:root {
  --bg: #f3f4f7;
  --card: #ffffff;
  --text: #1c2230;
  --muted: #677086;
  --line: #e2e5ec;
  --accent: #2f5bea;
  --accent-ink: #ffffff;
  --ok: #18865a;
  --err: #c2372f;
  --soft: #f6f7fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c; --card: #1a1e27; --text: #e7e9ef; --muted: #98a0b3;
    --line: #2b3140; --accent: #6d8dff; --accent-ink: #0d1020; --ok: #3cc58b; --err: #ff7a70; --soft: #222734;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font: 15px/1.5 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  display: flex; justify-content: center; align-items: flex-start; padding: 48px 16px;
}
.card {
  width: 100%; max-width: 620px; background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; padding: 28px 32px 32px; box-shadow: 0 6px 30px rgba(20, 30, 60, .06);
}
header { margin-bottom: 22px; }
.brand { font-weight: 600; font-size: 13px; color: var(--muted); letter-spacing: .02em; }
.steps { list-style: none; display: flex; gap: 6px; padding: 0; margin: 12px 0 0; counter-reset: s; }
.steps li {
  flex: 1; font-size: 12px; color: var(--muted); padding-top: 8px; border-top: 3px solid var(--line);
  counter-increment: s;
}
.steps li::before { content: counter(s) ". "; }
.steps li.active, .steps li.past { color: var(--text); border-top-color: var(--accent); }
.steps li.past { color: var(--muted); }
h1 { font-size: 22px; margin: 0 0 6px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
label { display: block; font-weight: 600; font-size: 14px; margin: 18px 0 6px; }
input[type=email], input.code, textarea {
  width: 100%; font: inherit; color: inherit; background: var(--soft); border: 1px solid var(--line);
  border-radius: 8px; padding: 11px 12px; outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }
input.code { font-size: 26px; letter-spacing: 12px; text-align: center; font-variant-numeric: tabular-nums; }
textarea { resize: vertical; }
.btn {
  display: inline-block; margin-top: 16px; font: inherit; font-weight: 600; cursor: pointer;
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px; padding: 11px 18px;
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); }
form .btn { width: 100%; }
.links { font-size: 13px; color: var(--muted); margin-top: 14px; }
.link { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); cursor: pointer; }
.alert { border-radius: 8px; padding: 10px 12px; margin-bottom: 16px; font-size: 14px;
  background: color-mix(in srgb, var(--err) 12%, transparent); color: var(--err); }
.alert.info { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--text); }

.drop {
  margin-top: 18px; display: flex; flex-direction: column; align-items: center; gap: 2px;
  border: 2px dashed var(--line); border-radius: 12px; padding: 30px 16px; text-align: center;
  cursor: pointer; font-weight: 400; transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--accent); background: var(--soft); }
.drop-title { font-weight: 600; font-size: 16px; }

.files { list-style: none; padding: 0; margin: 16px 0 4px; }
.files li { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; }
.files.compact li { padding: 7px 12px; display: flex; justify-content: space-between; gap: 12px; }
.row { display: flex; align-items: center; gap: 10px; }
.fname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; font-size: 14px; }
.fmeta { font-size: 12px; color: var(--muted); white-space: nowrap; }
.fstatus { font-size: 12px; margin-top: 4px; color: var(--muted); }
.fstatus.ok { color: var(--ok); }
.fstatus.err { color: var(--err); }
.bar { height: 6px; background: var(--soft); border-radius: 3px; overflow: hidden; margin-top: 8px; }
.bar > span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.done .bar > span { background: var(--ok); }
.x { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 18px; line-height: 1; padding: 2px 4px; }
.x:hover { color: var(--err); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }
.check {
  width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; margin-bottom: 12px;
  background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); font-size: 28px; font-weight: 700;
}
@media (max-width: 520px) { .card { padding: 22px 18px 24px; } body { padding: 16px; } }