/* ============================================================
   投产计算工坊 · 全局样式（深色主题）
   ============================================================ */
:root{
  --bg: #0c0f14;
  --bg-soft: #12161d;
  --card: #161b24;
  --card-line: rgba(255,255,255,.07);
  --ink: #e8ecf2;
  --ink-dim: #8b93a3;
  --ink-faint: #5b6272;
  --amber: #f0a93c;
  --amber-soft: rgba(240,169,60,.12);
  --green: #37d39a;
  --green-soft: rgba(55,211,154,.12);
  --red: #ff6b6b;
  --red-soft: rgba(255,107,107,.12);
  --mono: "JetBrains Mono","SF Mono",Consolas,"Cascadia Code",monospace;
  --sans: "PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",-apple-system,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);background:var(--bg);color:var(--ink);
  min-height:100vh;position:relative;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 480px at 15% -10%, rgba(240,169,60,.10), transparent 60%),
    radial-gradient(700px 420px at 90% 0%, rgba(55,211,154,.07), transparent 60%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto, auto, 44px 44px, 44px 44px;
}
.wrap{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:24px 20px 64px}

/* ===== 顶栏 ===== */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(12,15,20,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--card-line);
}
.topbar-inner{max-width:1120px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.brand{font-size:17px;font-weight:800;letter-spacing:.03em;white-space:nowrap}
.brand span{color:var(--amber)}

/* ===== Tab 导航 ===== */
.tabs{display:flex;gap:6px;margin-left:auto}
.tab{
  background:transparent;border:1px solid transparent;border-radius:9px;
  color:var(--ink-dim);font-size:14px;padding:7px 16px;cursor:pointer;font-family:inherit;
  transition:all .2s ease;
}
.tab:hover{color:var(--ink)}
.tab.active{
  color:var(--amber);border-color:rgba(240,169,60,.35);background:var(--amber-soft);
}
.auth-zone{display:flex;align-items:center;gap:10px}
.auth-user{font-size:13px;color:var(--ink-dim)}
.tab-panel{display:none;animation:rise .35s ease}
.tab-panel.active{display:block}

/* ===== 按钮 ===== */
.btn{
  font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;
  border:1px solid rgba(240,169,60,.45);border-radius:9px;
  background:var(--amber-soft);color:var(--amber);
  padding:9px 18px;transition:all .2s ease;
}
.btn:hover{background:rgba(240,169,60,.22);transform:translateY(-1px)}
.btn.ghost{background:transparent;border-color:var(--card-line);color:var(--ink-dim)}
.btn.ghost:hover{color:var(--ink);border-color:rgba(255,255,255,.2)}
.btn.danger{background:var(--red-soft);border-color:rgba(255,107,107,.35);color:var(--red)}
.btn.small{padding:5px 10px;font-size:12px;border-radius:7px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ===== 头部 ===== */
header{text-align:center;margin:26px 0 30px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.22em;color:var(--amber);
  border:1px solid var(--card-line);border-radius:999px;
  padding:6px 14px;background:var(--card);
}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber);box-shadow:0 0 8px var(--amber)}
h1{font-size:clamp(26px,4.6vw,40px);font-weight:800;letter-spacing:.02em;margin:14px 0 8px;line-height:1.2}
h1 em{font-style:normal;color:var(--amber)}
.sub{color:var(--ink-dim);font-size:13.5px;line-height:1.8;max-width:600px;margin:0 auto}
.sub b{color:var(--ink);font-weight:600}

/* ===== 页面小节标题 ===== */
.sec-head{display:flex;align-items:center;gap:10px;margin:26px 0 14px}
.sec-head .no{
  font-family:var(--mono);font-size:12px;color:var(--amber);
  border:1px solid rgba(240,169,60,.35);border-radius:6px;padding:3px 7px;
}
.sec-head h2{font-size:16px;font-weight:700}
.sec-head .right{margin-left:auto;display:flex;gap:8px;align-items:center}

