/* ===== Kdaohang - 主样式文件 ===== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Space+Grotesk:wght@400;600;700&display=swap');

/* ===== 主题变量 ===== */
:root {
  --font-body: 'Noto Sans SC', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  --sidebar-width: 240px;
  --header-height: 80px;
  --border-radius: 10px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.15);
}

/* 浅色主题（默认） */
[data-theme="light"] {
  --bg-primary: #f8f9fc;
  --bg-secondary: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f1f3f8;
  --text-primary: #1a1d2e;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-color: #e5e7eb;
  --accent: #6366f1;
  --accent-light: #eef2ff;
  --accent-hover: #4f46e5;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
}

/* 深色主题 */
[data-theme="dark"] {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d2e;
  --bg-sidebar: #13151f;
  --bg-card: #1e2133;
  --bg-hover: #252840;
  --text-primary: #e8eaf0;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-color: #2d3148;
  --accent: #818cf8;
  --accent-light: #1e2233;
  --accent-hover: #6366f1;
  --success: #34d399;
  --warning: #fbbf24;
  --error: #f87171;
}

/* 蓝色主题 */
[data-theme="blue"] {
  --bg-primary: #f0f4ff;
  --bg-secondary: #ffffff;
  --bg-sidebar: #1e3a8a;
  --bg-card: #ffffff;
  --bg-hover: #dbeafe;
  --text-primary: #1e3a8a;
  --text-secondary: #3b82f6;
  --text-muted: #93c5fd;
  --border-color: #bfdbfe;
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --accent-hover: #1d4ed8;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
}

/* 绿色主题 */
[data-theme="green"] {
  --bg-primary: #f0fdf4;
  --bg-secondary: #ffffff;
  --bg-sidebar: #14532d;
  --bg-card: #ffffff;
  --bg-hover: #dcfce7;
  --text-primary: #14532d;
  --text-secondary: #16a34a;
  --text-muted: #86efac;
  --border-color: #bbf7d0;
  --accent: #16a34a;
  --accent-light: #dcfce7;
  --accent-hover: #15803d;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
}

/* 暗紫主题 */
[data-theme="purple"] {
  --bg-primary: #0d0d1a;
  --bg-secondary: #13102b;
  --bg-sidebar: #0a0815;
  --bg-card: #1a163a;
  --bg-hover: #221e4a;
  --text-primary: #e8e5ff;
  --text-secondary: #a78bfa;
  --text-muted: #6d6a9e;
  --border-color: #2d2660;
  --accent: #8b5cf6;
  --accent-light: #1e1a40;
  --accent-hover: #7c3aed;
  --success: #34d399;
  --warning: #fbbf24;
  --error: #f87171;
}

/* ===== 全局重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }
img { max-width: 100%; }
ul, ol { list-style: none; }

/* ===== 布局 ===== */
#app { display: flex; flex-direction: column; min-height: 100vh; }

/* 顶部导航栏 */
.header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex; align-items: center;
  padding: 0 20px;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.header-logo {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--accent);
  flex-shrink: 0;
  text-decoration: none;
}
.header-logo img { width: 48px; height: 48px; border-radius: 12px; object-fit: cover; }
.logo-placeholder {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 22px; font-weight: 700;
}

/* 搜索框 */
.search-wrap {
  flex: 1; max-width: 520px; margin: 0 auto;
  position: relative;
}
.search-input {
  width: 100%; padding: 12px 18px 12px 44px;
  border: 1.5px solid var(--border-color);
  border-radius: 26px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition);
  font-family: var(--font-body);
}
.search-input:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.search-icon {
  position: absolute; left: 15px; top: 50%; transform: translateY(-50%);
  color: var(--text-muted); font-size: 16px; pointer-events: none;
}

/* 顶栏操作区 */
.header-actions {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}
.btn-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
  font-size: 16px;
  position: relative;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--accent); }

