:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #d9dee5;
  --accent: #3b5bdb;
  --text: #1a1d21;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --card: #1f2229;
    --border: #333a44;
    --accent: #748ffc;
    --text: #e8eaed;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 2rem 1rem 4rem;
}
header { max-width: 900px; margin: 0 auto 2rem; }
h1 { margin: 0 0 .25rem; }
header p { margin: .25rem 0; color: var(--text); opacity: .8; }
a { color: var(--accent); }

.status {
  margin-top: .75rem;
  padding: .5rem .75rem;
  border-radius: 6px;
  background: #fff3bf;
  color: #664d03;
}

main {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}
.card h2 { margin-top: 0; }
label { display: block; margin: .75rem 0; font-weight: 600; }
input[type="text"], input[type="file"] {
  display: block;
  width: 100%;
  margin-top: .35rem;
  padding: .5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-weight: 400;
}
button {
  margin-top: .5rem;
  padding: .55rem 1.1rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: .55; cursor: progress; }

.result { margin-top: 1rem; }
.result img { max-width: 100%; border-radius: 8px; border: 1px solid var(--border); }
.result a {
  display: inline-block;
  margin-top: .6rem;
  padding: .45rem .9rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  text-decoration: none;
}
pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .6rem .8rem;
  font-size: 1.1rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.meta { opacity: .7; font-size: .85rem; }
.error { color: #e03131; }