/* ============================================================
   导航站后台样式
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --primary: #5b7cfa;
  --primary-2: #7c5cfa;
  --danger: #ef4444;
  --ok: #16a34a;
  --text: #1f2430;
  --text-2: #677086;
  --text-3: #98a0b3;
  --border: #e4e8f1;
  --bg: #f4f6fb;
  --card: #ffffff;
  --side-bg: #101623;
  --side-text: #aab3c7;
  --side-active: #ffffff;
  --radius: 10px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------- 布局 ---------- */
.admin-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 224px;
  flex: none;
  background: var(--side-bg);
  color: var(--side-text);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.side-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.side-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 4px 12px rgba(91, 124, 250, .4);
}
.side-brand strong { display: block; color: #fff; font-size: 14px; line-height: 1.3; }
.side-brand small { font-size: 11px; color: var(--side-text); }

.side-nav { flex: 1; padding: 14px 10px; display: flex; flex-direction: column; gap: 3px; }
.side-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--side-text);
  transition: background .18s, color .18s;
}
.side-link:hover { background: rgba(255, 255, 255, .06); color: #fff; }
.side-link.is-active {
  background: linear-gradient(135deg, rgba(91, 124, 250, .28), rgba(124, 92, 250, .24));
  color: var(--side-active);
  font-weight: 600;
}
.side-ico { width: 20px; text-align: center; font-size: 15px; }

.side-foot { padding: 14px 10px; border-top: 1px solid rgba(255, 255, 255, .07); display: flex; flex-direction: column; gap: 3px; }
.side-user { font-size: 11px; color: #56607a; padding: 8px 12px 0; }

/* ---------- 主区 ---------- */
.main { flex: 1; min-width: 0; padding: 24px 28px 48px; }

.main-head { margin-bottom: 20px; }
.main-head h1 { font-size: 21px; font-weight: 700; letter-spacing: -.3px; }

.alert {
  padding: 11px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 18px;
}
.alert-success { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.alert-danger  { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-info    { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }

/* ---------- 卡片与表格 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h3 { font-size: 15px; margin-bottom: 14px; }

.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 13.5px; font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all .18s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 12px rgba(91, 124, 250, .3);
}
.btn-primary:hover { color: #fff; filter: brightness(1.06); }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); background: #fef2f2; }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }

.input, select.input {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  outline: none;
  background: #fff;
  color: var(--text);
  transition: border-color .18s, box-shadow .18s;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(91, 124, 250, .12); }
.input-sm { padding: 7px 10px; font-size: 13px; }

.table-wrap { overflow-x: auto; }
table.list {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
table.list th, table.list td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.list th {
  font-size: 12px; color: var(--text-3); font-weight: 600;
  white-space: nowrap;
}
table.list tbody tr:hover { background: #fafbfe; }
table.list .link-cell { display: flex; align-items: center; gap: 10px; min-width: 200px; }
table.list .link-cell .ic {
  width: 34px; height: 34px; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 17px;
  background: var(--bg);
  border-radius: 8px;
}
table.list .link-cell .t { font-weight: 600; }
table.list .link-cell .d { font-size: 12px; color: var(--text-3); }
.tag-list { display: flex; flex-wrap: wrap; gap: 4px; max-width: 220px; }
.tag-list span { font-size: 11px; background: var(--bg); border-radius: 5px; padding: 2px 7px; color: var(--text-2); }
.badge {
  font-size: 11px; font-weight: 600; border-radius: 6px; padding: 2px 8px;
  white-space: nowrap;
}
.badge-on { background: #ecfdf5; color: #047857; }
.badge-off { background: #f3f4f6; color: #6b7280; }
.badge-hot { background: #fff7ed; color: #c2410c; }
.row-actions { display: flex; gap: 6px; white-space: nowrap; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-item label {
  display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px;
}
.form-item label .req { color: var(--danger); margin-left: 2px; }
.form-item input, .form-item select, .form-item textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
  outline: none;
  background: #fff;
  color: var(--text);
  font-family: inherit;
  transition: border-color .18s, box-shadow .18s;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(91, 124, 250, .12);
}
.form-item textarea { min-height: 72px; resize: vertical; }
.form-item .hint { font-size: 12px; color: var(--text-3); margin-top: 5px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2); }
.checkbox-row input { width: 16px; height: 16px; accent-color: var(--primary); }

.form-actions { display: flex; gap: 10px; margin-top: 22px; }

/* ---------- 仪表盘统计 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.stat .num { font-size: 26px; font-weight: 800; letter-spacing: -.5px; }
.stat .lbl { font-size: 12.5px; color: var(--text-3); margin-top: 2px; }
.stat .num.c1 { color: var(--primary); }
.stat .num.c2 { color: var(--primary-2); }
.stat .num.c3 { color: #f59e0b; }
.stat .num.c4 { color: #10b981; }

.mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.mini-list li {
  list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 9px 2px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}
.mini-list li:last-child { border-bottom: none; }
.mini-list .meta { color: var(--text-3); font-size: 12px; flex: none; }
.mini-list a:hover { color: var(--primary); }

/* ---------- 分页 ---------- */
.pagination { display: flex; gap: 6px; margin-top: 16px; }
.pagination a, .pagination span {
  min-width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  background: var(--card);
}
.pagination .cur { background: var(--primary); color: #fff; border-color: transparent; }
.pagination a:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .admin-shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .side-brand { border-bottom: none; padding: 12px 16px; }
  .side-nav { flex-direction: row; padding: 6px 10px; overflow-x: auto; }
  .side-foot { display: none; }
  .main { padding: 18px 14px 40px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .mini-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}