.btn-admin {
  padding: 7px 14px; border-radius: 8px;
  background: var(--accent); color: white;
  font-size: 0.82rem; font-weight: 600;
  transition: var(--transition);
  display: flex; align-items: center; gap: 5px;
}
.btn-admin:hover { background: var(--accent-hover); transform: translateY(-1px); }

/* 汉堡菜单 */
.btn-menu {
  display: none; flex-direction: column; gap: 4px;
  width: 36px; height: 36px; border-radius: 8px;
  background: transparent; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}
.btn-menu:hover { background: var(--bg-hover); }
.btn-menu span {
  display: block; width: 18px; height: 2px;
  background: currentColor; border-radius: 2px;
  transition: var(--transition);
}

/* ===== 主体区域 ===== */
.main-wrap { display: flex; flex: 1; }

/* ===== 侧边栏 ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  position: sticky; top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto; overflow-x: hidden;
  flex-shrink: 0;
  transition: var(--transition);
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

.sidebar-inner { padding: 12px 0 40px; }

.sidebar-section-label {
  padding: 14px 16px 6px;
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-toggle {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.sidebar-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* 侧边栏折叠状态 */
.sidebar.collapsed {
  width: 60px;
}

.sidebar.collapsed .sidebar-label-text,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .nav-count,
.sidebar.collapsed .sidebar-footer-label,
.sidebar.collapsed .theme-grid {
  display: none;
}

.sidebar.collapsed .sidebar-section-label {
  justify-content: center;
  padding: 14px 8px 6px;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 12px 8px;
}

.sidebar.collapsed .nav-item .nav-icon {
  width: auto;
  margin: 0;
}

.sidebar.collapsed .sidebar-footer {
  padding: 12px 8px;
  text-align: center;
}

.sidebar.collapsed .sidebar-toggle span {
  transform: rotate(180deg);
}

.sidebar.collapsed .nav-item {
  position: relative;
}

.sidebar.collapsed .nav-item::after {
  content: attr(data-title);
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-left: 10px;
  padding: 6px 10px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 6px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
}

.sidebar.collapsed .nav-item:hover::after {
  opacity: 1;
  visibility: visible;
}

.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 16px;
  border-radius: 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: var(--transition);
  cursor: pointer;
  border-left: 3px solid transparent;
  position: relative;
}
.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.nav-item.active {
  background: var(--accent-light);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}
.nav-item .nav-icon { font-size: 17px; flex-shrink: 0; width: 22px; text-align: center; }
.nav-item .nav-count {
  margin-left: auto; font-size: 0.7rem;
  background: var(--bg-hover); color: var(--text-muted);
  padding: 1px 6px; border-radius: 10px;
}
.nav-item.active .nav-count { background: var(--accent); color: white; }

/* 侧栏主题切换 */
.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
}
.theme-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px;
  margin-top: 8px;
}
.theme-dot {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer; transition: var(--transition);
  position: relative;
}
.theme-dot:hover { transform: scale(1.2); }
.theme-dot.active { border-color: var(--text-primary); }
.theme-dot[data-theme="light"] { background: linear-gradient(135deg, #f8f9fc 50%, #6366f1 50%); }
.theme-dot[data-theme="dark"] { background: linear-gradient(135deg, #1a1d2e 50%, #818cf8 50%); }
.theme-dot[data-theme="blue"] { background: linear-gradient(135deg, #1e3a8a 50%, #3b82f6 50%); }
.theme-dot[data-theme="green"] { background: linear-gradient(135deg, #14532d 50%, #16a34a 50%); }
.theme-dot[data-theme="purple"] { background: linear-gradient(135deg, #0a0815 50%, #8b5cf6 50%); }

/* ===== 内容区 ===== */
.content {
  flex: 1; min-width: 0;
  padding: 28px;
  background: var(--bg-primary);
}

