/* ============================================
   创智天邦 - 后台样式
============================================ */
:root {
  --color-primary: #C8102E;
  --color-primary-dark: #9F0B25;
  --color-primary-light: #FBE9EB;
  --color-text: #1F2937;
  --color-text-2: #6B7280;
  --color-text-3: #9CA3AF;
  --color-line: #E5E7EB;
  --color-bg: #F4F5F7;
  --color-white: #fff;
  --color-success: #16A34A;
  --color-warn: #F59E0B;
  --color-danger: #DC2626;
  --radius: 8px;
  --sidebar-w: 240px;
  --header-h: 60px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--color-bg); color: var(--color-text); font-size: 14px; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { opacity: .85; }

/* ---------- 后台登录页 ---------- */
.login-page { min-height: 100vh; background: linear-gradient(135deg, var(--color-primary) 0%, #5e0817 100%); display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card { background: #fff; border-radius: 16px; padding: 48px 40px; width: 100%; max-width: 400px; box-shadow: 0 20px 60px rgba(0,0,0,.2); }
.login-card h1 { margin: 0 0 8px; font-size: 22px; text-align: center; }
.login-card .sub { text-align: center; color: var(--color-text-2); margin-bottom: 32px; font-size: 13px; }
.login-card .form-group { margin-bottom: 18px; }
.login-card label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--color-text-2); }
.login-card input { width: 100%; padding: 10px 12px; border: 1px solid var(--color-line); border-radius: 6px; font-size: 14px; }
.login-card input:focus { outline: none; border-color: var(--color-primary); }
.login-card button { width: 100%; padding: 12px; background: var(--color-primary); color: #fff; border: none; border-radius: 6px; font-size: 15px; cursor: pointer; }
.login-card button:hover { background: var(--color-primary-dark); }
.login-card .alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 13px; }
.login-card .alert.error { background: #FEE2E2; color: var(--color-danger); }
.login-card .alert.success { background: #DCFCE7; color: var(--color-success); }
.login-card .hint { margin-top: 18px; text-align: center; color: var(--color-text-3); font-size: 12px; }

/* ---------- 后台主框架 ---------- */
.admin-wrap { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w); background: #1a1a1a; color: #d1d5db;
  position: fixed; top: 0; left: 0; bottom: 0; overflow-y: auto;
}
.sidebar-brand {
  height: var(--header-h);
  display: flex; align-items: center; gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  color: #fff;
}
.sidebar-brand .logo-mark {
  width: 32px; height: 32px;
  background: var(--color-primary); color: #fff;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
}
.sidebar-brand .name { font-size: 15px; font-weight: 700; }
.sidebar-brand .role { font-size: 11px; color: var(--color-text-3); }
.sidebar-nav { padding: 12px 0; }
.sidebar-nav .group { padding: 0 16px 6px; font-size: 11px; color: var(--color-text-3); margin-top: 16px; letter-spacing: 1px; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px; font-size: 14px;
  color: #d1d5db;
  border-left: 3px solid transparent;
  transition: all .15s;
}
.sidebar-nav a:hover, .sidebar-nav a.active { background: rgba(255,255,255,.06); color: #fff; border-left-color: var(--color-primary); }
.sidebar-nav a .ic { width: 18px; height: 18px; flex-shrink: 0; }

.admin-main { margin-left: var(--sidebar-w); flex: 1; }
.admin-topbar {
  height: var(--header-h);
  background: #fff;
  border-bottom: 1px solid var(--color-line);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
  position: sticky; top: 0; z-index: 10;
}
.admin-topbar .crumb { color: var(--color-text-2); font-size: 14px; }
.admin-topbar .crumb b { color: var(--color-text); }
.admin-topbar .user { display: flex; align-items: center; gap: 12px; }
.admin-topbar .user .avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--color-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.admin-topbar .user a { color: var(--color-text-2); font-size: 13px; }

.admin-body { padding: 24px; }

/* ---------- 卡片/通用组件 ---------- */
.card { background: #fff; border-radius: 10px; padding: 22px; box-shadow: 0 1px 3px rgba(0,0,0,.04); margin-bottom: 20px; }
.card-h { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--color-line); }
.card-h h2 { margin: 0; font-size: 16px; }
.card-h .desc { color: var(--color-text-3); font-size: 12px; margin-top: 4px; }

