/* ═══════════════════════════════════════════════════════════
   QinRadar Web — 全局样式
   双主题：日间模式（默认） + 夜间模式
   ═══════════════════════════════════════════════════════════ */

/* ─── 日间模式（默认） ─── */
:root {
  --bg: #f8fafc;
  --bg-alt: #f1f5f9;
  --card: #ffffff;
  --border: #e2e8f0;
  --fg: #1e293b;
  --fg-dim: #64748b;
  --fg-muted: #94a3b8;
  --accent: #0284c7;
  --accent-dark: #0369a1;
  --accent-glow: rgba(2, 132, 199, 0.1);
  --green: #16a34a;
  --yellow: #ca8a04;
  --red: #dc2626;
  --purple: #6366f1;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.12);
  --navbar-bg: rgba(255, 255, 255, 0.85);
  --table-hover: rgba(2, 132, 199, 0.04);
  --input-bg: #f8fafc;
  --hero-grid-line: rgba(2, 132, 199, 0.04);
  --platform-github-bg: rgba(0, 0, 0, 0.08);
  --platform-github-fg: #475569;
  --table-border-light: rgba(226, 232, 240, 0.8);
  --btn-primary-fg: #ffffff;
  --step-fg: #ffffff;
  --badge-admin-bg: rgba(220, 38, 38, 0.12);
  --badge-editor-bg: rgba(99, 102, 241, 0.12);
  --badge-active-bg: rgba(22, 163, 74, 0.12);
  --badge-disabled-bg: rgba(220, 38, 38, 0.12);
  --badge-pending-bg: rgba(202, 138, 4, 0.12);
  --flash-success-bg: rgba(22, 163, 74, 0.1);
  --flash-error-bg: rgba(220, 38, 38, 0.1);
  --platform-yt-bg: rgba(255, 0, 0, 0.12);
  --platform-yt-fg: #dc2626;
  --platform-bili-bg: rgba(0, 161, 214, 0.12);
  --platform-bili-fg: #0e7490;
  --platform-rss-bg: rgba(255, 165, 0, 0.12);
  --platform-rss-fg: #b45309;
}

/* ─── 夜间模式 ─── */
:root[data-theme="dark"] {
  --bg: #0f172a;
  --bg-alt: #1e293b;
  --card: #1e293b;
  --border: #334155;
  --fg: #e2e8f0;
  --fg-dim: #94a3b8;
  --fg-muted: #64748b;
  --accent: #38bdf8;
  --accent-dark: #0ea5e9;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --green: #4ade80;
  --yellow: #fbbf24;
  --red: #f87171;
  --purple: #818cf8;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.4);
  --navbar-bg: rgba(15, 23, 42, 0.85);
  --table-hover: rgba(56, 189, 248, 0.05);
  --input-bg: #0f172a;
  --hero-grid-line: rgba(56, 189, 248, 0.03);
  --platform-github-bg: rgba(255, 255, 255, 0.12);
  --platform-github-fg: #cbd5e1;
  --table-border-light: rgba(51, 65, 85, 0.5);
  --btn-primary-fg: #0f172a;
  --step-fg: #0f172a;
  --badge-admin-bg: #ef444420;
  --badge-editor-bg: #8b5cf620;
  --badge-active-bg: #4ade8020;
  --badge-disabled-bg: #f8717120;
  --badge-pending-bg: #fbbf2420;
  --flash-success-bg: rgba(74, 222, 128, 0.15);
  --flash-error-bg: rgba(248, 113, 113, 0.15);
  --platform-yt-bg: #ff000020;
  --platform-yt-fg: #ff5555;
  --platform-bili-bg: #00a1d620;
  --platform-bili-fg: #5fc;
  --platform-rss-bg: #ffa50020;
  --platform-rss-fg: #fbbf24;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.25s ease, color 0.25s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── 主题切换按钮 ─── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--fg);
  transition: all 0.2s;
  flex-shrink: 0;
  margin-left: 4px;
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ─── 导航栏 ─── */
.navbar {
  background: var(--navbar-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--fg);
}
.nav-brand:hover { text-decoration: none; }
.brand-icon { font-size: 1.4rem; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  color: var(--fg-dim);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  font-size: 0.9rem;
}
.nav-link:hover {
  color: var(--fg);
  background: var(--accent-glow);
  text-decoration: none;
}
.nav-register {
  background: var(--accent);
  color: var(--btn-primary-fg);
  font-weight: 600;
}
.nav-register:hover { background: var(--accent-dark); color: var(--btn-primary-fg); }
.nav-logout { color: var(--red); }
.nav-divider { width: 1px; height: 24px; background: var(--border); margin: 0 8px; }
.nav-user { color: var(--fg); font-size: 0.9rem; font-weight: 500; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: 0.3s;
}