/* ===== 卡片区 ===== */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:820px){.grid{grid-template-columns:1fr}}
.card{
  background:linear-gradient(180deg,var(--card),var(--bg-soft));
  border:1px solid var(--card-line);border-radius:16px;
  padding:22px 22px 24px;position:relative;overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(240,169,60,.35);box-shadow:0 14px 40px -18px rgba(0,0,0,.8)}
.card .glow{position:absolute;top:-60px;right:-60px;width:160px;height:160px;border-radius:50%;background:var(--amber-soft);filter:blur(50px);pointer-events:none}
.card-head{display:flex;align-items:baseline;gap:10px;margin-bottom:18px}
.card-no{font-family:var(--mono);font-size:12px;color:var(--amber);border:1px solid rgba(240,169,60,.35);border-radius:6px;padding:3px 7px}
.card-title{font-size:17px;font-weight:700;letter-spacing:.02em}
.card-tag{font-size:11px;color:var(--ink-faint);letter-spacing:.08em}
.follow-btn{
  margin-left:auto;font-family:inherit;font-size:11px;cursor:pointer;white-space:nowrap;
  border:1px solid var(--card-line);border-radius:999px;
  background:rgba(255,255,255,.03);color:var(--ink-faint);
  padding:4px 10px;transition:all .2s ease;
}
.follow-btn:hover{color:var(--ink)}
.follow-btn.on{color:var(--green);border-color:rgba(55,211,154,.35);background:var(--green-soft)}
.follow-btn.off{color:var(--amber);border-color:rgba(240,169,60,.35);background:var(--amber-soft)}
.follow-btn.off:hover{color:var(--amber)}

/* ===== 表单/输入行 ===== */
.fields{display:flex;flex-direction:column;gap:12px}
.field{display:flex;align-items:center;gap:12px}
.field label{flex:0 0 92px;font-size:13px;color:var(--ink-dim)}
.field .input-wrap{flex:1;position:relative}
.field .unit{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--ink-faint);pointer-events:none}
.field input,.field select{
  width:100%;padding:11px 42px 11px 14px;
  background:rgba(0,0,0,.28);border:1px solid var(--card-line);border-radius:10px;
  color:var(--ink);font-family:var(--mono);font-size:15px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:textfield;-moz-appearance:textfield;
}
.field select{appearance:auto;font-family:var(--sans);font-size:14px;padding-right:12px}
.field input::-webkit-outer-spin-button,.field input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.field input:focus,.field select:focus{border-color:var(--amber);box-shadow:0 0 0 3px var(--amber-soft)}
.field input::placeholder{color:var(--ink-faint);font-size:13px}
/* no-unit 挂在 field 或 input-wrap 上均生效（否则会残留 42px 幽灵右内边距） */
.field.no-unit input,.field .input-wrap.no-unit input{padding-right:14px}

/* ===== 结果区 ===== */
.result{margin-top:18px;border-radius:12px;padding:14px 16px;background:rgba(0,0,0,.25);border:1px dashed var(--card-line)}
.result .r-label{font-size:11px;color:var(--ink-faint);letter-spacing:.14em;margin-bottom:6px}
.result .r-value{font-family:var(--mono);font-size:25px;font-weight:700;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--green)}
.result .r-value.is-amber{color:var(--amber)}
.result .r-value .r-unit{font-size:14px;color:var(--ink-dim);font-weight:500;margin-left:4px}
.result .r-sub{font-family:var(--mono);font-size:12px;color:var(--ink-dim);margin-top:4px}
.formula{margin-top:8px;font-size:12px;color:var(--ink-faint);font-family:var(--mono)}
.result.bad .r-value{color:var(--red)}
.result.bad{border-color:rgba(255,107,107,.35)}
.tip{margin-top:10px;font-size:11px;line-height:1.7;color:var(--ink-faint)}
.tip b{color:var(--amber);font-weight:600}

/* ===== 进阶成本面板 ===== */
.adv-panel{margin:20px 0;border:1px solid var(--card-line);border-radius:14px;background:var(--card);overflow:hidden}
.adv-toggle{
  width:100%;text-align:left;cursor:pointer;
  background:transparent;border:none;color:var(--ink-dim);
  font-family:inherit;font-size:13.5px;padding:14px 18px;
  display:flex;align-items:center;gap:8px;
}
.adv-toggle .arrow{transition:transform .2s ease;color:var(--amber);font-family:var(--mono)}
.adv-toggle:hover{color:var(--ink)}
.adv-toggle.open .arrow{transform:rotate(90deg)}
.adv-body{padding:4px 18px 18px;border-top:1px solid var(--card-line)}
.adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;padding-top:16px}
.adv-note{margin-top:10px;font-size:11.5px;color:var(--ink-faint);line-height:1.7}

/* ===== 批量计算 ===== */
.batch-card{margin-top:18px}
.batch-card textarea{
  width:100%;min-height:110px;resize:vertical;
  background:rgba(0,0,0,.28);border:1px solid var(--card-line);border-radius:10px;
  color:var(--ink);font-family:var(--mono);font-size:13px;padding:12px 14px;outline:none;
}
.batch-card textarea:focus{border-color:var(--amber);box-shadow:0 0 0 3px var(--amber-soft)}
.batch-hint{margin-top:8px;font-size:11.5px;color:var(--ink-faint);line-height:1.7}
.btn-row{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}

