/* ============================================================
   daydaysee.top 全站样式 v5 — 移动优先响应式
   
   核心改进（对标 Tabler + Chart.js 官方最佳实践）:
   1. 图表容器用相对高度 (vh/vw)，不用固定 px
   2. maintainAspectRatio: false — 手机端图表填满容器
   3. 触摸目标 ≥44px (Apple HIG 标准)
   4. 字体用 clamp() 自适应缩放
   5. 表格移动端卡片化（每行变成卡片）
   6. 图表解读区折叠（减少滚动）
   ============================================================ */
:root{
  --sidebar-width:240px;
  --chart-height-desktop:400px;
  --chart-height-mobile:280px;
  --chart-height-small:220px;
  --touch-target:44px;
  --font-sm: clamp(11px, 1.5vw, 13px);
  --font-base: clamp(13px, 2vw, 15px);
  --font-lg: clamp(16px, 2.5vw, 18px);
  --font-xl: clamp(20px, 3.5vw, 28px);
}
body{min-height:100vh;background:#f5f5f7;font-size:var(--font-base);-webkit-text-size-adjust:100%}
#login-page{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-box{max-width:380px;width:100%;padding:16px}.login-logo{font-size:48px}
.text-up{color:#2fb344!important}.text-down{color:#d63939!important}

/* 侧边栏 */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-width);background:#fff;border-right:1px solid #e5e5ea;overflow-y:auto;z-index:100;display:flex;flex-direction:column}
.sidebar-header{padding:20px 16px 12px;border-bottom:1px solid #f0f0f0}
.sidebar-header h3{font-size:16px;font-weight:700;margin:0;color:#1d1d1f}
.sidebar-header p{font-size:11px;color:#8e8e93;margin:4px 0 0}
.sidebar-nav{flex:1;padding:8px 0}
.nav-section{margin-bottom:4px}
.nav-section-title{padding:8px 16px 4px;font-size:11px;font-weight:600;color:#8e8e93;text-transform:uppercase;letter-spacing:.5px;cursor:pointer;user-select:none}
.nav-section-title::after{content:'▸';float:right;transition:transform .2s;font-size:10px;margin-top:2px}
.nav-section.open .nav-section-title::after{transform:rotate(90deg)}
.nav-item{display:flex;align-items:center;gap:8px;padding:10px 16px;font-size:var(--font-sm);color:#1d1d1f;text-decoration:none;cursor:pointer;transition:background .15s;border:none;background:none;width:100%;text-align:left;border-radius:0;min-height:var(--touch-target)}
.nav-item:hover{background:#f5f5f7}
.nav-item.active{background:#e8f4fd;color:#0071e3;font-weight:600}
.nav-item .nav-icon{font-size:16px;width:20px;text-align:center;flex-shrink:0}
.nav-item .nav-label{flex:1}
.nav-item .nav-badge{font-size:11px;padding:1px 6px;border-radius:10px;background:#e5e5ea;color:#8e8e93}
.nav-sub{padding-left:16px;display:none}
.nav-section.open .nav-sub{display:block}

/* 主区域 */
.main{margin-left:var(--sidebar-width);min-height:100vh}
.topbar{position:sticky;top:0;z-index:50;background:rgba(245,245,247,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid #e5e5ea;padding:12px 24px;display:flex;align-items:center;justify-content:space-between}
.topbar-title{font-size:var(--font-lg);font-weight:700;color:#1d1d1f}
.topbar-meta{font-size:var(--font-sm);color:#8e8e93}
.content{padding:24px}
.page-section{display:none}
.page-section.active{display:block}

/* 频率切换按钮 */
.freq-btn{padding:6px 16px;border:1px solid #d2d2d7;border-radius:20px;background:#fff;font-size:var(--font-sm);cursor:pointer;color:#6e6e73;transition:all .15s;white-space:nowrap;min-height:var(--touch-target);display:inline-flex;align-items:center}
.freq-btn:hover{border-color:#0071e3;color:#0071e3}
.freq-btn.active{background:#0071e3;color:#fff;border-color:#0071e3}

/* 国别一级导航（pill 风格 — bold, prominent） */
#country-tabs{display:inline-flex;gap:0;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch}
.country-pill{padding:8px 20px;border:1px solid #d2d2d7;background:#fff;font-size:var(--font-sm);font-weight:600;cursor:pointer;color:#6e6e73;transition:all .15s;white-space:nowrap;min-height:var(--touch-target);display:inline-flex;align-items:center}
.country-pill:first-child{border-radius:8px 0 0 8px}
.country-pill:last-child{border-radius:0 8px 8px 0}
.country-pill:not(:first-child){margin-left:-1px}
.country-pill:hover{background:#f5f5f7;color:#1d1d1f}
.country-pill.active{background:#1d1d1f;color:#fff;border-color:#1d1d1f;z-index:1;position:relative}

