:root {
  --bg: #f7f6f3; --fg: #1d1d1f; --muted: #6b6b70; --card: #fff; --line: #dcdad4;
  --accent: #2f6f4f; --accent-fg: #fff; --err: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #151515; --fg: #ececec; --muted: #9a9aa0; --card: #1f1f1f; --line: #333;
          --accent: #5fb38a; --accent-fg: #0d1a13; --err: #ff8a80; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
       font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 560px; margin: 0 auto; padding: 16px 16px calc(24px + env(safe-area-inset-bottom)); }
header h1 { margin: 8px 0 0; font-size: 1.4rem; }
.sub { margin: 0 0 20px; color: var(--muted); font-size: .9rem; }

.big-button { display: flex; align-items: center; justify-content: center; gap: .5rem;
  width: 100%; padding: 28px 16px; border-radius: 16px; background: var(--accent); color: var(--accent-fg);
  font-size: 1.25rem; font-weight: 600; cursor: pointer; user-select: none; }
.link-button { display: block; text-align: center; margin-top: 12px; color: var(--muted);
  text-decoration: underline; cursor: pointer; font-size: .95rem; }

form { display: grid; gap: 14px; }
#preview { width: 100%; max-height: 35vh; object-fit: contain; border-radius: 12px; background: var(--card); }
label { display: grid; gap: 6px; font-weight: 600; font-size: .95rem; }
input, select, textarea { font: inherit; font-weight: 400; color: var(--fg); background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; width: 100%; min-width: 0; }
textarea { resize: vertical; }
.row { display: flex; gap: 8px; }
[aria-invalid="true"] { border-color: var(--err); }

details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; }
summary { cursor: pointer; color: var(--muted); }
pre { font-size: .75rem; overflow: auto; max-height: 40vh; margin: 8px 0 0; white-space: pre-wrap; word-break: break-word; }

.actions { display: flex; gap: 10px; }
button { font: inherit; font-weight: 600; border: 0; border-radius: 10px; padding: 12px 18px;
  background: var(--accent); color: var(--accent-fg); cursor: pointer; flex: 1; }
button.secondary { background: transparent; color: var(--fg); border: 1px solid var(--line); flex: 0 0 auto; }
button:disabled { opacity: .55; cursor: progress; }

#status { color: var(--muted); min-height: 1.4em; margin: 0; }
.category-view { margin: 24px 0 0; padding-top: 16px; border-top: 1px solid var(--line); }
.category-view h2 { margin: 0 0 12px; font-size: 1.1rem; }
.category-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.category-item { display: flex; justify-content: space-between; gap: 12px; align-items: center; border: 1px solid var(--line); border-radius: 10px; background: var(--card); padding: 10px 12px; }
.category-item button { flex: 1; background: transparent; color: var(--fg); padding: 0; text-align: left; border: 0; }
.category-meta { color: var(--muted); font-size: .8rem; }
.error { color: var(--err); white-space: pre-wrap; }
#done { text-align: center; }
.ok { font-size: 1.4rem; font-weight: 700; color: var(--accent); }
#done a { color: var(--accent); }