/* ─── 主内容 ─── */
.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 16px;
}

/* ─── Hero ─── */
.hero {
  position: relative;
  text-align: center;
  padding: 80px 16px 64px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -1;
}
.hero-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-glow);
  border: 1px solid var(--border);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 24px;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--fg-dim);
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-hint {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* ─── 按钮 ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  gap: 6px;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: var(--btn-primary-fg);
}
.btn-primary:hover { background: var(--accent-dark); color: var(--btn-primary-fg); }
.btn-outline {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger {
  background: var(--red);
  color: #fff;
}
.btn-success {
  background: var(--green);
  color: #fff;
}
.btn-warning {
  background: var(--yellow);
  color: #fff;
}
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ─── Section ─── */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); border-radius: var(--radius); padding: 64px 32px; margin: 0 -16px; }
.section-narrow { max-width: 800px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-title { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.section-desc { color: var(--fg-dim); font-size: 1.05rem; }

/* ─── 功能卡片 ─── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all 0.3s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}
.feature-icon { font-size: 2.5rem; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.feature-card p { color: var(--fg-dim); font-size: 0.95rem; }

.feature-card-sm {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  transition: all 0.3s;
}
.feature-card-sm:hover { border-color: var(--accent); }
.feature-icon-sm { font-size: 1.8rem; margin-bottom: 8px; }
.feature-card-sm h4 { font-size: 1rem; margin-bottom: 6px; }
.feature-card-sm p { color: var(--fg-dim); font-size: 0.85rem; }

/* ─── 步骤 ─── */
.steps { display: flex; align-items: flex-start; justify-content: center; flex-wrap: wrap; gap: 0; }
.step { display: flex; flex-direction: column; align-items: center; max-width: 280px; text-align: center; padding: 0 20px; }
.step-number {
  width: 48px; height: 48px;
  background: var(--accent);
  color: var(--step-fg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.step-connector {
  width: 80px; height: 2px;
  background: var(--border);
  margin-top: 24px;
}
.step-content h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step-content p { color: var(--fg-dim); font-size: 0.9rem; }

/* ─── 为什么用 ─── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.why-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.3s;
}
.why-item:hover { border-color: var(--accent); }
.why-icon { font-size: 1.8rem; flex-shrink: 0; }
.why-text h4 { font-size: 1.05rem; margin-bottom: 6px; }
.why-text p { color: var(--fg-dim); font-size: 0.9rem; }

/* ─── CTA ─── */
.cta {
  background: linear-gradient(135deg, var(--accent-glow), rgba(99, 102, 241, 0.08));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  margin-top: 32px;
}
.cta-content h2 { font-size: 1.8rem; margin-bottom: 8px; }
.cta-content p { color: var(--fg-dim); margin-bottom: 24px; }

/* ─── 内容块 ─── */
.content-block { margin-bottom: 32px; padding: 24px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
.content-block h3 { font-size: 1.3rem; margin-bottom: 12px; color: var(--yellow); }
.content-block h4 { font-size: 1.05rem; margin-top: 16px; margin-bottom: 8px; color: var(--accent); }
.content-block p { color: var(--fg-dim); margin-bottom: 12px; }
.list { list-style: none; padding: 0; }
.list li { padding: 6px 0 6px 24px; position: relative; color: var(--fg-dim); }
.list li::before { content: "→"; position: absolute; left: 0; color: var(--accent); }

/* ─── 认证页面 ─── */
.auth-container { display: flex; justify-content: center; padding: 40px 0; }
.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
}
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-icon { font-size: 2.5rem; margin-bottom: 12px; }
.auth-header h2 { font-size: 1.5rem; margin-bottom: 4px; }
.auth-header p { color: var(--fg-dim); font-size: 0.9rem; }
.auth-form { display: flex; flex-direction: column; gap: 20px; }
.auth-footer { text-align: center; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--border); }
.auth-footer p { color: var(--fg-dim); font-size: 0.9rem; }
.auth-disabled { text-align: center; padding: 24px; color: var(--fg-dim); }

/* ─── 表单 ─── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; color: var(--fg); font-weight: 500; }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--fg);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s, background 0.25s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.form-hint { font-size: 0.8rem; color: var(--fg-muted); }
.required { color: var(--red); }
.form-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-options { display: flex; align-items: center; gap: 8px; }
.checkbox-label { display: flex; align-items: center; gap: 6px; font-size: 0.9rem; color: var(--fg-dim); cursor: pointer; }
.checkbox-label input { width: auto; }
.password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}
.password-wrapper input {
  width: 100%;
  flex: 1;
  padding-right: 40px;
}
.password-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  color: var(--fg-dim);
  padding: 4px;
  z-index: 1;
}
.strength-weak { color: var(--red); }
.strength-medium { color: var(--yellow); }
.strength-strong { color: var(--green); }

