/* CloudForum · 设计系统
   风格：现代玻璃拟态 + 柔和渐变 + 圆润卡片，深浅色双主题 */

:root {
  color-scheme: light;

  --brand-50: #eef2ff;
  --brand-100: #e0e7ff;
  --brand-200: #c7d2fe;
  --brand-400: #818cf8;
  --brand-500: #6366f1;
  --brand-600: #4f46e5;
  --brand-700: #4338ca;

  --accent-400: #22d3ee;
  --accent-500: #06b6d4;

  --ok-500: #10b981;
  --warn-500: #f59e0b;
  --danger-500: #ef4444;
  --danger-600: #dc2626;

  --bg: #f6f7fb;
  --bg-elev: rgba(255, 255, 255, 0.78);
  --bg-solid: #ffffff;
  --bg-subtle: rgba(15, 23, 42, 0.03);
  --bg-hover: rgba(15, 23, 42, 0.05);

  --text: #0f172a;
  --text-soft: #475569;
  --text-mute: #7c8798;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.14);

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 16px -4px rgba(15, 23, 42, 0.12), 0 2px 6px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 24px 60px -20px rgba(15, 23, 42, 0.28), 0 8px 20px -8px rgba(15, 23, 42, 0.12);

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-full: 999px;

  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 68px;
  --max-w: 1180px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --brand-50: #1e1b4b;
  --brand-100: #272357;
  --brand-200: #3730a3;
  --brand-400: #818cf8;
  --brand-500: #818cf8;
  --brand-600: #6366f1;
  --brand-700: #a5b4fc;

  --bg: #080b14;
  --bg-elev: rgba(20, 26, 42, 0.72);
  --bg-solid: #131a2b;
  --bg-subtle: rgba(255, 255, 255, 0.035);
  --bg-hover: rgba(255, 255, 255, 0.06);

  --text: #eef2fa;
  --text-soft: #b3bed3;
  --text-mute: #8895ad;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 32px 80px -24px rgba(0, 0, 0, 0.8), 0 8px 24px -8px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

/* 行内 SVG 的默认尺寸，避免图标撑破文字行 */
svg { width: 1.15em; height: 1.15em; flex: none; vertical-align: -0.15em; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* 背景光斑 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58rem 30rem at 8% -6%, rgba(99, 102, 241, 0.16), transparent 62%),
    radial-gradient(46rem 28rem at 96% 2%, rgba(6, 182, 212, 0.13), transparent 60%),
    radial-gradient(60rem 34rem at 50% 108%, rgba(139, 92, 246, 0.12), transparent 66%);
}

[data-theme="dark"] body::before {
  background:
    radial-gradient(58rem 30rem at 8% -6%, rgba(99, 102, 241, 0.24), transparent 62%),
    radial-gradient(46rem 28rem at 96% 2%, rgba(6, 182, 212, 0.16), transparent 60%),
    radial-gradient(60rem 34rem at 50% 108%, rgba(139, 92, 246, 0.16), transparent 66%);
}

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

h1, h2, h3, h4 { margin: 0; line-height: 1.3; letter-spacing: -0.018em; font-weight: 680; }
p { margin: 0; }

::selection { background: rgba(99, 102, 241, 0.24); }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-mute); background-clip: content-box; }

/* ---------------------------------------------------------------- 布局 */
.shell { display: flex; flex-direction: column; min-height: 100vh; }
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 22px; }
.page { flex: 1; padding: 30px 0 72px; animation: fade-rise 0.45s var(--ease); }

@keyframes fade-rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@keyframes pop { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: none; } }

/* ---------------------------------------------------------------- 顶部导航 */
.header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}

.header-inner { display: flex; align-items: center; gap: 16px; width: 100%; }

.brand { display: flex; align-items: center; gap: 10px; font-weight: 750; font-size: 16.5px; letter-spacing: -0.02em; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 11px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-500), var(--accent-500));
  color: #fff; font-size: 17px; font-weight: 800;
  box-shadow: 0 6px 18px -6px rgba(99, 102, 241, 0.8);
}
.brand-mark svg { width: 19px; height: 19px; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: 10px; }
.nav a {
  padding: 8px 13px; border-radius: var(--radius-sm);
  color: var(--text-soft); font-size: 14px; font-weight: 560;
  transition: background 0.18s, color 0.18s;
}
.nav a:hover { background: var(--bg-hover); color: var(--text); }
.nav a.active { color: var(--brand-600); background: color-mix(in srgb, var(--brand-500) 12%, transparent); }

