[hidden]{display:none!important}
/* Layout: packing-line tool — sticky tab bar, one working column; form mirrors the paper sheet (bottle | box) */
:root{
  --bg:#EEF1F0; --surface:#FFFFFF; --sunken:#F5F7F6; --ink:#16211F; --muted:#5D6B68; --line:#CBD4D1; --line-strong:#16211F;
  --accent:#0B6E5F; --accent-ink:#FFFFFF; --accent-soft:#DDEFEA; --warn:#9A5B00; --warn-soft:#FFF1D6; --bad:#B3261E; --bad-soft:#FBE3E1; --ok:#1F7A3A;
  --f-body:"IBM Plex Sans Thai",system-ui,"Leelawadee UI","Tahoma",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"Consolas",monospace;
  --r:10px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0F1514; --surface:#18201F; --sunken:#121918; --ink:#E6EEEC; --muted:#93A39F; --line:#2E3B39; --line-strong:#A9B8B4;
  --accent:#4CC2AC; --accent-ink:#06211C; --accent-soft:#173A34; --warn:#F2B451; --warn-soft:#3A2C12; --bad:#FF8A80; --bad-soft:#3D1A18; --ok:#6FD08E; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0F1514; --surface:#18201F; --sunken:#121918; --ink:#E6EEEC; --muted:#93A39F; --line:#2E3B39; --line-strong:#A9B8B4;
  --accent:#4CC2AC; --accent-ink:#06211C; --accent-soft:#173A34; --warn:#F2B451; --warn-soft:#3A2C12; --bad:#FF8A80; --bad-soft:#3D1A18; --ok:#6FD08E; color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.55}
.wrap{max-width:980px;margin:0 auto;padding-inline:16px;padding-block:0 48px}
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
.top-in{max-width:980px;margin:0 auto;padding:12px 16px 0;display:flex;flex-direction:column;gap:10px}
.brand{display:flex;align-items:center;gap:10px;justify-content:space-between;flex-wrap:wrap}
.brand h1{font-size:19px;margin:0;font-weight:700;letter-spacing:.01em}
.brand h1 small{font-weight:500;color:var(--muted);font-size:13px;margin-left:6px}
.conn{font-size:12px;padding:3px 10px;border-radius:99px;border:1px solid var(--line);color:var(--muted);display:inline-flex;gap:6px;align-items:center}
.conn::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--muted)}
.conn.on::before{background:var(--ok)} .conn.off::before{background:var(--bad)}
nav.tabs{display:flex;gap:4px;overflow-x:auto}
nav.tabs button{font:inherit;font-weight:600;border:0;background:none;color:var(--muted);padding:8px 14px 10px;border-bottom:3px solid transparent;cursor:pointer;white-space:nowrap}
nav.tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--accent)}
nav.tabs .count{font-family:var(--f-mono);font-size:12px;color:var(--muted);margin-left:4px}

section.view{padding-top:20px;display:flex;flex-direction:column;gap:16px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.label{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:600}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.hint{font-size:13px;color:var(--muted);margin:0}
input[type=text],select{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 11px;min-width:0}
input[type=text]:focus,select:focus,button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
input.mono{font-family:var(--f-mono);letter-spacing:.04em}
.btn{font:inherit;font-weight:600;border-radius:8px;padding:9px 16px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.btn:hover{border-color:var(--line-strong)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:disabled{opacity:.55;cursor:default}
.btn.danger{color:var(--bad);border-color:var(--bad)}
.btn.small{padding:5px 10px;font-size:13px}

/* Lot card */
.lotcard{display:flex;flex-direction:column;gap:10px}
.lotline{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.lotline select{flex:1 1 220px;font-family:var(--f-mono);font-weight:600;font-size:16px}
.lotmeta{font-size:13px;color:var(--muted)}
.newlot{display:flex;gap:8px;flex-wrap:wrap;padding:12px;border:1px dashed var(--line);border-radius:8px;background:var(--sunken)}
.newlot input{flex:1 1 200px}

