:root {
  --bg: #101418;
  --panel: #1a2027;
  --ink: #e8edf2;
  --ink-2: #9aa7b4;
  --accent: #3b82c4;
  --warn: #d9822b;
  --ok: #3f9d63;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink);
  font-family: -apple-system, "Hiragino Sans", "Yu Gothic UI", sans-serif; }
body { display: flex; flex-direction: column; min-height: 100vh; }

header { display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; background: var(--panel); position: sticky; top: 0; z-index: 5; }
header h1 { font-size: 18px; letter-spacing: 0.5px; }
#step-indicator { font-size: 12px; color: var(--ink-2); }

main { flex: 1; padding: 12px; max-width: 760px; margin: 0 auto; width: 100%; }
.hidden { display: none !important; }
.step { margin-bottom: 10px; }
.guide { font-size: 14px; line-height: 1.6; margin-bottom: 10px; color: var(--ink); }
.guide small { color: var(--ink-2); }
.tips { margin: 12px 0 0 18px; font-size: 12px; color: var(--ink-2); line-height: 1.9; }

.big-btn { display: block; text-align: center; padding: 22px; border-radius: 12px;
  background: var(--accent); color: #fff; font-size: 17px; cursor: pointer; }

.btn-row { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
button { padding: 10px 14px; border-radius: 8px; border: 1px solid #33404d;
  background: var(--panel); color: var(--ink); font-size: 14px; cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button:disabled { opacity: 0.4; }

#canvas-wrap { position: relative; margin-top: 8px; }
#main-canvas { width: 100%; border-radius: 8px; touch-action: none; display: block; }

#loupe { position: absolute; pointer-events: none; border: 2px solid var(--accent);
  border-radius: 50%; overflow: hidden; width: 120px; height: 120px; }

.dialog { position: fixed; left: 50%; top: 40%; transform: translate(-50%, -50%);
  background: var(--panel); border: 1px solid #33404d; border-radius: 12px;
  padding: 16px; z-index: 20; width: min(320px, 90vw); }
.dialog input { width: 100%; margin-top: 8px; padding: 10px; font-size: 18px;
  border-radius: 8px; border: 1px solid #33404d; background: var(--bg); color: var(--ink); }
#ocr-suggest { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
#ocr-suggest button { background: #24303c; font-size: 15px; }

.ocr-status { font-size: 11px; color: var(--ink-2); }
#ref-list { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.ref-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13px;
  background: var(--panel); border: 1px solid #33404d; border-radius: 16px; padding: 5px 10px; }
.ref-chip .del { color: var(--warn); cursor: pointer; font-weight: bold; }

#calib-canvas, #hist-canvas { width: 100%; background: var(--panel); border-radius: 8px; }
#calib-info { font-size: 13px; line-height: 1.7; margin-top: 8px; color: var(--ink-2); }
#calib-info .warn { color: var(--warn); }

#result-stats { background: var(--panel); border-radius: 8px; padding: 12px; margin-bottom: 10px; }
#result-stats table { width: 100%; border-collapse: collapse; font-size: 14px; }
#result-stats td { padding: 4px 6px; border-bottom: 1px solid #26303a; }
#result-stats td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
#result-stats .hero { font-size: 26px; font-weight: 700; margin-bottom: 6px; }
#result-stats .hero small { font-size: 13px; color: var(--ink-2); font-weight: 400; }

.disclaimer { font-size: 11px; color: var(--ink-2); margin-top: 12px; line-height: 1.6; }