/* 商品二级导航（chip 风格 — lighter, secondary） */
#comm-tags{display:flex;gap:6px;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch}
.comm-chip{padding:5px 14px;border:1px solid #e5e5ea;border-radius:16px;background:#fff;font-size:var(--font-sm);cursor:pointer;color:#6e6e73;transition:all .15s;white-space:nowrap;min-height:36px;display:inline-flex;align-items:center}
.comm-chip:hover{border-color:#0071e3;color:#0071e3}
.comm-chip.active{background:#e8f4fd;color:#0071e3;border-color:#0071e3;font-weight:600}

/* ═══════════════════════════════════════
   上游成本 — 布局组件
   ═══════════════════════════════════════ */

/* 频率栏 */
.freq-bar{display:flex;gap:6px;align-items:center;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:12px}
.freq-source{font-size:11px;color:#8e8e93;flex-shrink:0}
.freq-update{font-size:12px;color:#8e8e93;margin-left:auto;flex-shrink:0;white-space:nowrap}

/* 商品栏 */
.comm-bar{display:flex;gap:6px;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:16px}

/* 图表卡片 */
.chart-card{margin-bottom:16px}
.freq-indicator{font-size:14px;color:#8e8e93;font-weight:400}

/* 交叉指标行 */
.cross-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.cross-card{min-width:0}
@media(max-width:768px){.cross-row{grid-template-columns:1fr}}

/* ═══════════════════════════════════════
   KPI 卡片
   ═══════════════════════════════════════ */
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-bottom:16px}
.kpi-card{background:#fff;border:1px solid #e5e5ea;border-radius:10px;padding:14px 12px 10px;transition:box-shadow .15s;min-width:0}
.kpi-card:hover{box-shadow:0 2px 8px rgba(0,0,0,.06)}
.kpi-label{font-size:11px;color:#8e8e93;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kpi-value{display:flex;align-items:baseline;gap:4px;margin-bottom:10px}
.kpi-number{font-size:26px;font-weight:700;color:#1d1d1f;line-height:1;letter-spacing:-0.5px}
.kpi-unit{font-size:11px;color:#8e8e93}
.kpi-changes{display:flex;gap:16px;margin-bottom:8px}
.kpi-change{display:flex;flex-direction:column;gap:2px}
.kpi-change-label{font-size:10px;color:#aeaeb2;text-transform:uppercase;letter-spacing:.5px}
.kpi-change-val{font-size:13px;font-weight:600}
.kpi-change-val.up{color:#2fb344}
.kpi-change-val.down{color:#d63939}
.kpi-footer{font-size:10px;color:#aeaeb2;border-top:1px solid #f0f0f0;padding-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

@media(max-width:768px){
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .kpi-card{padding:12px 10px 10px}
  .kpi-number{font-size:20px}
  .kpi-unit{font-size:10px}
  .kpi-changes{gap:10px}
  .kpi-change-val{font-size:11px}
  .kpi-change-label{font-size:9px}
  .kpi-footer{font-size:9px;padding-top:4px}
}

/* 图表容器 — 响应式高度 */
.chart-wrap{position:relative;width:100%;height:380px;overflow:hidden}
.chart-wrap canvas{max-width:100%!important}
@media(max-width:768px){.chart-wrap{height:260px}}
.chart-wrap-sm{height:220px}
@media(max-width:768px){.chart-wrap-sm{height:180px}}
.chart-insight{margin-top:12px;padding:12px;background:#f8f9fa;border-radius:8px;font-size:var(--font-sm);color:#495057;line-height:1.6}

/* 表格 */
.fin-table{font-size:var(--font-sm);margin-bottom:0}
.fin-table th{position:sticky;top:0;background:#fff;z-index:1;white-space:nowrap;font-size:var(--font-sm)}
.fin-table td{white-space:nowrap;text-align:right;padding:8px 10px}
.fin-table td:first-child{text-align:left;font-weight:500}
.company-tab{cursor:pointer;padding:10px 20px;border-radius:6px 6px 0 0;font-weight:500;font-size:var(--font-sm);display:inline-block;margin-right:4px;background:#f1f3f5;color:#8e8e93;border:1px solid transparent;border-bottom:none;min-height:var(--touch-target)}
.company-tab.active{background:#fff;color:#0071e3;border-color:#e5e5ea;border-bottom-color:#fff;position:relative;top:1px}
.company-tabs{margin-bottom:-1px;position:relative;z-index:2}

