/* ===== AI工具导航 ===== */

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --primary:#2299FF;--primary-light:#E8F4FF;--primary-dark:#1A7ACC;
  --bg:#F8FAFC;--sidebar-bg:#FFFFFF;--card-bg:#FFFFFF;
  --text:#1E293B;--text-secondary:#64748B;--text-muted:#94A3B8;
  --border:#E2E8F0;--border-light:#F1F5F9;
  --tag-bg:#F1F5F9;--tag-text:#475569;--tag-border:#CBD5E1;
  --featured-bg:#FEF3C7;--featured-border:#F59E0B;--featured-text:#92400E;
  --shadow:0 1px 3px rgba(0,0,0,.1);
  --shadow-md:0 4px 12px rgba(0,0,0,.08);
  --radius:12px;--radius-sm:8px;--radius-xs:6px;
  --sidebar-width:240px;
  --transition:.2s ease;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;display:flex;min-height:100vh;
}

/* ===== 侧边栏 ===== */
.sidebar{
  width:var(--sidebar-width);min-width:var(--sidebar-width);
  background:var(--sidebar-bg);border-right:1px solid var(--border);
  display:flex;flex-direction:column;height:100vh;position:sticky;top:0;z-index:100;
  overflow-y:auto;overflow-x:hidden;transition:width .3s,min-width .3s;
}
.sidebar.collapsed{width:0;min-width:0;border-right:none;overflow:hidden}
.sidebar-header{padding:24px 20px;border-bottom:1px solid var(--border);position:relative}
.sidebar-logo{font-size:40px;line-height:1}
.sidebar-logo img{width:40px;height:40px;object-fit:cover;border-radius:8px}
.sidebar-title{font-size:18px;font-weight:700;margin-top:8px;color:var(--text)}
.sidebar-subtitle{font-size:12px;color:var(--text-secondary);margin-top:2px}
.sidebar-collapse-btn{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  background:var(--bg);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;
  font-size:14px;padding:6px 8px;border-radius:var(--radius-xs);
  transition:all var(--transition);line-height:1;
}
.sidebar-collapse-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light);box-shadow:0 2px 6px rgba(34,153,255,.15)}
.sidebar.collapsed + .main{padding-left:56px}
.sidebar-nav{padding:12px;flex:1;overflow-y:auto}
.sidebar-footer{padding:12px;border-top:1px solid var(--border)}
.contact-btn{
  display:flex;align-items:center;justify-content:center;gap:4px;
  width:100%;padding:6px 10px;border-radius:var(--radius-xs);
  background:var(--primary);color:#FFF;border:none;
  font-size:12px;font-weight:600;cursor:pointer;transition:all var(--transition);
  font-family:inherit;
}
.contact-btn:hover{background:var(--primary-dark);box-shadow:0 2px 8px rgba(34,153,255,.3)}
.nav-item{
  display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--radius-sm);
  cursor:pointer;transition:all var(--transition);font-size:14px;color:var(--text-secondary);
  text-decoration:none;margin-bottom:2px;
}
.nav-item:hover{background:var(--primary-light);color:var(--primary)}
.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}
.nav-icon{font-size:18px;width:24px;text-align:center}
.nav-label{flex:1}
.nav-badge{font-size:14px;color:#10B981;background:#ECFDF5;padding:2px 10px;border-radius:10px;font-weight:700}

/* ===== 主内容区 ===== */
.main{flex:1;overflow-y:auto;height:100vh;min-width:0;display:flex;flex-direction:column;padding-bottom:60px}
#normalContent{flex:1}
.content{padding:32px 40px 80px;max-width:1100px}

/* ===== 加载 ===== */
.loading{text-align:center;padding:80px 20px;color:var(--text-muted)}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== 页面标题 ===== */
.page-header{margin-bottom:24px}
.page-title{display:flex;align-items:center;gap:8px;font-size:24px;font-weight:700;color:var(--text)}
.page-desc{font-size:14px;color:var(--text-secondary);margin-top:6px}

