:root{
  --bg:#f5f7fb; --card:#fff; --text:#172033; --muted:#687386;
  --border:#e1e6ef; --accent:#2457ff; --accent2:#1745d1;
  --shadow:0 18px 50px rgba(20,35,70,.09); --radius:22px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text)}
.app{width:min(720px,calc(100% - 28px));margin:38px auto 28px}
header{text-align:center;margin-bottom:22px;position:relative}
.language-toggle{position:absolute;right:0;top:0;z-index:2;padding:8px 12px;border-radius:999px;background:#eef1f6;color:var(--accent);font-size:12px;min-width:44px}
.language-toggle:hover{background:#e5ebfb}
.brand{font-size:32px;font-weight:850;letter-spacing:-1.5px}
.brand span{font-weight:500}
header p{color:var(--muted);margin:8px 0 0}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.drop-zone{border:2px dashed #cbd4e4;border-radius:18px;padding:48px 18px;text-align:center;transition:.2s}
.drop-zone.drag{border-color:var(--accent);background:#f4f7ff}
.drop-icon{width:58px;height:58px;border-radius:50%;background:#eef3ff;color:var(--accent);display:grid;place-items:center;font-size:35px;margin:0 auto 12px}
h2{margin:0 0 6px;font-size:24px}
.drop-zone p{margin:0 0 20px;color:var(--muted)}
.drop-zone small{display:block;color:#8b95a7;margin-top:13px}
button{border:0;border-radius:12px;padding:12px 16px;font-weight:750;cursor:pointer;font-size:14px}
button:disabled{opacity:.55;cursor:not-allowed}
.primary{background:var(--accent);color:#fff}
.primary:hover{background:var(--accent2)}
.secondary{background:#eef1f6;color:var(--text)}
.full{width:100%;margin-top:18px;padding:14px}
.preview-wrap{height:260px;border-radius:16px;overflow:hidden;background:#eef1f5;display:grid;place-items:center}
.preview-wrap img{width:100%;height:100%;object-fit:contain}
.stats,.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0 22px}
.stats>div,.result-grid>div{background:#f7f8fb;border-radius:12px;padding:12px}
.stats span,.result-grid span{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}
.stats strong,.result-grid strong{font-size:14px}
.label{font-size:13px;font-weight:800;display:block;margin-bottom:9px}
.size-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.size-grid button{background:#f1f3f7;border:1px solid transparent}
.size-grid button.selected{background:#eaf0ff;color:var(--accent);border-color:#b8c8ff}
.custom-row{display:flex;gap:8px;margin-top:9px}
.custom-row input{min-width:0;flex:1;border:1px solid var(--border);border-radius:11px;padding:12px;font-size:14px}
.custom-row button{background:#eef1f6}
.progress{margin-top:16px}
.progress-bar{height:8px;background:#edf0f5;border-radius:99px;overflow:hidden}
.progress-bar>div{height:100%;width:0;background:var(--accent);transition:width .15s}
.progress span{display:block;color:var(--muted);font-size:12px;margin-top:7px;text-align:center}
.result{margin-top:18px;border-top:1px solid var(--border);padding-top:18px}
.result-title{font-weight:850;margin-bottom:10px}
.note{font-size:13px;color:var(--muted);margin:0 0 12px}
.actions{display:flex;gap:9px}
.actions button{flex:1}
footer{display:flex;justify-content:center;gap:18px;color:#7a8495;font-size:12px;margin-top:16px}
.hidden{display:none!important}
@media(max-width:520px){
 .app{margin-top:18px}.card{padding:14px}.drop-zone{padding:34px 12px}
 .stats,.result-grid{grid-template-columns:1fr 1fr}
 .stats>div:last-child{grid-column:span 2}
 .size-grid{grid-template-columns:repeat(2,1fr)}
 footer{flex-wrap:wrap}
}

