:root {
  --bg: #0f1117;
  --dark-900: #0f0f17;
  --dark-800: #1a1f2e;
  --dark-700: #242b3d;
  --dark-600: #334155;
  --dark-500: #475569;
  --accent: #22d3ee;
  --accent-dim: rgba(34,211,238,0.15);
  --yellow: #fbbf24;
  --green: #22c55e;
  --red: #ef4444;
  --purple: #a855f7;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --border: #1e293b;
  --border-bright: #2d3a4f;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif; font-size: 14px; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.85; }
button { cursor: pointer; font-family: inherit; font-size: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; background: var(--dark-700); border: 1px solid var(--dark-600); color: var(--text); border-radius: 8px; padding: 9px 12px; outline: none; transition: border-color 0.15s; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); }

/* ==================== Layout ==================== */
.app-shell { display: flex; height: 100vh; overflow: hidden; }

/* ==================== Sidebar ==================== */
.sidebar {
  width: 230px;
  background: var(--dark-900);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width 0.25s ease, transform 0.25s ease;
  overflow: hidden;
}
.sidebar-logo {
  padding: 18px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  white-space: nowrap;
}
.sidebar-logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--accent), #06b6d4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  flex-shrink: 0;
}
.sidebar-logo-text { font-size: 15px; font-weight: 700; color: #fff; flex: 1; overflow: hidden; transition: opacity 0.2s; }
.sidebar-nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 10px 8px; display: flex; flex-direction: column; gap: 2px; }
.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--text-dim);
  transition: all 0.15s;
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
}
.sidebar-nav-item:hover { background: var(--dark-800); color: var(--text); }
.sidebar-nav-item.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.sidebar-nav-item .icon { font-size: 15px; width: 20px; text-align: center; flex-shrink: 0; }
.sidebar-nav-item .label { transition: opacity 0.2s; }

/* Sidebar collapse button (desktop only) */
.sidebar-collapse-btn {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 8px 14px;
  background: none;
  border: none;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  width: 100%;
  transition: all 0.15s;
  flex-shrink: 0;
}
.sidebar-collapse-btn:hover { color: var(--text); background: var(--dark-800); }
.collapse-icon { font-size: 16px; display: inline-block; transition: transform 0.25s; line-height: 1; }

/* Collapsed sidebar state */
.sidebar.collapsed { width: 56px; }
.sidebar.collapsed .sidebar-logo-text { opacity: 0; width: 0; }
.sidebar.collapsed .sidebar-nav-item { justify-content: center; padding: 10px; }
.sidebar.collapsed .sidebar-nav-item .label { opacity: 0; width: 0; overflow: hidden; }
.sidebar.collapsed .sidebar-nav-item .icon { width: auto; }
.sidebar.collapsed .sidebar-collapse-btn { justify-content: center; padding: 8px; }
.sidebar.collapsed .collapse-icon { transform: rotate(180deg); }
.sidebar.collapsed .sidebar-footer { padding: 8px; }
.sidebar.collapsed .sidebar-user { justify-content: center; }
.sidebar.collapsed .sidebar-user-info { display: none; }
.sidebar.collapsed .sidebar-logout { display: none; }
.sidebar.collapsed .sidebar-user-avatar { margin: 0 auto; }

.sidebar-footer { padding: 12px; border-top: 1px solid var(--border); flex-shrink: 0; }
.sidebar-user { display: flex; align-items: center; gap: 8px; overflow: hidden; }
.sidebar-user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--dark-600); display: flex; align-items: center; justify-content: center; font-size: 13px; color: var(--text-dim); flex-shrink: 0; }
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name { font-size: 13px; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-tier { font-size: 11px; color: var(--text-muted); }
.sidebar-logout { background: none; border: none; color: var(--text-muted); font-size: 16px; padding: 4px 6px; border-radius: 6px; transition: all 0.15s; flex-shrink: 0; }
.sidebar-logout:hover { background: var(--dark-700); color: var(--red); }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 199;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(3px);
  -webkit-tap-highlight-color: transparent;
}
.sidebar-overlay.show { display: block; }

