/* kakuritsu.css — 確率の計算機。すべて .kk 配下にスコープ（サイトのCSSと干渉しない）。
   デザインは gcdlcm/shisha/warizan など計算機ファミリーと同じ「方眼ノートに青インク・答えは赤」。
   配色はライト1本（記事にダークモードは入れない）。 */
.kk {
  --kk-paper: #ffffff;
  --kk-ground: #f3f6fc;
  --kk-ink: #1a2657;
  --kk-sub: #55618a;
  --kk-line: #d3daee;
  --kk-grid: rgba(70, 100, 190, .10);
  --kk-accent: #2f52c4;
  --kk-accent-ink: #ffffff;
  --kk-red: #d23c50;
  --kk-orange: #c4660f;
  --kk-orange-bg: #fff1df;
  --kk-blue-bg: #e6edff;
  --kk-warn-bg: #fff3ef;
  --kk-warn: #a63a26;
  --kk-key: #eef2fb;
  --kk-font: "Hiragino Maru Gothic ProN", "BIZ UDPGothic", "Yu Gothic UI", Meiryo, sans-serif;
  --kk-math: "Hiragino Mincho ProN", "BIZ UDPMincho", "Yu Mincho", "Noto Serif JP", "Times New Roman", serif;
  box-sizing: border-box;
  max-width: 680px;
  margin: 0 auto;
  color: var(--kk-ink);
  font-family: var(--kk-font);
  font-size: 16px;
  line-height: 1.7;
  text-align: left;
}
.kk *, .kk *::before, .kk *::after { box-sizing: border-box; }
:where(.kk button) { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
.kk :focus-visible { outline: 3px solid var(--kk-accent); outline-offset: 2px; }
.kk [hidden] { display: none !important; }

.kk-card { background: var(--kk-paper); border: 1px solid var(--kk-line); border-radius: 14px; padding: 16px; margin-bottom: 14px; }
.kk-grid {
  background-image:
    linear-gradient(var(--kk-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--kk-grid) 1px, transparent 1px);
  background-size: 22px 22px;
  background-color: var(--kk-paper);
}
.kk-h { margin: 0 0 10px; font-size: 15px; font-weight: 700; color: var(--kk-sub); letter-spacing: .04em; }
.kk-h-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.kk-h-row .kk-h { margin: 0; }

/* ---- 入力 ---- */
.kk-fields { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; }
.kk-input {
  flex: 1 1 120px; min-width: 0; height: 52px; padding: 0 14px; border: 2px solid var(--kk-line); border-radius: 10px;
  background: var(--kk-paper); color: var(--kk-ink); font-family: var(--kk-math); font-size: 24px; letter-spacing: .04em;
}
.kk-input-err { border-color: var(--kk-red); }
.kk-quickkeys { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.kk-key { min-width: 40px; height: 36px; padding: 0 12px; border-radius: 8px; background: var(--kk-key); font-size: 14px; color: var(--kk-sub); }
.kk-key:hover:not(:disabled) { background: var(--kk-line); }
.kk-key:disabled { opacity: .45; cursor: default; }

.kk-examples { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.kk-chip { padding: 6px 12px; border-radius: 999px; background: var(--kk-key); color: var(--kk-sub); font-size: 13px; border: 1px solid var(--kk-line); }
.kk-chip:hover { background: var(--kk-line); }

.kk-error { background: var(--kk-warn-bg); color: var(--kk-warn); border-radius: 10px; padding: 10px 14px; font-size: 14px; margin-bottom: 12px; }
.kk-solve {
  display: block; width: 100%; min-height: 52px; padding: 8px 12px; border-radius: 14px; background: var(--kk-accent);
  color: var(--kk-accent-ink); font-size: 19px; font-weight: 700; letter-spacing: .04em;
}
.kk-solve:active { transform: translateY(1px); }

/* ---- 答え ---- */
.kk-ans-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px dashed var(--kk-line); }
.kk-ans-row:last-of-type { border-bottom: none; }
.kk-ans-label { font-size: 15px; font-weight: 700; color: var(--kk-sub); flex: none; }
.kk-ans-val { font-family: var(--kk-math); font-size: 30px; font-weight: 700; color: var(--kk-red); text-align: right; word-break: break-all; }
.kk-notes { margin: 10px 0 0; padding: 10px 14px 10px 30px; background: var(--kk-ground); border-radius: 10px; font-size: 14px; color: var(--kk-ink); }
.kk-notes li { margin: 2px 0; }