/* ===== 工具卡片网格 ===== */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(420px,1fr));gap:14px}
.tool-card{
  display:flex;align-items:flex-start;gap:16px;padding:18px 20px;min-height:130px;
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  cursor:pointer;transition:all var(--transition);box-shadow:0 1px 2px rgba(0,0,0,.04);
}
.tool-card:hover{border-color:#99D1FF;box-shadow:0 2px 12px rgba(34,153,255,.1);transform:translateY(-1px)}
.tool-card.featured{border-left:3px solid var(--featured-border)}
.tool-card.featured:hover{border-color:#F59E0B}
.tool-logo{font-size:32px;width:52px;text-align:center;flex-shrink:0}
.tool-logo img{width:48px;height:48px;object-fit:cover;border-radius:8px}
.tool-body{flex:1;min-width:0}
.tool-name-row{display:flex;align-items:center;gap:6px;margin-bottom:4px}
.tool-name{font-size:16px;font-weight:600;color:var(--text)}
.featured-badge{font-size:10px;background:var(--featured-border);color:#FFF;padding:1px 6px;border-radius:3px}
.tool-url{font-size:12px;color:var(--text-muted);margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tool-desc{font-size:13px;color:var(--text-secondary);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tool-tags{display:flex;gap:4px;flex-wrap:wrap}
.tag{font-size:12px;font-weight:500;background:var(--tag-bg);color:var(--tag-text);padding:3px 10px;border-radius:6px;border:1px solid var(--tag-border);transition:all .2s}.tag:hover{background:#E2E8F0;color:#334155}
.tool-counts-bar{display:flex;gap:12px;margin-top:8px;min-height:18px}
.count-item{font-size:12px;color:var(--text-secondary)}
.tool-arrow{font-size:20px;color:var(--text-muted);flex-shrink:0}

/* ===== 工具详情页 ===== */
.detail-body-padding{padding:24px 40px 60px}
.detail-header{display:flex;gap:20px;margin-bottom:20px}
.detail-logo{font-size:48px;flex-shrink:0}
.detail-logo img{width:64px;height:64px;object-fit:cover;border-radius:10px}
.detail-info{flex:1;min-width:0}
.detail-name-row{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.detail-name{font-size:22px;font-weight:700;color:var(--text)}
.detail-url{font-size:13px;color:var(--text-muted);margin-bottom:8px;word-break:break-all}
.detail-desc{font-size:14px;color:var(--text-secondary);margin-bottom:10px}
.detail-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.btn-visit{
  display:inline-block;padding:8px 24px;background:var(--primary);color:#FFF;
  border:none;border-radius:var(--radius-xs);font-size:14px;font-weight:600;
  cursor:pointer;transition:background var(--transition);font-family:inherit;text-decoration:none;
}
.btn-visit:hover{background:var(--primary-dark)}
.detail-intro{font-size:14px;color:var(--text-secondary);line-height:1.8;margin-bottom:20px;word-break:break-word}

/* ===== 内容区块 ===== */
.content-section{
  background:#FAFBFC;border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:16px 20px;margin-bottom:16px;
}
.content-section-title{font-size:15px;font-weight:600;margin-bottom:12px;color:var(--text)}
.content-item{
  display:flex;align-items:center;gap:10px;padding:8px 0;
  border-bottom:1px solid var(--border-light);cursor:pointer;transition:all var(--transition);font-size:14px;
}
.content-item:last-child{border-bottom:none;padding-bottom:0}
.content-item:first-child{padding-top:0}
.content-item:hover{color:var(--primary)}
.content-item-date{font-size:12px;color:var(--text-muted);white-space:nowrap;min-width:80px}
.content-item-title{font-weight:500;color:var(--text);flex:1}
.content-item:hover .content-item-title{color:var(--primary)}
.content-item-summary{font-size:12px;color:var(--text-muted)}
.content-item-arrow{color:var(--text-muted);font-size:14px}
.content-item-disabled{opacity:.4;cursor:default;pointer-events:none}
.content-item-disabled:hover{color:inherit}
.content-item-disabled:hover .content-item-title{color:var(--text)}
/* 文章条目虚线标识 */
.article-item{border:1px dashed #A5B4FC;border-radius:var(--radius-sm);padding:8px 12px;margin-bottom:6px}
.article-item:hover{border-color:var(--primary);background:var(--primary-light)}
.article-badge{
  font-size:10px;background:var(--primary-light);color:var(--primary);
  padding:1px 6px;border-radius:3px;white-space:nowrap;font-weight:500;
}

