/* ===================================
   style.css — 产品 AI 顾问样式
   =================================== */

/* ── Tab 切换 ── */
.ai-tabs{display:flex;gap:4px;margin-bottom:20px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.ai-tab{padding:10px 20px;border-radius:8px;font-size:14px;color:var(--text-dim);cursor:pointer;white-space:nowrap;border:1px solid transparent;transition:.2s;background:rgba(255,255,255,.03)}
.ai-tab:hover{background:rgba(255,255,255,.06);color:var(--text-bright)}
.ai-tab.active{background:rgba(68,204,68,.1);color:var(--accent);border-color:rgba(68,204,68,.2)}
.ai-tab .badge{font-size:11px;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:10px;margin-left:4px;color:var(--text-dim)}

/* ── 搜索栏 ── */
.search-bar{display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap}
.search-bar input{flex:1;min-width:200px;padding:14px 18px;font-size:16px}
.search-tips{font-size:13px;color:var(--text-dim);margin-bottom:16px;padding:8px 12px;background:rgba(255,255,255,.02);border-radius:8px}

/* ── 产品卡片（折叠） ── */
.product-card{margin-bottom:10px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.2s}
.product-card:hover{border-color:rgba(68,204,68,.12)}
.product-card .card-header{display:flex;align-items:center;gap:12px;padding:14px 16px;cursor:pointer;user-select:none}
.product-card .card-header .check{width:20px;height:20px;accent-color:var(--accent);cursor:pointer;flex-shrink:0}
.product-card .card-header .name{flex:1;font-size:15px;font-weight:600;color:var(--text-bright)}
.product-card .card-header .brand{font-size:12px;color:var(--text-dim);background:rgba(255,255,255,.04);padding:2px 8px;border-radius:4px}
.product-card .card-header .arrow{font-size:12px;color:var(--text-dim);transition:transform .2s}
.product-card .card-header .arrow.open{transform:rotate(180deg)}
.product-card .card-body{display:none;padding:0 16px 16px;border-top:1px solid var(--border)}
.product-card .card-body.show{display:block}

/* ── 折叠内子表 ── */
.sub-section{margin-top:12px}
.sub-section h4{font-size:13px;font-weight:600;color:var(--text-dim);margin-bottom:8px}
.sub-table{width:100%;border-collapse:collapse;font-size:12px}
.sub-table th{text-align:left;padding:6px 8px;color:var(--text-dim);border-bottom:1px solid var(--border);font-weight:500}
.sub-table td{padding:6px 8px;border-bottom:1px solid rgba(255,255,255,.04)}
.sub-table tr:hover td{background:rgba(255,255,255,.02)}

/* ── 模式选择 ── */
.mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin-bottom:20px}
.mode-card{padding:16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);text-align:center;cursor:pointer;transition:.2s}
.mode-card:hover{border-color:rgba(68,204,68,.2);background:rgba(68,204,68,.03)}
.mode-card .icon{font-size:28px;margin-bottom:6px}
.mode-card .name{font-size:14px;color:var(--text-bright);font-weight:600}
.mode-card .cost{font-size:12px;color:var(--text-dim);margin-top:4px}
.mode-card.selected{border-color:var(--accent);background:rgba(68,204,68,.08)}

/* ── 自定义需求输入框 ── */
.req-textarea{width:100%;min-height:140px;padding:14px 16px;font-size:14px;line-height:1.8;color:var(--text-bright);background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);resize:vertical;font-family:inherit;transition:.2s;box-sizing:border-box}
.req-textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(68,204,68,.12)}
.req-textarea::placeholder{color:var(--text-dim)}

/* ── 操作栏 ── */
.action-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px;padding:16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);align-items:center}
.action-bar .info{flex:1;font-size:13px;color:var(--text-dim);min-width:120px}
.action-bar .info strong{color:var(--accent)}

/* ── 结果区 ── */
.result-wrap{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px}
.result-wrap .result-meta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-dim)}
.result-wrap .result-meta span strong{color:var(--text-bright)}
.badge-ms{color:var(--accent);font-weight:600}
.result-content{line-height:1.8;font-size:15px;color:var(--text-normal);overflow-wrap:break-word}
.result-content h1,.result-content h2,.result-content h3{margin:20px 0 10px;color:var(--text-bright)}
.result-content h1{font-size:22px;border-bottom:1px solid var(--border);padding-bottom:8px}
.result-content h2{font-size:18px}
.result-content h3{font-size:16px}
.result-content table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px}
.result-content th{border:1px solid var(--border);padding:8px 12px;background:rgba(255,255,255,.03);text-align:left;color:var(--text-bright)}
.result-content td{border:1px solid var(--border);padding:8px 12px}
.result-content strong{color:var(--accent)}
.result-content ul,.result-content ol{padding-left:24px;margin:8px 0}
.result-content li{margin:4px 0}
.result-content code{padding:2px 6px;border-radius:4px;background:rgba(68,204,68,.08);font-size:13px}
.result-content pre{background:rgba(0,0,0,.2);padding:12px;border-radius:8px;overflow-x:auto;margin:12px 0;font-size:13px}
.result-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}

/* ── 历史列表 ── */
.history-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:8px;cursor:pointer;transition:.2s}
.history-item:hover{border-color:rgba(68,204,68,.12)}
.history-item .h-icon{font-size:20px;width:28px;text-align:center}
.history-item .h-info{flex:1;min-width:0}
.history-item .h-info .h-query{font-size:14px;color:var(--text-bright);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.history-item .h-info .h-meta{font-size:12px;color:var(--text-dim);margin-top:2px}
.history-item .h-cost{font-size:12px;color:var(--accent);font-weight:600;white-space:nowrap}
.history-item .h-actions{display:flex;gap:6px}

/* ── 空状态 ── */
.empty{text-align:center;padding:60px 20px;color:var(--text-dim)}
.empty .icon{font-size:48px;margin-bottom:12px}
.empty p{font-size:14px;line-height:1.8}

/* ── 加载动画 ── */
.loading{text-align:center;padding:40px;color:var(--text-dim)}
.loading .spinner{display:inline-block;width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:12px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── 响应式 ── */
@media(max-width:640px){
  .mode-grid{grid-template-columns:1fr 1fr}
  .search-bar input{font-size:15px;padding:12px 14px}
  .product-card .card-header{padding:10px 12px}
  .product-card .card-header .name{font-size:14px}
  .result-wrap{padding:16px}
  .result-content{font-size:14px}
  .history-item{padding:10px 12px}
  .ai-tab{padding:8px 14px;font-size:13px}
}

/* ── 汇总区块（SKU/配件通用） ── */
.section{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:12px}
.section h3{font-size:15px;font-weight:600;color:var(--text-bright);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border)}