:root {
  --bg: #fafafa;
  --bg-card: #fff;
  --text: #222;
  --text-muted: #666;
  --border: #ddd;
  --accent: #6a4c93;
  --accent-dark: #4a3a5c;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.hub-header {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 100%);
  color: #fff;
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.hub-header h1 {
  margin: 0;
  font-size: 2rem;
}

.hub-subtitle {
  margin: 0.5rem 0 0;
  font-size: 0.95rem;
  opacity: 0.85;
}

.hub-main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1.2rem;
}

section { margin: 2rem 0; }

h2 {
  margin: 1.2rem 0 1rem 0;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--accent);
  font-size: 1.3rem;
}

.group-title {
  margin: 1.4rem 0 0.6rem 0;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.event-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.event-card {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.12s, box-shadow 0.12s;
}

.event-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.event-card.status-past {
  border-left-color: var(--text-muted);
  opacity: 0.92;
}

.event-card.status-upcoming {
  border-left-color: #d32f2f;
}

.event-card.no-guide {
  cursor: default;
  background: #f9f7f2;
}
.event-card.no-guide:hover {
  transform: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.event-no-guide-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 0.3rem;
}

.event-icon {
  font-size: 2.4rem;
  flex: 0 0 auto;
  line-height: 1;
}

.event-body { flex: 1; min-width: 0; }

.event-name {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
  line-height: 1.3;
}

.event-fandom {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
  margin-top: 0.4rem;
  font-size: 0.83rem;
  color: var(--text-muted);
}

.event-summary {
  margin-top: 0.4rem;
  font-size: 0.88rem;
  color: var(--text);
}

.event-official {
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

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

.event-official a:hover { text-decoration: underline; }

.hub-circles-link {
  margin: 1.5rem 0;
}

.hub-circles-cta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.12s, box-shadow 0.12s;
}
.hub-circles-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.hub-circles-icon { font-size: 1.8rem; }
.hub-circles-cta > div { flex: 1; }
.hub-circles-cta strong {
  display: block;
  font-size: 1rem;
  color: var(--accent);
}
.hub-circles-sub {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}
.hub-circles-arrow {
  font-size: 1.4rem;
  color: var(--accent);
}

.hub-about p {
  margin: 0.7rem 0;
  font-size: 0.92rem;
}

.hub-about ul {
  padding-left: 1.4rem;
  font-size: 0.88rem;
}

.hub-about li { margin: 0.2rem 0; }

.hub-policy {
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  background: #f3edf7;
  border-radius: 8px;
  font-size: 0.85rem;
}

.hub-footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.hub-footer a { color: var(--accent); }

.loading, .empty, .error {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
}

.error { color: #d32f2f; }

@media (max-width: 600px) {
  .hub-header h1 { font-size: 1.5rem; }
  .event-card { padding: 0.8rem 1rem; }
  .event-icon { font-size: 2rem; }
  .event-name { font-size: 1rem; }
}

/* Simple Icons SVG brand mark — sized to match adjacent text via 1em,
   inherits color via currentColor so per-platform chip tints still apply.
   Without this rule, SVGs without explicit width/height attrs default to
   300x150 and blow up the chip. Shared across hub / circles / review. */
.platform-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  flex-shrink: 0;
}