/* ===== 文章弹窗 ===== */
.article-overlay{display:none;position:fixed;inset:0;z-index:200}
.article-overlay.show{display:block}
.article-overlay-bg{position:absolute;inset:0;background:rgba(0,0,0,.4)}
.article-panel{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:min(800px,90vw);max-height:80vh;background:#FFF;
  border-radius:var(--radius);box-shadow:0 16px 48px rgba(0,0,0,.2);
  display:flex;flex-direction:column;overflow:hidden;
}
.article-panel-header{padding:20px 24px 16px;border-bottom:1px solid var(--border);position:relative}
.article-panel-close{
  position:absolute;right:16px;top:16px;
  background:none;border:none;font-size:18px;color:var(--text-muted);cursor:pointer;
  padding:4px 8px;border-radius:4px;
}
.article-panel-close:hover{color:var(--text);background:var(--bg)}
.article-panel-title{font-size:18px;font-weight:700;padding-right:40px}
.article-panel-meta{font-size:12px;color:var(--text-muted);margin-top:4px}
.article-panel-body{padding:20px 24px 24px;overflow-y:auto;font-size:14px;line-height:1.8;color:var(--text-secondary)}
.article-panel-body p{margin-bottom:12px}
.article-panel-body h2,.article-panel-body h3{margin:20px 0 10px;color:var(--text)}

/* ===== 联系我们面板 ===== */
.contact-panel{width:min(420px,90vw)}
.contact-item{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--border-light)}
.contact-item:last-child{border-bottom:none}
.contact-icon{font-size:32px;width:48px;text-align:center;flex-shrink:0}
.contact-info{flex:1;min-width:0}
.contact-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px}
.contact-value{font-size:13px;color:var(--text-secondary);word-break:break-all}
.contact-hint{font-size:11px;color:var(--text-muted);margin-top:2px}
.contact-action{
  display:inline-flex;align-items:center;gap:4px;padding:6px 14px;
  border:1px solid var(--border);border-radius:14px;background:#fff;
  color:var(--text-secondary);font-size:12px;cursor:pointer;
  transition:all var(--transition);font-family:inherit;white-space:nowrap;
}
.contact-action:hover{border-color:var(--primary);color:var(--primary)}
.contact-action.copied{background:#DCFCE7;border-color:#86EFAC;color:#16A34A}
.contact-qr{text-align:center;padding:8px 0}
.contact-qr img{width:180px;height:180px;object-fit:contain;border-radius:var(--radius-sm);border:1px solid var(--border)}
.contact-qr-placeholder{width:180px;height:180px;margin:0 auto;display:flex;align-items:center;justify-content:center;background:var(--bg);border-radius:var(--radius-sm);border:1px dashed var(--border);color:var(--text-muted);font-size:13px}

/* ===== 同类工具条 ===== */
.peer-tools-bar{
  position:fixed;bottom:0;left:var(--sidebar-width);right:0;z-index:50;
  display:flex;align-items:center;gap:12px;padding:16px 24px;
  background:var(--sidebar-bg);border-top:1px solid var(--border);
  overflow-x:auto;
}
.peer-back-btn{
  background:linear-gradient(135deg,#2299FF,#40AAFF);color:#FFF;border:none;
  padding:8px 18px;border-radius:16px;
  cursor:pointer;font-size:13px;white-space:nowrap;font-family:inherit;font-weight:600;
  transition:all .2s;box-shadow:0 2px 10px rgba(34,153,255,.3);
}
.peer-back-btn:hover{background:linear-gradient(135deg,#1A7ACC,#2299FF);box-shadow:0 4px 16px rgba(34,153,255,.45);transform:translateY(-1px)}
.peer-divider{width:1px;height:24px;background:var(--border);flex-shrink:0}
.peer-tool-chip{
  display:flex;align-items:center;gap:4px;padding:8px 16px;
  border:1px solid var(--border);border-radius:16px;
  cursor:pointer;white-space:nowrap;font-size:13px;flex-shrink:0;transition:all var(--transition);
}
.peer-tool-chip:hover{border-color:var(--primary);background:var(--primary-light)}
.peer-tool-chip.current{background:var(--primary);color:#FFF;border-color:var(--primary)}
.peer-icon{font-size:14px}
.peer-name{max-width:120px;overflow:hidden;text-overflow:ellipsis}

/* ===== 空状态 ===== */
.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}
.empty-icon{font-size:48px;margin-bottom:12px}
.empty-text{font-size:15px;margin-bottom:20px}
.empty-action{
  display:inline-block;padding:8px 24px;border:1px solid var(--border);
  border-radius:var(--radius-sm);background:#FFF;color:var(--text);
  font-size:14px;cursor:pointer;transition:all var(--transition);font-family:inherit;
}
.empty-action:hover{border-color:var(--primary);color:var(--primary)}
.empty-countdown{font-size:13px;color:var(--text-muted);margin-bottom:16px;min-height:20px}

/* ===== 页脚 ===== */
.site-footer{text-align:center;padding:16px 20px;border-top:1px solid var(--border);margin-top:auto}
.site-footer a{color:var(--text-muted);font-size:12px;text-decoration:none;margin:0 8px}
.site-footer a:hover{color:var(--primary)}

