/* Trang Tra cứu thước Lỗ Ban (khối "loban" — .build/build.py r_loban, tương tác ở assets/loban.js).
   Đỏ = cung tốt, đen = cung xấu (quy ước của thước Lỗ Ban); vạch giữa thước dùng màu vàng đậm của website để không lẫn với cung đỏ. */
.lb{--lb-g:#a3241f;--lb-b:#1d1a17;padding-top:8px}
.lb-head{padding-bottom:18px}
.lb-g{color:var(--lb-g)}
.lb-b{color:var(--lb-b)}
.lb-tool,.lb-res,.lb-guide,.lb-tbl{max-width:1180px;margin-left:auto;margin-right:auto}

/* số đo + ô nhập */
.lb-read{display:flex;flex-direction:column;align-items:center;gap:14px}
.lb-big{font:500 46px/1 var(--f-disp);color:var(--accent-d);font-variant-numeric:tabular-nums}
.lb-big small{font:400 17px var(--f-body);color:var(--muted)}
.lb-in{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px}
.lb-in__l{font:500 13px var(--f-head);color:var(--muted)}
.lb-in__f{width:132px;height:46px;padding:0 10px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font:600 20px var(--f-head);text-align:center;outline:none;transition:border-color .2s,box-shadow .2s}
.lb-in__f:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(183,149,82,.18)}
.lb-in__f.is-bad{border-color:var(--lb-g)}
.lb-unit{display:inline-flex;padding:3px;border:1px solid var(--line);border-radius:8px;background:#fff}
.lb-unit button{min-width:50px;height:38px;padding:0 12px;border:0;border-radius:5px;background:transparent;color:var(--muted);font:500 14px var(--f-head);cursor:pointer;transition:background-color .2s,color .2s}
.lb-unit button[aria-pressed="true"]{background:var(--ink);color:#fff}

/* chú thích màu */
.lb-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px 20px;margin:28px 0 10px;font:500 13px var(--f-head);color:var(--muted)}
.lb-leg{display:inline-flex;align-items:center;gap:7px}
.lb-leg:first-child{color:var(--lb-g)}
.lb-leg:nth-child(2){color:var(--lb-b)}
.lb-dot{display:inline-block;width:10px;height:10px;border-radius:50%}
.lb-dot--g{background:var(--lb-g)}
.lb-dot--b{background:var(--lb-b)}
.lb-hint{margin-left:auto;font-weight:400}

/* 3 thước kéo */
.lb-wrap{position:relative}
.lb-rulers{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:#fbf8f4;cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;outline:none}
.lb-rulers.is-drag{cursor:grabbing}
.lb-rulers:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.lb-rulers::before,.lb-rulers::after{content:"";position:absolute;top:0;bottom:0;z-index:1;width:36px;pointer-events:none}
.lb-rulers::before{left:0;background:linear-gradient(90deg,#fbf8f4,rgba(251,248,244,0))}
.lb-rulers::after{right:0;background:linear-gradient(270deg,#fbf8f4,rgba(251,248,244,0))}
.lb-r+.lb-r{border-top:1px solid var(--line)}
.lb-r__h{position:relative;z-index:2;display:flex;align-items:baseline;flex-wrap:wrap;gap:2px 10px;padding:7px 16px;border-bottom:1px solid var(--line);background:#f4ede3;font-size:12.5px;line-height:1.45;color:var(--muted)}
.lb-r__h b{font:600 12.5px var(--f-head);color:var(--accent-d)}
.lb-r__c{display:block;width:100%;height:96px}
.lb-mark{position:absolute;top:0;bottom:0;left:50%;z-index:3;width:2px;margin-left:-1px;background:var(--accent-d);box-shadow:0 0 0 1px rgba(255,255,255,.55);pointer-events:none}
.lb-mark::before,.lb-mark::after{content:"";position:absolute;left:50%;width:0;height:0;margin-left:-7px;border-left:7px solid transparent;border-right:7px solid transparent}
.lb-mark::before{top:0;border-top:9px solid var(--accent-d)}
.lb-mark::after{bottom:0;border-bottom:9px solid var(--accent-d)}
.lb-step{position:absolute;top:50%;z-index:4;display:flex;align-items:center;justify-content:center;width:38px;height:38px;margin-top:-19px;padding:0;border:1px solid var(--line);border-radius:50%;background:var(--bg);color:var(--ink);font:400 22px/1 var(--f-head);box-shadow:0 6px 14px rgba(0,0,0,.1);cursor:pointer;touch-action:manipulation;-webkit-touch-callout:none;user-select:none;-webkit-user-select:none;transition:background-color .2s,color .2s,border-color .2s,transform .15s}
.lb-step:active{transform:scale(.94)}
.lb-step--l{left:-19px}
.lb-step--r{right:-19px}
@media (hover:hover){.lb-step:hover{background:var(--ink);border-color:var(--ink);color:#fff}}

