/* 안심 샘플 시트 전용 스타일 — 현행 src/pages/tools/safe-sheet.astro 의 <style is:global> 이식본(M2-A).
 * Tailwind 유틸이 아니라 이 도구만 쓰는 순수 CSS 라 입력(static/src/tailwind.css)에 합치지 않는다.
 */
  .safe-sheet {
    --bg: #f2f5fa;
    --surface: #ffffff;
    --border: #dde4ef;
    --text: #1b2536;
    --text-sub: #56637a;
    --text-faint: #8894a8;
    --accent: #3466c2;
    --accent-soft: #e8eefb;
    --ok: #0d8a72;
    --ok-soft: #e2f3ef;
    --warn-bg: #fef3cd;
    --warn-border: #f0d783;
    --warn-text: #7a5d00;
    --danger: #dc2626;
    --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .07);
  }
  html.dark .safe-sheet {
      --bg: #131820;
      --surface: #1c2430;
      --border: #2c3746;
      --text: #e7ecf4;
      --text-sub: #a2aec1;
      --text-faint: #6e7b90;
      --accent: #6b96e8;
      --accent-soft: #1f2c45;
      --ok: #2fae93;
      --ok-soft: #1e3a32;
      --warn-bg: #3a3113;
      --warn-border: #6b5a1e;
      --warn-text: #e8c96a;
      --danger: #f87171;
      --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
  }
  .safe-sheet, .safe-sheet * { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent;
  }
  .safe-sheet {
    font-family: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Segoe UI', 'Malgun Gothic', sans-serif;
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
  }
  .safe-sheet .wrap { max-width: 720px; margin: 0 auto; padding: 28px 18px 48px;
  }
  .safe-sheet header.app { display: flex; align-items: center; gap: 12px; margin-bottom: 6px;
  }
  .safe-sheet header.app .logo {
    width: 44px; height: 44px; border-radius: 12px;
    background: var(--accent); color: #fff;
    display: grid; place-items: center; font-size: 24px; flex-shrink: 0;
  }
  .safe-sheet header.app h1 { font-size: 22px; font-weight: 800; letter-spacing: -.02em;
  }
  .safe-sheet header.app .home { margin-left: auto; font-size: 13px; color: var(--text-faint); text-decoration: none;
  }
  .safe-sheet .tagline { color: var(--text-sub); font-size: 14.5px; margin-bottom: 16px;
  }
  .safe-sheet .tagline b { color: var(--accent);
  }
  .safe-sheet .card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; box-shadow: var(--shadow); padding: 20px;
    margin-bottom: 14px;
  }
  .safe-sheet .section-title {
    display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap;
    font-size: 17px; font-weight: 800; letter-spacing: -.01em; margin-bottom: 10px;
  }
  .safe-sheet .section-title .sub { margin-left: auto; font-size: 13px; font-weight: 600; color: var(--text-faint);
  }
  .safe-sheet /* 드롭존 */
  .drop {
    display: block;   /* label 은 기본이 inline — 지정하지 않으면 점선 테두리가 줄마다 조각난다 */
    border: 2px dashed var(--border); border-radius: 14px; padding: 26px 16px;
    text-align: center; color: var(--text-sub); font-size: 15px; cursor: pointer;
    transition: border-color .15s, background .15s;
  }
  .safe-sheet .drop.over { border-color: var(--accent); background: var(--accent-soft);
  }
  .safe-sheet .drop .big { font-size: 30px; display: block; margin-bottom: 6px;
  }
  .safe-sheet .drop input { display: none;
  }
  .safe-sheet .drop-actions { display: flex; gap: 8px; margin-top: 10px; justify-content: center; flex-wrap: wrap;
  }
  .safe-sheet .chip {
    border: 2px solid var(--border); background: var(--surface); color: var(--text-sub);
    border-radius: 999px; padding: 8px 14px; font-size: 13.5px; font-weight: 700;
    cursor: pointer; font-family: inherit;
  }
  .safe-sheet .chip:hover { border-color: var(--accent); color: var(--accent);
  }
  .safe-sheet .filebar { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-sub); flex-wrap: wrap;
  }
  .safe-sheet .filebar b { color: var(--text);
  }
  .safe-sheet .filebar .reset { margin-left: auto; background: none; border: 0; color: var(--text-faint); cursor: pointer; font-size: 13px; font-family: inherit;
  }
  .safe-sheet /* 경고 */
  .warn-box {
    background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-text);
    border-radius: 12px; padding: 12px 14px; font-size: 14px; margin-bottom: 14px;
  }
  .safe-sheet /* 컬럼 표 */
  .tbl-scroll { overflow-x: auto;
  }
  .safe-sheet table.cols { border-collapse: collapse; width: 100%; font-size: 13.5px;
  }
  .safe-sheet table.cols th {
    text-align: left; font-size: 12px; color: var(--text-faint); font-weight: 700;
    padding: 6px 8px; border-bottom: 1px solid var(--border); white-space: nowrap;
  }
  .safe-sheet table.cols td { padding: 7px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; vertical-align: middle;
  }
  .safe-sheet table.cols td.colname { font-weight: 800;