/* ===== 移动端 ===== */
.menu-toggle{display:none;position:fixed;top:100px;left:12px;z-index:250;width:40px;height:40px;border-radius:var(--radius-sm);background:var(--primary);color:#FFF;border:none;font-size:20px;cursor:pointer;box-shadow:var(--shadow-md)}
.overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:99}
.overlay.show{display:block}
.floating-expand-btn{display:none;position:fixed;top:12px;left:12px;z-index:200;width:40px;height:40px;border-radius:var(--radius-sm);background:var(--primary);color:#FFF;border:none;font-size:20px;cursor:pointer;box-shadow:var(--shadow-md)}
.floating-expand-btn.show{display:block}

@media(max-width:768px){
  /* 侧边栏 */
  .sidebar{position:fixed;left:calc(-1 * var(--sidebar-width));z-index:100;transition:left .3s;width:var(--sidebar-width);min-width:var(--sidebar-width)}
  .sidebar.open{left:0;box-shadow:4px 0 24px rgba(0,0,0,.15)}
  .sidebar-collapse-btn{display:none}
  /* 移动端导航项更大 */
  .nav-item{font-size:15px;padding:12px 16px;gap:12px}
  .nav-icon{font-size:20px}
  .nav-badge{font-size:13px}
  /* 联系我们按钮 */
  .contact-btn{padding:10px 16px;font-size:14px;border-radius:var(--radius-sm)}

  /* 菜单按钮 */
  .menu-toggle{display:flex;align-items:center;justify-content:center;width:44px;height:44px;font-size:22px}
  .floating-expand-btn{width:44px;height:44px;font-size:22px}

  /* 主内容 */
  .content{padding:24px 16px 100px}
  .main{padding-bottom:80px}

  /* 页面标题 */
  .page-title{font-size:20px}
  .page-desc{font-size:13px}

  /* 工具卡片 */
  .tools-grid{grid-template-columns:1fr;gap:10px}
  .tool-card{padding:14px 14px;min-height:auto;gap:12px}
  .tool-logo{font-size:28px;width:44px}
  .tool-logo img{width:40px;height:40px}
  .tool-name{font-size:15px}
  .tool-desc{font-size:12px;-webkit-line-clamp:2}
  .featured-badge{font-size:9px}

  /* 工具详情 */
  .detail-body-padding{padding:16px 16px 80px}
  .detail-header{flex-direction:column;gap:14px}
  .detail-logo{font-size:36px;text-align:center}
  .detail-logo img{width:56px;height:56px}
  .detail-name-row{flex-wrap:wrap}
  .detail-name{font-size:20px}
  .detail-desc{font-size:13px}
  .btn-visit{padding:10px 20px;font-size:14px}
  .detail-tags{gap:6px}

  /* 内容区 */
  .content-section{padding:12px 14px}
  .content-section-title{font-size:14px}
  .content-item{font-size:13px;gap:8px}

  /* 同类工具条 */
  .peer-tools-bar{left:0;right:0;padding:12px 12px;gap:8px}
  .peer-back-btn{padding:8px 14px;font-size:13px;border-radius:14px}
  .peer-tool-chip{padding:7px 14px;font-size:12px;border-radius:14px}
  .peer-divider{display:none}
  .peer-name{display:none}
  .peer-icon{font-size:16px}

  /* 联系我们面板 */
  .contact-panel{width:100vw;border-radius:var(--radius) var(--radius) 0 0}
  .contact-item{gap:10px;padding:12px 0}
  .contact-icon{font-size:28px;width:40px}
  .contact-label{font-size:13px}
  .contact-value{font-size:11px}
  .contact-action{padding:8px 14px;font-size:13px}
  .contact-qr img{width:150px;height:150px}

  /* 文章面板 */
  .article-panel{width:100vw;max-height:85vh;border-radius:var(--radius) var(--radius) 0 0}
  .article-panel-header{padding:16px 18px 12px}
  .article-panel-body{padding:16px 18px;font-size:14px}

  /* 页脚 */
  .site-footer{padding:12px 16px}
  .site-footer a{font-size:11px}

  /* 标签 */
  .tag{font-size:11px;padding:2px 8px}

  /* iOS 安全区 */
  @supports(padding-top:env(safe-area-inset-top)){
    .sidebar{padding-top:env(safe-area-inset-top)}
    .sidebar-header{padding-top:calc(24px + env(safe-area-inset-top))}
    .menu-toggle{top:calc(100px + env(safe-area-inset-top))}
    .peer-tools-bar{padding-bottom:calc(12px + env(safe-area-inset-bottom))}
  }
}