/* ===== T2 - 毛玻璃风格主题 ===== */
:root {
  --bg: #f0f4ff;
  --card: rgba(255,255,255,0.55);
  --card-solid: #fff;
  --text: #172033;
  --muted: #667085;
  --primary: #3867ff;
  --primary2: #7c3aed;
  --line: rgba(231,234,243,0.6);
  --ok: #12b76a;
  --warn: #f79009;
  --bad: #f04438;
  --glass-bg: rgba(255,255,255,0.45);
  --glass-border: rgba(255,255,255,0.6);
  --glass-shadow: 0 8px 32px rgba(31,52,115,0.10);
  --glass-blur: 18px;
  --radius: 20px;
  --radius-sm: 14px;
  --radius-xs: 10px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(56,103,255,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(124,58,237,0.06) 0%, transparent 60%);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== 容器 ===== */
.wrap { max-width: 1200px; margin: auto; padding: 0 24px; }

/* ===== 顶部导航 - 毛玻璃 ===== */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 24px rgba(31,52,115,0.06);
}

.nav {
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}

.brand {
  font-size: 22px; font-weight: 800;
  display: flex; align-items: center; gap: 10px;
  letter-spacing: -0.02em;
}
.brand img { max-height: 38px; max-width: 160px; object-fit: contain; }
.brand span {
  display: inline-grid; place-items: center;
  width: 36px; height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff; font-size: 16px;
}

.nav nav {
  display: flex; gap: 6px; align-items: center;
}
.nav nav a {
  padding: 8px 16px;
  border-radius: var(--radius-xs);
  font-size: 15px; font-weight: 500;
  color: var(--muted);
  transition: var(--transition);
  position: relative;
}
.nav nav a:hover {
  color: var(--primary);
  background: rgba(56,103,255,0.06);
}
.nav nav a.btn { color: #fff; }

/* 导航下拉菜单 */
.nav-item {
  position: relative;
  display: inline-block;
}
.nav-item > a::after {
  content: ' ▾';
  font-size: 10px;
  opacity: 0.5;
}
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 180px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  padding: 6px;
  z-index: 1000;
  margin-top: 4px;
}
.nav-item:hover > .nav-dropdown {
  display: block;
  animation: dropIn 0.18s ease;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.nav-dropdown a {
  display: block;
  padding: 10px 16px !important;
  font-size: 14px !important;
  border-radius: var(--radius-xs) !important;
  white-space: nowrap;
  color: var(--text) !important;
}
.nav-dropdown a:hover {
  background: rgba(56,103,255,0.08) !important;
  color: var(--primary) !important;
}

/* 移动端：点击展开下拉 */
@media (max-width: 768px) {
  .nav-dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    background: rgba(56,103,255,0.04);
    border-radius: var(--radius-xs);
    margin-top: 4px;
    display: none;
  }
  .nav-item.open > .nav-dropdown { display: block; }
  .nav-item > a::after { content: ' ▸'; }
  .nav-item.open > a::after { content: ' ▾'; }
}

/* ===== 按钮系统 ===== */
.btn, button {
  border: 0; cursor: pointer;
  font-weight: 700; font-size: 15px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff;
  box-shadow: 0 4px 16px rgba(56,103,255,0.25);
  transition: var(--transition);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.btn::before, button::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: var(--transition);
}
.btn:hover, button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(56,103,255,0.35);
}
.btn:hover::before, button:hover::before { opacity: 1; }
.btn:active, button:active { transform: translateY(0); }

.btn.small { padding: 8px 14px; font-size: 13px; border-radius: var(--radius-xs); }

/* 次要按钮 */
.btn-outline {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  color: var(--primary);
  box-shadow: none;
}
.btn-outline:hover {
  background: rgba(56,103,255,0.08);
  box-shadow: 0 4px 16px rgba(56,103,255,0.12);
}

/* 危险按钮 */
.btn-danger {
  background: linear-gradient(135deg, #f04438, #d92d20);
  box-shadow: 0 4px 16px rgba(240,68,56,0.25);
}
.btn-danger:hover { box-shadow: 0 8px 28px rgba(240,68,56,0.35); }