.page-h { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 12px; }
.page-h h1 { font-size: 22px; margin: 0; }
.page-h .desc { color: var(--color-text-2); font-size: 13px; margin-top: 4px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  padding: 8px 16px;
  background: var(--color-primary); color: #fff;
  border: 1px solid var(--color-primary); border-radius: 6px;
  font-size: 13px; cursor: pointer;
  transition: all .15s;
}
.btn:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: #fff; }
.btn-outline { background: transparent; color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-ghost { background: transparent; color: var(--color-text-2); border-color: var(--color-line); }
.btn-ghost:hover { background: var(--color-line); color: var(--color-text); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); }
.btn-danger:hover { background: #B91C1C; border-color: #B91C1C; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }

/* 表格 */
.tbl { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; }
.tbl th, .tbl td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--color-line); font-size: 13px; }
.tbl th { background: var(--color-bg); font-weight: 600; color: var(--color-text-2); font-size: 12px; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tr:hover td { background: #fafafa; }
.tbl .row-actions { display: flex; gap: 6px; }
.tbl .row-actions a { color: var(--color-primary); font-size: 12px; }
.tbl .row-actions a.danger { color: var(--color-danger); }

/* Badge 状态 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.badge.on { background: #DCFCE7; color: var(--color-success); }
.badge.off { background: #FEE2E2; color: var(--color-danger); }
.badge.warn { background: #FEF3C7; color: #B45309; }
.badge.info { background: #DBEAFE; color: #1D4ED8; }

/* 表单 */
.form-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.form-row .field { flex: 1; min-width: 200px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--color-text-2); margin-bottom: 6px; }
.field label .req { color: var(--color-primary); }
.field input, .field textarea, .field select {
  width: 100%; padding: 9px 12px; font-size: 14px;
  border: 1px solid var(--color-line); border-radius: 6px;
  background: #fff;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--color-primary); }
.field textarea { min-height: 100px; resize: vertical; }
.field .help { font-size: 12px; color: var(--color-text-3); margin-top: 4px; }

/* 提示条 */
.alert { padding: 12px 18px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: #DCFCE7; color: #166534; border: 1px solid #BBF7D0; }
.alert-error   { background: #FEE2E2; color: #991B1B; border: 1px solid #FECACA; }
.alert-info    { background: #DBEAFE; color: #1E3A8A; border: 1px solid #BFDBFE; }

/* 统计卡片 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 10px; padding: 22px; box-shadow: 0 1px 3px rgba(0,0,0,.04); }
.stat-card .label { font-size: 13px; color: var(--color-text-2); }
.stat-card .val { font-size: 32px; font-weight: 800; color: var(--color-text); margin-top: 8px; }
.stat-card .meta { font-size: 12px; color: var(--color-text-3); margin-top: 6px; }
.stat-card.primary { border-left: 3px solid var(--color-primary); }

/* 工具栏 */
.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.toolbar .left { display: flex; gap: 8px; align-items: center; }
.toolbar .right { display: flex; gap: 8px; align-items: center; }
.toolbar input, .toolbar select {
  padding: 7px 12px; border: 1px solid var(--color-line); border-radius: 6px;
  font-size: 13px; background: #fff;
}

/* 分页 */
.pagination { display: flex; gap: 6px; padding: 16px; align-items: center; justify-content: center; }
.pagination a, .pagination span {
  min-width: 32px; height: 32px; padding: 0 10px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 6px; border: 1px solid var(--color-line);
  font-size: 13px; color: var(--color-text-2); background: #fff;
}
.pagination .active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }

/* 表格内联预览 */
.thumb { width: 50px; height: 50px; border-radius: 6px; background: #f0f0f0; display: inline-block; vertical-align: middle; object-fit: cover; }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform .3s; }
  .sidebar.show { transform: translateX(0); }
  .admin-main { margin-left: 0; }
}

/* 编辑器按钮 */
.editor-toolbar { display: flex; gap: 4px; padding: 6px; background: #f8f9fa; border-radius: 6px 6px 0 0; border: 1px solid var(--color-line); border-bottom: none; }
.editor-toolbar button { padding: 4px 8px; font-size: 12px; background: #fff; border: 1px solid var(--color-line); border-radius: 4px; cursor: pointer; }
.editor-toolbar button:hover { background: var(--color-primary); color: #fff; }
.editor-content { border: 1px solid var(--color-line); border-radius: 0 0 6px 6px; padding: 14px; min-height: 220px; background: #fff; outline: none; }