:root {
  --bg: #0b0f16;
  --panel: #12161f;
  --line: #1c2330;
  --text: #e6e8f3;
  --muted: #9aa1b2;
  --accent: #6aa2f7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, sans-serif;
  background: var(--bg);
  color: var(--text);
}
header, main, footer {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 20px;
}
header h1 { margin: 0 0 4px; font-size: 24px; }
.subtitle { margin: 0; color: var(--muted); }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-top: 16px;
}
.upload-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
.upload-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border-radius: 10px;
  border: 1px dashed var(--line);
  cursor: pointer;
  color: var(--muted);
}
.upload-box input[type="file"] { display: none; }
.upload-box.has-image { border-style: solid; border-color: var(--accent); color: var(--text); }
.upload-box img { max-width: 100%; max-height: 160px; border-radius: 8px; }
button, .button {
  background: var(--accent);
  color: #0b0f16;
  border: 0;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
}
#result { white-space: pre-wrap; color: var(--text); }