/* ─── 仪表盘 ─── */
.dashboard-header { margin-bottom: 32px; }
.dashboard-header h1 { font-size: 1.8rem; margin-bottom: 4px; }
.dashboard-header p { color: var(--fg-dim); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.stat-icon { font-size: 2rem; }
.stat-value { font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.85rem; color: var(--fg-dim); }

.dashboard-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.action-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--fg);
  transition: all 0.2s;
}
.action-card:hover { border-color: var(--accent); background: var(--accent-glow); text-decoration: none; }
.action-icon { font-size: 1.5rem; }

.dashboard-section { margin-bottom: 32px; }
.dashboard-section h2 { font-size: 1.3rem; margin-bottom: 16px; }

.follow-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.follow-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.follow-platform {
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 600;
  text-transform: uppercase;
}
.platform-youtube { background: var(--platform-yt-bg); color: var(--platform-yt-fg); }
.platform-bilibili { background: var(--platform-bili-bg); color: var(--platform-bili-fg); }
.platform-rss { background: var(--platform-rss-bg); color: var(--platform-rss-fg); }
.platform-github { background: var(--platform-github-bg); color: var(--platform-github-fg); }
.follow-name { font-weight: 500; }
.follow-id { color: var(--fg-dim); font-size: 0.85rem; margin-left: auto; }

.empty-state {
  text-align: center;
  padding: 40px 16px;
  color: var(--fg-dim);
}
.empty-state p { margin-bottom: 8px; }
.empty-state-sm { text-align: center; padding: 24px; color: var(--fg-muted); font-size: 0.9rem; }

/* ─── 表单卡片 ─── */
.form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 32px;
}
.form-card h3 { margin-bottom: 20px; font-size: 1.2rem; }
.form-actions { display: flex; gap: 12px; margin-top: 16px; }

/* ─── 数据表格 ─── */
.table-responsive { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.data-table th {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border);
  color: var(--fg-dim);
  font-weight: 600;
  white-space: nowrap;
}
.data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--table-border-light);
  color: var(--fg);
}
.data-table tr:hover td { background: var(--table-hover); }
.identifier-cell, .detail-cell {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--fg-dim);
  font-size: 0.85rem;
}

/* ─── Badge ─── */
.role-badge, .status-badge, .action-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}
.role-admin { background: var(--badge-admin-bg); color: var(--red); }
.role-editor { background: var(--badge-editor-bg); color: var(--purple); }
.role-user { background: var(--accent-glow); color: var(--accent); }
.status-active { background: var(--badge-active-bg); color: var(--green); }
.status-disabled { background: var(--badge-disabled-bg); color: var(--red); }
.status-pending { background: var(--badge-pending-bg); color: var(--yellow); }
.action-badge { background: var(--accent-glow); color: var(--accent); }

/* ─── 分页 ─── */
.pagination { display: flex; align-items: center; gap: 16px; justify-content: center; margin-top: 20px; }
.pagination-info { color: var(--fg-dim); font-size: 0.9rem; }

/* ─── 管理后台布局 ─── */
.admin-layout { display: grid; grid-template-columns: 200px 1fr; gap: 24px; margin: -32px -16px; }
.admin-sidebar {
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  min-height: calc(100vh - 60px);
}
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--fg-dim);
  font-size: 0.9rem;
  transition: all 0.2s;
}
.admin-nav-link:hover { background: var(--accent-glow); color: var(--fg); text-decoration: none; }
.admin-nav-link.active { background: var(--accent); color: var(--btn-primary-fg); font-weight: 600; }

.admin-content { padding: 24px; }
.admin-header { margin-bottom: 32px; }
.admin-header h1 { font-size: 1.8rem; margin-bottom: 4px; }
.admin-header p { color: var(--fg-dim); }

.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.admin-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}
.panel-header h2 { font-size: 1.1rem; }
.panel-link { font-size: 0.85rem; }
.panel-body { padding: 20px 24px; }

/* ─── 用户列表 ─── */
.user-list { display: flex; flex-direction: column; gap: 12px; }
.user-list-item { display: flex; align-items: center; gap: 12px; }
.user-avatar {
  width: 36px; height: 36px;
  background: var(--accent);
  color: var(--btn-primary-fg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name { font-weight: 500; }
.user-meta { font-size: 0.8rem; color: var(--fg-dim); }

.action-buttons { display: flex; gap: 8px; }

/* ─── 筛选栏 ─── */
.filter-bar { margin-bottom: 24px; }
.filter-form { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.filter-input, .filter-select {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  color: var(--fg);
  font-size: 0.9rem;
}

