:root {
  --bg: #0d1117;
  --card: #161b22;
  --text: #e6edf3;
  --muted: #9aa5b1;
  --accent: #e0a85a;
  --danger: #ff7b72;
  --line: #30363d;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px;
}
main { width: 100%; max-width: 560px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
h1 { font-size: 1.4rem; margin: 0 0 12px; }
h2 { font-size: 1rem; margin: 20px 0 8px; }
ul { margin: 0; padding-left: 20px; }
li { margin: 4px 0; }
label { display: block; margin: 12px 0 4px; color: var(--muted); }
input { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font-size: 1rem; }
button { margin-top: 12px; padding: 10px 16px; border-radius: 8px; border: 0; background: var(--accent); color: #1b1300; font-weight: 600; font-size: 1rem; cursor: pointer; }
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
button.link { background: none; border: 0; color: var(--accent); padding: 0; margin: 0; font-weight: 400; text-decoration: underline; }
button:disabled { opacity: 0.6; cursor: wait; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.providers { display: flex; gap: 8px; flex-wrap: wrap; }
.muted { color: var(--muted); font-size: 0.92rem; }
.client, .uri { overflow-wrap: anywhere; }
.error { color: var(--danger); }
.warning { border-left: 3px solid var(--danger); padding-left: 10px; }
.notice { border-left: 3px solid var(--accent); padding-left: 10px; }
details { margin-top: 16px; }
summary { cursor: pointer; color: var(--muted); }
footer { margin-top: 24px; color: var(--muted); font-size: 0.85rem; }
footer a { color: var(--muted); }