:root {
  --bg: #fff;
  --text: #111;
  --text-secondary: #444;
  --text-muted: #666;
  --border: #eee;
  --shadow: rgba(0,0,0,0.15);
  --link: #111;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --text: #ddd;
  --text-secondary: #aaa;
  --text-muted: #888;
  --border: #333;
  --shadow: rgba(0,0,0,0.4);
  --link: #ddd;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: monospace;
  font-size: 16px;
  line-height: 1.4;
  transition: background 0.3s, color 0.3s;
}

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

.wrapper {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.top-bar {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 998;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.top-btn {
  background: none;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  font-family: monospace;
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.3s, border-color 0.3s;
}
.top-btn:hover { color: var(--text); border-color: var(--text); text-decoration: none; }

table, th, td { border: none !important; }
td { padding: 1rem 0.8rem !important; vertical-align: top; }
td img {
  box-shadow: 0 1px 4px var(--shadow);
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.2s;
}
td img:hover { transform: scale(1.05); }
tr + tr td { border-top: 1px solid var(--border) !important; }
td strong a { font-size: 1.1em; display: inline-block; margin-bottom: 0.5em; text-decoration: none; color: var(--link); }
td strong a:hover { text-decoration: underline; }
td .author { font-size: 0.85em; color: var(--text-secondary); display: inline-block; margin-bottom: 0.4em; }
td sub { font-size: 0.75em; color: var(--text-muted); }

.overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0);
  z-index: 999;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  pointer-events: none;
  transition: background 0.3s ease;
}
.overlay.active {
  background: rgba(0,0,0,0.7);
  pointer-events: auto;
}
.overlay img {
  max-width: 90vw;
  max-height: 90vh;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  border-radius: 4px;
  transform: scale(0.8);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.overlay.active img {
  transform: scale(1);
  opacity: 1;
}