/* 页头 */
.page-header {
  margin-bottom: 24px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.page-title { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); }
.page-subtitle { font-size: 0.875rem; color: var(--text-secondary); margin-top: 2px; }
.page-title-icon { font-size: 1.8rem; margin-right: 8px; }

/* 分类过滤器 */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 22px;
}
.filter-chip {
  padding: 5px 14px; border-radius: 20px;
  font-size: 0.8rem; font-weight: 500;
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer; transition: var(--transition);
}
.filter-chip:hover { border-color: var(--accent); color: var(--accent); }
.filter-chip.active {
  background: var(--accent); border-color: var(--accent);
  color: white;
}

/* ===== 工具卡片网格 ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 16px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  display: flex; flex-direction: column;
  gap: 10px;
  overflow: hidden;
}
.tool-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--accent); opacity: 0;
  transition: var(--transition);
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.tool-card:hover::before { opacity: 1; }

.card-top {
  display: flex; align-items: flex-start; gap: 12px;
}
.card-logo {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--bg-hover);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; flex-shrink: 0;
  border: 1px solid var(--border-color);
}
.card-logo img { width: 100%; height: 100%; object-fit: cover; }
.card-logo-fallback { font-size: 22px; }

.card-info { flex: 1; min-width: 0; }
.card-name {
  font-weight: 700; font-size: 0.95rem;
  color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-subcat {
  font-size: 0.75rem; color: var(--text-muted); margin-top: 2px;
}

.badge {
  display: inline-block; padding: 2px 8px;
  border-radius: 4px; font-size: 0.68rem; font-weight: 700;
  color: white; line-height: 1.6; flex-shrink: 0;
}

.card-desc {
  font-size: 0.8rem; color: var(--text-secondary);
  line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-tags {
  display: flex; flex-wrap: wrap; gap: 5px;
}
.tag {
  padding: 2px 8px; border-radius: 4px;
  font-size: 0.7rem; font-weight: 500;
  background: var(--bg-hover); color: var(--text-secondary);
}

.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 8px; border-top: 1px solid var(--border-color);
}
.card-rating { display: flex; align-items: center; gap: 4px; font-size: 0.78rem; color: var(--warning); }
.card-rating span { color: var(--text-muted); font-size: 0.75rem; }
.card-pricing { font-size: 0.75rem; color: var(--success); font-weight: 600; }

.btn-visit {
  padding: 6px 14px; border-radius: 6px;
  background: var(--accent-light); color: var(--accent);
  font-size: 0.78rem; font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--accent);
}
.btn-visit:hover { background: var(--accent); color: white; }

/* ===== 工具详情页 ===== */
.detail-page {
  max-width: 900px; margin: 0 auto;
}
.detail-back {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 8px;
  color: var(--text-secondary); font-size: 0.875rem;
  background: var(--bg-card); border: 1px solid var(--border-color);
  margin-bottom: 20px; transition: var(--transition); cursor: pointer;
}
.detail-back:hover { color: var(--accent); border-color: var(--accent); }

.detail-hero {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 28px;
  margin-bottom: 20px;
  display: flex; gap: 24px; align-items: flex-start;
  position: relative; overflow: hidden;
}
.detail-hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
}
.detail-logo {
  width: 80px; height: 80px; border-radius: 16px;
  background: var(--bg-hover);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; flex-shrink: 0;
  border: 2px solid var(--border-color);
}
.detail-logo img { width: 100%; height: 100%; object-fit: cover; }