/* ===== 商品库筛选工具条 ===== */
.prod-toolbar{
  display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;
  background:linear-gradient(180deg,var(--card),var(--bg-soft));
  border:1px solid var(--card-line);border-radius:14px;
  padding:14px 18px;margin-bottom:14px;
}
.tool-item{display:flex;align-items:center;gap:8px;min-width:0}
.tool-item label{font-size:13px;color:var(--ink-dim);white-space:nowrap;flex:0 0 auto}
.tool-item .input-wrap{position:relative;display:block}
.tool-item input,.tool-item select{
  height:36px;padding:0 12px;border-radius:9px;background:rgba(0,0,0,.28);
  border:1px solid var(--card-line);color:var(--ink);font-family:var(--mono);
  font-size:14px;outline:none;min-width:0;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.tool-item select{font-family:var(--sans);padding-right:30px;cursor:pointer}
.tool-item input:focus,.tool-item select:focus{border-color:var(--amber);box-shadow:0 0 0 3px var(--amber-soft)}
.tool-item input::placeholder{color:var(--ink-faint);font-size:12.5px}
.tool-item #prod-search{width:190px}
.tool-item #prod-filter,.tool-item #prod-shop-filter{width:132px}
.tool-item #prod-return-apply{width:88px;text-align:right}
.tool-item .btn{white-space:nowrap;flex:0 0 auto}

/* ===== 表格 ===== */
.bulk-bar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  background:var(--amber-soft);border:1px solid rgba(240,169,60,.35);border-radius:12px;
  padding:9px 14px;margin-bottom:12px;
}
.bulk-bar .bulk-count{font-size:13px;color:var(--amber);font-weight:600;margin-right:auto}
.bulk-bar[hidden]{display:none !important}
.bulk-clear-label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-dim);margin-top:14px;cursor:pointer}
input[type="checkbox"]{width:15px;height:15px;cursor:pointer;accent-color:var(--amber)}
#prod-list{user-select:none;-webkit-user-select:none}
#prod-list tr[data-id]{cursor:pointer}
#prod-list tr.row-selected td{background:rgba(240,169,60,.09)}
.drag-cell{width:44px;text-align:center}
.drag-handle{
  cursor:grab;color:var(--ink-faint);font-size:13px;letter-spacing:-2px;
  padding:4px 6px;user-select:none;display:inline-block;
}
.drag-handle:hover{color:var(--amber)}
#prod-list tr.dragging{opacity:.45}
#prod-list tr.drag-over td{border-top:2px solid var(--amber)}
.select-box{position:fixed;z-index:9999;border:1px dashed var(--amber);background:rgba(240,169,60,.14);pointer-events:none}
.table-wrap{margin-top:14px;overflow-x:auto;border:1px solid var(--card-line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:760px}
thead th{
  text-align:left;font-size:11.5px;color:var(--ink-faint);letter-spacing:.08em;
  padding:11px 14px;border-bottom:1px solid var(--card-line);white-space:nowrap;
  background:rgba(255,255,255,.02);
}
tbody td{padding:11px 14px;border-bottom:1px solid var(--card-line);white-space:nowrap;color:var(--ink-dim);font-variant-numeric:tabular-nums}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:rgba(255,255,255,.025)}
tbody tr:hover td{color:var(--ink)}
td.num{font-family:var(--mono)}
td.good{color:var(--green)}td.bad{color:var(--red)}td.amber{color:var(--amber)}
.table-empty{padding:40px 20px;text-align:center;color:var(--ink-faint);font-size:13px}
.name-cell{color:var(--ink);font-weight:600;max-width:220px;overflow:hidden;text-overflow:ellipsis}

/* ===== 徽标/平台 ===== */
.plat{font-size:11px;padding:2px 8px;border-radius:999px;border:1px solid var(--card-line);color:var(--ink-dim)}

/* ===== 空状态（未登录提示） ===== */
.empty{padding:56px 20px;text-align:center;color:var(--ink-faint);font-size:14px;line-height:2}
.empty .big{font-size:30px;opacity:.5;display:block;margin-bottom:8px}

