/* ============ 基础 ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #4f6df5;
  --primary-dark: #3b55d9;
  --danger: #e5484d;
  --ok: #30a46c;
  --warn: #f5a524;
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1c2024;
  --muted: #8b8f98;
  --border: #e6e8ee;
  --radius: 10px;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); font-size: 13px; }
.center { text-align: center; }

/* ============ 导航 ============ */
.navbar { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-size: 20px; font-weight: 700; color: var(--text); }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 14px; }
.nav-links a { color: var(--text); }
.nav-links .admin-link { color: var(--danger); font-weight: 600; }
.nav-user { display: flex; align-items: center; gap: 6px; color: var(--muted); }

/* ============ 按钮 / 徽章 ============ */
.btn {
  display: inline-block; background: var(--primary); color: #fff !important; border: none;
  padding: 8px 20px; border-radius: 8px; font-size: 14px; cursor: pointer; transition: .15s;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-sm { padding: 4px 12px; font-size: 13px; }
.btn-block { display: block; width: 100%; text-align: center; margin-top: 12px; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #c93a3f; }
.btn-ghost { background: transparent; color: var(--muted) !important; border: 1px solid var(--border); }
.btn-lock { background: #8b8f98; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 12px; }
.badge-ok { background: #e6f6ee; color: var(--ok); }
.badge-wait { background: #fdf3e0; color: #b87700; }
.badge-no { background: #fdecec; color: var(--danger); }
.badge-member { background: #eef0fe; color: var(--primary); }

/* ============ 提示 ============ */
.flash { margin: 14px 0 0; padding: 10px 16px; border-radius: var(--radius); font-size: 14px; }
.flash-success { background: #e6f6ee; color: var(--ok); }
.flash-error { background: #fdecec; color: var(--danger); }
.flash-warning { background: #fdf3e0; color: #b87700; }

/* ============ 公告 ============ */
.announcement {
  margin: 16px 0 0; padding: 10px 16px; background: #eef0fe; color: var(--primary);
  border: 1px solid #d8defc; border-radius: var(--radius); font-size: 14px;
}

/* ============ 首页 ============ */
.hero { text-align: center; padding: 48px 0 28px; }
.hero h1 { font-size: 32px; margin-bottom: 6px; }
.hero p { color: var(--muted); margin-bottom: 20px; }
.search-bar { display: flex; gap: 8px; max-width: 520px; margin: 0 auto; }
.search-bar input {
  flex: 1; padding: 10px 16px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; outline: none;
}
.search-bar input:focus { border-color: var(--primary); }
.cat-chips { margin-top: 16px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.chip {
  padding: 4px 14px; border-radius: 20px; background: var(--card);
  border: 1px solid var(--border); color: var(--text); font-size: 13px;
}
.chip.active, .chip:hover { background: var(--primary); color: #fff; border-color: var(--primary); text-decoration: none; }

.layout { display: grid; grid-template-columns: 1fr 260px; gap: 24px; padding-bottom: 40px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: block; color: var(--text); transition: .15s;
}
.card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); text-decoration: none; transform: translateY(-2px); }
.card-cat {
  display: inline-block; font-size: 12px; color: var(--primary);
  background: #eef0fe; padding: 2px 8px; border-radius: 4px; margin-bottom: 8px;
}
.card h3 { font-size: 16px; margin-bottom: 6px; }
.card-summary {
  font-size: 13px; color: var(--muted); margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-meta { display: flex; gap: 12px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }

.panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.panel h4 { margin-bottom: 12px; }
.hot-item { display: flex; gap: 8px; padding: 6px 0; font-size: 13px; color: var(--text); border-bottom: 1px dashed var(--border); }
.hot-item:last-child { border-bottom: none; }
.hot-rank { color: var(--warn); font-weight: 700; }

.empty { text-align: center; padding: 60px 0; color: var(--muted); }
.empty h2 { font-size: 48px; color: var(--border); }

/* ============ 表单 ============ */
.auth-box {
  max-width: 380px; margin: 60px auto; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 32px;
}
.auth-box h2 { margin-bottom: 20px; text-align: center; }
.auth-box label, .tutorial-form label { display: block; font-size: 13px; margin: 14px 0 4px; color: var(--muted); }
.auth-box input, .tutorial-form input, .tutorial-form select, .tutorial-form textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; outline: none; background: #fff;
}
.auth-box input:focus, .tutorial-form input:focus, .tutorial-form textarea:focus { border-color: var(--primary); }
.form-page { max-width: 760px; margin: 32px auto; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.form-actions { margin-top: 20px; display: flex; gap: 10px; }