/* kết quả */
.lb-res{margin-top:36px;border-top:1px solid var(--line)}
.lb-res__it{padding:24px 0;border-bottom:1px solid var(--line)}
.lb-res__h{font-size:20px;line-height:1.35;color:var(--ink)}
.lb-res__h span{font:400 14px var(--f-body);color:var(--muted)}
.lb-res__h span::before{content:"· "}
.lb-res__b{position:relative;margin-top:12px;padding-left:78px;min-height:30px}
.lb-res__b.is-new{animation:lb-in .35s var(--ease)}
.lb-badge{position:absolute;left:0;top:1px;display:inline-flex;align-items:center;justify-content:center;width:62px;height:28px;border-radius:5px;color:#fff;font:700 12px/1 var(--f-head);letter-spacing:.12em}
.lb-badge--g{background:var(--lb-g)}
.lb-badge--b{background:var(--lb-b)}
.lb-res__t{font-size:16px;line-height:1.65}
.lb-res__t b{font-weight:600}
.lb-res__m{margin-top:4px;font-size:14px;line-height:1.6;color:var(--muted)}
.lb-res__s{display:inline-block;margin-top:10px;padding:8px 14px;border-left:3px solid var(--accent);border-radius:0 6px 6px 0;background:rgba(183,149,82,.12);font-size:14px;line-height:1.55}
.lb-res__s b{font-weight:600}
@keyframes lb-in{from{opacity:.25;transform:translateY(6px)}to{opacity:1;transform:none}}

/* hướng dẫn */
.lb-sh{font-size:28px;line-height:1.3}
.lb-guide{margin-top:56px}
.lb-prose{max-width:920px;margin-top:16px;font-size:15.5px;line-height:1.75;color:var(--ink-2)}
.lb-prose>*+*{margin-top:12px}
.lb-prose h2,.lb-prose h3{margin-top:26px;font-size:20px;line-height:1.35}
.lb-prose ul,.lb-prose ol{margin-bottom:0;padding-left:22px}
.lb-prose li+li{margin-top:7px}
.lb-prose li::marker{color:var(--accent-d)}
.lb-prose b,.lb-prose strong{font-weight:600}

/* bảng tra nhanh */
.lb-tbl{margin-top:56px}
.lb-tbl__top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.lb-tabs{display:flex;gap:8px}
.lb-tab{height:38px;padding:0 16px;border:1px solid var(--line);border-radius:6px;background:transparent;color:var(--muted);font:500 13px var(--f-head);letter-spacing:.05em;cursor:pointer;transition:background-color .2s,color .2s,border-color .2s}
.lb-tab[aria-selected="true"]{border-color:var(--ink);background:var(--ink);color:#fff}
@media (hover:hover){.lb-tab[aria-selected="false"]:hover{border-color:var(--ink);color:var(--ink)}}
.lb-t__use{margin:14px 0 12px;font-size:14px;line-height:1.6;color:var(--muted)}
.lb-t__use b{font-weight:500;color:var(--ink)}
.lb-t__sc{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:#fbf8f4;-webkit-overflow-scrolling:touch}
.lb-t__sc:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.lb-t__sc table{width:100%;border-collapse:collapse;font-size:13.5px;white-space:nowrap;font-variant-numeric:tabular-nums}
.lb-t__sc th,.lb-t__sc td{padding:7px 12px;border-right:1px solid var(--soft);border-bottom:1px solid var(--soft);text-align:center;font-weight:400}
.lb-t__sc thead th{background:#f4ede3;color:var(--ink);font:600 11.5px var(--f-head);letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--line)}
.lb-t__sc tr.lb-g>*{color:var(--lb-g)}
.lb-t__sc tr.lb-b>*{color:var(--lb-b)}
.lb-t__sc tr.lb-t__top>*{border-top:1px solid var(--line)}
.lb-t__m{font:600 12.5px var(--f-head)!important;letter-spacing:.04em;text-transform:uppercase;vertical-align:middle;background:rgba(244,237,227,.5)}
.lb-t__m small{display:block;margin-top:2px;font-size:11px;font-weight:400;letter-spacing:0;text-transform:none;opacity:.75}
.lb-t__s{text-align:left!important;font-weight:600!important}
.lb-t__sc td.is-on{background:var(--lb-g);color:#fff!important;font-weight:600;border-radius:3px}
.lb-t__sc tr.lb-b td.is-on{background:var(--lb-b)}
.lb-t__note{margin-top:12px;font-size:13.5px;line-height:1.6;color:var(--muted)}

@media (max-width:768px){
  .lb-big{font-size:36px}
  .lb-big small{font-size:15px}
  .lb-in__l{width:100%;text-align:center}
  .lb-bar{gap:6px 16px;margin-top:22px}
  .lb-hint{width:100%;margin-left:0}
  .lb-r__h{padding:6px 12px;font-size:11.5px}
  .lb-r__h b{font-size:12px}
  .lb-r__h span{display:none}
  .lb-step{width:34px;height:34px;margin-top:-17px;font-size:20px}
  .lb-step--l{left:-15px}
  .lb-step--r{right:-15px}
  .lb-res{margin-top:28px}
  .lb-res__it{padding:20px 0}
  .lb-res__h{font-size:18px}
  .lb-res__h span{display:block;margin-top:2px}
  .lb-res__h span::before{content:none}
  .lb-res__b{padding-left:0}
  .lb-badge{position:static;margin-bottom:8px}
  .lb-res__t{font-size:15px}
  .lb-sh{font-size:22px}
  .lb-guide,.lb-tbl{margin-top:40px}
  .lb-prose{font-size:15px}
  .lb-t__sc th,.lb-t__sc td{padding:6px 9px}
}