/* ===== 弹窗 ===== */
.modal-mask{
  position:fixed;inset:0;z-index:100;background:rgba(5,8,12,.68);
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;pointer-events:none;transition:opacity .22s ease;
}
.modal-mask.show{opacity:1;pointer-events:auto}
.modal{
  width:100%;max-width:520px;max-height:88vh;overflow-y:auto;
  background:linear-gradient(180deg,#1a2130,var(--bg-soft));
  border:1px solid rgba(255,255,255,.09);border-radius:16px;
  box-shadow:0 24px 64px -20px rgba(0,0,0,.85),0 0 0 1px rgba(240,169,60,.05);
  padding:20px 24px 22px;
  transform:translateY(16px) scale(.97);transition:transform .22s cubic-bezier(.2,.9,.3,1.15);
}
.modal-mask.show .modal{transform:none}
.modal.modal-sm{max-width:390px}
.modal-head{
  display:flex;align-items:center;gap:10px;
  padding-bottom:14px;margin-bottom:16px;border-bottom:1px solid var(--card-line);
}
.modal-head .modal-icon{font-size:17px;line-height:1}
.modal-head .modal-title{font-size:15.5px;font-weight:700;letter-spacing:.02em;flex:1;min-width:0}
.modal-close{
  width:28px;height:28px;border-radius:8px;border:1px solid transparent;
  background:transparent;color:var(--ink-faint);font-size:14px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  transition:all .18s ease;
}
.modal-close:hover{color:var(--red);background:var(--red-soft);border-color:rgba(255,107,107,.3)}
.modal-body{min-height:0}
.modal .fields{gap:13px}
.modal-foot{
  margin-top:20px;padding-top:15px;border-top:1px solid var(--card-line);
  display:flex;gap:10px;justify-content:flex-end;
}
.modal .shop-add{display:flex;gap:8px;margin:14px 0}
.modal .shop-add input{
  flex:1;background:rgba(0,0,0,.28);border:1px solid var(--card-line);border-radius:9px;
  color:var(--ink);padding:9px 12px;font-size:13px;outline:none;
}
.modal .shop-add input:focus{border-color:var(--amber)}
/* 通用确认弹窗 */
.confirm-icon{font-size:30px;text-align:center;margin-bottom:10px;line-height:1}
.confirm-body{font-size:14px;line-height:1.9;color:var(--ink-dim);padding:2px 4px;word-break:break-all}
.confirm-body b{color:var(--ink)}

/* ===== Toast ===== */
.toast-wrap{position:fixed;top:76px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{
  background:var(--card);border:1px solid var(--card-line);border-left:3px solid var(--amber);
  color:var(--ink);font-size:13px;padding:10px 18px;border-radius:10px;
  box-shadow:0 12px 32px -12px rgba(0,0,0,.8);
  animation:rise .25s ease;max-width:86vw;
}
.toast.ok{border-left-color:var(--green)}
.toast.err{border-left-color:var(--red)}
.toast.hide{opacity:0;transform:translateY(-8px);transition:all .3s ease}

/* ===== 历史记录 ===== */
.history-item{
  display:flex;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--card-line);border-radius:12px;
  padding:14px 18px;margin-bottom:10px;
}
.history-item .h-main{flex:1;min-width:0}
.history-item .h-title{font-size:14px;font-weight:600;color:var(--ink)}
.history-item .h-meta{font-size:12px;color:var(--ink-faint);margin-top:3px;font-family:var(--mono)}
.history-item .h-prev{font-size:12px;color:var(--ink-dim);margin-top:5px;line-height:1.6;font-family:var(--mono)}

/* ===== 登录页 ===== */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;position:relative;z-index:1}
.auth-card{
  width:100%;max-width:400px;
  background:linear-gradient(180deg,var(--card),var(--bg-soft));
  border:1px solid var(--card-line);border-radius:18px;padding:34px 30px;
}
.auth-card .brand{text-align:center;font-size:20px;font-weight:800;margin-bottom:6px}
.auth-card .brand span{color:var(--amber)}
.auth-card .auth-sub{text-align:center;font-size:12.5px;color:var(--ink-faint);margin-bottom:26px}
.auth-card .fields{gap:14px}
.auth-card .field label{flex:0 0 64px}
.auth-card .auth-foot{margin-top:26px}
.auth-card .auth-switch{margin-top:16px;text-align:center;font-size:13px;color:var(--ink-dim)}
.auth-card .auth-switch a{color:var(--amber);cursor:pointer;text-decoration:none}
.auth-card .auth-switch a:hover{text-decoration:underline}

/* ===== 页脚 ===== */
footer{margin-top:46px;text-align:center;font-size:12px;color:var(--ink-faint);line-height:2}
footer .foot-formula{font-family:var(--mono);color:var(--ink-dim)}

@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}