/* ==========================================================
   滤清器商城 · PC 后台样式
   主色深蓝 #0F3D6E，强调橙红 #FF5A1F
   ========================================================== */
:root {
  --primary: #0F3D6E;
  --primary-light: #1A5A9E;
  --primary-dark: #0A2A4D;
  --primary-bg: #EAF1F8;
  --accent: #FF5A1F;
  --accent-light: #FFF1EA;
  --success: #12A150;
  --warning: #F5A623;
  --danger: #E54B4B;
  --info: #2F7DD1;
  --text-1: #1A1A1A;
  --text-2: #4A4A4A;
  --text-3: #8A8A8A;
  --bg: #F5F7FA;
  --border: #E6EAF0;
  --radius: 10px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  font-size: 14px; color: var(--text-1); background: var(--bg);
}
.mono { font-family: 'SF Mono', Menlo, Consolas, 'Roboto Mono', monospace; }
a { color: inherit; text-decoration: none; }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px; background: var(--primary-dark); color: #fff; flex-shrink: 0;
  display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; overflow-y: auto;
}
.sidebar .brand { padding: 22px 20px; font-size: 17px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar .brand small { display: block; font-size: 12px; font-weight: 400; opacity: .6; margin-top: 4px; }
.nav { padding: 12px 0; flex: 1; }
.nav-group { padding: 14px 20px 6px; font-size: 12px; color: rgba(255,255,255,.45); letter-spacing: 1px; }
.nav a {
  display: block; padding: 11px 20px; font-size: 14px; color: rgba(255,255,255,.8);
  border-left: 3px solid transparent; transition: .15s;
}
.nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav a.on { background: rgba(255,255,255,.1); color: #fff; border-left-color: var(--accent); font-weight: 600; }
.sidebar .foot { padding: 16px 20px; font-size: 12px; color: rgba(255,255,255,.5); border-top: 1px solid rgba(255,255,255,.1); }

.main { margin-left: 220px; flex: 1; min-width: 0; }
.topbar {
  height: 60px; background: #fff; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; padding: 0 24px;
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 { font-size: 18px; font-weight: 700; color: var(--primary-dark); }
.topbar .user { font-size: 13px; color: var(--text-2); display: flex; align-items: center; gap: 14px; }
.content { padding: 24px; }

/* ---------- 卡片 ---------- */
.card { background: #fff; border-radius: var(--radius); padding: 20px; margin-bottom: 20px; box-shadow: 0 1px 4px rgba(15,61,110,.06); }
.card-h { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.card-h h2 { font-size: 15px; font-weight: 700; color: var(--primary-dark); }
.card-h .sub { font-size: 12px; color: var(--text-3); font-weight: 400; margin-left: 8px; }

/* ---------- 统计卡 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat { background: #fff; border-radius: var(--radius); padding: 20px; box-shadow: 0 1px 4px rgba(15,61,110,.06); }
.stat .label { font-size: 13px; color: var(--text-3); }
.stat .value { font-size: 26px; font-weight: 700; color: var(--primary-dark); margin-top: 8px; font-family: 'SF Mono', Menlo, Consolas, monospace; }
.stat .value.accent { color: var(--accent); }
.stat .tip { font-size: 12px; color: var(--text-3); margin-top: 6px; }

/* ---------- 表格 ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 16px; }
.toolbar input, .toolbar select {
  height: 34px; border: 1px solid var(--border); border-radius: 6px; padding: 0 10px; font-size: 13px; outline: none; background: #fff;
}
.toolbar input:focus, .toolbar select:focus { border-color: var(--primary); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 10px 12px; background: var(--primary-bg); color: var(--primary-dark); font-weight: 600; white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:hover td { background: #FAFCFE; }
td .sub { display: block; font-size: 12px; color: var(--text-3); margin-top: 2px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; height: 34px; line-height: 34px; padding: 0 16px; border-radius: 6px;
  font-size: 13px; cursor: pointer; border: 1px solid var(--border); background: #fff; color: var(--text-2);
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-light); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { opacity: .9; color: #fff; }
.btn-danger { color: var(--danger); border-color: #F3C9C9; }
.btn-sm { height: 28px; line-height: 28px; padding: 0 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 标签 ---------- */
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; background: var(--primary-bg); color: var(--primary); }
.tag.ok { background: #E8F7EF; color: var(--success); }
.tag.warn { background: #FFF6E5; color: var(--warning); }
.tag.danger { background: #FFEDED; color: var(--danger); }
.tag.info { background: #EAF3FC; color: var(--info); }
.tag.gray { background: #F0F2F5; color: var(--text-3); }
.platform-wx { background: #E8F5E9; color: #07A854; }
.platform-dy { background: #EFEAFB; color: #6B4DE6; }
.platform-bd { background: #EAF3FC; color: #2F7DD1; }
.platform-h5 { background: #F0F2F5; color: #6B7280; }