.file-count{display:flex;justify-content:space-between;align-items:center;margin:0 0 12px;font-size:13px;color:var(--muted)}
.file-count strong{color:var(--text)}
.batch-list{margin-top:12px;display:grid;gap:8px}
.batch-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 12px;background:#f7f8fb;border-radius:12px}
.batch-row strong{display:block;font-size:13px;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.batch-row small{display:block;color:var(--muted);font-size:11px;margin-top:3px}
.mini-download{padding:8px 10px;font-size:11px;background:#eaf0ff;color:var(--accent);white-space:nowrap}
.note{white-space:pre-line}
\n.preview-grid{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:10px;
}\n.preview-tile{position:relative;min-height:0;border-radius:12px;overflow:hidden;background:#e7ebf1;border:1px solid #dce2eb}\n.preview-tile img{width:100%;height:100%;object-fit:cover;display:block}\n.preview-tile span{position:absolute;left:6px;bottom:6px;background:rgba(0,0,0,.65);color:#fff;border-radius:7px;padding:3px 6px;font-size:11px;font-weight:700}\n.batch-hint{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);background:rgba(23,32,51,.78);color:#fff;border-radius:999px;padding:6px 11px;font-size:12px;white-space:nowrap}\n.preview-wrap{position:relative}\n@media(max-width:520px){.preview-grid{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:10px;
}.batch-hint{font-size:11px}}\n
/* v0.6 batch preview */
 .batch-preview{
  min-height:0;
  height:auto;
  padding:12px;
  display:block;
  overflow:hidden;
}
.preview-grid{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:10px;
}
.preview-tile{
  position:relative;
  aspect-ratio:1/1;
  overflow:hidden;
  border-radius:13px;
  background:#e9edf3;
  border:1px solid #dce2eb;
}
.preview-tile img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.preview-index{
  position:absolute;
  left:7px;
  top:7px;
  min-width:24px;
  height:24px;
  padding:0 6px;
  border-radius:99px;
  display:grid;
  place-items:center;
  background:rgba(20,32,51,.78);
  color:#fff;
  font-size:12px;
  font-weight:800;
}
.preview-more{
  display:grid;
  place-items:center;
  height:100%;
  color:#5d6879;
  font-weight:800;
  font-size:14px;
  background:#eef1f6;
}
@media(max-width:620px){
  .preview-grid{
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:10px;
}
   .batch-preview{
  min-height:0;
  height:auto;
  padding:12px;
  display:block;
  overflow:hidden;
}
}

/* v0.7 batch statistics + progress */
.batch-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.batch-stat{background:#f7f8fb;border-radius:12px;padding:12px}
.batch-stat span{display:block;color:#687386;font-size:12px;margin-bottom:5px}
.batch-stat strong{font-size:15px}
.batch-progress{margin-top:16px;padding:14px;background:#f7f8fb;border-radius:14px}
.batch-progress-head{display:flex;justify-content:space-between;gap:10px;font-weight:800;font-size:13px;margin-bottom:8px}
.batch-progress-bar{height:9px;background:#e5e9f0;border-radius:99px;overflow:hidden}
.batch-progress-bar>div{height:100%;width:0;background:#2457ff;transition:width .2s}
.batch-status-list{margin-top:10px;max-height:210px;overflow:auto;display:grid;gap:6px}
.batch-status{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:8px 10px;background:#fff;border-radius:9px;font-size:12px}
.batch-status .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.batch-status .state{font-weight:800;white-space:nowrap}
.batch-status.ok .state{color:#177245}
.batch-status.work .state{color:#2457ff}
.batch-status.fail .state{color:#b42318}
.savings{font-weight:800}
@media(max-width:620px){
  .preview-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .batch-stats{grid-template-columns:1fr 1fr}
}

/* v0.9 compact preview */
.batch-preview{padding:10px;min-height:0;height:auto}
.preview-grid{margin:0}

.heic-notice{margin:12px 0;padding:12px 14px;border-radius:12px;background:#eef3ff;border:1px solid #cbd8ff;color:#2346a4;font-size:13px}
.heic-notice strong{display:block;margin-bottom:3px}
.heic-notice span{color:#52627a}
.batch-progress.complete{background:#f4fbf6}


/* v0.19 — compact, proportional single-image preview */
#previewWrap,
.preview-wrap {
  height: min(460px, 52vh) !important;
  min-height: 280px !important;
  max-height: 460px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  overflow: hidden !important;
  padding: 12px !important;
  box-sizing: border-box !important;
}

#previewWrap img#preview,
#preview {
  width: auto !important;
  height: auto !important;
  min-width: 0 !important;
  min-height: 0 !important;
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain !important;
  object-position: center !important;
  display: block !important;
  border-radius: 16px !important;
}

@media (max-width: 700px) {
  #previewWrap,
  .preview-wrap {
    height: min(380px, 55vh) !important;
    min-height: 220px !important;
    max-height: 380px !important;
  }
}