:root {
  --bg: #ffffff; --fg: #1f2328; --muted: #59636e; --card: #f6f8fa;
  --border: #d1d9e0; --accent: #1f883d; --accent-fg: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --fg: #f0f6fc; --muted: #9198a1; --card: #151b23;
    --border: #3d444d; --accent: #2ea043; --accent-fg: #ffffff;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header, main, footer { max-width: 1100px; margin: 0 auto; padding: 24px 16px; }
h1 { margin: 0 0 8px; font-size: 2rem; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: .9rem; }

input { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--card); color: var(--fg); font: inherit; }
#search { max-width: 480px; margin-top: 12px; }

#grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px;
  display: flex; flex-direction: column; gap: 8px; }
.card h2 { margin: 0; font-size: 1.1rem; }
.card p { margin: 0; }
.card img, #d-img { width: 100%; height: auto; display: block; }
.card .by { color: var(--muted); font-size: .85rem; }
.card button { margin-top: auto; }

button { padding: 8px 14px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--accent); color: var(--accent-fg); font: inherit; cursor: pointer; }
button:hover { filter: brightness(1.1); }
button.copy { background: var(--card); color: var(--fg); margin-top: 6px; }

dialog { width: min(760px, 94vw); max-height: 92vh; padding: 0; border: 1px solid var(--border);
  border-radius: 12px; background: var(--bg); color: var(--fg); }
dialog::backdrop { background: rgba(0, 0, 0, .6); }
.inner { padding: 20px; position: relative; }
.close { position: absolute; top: 12px; right: 12px; background: var(--card); color: var(--fg);
  width: 36px; height: 36px; padding: 0; font-size: 1.4rem; }
.steps { padding-left: 20px; }
.steps h3 { margin: 12px 0 4px; font-size: 1rem; }
pre { margin: 8px 0 0; padding: 12px; background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; overflow-x: auto; font-size: .82rem; }
label { display: block; margin: 8px 0; font-size: .9rem; }
footer { color: var(--muted); font-size: .85rem; }