/* 背景滚动锁定（sidebar 打开时） */
body.sidebar-open { overflow: hidden; }

/* Main content */
.main-content { flex: 1; overflow-y: auto; min-width: 0; }
.mobile-header { display: none; }

/* ==================== Mobile ==================== */
@media (max-width: 768px) {
  /* app-shell 改为纵向：mobile-header 在顶部，main-content 在下方 */
  .app-shell { flex-direction: column; }

  /* ── Sidebar：固定浮层，从左侧滑入 ── */
  .sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    z-index: 200;
    transform: translateX(-100%);
    width: 240px !important;   /* 稍窄，内容区留更多空间 */
    transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
  }
  .sidebar.open { transform: translateX(0); box-shadow: 8px 0 40px rgba(0,0,0,0.7); }

  /* 移动端始终显示完整文字，忽略 collapsed 状态 */
  .sidebar .sidebar-logo-text { opacity: 1 !important; width: auto !important; }
  .sidebar .sidebar-nav-item  { justify-content: flex-start !important; padding: 11px 14px !important; }
  .sidebar .sidebar-nav-item .label { opacity: 1 !important; width: auto !important; overflow: visible !important; }
  .sidebar .sidebar-nav-item .icon  { width: 22px !important; font-size: 16px !important; }
  .sidebar .sidebar-footer    { padding: 14px !important; }
  .sidebar .sidebar-user      { justify-content: flex-start !important; }
  .sidebar .sidebar-user-info { display: block !important; }
  .sidebar .sidebar-logout    { display: block !important; }
  .sidebar-collapse-btn       { display: none !important; }

  /* 导航项在移动端更高，更容易点 */
  .sidebar-nav-item { min-height: 44px; }

  /* ── 移动端顶部栏 ── */
  /* z-index 202：高于 sidebar(200) 和 overlay(199)，hamburger 始终可点 */
  .mobile-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 16px;
    height: 52px;
    background: var(--dark-900);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 202;
    flex-shrink: 0;
  }

  /* hamburger 按钮：44×44 触控友好，icon 切换动画 */
  .hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: var(--dark-700);
    border: 1px solid var(--dark-600);
    color: var(--text);
    font-size: 17px;
    border-radius: 10px;
    transition: background 0.15s, color 0.15s;
    -webkit-tap-highlight-color: transparent;
    flex-shrink: 0;
    line-height: 1;
  }
  .hamburger:hover, .hamburger:active { background: var(--dark-600); }
  /* 打开状态：高亮 ✕ */
  .hamburger.is-open {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
  }

  .mobile-title { font-size: 15px; font-weight: 700; color: #fff; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  /* ── 内容区通用优化 ── */
  .main-content { overflow-x: hidden; }

  /* page-header：吸顶时 z-index 要低于 mobile-header(202) */
  .page-header { padding: 12px 16px !important; position: sticky; top: 52px; z-index: 8 !important; }
  .page-title  { font-size: 15px !important; }
  .page-desc   { font-size: 12px !important; }

  /* toolbar：按钮换行，间距收紧 */
  .toolbar { padding: 10px 14px !important; gap: 8px !important; flex-wrap: wrap; }
  .toolbar .btn { padding: 7px 12px; font-size: 12px; }
  .toolbar input, .toolbar select { font-size: 13px; }

  /* 数据表格：允许横向滚动 */
  .data-table { min-width: unset; font-size: 12px; }
  .data-table th, .data-table td { padding: 8px 10px; }

  /* 统计卡片 2 列 */
  .stat-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 10px !important; }

  /* 设置页 tabs 换行 */
  .settings-tabs { flex-wrap: wrap; gap: 2px; }
  .settings-tab  { padding: 7px 12px; font-size: 12px; }

  /* ── KOL 详情面板：全屏 ── */
  .kol-panel { width: 100% !important; border-left: none; top: 0; }
  .kol-panel-overlay { display: none !important; }

  /* 模态框在移动端铺满屏幕底部 */
  .modal-overlay { align-items: flex-end; padding: 0; }
  .modal-box { border-radius: 20px 20px 0 0; max-width: 100%; max-height: 90vh; overflow-y: auto; }
}