.detail-meta { flex: 1; }
.detail-name { font-size: 1.8rem; font-weight: 800; margin-bottom: 6px; }
.detail-cat-badge {
  display: inline-block; padding: 3px 10px;
  border-radius: 6px; font-size: 0.75rem; font-weight: 600;
  background: var(--accent-light); color: var(--accent);
  margin-bottom: 10px;
}
.detail-desc { color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; }
.detail-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.btn-primary {
  padding: 10px 22px; border-radius: 8px;
  background: var(--accent); color: white;
  font-size: 0.9rem; font-weight: 700;
  transition: var(--transition);
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-secondary {
  padding: 10px 22px; border-radius: 8px;
  background: transparent; color: var(--text-secondary);
  font-size: 0.9rem; font-weight: 600;
  border: 1.5px solid var(--border-color);
  transition: var(--transition);
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* 详情卡片 */
.detail-grid {
  display: grid; grid-template-columns: 2fr 1fr; gap: 16px;
  margin-bottom: 20px;
}
.detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 22px;
}
.detail-card-title {
  font-size: 1rem; font-weight: 700; margin-bottom: 14px;
  padding-bottom: 10px; border-bottom: 1px solid var(--border-color);
  display: flex; align-items: center; gap: 8px; color: var(--text-primary);
}
.feature-list { display: flex; flex-direction: column; gap: 8px; }
.feature-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.875rem; color: var(--text-secondary);
}
.feature-item::before {
  content: '✓'; color: var(--success);
  font-weight: 700; flex-shrink: 0;
}

.info-rows { display: flex; flex-direction: column; gap: 12px; }
.info-row { display: flex; align-items: center; justify-content: space-between; font-size: 0.875rem; }
.info-label { color: var(--text-muted); }
.info-value { color: var(--text-primary); font-weight: 600; }

/* 星级评分 */
.stars { display: flex; gap: 2px; }
.star { color: #e5e7eb; font-size: 14px; }
.star.filled { color: var(--warning); }

/* 广告位 */
.ad-slot {
  background: var(--bg-card);
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius);
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 0.8rem;
  min-height: 100px;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.ad-slot-label {
  position: absolute; top: 8px; left: 12px;
  font-size: 0.65rem; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--text-muted);
}
/* 横幅广告 */
.ad-banner { min-height: 90px; }
/* 矩形广告 */
.ad-rect { min-height: 250px; }

/* 相关推荐 */
.related-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 14px;
  cursor: pointer; transition: var(--transition);
  display: flex; align-items: center; gap: 12px;
}
.related-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.related-logo {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--bg-hover); overflow: hidden; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-color);
}
.related-logo img { width: 100%; height: 100%; object-fit: cover; }
.related-name { font-size: 0.875rem; font-weight: 600; }
.related-cat { font-size: 0.72rem; color: var(--text-muted); }

/* ===== 搜索结果 ===== */
.search-results-info {
  font-size: 0.875rem; color: var(--text-secondary);
  margin-bottom: 16px;
  padding: 12px 16px;
  background: var(--accent-light); border-radius: 8px;
  border-left: 3px solid var(--accent);
}

/* ===== 后台管理 ===== */
.admin-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.6); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.admin-overlay.open { opacity: 1; pointer-events: all; }

.admin-modal {
  background: var(--bg-secondary);
  border-radius: 16px; width: 100%; max-width: 680px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95); transition: transform 0.3s ease;
}
.admin-overlay.open .admin-modal { transform: scale(1); }

.admin-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: space-between;
}
.admin-title { font-size: 1.15rem; font-weight: 700; }
.btn-close {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--bg-hover); color: var(--text-secondary);
  font-size: 18px; display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.btn-close:hover { background: var(--error); color: white; }

.admin-tabs {
  display: flex; border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
}
.admin-tab {
  padding: 12px 16px; font-size: 0.875rem; font-weight: 600;
  color: var(--text-muted); border-bottom: 2px solid transparent;
  cursor: pointer; transition: var(--transition);
}
.admin-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.admin-body { padding: 20px 24px; }

