:root {
  color-scheme: light dark;
  --bg: #f4f4f6;
  --fg: #1c1c22;
  --muted: #6a6a74;
  --line: #d4d4da;
  --accent: #2f5bd3;
  --error: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #e4e4e8;
    --muted: #9a9aa4;
    --line: #34343c;
    --accent: #8aa8ff;
    --error: #ff8a80;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, sans-serif;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

header form { margin: 0; }

header .user { margin-left: auto; }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 16px;
}

main.narrow { max-width: 360px; padding-top: 12vh; }

h1 { font-size: 1.6rem; margin: 0 0 16px; }

label { display: block; margin-bottom: 12px; }

input, textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
}

button {
  padding: 8px 18px;
  font: inherit;
  color: var(--bg);
  background: var(--fg);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

header button {
  padding: 4px 12px;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line);
}

a { color: var(--accent); }

.game {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.game h2 { font-size: 1.2rem; margin: 0 0 4px; }

.game h2 a { color: inherit; text-decoration: none; }

.game p { margin: 0 0 8px; }

.meta { color: var(--muted); font-size: 0.875rem; }

.play {
  display: inline-block;
  padding: 6px 18px;
  color: var(--bg);
  background: var(--fg);
  border-radius: 6px;
  text-decoration: none;
}

.error { color: var(--error); }

.sent { color: var(--accent); }

.game .play { margin-right: 12px; }