:root {
  --primary: #1f6feb;
  --primary-dark: #1857bd;
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2329;
  --text-sub: #6b7280;
  --border: #e5e7eb;
  --danger: #e5484d;
  --ok: #16a34a;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* 顶部栏 */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  height: 50px; padding: 0 12px;
  background: var(--primary); color: #fff;
  font-size: 17px; font-weight: 600;
}
.topbar .back { background: none; border: none; color: #fff; font-size: 28px; width: 36px; text-align: left; cursor: pointer; }
.topbar-spacer { width: 36px; }

main { max-width: 640px; margin: 0 auto; padding: 14px 12px 40px; }

.view { display: none; }
.view.active { display: block; }

/* 首页 */
.hero {
  background: linear-gradient(135deg, #1f6feb, #3b8bff);
  color: #fff; border-radius: var(--radius);
  padding: 26px 20px; margin-bottom: 16px;
}
.hero-title { font-size: 24px; font-weight: 700; }
.hero-sub { font-size: 14px; opacity: .9; margin-top: 4px; }

.menu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.menu-card {
  background: var(--card); border-radius: var(--radius);
  padding: 18px 16px; cursor: pointer;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
  transition: transform .08s ease;
}
.menu-card:active { transform: scale(.97); }
.menu-card.primary { background: linear-gradient(135deg, #1f6feb, #3b8bff); border: none; }
.menu-card.primary .menu-label, .menu-card.primary .menu-desc { color: #fff; }
.menu-icon { font-size: 28px; }
.menu-label { font-size: 16px; font-weight: 600; margin-top: 8px; }
.menu-desc { font-size: 12px; color: var(--text-sub); margin-top: 2px; }

.home-stats { margin-top: 16px; background: var(--card); border-radius: var(--radius); padding: 14px 16px; border: 1px solid var(--border); font-size: 14px; color: var(--text-sub); }

/* 输入条 */
.pan-input-bar, .search-bar {
  display: flex; gap: 8px; margin-bottom: 12px;
}
.search-input {
  flex: 1; height: 44px; padding: 0 14px;
  border: 1px solid var(--border); border-radius: 10px;
  font-size: 16px; background: var(--card); color: var(--text);
}
.search-input:focus { outline: none; border-color: var(--primary); }
.scan-btn {
  flex-shrink: 0; height: 44px; padding: 0 18px;
  background: var(--primary); color: #fff; border: none;
  border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer;
}
.scan-btn:active { background: var(--primary-dark); }

/* 扫码器 */
.scanner-box { margin-bottom: 12px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: #000; }
.reader { width: 100%; min-height: 240px; }
.scan-close { display: block; width: 100%; padding: 10px; background: #333; color: #fff; border: none; font-size: 14px; cursor: pointer; }

/* 批次信息 */
.pan-meta {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 14px; margin-bottom: 12px; font-size: 13px;
}
.pan-summary { color: var(--primary); font-weight: 600; }

.section-title {
  font-size: 14px; color: var(--text-sub); font-weight: 600;
  margin: 16px 0 8px; display: flex; align-items: center; justify-content: space-between;
}
.link-btn { background: none; border: none; color: var(--primary); font-size: 13px; cursor: pointer; }

/* 列表 */
.item-list { list-style: none; }
.item-list li {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 14px; margin-bottom: 8px;
  display: flex; align-items: center; gap: 10px;
}
.item-info { flex: 1; min-width: 0; }
.item-name { font-weight: 600; font-size: 15px; }
.item-meta { font-size: 12px; color: var(--text-sub); margin-top: 2px; }
.item-qty { font-size: 18px; font-weight: 700; color: var(--primary); white-space: nowrap; }
.item-actions { display: flex; gap: 6px; }
.item-actions button {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 4px 9px; font-size: 13px; cursor: pointer; color: var(--text);
}
.item-actions .del { color: var(--danger); }

.empty { text-align: center; color: var(--text-sub); padding: 40px 0; font-size: 14px; }

/* 报告页 */
.report-head { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; margin-bottom: 12px; }
.report-head .rt-title { font-size: 17px; font-weight: 700; }
.report-head .rt-meta { font-size: 12px; color: var(--text-sub); margin-top: 4px; }
.report-summary { display: flex; gap: 12px; margin-bottom: 12px; }
.report-summary .stat { flex: 1; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px; text-align: center; }
.report-summary .stat .num { font-size: 22px; font-weight: 700; color: var(--primary); }
.report-summary .stat .lbl { font-size: 12px; color: var(--text-sub); margin-top: 2px; }
.report-actions { margin-bottom: 4px; }

/* 按钮 */
.btn-primary {
  display: inline-block; width: 100%; height: 44px;
  background: var(--primary); color: #fff; border: none;
  border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer;
}
.btn-primary:active { background: var(--primary-dark); }
.btn-ghost {
  flex: 1; height: 44px; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; font-size: 15px; cursor: pointer;
}

/* 模态框 */
.modal-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.45); display: flex; align-items: flex-end; justify-content: center;
}
.modal {
  width: 100%; max-width: 640px; background: var(--card);
  border-radius: 18px 18px 0 0; padding: 20px 18px; padding-bottom: calc(20px + env(safe-area-inset-bottom));
  max-height: 88vh; overflow-y: auto;
}
.modal-title { font-size: 18px; font-weight: 700; margin-bottom: 14px; }
.modal-brief { font-size: 13px; color: var(--text-sub); background: var(--bg); border-radius: 8px; padding: 8px 12px; margin-bottom: 12px; }
.field { display: block; margin-bottom: 12px; }
.field span { display: block; font-size: 13px; color: var(--text-sub); margin-bottom: 6px; }
.field em { color: var(--danger); font-style: normal; }
.field input {
  width: 100%; height: 42px; padding: 0 12px;
  border: 1px solid var(--border); border-radius: 10px; font-size: 16px;
}
.field input:focus { outline: none; border-color: var(--primary); }
.field-row { display: flex; gap: 10px; }
.field-row .field { flex: 1; }
.modal-actions { display: flex; gap: 10px; margin-top: 18px; }

/* 选择器 */
.picker-item {
  display: flex; flex-direction: column; align-items: flex-start;
  width: 100%; padding: 13px 14px; margin-bottom: 8px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  font-size: 15px; font-weight: 600; color: var(--text); cursor: pointer; text-align: left;
}
.picker-item span { font-size: 12px; color: var(--text-sub); font-weight: 400; margin-top: 2px; }
.picker-item:active { border-color: var(--primary); }

/* 提示 */
.toast {
  position: fixed; left: 50%; bottom: 80px; transform: translateX(-50%);
  background: rgba(0,0,0,.8); color: #fff; padding: 10px 18px;
  border-radius: 20px; font-size: 14px; z-index: 200; max-width: 80%;
}