/* Q Series — GitHub Pages Shared Styles */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0A0A0A;
  --surface: #141414;
  --border: #222;
  --text: #E0E0E0;
  --text-muted: #999;
  --accent: #E57373;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Pretendard', 'Segoe UI', Roboto, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* Header */
.page-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}
.page-header .subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.page-header .updated {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Sections */
h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin: 36px 0 12px;
}
h2:first-of-type { margin-top: 0; }

p, li {
  color: var(--text);
  margin-bottom: 10px;
}

ul { padding-left: 20px; margin-bottom: 16px; }
li { margin-bottom: 6px; }

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

/* Footer */
.page-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}
.page-footer a { color: var(--text-muted); }
.page-footer a:hover { color: var(--accent); }

/* Landing page grid */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s;
}
.app-card:hover { border-color: var(--accent); }
.app-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.app-card .desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.app-card .links {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
}
.app-card .links a {
  color: var(--text-muted);
  transition: color 0.2s;
}
.app-card .links a:hover { color: var(--accent); }

/* Badge */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  color: #fff;
  margin-left: 8px;
  vertical-align: middle;
}

/* Back link */
.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.back-link:hover { color: var(--accent); }

@media (max-width: 600px) {
  .container { padding: 24px 16px 60px; }
  .page-header h1 { font-size: 1.4rem; }
  .app-grid { grid-template-columns: 1fr; }
}