/* ---- とき方 ---- */
.kk-hint-toggle { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--kk-sub); }
.kk-seg { display: flex; gap: 0; margin: 4px 0 12px; border: 1px solid var(--kk-line); border-radius: 10px; overflow: hidden; }
.kk-seg button { flex: 1 1 0; padding: 8px 6px; font-size: 14px; font-weight: 700; color: var(--kk-sub); background: var(--kk-key); border-right: 1px solid var(--kk-line); }
.kk-seg button:last-child { border-right: none; }
.kk-seg button[aria-pressed="true"] { background: var(--kk-accent); color: var(--kk-accent-ink); }
.kk-unavail { background: var(--kk-ground); border-radius: 10px; padding: 12px 14px; font-size: 14px; color: var(--kk-sub); }
.kk-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.kk-step { border: 1px solid var(--kk-line); border-radius: 10px; overflow: hidden; }
.kk-step-head { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: var(--kk-ground); cursor: pointer; }
.kk-step-badge { flex: none; padding: 2px 10px; border-radius: 999px; background: var(--kk-accent); color: var(--kk-accent-ink); font-size: 12px; font-weight: 700; }
.kk-step-title { font-weight: 700; font-size: 14px; }
.kk-step-body { padding: 10px 14px 14px; }
.kk-step-note { font-size: 13px; color: var(--kk-sub); margin-bottom: 6px; }
.kk-step-line { font-family: var(--kk-math); font-size: 17px; margin-bottom: 4px; word-break: break-word; }

/* ---- 書き出し ---- */
.kk-lists { display: flex; flex-direction: column; gap: 8px; margin: 6px 0; }
.kk-list-label { font-size: 13px; font-weight: 700; color: var(--kk-sub); }
.kk-list-items { display: flex; flex-wrap: wrap; gap: 4px; }
.kk-li { padding: 1px 8px; border-radius: 6px; background: var(--kk-ground); font-family: var(--kk-math); font-size: 17px; }
.kk-li-hit { background: var(--kk-blue-bg); color: var(--kk-accent); font-weight: 700; }
.kk-step .kk-lists .kk-li-hit { outline: 1px solid currentColor; }

/* ---- 共有 ---- */
.kk-share-card { display: flex; align-items: center; gap: 10px; }
.kk-copylink { padding: 8px 14px; border-radius: 10px; background: var(--kk-key); color: var(--kk-sub); font-size: 13px; border: 1px solid var(--kk-line); }
.kk-copymsg { font-size: 13px; color: var(--kk-accent); }


/* ---- しらべる種類・入力フォーム ---- */
.kk-modes { margin: 0 0 14px; }
.kk-form { display: grid; grid-template-columns: 1fr; gap: 10px; margin-bottom: 12px; }
.kk-row { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.kk-lab { font-size: 13px; font-weight: 700; color: var(--kk-sub); }
.kk-sel, .kk-num {
  width: 100%; min-width: 0; height: 48px; padding: 0 12px; border: 2px solid var(--kk-line); border-radius: 10px;
  background: var(--kk-paper); color: var(--kk-ink); font-family: var(--kk-math); font-size: 20px;
}
.kk-sel { font-family: var(--kk-font); font-size: 16px; }
.kk-inline { display: flex; gap: 8px; align-items: center; }
.kk-inline .kk-unit { flex: none; font-size: 15px; color: var(--kk-sub); white-space: nowrap; }
.kk-two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kk-input-err { border-color: var(--kk-red); }
.kk-hintline { font-size: 12.5px; color: var(--kk-sub); margin: -4px 0 2px; }

/* ---- 答え ---- */
.kk-question { font-size: 14.5px; color: var(--kk-ink); margin: 0 0 8px; line-height: 1.6; }
.kk-ans-val small { font-size: 15px; font-weight: 700; margin-right: 2px; }

/* ---- サイコロ6×6の表 ---- */
.kk-dgrid-wrap { max-width: 100%; overflow-x: auto; margin: 6px 0; }
.kk-dgrid { border-collapse: collapse; font-family: var(--kk-math); font-size: 15px; text-align: center; }
.kk-dgrid th, .kk-dgrid td { border: 1px solid var(--kk-line); padding: 2px 0; min-width: 2.3em; }
.kk-dgrid th { background: var(--kk-ground); color: var(--kk-sub); font-weight: 700; }
.kk-dgrid td { color: var(--kk-sub); }
.kk-dgrid td.kk-hit { background: var(--kk-blue-bg); color: var(--kk-accent); font-weight: 700; outline: 1px solid var(--kk-accent); outline-offset: -1px; }
.kk-dgrid-cap { font-size: 12.5px; color: var(--kk-sub); margin-bottom: 4px; }

/* ---- 通り数・確率の表 ---- */
.kk-dist-wrap { max-width: 100%; overflow-x: auto; margin: 6px 0; }
.kk-dist-cap { font-size: 12.5px; color: var(--kk-sub); margin-bottom: 4px; }
.kk-dist { border-collapse: collapse; font-family: var(--kk-math); font-size: 16px; text-align: center; }
.kk-dist th, .kk-dist td { border: 1px solid var(--kk-line); padding: 3px 10px; min-width: 2.4em; white-space: nowrap; }
.kk-dist th { background: var(--kk-ground); color: var(--kk-sub); font-weight: 700; text-align: right; }
.kk-dist thead th { text-align: center; }
.kk-dist td.kk-hit, .kk-dist th.kk-hit { background: var(--kk-blue-bg); color: var(--kk-accent); font-weight: 700; }

@media (min-width: 560px) {
  .kk-form-3 { grid-template-columns: 1fr 1fr 1fr; }
  .kk-form-2 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px) {
  .kk-input { font-size: 20px; flex-basis: 100px; }
  .kk-ans-val { font-size: 24px; }
  .kk-solve { font-size: 17px; }
}