.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: var(--text-secondary); margin-bottom: 6px;
}
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 9px 14px;
  border: 1.5px solid var(--border-color);
  border-radius: 8px; background: var(--bg-primary);
  color: var(--text-primary); font-size: 0.875rem;
  font-family: var(--font-body); transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent); outline: none;
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.btn-submit {
  padding: 10px 24px; border-radius: 8px;
  background: var(--accent); color: white;
  font-size: 0.9rem; font-weight: 700;
  width: 100%; transition: var(--transition); margin-top: 4px;
}
.btn-submit:hover { background: var(--accent-hover); }

/* 工具列表管理 */
.admin-tool-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.admin-tool-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  background: var(--bg-primary); border: 1px solid var(--border-color);
}
.admin-tool-item img {
  width: 28px; height: 28px; border-radius: 6px;
  border: 1px solid var(--border-color);
}
.admin-tool-name { flex: 1; font-size: 0.875rem; font-weight: 600; }
.admin-tool-cat { font-size: 0.75rem; color: var(--text-muted); }
.btn-delete {
  padding: 4px 10px; border-radius: 6px;
  background: transparent; color: var(--error);
  border: 1px solid var(--error); font-size: 0.75rem;
  transition: var(--transition);
}
.btn-delete:hover { background: var(--error); color: white; }

/* 网站设置 */
.logo-upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 10px; padding: 20px;
  text-align: center; cursor: pointer;
  transition: var(--transition);
}
.logo-upload-area:hover { border-color: var(--accent); background: var(--accent-light); }
.logo-preview {
  width: 60px; height: 60px; border-radius: 12px;
  object-fit: cover; margin: 0 auto 8px; display: block;
}
.logo-preview-placeholder { font-size: 36px; margin-bottom: 8px; }

/* ===== 通知 toast ===== */
.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 9999; pointer-events: none;
}
.toast {
  padding: 12px 18px; border-radius: 10px;
  background: var(--bg-secondary); color: var(--text-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem; font-weight: 500;
  display: flex; align-items: center; gap: 8px;
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  pointer-events: none; max-width: 320px;
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--error); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; transform: translateX(20px); } }

/* ===== 空状态 ===== */
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 48px; margin-bottom: 12px; }
.empty-state-text { font-size: 1rem; margin-bottom: 4px; }
.empty-state-sub { font-size: 0.875rem; }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 20px 28px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  color: var(--text-muted); font-size: 0.8rem;
}
.footer a { color: var(--text-secondary); }
.footer a:hover { color: var(--accent); }

/* ===== 侧栏遮罩（移动端） ===== */
.sidebar-overlay {
  display: none; position: fixed; inset: 0; z-index: 90;
  background: rgba(0,0,0,.5);
}

/* ===== 动画 ===== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn 0.3s ease; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --sidebar-width: 260px; }
  .btn-menu { display: flex; }

  .sidebar {
    position: fixed; top: var(--header-height); left: 0;
    height: calc(100vh - var(--header-height));
    z-index: 95; transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
    width: var(--sidebar-width);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar.collapsed { width: var(--sidebar-width); }
  .sidebar.collapsed .sidebar-label-text,
  .sidebar.collapsed .nav-label,
  .sidebar.collapsed .nav-count,
  .sidebar.collapsed .sidebar-footer-label,
  .sidebar.collapsed .theme-grid { display: block; }
  .sidebar.collapsed .nav-item { justify-content: flex-start; padding: 9px 16px; }
  .sidebar-overlay.open { display: block; }

  .content { padding: 16px; }
  .tools-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }

  .detail-hero { flex-direction: column; }
  .detail-logo { width: 60px; height: 60px; }
  .detail-name { font-size: 1.4rem; }

  .search-wrap { max-width: none; }
  .header-logo span { display: none; }

  .form-row { grid-template-columns: 1fr; }
  .admin-modal { max-height: 95vh; border-radius: 12px; }

  .footer { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .related-grid { grid-template-columns: 1fr; }
}

/* 加载中 */
.skeleton {
  background: linear-gradient(90deg, var(--bg-hover) 25%, var(--bg-card) 50%, var(--bg-hover) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }