:root{
  --blue:#0874bd;
  --blue-dark:#075b99;
  --bg:#f3f8fc;
  --text:#152033;
  --muted:#6f7d8c;
  --border:#d9e4ed;
  --green:#168455;
  --red:#c53a47;
  --warning:#b7791f;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}
button,input,textarea{font:inherit}
button{cursor:pointer}
.page{min-height:100vh;padding:18px}
.container{max-width:720px;margin:0 auto}
.header{
  padding:32px 28px;
  border-radius:24px 24px 0 0;
  color:#fff;
  background:linear-gradient(135deg,#0a65ad,#108bc9);
  text-align:center
}
.header h1{margin:0;font-size:42px;letter-spacing:6px}
.header p{margin:12px 0 0;line-height:1.55;font-size:16px}
.card{
  background:#fff;
  padding:28px;
  border-radius:0 0 24px 24px;
  box-shadow:0 15px 45px rgba(27,67,99,.08)
}
.tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;background:#eaf2f8;padding:6px;border-radius:14px;margin-bottom:26px}
.tab-button{border:0;border-radius:10px;padding:13px;background:transparent;color:#9aaabd;font-weight:700}
.tab-button.active{background:var(--blue);color:#fff}
.field{margin-bottom:18px}
.field label{display:block;margin-bottom:8px;font-weight:700}
.required{color:var(--red)}
.input-action{display:grid;grid-template-columns:minmax(0,1fr) 118px;gap:10px}
input,textarea{
  width:100%;border:1px solid var(--border);border-radius:12px;
  padding:14px 15px;background:#fff;outline:none
}
input:focus,textarea:focus{border-color:#58a8da;box-shadow:0 0 0 3px rgba(8,116,189,.10)}
textarea{min-height:92px;resize:vertical}
.scan-button,.primary-button,.success-button{
  border:0;border-radius:12px;font-weight:800
}
.scan-button{background:var(--blue);color:#fff;padding:0 10px}
.primary-button,.success-button{width:100%;padding:15px;color:#fff;font-size:16px}
.primary-button{background:linear-gradient(90deg,#0868ad,#0c90c9)}
.success-button{background:linear-gradient(90deg,#128253,#1ca96d)}
.qr-badge{
  display:inline-flex;margin-top:8px;padding:6px 10px;border-radius:999px;
  background:#e8f7ef;color:var(--green);font-size:12px;font-weight:800
}
.hidden{display:none!important}
.result{display:none;margin-top:16px;padding:15px;border-radius:12px;line-height:1.55}
.result.show{display:block}
.result.success{background:#eaf8f1;color:#126846;border:1px solid #bee9d3}
.result.error{background:#fff0f1;color:#a52c37;border:1px solid #f2c6ca}
.result.warning{background:#fff8e7;color:#8d6516;border:1px solid #f2dda5}
.product-info-title{font-weight:900;margin-bottom:8px}
.product-row{display:flex;justify-content:space-between;gap:20px;padding:8px 0;border-bottom:1px solid rgba(0,0,0,.06)}
.product-label{color:var(--muted)}
.product-value{font-weight:700;text-align:right;word-break:break-word}
#customerSection{margin-top:24px;padding-top:22px;border-top:1px solid var(--border)}
.success-section{text-align:center}
.success-icon{width:70px;height:70px;margin:0 auto 14px;border-radius:50%;display:grid;place-items:center;background:#e8f7ef;color:var(--green);font-size:42px;font-weight:900}
.footer{text-align:center;color:#748292;padding:20px 8px;font-size:13px}

.scanner-modal{
  position:fixed;inset:0;z-index:99999;display:none;flex-direction:column;
  background:#000;color:#fff
}
.scanner-modal.show{display:flex}
.scanner-top{
  min-height:58px;display:flex;align-items:center;justify-content:space-between;
  padding:max(10px,env(safe-area-inset-top)) 14px 10px;background:rgba(0,0,0,.84);z-index:5
}
.scanner-close{width:40px;height:40px;border:0;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:25px}
.scanner-stage{position:relative;flex:1;min-height:320px;overflow:hidden;background:#000}
#reader{position:absolute;inset:0;width:100%;height:100%}
#reader video{width:100%!important;height:100%!important;object-fit:cover!important}
#reader>div{border:0!important}
.scanner-status{
  position:absolute;top:16px;left:50%;transform:translateX(-50%);z-index:4;
  max-width:calc(100% - 30px);padding:8px 13px;border-radius:999px;
  background:rgba(0,0,0,.7);font-size:12px;text-align:center
}
.scan-frame{
  pointer-events:none;position:absolute;left:50%;top:50%;width:min(76vw,330px);
  height:min(76vw,330px);transform:translate(-50%,-50%);z-index:3;
  border-radius:22px;box-shadow:0 0 0 9999px rgba(0,0,0,.30)
}
.corner{position:absolute;width:46px;height:46px;border-color:#12e18a;border-style:solid}
.corner.tl{left:0;top:0;border-width:4px 0 0 4px;border-radius:18px 0 0 0}
.corner.tr{right:0;top:0;border-width:4px 4px 0 0;border-radius:0 18px 0 0 0}
.corner.bl{left:0;bottom:0;border-width:0 0 4px 4px;border-radius:0 0 0 18px}
.corner.br{right:0;bottom:0;border-width:0 4px 4px 0;border-radius:0 0 18px 0}
.scan-line{
  position:absolute;left:7%;right:7%;height:2px;top:12%;
  background:linear-gradient(90deg,transparent,#12e18a,transparent);
  box-shadow:0 0 14px #12e18a;animation:scanline 1.55s linear infinite alternate
}
@keyframes scanline{from{top:12%}to{top:88%}}
.scanner-hint{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:4;
  text-align:center;font-size:14px;line-height:1.45;text-shadow:0 1px 3px #000
}
.scanner-tools{
  display:grid;grid-template-columns:repeat(3,1fr);gap:9px;
  padding:12px 12px calc(12px + env(safe-area-inset-bottom));background:#0b1015;z-index:5
}
.scanner-tools button{
  min-height:48px;border:1px solid rgba(255,255,255,.16);border-radius:13px;
  background:rgba(255,255,255,.08);color:#fff;font-weight:700
}
.scanner-tools button.active{background:#0878ba;border-color:#0878ba}
.scanner-tools button:disabled{opacity:.38}

@media(max-width:560px){
  .page{padding:0}
  .container{max-width:none}
  .header{border-radius:0;padding:25px 16px}
  .header h1{font-size:34px}
  .card{border-radius:0;padding:20px 16px;min-height:calc(100vh - 210px)}
  .input-action{grid-template-columns:minmax(0,1fr) 108px}
  .scan-button{font-size:13px}
  .product-row{align-items:flex-start}
}