/* Paper-like sheet grid, shared by the entry form and the form view */
.sheet{background:var(--surface);border:1.5px solid var(--line-strong);border-radius:4px;overflow:hidden}
.sheet .lothead{text-align:center;padding:12px 10px;border-bottom:1.5px solid var(--line-strong);font-weight:600;font-size:16px}
.sheet .lothead .mono{font-family:var(--f-mono);text-decoration:underline;text-underline-offset:4px}
.sheet .lothead .sub{display:block;font-weight:400;font-size:12.5px;color:var(--muted)}
.cols{display:grid;grid-template-columns:1fr 1fr}
.col{display:flex;flex-direction:column;min-width:0}
.col + .col{border-left:1.5px solid var(--line-strong)}
.col .h{padding:10px 12px;text-align:center;font-weight:600;border-bottom:1px solid var(--line-strong)}
.col .q{padding:10px 12px;border-bottom:1px solid var(--line-strong);display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center;font-size:14px}
.col .q .code{font-family:var(--f-mono);font-weight:600;text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
.col .q input{width:7.5em;text-align:center}
.col .q input.wide{width:100%;max-width:16em}
.col .p{padding:14px;flex:1;display:flex;flex-direction:column;gap:10px;align-items:stretch}
.shot{aspect-ratio:4/3;max-width:100%;border:1px solid var(--line-strong);background:var(--sunken);display:grid;place-items:center;overflow:hidden;position:relative;color:var(--muted);font-size:14px}
.shot img{width:100%;height:100%;object-fit:contain;cursor:zoom-in;display:block}
.shot .clear{position:absolute;top:6px;right:6px;background:var(--surface);border:1px solid var(--line);border-radius:6px;font:inherit;font-size:12px;padding:2px 8px;cursor:pointer;color:var(--ink)}
.shotbtns{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.shotbtns label{cursor:pointer}
.shotbtns input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.sheet + .sheet{margin-top:0}
.sheetstack{display:flex;flex-direction:column;gap:0}
.sheetstack .sheet{border-radius:0}
.sheetstack .sheet:not(:first-child){border-top:0}
.sheetstack .sheet:first-child{border-radius:4px 4px 0 0}
.sheetstack .sheet:last-child{border-radius:0 0 4px 4px}
.formno{font-size:14px;font-weight:600;margin:0 0 6px}

.savebar{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.msg{font-size:14px;padding:8px 12px;border-radius:8px}
.msg.ok{background:var(--accent-soft);color:var(--ink)}
.msg.warn{background:var(--warn-soft);color:var(--warn)}
.msg.bad{background:var(--bad-soft);color:var(--bad)}
.editbar{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;font-weight:600}
.sheet.editing{outline:3px solid var(--warn);outline-offset:-1px}
.setnav{display:flex;gap:6px;align-items:center;flex:1 1 240px;min-width:0}
.setnav select{flex:1;min-width:0;font-family:var(--f-mono)}
.setnav .btn{padding:8px 14px;font-size:17px;line-height:1}
.setnav .btn:disabled{opacity:.4;cursor:default}
.lothead .acts{display:flex;gap:6px;justify-content:center;margin-top:6px}

/* Table */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:720px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:12px;letter-spacing:.05em;color:var(--muted);font-weight:600;background:var(--sunken)}
td.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
tr:last-child td{border-bottom:0}
.pill{display:inline-block;font-family:var(--f-mono);font-size:12.5px;font-weight:600;background:var(--accent-soft);padding:2px 8px;border-radius:99px}
.empty{padding:28px 16px;text-align:center;color:var(--muted)}
.empty strong{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}
.tools{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.tools input{flex:1 1 220px}
.stats{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.stats b{font-family:var(--f-mono);color:var(--ink);font-size:15px}

.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.82);z-index:50;display:grid;place-items:center;padding:16px;cursor:zoom-out}
.lightbox img{max-width:100%;max-height:100%;object-fit:contain}

@media (max-width:640px){
  .cols{grid-template-columns:1fr}
  .col + .col{border-left:0;border-top:1.5px solid var(--line-strong)}
}
@media (prefers-reduced-motion:no-preference){.btn,nav.tabs button{transition:border-color .15s,color .15s}}

/* Server version additions: sign-in, account, users */
html,body{margin:0}
input[type=password]{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 11px;min-width:0}
input[type=password]:focus{outline:2px solid var(--accent);outline-offset:1px}
img{max-width:100%}
.who{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.who b{color:var(--ink);font-weight:600}
.gate{min-height:100vh;display:grid;place-items:center;padding:24px 16px}
.gate .card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;gap:12px}
.gate h1{font-size:20px;margin:0}
.gate label,.field{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted);font-weight:600}
.gate input{font-size:16px}
.formgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;align-items:end}
.role{font-size:12px;font-weight:600;padding:2px 8px;border-radius:99px;background:var(--sunken);border:1px solid var(--line)}
.role.admin{background:var(--accent-soft);border-color:transparent}
.off{color:var(--muted);text-decoration:line-through}
.inline{display:inline-flex;gap:6px;align-items:center;flex-wrap:wrap}
.inline input{width:9em}
h2.sec{font-size:16px;margin:0}
a.btn{display:inline-block;text-decoration:none;text-align:center}
a.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}