:root {
  --bg: #fbfaf7;
  --text: #1c1b19;
  --muted: #6b6860;
  --line: #e4e1d9;
  --accent: #2f5d50;
  --accent-text: #ffffff;
  --error: #a33a2b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151514;
    --text: #ecebe7;
    --muted: #9c998f;
    --line: #2e2d2a;
    --accent: #7fb5a3;
    --accent-text: #10201b;
    --error: #e58a7b;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main {
  flex: 1;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  padding: 18vh 16px 48px;
}
main.doc { max-width: 640px; padding-top: 64px; }
h1 { font-size: 28px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 6px; }
h2 { font-size: 17px; font-weight: 600; margin: 32px 0 6px; }
p { margin: 0 0 14px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
form { margin-top: 28px; display: grid; gap: 12px; }
input[type=text], input[type=email] {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
label.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--muted); }
label.consent input { margin-top: 3px; }
button {
  padding: 12px 14px;
  font: inherit;
  font-weight: 600;
  color: var(--accent-text);
  background: var(--accent);
  border: 0;
  border-radius: 10px;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }
button.link { background: none; color: var(--muted); font-weight: 400; padding: 0; text-decoration: underline; }
.msg { font-size: 14px; min-height: 1.4em; }
.msg.error { color: var(--error); }
.code {
  font: 600 22px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.06em;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-align: center;
  margin: 10px 0 18px;
}
ul.invites { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 8px; }
ul.invites li { display: flex; justify-content: space-between; gap: 8px; align-items: center; font-size: 13px; word-break: break-all; }
footer { text-align: center; padding: 24px 16px; font-size: 13px; color: var(--muted); }
footer a, main a { color: inherit; }
[hidden] { display: none !important; }