/* ===== 主内容区 ===== */
.main {
  min-height: calc(100vh - 140px);
  padding: 36px 0 60px;
}

/* ===== 首页 Hero - 毛玻璃卡片 ===== */
.hero {
  display: grid; grid-template-columns: 1.6fr .8fr; gap: 32px;
  padding: 52px;
  border-radius: 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -40%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(56,103,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.eyebrow {
  color: var(--primary); font-weight: 800;
  letter-spacing: 0.16em; font-size: 13px;
  text-transform: uppercase;
}
.hero h1 { font-size: 44px; line-height: 1.15; margin: 12px 0; letter-spacing: -0.02em; }
.hero p { font-size: 17px; color: var(--muted); line-height: 1.7; }

/* ===== 搜索框 ===== */
.search { display: flex; gap: 12px; margin-top: 28px; }
.search input {
  flex: 1;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 15px;
  transition: var(--transition);
}
.search input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(56,103,255,0.12);
}

.hot-tags {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-top: 16px; color: var(--muted); font-size: 14px;
}
.hot-tags a {
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  font-size: 13px; color: var(--primary);
  transition: var(--transition);
}
.hot-tags a:hover {
  background: rgba(56,103,255,0.10);
  transform: translateY(-1px);
}

/* ===== 表单元素 ===== */
input, select, textarea {
  width: 100%;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  padding: 12px 16px;
  font: inherit; font-size: 15px;
  transition: var(--transition);
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(56,103,255,0.10);
  background: rgba(255,255,255,0.7);
}
textarea { min-height: 120px; resize: vertical; }

/* ===== 分区标题 ===== */
.section { margin-top: 40px; }
.section-title {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 20px;
}
.section-title h2 { margin: 0; font-size: 26px; letter-spacing: -0.02em; }
.section-title span, .muted { color: var(--muted); }

/* ===== 网址卡片 - 毛玻璃 ===== */
.grid { display: grid; gap: 18px; }
.cards { grid-template-columns: repeat(4, 1fr); }

.site-card {
  display: flex; gap: 16px;
  padding: 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(31,52,115,0.06);
  transition: var(--transition);
  min-height: 140px;
  text-decoration: none;
}
.site-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(31,52,115,0.14);
  border-color: rgba(56,103,255,0.2);
}

.favicon {
  flex: 0 0 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(56,103,255,0.12), rgba(124,58,237,0.12));
  display: grid; place-items: center;
  color: var(--primary); font-weight: 900; font-size: 18px;
}
.site-logo {
  flex: 0 0 48px; width: 48px; height: 48px;
  border-radius: 14px;
  object-fit: cover;
}
.site-card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.site-card h3 em {
  font-style: normal; font-size: 11px;
  background: linear-gradient(135deg, #fff1d6, #ffe8cc);
  color: #b54708; border-radius: 6px;
  padding: 2px 7px; margin-left: 6px;
  vertical-align: middle;
}
.site-card p { margin: 0 0 10px; color: var(--muted); font-size: 14px; line-height: 1.5; }
.site-card small { color: #98a2b3; font-size: 12px; }

/* ===== 面板/认证框 - 毛玻璃 ===== */
.auth-box, .panel {
  max-width: 980px; margin: 24px auto;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--glass-shadow);
}
.auth-box { max-width: 440px; }
.auth-box h1, .panel h1 { margin-bottom: 8px; font-size: 24px; letter-spacing: -0.02em; }
.auth-box p { margin-top: 16px; color: var(--muted); }

/* ===== 表单布局 ===== */
.form { display: grid; gap: 18px; }
.form.two { grid-template-columns: repeat(2, 1fr); }
.form label { display: grid; gap: 8px; font-weight: 600; font-size: 14px; color: var(--text); }
.wide { grid-column: 1 / -1; }

