:root {
  --bg: #f6f6f3;
  --panel: #ffffff;
  --ink: #1b1b1a;
  --muted: #6a6a64;
  --line: #deddd6;
  --accent: #3a5bd9;
  --accent-ink: #ffffff;
  --danger: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --panel: #20201e;
    --ink: #ededea;
    --muted: #a3a39c;
    --line: #34342f;
    --accent: #7c96ff;
    --accent-ink: #0e0e0d;
    --danger: #ff8a80;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.top { max-width: 1440px; margin: 0 auto; padding: 22px 20px 6px; }
.brand { font-weight: 700; font-size: 22px; letter-spacing: -0.01em; }
.logo { color: var(--accent); }
.tag { color: var(--muted); margin-top: 2px; }

/* Left-to-right workflow: Upload -> Settings -> Preview & print. */
.flow {
  max-width: 1440px; margin: 0 auto; padding: 12px 20px 40px;
  display: grid; grid-template-columns: 260px 24px 230px 24px minmax(0, 1fr); align-items: start;
}
.step {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px; display: flex; flex-direction: column; gap: 16px; min-height: 420px;
}
.step h2 { margin: 0; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.num {
  display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-size: 13px;
}
.arrow { align-self: start; margin-top: 190px; text-align: center; color: var(--muted); font-size: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.seg button {
  border: 1px solid var(--line); border-radius: 9px; background: transparent; color: var(--ink);
  padding: 10px 6px; font: inherit; cursor: pointer;
}
.seg button[aria-checked="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
select {
  font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line);
  border-radius: 9px; padding: 8px 10px;
}
.check { display: flex; gap: 8px; align-items: center; cursor: pointer; }

.drop {
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  cursor: pointer; min-height: 220px; border: 2px dashed var(--line); border-radius: 12px;
  padding: 20px 14px; transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--accent); }
.drop-icon { font-size: 30px; color: var(--accent); line-height: 1; }
.drop-main { font-size: 17px; font-weight: 600; margin-top: 8px; }
.drop-sub { color: var(--muted); margin-top: 4px; font-size: 13px; }
.files { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.files li {
  font-size: 13px; display: flex; justify-content: space-between; gap: 8px;
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px;
}
.files .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .count { color: var(--muted); white-space: nowrap; }

.bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
.summary { font-weight: 600; margin-top: -6px; }
.summary:empty { display: none; }
.empty {
  flex: 1; display: grid; place-items: center; color: var(--muted); text-align: center;
  border: 1px dashed var(--line); border-radius: 12px; min-height: 300px; padding: 16px;
}
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  font: inherit; font-weight: 600; border-radius: 9px; padding: 9px 16px; cursor: pointer;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn:disabled { opacity: .5; cursor: default; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.grid:empty { display: none; }

@media (max-width: 900px) {
  .flow { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .step { min-height: 0; }
  .arrow { margin: 4px 0; transform: rotate(90deg); }
}
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 10px;
  display: flex; flex-direction: column; gap: 8px;
}
.card.off .thumb { opacity: .35; }
.card .thumb { cursor: pointer; }
.card .thumb {
  background: #fff; border: 1px solid var(--line); border-radius: 4px;
  display: flex; align-items: center; justify-content: center; aspect-ratio: 4 / 6.5;
}
.card img { max-width: 100%; max-height: 100%; display: block; }
.card .meta { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .pick { display: flex; gap: 6px; align-items: center; cursor: pointer; color: var(--ink); }
.card .pick span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .pick input { width: 16px; height: 16px; flex: none; margin: 0; }
.check[hidden] { display: none; }
.card .row { display: flex; gap: 6px; }
.card .row button {
  flex: 1; font: inherit; font-size: 13px; padding: 5px 0; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--line); background: transparent; color: var(--ink);
}
.card .row button.icon { display: flex; align-items: center; justify-content: center; padding: 6px 0; }
.card .row button.icon:hover { border-color: var(--accent, #3b5bdb); color: var(--accent, #3b5bdb); }
.status { color: var(--muted); margin: 0; font-size: 13px; }
.status:empty { display: none; }
.status.err { color: var(--danger); }

#printArea { display: none; }
@media print {
  body > *:not(#printArea) { display: none !important; }
  body { background: #fff; }
  #printArea { display: block; }
  #printArea img { display: block; width: 100%; height: 100%; object-fit: contain; break-after: page; page-break-after: always; }
  #printArea img:last-child { break-after: auto; page-break-after: auto; }
}