:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e3e6eb;
  --text: #1f2329;
  --muted: #6b7280;
  --primary: #1677ff;
  --primary-hover: #0f66e0;
  --danger: #e53935;
  --ok: #2e7d32;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Roboto, sans-serif;
  font-size: 14px;
}

.topbar {
  background: linear-gradient(135deg, #1677ff, #4096ff);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
}
.topbar h1 { margin: 0; font-size: 18px; font-weight: 600; }
.topbar h1 .sub { font-weight: 400; opacity: .85; margin-left: 6px; }
.topbar .status {
  font-size: 13px;
  background: rgba(255,255,255,.18);
  padding: 4px 10px;
  border-radius: 999px;
}

main {
  max-width: 1200px;
  margin: 16px auto;
  padding: 0 16px 24px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.card h2 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px 14px;
  align-items: end;
}
.grid label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--muted);
  gap: 4px;
}
.grid input {
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.grid input:focus { border-color: var(--primary); }

.captcha-box {
  grid-column: span 2;
  display: flex;
  align-items: center;
  gap: 8px;
}
.captcha-img {
  height: 40px;
  min-width: 130px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafbfc;
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
}
.captcha-img img { height: 40px; width: auto; display: block; }

.actions {
  grid-column: span 4;
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn {
  height: 34px;
  padding: 0 14px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: all .15s;
}
.btn:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn.primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
.btn.ghost { background: transparent; }

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.row h2 { margin: 0; }
.toolbar { display: flex; gap: 8px; }

.split {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 12px;
  min-height: 360px;
}
.pane {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: #fafbfc;
}
.pane-title {
  font-size: 12px;
  color: var(--muted);
  padding: 6px 10px;
  background: #f1f3f6;
  border-bottom: 1px solid var(--border);
}
#barcodes {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  padding: 10px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  background: #fff;
  min-height: 320px;
}

.table-wrap { flex: 1; overflow: auto; background: #fff; }
#resultTable { width: 100%; border-collapse: collapse; font-size: 13px; }
#resultTable th, #resultTable td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
#resultTable th { background: #f6f8fb; position: sticky; top: 0; }
#resultTable tr.err td { color: var(--danger); }
#resultTable tr.zero td { color: var(--muted); }

.footer {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}
#statusText { color: var(--muted); font-size: 13px; min-width: 200px; }
#progress { flex: 1; height: 8px; }

.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  max-width: 360px;
  background: #1f2937;
  color: #fff;
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  font-size: 13px;
  line-height: 1.4;
  transition: opacity .2s, transform .2s;
}
.toast.hidden { opacity: 0; transform: translateY(10px); pointer-events: none; }
.toast.ok { background: var(--ok); }
.toast.err { background: var(--danger); }

@media (max-width: 880px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .captcha-box, .actions { grid-column: span 2; }
  .split { grid-template-columns: 1fr; }
}

/* ============================================
   UA 决定布局(不是 viewport 宽度)
   [data-ua="mobile"]   手机版:全单列、按钮全宽、字号大
   [data-ua="pc"]       PC 版:多列紧凑布局
   ============================================ */

/* PC 端调整(默认就是 PC 布局,这里微调) */
[data-ua="pc"] {
  /* PC 端用紧凑布局,字号偏小 */
  --form-font-size: 13px;
  --btn-padding-y: 7px;
  --btn-padding-x: 14px;
  --input-padding-y: 6px;
}

/* 移动端:大屏上看起来也"是手机版" */
[data-ua="mobile"] {
  --form-font-size: 16px;        /* iOS 16px 阻止缩放 */
  --btn-padding-y: 14px;         /* 大按钮好点 */
  --btn-padding-x: 18px;
  --input-padding-y: 12px;
}

/* ============================================
   手机版特有布局(覆盖默认)
   ============================================ */
[data-ua="mobile"] .topbar {
  flex-wrap: wrap;
  padding: 10px 12px;
  gap: 6px;
}
[data-ua="mobile"] .topbar h1 {
  font-size: 16px;
  flex: 1 0 100%;
  margin-bottom: 4px;
}
[data-ua="mobile"] .topbar .status {
  font-size: 12px;
  padding: 4px 8px;
}

[data-ua="mobile"] .container,
[data-ua="mobile"] main {
  padding: 10px;
  gap: 12px;
}

[data-ua="mobile"] .card {
  padding: 12px;
  border-radius: 8px;
}
[data-ua="mobile"] .card h2 {
  font-size: 15px;
  margin-bottom: 10px;
}

/* 登录表单:全部单列 */
[data-ua="mobile"] .grid {
  grid-template-columns: 1fr !important;
  gap: 10px !important;
}
[data-ua="mobile"] .grid label {
  font-size: var(--form-font-size);
}
[data-ua="mobile"] .grid input,
[data-ua="mobile"] .grid textarea {
  font-size: var(--form-font-size);
  padding: var(--input-padding-y) 10px;
  min-height: 40px;             /* iOS 触摸目标 */
}
[data-ua="mobile"] .captcha-box,
[data-ua="mobile"] .actions {
  grid-column: span 1 !important;
}

/* 验证码框:全宽 */
[data-ua="mobile"] .captcha-box {
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
}
[data-ua="mobile"] .captcha-img {
  height: 56px;
  min-height: 56px;
}
[data-ua="mobile"] .captcha-img img {
  height: 56px;
}

/* 按钮:全宽 + 大 */
[data-ua="mobile"] .btn {
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-size: var(--form-font-size);
  min-height: 44px;             /* Apple HIG 推荐 */
  flex: 1;
}
[data-ua="mobile"] .actions {
  flex-direction: column;
}
[data-ua="mobile"] .actions .btn {
  width: 100%;
}

/* 工具条:全部按钮全宽、垂直堆叠 */
[data-ua="mobile"] .toolbar {
  flex-wrap: wrap;
  gap: 8px;
}
[data-ua="mobile"] .toolbar .btn {
  flex: 1 0 calc(50% - 4px);
  min-width: calc(50% - 4px);
}

/* 双面板:垂直堆叠 */
[data-ua="mobile"] .split {
  grid-template-columns: 1fr !important;
  gap: 12px;
}
[data-ua="mobile"] .pane {
  min-height: 240px;
}

/* 表格:横向滚动,字号略大 */
[data-ua="mobile"] .table-wrap {
  font-size: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
[data-ua="mobile"] table {
  min-width: 600px;
}
[data-ua="mobile"] th,
[data-ua="mobile"] td {
  padding: 10px 8px;
  font-size: 14px;
}

/* 进度条 + 状态文字:全宽换行 */
[data-ua="mobile"] .row {
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
}
[data-ua="mobile"] #progress {
  width: 100%;
}

/* Toast:底部全宽 */
[data-ua="mobile"] .toast {
  right: 10px;
  left: 10px;
  bottom: 10px;
  max-width: none;
  font-size: 14px;
  padding: 14px 16px;
}