.header-spacer { flex: 1; }
.header-actions { display: flex; align-items: center; gap: 8px; }

.search-box {
  position: relative;
  display: flex; align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 0 12px; height: 38px; width: 220px;
  transition: border-color 0.18s, box-shadow 0.18s, width 0.24s var(--ease);
}
.search-box:focus-within {
  border-color: var(--brand-400);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-500) 14%, transparent);
  width: 260px;
}
.search-box svg { width: 15px; height: 15px; color: var(--text-mute); flex: none; }
.search-box input {
  border: 0; background: transparent; outline: 0;
  padding: 0 8px; width: 100%; font-size: 13.5px; color: var(--text);
}

/* ---------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 38px; padding: 0 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: transform 0.14s var(--ease), background 0.18s, box-shadow 0.18s, border-color 0.18s, opacity 0.18s;
  white-space: nowrap;
  background: var(--bg-subtle);
  color: var(--text);
}
.btn:hover { background: var(--bg-hover); }
.btn:active { transform: translateY(1px) scale(0.995); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
  color: #fff;
  box-shadow: 0 8px 20px -10px rgba(79, 70, 229, 0.9);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--brand-400), var(--brand-600)); }

.btn-ghost { background: transparent; border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-hover); border-color: var(--border-strong); }

.btn-danger { background: color-mix(in srgb, var(--danger-500) 12%, transparent); color: var(--danger-600); }
.btn-danger:hover { background: color-mix(in srgb, var(--danger-500) 20%, transparent); }
[data-theme="dark"] .btn-danger { color: #fca5a5; }

.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: 9px; }
.btn-icon { width: 38px; padding: 0; }
.btn-block { width: 100%; }

/* ---------------------------------------------------------------- 卡片 */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.card-pad { padding: 22px; }

/* 帖子列表 */
.thread-list { display: flex; flex-direction: column; gap: 10px; }

.thread-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.24s, transform 0.2s var(--ease), background 0.2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.thread-item::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--accent, var(--brand-500));
  opacity: 0; transition: opacity 0.2s;
}
.thread-item:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.thread-item:hover::before { opacity: 1; }

.avatar {
  width: 40px; height: 40px; border-radius: 12px; flex: none;
  display: grid; place-items: center;
  font-weight: 700; font-size: 15px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-500), var(--accent-500));
  box-shadow: var(--shadow-sm);
  user-select: none;
}
.avatar-lg { width: 56px; height: 56px; border-radius: 18px; font-size: 21px; }

.thread-main { flex: 1; min-width: 0; }
.thread-title {
  font-weight: 640; font-size: 15.5px; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin-bottom: 3px;
}
.thread-title:hover { color: var(--brand-600); }
.thread-excerpt {
  color: var(--text-mute); font-size: 13.4px;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.thread-meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-top: 8px; font-size: 12.5px; color: var(--text-mute);
}
.thread-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: 0.5; }
.thread-meta-item { display: inline-flex; align-items: center; gap: 5px; }
.thread-meta-item svg { width: 13px; height: 13px; }

/* 徽标 */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  height: 22px; padding: 0 9px; border-radius: var(--radius-full);
  font-size: 11.5px; font-weight: 650; letter-spacing: 0.01em;
  background: var(--bg-subtle); color: var(--text-soft);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.badge-brand { background: color-mix(in srgb, var(--brand-500) 14%, transparent); color: var(--brand-600); border-color: color-mix(in srgb, var(--brand-500) 26%, transparent); }
.badge-ok { background: color-mix(in srgb, var(--ok-500) 14%, transparent); color: #047857; border-color: color-mix(in srgb, var(--ok-500) 28%, transparent); }
.badge-warn { background: color-mix(in srgb, var(--warn-500) 16%, transparent); color: #b45309; border-color: color-mix(in srgb, var(--warn-500) 30%, transparent); }
.badge-danger { background: color-mix(in srgb, var(--danger-500) 13%, transparent); color: var(--danger-600); border-color: color-mix(in srgb, var(--danger-500) 26%, transparent); }
[data-theme="dark"] .badge-brand { color: #a5b4fc; }
[data-theme="dark"] .badge-ok { color: #6ee7b7; }
[data-theme="dark"] .badge-warn { color: #fcd34d; }
[data-theme="dark"] .badge-danger { color: #fca5a5; }

.cat-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; flex: none; }

/* 分类图标（SVG，保证跨系统一致渲染） */
.cat-icon {
  width: 26px; height: 26px; border-radius: 8px; flex: none;
  display: grid; place-items: center;
  background: color-mix(in srgb, currentColor 12%, transparent);
  color: var(--brand-600);
}
.cat-icon svg { width: 15px; height: 15px; }
.cat-item .cat-icon { margin-right: 1px; }

.badge svg, .thread-meta-item svg { width: 13px; height: 13px; }
.badge svg { margin-top: -1px; }

/* ---------------------------------------------------------------- 表单 */
.form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.label { font-size: 13px; font-weight: 620; color: var(--text-soft); display: flex; align-items: center; gap: 6px; }
.label .req { color: var(--danger-500); }

.input, .textarea, .select {
  width: 100%;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  font-size: 14px; color: var(--text);
  outline: 0;
  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
  font-family: inherit;
}
.textarea { resize: vertical; min-height: 120px; line-height: 1.7; }
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--brand-400);
  background: var(--bg-solid);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-500) 13%, transparent);
}
.input::placeholder, .textarea::placeholder { color: var(--text-mute); }
.input.invalid, .textarea.invalid { border-color: var(--danger-500); box-shadow: 0 0 0 4px color-mix(in srgb, var(--danger-500) 12%, transparent); }
.select { appearance: none; cursor: pointer; padding-right: 34px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237c8798' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 11px center; background-size: 15px;
}

.hint { font-size: 12.2px; color: var(--text-mute); line-height: 1.55; }
.hint.error { color: var(--danger-600); }
[data-theme="dark"] .hint.error { color: #fca5a5; }
.hint.ok { color: #047857; }
[data-theme="dark"] .hint.ok { color: #6ee7b7; }

/* 密码强度条 */
.strength { display: flex; gap: 5px; margin-top: 2px; }
.strength-bar { height: 4px; flex: 1; border-radius: 999px; background: var(--border); transition: background 0.24s; }
.strength-bar.on-1 { background: var(--danger-500); }
.strength-bar.on-2 { background: var(--warn-500); }
.strength-bar.on-3 { background: #3b82f6; }
.strength-bar.on-4 { background: var(--ok-500); }

.rule-list { display: flex; flex-direction: column; gap: 4px; margin-top: 4px; }
.rule { display: flex; align-items: center; gap: 7px; font-size: 12.2px; color: var(--text-mute); transition: color 0.2s; }
.rule svg { width: 13px; height: 13px; flex: none; }
.rule .rule-yes { display: none; color: var(--ok-500); }
.rule .rule-no { display: inline-flex; color: var(--text-mute); opacity: 0.45; }
.rule.pass { color: #047857; }
.rule.pass .rule-yes { display: inline-flex; }
.rule.pass .rule-no { display: none; }
[data-theme="dark"] .rule.pass { color: #6ee7b7; }

/* 开关 */
.switch { position: relative; display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch-track {
  width: 44px; height: 25px; border-radius: 999px; flex: none;
  background: var(--border-strong);
  transition: background 0.24s var(--ease);
  position: relative;
}
.switch-track::after {
  content: ""; position: absolute; top: 3px; left: 3px;
  width: 19px; height: 19px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  transition: transform 0.24s var(--ease);
}
.switch input:checked + .switch-track { background: linear-gradient(135deg, var(--brand-500), var(--brand-600)); }
.switch input:checked + .switch-track::after { transform: translateX(19px); }
.switch input:disabled + .switch-track { opacity: 0.5; cursor: not-allowed; }
.switch input:focus-visible + .switch-track { box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-500) 18%, transparent); }
.switch-label { font-size: 14px; font-weight: 560; }

/* ---------------------------------------------------------------- 布局组件 */
.grid { display: grid; gap: 18px; }
.grid-main { grid-template-columns: minmax(0, 1fr) 306px; align-items: start; }
@media (max-width: 940px) { .grid-main { grid-template-columns: 1fr; } }

.hero {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 34px 32px;
  overflow: hidden;
  border: 1px solid var(--border);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--brand-500) 13%, var(--bg-elev)), color-mix(in srgb, var(--accent-500) 9%, var(--bg-elev)));
  box-shadow: var(--shadow-md);
  margin-bottom: 22px;
}
.hero::after {
  content: ""; position: absolute; right: -60px; top: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.24), transparent 68%);
  pointer-events: none;
}
.hero h1 { font-size: clamp(25px, 3.4vw, 34px); font-weight: 760; letter-spacing: -0.028em; }
.hero p { color: var(--text-soft); margin-top: 9px; font-size: 14.6px; max-width: 560px; }
.hero-actions { margin-top: 20px; display: flex; gap: 10px; flex-wrap: wrap; }

.stat-row { display: flex; gap: 26px; margin-top: 22px; flex-wrap: wrap; position: relative; z-index: 1; }
.stat-item .stat-num { font-size: 21px; font-weight: 730; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat-item .stat-label { font-size: 12.2px; color: var(--text-mute); }

.side-card { padding: 18px; }
.side-title { font-size: 13px; font-weight: 680; color: var(--text-soft); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 12px; }

.cat-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: var(--radius-sm);
  transition: background 0.18s;
  cursor: pointer; font-size: 14px;
}
.cat-item:hover { background: var(--bg-hover); }
.cat-item.active { background: color-mix(in srgb, var(--brand-500) 12%, transparent); color: var(--brand-600); font-weight: 600; }
.cat-count { margin-left: auto; font-size: 12px; color: var(--text-mute); font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- 帖子详情 */
.post-head { padding: 24px 26px; border-bottom: 1px solid var(--border); }
.post-title { font-size: clamp(21px, 2.6vw, 27px); font-weight: 730; letter-spacing: -0.026em; line-height: 1.34; }
.post-meta { display: flex; align-items: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.post-body {
  padding: 22px 26px 26px;
  font-size: 15.2px; line-height: 1.82;
  white-space: pre-wrap; word-break: break-word;
  color: var(--text-soft);
}

.comment-list { display: flex; flex-direction: column; }
.comment {
  display: flex; gap: 13px; padding: 16px 22px;
  border-top: 1px solid var(--border);
  transition: background 0.18s;
}
.comment:hover { background: var(--bg-subtle); }
.comment-body { flex: 1; min-width: 0; }
.comment-head { display: flex; align-items: center; gap: 9px; margin-bottom: 3px; flex-wrap: wrap; }
.comment-author { font-weight: 640; font-size: 13.8px; }
.comment-time { font-size: 12.2px; color: var(--text-mute); }
.comment-text { font-size: 14.3px; color: var(--text-soft); white-space: pre-wrap; word-break: break-word; }
.comment-actions { margin-left: auto; opacity: 0; transition: opacity 0.18s; }
.comment:hover .comment-actions { opacity: 1; }

/* ---------------------------------------------------------------- 认证页 */
.auth-wrap {
  min-height: calc(100vh - var(--header-h) - 40px);
  display: grid; place-items: center;
  padding: 30px 20px;
}
.auth-card {
  width: 100%; max-width: 434px;
  padding: 34px;
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  animation: pop 0.4s var(--ease);
}
.auth-head { text-align: center; margin-bottom: 24px; }
.auth-head h1 { font-size: 22px; letter-spacing: -0.02em; }
.auth-head p { color: var(--text-mute); font-size: 13.6px; margin-top: 6px; }
.auth-foot { text-align: center; margin-top: 18px; font-size: 13.4px; color: var(--text-mute); }
.auth-foot a { color: var(--brand-600); font-weight: 600; }
.auth-foot a:hover { text-decoration: underline; }

.turnstile-slot { min-height: 0; display: flex; justify-content: center; }

/* ---------------------------------------------------------------- 后台 */
.admin-shell { display: grid; grid-template-columns: 218px minmax(0, 1fr); gap: 22px; align-items: start; }
@media (max-width: 900px) { .admin-shell { grid-template-columns: 1fr; } }

