:root {
  --bg: #f3f5f0; --card: #ffffff; --ink: #1c2916; --muted: #5b6955; --line: #dce3d6;
  --accent: #4c8733; --accent-ink: #ffffff; --good: #2e7d32; --bad: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10150e; --card: #192016; --ink: #e7eee3; --muted: #9dac96; --line: #2c3727;
    --accent: #6aa84f; --accent-ink: #0c1209; --good: #81c784; --bad: #ff8a80;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body {
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh; display: flex; justify-content: center; align-items: flex-start;
  padding: 48px 16px;
}
.card {
  width: 100%; max-width: 560px; background: var(--card);
  border: 1px solid var(--line); border-radius: 14px; padding: 28px;
}
.brand { margin: 0; font-weight: 700; letter-spacing: .02em; color: var(--accent); }
h1 { font-size: 1.5rem; line-height: 1.25; margin: .25rem 0 .5rem; }
.lead { color: var(--muted); margin: 0 0 1.5rem; }
label { display: block; font-weight: 600; margin-bottom: .35rem; }
input[type=text] {
  width: 100%; padding: .65rem .75rem; margin-bottom: 1.25rem;
  border: 1px solid var(--line); border-radius: 8px;
  background: transparent; color: inherit; font: inherit;
}
input[type=text]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.drop { border: 2px dashed var(--line); border-radius: 12px; padding: 28px 16px; text-align: center; }
.drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
button { font: inherit; border-radius: 8px; padding: .7rem 1.25rem; cursor: pointer; border: 1px solid transparent; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.primary { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.primary:disabled { opacity: .5; cursor: default; }
.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; }
.row .link { padding: .7rem .5rem; }
.hint { color: var(--muted); font-size: .9rem; margin: .85rem 0 0; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-top: 1rem; }
.summary { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
progress {
  width: 100%; height: 14px; appearance: none; -webkit-appearance: none;
  border: 0; border-radius: 7px; overflow: hidden; background: var(--line); color: var(--accent);
}
progress::-webkit-progress-bar { background: var(--line); }
progress::-webkit-progress-value { background: var(--accent); }
progress::-moz-progress-bar { background: var(--accent); }
.stats { font-variant-numeric: tabular-nums; margin: .75rem 0 0; }
.big { font-size: 1.1rem; font-weight: 600; margin: 0; }
.big.ok { color: var(--good); }
.big.bad { color: var(--bad); }
.fails { color: var(--muted); font-size: .85rem; padding-left: 1.1rem; margin: .75rem 0 0; max-height: 220px; overflow: auto; overflow-wrap: anywhere; }
.err { color: var(--bad); margin: 1rem 0 0; }