/* ===== 进销存管理系统 样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #2f6fed;
  --primary-dark: #1e4fc4;
  --bg: #f3f5f9;
  --card: #fff;
  --border: #e2e6ee;
  --text: #24292f;
  --muted: #6b7280;
  --danger: #d9363e;
  --ok: #16a34a;
  --warn: #d97706;
}
body {
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 190px; flex-shrink: 0; background: #1f2a3d; color: #cbd5e1;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.brand {
  font-size: 16px; font-weight: 700; color: #fff; padding: 18px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav { padding: 10px 8px; display: flex; flex-direction: column; gap: 2px; }
.nav a {
  display: block; padding: 9px 12px; border-radius: 8px; color: #cbd5e1;
  font-size: 14px;
}
.nav a:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }
.nav a.active { background: var(--primary); color: #fff; font-weight: 600; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; min-height: 100vh; }
.topbar {
  background: var(--card); border-bottom: 1px solid var(--border);
  padding: 14px 24px; display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 { font-size: 18px; }
.topbar .user { display: flex; align-items: center; gap: 10px; color: var(--muted); }

.content { padding: 20px 24px 24px; flex: 1 0 auto; }

/* 卡片/面板 */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px 20px; margin-bottom: 18px;
}
.card h2 { font-size: 16px; margin-bottom: 12px; }
.card .row { display: flex; flex-wrap: wrap; gap: 14px 24px; align-items: center; }

/* 表格 */
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--border); border-radius: 12px; }
table.list { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
table.list th {
  background: #f7f8fb; text-align: left; padding: 10px 12px; font-weight: 600;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.list td { padding: 9px 12px; border-bottom: 1px solid #f0f2f7; vertical-align: middle; }
table.list tr:hover td { background: #fafbfe; }
table.list .num { text-align: right; font-variant-numeric: tabular-nums; }
table.list th.num { text-align: right; }

/* 表单 */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px 18px; }
.form-item label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
.form-item input, .form-item select, .form-item textarea {
  width: 100%; padding: 8px 10px; border: 1px solid #d5dbe7; border-radius: 8px;
  font-size: 14px; background: #fff;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(47,111,237,.12);
}
.form-actions { margin-top: 16px; display: flex; gap: 10px; }

/* 按钮 */
.btn {
  display: inline-block; padding: 8px 16px; border-radius: 8px; border: 1px solid transparent;
  background: var(--primary); color: #fff; font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn.outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn.outline:hover { background: #eef3ff; }
.btn.danger { background: var(--danger); }
.btn.danger.outline { background: #fff; color: var(--danger); border-color: var(--danger); }
.btn.danger.outline:hover { background: #fef0f1; }
.btn.gray { background: #f1f3f7; color: #374151; border-color: #d9dee8; }
.btn.sm { padding: 4px 10px; font-size: 13px; border-radius: 6px; }
.btn-sm { padding: 4px 10px; font-size: 13px; border-radius: 6px; }

/* 标签 */
.tag {
  display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px;
  background: #eef2f9; color: #475569;
}
.tag.ok { background: #e6f6ec; color: var(--ok); }
.tag.warn { background: #fef3e2; color: var(--warn); }
.tag.danger { background: #fdecec; color: var(--danger); }

/* 闪存消息 */
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; background: #e6f6ec; color: #14532d; border: 1px solid #bbe7c8; }
.flash.err { background: #fdecec; color: #7f1d1d; border-color: #f3b8bb; }

/* 分页 */
.pager { margin-top: 14px; display: flex; align-items: center; gap: 8px; }
.pager a.pg { padding: 6px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); }
.pager a.pg:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.pager .pg-info { color: var(--muted); font-size: 13px; }

/* 搜索条 */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }
.toolbar input, .toolbar select { padding: 7px 10px; border: 1px solid #d5dbe7; border-radius: 8px; font-size: 14px; }

/* 统计卡片（首页） */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin-bottom: 18px; }
.stat {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px;
}
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 24px; font-weight: 700; margin-top: 6px; }
.stat .sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* 开单明细编辑行 */
.sale-line { display: grid; grid-template-columns: 150px 1fr 90px 90px 100px 100px 100px 40px; gap: 8px; align-items: center; margin-bottom: 8px; }
.sale-line input, .sale-line select { width: 100%; padding: 7px 8px; border: 1px solid #d5dbe7; border-radius: 8px; font-size: 14px; }
.sale-line .amt { text-align: right; font-variant-numeric: tabular-nums; color: var(--text); }

/* 打印按钮 */
.print-bar { margin: 12px 0; }

/* 版权页脚 */
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 10px 16px 18px; flex-shrink: 0; }

@media (max-width: 900px) {
  .sidebar { width: 64px; }
  .brand { font-size: 0; }
  .nav a { text-align: center; padding: 10px 4px; }
  .content { padding: 14px 12px 30px; }
  .sale-line { grid-template-columns: 120px 1fr 80px 80px 90px 90px 90px 36px; }
}