/**
 * 物料系统 — 淡绿主题 PWA 样式
 * 底部 7 tab 导航，大按钮零打字
 */
:root {
  --primary: #2e7d32;
  --primary-light: #e8f5e9;
  --primary-dark: #1b5e20;
  --danger: #d32f2f;
  --success: #2e7d32;
  --warning: #f57c00;
  --gray: #9e9e9e;
  --gray-light: #f5f5f5;
  --bg: #f0f7f0;
  --text: #212121;
  --text-light: #757575;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, 'PingFang SC', 'Noto Sans SC', sans-serif;
  font-size: 22px;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  padding-bottom: 84px;
}
.hidden { display: none !important; }

.page { padding: 12px; max-width: 820px; margin: 0 auto; }
.page-title { font-size: 28px; font-weight: 700; text-align: center; padding: 12px 0; color: var(--primary); }
.page-sub { font-size: 16px; color: var(--text-light); text-align: center; margin-bottom: 12px; }

/* ─── 顶部栏 ─── */
.topbar {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}
.topbar .title { font-size: 22px; font-weight: 700; }
.topbar .user { font-size: 15px; opacity: 0.9; }
.topbar button { background: rgba(255,255,255,0.2); color: #fff; border: 0; border-radius: 8px; padding: 6px 12px; font-size: 16px; }

/* ─── KPI 卡片 ─── */
.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 12px 0; }
.kpi-card { background: #fff; border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.kpi-card .label { font-size: 15px; color: var(--text-light); }
.kpi-card .value { font-size: 30px; font-weight: 700; color: var(--primary); margin-top: 4px; }
.kpi-card .sub { font-size: 14px; color: var(--text-light); }
.kpi-card.warn .value { color: var(--warning); }

/* ─── 卡片块 ─── */
.card { background: #fff; border-radius: var(--radius); padding: 14px; margin: 10px 0; box-shadow: var(--shadow); }
.card h3 { font-size: 18px; color: var(--primary-dark); margin-bottom: 8px; border-bottom: 2px solid var(--primary-light); padding-bottom: 6px; }

/* ─── 表单 ─── */
.field { margin: 10px 0; }
.field label { display: block; font-size: 16px; color: var(--text-light); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px; font-size: 20px; border: 2px solid #ddd; border-radius: 10px; background: #fff;
}
.field input:focus, .field select:focus { border-color: var(--primary); outline: none; }

/* ─── 选择芯片 ─── */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 10px 16px; border-radius: 20px; background: #fff; border: 2px solid #ddd;
  font-size: 18px; cursor: pointer; user-select: none;
}
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.chip.disabled { opacity: 0.4; }

/* ─── 按钮 ─── */
.btn {
  display: block; width: 100%; padding: 16px; font-size: 22px; font-weight: 600;
  border: 0; border-radius: 12px; background: var(--primary); color: #fff; cursor: pointer; margin: 10px 0;
}
.btn:active { transform: scale(0.98); }
.btn.secondary { background: #fff; color: var(--primary); border: 2px solid var(--primary); }
.btn.danger { background: var(--danger); }
.btn.warn { background: var(--warning); }
.btn:disabled { background: var(--gray); }

/* ─── 表格 ─── */
.tbl { width: 100%; border-collapse: collapse; font-size: 16px; }
.tbl th, .tbl td { padding: 8px 6px; text-align: center; border-bottom: 1px solid #eee; }
.tbl th { background: var(--primary-light); color: var(--primary-dark); font-weight: 600; }
.tbl tr.row-warn { background: #fff3e0; }

/* ─── 列表项 ─── */
.list-item { background: #fff; border-radius: 10px; padding: 12px; margin: 8px 0; box-shadow: var(--shadow); display: flex; justify-content: space-between; align-items: center; }
.list-item .meta { font-size: 14px; color: var(--text-light); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 10px; font-size: 14px; }
.badge.pending { background: #fff3e0; color: var(--warning); }
.badge.confirmed, .badge.approved { background: #e8f5e9; color: var(--success); }
.badge.rejected { background: #ffebee; color: var(--danger); }
.badge.issue { background: #fff3e0; color: var(--warning); }

/* ─── 底部导航 ─── */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; background: #fff; border-top: 1px solid #ddd;
  display: flex; z-index: 100; max-width: 820px; margin: 0 auto;
}
.bottom-nav .nav-item {
  flex: 1; padding: 8px 2px; text-align: center; font-size: 12px; color: var(--text-light); cursor: pointer; border: 0; background: none;
}
.bottom-nav .nav-item .icon { font-size: 22px; display: block; }
.bottom-nav .nav-item.active { color: var(--primary); font-weight: 700; }

/* ─── 弹窗 ─── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 200; padding: 16px;
}
.modal-box { background: #fff; border-radius: 16px; padding: 20px; max-width: 500px; width: 100%; max-height: 85vh; overflow-y: auto; }
.modal-title { font-size: 22px; font-weight: 700; margin-bottom: 12px; color: var(--primary); }
.modal-detail { font-size: 16px; color: var(--text); margin-bottom: 16px; line-height: 1.6; }
.modal-actions { display: flex; gap: 10px; }
.modal-actions .btn { margin: 0; }

/* ─── 登录页 ─── */
.login-box { max-width: 360px; margin: 60px auto; background: #fff; border-radius: 16px; padding: 28px; box-shadow: var(--shadow); }
.login-box h1 { text-align: center; color: var(--primary); font-size: 28px; margin-bottom: 20px; }

/* ─── 提示 ─── */
.toast { position: fixed; top: 60px; left: 50%; transform: translateX(-50%); background: #333; color: #fff; padding: 12px 20px; border-radius: 8px; z-index: 300; font-size: 16px; }
.toast.error { background: var(--danger); }
.toast.ok { background: var(--success); }

.sig-canvas { border: 2px solid #ddd; border-radius: 8px; background: #fff; width: 100%; touch-action: none; }
.divider { height: 1px; background: #eee; margin: 12px 0; }
.link-btn { background: none; border: 0; color: var(--primary); font-size: 16px; text-decoration: underline; cursor: pointer; }

/* ─── v2 新增：row-2 / grid-2 / tbl ─── */
.row-2 { display: flex; gap: 10px; margin: 8px 0; }
.row-2 .btn { flex: 1; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th, .tbl td { border: 1px solid #e5ede5; padding: 7px 8px; text-align: center; }
.tbl th { background: #eef4ee; color: var(--primary); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { background: #eef4ee; border: 2px solid #d0e0d0; border-radius: 20px; padding: 9px 14px; font-size: 14px; cursor: pointer; font-weight: 600; }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }