:root {
  --bg: #f6f6f4; --card: #ffffff; --fg: #1b1b1a; --muted: #6b6b66; --line: #e5e4df;
  --accent: #ee4d2d; --accent-soft: #fdece8; --good: #14804a; --good-soft: #e7f5ed; --warn: #9a6200; --warn-soft: #fdf3dc;
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141413; --card: #1e1e1c; --fg: #ecebe6; --muted: #a09f98; --line: #33332f;
    --accent: #ff6b4d; --accent-soft: #3a1f19; --good: #4cc387; --good-soft: #15291e; --warn: #f0b545; --warn-soft: #33280f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #141413; --card: #1e1e1c; --fg: #ecebe6; --muted: #a09f98; --line: #33332f;
  --accent: #ff6b4d; --accent-soft: #3a1f19; --good: #4cc387; --good-soft: #15291e; --warn: #f0b545; --warn-soft: #33280f;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 1080px; margin: 0 auto; padding: 28px 16px 64px; display: grid; gap: 18px; }
h1 { margin: 0; font-size: 26px; letter-spacing: -0.01em; }
h2 { margin: 0 0 10px; font-size: 16px; }
.sub { margin: 6px 0 0; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; min-width: 0; }
.row-between { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

.drop { border: 2px dashed var(--line); border-radius: var(--radius); background: var(--card); padding: 30px 16px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s; }
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--accent); background: var(--accent-soft); outline: none; }
.drop-inner { display: grid; gap: 6px; justify-items: center; }
.drop svg { width: 34px; height: 34px; fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.btn { font: inherit; font-weight: 600; border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 9px; padding: 8px 14px; cursor: pointer; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(.95); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: default; }

.files { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 6px; }
.files li { display: flex; gap: 10px; align-items: center; border: 1px solid var(--line); border-radius: 9px; padding: 8px 10px; }
.files .ic { width: 20px; text-align: center; font-weight: 700; }
.files .ok .ic { color: var(--good); }
.files .err .ic, .files .err .meta { color: var(--accent); }
.files .name { font-weight: 600; overflow-wrap: anywhere; }
.files .meta { font-size: 13px; color: var(--muted); }
.files .grow { flex: 1; min-width: 0; }
.files .x { border: 0; background: none; color: var(--muted); font-size: 18px; cursor: pointer; padding: 0 4px; }
.progress { margin-top: 10px; font-size: 13px; color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; display: grid; gap: 4px; min-width: 0; }
.stat span { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.stat b { font-size: 22px; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.stat.accent { background: var(--accent-soft); border-color: transparent; }
.stat.accent b { color: var(--accent); }
.stat.good { background: var(--good-soft); border-color: transparent; }
.stat.good b { color: var(--good); }
.actions.wrap { margin-top: 2px; }

.kv { border-collapse: collapse; width: 100%; max-width: 560px; font-variant-numeric: tabular-nums; }
.kv td { padding: 5px 0; border-bottom: 1px solid var(--line); }
.kv td:last-child { text-align: right; font-weight: 600; padding-left: 16px; }
.warn { background: var(--warn-soft); color: var(--warn); border-radius: 9px; padding: 8px 12px; margin-bottom: 10px; font-size: 14px; }
.note { margin-top: 12px; font-size: 14px; color: var(--muted); }
.note summary { cursor: pointer; font-weight: 600; color: var(--fg); }
.note li { margin: 4px 0; }

.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 10px; }
.tab { font: inherit; font-size: 14px; border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.tab[aria-selected="true"] { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.tab small { opacity: .7; }
input[type="search"] { font: inherit; border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 9px; padding: 7px 10px; width: 220px; max-width: 100%; }
.table-wrap { overflow-x: auto; }
.grid { border-collapse: collapse; width: 100%; min-width: 720px; font-size: 14px; }
.grid th { text-align: left; font-size: 12px; color: var(--muted); font-weight: 600; padding: 6px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.grid td { padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.grid td.num, .grid th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.grid td.mono { font-family: ui-monospace, Menlo, monospace; font-size: 13px; white-space: nowrap; }
.grid .empty { text-align: center; color: var(--muted); padding: 20px; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 10px; font-size: 14px; color: var(--muted); }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--fg); color: var(--bg); padding: 9px 16px; border-radius: 9px; font-size: 14px; box-shadow: 0 6px 24px rgba(0,0,0,.18); }

@media (max-width: 760px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat b { font-size: 18px; }
  h1 { font-size: 22px; }
}

/* phần tử con của grid không tự nở theo bảng rộng (bảng tự cuộn ngang trong khung) */
main > * { min-width: 0; }
#result { display: grid; gap: 18px; }
#result[hidden] { display: none; }
@media (max-width: 760px) {
  .stat { padding: 12px; }
  .stat b { font-size: 16px; white-space: nowrap; overflow-wrap: normal; }
}
.dedup { background: var(--good-soft); color: var(--good); border-radius: 9px; padding: 10px 14px; margin-bottom: 14px; font-size: 14px; }