:root {
  --text: #1f2328;
  --muted: #5f6670;
  --line: #d8dde3;
  --surface: #ffffff;
  --background: #f3f5f7;
  --accent: #1a73e8;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--background);
}

body {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
}

.brand {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 8px 0 4px;
  font-size: 1.5rem;
}

h2 {
  margin: 24px 0 8px;
  font-size: 1.1rem;
  color: var(--muted);
}

h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

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

.subscribe {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.button {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.help,
details {
  margin-top: 8px;
}

summary {
  cursor: pointer;
  color: var(--accent);
}

.events {
  margin: 0;
  padding: 0;
  list-style: none;
}

.events li {
  margin-bottom: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.when,
.repeat,
.place {
  margin: 2px 0;
}

.repeat,
.place {
  color: var(--muted);
}

.description {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.add {
  display: inline-block;
  margin-top: 8px;
}

.empty,
footer {
  color: var(--muted);
}

footer {
  margin-top: 32px;
  font-size: 0.9rem;
}