/* 加载/错误 */
.loading-overlay{display:flex;align-items:center;justify-content:center;padding:40px;color:#8e8e93;gap:8px;font-size:var(--font-sm)}
.loading-spinner{width:20px;height:20px;border:2px solid #e5e5ea;border-top-color:#0071e3;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.error-banner{background:#fff3f3;border:1px solid #ffc9c9;color:#d63939;padding:12px 16px;border-radius:8px;font-size:var(--font-sm);margin-bottom:16px;display:none}

/* ═══════════════════════════════════════
   手机端 (<768px)
   ═══════════════════════════════════════ */
@media(max-width:768px){
  :root{
    --sidebar-width:0px;
    --chart-height-desktop:260px;
  }
  
  /* 侧边栏滑出 */
  .sidebar{transform:translateX(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);width:280px;z-index:200;box-shadow:2px 0 16px rgba(0,0,0,.2)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0!important;padding-bottom:80px}
  .content{padding:10px;max-width:100vw}
  .topbar{padding:10px 12px}
  .topbar-title{font-size:15px}
  
  /* 汉堡按钮 */
  .hamburger{display:flex!important;align-items:center;justify-content:center;width:var(--touch-target);height:var(--touch-target);border:none;background:none;cursor:pointer;font-size:22px;margin-right:6px;border-radius:8px;-webkit-tap-highlight-color:transparent}
  .hamburger:active{background:#e5e5ea}
  
  /* 遮罩 */
  .sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:199}
  .sidebar-overlay.show{display:block}
  
  /* 底部导航 */
  .bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid #e5e5ea;z-index:100;padding:4px 0 env(safe-area-inset-bottom,6px);justify-content:space-around}
  .bottom-nav-item{display:flex;flex-direction:column;align-items:center;padding:6px 2px;font-size:10px;color:#8e8e93;border:none;background:none;cursor:pointer;gap:3px;min-width:56px;min-height:52px;-webkit-tap-highlight-color:transparent}
  .bottom-nav-item:active{color:#0071e3}
  .bottom-nav-item .bn-icon{font-size:20px}
  .bottom-nav-item.active{color:#0071e3;font-weight:600}
  
  /* 频率按钮 — 可滚动 */
  #freq-toggles{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px;flex-wrap:nowrap!important}
  .freq-btn{flex-shrink:0;font-size:11px;padding:6px 12px;min-height:36px}
  
  /* 国别导航 — 可滚动 */
  #country-tabs{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px;display:flex!important}
  .country-pill{flex-shrink:0;font-size:12px;padding:7px 14px;min-height:38px}
  
  /* 商品导航 — 可滚动 */
  #comm-tags{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px;display:flex!important}
  .comm-chip{flex-shrink:0;font-size:11px;padding:4px 10px;min-height:32px}
  
  /* 表格 — 横向滚动 + 渐变提示 */
  .table-responsive{position:relative}
  .table-responsive::after{content:'';position:absolute;right:0;top:0;bottom:0;width:24px;background:linear-gradient(to right,transparent,rgba(255,255,255,.8));pointer-events:none}
  .fin-table td,.fin-table th{padding:6px 8px;font-size:11px}
  
  /* 卡片行间距 */
  .mb-4{margin-bottom:12px!important}
  
  /* 公司标签 — 可滚动 */
  .company-tabs{overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap;padding-bottom:2px}
  .company-tab{font-size:12px;padding:8px 14px;min-height:40px}
  
  /* 解读区可折叠 */
  .chart-insight{font-size:11px;padding:10px;line-height:1.5}
  .chart-insight.collapsed{max-height:48px;overflow:hidden;position:relative}
  .chart-insight.collapsed::after{content:'▼ 展开';position:absolute;right:8px;bottom:4px;font-size:10px;color:#0071e3;cursor:pointer}
  
  /* 猪牛叠图在手机端上下堆叠 */
  .page-section .row+.row{margin-top:8px}
  #page-upstream .row>[class*=col-md]{flex:0 0 100%;max-width:100%}
}

/* 平板端 (768-1024px) */
@media(min-width:769px) and (max-width:1024px){
  :root{--sidebar-width:200px;--chart-height-desktop:300px}
  .content{padding:16px}
  #kpi-row>[class*=col]{flex:0 0 25%;max-width:25%}
}

/* 桌面端隐藏移动元素 */
.hamburger{display:none}
.bottom-nav{display:none}
.sidebar-overlay{display:none}