/* ===== 提示框 ===== */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin: 14px 0;
  font-size: 14px; font-weight: 500;
  background: rgba(56,103,255,0.08);
  color: var(--primary);
  border: 1px solid rgba(56,103,255,0.12);
}
.alert.success {
  background: rgba(18,183,106,0.08);
  color: #027a48;
  border-color: rgba(18,183,106,0.15);
}
.alert.error {
  background: rgba(240,68,56,0.08);
  color: #b42318;
  border-color: rgba(240,68,56,0.12);
}

/* ===== 仪表盘统计 - 毛玻璃卡片 ===== */
.dashboard {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 18px; margin: 24px 0;
}
.stat {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 4px 16px rgba(31,52,115,0.05);
  transition: var(--transition);
}
.stat:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(31,52,115,0.10); }
.stat b { display: block; font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
.stat span { color: var(--muted); font-size: 14px; }
.stat a { color: var(--primary); transition: var(--transition); }
.stat a:hover { text-decoration: underline; }

/* ===== 表格 - 毛玻璃 ===== */
.table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table th, .table td {
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
  text-align: left; vertical-align: top;
  font-size: 14px;
}
.table th {
  background: rgba(56,103,255,0.04);
  font-weight: 700; font-size: 13px;
  color: var(--muted); text-transform: uppercase;
  letter-spacing: 0.04em;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: rgba(56,103,255,0.03); }

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px; font-weight: 600;
  background: rgba(56,103,255,0.08);
  color: var(--primary);
}
.badge.pending { background: rgba(247,144,9,0.10); color: #b54708; }
.badge.approved { background: rgba(18,183,106,0.10); color: #027a48; }
.badge.rejected { background: rgba(240,68,56,0.10); color: #b42318; }

/* ===== 云币金额 ===== */
.coin-plus { color: var(--ok); font-weight: 800; }
.coin-minus { color: var(--bad); font-weight: 800; }

/* ===== 分类标签 ===== */
.tabs {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin: 16px 0 26px;
}
.tabs a {
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 14px; font-weight: 500;
  color: var(--muted);
  transition: var(--transition);
}
.tabs a:hover { border-color: var(--primary); color: var(--primary); }
.tabs a.active {
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 16px rgba(56,103,255,0.25);
}

/* ===== 兑换卡片 - 毛玻璃 ===== */
.exchange-grid { grid-template-columns: repeat(3, 1fr); }

.exchange-card {
  display: block;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(31,52,115,0.06);
  transition: var(--transition);
  text-decoration: none;
}
.exchange-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(31,52,115,0.14);
}
.exchange-card img, .cover-placeholder {
  width: 100%; height: 160px;
  object-fit: cover;
  background: linear-gradient(135deg, rgba(56,103,255,0.08), rgba(124,58,237,0.08));
  display: grid; place-items: center;
  color: var(--primary); font-size: 28px; font-weight: 900;
}
.exchange-card div:not(.cover-placeholder) { padding: 20px; }
.exchange-card b { font-size: 18px; display: block; margin-bottom: 6px; }
.exchange-card p { color: var(--muted); min-height: 42px; font-size: 14px; line-height: 1.5; }
.exchange-card small { color: #98a2b3; font-size: 12px; }
.exchange-card strong {
  display: block; margin-top: 12px;
  color: var(--primary); font-size: 18px; font-weight: 800;
}

/* ===== 兑换详情 ===== */
.detail-cover { max-width: 100%; border-radius: 18px; margin: 12px 0; }
.exchange-content {
  background: rgba(248,250,255,0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px; line-height: 1.8;
  margin-top: 16px;
}

