/* Layout: one column — tabs (Make unique / Series check); drop zone, compact controls, then result cards that open a details panel */
:root{
  --bg:#eef1f4; --surface:#ffffff; --fg:#14202b; --muted:#5d6b78; --line:#d5dce3;
  --accent:#1d5fd1; --accent-fg:#ffffff; --ok:#1f8a55; --warn:#a86a00; --drop:#e3e9f0;
  --del:#c23b3b; --del-bg:#fbe9e9; --add:#1f8a55; --add-bg:#e5f5ec; --chg-bg:#fff4dc;
  --f-display:"Unbounded",system-ui,sans-serif;
  --f-body:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f151b; --surface:#17202a; --fg:#e6edf3; --muted:#93a2b1; --line:#2a3744;
  --accent:#5b93f0; --accent-fg:#0b1220; --ok:#4cc38a; --warn:#e0a640; --drop:#141d26;
  --del:#f08080; --del-bg:#3a1f22; --add:#5fd39b; --add-bg:#16332a; --chg-bg:#3a3020; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f151b; --surface:#17202a; --fg:#e6edf3; --muted:#93a2b1; --line:#2a3744;
  --accent:#5b93f0; --accent-fg:#0b1220; --ok:#4cc38a; --warn:#e0a640; --drop:#141d26;
  --del:#f08080; --del-bg:#3a1f22; --add:#5fd39b; --add-bg:#16332a; --chg-bg:#3a3020; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font:15px/1.5 var(--f-body);padding:32px 16px 64px}
.wrap{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:20px}
section{display:flex;flex-direction:column;gap:18px}
h1{font:700 26px/1.15 var(--f-display);margin:0;letter-spacing:-.01em;text-wrap:balance}
.sub{margin:6px 0 0;color:var(--muted);max-width:64ch}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line)}
.tabs button{border:0;background:none;color:var(--muted);font:600 15px var(--f-body);padding:10px 14px;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button[aria-selected="true"]{color:var(--fg);border-bottom-color:var(--accent)}
.drop{border:2px dashed var(--line);background:var(--drop);border-radius:14px;padding:32px 20px;text-align:center;cursor:pointer;transition:border-color .15s}
.drop:hover,.drop.over{border-color:var(--accent)}
.drop strong{display:block;font:600 18px/1.3 var(--f-display);margin-bottom:4px}
.drop span{color:var(--muted);font-size:14px}
.controls{display:flex;flex-wrap:wrap;gap:14px 22px;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--surface)}
.seg button{border:0;background:none;color:var(--fg);font:600 14px var(--f-body);padding:7px 14px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--accent);color:var(--accent-fg)}
select,input[type=text],textarea{font:14px var(--f-body);color:var(--fg);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px 10px;max-width:100%}
textarea{width:100%;resize:vertical;min-height:64px}
input[type=text]{width:100%}
details{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:0 14px}
details summary{cursor:pointer;padding:11px 0;font-weight:600;font-size:14px}
details .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;padding:4px 0 16px}
.chk{display:inline-flex;gap:8px;align-items:center;font-size:14px;cursor:pointer}
.chk input{accent-color:var(--accent);width:16px;height:16px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.bar p{margin:0;color:var(--muted);font-size:14px}
.bar .acts{display:flex;gap:8px;flex-wrap:wrap}
.btn{border:0;border-radius:10px;background:var(--accent);color:var(--accent-fg);font:700 14px var(--f-body);padding:10px 16px;cursor:pointer;white-space:nowrap}
.btn.ghost{background:none;color:var(--accent);border:1px solid var(--line)}
.btn.sm{padding:7px 12px;font-size:13px}
.btn:disabled{opacity:.5;cursor:default}
.list{display:flex;flex-direction:column;gap:14px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.item{display:grid;grid-template-columns:112px minmax(0,1fr) auto;gap:16px;align-items:center;padding:12px}
.item img{width:112px;height:84px;object-fit:cover;border-radius:8px;display:block;background:var(--drop)}
.item .acts{display:flex;flex-direction:column;gap:8px}
.name{font-weight:700;overflow-wrap:anywhere}
.name small{font-weight:400;color:var(--muted)}
.meta{font:12px/1.6 var(--f-mono);color:var(--muted);overflow-wrap:anywhere}
.meta b{color:var(--ok);font-weight:500}
.tag{display:inline-block;font:600 11px var(--f-body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 8px;margin-left:6px;vertical-align:2px}
.badge{display:inline-block;font:700 11px var(--f-body);text-transform:uppercase;letter-spacing:.06em;border-radius:999px;padding:2px 8px;margin-right:6px}
.badge.good{background:var(--add-bg);color:var(--add)}
.badge.warn{background:var(--chg-bg);color:var(--warn)}

