:root {
  --primary: #2E7D32;
  --primary-dark: #1B5E20;
  --accent: #F57C00;
  --bg: #f4f7f4;
  --card: #fff;
  --text: #2c3e50;
  --muted: #8a97a5;
  --border: #e0e8e0;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }

/* 登录页 */
.login-wrap {
  max-width: 360px;
  margin: 12vh auto;
  background: var(--card);
  padding: 40px 32px;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}
.login-wrap h1 { font-size: 22px; text-align: center; color: var(--primary); margin-bottom: 6px; }
.login-wrap .sub { text-align: center; color: var(--muted); margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; color: var(--muted); }
.form-group input {
  width: 100%; padding: 11px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; outline: none;
}
.form-group input:focus { border-color: var(--primary); }
.btn { display: inline-block; padding: 10px 18px; border: none; border-radius: 8px;
  background: var(--primary); color: #fff; cursor: pointer; font-size: 14px;
}
.btn:hover { background: var(--primary-dark); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-ghost { background: #eef1f5; color: var(--text); }
.btn-danger { background: #e74c3c; }
.msg { margin-top: 14px; text-align: center; color: #e74c3c; min-height: 18px; }

/* 后台布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 200px; background: #1a2e23; color: #fff; padding: 20px 0; flex-shrink: 0;
}
.sidebar .brand { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 16px 0 20px; }
.sidebar .brand .brand-logo { width: 64px; height: 64px; object-fit: contain; border-radius: 8px; }
.sidebar .brand span { font-size: 18px; font-weight: bold; color: #fff; }
.sidebar .nav-item {
  padding: 13px 24px; cursor: pointer; color: #c3ccd6; border-left: 3px solid transparent;
}
.sidebar .nav-item:hover { background: #243b2e; color: #fff; }
.sidebar .nav-item.active { background: #243b2e; color: #fff; border-left-color: var(--primary); }
.sidebar .nav-item.logout { margin-top: 20px; color: #8a97a5; }

/* 侧栏手风琴分组 */
.acc-menu { margin-top: 10px; }
.acc-group { border-bottom: 1px solid rgba(255,255,255,0.06); }
.acc-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 22px; cursor: pointer; color: #d6dde6; font-size: 14px; font-weight: 600; user-select: none;
}
.acc-head:hover { color: #fff; }
.acc-head .chev {
  width: 7px; height: 7px; border-right: 2px solid #8a97a5; border-bottom: 2px solid #8a97a5;
  transform: rotate(45deg); transition: transform .2s ease; margin-right: 4px;
}
.acc-group.open .acc-head .chev { transform: rotate(-135deg); }
.acc-body { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.acc-group.open .acc-body { max-height: 360px; }
.acc-body .nav-item { padding-left: 40px; font-weight: 400; }
.acc-body .nav-item.active { border-left-color: var(--primary); }

.main { flex: 1; padding: 24px 32px; overflow: auto; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.topbar h2 { font-size: 20px; }
.section { background: var(--card); border-radius: 10px; padding: 22px; margin-bottom: 22px; box-shadow: 0 2px 10px rgba(0,0,0,0.04); display: none; }
.section.active { display: block; }
.section h3 { margin-bottom: 16px; font-size: 16px; }

/* 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #fafbfc; color: var(--muted); font-weight: 600; }
tr:hover td { background: #fafbfc; }
.tag { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px; background: #eef1f5; color: #667; }
.tag.ok { background: #e8f5e9; color: #2E7D32; }
.tag.warn { background: #fff3e0; color: #E65100; }

/* 表单/筛选 */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
.toolbar input, .toolbar select {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px;
}
.toolbar .grow { flex: 1; min-width: 120px; }
.pager { margin-top: 14px; text-align: right; color: var(--muted); }
.stat-cards { display: flex; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.stat-card { flex: 1; min-width: 150px; background: var(--card); border-radius: 10px; padding: 18px; box-shadow: 0 2px 10px rgba(0,0,0,0.04); }
.stat-card .num { font-size: 26px; font-weight: bold; color: var(--primary); }
.stat-card .lbl { color: var(--muted); margin-top: 4px; }
.empty { color: var(--muted); padding: 20px 0; text-align: center; }
.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: none; align-items: center; justify-content: center; z-index: 50; }
.modal-mask.show { display: flex; }
.modal { background: #fff; border-radius: 12px; padding: 26px; width: 420px; max-width: 92vw; }
.modal h3 { margin-bottom: 16px; }
.modal .form-group input { width: 100%; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 10px; }
.upload-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.upload-row input[type=file] { flex: 1; min-width: 170px; }
.tip { font-size: 12px; color: var(--muted); }

/* 品牌设置 */
.color-row { display: flex; align-items: center; gap: 10px; }
.color-row input[type=color] { width: 48px; height: 36px; padding: 0; border: 1px solid var(--border); border-radius: 8px; background: #fff; cursor: pointer; }
.color-row .hex { flex: 1; max-width: 220px; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }
.theme-preview { display: flex; align-items: center; gap: 12px; margin: 14px 0 18px; padding: 14px; background: #fafbfc; border: 1px solid var(--border); border-radius: 10px; }
.tp-chip { color: #fff; font-size: 12px; padding: 6px 12px; border-radius: 6px; }
.tp-btn { border: none; background: linear-gradient(135deg, var(--a), #ff9800); color: #fff; padding: 8px 16px; border-radius: 8px; cursor: default; font-size: 13px; }
.alert { background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412; padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; line-height: 1.6; }
.switch { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); cursor: pointer; }
.switch input { width: 16px; height: 16px; }