:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --accent: #0071e3;
  --error: #c9341f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #3a3a3c;
    --accent: #2997ff;
    --error: #ff6b57;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.card {
  width: 100%;
  max-width: 340px;
  padding: 28px 24px;
  background: var(--card);
  border-radius: 14px;
}

h1 {
  margin: 0 0 20px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

label {
  display: block;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
}

input {
  display: block;
  width: 100%;
  margin-top: 5px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 16px;
}

input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: transparent;
}

button {
  width: 100%;
  margin-top: 6px;
  padding: 11px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.error {
  margin: 0 0 14px;
  color: var(--error);
  font-size: 13px;
}

.ok {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 13px;
}

.note {
  margin: -8px 0 16px;
  color: var(--muted);
  font-size: 13px;
}

.aside {
  margin: 16px 0 0;
  text-align: center;
  font-size: 13px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.logo {
  display: block;
  width: 44px;
  height: 44px;
  margin: 0 0 14px;
}

textarea {
  display: block;
  width: 100%;
  margin-top: 5px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 16px;
  resize: vertical;
}

textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: transparent;
}

/* The test site shows its name in red. */
.test-site .site-name { color: var(--error); }