/* ============ 详情页 ============ */
.detail { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; margin: 24px 0 40px; }
.status-banner { padding: 12px 16px; border-radius: 8px; margin-bottom: 20px; font-size: 14px; }
.banner-pending { background: #fdf3e0; color: #b87700; }
.banner-rejected { background: #fdecec; color: var(--danger); }
.detail-head h1 { font-size: 26px; margin: 8px 0 10px; }
.owner-actions { margin-top: 12px; display: flex; gap: 8px; }
.detail-content { margin: 28px 0; white-space: pre-wrap; word-break: break-word; font-size: 15px; }
/* 富文本正文排版 */
.rich-content { white-space: normal; }
.rich-content img { max-width: 100%; height: auto; border-radius: 6px; }
.rich-content table { border-collapse: collapse; margin: 12px 0; width: 100%; }
.rich-content th, .rich-content td { border: 1px solid var(--border); padding: 8px 12px; font-size: 14px; }
.rich-content th { background: #fafbfe; }
.rich-content pre { background: #f6f7fb; border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; overflow-x: auto; }
.rich-content code { font-family: Consolas, "Courier New", monospace; font-size: 13px; }
.rich-content blockquote { border-left: 4px solid var(--primary); margin: 12px 0; padding: 4px 16px; color: var(--muted); background: #fafbfe; }
.rich-content h1, .rich-content h2, .rich-content h3, .rich-content h4, .rich-content h5 { margin: 18px 0 8px; }

/* 富文本编辑器容器 */
.editor-wrap { border: 1px solid var(--border); border-radius: 8px; margin-top: 4px; }
#editor-toolbar { border-bottom: 1px solid var(--border); }
#editor-content { min-height: 320px; }
#editor-content .w-e-text-container [data-slate-editor] { min-height: 320px; }
.resources { border-top: 1px solid var(--border); padding-top: 20px; }
.resources h3 { margin-bottom: 12px; }
.res-list { list-style: none; }
.res-list li {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 8px; margin-bottom: 8px; flex-wrap: wrap;
}
.res-name { font-weight: 500; word-break: break-all; }
.upload-form { margin-top: 16px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ============ 表格 / 页面头 ============ */
.page-head { display: flex; justify-content: space-between; align-items: center; margin: 24px 0 16px; }
.table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); margin-bottom: 24px; }
.table th, .table td { padding: 10px 14px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--border); }
.table th { background: #fafbfe; color: var(--muted); font-weight: 600; font-size: 13px; }
.table .actions { display: flex; gap: 6px; }
.inline-form { display: flex; gap: 6px; align-items: center; }
.inline-form select { padding: 4px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; }

/* ============ 会员 ============ */
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; margin-top: 24px; }
.plan-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; position: relative; }
.plan-best { border-color: var(--primary); box-shadow: 0 4px 16px rgba(79,109,245,.15); }
.plan-tag { position: absolute; top: -11px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 12px; padding: 2px 12px; border-radius: 20px; }
.plan-price { font-size: 32px; font-weight: 700; color: var(--primary); margin: 10px 0; }
.plan-price span { font-size: 13px; color: var(--muted); font-weight: 400; margin-left: 4px; }
.plan-card ul { list-style: none; font-size: 13px; color: var(--muted); }
.plan-card li { padding: 4px 0; }
.plan-card li::before { content: "✓ "; color: var(--ok); }

/* ============ 后台 ============ */
.admin-nav { display: flex; gap: 4px; margin: 24px 0 16px; border-bottom: 1px solid var(--border); }
.admin-nav a { padding: 8px 16px; color: var(--muted); border-bottom: 2px solid transparent; font-size: 14px; }
.admin-nav a.active, .admin-nav a:hover { color: var(--primary); border-bottom-color: var(--primary); text-decoration: none; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin: 20px 0; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-align: center; }
.stat-num { font-size: 32px; font-weight: 700; color: var(--primary); }
.stat-num.warn { color: var(--warn); }

/* ============ 页脚 ============ */
.footer { border-top: 1px solid var(--border); padding: 24px 0; text-align: center; color: var(--muted); font-size: 13px; background: var(--card); }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .nav-links { gap: 10px; font-size: 13px; }
}