:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #5b6573;
  --line: #d9dee5;
  --accent: #1f5aa6;
  --accent-soft: #e3ecf8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --card: #1b2129;
    --text: #e6eaf0;
    --muted: #9aa4b2;
    --line: #2d3540;
    --accent: #7fb0f0;
    --accent-soft: #22324a;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header, main, footer { max-width: 980px; margin: 0 auto; padding: 0 16px; }
header h1 { font-size: 1.6rem; margin: 28px 0 4px; }
header p, footer p { color: var(--muted); margin: 0 0 20px; }
a { color: var(--accent); }

main { display: grid; grid-template-columns: 1fr; gap: 20px; }
section { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; min-width: 0; }

.tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.tabs button { flex: 1; background: transparent; color: var(--text); border: 1px solid var(--line); }
.tabs button[aria-selected="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

#pad {
  width: 100%; aspect-ratio: 3; display: block; touch-action: none; cursor: crosshair;
  border: 1px solid var(--line); border-radius: 8px; background: #fff;
}
#upload-preview { max-width: 100%; border: 1px solid var(--line); border-radius: 8px; margin-top: 10px; }
.file { display: block; padding: 18px; border: 1px dashed var(--line); border-radius: 8px; text-align: center; cursor: pointer; }
.file input { display: block; margin: 10px auto 0; }

.row { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin: 10px 0; }
.row label { color: var(--muted); font-size: 0.92rem; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 6px 0 0; }

button {
  font: inherit; font-weight: 600; padding: 9px 16px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--accent); color: #fff;
}
button.secondary { background: transparent; color: var(--accent); }
button:disabled { opacity: 0.5; cursor: wait; }
#recognise { width: 100%; margin-top: 4px; }
#status { color: var(--muted); font-size: 0.9rem; min-height: 1.5em; margin: 10px 0 0; }

.mayek, #word, #nbest .w { font-family: "Noto Sans Meetei Mayek", sans-serif; }
#word { font-size: 56px; line-height: 1.3; min-height: 1.3em; overflow-wrap: anywhere; }
#alone { color: var(--muted); margin: 4px 0 0; }
#alone .mayek { color: var(--text); font-size: 1.15rem; }

#nbest { list-style: none; padding: 0; margin: 12px 0; }
#nbest li { display: grid; grid-template-columns: minmax(0, 1fr) minmax(60px, 1fr) 64px; gap: 10px; align-items: center; padding: 6px 0; border-top: 1px solid var(--line); }
#nbest .w { font-size: 24px; overflow-wrap: anywhere; }
#nbest .bar { height: 8px; background: var(--accent-soft); border-radius: 4px; overflow: hidden; }
#nbest .bar span { display: block; height: 100%; background: var(--accent); }
#nbest .p { text-align: right; font-variant-numeric: tabular-nums; font-size: 0.9rem; }

figure { margin: 8px 0 0; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
#seen { max-width: 100%; height: 64px; border: 1px solid var(--line); border-radius: 6px; background: #fff; image-rendering: pixelated; }
figcaption { color: var(--muted); font-size: 0.85rem; }

footer { margin-top: 20px; }
footer p { font-size: 0.9rem; }