/* ===== 用户中心 - 侧边栏布局 ===== */
.user-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  margin-top: 8px;
}
.user-sidebar {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  box-shadow: var(--glass-shadow);
  position: sticky;
  top: 88px;
  align-self: start;
}
.user-avatar {
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
.avatar-circle {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff; font-size: 24px; font-weight: 900;
  display: inline-grid; place-items: center;
  margin-bottom: 12px;
}
.user-avatar b { display: block; font-size: 16px; margin-bottom: 4px; }
.user-avatar span { color: var(--muted); font-size: 13px; }
.user-menu { display: flex; flex-direction: column; gap: 4px; }
.user-menu a {
  padding: 12px 16px;
  border-radius: var(--radius-xs);
  font-size: 14px; font-weight: 500;
  color: var(--muted);
  transition: var(--transition);
}
.user-menu a:hover { background: rgba(56,103,255,0.06); color: var(--primary); }
.user-menu a.active {
  background: linear-gradient(135deg, rgba(56,103,255,0.1), rgba(124,58,237,0.1));
  color: var(--primary); font-weight: 700;
}
.user-content {
  min-width: 0;
}
.user-content h2 {
  font-size: 22px; margin-bottom: 4px;
}
.user-content .panel h3 {
  font-size: 16px; margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.user-actions {
  display: flex; gap: 12px; flex-wrap: wrap;
}

/* 旧版兼容 - 移动端覆盖 */
@media (max-width: 768px) {
  .user-layout {
    grid-template-columns: 1fr;
  }
  .user-sidebar {
    position: static;
  }
  .user-menu {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }
  .user-menu a {
    padding: 8px 12px;
    font-size: 13px;
  }
}

/* ===== 页脚 ===== */
.footer {
  padding: 32px 0;
  color: var(--muted); text-align: center;
  font-size: 14px;
  border-top: 1px solid var(--line);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ===== 后台侧边栏 ===== */
.admin { display: flex; min-height: 100vh; }
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: 240px;
  background: rgba(17,24,39,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: #d1d5db;
  padding: 28px 20px;
  display: flex; flex-direction: column; gap: 4px;
  border-right: 1px solid rgba(255,255,255,0.06);
  overflow-y: auto;
}
.sidebar b {
  color: #fff; font-size: 20px;
  margin-bottom: 24px; padding: 0 14px;
  display: flex; align-items: center; gap: 10px;
}
.sidebar a {
  padding: 12px 16px;
  border-radius: var(--radius-xs);
  font-size: 14px; font-weight: 500;
  transition: var(--transition);
  color: #9ca3af;
}
.sidebar a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar a.active {
  background: linear-gradient(135deg, rgba(56,103,255,0.2), rgba(124,58,237,0.2));
  color: #fff;
}

.admin-main {
  margin-left: 240px;
  padding: 32px;
  width: calc(100% - 240px);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(56,103,255,0.04) 0%, transparent 60%);
}

.admin-login {
  display: grid; place-items: center;
  min-height: 100vh;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 50% 30%, rgba(56,103,255,0.08) 0%, transparent 60%);
}

/* ===== 行内操作 ===== */
.inline {
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
}
.inline input { width: 140px; }
.inline button {
  padding: 8px 14px;
  border-radius: var(--radius-xs);
  font-size: 13px;
}

/* ===== 代码/卡密 ===== */
code {
  background: rgba(56,103,255,0.06);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--primary);
}

/* ===== 通用链接按钮 ===== */
a.btn { text-decoration: none; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .exchange-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard, .user-header { grid-template-columns: repeat(2, 1fr); }
  .form.two { grid-template-columns: 1fr; }
  .sidebar { position: static; width: auto; flex-direction: row; flex-wrap: wrap; padding: 12px; gap: 4px; }
  .admin { display: block; }
  .admin-main { margin-left: 0; width: auto; }
  .sidebar b { width: 100%; margin-bottom: 8px; }
}

@media (max-width: 560px) {
  .cards, .exchange-grid { grid-template-columns: 1fr; }
  .dashboard, .user-header { grid-template-columns: 1fr; }
  .hero { padding: 28px; }
  .hero h1 { font-size: 30px; }
  .nav { height: auto; padding: 14px 16px; flex-direction: column; gap: 12px; align-items: stretch; }
  .nav nav { flex-wrap: wrap; justify-content: center; }
  .search { flex-direction: column; }
  .user-actions { flex-direction: column; }
}