:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --primary: #3b82f6;
  --card: #f5f7fb;
  --border: #e5e7eb;
}
[data-theme="dark"] {
  --bg: #0b0f1a;
  --text: #e5e7eb;
  --muted: #9aa0aa;
  --primary: #60a5fa;
  --card: #101523;
  --border: #1f2937;
}
* { box-sizing: border-box }
html,body { height: 100% }
body { margin: 0; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial }
.header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border) }
.brand { font-weight: 600; letter-spacing: .5px }
.controls { display: flex; gap: 10px }
.btn { padding: 10px 14px; border: 1px solid var(--border); background: transparent; color: var(--text); border-radius: 8px; cursor: pointer }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary) }
.container { max-width: 960px; margin: 0 auto; padding: 20px }
.uploader { display: grid; gap: 12px }
.drop { padding: 20px; border: 2px dashed var(--border); border-radius: 12px; text-align: center; color: var(--muted) }
#fileInput { display: none }
#preview { width: 400px; height: auto; border-radius: 12px; display: none }
.preview-wrap { max-width: 100%; overflow: auto; border-radius: 12px; display: flex; justify-content: center }
.actions { display: flex; gap: 10px }
.notice { color: var(--muted); min-height: 20px }
.results { display: grid; gap: 16px; margin-top: 10px }
.about { margin-bottom: 12px }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px }
.card-title { font-size: 14px; color: var(--muted); margin-bottom: 8px }
.score { font-size: 52px; font-weight: 700 }
.value { font-size: 24px; font-weight: 600 }
.list { display: grid; gap: 6px }
.footer { padding: 16px 20px; border-top: 1px solid var(--border); margin-top: 24px; color: var(--muted); text-align: center }
@media (max-width: 768px) { .grid { grid-template-columns: 1fr } }