.admin-nav {
  position: sticky; top: calc(var(--header-h) + 16px);
  padding: 10px; display: flex; flex-direction: column; gap: 2px;
}
.admin-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 550; color: var(--text-soft);
  transition: background 0.16s, color 0.16s;
}
.admin-nav a:hover { background: var(--bg-hover); color: var(--text); }
.admin-nav a.active { background: color-mix(in srgb, var(--brand-500) 13%, transparent); color: var(--brand-600); font-weight: 640; }
.admin-nav svg { width: 17px; height: 17px; flex: none; opacity: 0.85; }

.admin-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.admin-title h1 { font-size: 22px; letter-spacing: -0.022em; }
.admin-title p { color: var(--text-mute); font-size: 13.4px; margin-top: 3px; }

.metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(158px, 1fr)); gap: 12px; }
.metric {
  padding: 16px 18px; border-radius: var(--radius);
  background: var(--bg-elev); border: 1px solid var(--border);
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}
.metric:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.metric-label { font-size: 12.4px; color: var(--text-mute); display: flex; align-items: center; gap: 6px; }
.metric-value { font-size: 26px; font-weight: 740; letter-spacing: -0.03em; margin-top: 5px; font-variant-numeric: tabular-nums; }

.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-elev); }
table.data { width: 100%; border-collapse: collapse; font-size: 13.6px; }
table.data th {
  text-align: left; font-weight: 620; font-size: 12.2px; color: var(--text-mute);
  text-transform: uppercase; letter-spacing: 0.05em;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  background: var(--bg-subtle); white-space: nowrap;
}
table.data td { padding: 13px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr { transition: background 0.16s; }
table.data tbody tr:hover { background: var(--bg-subtle); }

.row-actions { display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; }

.tabs { display: flex; gap: 4px; padding: 4px; background: var(--bg-subtle); border-radius: var(--radius-sm); border: 1px solid var(--border); width: fit-content; }
.tabs button {
  border: 0; background: transparent; padding: 7px 14px; border-radius: 8px;
  font-size: 13.2px; font-weight: 580; color: var(--text-soft); cursor: pointer;
  transition: background 0.16s, color 0.16s;
}
.tabs button.active { background: var(--bg-solid); color: var(--text); box-shadow: var(--shadow-sm); font-weight: 640; }

.setting-row {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
.setting-row:last-child { border-bottom: 0; }
.setting-info { flex: 1; min-width: 0; }
.setting-name { font-weight: 620; font-size: 14.2px; display: flex; align-items: center; gap: 8px; }
.setting-desc { font-size: 12.8px; color: var(--text-mute); margin-top: 3px; line-height: 1.6; }

.lock-note {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 13px; border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--warn-500) 11%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn-500) 26%, transparent);
  font-size: 12.8px; color: #92400e;
}
[data-theme="dark"] .lock-note { color: #fcd34d; }
.lock-note svg { width: 15px; height: 15px; flex: none; }

/* ---------------------------------------------------------------- 杂项 */
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 22px; }
.pagination button {
  min-width: 34px; height: 34px; padding: 0 10px;
  border-radius: 9px; border: 1px solid var(--border);
  background: var(--bg-elev); font-size: 13.2px; font-weight: 580; cursor: pointer;
  transition: background 0.16s, border-color 0.16s, color 0.16s;
}
.pagination button:hover:not(:disabled) { border-color: var(--border-strong); background: var(--bg-hover); }
.pagination button.active { background: var(--brand-500); border-color: var(--brand-500); color: #fff; }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

.empty {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 58px 20px; color: var(--text-mute); text-align: center;
}
.empty svg { width: 42px; height: 42px; opacity: 0.32; }
.empty-title { font-weight: 620; font-size: 15px; color: var(--text-soft); }

.skeleton {
  background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-hover) 50%, var(--bg-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* Toast */
.toast-host {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 200; display: flex; flex-direction: column; gap: 9px; align-items: center;
  pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: 9px;
  padding: 11px 17px; border-radius: var(--radius-full);
  background: var(--bg-solid);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 13.6px; font-weight: 560;
  animation: toast-in 0.3s var(--ease);
  max-width: min(90vw, 460px);
}
.toast svg { width: 16px; height: 16px; flex: none; }
.toast.ok svg { color: var(--ok-500); }
.toast.err svg { color: var(--danger-500); }
@keyframes toast-in { from { opacity: 0; transform: translateY(14px) scale(0.96); } to { opacity: 1; transform: none; } }

