/* Battery QR - public front-end styles */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",
              "PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:#f4f6fa;
  color:#1f2937;
  min-height:100vh;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{color:#2563eb;text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:720px;margin:0 auto;padding:16px}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 4px;margin-bottom:12px;
}
.brand{font-weight:600;color:#111827;font-size:16px}
.lang{font-size:13px;color:#6b7280}
.lang .lang-label{margin-right:6px}
.lang a{margin:0 4px;color:#6b7280}
.lang a.active{color:#2563eb;font-weight:600}

.card{
  background:#fff;
  border-radius:14px;
  padding:28px 22px;
  box-shadow:0 6px 20px rgba(0,0,0,.06);
}
h1{font-size:22px;margin:0 0 10px;color:#0f172a}
h2{font-size:15px;text-transform:uppercase;letter-spacing:.5px;color:#6b7280;margin:24px 0 8px;border-bottom:1px solid #e5e7eb;padding-bottom:4px}
.intro{color:#4b5563;margin:8px 0 20px;font-size:15px}

form label{display:block;font-weight:600;color:#374151;margin-bottom:6px}
input[type=text]{
  width:100%;
  font-size:18px;
  padding:12px 14px;
  border:1px solid #d1d5db;
  border-radius:10px;
  outline:none;
  transition:border-color .15s, box-shadow .15s;
  letter-spacing:.5px;
}
input[type=text]:focus{border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.15)}

button,input[type=submit]{
  width:100%;
  margin-top:14px;
  font-size:16px;
  font-weight:600;
  background:#2563eb;
  color:#fff;
  border:0;
  border-radius:10px;
  padding:13px;
  cursor:pointer;
  transition:background .15s;
}
button:hover{background:#1d4ed8}
button:disabled{background:#93c5fd;cursor:not-allowed}

.btn-secondary{
  display:inline-block;
  padding:8px 16px;
  border-radius:8px;
  background:#eef2ff;
  color:#3730a3;
  font-size:14px;
}
.btn-secondary:hover{background:#e0e7ff;text-decoration:none}

.alert{
  background:#fef2f2;
  color:#991b1b;
  border:1px solid #fecaca;
  padding:12px 14px;
  border-radius:10px;
  margin-bottom:16px;
  font-size:14px;
}

.batch-pill{
  display:inline-block;
  background:#eff6ff;
  color:#1e40af;
  font-weight:600;
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:10px;
  font-size:14px;
  letter-spacing:.5px;
}

.section{margin-top:10px}
.kv{
  display:flex;
  padding:10px 0;
  border-bottom:1px dashed #e5e7eb;
  font-size:15px;
}
.kv:last-child{border-bottom:0}
.kv .k{flex:0 0 42%;color:#6b7280;padding-right:12px}
.kv .v{flex:1;color:#111827;word-break:break-word}

.note{
  background:#f9fafb;
  padding:10px 12px;
  border-left:3px solid #2563eb;
  border-radius:6px;
  color:#374151;
  margin:10px 0;
  font-size:14px;
}
.recycle-tip{
  display:flex;align-items:center;gap:10px;
  color:#065f46;background:#ecfdf5;
  padding:10px 12px;border-radius:10px;
  font-size:14px;margin:8px 0 4px;
}

footer{text-align:center;padding:24px 0 10px;color:#9ca3af;font-size:12px}
.disclaimer{margin:4px 0}
.copy{margin:4px 0}

@media (max-width:480px){
  .card{padding:18px 14px;border-radius:10px}
  h1{font-size:20px}
  .kv{flex-direction:column}
  .kv .k{flex:0 0 auto;margin-bottom:2px}
}