:root {
  --bg: #fafaf9;
  --fg: #1c1917;
  --muted: #78716c;
  --line: #e7e5e4;
  --card: #ffffff;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --ok: #15803d;
  --err: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131211;
    --fg: #f5f5f4;
    --muted: #a8a29e;
    --line: #2b2826;
    --card: #1c1917;
    --accent: #3b82f6;
    --accent-fg: #ffffff;
    --ok: #4ade80;
    --err: #f87171;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

h1 { margin: 0; font-size: 1.75rem; letter-spacing: -0.01em; }
.sub { margin: 4px 0 24px; color: var(--muted); }

.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 36px 16px;
  border: 2px dashed var(--line);
  border-radius: 12px;
  background: var(--card);
  color: var(--muted);
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.drop strong { color: var(--fg); font-size: 1.05rem; }
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--accent); outline: none; }

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}
.quality { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .9rem; }
.quality input { width: 140px; accent-color: var(--accent); }
.quality output { min-width: 2.2ch; color: var(--fg); font-variant-numeric: tabular-nums; }

.buttons { display: flex; gap: 8px; }
button {
  font: inherit;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--fg);
  cursor: pointer;
}
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.summary { min-height: 1.5em; margin: 20px 0 8px; color: var(--muted); font-size: .9rem; }
.note { margin: 0 0 8px; color: var(--err); font-size: .9rem; }

.list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--line);
  font-size: .95rem;
}
.name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.meta { flex: none; display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .85rem; }
.meta a { color: var(--accent); text-decoration: none; }
.meta a:hover { text-decoration: underline; }
.st-done { color: var(--ok); }
.st-error { color: var(--err); }