/* Layout: working column (tabs + pages) with a sticky settings card on the right; stacks on phones. */
:root{
  --bg:#f3f5f9; --paper:#ffffff; --fg:#1b2333; --muted:#4f5a70; --line:#d5dceb; --rule:#b9cdea;
  --accent:#1f3fd1; --warn:#a4560a; --warnbg:#fff4e5; --bad:#c2392f; --ok:#1d7a4a; --chip:#e8edf8;
  --ui:"IBM Plex Sans Thai",system-ui,-apple-system,"Thonburi",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
@media (prefers-color-scheme: dark){:root{
  --bg:#12161f; --paper:#1a2030; --fg:#e7ebf5; --muted:#a3adc4; --line:#2c3549; --rule:#33507e;
  --accent:#8fa8ff; --warn:#ffc27a; --warnbg:#3a2a12; --bad:#ff7d72; --ok:#5fc48d; --chip:#232b3e; color-scheme:dark}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{background:var(--bg);color:var(--fg);font-family:var(--ui);font-size:15px;line-height:1.55}
.wrap{max-width:1180px;margin:0 auto;padding-block:20px 60px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));display:grid;gap:16px}
h1{font-size:1.5rem;font-weight:600;margin:0}
h2{font-size:1.02rem;font-weight:600;margin:0}
.muted{color:var(--muted)} .small{font-size:.84rem}
.head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:end}
.head p{margin:4px 0 0;max-width:60ch}
.pin{display:flex;gap:8px;align-items:center}
.pin input{width:150px}
input,select,textarea{font:inherit;color:var(--fg);background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:7px 10px}
textarea{width:100%;resize:vertical}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line)}
.tabs button{border:0;border-bottom:2px solid transparent;border-radius:0;background:none;padding:8px 14px;font-weight:500;color:var(--muted)}
.tabs button[aria-selected=true]{color:var(--fg);border-bottom-color:var(--accent)}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:16px;align-items:start}
@media (max-width:860px){.layout{grid-template-columns:1fr}}
main{min-width:0}
.card{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:14px;display:grid;gap:12px;min-width:0}
.side{position:sticky;top:12px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.right{margin-left:auto}
button{font:inherit;font-size:.92rem;border:1px solid var(--line);background:var(--paper);color:var(--fg);border-radius:8px;padding:7px 12px;cursor:pointer}
button.primary{background:var(--accent);border-color:var(--accent);color:var(--paper)}
button:disabled{opacity:.45;cursor:not-allowed}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.ctl{display:grid;gap:3px}
.ctl label{display:flex;justify-content:space-between;font-size:.88rem}
.ctl output{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--muted)}
input[type=range]{width:100%;accent-color:var(--accent);padding:0;border:0}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:0;border-radius:0;flex:1}
.seg button[aria-pressed=true]{background:var(--chip);font-weight:600}
.pages{display:grid;gap:14px}
.page{background:#fff;border:1px solid var(--line);border-radius:4px;box-shadow:0 1px 3px rgba(20,30,60,.08);max-width:100%}
.page svg,.page canvas{display:block;width:100%;height:auto}
.files{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:560px){.files{grid-template-columns:1fr}}
.drop{display:grid;gap:3px;border:1.5px dashed var(--line);border-radius:10px;padding:12px;cursor:pointer}
.drop span{font-weight:600}
.drop input{font-size:.85rem;border:0;padding:4px 0;background:none}
.gate{border:1px solid var(--warn);background:var(--warnbg);border-radius:10px;padding:12px;display:grid;gap:8px}
.gate h3{margin:0;font-size:.98rem;color:var(--warn)}
.miss{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:6px 0;border-top:1px solid var(--line)}
.miss .ch{font-size:1.5rem;min-width:2.2rem;text-align:center;font-family:var(--mono)}
.flag{display:grid;grid-template-columns:minmax(0,1fr);gap:6px;padding:10px 0;border-top:1px solid var(--line)}
.flag img{max-width:100%;max-height:90px;background:#fff;border:1px solid var(--line);border-radius:6px;justify-self:start}
.flag .why{font-size:.86rem;color:var(--warn)}
.flag.done{opacity:.6}
.flag.done .why{color:var(--ok)}
.flag input{width:100%}
.big{font-size:1.6rem;font-family:var(--mono)}
dialog{border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--fg);max-width:min(96vw,700px);padding:0}
dialog::backdrop{background:rgba(10,15,30,.45)}
.padform{padding:16px;display:grid;gap:10px}
#padCanvas{width:100%;height:auto;background:#fff;border:1px solid var(--line);border-radius:8px;touch-action:none;cursor:crosshair}
details summary{cursor:pointer;color:var(--muted)}
.prog{display:flex;gap:10px;align-items:center}
.progbar{flex:1;height:10px;background:var(--chip);border-radius:99px;overflow:hidden}
#progFill,.progbar .fill{height:100%;width:0;background:var(--accent);border-radius:99px}
@media (prefers-reduced-motion:no-preference){#progFill{transition:width .35s ease}}
#progPct,.pct{font-family:var(--mono);font-variant-numeric:tabular-nums;min-width:3.5ch;text-align:right}
.field{display:grid;gap:6px;padding:10px 0;border-top:1px solid var(--line)}
.field .lab{font-weight:600}
.field .src{font-size:.8rem;color:var(--muted);overflow-wrap:anywhere}
.field .ask{font-size:.86rem;color:var(--warn)}
.field.done .ask,.field.done .why{color:var(--ok)}
.field textarea{min-height:44px}
.memrow{display:flex;gap:6px;align-items:flex-start;padding:5px 0;border-top:1px solid var(--line);font-size:.84rem}
.memrow span{flex:1;min-width:0;overflow-wrap:anywhere}
.memrow button{padding:1px 8px;font-size:.8rem}
#mem h4{margin:8px 0 2px;font-size:.84rem;color:var(--muted)}