* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "PingFang SC", system-ui, sans-serif; background: #eef1f5; color: #1f2630; }
button { cursor: pointer; border: none; border-radius: 6px; padding: 8px 14px; font-size: 14px; }
input { font-size: 15px; padding: 8px 10px; border: 1px solid #cbd3dd; border-radius: 6px; }
.primary { background: #2f6fed; color: #fff; }
.warn { background: #ff7a18; color: #fff; }
.ghost { background: #fff; border: 1px solid #cbd3dd; }
.danger { background: #fde7e7; color: #c0392b; }

/* login */
.login { max-width: 340px; margin: 12vh auto; background: #fff; padding: 28px; border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,.08); }
.login h1 { font-size: 20px; margin: 0 0 4px; }
.login p { color: #8a96a6; margin: 0 0 20px; font-size: 13px; }
.login input { width: 100%; margin-bottom: 12px; }
.login button { width: 100%; padding: 11px; }

/* pos */
.top { display: flex; align-items: center; gap: 14px; background: #11203a; color: #fff; padding: 10px 16px; }
.top .brand { font-weight: 700; }
.top .grow { flex: 1; }
.badge { padding: 3px 10px; border-radius: 20px; font-size: 12px; }
.badge.on { background: #1f9d55; } .badge.off { background: #c0392b; }
.badge.q { background: #ff7a18; }
.pos { display: grid; grid-template-columns: 1fr 320px; gap: 14px; padding: 14px; }
.card { background: #fff; border-radius: 10px; padding: 14px; }
.scanrow { display: flex; gap: 8px; margin-bottom: 12px; }
.scanrow input { flex: 1; font-size: 18px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid #eef1f5; font-size: 14px; }
th { color: #8a96a6; font-weight: 600; }
td.num, th.num { text-align: right; }
td input { width: 80px; }
.empty { text-align: center; color: #aab4c2; padding: 30px; }
.totals { font-size: 15px; }
.totals .line { display: flex; justify-content: space-between; padding: 6px 0; }
.totals .grand { font-size: 26px; font-weight: 800; padding: 10px 0; border-top: 2px solid #11203a; }
.pay input { width: 100%; margin: 6px 0; }
.checkout { width: 100%; padding: 14px; font-size: 18px; }
.muted { color: #8a96a6; font-size: 12px; }
.stk { font-size: 12px; color: #1f9d55; } .stk.low { color: #c0392b; }