:root {
  color-scheme: light dark;
  --bg: #f2f2f2;
  --panel: #ffffff;
  --ink: #222222;
  --muted: #6b6b6b;
  --line: #dcdcdc;
  --success: #438a60;
  --error: #b3261e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, sans-serif;
}

.container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
  text-align: center;
}

.logo {
  font-size: 36px;
  margin-bottom: 12px;
}

h1 {
  font-size: 28px;
  margin: 0 0 8px;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 24px;
}

.status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #999999;
}

.dot.ok {
  background: var(--success);
}

.dot.error {
  background: var(--error);
}

.hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  margin: 20px 0 0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1b1b;
    --panel: #242424;
    --ink: #eeeeee;
    --muted: #aaaaaa;
    --line: #3a3a3a;
  }
}