:root {
  --bg: #f6f7f9; --card: #fff; --text: #16181d; --muted: #667085; --line: #e3e6eb;
  --accent: #2f6fed; --accent-2: #1f55c4; --ok: #12a150; --err: #d92d20;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1115; --card: #171a21; --text: #e8eaee; --muted: #98a2b3; --line: #2a2f3a;
          --accent: #4c86ff; --accent-2: #6b9bff; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
       font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { margin: 0; font-size: 28px; }
.sub { margin: 4px 0 0; color: var(--muted); }
.sys { margin: 4px 0 24px; color: var(--muted); font-size: 12px; }
.drop { border: 2px dashed var(--line); border-radius: 14px; background: var(--card);
        padding: 36px 16px; text-align: center; cursor: pointer; display: flex;
        flex-direction: column; gap: 4px; transition: .15s; }
.drop span { color: var(--muted); font-size: 14px; }
.drop.over, .drop:hover { border-color: var(--accent); }
.files { list-style: none; padding: 0; margin: 16px 0 0; }
.files li { display: flex; align-items: center; gap: 12px; background: var(--card);
            border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; }
.files .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .size { color: var(--muted); font-size: 13px; }
.files button { border: 0; background: none; color: var(--muted); font-size: 18px; cursor: pointer; }
.files button:hover { color: var(--err); }
.errors { color: var(--err); white-space: pre-line; margin: 4px 0; }
.controls { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; margin-top: 16px; }
.controls label { display: flex; align-items: center; gap: 8px; }
.controls select, .controls input[type=number] { padding: 8px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--text); font-size: 15px; }
.controls input[type=number] { width: 80px; }
.card { margin-top: 20px; background: var(--card); border: 1px solid var(--line);
        border-radius: 14px; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.card h2 { margin: 0; font-size: 17px; }
.card .hint, .hint { color: var(--muted); font-size: 13px; font-weight: normal; }
.card > .hint { margin: -8px 0 0; }
.card label { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.card label.block, .card .block { display: flex; flex-direction: column; align-items: stretch; gap: 6px; }
.card .row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.card select, .card input.num, textarea { padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--bg); color: var(--text); font: inherit; }
.card input.num { width: 70px; }
textarea { width: 100%; resize: vertical; font-size: 14px; }
button.small { padding: 5px 10px; font-size: 13px; }
.files.small { margin: 0; }
.files.small li { padding: 6px 10px; margin-bottom: 4px; }
.summary { flex-basis: 100%; margin: 0; color: var(--muted); font-size: 14px; }
.actions { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
button, .btn { font: inherit; border-radius: 10px; padding: 10px 18px; cursor: pointer;
               text-decoration: none; display: inline-block; }
.primary { background: var(--accent); color: #fff; border: 0; font-weight: 600; }
.primary:hover { background: var(--accent-2); }
.primary:disabled { opacity: .45; cursor: not-allowed; }
.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
.job { margin-top: 24px; background: var(--card); border: 1px solid var(--line);
       border-radius: 14px; padding: 16px; }
.bar { position: relative; height: 22px; border-radius: 11px; background: var(--line); overflow: hidden; margin-top: 12px; }
.bar > div { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.bar > span { position: absolute; inset: 0; text-align: center; font-size: 12px; line-height: 22px; font-weight: 600; }
.bar.done > div { background: var(--ok); }
.bar.error > div { background: var(--err); }
details { margin-top: 12px; }
pre { max-height: 260px; overflow: auto; font-size: 12px; white-space: pre-wrap; }
.hidden { display: none !important; }

.login { max-width: 380px; padding-top: 80px; }
.login form { margin-top: 20px; }
.login input { padding: 10px; border-radius: 8px; border: 1px solid var(--line);
               background: var(--bg); color: var(--text); font: inherit; }
.userbar { float: right; font-size: 13px; color: var(--muted); margin-top: 8px; }
.userbar a { color: var(--accent); margin-left: 8px; }