/* ─── 配置表 ─── */
.config-table { width: 100%; border-collapse: collapse; }
.config-table th { text-align: left; padding: 10px 12px; color: var(--fg-dim); font-size: 0.85rem; border-bottom: 1px solid var(--border); }
.config-table td { padding: 10px 12px; border-bottom: 1px solid var(--table-border-light); }
.config-input { width: 100%; background: var(--input-bg); border: 1px solid var(--border); border-radius: 4px; padding: 6px 10px; color: var(--fg); font-family: inherit; font-size: 0.85rem; }
.config-key-wrapper { display: flex; align-items: center; position: relative; }
.config-key-wrapper .config-input { padding-right: 36px; }
.config-key-wrapper .password-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--fg-dim);
  padding: 2px;
  z-index: 1;
}

/* ─── 图表 ─── */
.bar-chart { display: flex; flex-direction: column; gap: 16px; }
.bar-item { display: flex; flex-direction: column; gap: 6px; }
.bar-label { display: flex; justify-content: space-between; align-items: center; }
.bar-value { font-weight: 600; }
.bar-track { width: 100%; height: 24px; background: var(--input-bg); border-radius: 4px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 4px; transition: width 0.5s; }
.bar-fill-active { background: var(--green); }
.bar-fill-disabled { background: var(--red); }
.bar-fill-pending { background: var(--yellow); }

.trend-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 200px;
  padding-bottom: 24px;
  position: relative;
}
.trend-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  flex: 1;
  height: 100%;
  position: relative;
}
.trend-bar-fill {
  width: 100%;
  background: var(--accent);
  border-radius: 4px 4px 0 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 2px;
  transition: height 0.5s;
}
.trend-count {
  font-size: 0.7rem;
  color: var(--fg);
  padding: 2px 0;
  font-weight: 600;
}
.trend-date {
  font-size: 0.7rem;
  color: var(--fg-dim);
  margin-top: 4px;
}

/* ─── 错误页 ─── */
.error-page {
  text-align: center;
  padding: 80px 16px;
}
.error-code {
  font-size: 6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.error-page h2 { font-size: 1.5rem; margin-bottom: 8px; }
.error-page p { color: var(--fg-dim); margin-bottom: 24px; }

/* ─── 消息提示 ─── */
.flash-container {
  max-width: 1200px;
  margin: 16px auto 0;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.flash-message {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  animation: slideDown 0.3s ease;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
.flash-success { background: var(--flash-success-bg); border: 1px solid rgba(22, 163, 74, 0.3); color: var(--green); }
:root[data-theme="dark"] .flash-success { border-color: rgba(74, 222, 128, 0.3); }
.flash-error { background: var(--flash-error-bg); border: 1px solid rgba(220, 38, 38, 0.3); color: var(--red); }
:root[data-theme="dark"] .flash-error { border-color: rgba(248, 113, 113, 0.3); }
.flash-info { background: var(--accent-glow); border: 1px solid var(--border); color: var(--accent); }
.flash-warning { background: var(--badge-pending-bg); border: 1px solid rgba(202, 138, 4, 0.3); color: var(--yellow); }
:root[data-theme="dark"] .flash-warning { border-color: rgba(251, 191, 36, 0.3); }
.flash-close { background: none; border: none; color: inherit; cursor: pointer; font-size: 1.2rem; }

/* ─── 页脚 ─── */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 16px;
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.85rem;
}
.footer-container { max-width: 1200px; margin: 0 auto; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 8px; font-size: 1rem; font-weight: 600; color: var(--fg); }
.footer p { margin-bottom: 4px; }

/* ─── 响应式 ─── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px;
    gap: 8px;
  }
  .nav-menu.show { display: flex; }
  .nav-divider { display: none; }

  .hero-title { font-size: 1.8rem; }
  .hero-subtitle { font-size: 0.95rem; }
  .hero-actions { flex-direction: column; }

  .section { padding: 40px 0; }
  .section-alt { padding: 40px 16px; }
  .section-title { font-size: 1.5rem; }

  .feature-grid { grid-template-columns: 1fr; }

  .steps { flex-direction: column; gap: 24px; }
  .step-connector { display: none; }

  .form-row { grid-template-columns: 1fr; }

  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { min-height: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .admin-nav { flex-direction: row; overflow-x: auto; }
  .admin-nav-link { white-space: nowrap; }

  .admin-grid { grid-template-columns: 1fr; }

  .data-table { font-size: 0.8rem; }
  .data-table th, .data-table td { padding: 8px; }
  .action-buttons { flex-direction: column; }

  .trend-chart { height: 150px; }
  .trend-date { font-size: 0.6rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.5rem; }
  .auth-card { padding: 24px; }
  .stat-card { padding: 16px; }
  .stat-value { font-size: 1.4rem; }
}