.as-cart-item:last-child { border-bottom:none; }
.as-cart-item input[type=number] { width: 55px; padding:5px; border-radius:6px; border:1px solid var(--as-gray-200); text-align:center;}
.as-cart-total { display:flex; justify-content:space-between; font-weight:800; font-size:18px; padding-top:14px; margin-top:8px; border-top: 2px solid var(--as-gray-200); color: var(--as-blue);}
.as-btn-validate { width:100%; background: var(--as-red); color:#fff; padding:14px; border-radius:12px; font-size:16px; font-weight:800; border:none; margin-top:16px; cursor:pointer;}
.as-btn-validate:hover { background:#b31f1f; }
.as-remove-btn { color: var(--as-red); cursor:pointer; font-weight:700; margin-left:8px;}

@media (max-width: 900px) {
  .as-pos-grid { grid-template-columns: 1fr; }
  .as-cart { position: static; }
}

/* ---------- Receipt ---------- */
.as-receipt { max-width: 640px; margin: 0 auto; background:#fff; padding: 32px; border-radius: 14px; box-shadow: var(--as-shadow); }
.as-receipt__header { display:flex; align-items:center; gap:14px; border-bottom: 2px solid var(--as-blue); padding-bottom:16px; margin-bottom:16px;}
.as-receipt__header img { width:60px; height:60px; object-fit:contain; }
.as-receipt__meta { font-size: 13px; color: var(--as-gray-600); margin-bottom: 18px;}
.as-receipt table { width:100%; border-collapse:collapse; font-size: 13.5px; margin-bottom: 18px;}
.as-receipt th { text-align:left; border-bottom: 2px solid var(--as-gray-200); padding: 8px 4px; font-size:12px; text-transform:uppercase; color: var(--as-gray-600);}
.as-receipt td { padding: 8px 4px; border-bottom: 1px solid var(--as-gray-200); }
.as-receipt__totals { margin-left:auto; width: 260px; }
.as-receipt__totals div { display:flex; justify-content:space-between; padding: 5px 0; font-size:14px;}
.as-receipt__totals .grand { font-weight:800; font-size: 17px; color: var(--as-blue); border-top: 2px solid var(--as-gray-200); padding-top:10px; margin-top:6px;}

@media print {
  .no-print { display:none !important; }
  body { background: #fff; }
  .as-receipt { box-shadow:none; }
}