/* ---------- 弹窗 ---------- */
.mask { position: fixed; inset: 0; background: rgba(10,20,35,.45); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: #fff; border-radius: 12px; width: 560px; max-width: 92vw; max-height: 88vh; overflow: auto; }
.modal-h { padding: 16px 20px; border-bottom: 1px solid var(--border); font-size: 15px; font-weight: 700; color: var(--primary-dark); display: flex; justify-content: space-between; }
.modal-b { padding: 20px; }
.modal-f { padding: 16px 20px; border-top: 1px solid var(--border); text-align: right; display: flex; gap: 10px; justify-content: flex-end; }
.close { cursor: pointer; color: var(--text-3); font-size: 20px; line-height: 1; }
.form-item { display: flex; align-items: center; margin-bottom: 14px; }
.form-item label { width: 110px; font-size: 13px; color: var(--text-2); text-align: right; padding-right: 12px; }
.form-item input, .form-item select, .form-item textarea {
  flex: 1; height: 34px; border: 1px solid var(--border); border-radius: 6px; padding: 0 10px; font-size: 13px; outline: none;
}
.form-item textarea { height: 70px; padding: 8px 10px; resize: vertical; }
.form-item input:focus, .form-item select:focus, .form-item textarea:focus { border-color: var(--primary); }

/* ---------- 其他 ---------- */
.empty { text-align: center; padding: 60px 20px; color: var(--text-3); font-size: 14px; }
.pager { display: flex; justify-content: flex-end; align-items: center; gap: 10px; margin-top: 16px; font-size: 13px; color: var(--text-2); }
.loading { text-align: center; padding: 40px; color: var(--text-3); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 1200px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* 条形图（纯 CSS，无外部依赖） */
.bars { display: flex; align-items: flex-end; gap: 8px; height: 160px; padding-top: 10px; }
.bar-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.bar { width: 100%; background: linear-gradient(180deg, var(--primary-light), var(--primary)); border-radius: 4px 4px 0 0; min-height: 2px; }
.bar.accent { background: linear-gradient(180deg, #FF8A4C, var(--accent)); }
.bar-label { font-size: 11px; color: var(--text-3); white-space: nowrap; }

/* 登录页 */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)); }
.login-box { width: 380px; background: #fff; border-radius: 16px; padding: 40px; box-shadow: 0 20px 60px rgba(10,42,77,.3); }
.login-box h1 { font-size: 22px; color: var(--primary-dark); margin-bottom: 6px; }
.login-box p { font-size: 13px; color: var(--text-3); margin-bottom: 28px; }
.login-box input { width: 100%; height: 42px; border: 1px solid var(--border); border-radius: 8px; padding: 0 14px; font-size: 14px; margin-bottom: 16px; outline: none; }
.login-box input:focus { border-color: var(--primary); }
.login-box button { width: 100%; height: 44px; background: var(--primary); color: #fff; border: none; border-radius: 8px; font-size: 15px; cursor: pointer; font-weight: 600; }
.login-box .err { color: var(--danger); font-size: 13px; margin-bottom: 12px; min-height: 18px; }
.login-box .hint { margin-top: 20px; font-size: 12px; color: var(--text-3); text-align: center; line-height: 1.8; }

/* Toast */
.toast {
  position: fixed; top: 24px; left: 50%; transform: translateX(-50%);
  background: rgba(20,30,45,.92); color: #fff; padding: 10px 22px; border-radius: 6px; font-size: 14px; z-index: 999;
}