:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #666666;
  --card-bg: #ffffff;
  --border: #dddddd;
  --ok: #1b8a1b;
  --bad: #c62828;
  --code-bg: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #eaeef3;
    --muted: #9aa0a6;
    --card-bg: #161a22;
    --border: #2a2f3a;
    --ok: #5bd65b;
    --bad: #ff7676;
    --code-bg: #1e2430;
  }
}

[data-theme="light"] {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #666666;
  --card-bg: #ffffff;
  --border: #dddddd;
  --ok: #1b8a1b;
  --bad: #c62828;
  --code-bg: #f6f8fa;
}

[data-theme="dark"] {
  --bg: #0f1115;
  --fg: #eaeef3;
  --muted: #9aa0a6;
  --card-bg: #161a22;
  --border: #2a2f3a;
  --ok: #5bd65b;
  --bad: #ff7676;
  --code-bg: #1e2430;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  margin: 2rem;
  background: var(--bg);
  color: var(--fg);
}

.card {
  display: inline-block;
  width: auto;
  max-width: calc(100vw - 4rem);
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-bg);
  position: relative;
}

.row { display: flex; gap: .5rem; }
input { width: 20ch; min-width: 14ch; padding: .5rem .75rem; font-size: 1rem; background: var(--card-bg); color: var(--fg); border: 1px solid var(--border); border-radius: 6px; }
button { padding: .6rem .9rem; font-size: 1rem; cursor: pointer; color: var(--fg); background: var(--bg); border: 1px solid var(--border); border-radius: 6px; }
#submit { padding: .45rem .6rem; }
.muted { color: var(--muted); }
.ok { color: var(--ok); }
.bad { color: var(--bad); }
code { background: var(--code-bg); padding: .15rem .35rem; border-radius: 6px; }
.toolbar { display: flex; gap: .5rem; align-items: center; margin-bottom: .75rem; }
select { padding: .4rem .5rem; background: var(--card-bg); color: var(--fg); border: 1px solid var(--border); border-radius: 6px; }
.stats { margin-top: .75rem; font-size: .95rem; }
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; }
.dialog { background: var(--card-bg); color: var(--fg); padding: 1.25rem; border-radius: 10px; width: 90%; max-width: 420px; box-shadow: 0 10px 30px rgba(0,0,0,.2); border: 1px solid var(--border); }
.dialog h3 { margin-top: 0; }
.row-gap { margin-top: .5rem; }
.flex1 { flex: 1; min-width: 0; }
.link-right { margin-left: auto; }

.protip {
  position: absolute;
  top: .5rem;
  right: .75rem;
  font-size: .7rem;
  font-style: italic;
  color: var(--muted);
  max-width: 16rem;
  text-align: right;
  line-height: 1.2;
  z-index: 1;
}

.icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}