/* === Widget Styles === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --widget-bg: #ffffff;
  --widget-text: #292524;
  --widget-text-secondary: #78716c;
  --widget-text-muted: #a8a29e;
  --widget-border: #e5e3e0;
  --widget-ai: #e9b949;
  --widget-reviewed: #438ee4;
  --widget-link: #1d4ed8;
  --widget-surface: #fafaf9;
  --radius: 4px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "Noto Sans JP", sans-serif;
}

html[data-theme="dark"] {
  --widget-bg: #1c1917;
  --widget-text: #e7e5e4;
  --widget-text-secondary: #a8a29e;
  --widget-text-muted: #78716c;
  --widget-border: #44403c;
  --widget-surface: #292524;
  --widget-link: #60a5fa;
}

html {
  font-family: var(--font);
  font-size: 14px;
  background: transparent;
}

.widget-container {
  display: inline-block;
  background: var(--widget-bg);
  border: 1px solid var(--widget-border);
  border-radius: 8px;
  padding: 1rem;
  max-width: 100%;
  color: var(--widget-text);
}

.widget-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--widget-text);
}

.widget-subtitle {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--widget-text-secondary);
  margin-left: auto;
}

/* === Heatmap Grid === */
.heatmap {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  margin-bottom: 0.75rem;
}

.heatmap-square {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  flex-shrink: 0;
}

.heatmap-square:hover {
  transform: scale(1.3);
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.heatmap-square:focus {
  outline: 2px solid var(--widget-link);
  outline-offset: 2px;
  transform: scale(1.3);
}

.heatmap-square.ai { background: var(--widget-ai); }
.heatmap-square.reviewed { background: var(--widget-reviewed); }

/* === Tooltip === */
.heatmap-square {
  /* title attribute provides basic tooltip; enhanced via :focus/:hover */
}

.heatmap-square:hover::after,
.heatmap-square:focus::after {
  content: attr(aria-label);
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--widget-text);
  color: var(--widget-bg);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  white-space: nowrap;
  z-index: 10;
  pointer-events: none;
}

/* === Legend === */
.legend {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--widget-text-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.legend-swatch.ai { background: var(--widget-ai); }
.legend-swatch.reviewed { background: var(--widget-reviewed); }

/* === Footer Link === */
.widget-footer {
  margin-top: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--widget-border);
  font-size: 0.72rem;
}

.widget-footer a {
  color: var(--widget-link);
  text-decoration: none;
}

.widget-footer a:hover {
  text-decoration: underline;
}

/* === States === */
.widget-loading,
.widget-error,
.widget-empty {
  padding: 1rem;
  text-align: center;
  color: var(--widget-text-muted);
  font-size: 0.85rem;
}

.widget-error {
  color: #dc2626;
}

/* Spinner */
.widget-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--widget-border);
  border-top-color: var(--widget-link);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 0.4rem;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* === Responsive === */
@media (max-width: 400px) {
  .widget-container { padding: 0.75rem; }
  .heatmap-square { width: 12px; height: 12px; gap: 2px; }
  .legend { font-size: 0.7rem; gap: 0.75rem; }
}
html.embedded .widget-container { display:block; width:100%; padding:4px 0 10px; border:0; border-radius:0; background:transparent; }
html.embedded .widget-subtitle { margin-left:0; }
html.embedded .heatmap-square { width:16px; height:16px; }
html.embedded .heatmap { gap:5px; }
/* An iframe needs its own painted canvas in Safari/WebKit dark mode. */
html { background:var(--widget-bg); }
html[data-theme="dark"] { --widget-bg:#1d1e22; }

html.embedded, html.embedded body { margin:0; padding:0; overflow:hidden; }