:root {
  --bg: #ffffff;
  --fg: #1b1f24;
  --muted: #57606a;
  --line: #d0d7de;
  --accent: #0b5cad;
  --accent-fg: #ffffff;
  --ok: #1a7f37;
  --error: #b42318;
  --notice-bg: #f3f6f9;
  --focus: #0b5cad;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --fg: #e6eaee;
    --muted: #9aa5b1;
    --line: #2d3640;
    --accent: #5aa9ff;
    --accent-fg: #0b1220;
    --ok: #4cc38a;
    --error: #ff8a80;
    --notice-bg: #18202a;
    --focus: #5aa9ff;
  }
}

* { 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;
}

.top, main, footer { max-width: 44rem; margin: 0 auto; padding: 0 1rem; }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; padding-top: 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--line); }
.top h1 { margin: 0; font-size: 1.5rem; flex: 1 1 auto; }
.who { margin: 0; color: var(--muted); font-size: 0.9rem; overflow-wrap: anywhere; }

h2 { font-size: 1.15rem; margin: 1.75rem 0 0.5rem; }

.field { margin: 0.75rem 0; }
label { display: block; font-weight: 600; margin-bottom: 0.25rem; }
.hint { color: var(--muted); font-weight: 400; font-size: 0.9rem; }

input[type="text"] {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.5rem 0.75rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.375rem;
  font: inherit;
}

button {
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  color: var(--accent-fg);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 0.375rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button.secondary { color: var(--accent); background: transparent; }
button[disabled] { opacity: 0.6; cursor: progress; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.notice { margin: 1rem 0; padding: 0.75rem 1rem; border-left: 4px solid var(--accent); background: var(--notice-bg); border-radius: 0.25rem; }
.notice.error, .message.error { border-left-color: var(--error); }
.message.error .title { color: var(--error); }
.message.success .title { color: var(--ok); }

.result { margin-top: 1rem; }
.message { padding: 0.75rem 1rem; border-left: 4px solid var(--ok); background: var(--notice-bg); border-radius: 0.25rem; margin-bottom: 0.75rem; }
.message .title { font-weight: 600; margin: 0 0 0.25rem; }
.message ul { margin: 0.25rem 0 0; padding-left: 1.25rem; }

table { width: 100%; border-collapse: collapse; margin: 0.5rem 0 1rem; font-size: 0.95rem; }
caption { text-align: left; font-weight: 600; padding: 0.25rem 0; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }

footer { color: var(--muted); font-size: 0.9rem; padding-top: 2rem; padding-bottom: 2rem; }

[hidden] { display: none !important; }

@media (max-width: 34rem) {
  .actions button { flex: 1 1 100%; }
}