:root {
  color-scheme: light dark;
  --bg: #f6f6f4; --card: #fff; --ink: #1d1f21; --muted: #62676d; --line: #d9dbdd;
  --accent: #1f5fbf; --accent-ink: #fff;
  --good: #17693a; --good-bg: #dff3e6; --warn: #7a5200; --warn-bg: #fbf0d5; --bad: #a12626; --bad-bg: #fbe4e4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a; --card: #1e2125; --ink: #e8eaec; --muted: #a0a6ad; --line: #363a40;
    --accent: #6ea4f2; --accent-ink: #0c1420;
    --good: #7dd6a0; --good-bg: #183324; --warn: #e6c26d; --warn-bg: #352b13; --bad: #f19a9a; --bad-bg: #3b1d1d;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
h1 { font-size: 1.4rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
h3 { font-size: 1rem; margin: 0; }
p { margin: 12px 0 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.muted { color: var(--muted); font-size: .93rem; }
.status-row, .result-head { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-weight: 600; font-size: .9rem; margin-right: 6px; background: var(--line); }
.badge.ready { background: var(--good-bg); color: var(--good); }
.badge.starting, .badge.stopping, .badge.confirm_cpu { background: var(--warn-bg); color: var(--warn); }
.message { padding: 10px 12px; border-radius: 8px; font-size: .95rem; }
.message p { margin: 0 0 10px; }
.warn { background: var(--warn-bg); color: var(--warn); }
.bad { background: var(--bad-bg); color: var(--bad); }
button { font: inherit; min-height: 40px; padding: 6px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
button.link { border: 0; background: none; color: var(--muted); padding: 6px; text-decoration: underline; }
button:disabled { opacity: .55; cursor: default; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
label { display: block; font-weight: 600; margin-bottom: 4px; }
input[type=file], input[type=password] { display: block; width: 100%; font: inherit; color: inherit; }
input[type=password] { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
#preview { display: block; max-width: 100%; max-height: 280px; margin: 12px 0; border: 1px solid var(--line); border-radius: 8px; }
#extract { margin-top: 12px; }
#stages { list-style: none; margin: 16px 0 0; padding: 0; }
#stages li { padding: 2px 0 2px 26px; position: relative; color: var(--muted); }
#stages li::before { content: "○"; position: absolute; left: 4px; }
#stages li.done { color: var(--ink); }
#stages li.done::before { content: "✓"; color: var(--good); }
#stages li.current { color: var(--ink); font-weight: 600; }
#stages li.current::before { content: "●"; color: var(--accent); }
progress { width: 100%; margin-top: 10px; accent-color: var(--accent); }
details { margin-top: 12px; }
summary { cursor: pointer; color: var(--muted); font-size: .93rem; }
pre { margin: 8px 0 0; padding: 10px; overflow-x: auto; background: var(--bg); border-radius: 8px; font-size: .8rem; }
#result { margin-top: 16px; }
textarea { display: block; width: 100%; margin-top: 8px; padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: inherit; font: .9rem/1.45 ui-monospace, Menlo, Consolas, monospace; resize: vertical; }
body.login { display: flex; min-height: 100vh; align-items: center; justify-content: center; padding: 16px; }
body.login .card { width: 100%; max-width: 360px; margin: 0; }
body.login h1 { margin-bottom: 16px; }
body.login button { width: 100%; margin-top: 16px; }