/* 弹窗 */
.modal-host {
  position: fixed; inset: 0; z-index: 150;
  display: grid; place-items: center;
  background: rgba(9, 12, 22, 0.5);
  backdrop-filter: blur(5px);
  padding: 20px;
  animation: fade-in 0.2s ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal {
  width: 100%; max-width: 452px;
  background: var(--bg-solid);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 26px;
  animation: pop 0.28s var(--ease);
  max-height: 88vh; overflow-y: auto;
}
.modal h3 { font-size: 18px; margin-bottom: 6px; }
.modal-desc { font-size: 13.4px; color: var(--text-mute); margin-bottom: 18px; }
.modal-actions { display: flex; gap: 9px; justify-content: flex-end; margin-top: 20px; }

/* 用户菜单 */
.menu-wrap { position: relative; }
.menu {
  position: absolute; right: 0; top: calc(100% + 8px);
  min-width: 196px; padding: 6px;
  background: var(--bg-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 60;
  animation: pop 0.18s var(--ease);
}
.menu-item {
  display: flex; align-items: center; gap: 9px;
  width: 100%; padding: 9px 11px; border-radius: 9px;
  font-size: 13.6px; font-weight: 550; color: var(--text-soft);
  background: none; border: 0; cursor: pointer; text-align: left;
  transition: background 0.16s, color 0.16s;
}
.menu-item:hover { background: var(--bg-hover); color: var(--text); }
.menu-item svg { width: 16px; height: 16px; opacity: 0.8; }
.menu-divider { height: 1px; background: var(--border); margin: 5px 6px; }
.menu-head { padding: 9px 11px 7px; }
.menu-head .name { font-weight: 660; font-size: 13.8px; }
.menu-head .sub { font-size: 12px; color: var(--text-mute); }

.footer {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  font-size: 12.8px; color: var(--text-mute);
}
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }

.inline { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; }
.gap-6 { gap: 6px; } .gap-10 { gap: 10px; } .gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; } .mt-14 { margin-top: 14px; } .mt-22 { margin-top: 22px; }
.text-mute { color: var(--text-mute); }
.text-soft { color: var(--text-soft); }
.small { font-size: 12.6px; }
.mono { font-family: var(--mono); font-size: 12.8px; letter-spacing: 0.02em; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.w-full { width: 100%; }
.hidden { display: none !important; }

.code-chip {
  font-family: var(--mono); font-size: 12.6px; font-weight: 600;
  background: var(--bg-subtle); border: 1px dashed var(--border-strong);
  padding: 3px 9px; border-radius: 7px; letter-spacing: 0.06em;
  cursor: pointer; transition: background 0.16s, border-color 0.16s;
}
.code-chip:hover { background: var(--bg-hover); border-color: var(--brand-400); }

.spinner {
  width: 17px; height: 17px; border-radius: 50%;
  border: 2px solid color-mix(in srgb, currentColor 26%, transparent);
  border-top-color: currentColor;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.perm-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 8px; }
.perm-item {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 9px 11px; border-radius: 9px; font-size: 12.6px;
  background: var(--bg-subtle); border: 1px solid var(--border);
}
.perm-item svg { width: 14px; height: 14px; flex: none; margin-top: 2px; }
.perm-yes { color: #047857; } [data-theme="dark"] .perm-yes { color: #6ee7b7; }
.perm-no { color: var(--text-mute); opacity: 0.6; }

@media (max-width: 720px) {
  .container { padding: 0 15px; }
  .page { padding: 20px 0 60px; }
  .nav { display: none; }
  .search-box { width: 150px; }
  .search-box:focus-within { width: 170px; }
  .hero { padding: 26px 22px; }
  .auth-card { padding: 26px 22px; }
  .post-head, .post-body { padding-left: 18px; padding-right: 18px; }
  .comment { padding: 14px 18px; }
  .admin-shell { gap: 14px; }
  .admin-nav { position: static; flex-direction: row; overflow-x: auto; }
  .admin-nav a { white-space: nowrap; }
}

/* 小屏隐藏按钮文字 */
@media (max-width: 560px) {
  .hide-sm { display: none; }
  .search-box { display: none; }
}