:root { --bg: #f6f7f9; --card: #fff; --ink: #1b2430; --quiet: #586374; --line: #d5dbe3; --accent: #2563eb; --ok: #15803d; --warn: #9a5b00; color-scheme: light; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #161a20; --card: #1f242c; --ink: #e9edf2; --quiet: #a7b0bd; --line: #3b434f; --accent: #6aa3ff; --ok: #5bd48a; --warn: #f2b45a; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 440px; margin: 64px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; display: grid; gap: 14px; }
h1 { font-size: 22px; margin: 0; display: flex; align-items: center; gap: 10px; }
h1 img { width: 40px; height: 40px; image-rendering: pixelated; }
p { margin: 0; }
.quiet { color: var(--quiet); font-size: 14px; }
label { font-weight: 600; font-size: 14px; display: grid; gap: 6px; }
input { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); }
button { font: inherit; font-weight: 600; padding: 10px 14px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; min-height: 44px; }
button.secondary { background: none; color: var(--ink); border-color: var(--line); }
button:disabled { opacity: .6; cursor: progress; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ok { color: var(--ok); font-weight: 600; }
.warn { color: var(--warn); }
[hidden] { display: none !important; }