/* =====================================================================
   后台样式
   ===================================================================== */
:root {
  --color-primary: #0F8B5F;
  --color-primary-light: #14A876;
  --color-primary-dark: #0a6b48;
  --color-accent: #E07A3C;
  --color-bg: #F5F7F6;
  --color-card: #ffffff;
  --color-text: #1F2937;
  --color-text-soft: #5b6470;
  --color-text-mute: #8b95a3;
  --color-border: #E5E7EB;
  --color-sidebar: #1a2a23;
  --color-sidebar-soft: #243830;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-light); }
h1, h2, h3, h4 { margin: 0 0 12px; font-weight: 600; }

/* 布局 */
.admin-wrap {
  display: flex;
  min-height: 100vh;
}
.admin-sidebar {
  width: 240px;
  background: var(--color-sidebar);
  color: rgba(255, 255, 255, 0.75);
  flex-shrink: 0;
  position: sticky; top: 0; height: 100vh;
  overflow-y: auto;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 12px;
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.sb-mark {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: 8px;
  display: grid; place-items: center;
  font-family: var(--font-serif);
  font-size: 20px;
}
.sidebar-brand strong { color: #fff; display: block; font-size: 14px; font-family: var(--font-serif); }
.sidebar-brand em { color: rgba(255, 255, 255, 0.5); font-style: normal; font-size: 12px; }
.sidebar-nav { padding: 16px 0; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 20px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: all 150ms;
  border-left: 3px solid transparent;
}
.sidebar-nav a:hover {
  background: var(--color-sidebar-soft);
  color: #fff;
}
.sidebar-nav a.active {
  background: var(--color-sidebar-soft);
  color: #fff;
  border-left-color: var(--color-primary-light);
}
.sidebar-nav a.logout { color: rgba(255, 200, 200, 0.8); }
.sidebar-nav a.logout:hover { background: rgba(255, 100, 100, 0.1); }
.nav-ico {
  display: inline-block;
  width: 22px; text-align: center;
  font-size: 14px;
}
.nav-section {
  padding: 18px 20px 8px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.35);
}

.admin-main {
  flex: 1;
  min-width: 0;
  display: flex; flex-direction: column;
}
.admin-topbar {
  background: #fff;
  height: 60px;
  padding: 0 28px;
  border-bottom: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: space-between;
}
.topbar-title { font-size: 17px; margin: 0; font-family: var(--font-serif); }
.topbar-user { font-size: 13px; color: var(--color-text-soft); }
.topbar-user strong { color: var(--color-text); }
.topbar-user .dot { color: var(--color-text-mute); margin: 0 6px; }
.admin-content { padding: 28px; flex: 1; }

/* 卡片 */
.card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 24px;
  margin-bottom: 20px;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
.card-head h2 { font-size: 16px; margin: 0; }
.card-head .sub { color: var(--color-text-mute); font-size: 12px; margin-top: 4px; }

/* 统计卡 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 20px;
  display: flex; align-items: center; gap: 16px;
  transition: all 200ms;
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: rgba(15, 139, 95, 0.08);
  color: var(--color-primary);
  font-size: 22px;
  flex-shrink: 0;
}
.stat-icon.accent { background: rgba(224, 122, 60, 0.1); color: var(--color-accent); }
.stat-icon.cool   { background: rgba(45, 110, 155, 0.1); color: #2d6e9b; }
.stat-icon.warm   { background: rgba(155, 89, 182, 0.1); color: #9b59b6; }
.stat-value { font-size: 26px; font-weight: 700; line-height: 1.2; }
.stat-label { color: var(--color-text-mute); font-size: 12px; margin-top: 2px; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.table th, .table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
.table th {
  background: #fafbfc;
  font-weight: 500;
  color: var(--color-text-soft);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.table tr:hover td { background: #fafbfc; }
.table .td-cover {
  width: 60px; height: 60px;
  border-radius: 6px;
  object-fit: cover;
  background: #f0ebe0;
}
.table .td-actions { white-space: nowrap; }
.table .td-actions a { margin-right: 8px; }
.table .td-actions a:last-child { margin-right: 0; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  transition: all 150ms;
  font-family: inherit;
}
.btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-accent { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.btn-accent:hover { background: #c56930; color: #fff; }
.btn-danger { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.btn-danger:hover { background: #b91c1c; color: #fff; border-color: #b91c1c; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 14px; }

/* 表单 */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--color-text-soft); font-weight: 500; }
.form-group label .req { color: #b91c1c; }
.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  transition: border-color 150ms, box-shadow 150ms;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 139, 95, 0.12);
}
textarea.form-control { resize: vertical; min-height: 80px; }
.form-help { font-size: 12px; color: var(--color-text-mute); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Alert */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 13px;
}
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

/* 徽章 */
.badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 4px;
  font-weight: 500;
}
.badge-on { background: #dcfce7; color: #166534; }
.badge-off { background: #f3f4f6; color: #6b7280; }

/* 空状态 */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-mute);
}
.empty-icon { font-size: 60px; color: var(--color-border); margin-bottom: 12px; font-family: var(--font-serif); }

/* 工具条 */
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
}
.toolbar .left, .toolbar .right { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.search-input {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 13px;
  width: 240px;
}
.search-input:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 139, 95, 0.12);
}

/* 上传 */
.upload-area {
  display: flex; align-items: center; gap: 16px;
  padding: 16px;
  background: #fafbfc;
  border: 1px dashed var(--color-border);
  border-radius: 8px;
}
.upload-preview {
  width: 120px; height: 90px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: grid; place-items: center;
  color: var(--color-text-mute);
  font-size: 24px;
  flex-shrink: 0;
}
.upload-preview img { width: 100%; height: 100%; object-fit: cover; }

/* 富文本编辑器容器 */
.editor-wrapper {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}
.editor-toolbar { border-bottom: 1px solid var(--color-border); }
.editor-text { min-height: 360px; }

/* 登录页 */
.auth-page {
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(15, 139, 95, 0.92) 0%, rgba(20, 168, 118, 0.92) 100%),
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  display: grid; place-items: center;
  padding: 20px;
  position: relative;
}
.auth-page::before {
  content: '東';
  position: absolute;
  right: 60px; bottom: 60px;
  font-family: var(--font-serif);
  font-size: 360px;
  color: rgba(255, 255, 255, 0.04);
  font-weight: 700;
  line-height: 1;
}
.auth-card {
  background: #fff;
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 1;
}
.auth-brand {
  text-align: center;
  margin-bottom: 28px;
}
.auth-brand .ab-mark {
  width: 56px; height: 56px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  display: grid; place-items: center;
  border-radius: 12px;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
}
.auth-brand h1 { font-size: 20px; margin: 0 0 4px; font-family: var(--font-serif); }
.auth-brand p { color: var(--color-text-mute); font-size: 13px; margin: 0; }
.auth-card .form-group label { font-size: 13px; }
.auth-card .btn { width: 100%; padding: 12px; font-size: 15px; margin-top: 8px; }
.auth-foot {
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-text-mute);
}

/* 响应式 */
@media (max-width: 1024px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .admin-sidebar {
    position: fixed;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 250ms;
  }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-content { padding: 16px; }
  .admin-topbar { padding: 0 16px; }
  .stat-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}