:root{
  --bg:#ffffff;
  --fg:#0b0b0b;
  --muted:#5a5a5a;
  --panel:#f6f8fa;
  --border:#e2e2e2;
  --good:#0a7a0a;
  --bad:#9a1b1b;
  --unknown:#444;
  --radius:14px;
}

*{box-sizing:border-box;}
body{
  font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  margin:0;background:var(--bg);color:var(--fg);
}
.wrap{max-width:980px;margin:0 auto;padding:16px;}
h1{font-size:1.4rem;margin:8px 0;}
h2{font-size:1.1rem;margin:16px 0 8px;}
.hint{color:var(--muted);font-size:.95rem;}

.panel{
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);padding:14px;
}
.panel + .panel{margin-top:12px;}

.stack{display:grid;gap:12px;}

input[type=file], input[type=text], button{
  width:100%;padding:14px;font-size:1.05rem;border-radius:12px;
}
input[type=text]{border:1px solid var(--border);}
button{cursor:pointer;}
button:disabled{opacity:.6;}

.btn-primary{
  background:#111;color:#fff;border:0;font-size:1.15rem;
  padding:18px;font-weight:700;
}
.btn-secondary{background:#fff;border:1px solid var(--border);font-weight:600;}

.hidden{display:none;}

.history{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;
}

/* chip with per-item X */
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 12px;border-radius:999px;
  border:1px solid var(--border);background:#fff;
  user-select:none;
}
.chip-label{line-height:1;cursor:pointer;}
.chip-del{
  width:26px;height:26px;padding:0;border-radius:999px;
  border:1px solid var(--border);background:var(--panel);
  font-size:1.15rem;line-height:1;cursor:pointer;
}
.chip-del:active{transform:translateY(1px);}

/* scanner layout */
.scan-controls{
  display:flex;gap:10px;margin-top:10px;
}
.scan-controls button{
  width:auto;flex:1;
}

/* video + focus overlay */
.video-wrap{
  position:relative;
  width:100%;
  margin-top:10px;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--border);
  background:#000;
}
#scanVideo{
  width:100%;
  display:block;
}

/* focus box */
.focus-box{
  position:absolute;
  inset:0;
  pointer-events:none;
  display:flex;
  align-items:center;
  justify-content:center;
}
.focus-box .box{
  width:min(60vw, 320px);
  aspect-ratio:1/1;
  border:2px solid rgba(255,255,255,.75);
  border-radius:12px;
  box-shadow:0 0 0 9999px rgba(0,0,0,.20) inset;
  position:relative;
}
.focus-box .corner{
  position:absolute;
  width:28px;height:28px;
  border:4px solid rgba(255,255,255,.95);
}
.focus-box .tl{top:-2px;left:-2px;border-right:0;border-bottom:0;border-radius:10px 0 0 0;}
.focus-box .tr{top:-2px;right:-2px;border-left:0;border-bottom:0;border-radius:0 10px 0 0;}
.focus-box .bl{bottom:-2px;left:-2px;border-right:0;border-top:0;border-radius:0 0 0 10px;}
.focus-box .br{bottom:-2px;right:-2px;border-left:0;border-top:0;border-radius:0 0 10px 0;}

/* working overlay */
#workingOverlay{
  position:fixed;inset:0;z-index:9999;
  display:flex;align-items:center;justify-content:center;
  padding:20px;
  background:rgba(0,0,0,.35);
  backdrop-filter:saturate(130%) blur(2px);
}
#workingOverlay .card{
  width:min(520px, 92vw);
  background:#fff;border:1px solid var(--border);
  border-radius:16px;
  box-shadow:0 18px 60px rgba(0,0,0,.18);
  padding:16px;
  display:flex;gap:12px;align-items:center;
}
.spinner{
  width:22px;height:22px;border-radius:999px;
  border:3px solid #ddd;border-top-color:#111;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
#workTitle{font-weight:800;}
#workSub{color:var(--muted);font-size:.95rem;margin-top:2px;}