.panel{border-top:1px solid var(--line);padding:16px 12px 18px;display:flex;flex-direction:column;gap:22px}
.block{display:flex;flex-direction:column;gap:10px}
.block h3{font:600 14px var(--f-display);margin:0}
.head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.stage{position:relative;width:100%;max-width:100%;background:var(--drop);border-radius:8px;overflow:hidden;user-select:none}
.stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;display:block}
.stage .after{clip-path:inset(0 0 0 var(--x,50%))}
.stage .line{position:absolute;top:0;bottom:0;left:var(--x,50%);width:2px;margin-left:-1px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.35);pointer-events:none}
.stage .knob{position:absolute;top:50%;left:var(--x,50%);width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;background:#fff;color:#14202b;display:grid;place-items:center;font:700 14px var(--f-body);box-shadow:0 1px 4px rgba(0,0,0,.35);pointer-events:none}
.stage input[type=range]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.stage .lab{position:absolute;top:8px;font:600 11px var(--f-body);text-transform:uppercase;letter-spacing:.08em;background:rgba(0,0,0,.55);color:#fff;padding:3px 8px;border-radius:999px;pointer-events:none}
.stage .lab.l{left:8px}.stage .lab.r{right:8px}
.side{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.side figure{margin:0;display:flex;flex-direction:column;gap:6px;min-width:0}
.side img{width:100%;border-radius:8px;display:block;background:var(--drop)}
.side figcaption,.note{font-size:12px;color:var(--muted);margin:0}
.diffwrap{display:flex;flex-direction:column;gap:8px}
.diffwrap canvas{width:100%;height:auto;display:block;border-radius:8px;background:var(--drop)}
.stats{display:flex;flex-wrap:wrap;gap:6px 18px;font:12px var(--f-mono);color:var(--muted)}
.stats b{color:var(--fg);font-weight:500}
.form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form .wide{grid-column:1/-1}

.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;font:12px/1.45 var(--f-mono)}
th,td{text-align:left;padding:6px 10px;border-bottom:1px solid var(--line);vertical-align:top;overflow-wrap:anywhere}
th{font:600 11px var(--f-body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);background:var(--drop)}
td:first-child{color:var(--muted);white-space:nowrap}
tr:last-child td{border-bottom:0}
tr.del td.was{background:var(--del-bg);color:var(--del);text-decoration:line-through}
tr.add td.now{background:var(--add-bg);color:var(--add)}
tr.chg td.was{background:var(--del-bg);color:var(--del)}
tr.chg td.now{background:var(--add-bg);color:var(--add)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px;vertical-align:-1px}

.group{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:12px}
.group h3{font:600 15px var(--f-display);margin:0}
.group.similar{border-left:4px solid var(--warn)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.thumbs figure{margin:0;display:flex;flex-direction:column;gap:4px;min-width:0}
.thumbs img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px;display:block;background:var(--drop)}
.thumbs figcaption{font:11px/1.4 var(--f-mono);color:var(--muted);overflow-wrap:anywhere}
.thumbs .keep img{outline:3px solid var(--ok);outline-offset:-3px}
.thumbs .keep figcaption b{color:var(--ok)}
.empty{color:var(--muted);font-size:14px;background:var(--surface);border:1px dashed var(--line);border-radius:12px;padding:20px;text-align:center}
@media (max-width:560px){.item{grid-template-columns:84px minmax(0,1fr)}.item img{width:84px;height:64px}.item .acts{grid-column:1/-1;flex-direction:row}.item .acts .btn{flex:1}.side,.form{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}