  }
  .safe-sheet table.cols .type { font-size: 12px; color: var(--text-faint);
  }
  .safe-sheet table.cols select {
    font-family: inherit; font-size: 13px; padding: 6px 8px; border-radius: 8px;
    border: 2px solid var(--border); background: var(--bg); color: var(--text); max-width: 170px;
  }
  .safe-sheet .badge {
    display: inline-block; border-radius: 999px; padding: 1px 9px; font-size: 12px; font-weight: 700;
  }
  .safe-sheet .badge.calc { background: var(--ok-soft); color: var(--ok);
  }
  .safe-sheet .badge.sens { background: var(--warn-bg); color: var(--warn-text); border: 1px solid var(--warn-border);
  }
  .safe-sheet /* 옵션 */
  .seg { display: inline-flex; gap: 6px; flex-wrap: wrap;
  }
  .safe-sheet .seg button {
    padding: 9px 14px; border-radius: 999px; font-size: 14px; font-weight: 700;
    font-family: inherit; cursor: pointer;
    border: 2px solid var(--border); background: var(--bg); color: var(--text-sub);
  }
  .safe-sheet .seg button.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent);
  }
  .safe-sheet .opt-row { display: flex; align-items: flex-start; gap: 10px; margin-top: 12px; font-size: 14px;
  }
  .safe-sheet .opt-row input { width: 19px; height: 19px; margin-top: 4px; accent-color: var(--accent);
  }
  .safe-sheet .opt-row .desc { font-size: 12.5px; color: var(--text-faint);
  }
  .safe-sheet .go {
    display: block; width: 100%; margin-top: 16px; padding: 14px; border-radius: 12px;
    border: 0; background: var(--accent); color: #fff;
    font-size: 16px; font-weight: 800; font-family: inherit; cursor: pointer;
  }
  .safe-sheet .go:disabled { opacity: .5; cursor: default;
  }
  .safe-sheet /* 결과 */
  .result-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px;
  }
  .safe-sheet .result-actions .act {
    flex: 1; min-width: 150px; padding: 12px 10px; border-radius: 12px; text-align: center;
    font-size: 14.5px; font-weight: 800; font-family: inherit; cursor: pointer; text-decoration: none;
    border: 2px solid var(--accent); background: var(--accent); color: #fff;
  }
  .safe-sheet .result-actions .act.ghost { background: var(--surface); color: var(--accent);
  }
  .safe-sheet table.prev { border-collapse: collapse; font-size: 12.5px; width: 100%;
  }
  .safe-sheet table.prev th {
    background: var(--bg); text-align: left; padding: 5px 8px; font-size: 11.5px;
    color: var(--text-faint); border-bottom: 1px solid var(--border); white-space: nowrap; position: sticky; top: 0;
  }
  .safe-sheet table.prev td { padding: 5px 8px; border-bottom: 1px solid var(--border); white-space: nowrap;
  }
  .safe-sheet .prev-toggle { font-size: 13px; color: var(--text-faint);
  }
  .safe-sheet .prev-toggle button {
    background: none; border: 0; color: var(--accent); font-weight: 700; cursor: pointer;
    font-family: inherit; font-size: 13px; padding: 0 2px;
  }
  .safe-sheet .report { font-size: 13.5px; color: var(--text-sub);
  }
  .safe-sheet .report table { border-collapse: collapse; width: 100%; margin-top: 6px; font-size: 12.5px;
  }
  .safe-sheet .report th { text-align: left; padding: 4px 8px; font-size: 11.5px; color: var(--text-faint); border-bottom: 1px solid var(--border); white-space: nowrap;
  }
  .safe-sheet .report td { padding: 5px 8px; border-bottom: 1px solid var(--border); vertical-align: top;
  }
  .safe-sheet .report td:first-child { font-weight: 700; color: var(--text); white-space: nowrap;
  }
  .safe-sheet .note {
    margin-top: 4px; padding: 14px 16px; border-radius: 12px;
    background: var(--accent-soft); color: var(--text-sub); font-size: 13.5px;
  }
  .safe-sheet .py code {
    background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
    padding: 1px 6px; font-size: 12.5px;
  }
  .safe-sheet .py a.dl-link { color: var(--accent); font-weight: 700;
  }
  .safe-sheet .series-edu {
    margin-top: 24px; padding: 18px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; box-shadow: var(--shadow);
    display: flex; flex-direction: column; gap: 8px;
  }
  .safe-sheet .series-edu-title { font-size: 16px; font-weight: 800; letter-spacing: -.01em;
  }
  .safe-sheet .series-edu-desc { font-size: 14px; color: var(--text-sub);
  }
  .safe-sheet .series-edu-desc a { color: var(--accent); font-weight: 700;
  }
  .safe-sheet .series-edu-cta { font-size: 14px; font-weight: 800; color: var(--accent); text-decoration: none;
  }
  .safe-sheet footer.app { margin-top: 28px; text-align: center; font-size: 12.5px; color: var(--text-faint);
  }
  .safe-sheet footer.app a { color: inherit;
  }