/* QR 코드 생성기 — calculator/pick 과 동일 팔레트(블루), 모바일 우선 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Malgun Gothic', sans-serif;
  background: #f5f5f5; color: #333; line-height: 1.55;
  padding-bottom: 130px; /* 하단 AdFit 고정 배너 여백 */
}

.site-header {
  background: linear-gradient(135deg, #2C3E50, #3498DB);
  color: #fff; padding: 22px 16px 26px; text-align: center;
}
.site-header h1 { font-size: 24px; margin-bottom: 6px; }
.site-header .subtitle { font-size: 14px; opacity: 0.9; }
.site-header nav { margin-top: 12px; font-size: 13px; }
.site-header nav a { color: #cfe7fa; text-decoration: none; margin: 0 8px; }
.site-header nav a:hover { text-decoration: underline; }

.container { max-width: 760px; margin: 0 auto; padding: 20px 14px; }

.section-title {
  font-size: 17px; font-weight: bold; color: #2C3E50;
  border-left: 4px solid #3498DB; padding-left: 12px; margin: 28px 0 12px;
}

.tool-panel {
  background: #fff; border-radius: 12px; padding: 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08); margin-top: -34px;
}
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; color: #555; margin-bottom: 4px; font-weight: bold; }
#qr-input {
  width: 100%; font-size: 16px; padding: 12px 14px;
  border: 2px solid #3498DB; border-radius: 10px; outline: none; direction: ltr;
}
#qr-input:focus { border-color: #2C3E50; }
.hint { font-size: 12px; color: #999; margin-top: 3px; }

.options { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-bottom: 12px; font-size: 13px; color: #555; }
.options label { display: inline-flex; align-items: center; gap: 6px; font-weight: bold; }
.options select {
  font-size: 13px; padding: 5px 6px; border: 1px solid #ccc; border-radius: 6px; background: #fff;
}
.options input[type="color"] {
  width: 34px; height: 26px; border: 1px solid #ccc; border-radius: 6px; padding: 1px; background: #fff; cursor: pointer;
}

.btn {
  border: 1px solid #3498DB; background: #fff; color: #2980B9;
  border-radius: 10px; padding: 10px 16px; font-size: 14px; cursor: pointer;
  touch-action: manipulation;
}
.btn.primary { background: #3498DB; color: #fff; font-weight: bold; }
.btn.primary:active { background: #2C81BA; }
.btn.big { width: 100%; padding: 13px 0; font-size: 17px; }

#qr-warn {
  background: #FDEBD0; color: #B9770E; border-radius: 8px;
  font-size: 13px; padding: 8px 12px; margin-top: 10px;
}

/* 결과 패널 + 광고 */
.result-panel {
  margin-top: 16px; background: #F8FAFB; border: 1px solid #e0e6ea;
  border-radius: 12px; padding: 16px; text-align: center;
}
.result-title { font-size: 17px; font-weight: bold; color: #2C3E50; margin-bottom: 10px; }
.fixed-note { font-size: 12px; color: #2980B9; margin-bottom: 8px; word-break: break-all; }
.qr-canvas-wrap { display: flex; justify-content: center; padding: 8px; }
#qr-canvas {
  max-width: 260px; width: 100%; height: auto; image-rendering: pixelated;
  border: 1px solid #eef2f4; border-radius: 8px; background: #fff;
}
.qr-caption, #qr-caption { font-size: 12px; color: #999; margin-top: 6px; }
.result-actions { display: flex; gap: 8px; margin-top: 12px; }
.result-actions .btn { flex: 1; white-space: nowrap; font-size: 13px; padding: 10px 6px; }
.ad-wrap { margin-top: 18px; display: flex; justify-content: center; }

/* 설명/FAQ */
.info-card {
  background: #fff; border-radius: 10px; padding: 16px 18px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06); margin-bottom: 12px; font-size: 14px;
}
.info-card h3 { font-size: 15px; color: #2C3E50; margin-bottom: 6px; }
.info-card p + p { margin-top: 8px; }
.info-card ul { padding-left: 20px; }
.info-card li { margin: 4px 0; }
.info-card code {
  background: #EBF5FB; color: #2980B9; border-radius: 4px; padding: 1px 5px;
  font-family: Consolas, 'Courier New', monospace; font-size: 13px;
}

.site-footer { text-align: center; font-size: 12px; color: #888; padding: 24px 16px 8px; }
.site-footer a { color: #2980B9; text-decoration: none; }

@media (min-width: 768px) {
  body { padding-bottom: 120px; }
  #qr-canvas { max-width: 300px; }
}