/* gallery.css — first-party styling for the kromgo index gallery and landing page.
   Adapts to light/dark to match github-markdown.css. */
:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --card-bg: #ffffff;
  --border: #d1d9e0;
  --code-bg: #f6f8fa;
  --accent: #0969da;
  --preview-bg: #f6f8fa;
  --ok: #1a7f37;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #9198a1;
    --card-bg: #151b23;
    --border: #3d444d;
    --code-bg: #161b22;
    --accent: #4493f8;
    --preview-bg: #010409;
    --ok: #3fb950;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

.wrap { max-width: 1100px; margin: 0 auto; padding: 2rem 1rem 4rem; }

.masthead { margin-bottom: 1rem; }
.masthead h1 { font-size: 1.75rem; margin: 0 0 0.25rem; }
.masthead p { margin: 0; color: var(--muted); }

section { margin-top: 2.5rem; }
section > h2 {
  font-size: 0.8rem;
  margin: 0 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* Responsive grid: 1 column on mobile, 2 on tablet, capped at 3 on desktop. */
.grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 640px)  { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid { grid-template-columns: repeat(3, 1fr); } }

.card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
  overflow: hidden;
}

.preview {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  min-height: 96px;
  background: var(--preview-bg);
  border-bottom: 1px solid var(--border);
}
.preview .markdown-body { background: transparent; width: 100%; display: flex; justify-content: center; }
.preview .markdown-body p { margin: 0; }
/* height:auto keeps wide graph SVGs proportional when scaled to the column width. */
.preview .markdown-body img { height: auto; }

.snippet { position: relative; }
.snippet pre {
  margin: 0;
  padding: 0.75rem 4.75rem 0.75rem 0.75rem;
  overflow-x: auto;
  background: var(--code-bg);
  font-size: 0.8rem;
  line-height: 1.45;
}
.snippet code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  color: var(--fg);
  white-space: pre;
}

.copy {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font: inherit;
  font-size: 0.75rem;
  line-height: 1;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  color: var(--fg);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.copy:hover { border-color: var(--accent); color: var(--accent); }
.copy.copied { color: var(--ok); border-color: var(--ok); }

.empty { color: var(--muted); font-style: italic; }

/* Landing page shown when the gallery is disabled. */
.landing {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}
.landing h1 { font-size: 2rem; margin: 0 0 0.5rem; }
.landing p { margin: 0; color: var(--muted); }
.landing a { color: var(--accent); }