/* ==================== Page header ==================== */
.page-header { padding: 20px 24px 16px; border-bottom: 1px solid var(--border); background: var(--dark-900); position: sticky; top: 0; z-index: 8; }
.page-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 2px; }
.page-desc { font-size: 13px; color: var(--text-muted); }

/* ==================== KOL Detail Panel ==================== */
.kol-panel {
  position: fixed;
  right: 0; top: 0; bottom: 0;
  width: 380px;
  background: var(--dark-800);
  border-left: 1px solid var(--border-bright);
  z-index: 160;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.kol-panel.open { transform: translateX(0); box-shadow: -6px 0 40px rgba(0,0,0,0.5); }
.kol-panel-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 159;
  background: rgba(0,0,0,0.3);
}
.kol-panel-overlay.show { display: block; }
.panel-header { padding: 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; background: var(--dark-900); position: sticky; top: 0; z-index: 2; }
.panel-header h3 { font-size: 15px; font-weight: 700; color: #fff; }
.panel-close-btn { background: none; border: none; color: var(--text-muted); font-size: 18px; padding: 4px 8px; border-radius: 6px; transition: all 0.15s; }
.panel-close-btn:hover { background: var(--dark-700); color: var(--text); }
.panel-kol-info { padding: 16px; border-bottom: 1px solid var(--border); display: flex; gap: 12px; align-items: flex-start; }
.panel-avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--dark-600); display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--text-dim); overflow: hidden; flex-shrink: 0; }
.panel-avatar img { width: 100%; height: 100%; object-fit: cover; }
.panel-kol-name { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 2px; }
.panel-kol-handle { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.panel-bio { font-size: 13px; color: var(--text-dim); line-height: 1.5; }
.panel-stats { display: flex; gap: 16px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.panel-stat { text-align: center; }
.panel-stat-val { font-size: 16px; font-weight: 700; color: #fff; }
.panel-stat-lbl { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.panel-section { padding: 16px; border-bottom: 1px solid var(--border); }
.panel-section-title { font-size: 11px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px; }
.panel-tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.panel-tag-item { display: flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 9999px; font-size: 12px; background: var(--dark-700); border: 1px solid var(--dark-600); color: var(--text-dim); cursor: pointer; transition: all 0.15s; user-select: none; }
.panel-tag-item:hover { border-color: var(--dark-500); }
.panel-tag-item.selected { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.panel-tag-item input { display: none; }
.notify-row { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; }
.notify-row:not(:last-child) { border-bottom: 1px solid var(--border); }
.notify-label { font-size: 13px; color: var(--text); }
.notify-hint { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.panel-footer { padding: 16px; display: flex; gap: 8px; flex-wrap: wrap; flex-shrink: 0; border-top: 1px solid var(--border); background: var(--dark-900); position: sticky; bottom: 0; }
@media (max-width: 768px) {
  .kol-panel { width: 100%; border-left: none; }
}

/* ==================== Cards ==================== */
.card { background: var(--dark-800); border: 1px solid var(--border-bright); border-radius: 12px; padding: 16px; }

/* ==================== Buttons ==================== */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 8px; font-size: 13px; font-weight: 500; border: none; transition: all 0.15s; cursor: pointer; white-space: nowrap; }
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: #38e5f9; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary { background: var(--dark-700); color: var(--text); border: 1px solid var(--dark-600); }
.btn-secondary:hover { background: var(--dark-600); }
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-danger { background: rgba(239,68,68,0.12); color: var(--red); border: 1px solid rgba(239,68,68,0.25); }
.btn-danger:hover { background: rgba(239,68,68,0.2); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; border-radius: 6px; }

/* ==================== Badge ==================== */
.badge { display: inline-block; padding: 2px 8px; border-radius: 9999px; font-size: 11px; font-weight: 600; }
.badge-cyan { background: var(--accent-dim); color: var(--accent); }
.badge-green { background: rgba(34,197,94,0.15); color: var(--green); }
.badge-yellow { background: rgba(251,191,36,0.15); color: var(--yellow); }
.badge-red { background: rgba(239,68,68,0.15); color: var(--red); }
.badge-purple { background: rgba(168,85,247,0.15); color: var(--purple); }

