:root {
  --bg: #fafaf8; --fg: #1a1a1a; --mut: #6b6b66; --line: #e4e4de; --card: #fff; --ac: #1a1a1a; --acfg: #fff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #151514; --fg: #f0f0ea; --mut: #9a9a92; --line: #2e2e2b; --card: #1d1d1b; --ac: #f0f0ea; --acfg: #151514; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 17px; letter-spacing: -.01em; }
.privacy { margin: 0; color: var(--mut); font-size: 13px; }
main { max-width: 1280px; margin: 0 auto; padding: 20px; }

.drop { display: grid; place-items: center; text-align: center; gap: 2px; min-height: 60vh; border: 2px dashed var(--line); border-radius: 20px; cursor: pointer; padding: 40px 20px; color: var(--mut); transition: border-color .15s, background .15s; }
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--fg); background: var(--card); outline: none; }
.drop svg { color: var(--fg); margin-bottom: 8px; }
.drop h1 { margin: 0; font-size: 26px; letter-spacing: -.02em; color: var(--fg); }
.drop p { margin: 4px 0 0; }
.drop .sub { font-size: 13px; }

#work { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; align-items: start; }
#work[hidden] { display: none; }
.bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.files { display: flex; gap: 6px; flex-wrap: wrap; min-width: 0; }
.chip { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 999px; padding: 4px 12px; font: inherit; font-size: 13px; cursor: pointer; }
.chip.on { background: var(--ac); color: var(--acfg); border-color: var(--ac); }
.pager { display: flex; align-items: center; gap: 8px; color: var(--mut); font-variant-numeric: tabular-nums; }
.pager button { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line); background: var(--card); color: var(--fg); font-size: 18px; line-height: 1; cursor: pointer; }
.pager button:disabled { opacity: .35; cursor: default; }

.compare { position: relative; width: 100%; margin: 0 auto; height: max(420px, calc(100vh - 150px)); background: #888; border-radius: 12px; overflow: hidden; touch-action: none; cursor: ew-resize; user-select: none; box-shadow: 0 1px 3px #0002; }
.handle { position: absolute; top: 0; bottom: 0; width: 0; border-left: 2px solid #fff; box-shadow: 0 0 0 1px #0004; pointer-events: none; }
.handle span { position: absolute; top: 50%; left: -16px; width: 30px; height: 30px; margin-top: -15px; border-radius: 50%; background: #fff; box-shadow: 0 1px 4px #0006; }
.handle span::before { content: "‹ ›"; position: absolute; inset: 0; display: grid; place-items: center; color: #333; font-size: 13px; letter-spacing: 2px; }
.tag { position: absolute; top: 10px; font-style: normal; font-size: 12px; padding: 2px 8px; border-radius: 6px; background: #000a; color: #fff; pointer-events: none; }
.tag.l { left: 10px; } .tag.r { right: 10px; }
.busy { position: absolute; inset: 0; display: grid; place-items: center; background: #0006; color: #fff; }
.busy[hidden] { display: none; }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px; display: grid; gap: 14px; position: sticky; top: 16px; }
.seg { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 3px; gap: 3px; }
.seg button { border: 0; background: none; color: var(--mut); font: inherit; font-size: 13px; padding: 6px 4px; border-radius: 7px; cursor: pointer; }
.seg button.on { background: var(--ac); color: var(--acfg); }
label { display: grid; grid-template-columns: 1fr auto; gap: 4px 8px; font-size: 13px; }
label output { color: var(--mut); font-variant-numeric: tabular-nums; }
label input, label small { grid-column: 1 / -1; }
label small { color: var(--mut); font-size: 12px; }
input[type=range] { width: 100%; accent-color: var(--ac); margin: 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 0; width: 100%; }

.primary { background: var(--ac); color: var(--acfg); border: 0; border-radius: 12px; padding: 12px; font: inherit; font-weight: 600; cursor: pointer; }
.primary:disabled { opacity: .5; cursor: progress; }
.ghost { background: none; border: 0; color: var(--mut); font: inherit; font-size: 13px; cursor: pointer; text-decoration: underline; }
.progress { position: relative; height: 34px; border-radius: 10px; background: var(--bg); border: 1px solid var(--line); overflow: hidden; }
.progress[hidden] { display: none; }
.progress i { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--line); transition: width .2s; }
.progress span { position: relative; display: block; padding: 6px 10px; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.note { margin: 0; font-size: 12px; color: var(--mut); }

@media (max-width: 860px) {
  #work { grid-template-columns: 1fr; }
  .panel { position: static; }
  .privacy { display: none; }
  main { padding: 16px; }
}

[hidden] { display: none !important; }

.estimate { margin: 0; font-size: 13px; color: var(--mut); min-height: 1.4em; }
.estimate b { color: var(--fg); }

.layer { position: absolute; left: 0; top: 0; transform-origin: 0 0; will-change: transform; }
.layer canvas { position: absolute; left: 0; top: 0; width: auto; height: auto; inset: auto; }
.layer.px canvas { image-rendering: pixelated; }
.zoombar { position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%); display: flex; align-items: center; gap: 2px; background: #000b; color: #fff; border-radius: 10px; padding: 3px; cursor: default; font-size: 12px; }
.zoombar span { min-width: 44px; text-align: center; font-variant-numeric: tabular-nums; }
.zoombar button { background: none; border: 0; color: #fff; font: inherit; padding: 4px 9px; border-radius: 7px; cursor: pointer; }
.zoombar button:hover { background: #fff3; }