/* ==================== Tags ==================== */
.tag { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 9999px; font-size: 12px; background: var(--dark-700); border: 1px solid var(--dark-600); color: var(--text-dim); cursor: pointer; transition: all 0.15s; }
.tag:hover { border-color: var(--dark-500); color: var(--text); }
.tag.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

/* ==================== Form ==================== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.form-input { width: 100%; }
.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ==================== Empty / Loading ==================== */
.empty-state { text-align: center; padding: 48px 24px; color: var(--text-muted); }
.empty-state .icon { font-size: 40px; margin-bottom: 12px; opacity: 0.6; }
.empty-state p { font-size: 14px; }
.loading-state { text-align: center; padding: 48px 24px; color: var(--text-muted); font-size: 14px; }

/* ==================== Toggle ==================== */
.toggle { position: relative; width: 40px; height: 22px; display: inline-block; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: var(--dark-600); border-radius: 9999px; cursor: pointer; transition: 0.2s; }
.toggle-slider:before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; bottom: 3px; background: white; border-radius: 50%; transition: 0.2s; }
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider:before { transform: translateX(18px); }

/* ==================== Table ==================== */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { text-align: left; font-size: 12px; color: var(--text-muted); font-weight: 500; padding: 8px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--text); vertical-align: middle; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.data-table .clickable-row { cursor: pointer; }

/* ==================== Modal ==================== */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 300; padding: 24px; backdrop-filter: blur(4px); }
.modal-box { background: var(--dark-800); border: 1px solid var(--border-bright); border-radius: 16px; padding: 24px; width: 100%; max-width: 480px; animation: modalIn 0.2s; }
@keyframes modalIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.modal-box h3 { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

/* ==================== Scrollbar ==================== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--dark-600); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--dark-500); }

/* ==================== Utility ==================== */
.flex { display: flex; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.text-accent { color: var(--accent); }
.hidden { display: none !important; }
.w-full { width: 100%; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ==================== Stat cards ==================== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card { background: var(--dark-800); border: 1px solid var(--border-bright); border-radius: 12px; padding: 18px; }
.stat-card .label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.stat-card .value { font-size: 26px; font-weight: 800; color: #fff; }
.stat-card .sub { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ==================== Pro badge ==================== */
.pro-badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 6px; font-size: 11px; background: rgba(251,191,36,0.15); color: var(--yellow); border: 1px solid rgba(251,191,36,0.25); }

/* ==================== Filter bar / Toolbar ==================== */
.toolbar { padding: 14px 24px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; border-bottom: 1px solid var(--border); background: var(--dark-900); }
.filter-btn { padding: 5px 12px; border-radius: 9999px; font-size: 12px; border: 1px solid var(--dark-600); background: var(--dark-800); color: var(--text-dim); cursor: pointer; transition: all 0.15s; }
.filter-btn:hover { border-color: var(--dark-500); color: var(--text); }
.filter-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

/* ==================== Settings ==================== */
.settings-section { background: var(--dark-800); border: 1px solid var(--border-bright); border-radius: 12px; padding: 20px; margin-bottom: 16px; }
.settings-section h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.setting-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); gap: 16px; }
.setting-row:last-child { border-bottom: none; }
.setting-label { font-size: 14px; color: var(--text); }
.setting-hint { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.settings-tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 1px solid var(--border); padding-bottom: 0; overflow-x: auto; }
.settings-tab { padding: 8px 16px; font-size: 13px; cursor: pointer; color: var(--text-dim); border: none; background: transparent; transition: all 0.15s; border-bottom: 2px solid transparent; white-space: nowrap; }
.settings-tab:hover { color: var(--text); }
.settings-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ==================== Pair code ==================== */
.pair-code-display { font-size: 32px; font-weight: 800; color: var(--accent); letter-spacing: 8px; text-align: center; padding: 16px; background: var(--dark-700); border-radius: 8px; margin: 12px 0; font-family: monospace; }

/* ==================== Progress bar ==================== */
.progress-bar { height: 6px; background: var(--dark-700); border-radius: 3px; overflow: hidden; margin-bottom: 12px; }
.progress-fill { height: 100%; border-radius: 3px; transition: width 0.3s; }