/* #067: 学習カリキュラムの問題画面（全画面。新デザイン／以前のデザインどちらでも黒地＋黄色） */
#cur-overlay { position: fixed; inset: 0; z-index: 900; background: #0e100f; color: #f7f7ee; display: flex; font-family: "Noto Sans JP", sans-serif; }
#cur-overlay.hidden { display: none; }
.cur-frame { flex: 1; display: flex; flex-direction: column; min-width: 0; background: radial-gradient(circle at 70% 20%, rgba(255,204,0,.1), transparent 45%), #0e100f; }
.cur-head { display: flex; align-items: center; gap: 14px; padding: 12px 18px; border-bottom: 1px solid rgba(255,204,0,.35); }
.cur-title { flex: 1; font-size: 1.05rem; line-height: 1.9; color: #e8e8df; }
.cur-title b { color: #ffcc00; font-size: 1.15rem; margin-left: 6px; }
.cur-prog { padding: 4px 14px; border-radius: 999px; background: #ffcc00; color: #11110f; font-weight: 800; }
.cur-prog:empty { display: none; }
.cur-x { width: 44px; height: 44px; border-radius: 50%; border: 2px solid rgba(255,255,255,.4); background: transparent; color: #fff; font-size: 1.6rem; line-height: 1; cursor: pointer; }
.cur-x:hover { border-color: #ffcc00; color: #ffcc00; }
.cur-bar { height: 8px; background: rgba(255,255,255,.12); }
.cur-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #a8ff18, #ffcc00); transition: width .4s ease; }
.cur-body { flex: 1; overflow-y: auto; display: grid; place-items: center; padding: 20px 16px 40px; position: relative; }
.cur-card { width: min(760px, 100%); display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.cur-msg { font-size: 1.2rem; line-height: 2; color: #cfd3cc; text-align: center; }
.cur-big { font-size: clamp(1.8rem, 5vw, 3rem); font-weight: 900; line-height: 1.6; text-shadow: 0 3px 0 rgba(0,0,0,.4); }
.cur-sub { font-size: 1.05rem; line-height: 1.9; color: #cfd3cc; }
.cur-intro { width: 100%; padding: 18px 22px; text-align: left; font-size: 1.15rem; line-height: 2.1; border: 1px solid rgba(255,204,0,.45); border-radius: 14px; background: rgba(255,255,255,.05); }
.cur-q { font-size: clamp(2rem, 6vw, 3.6rem); font-weight: 900; line-height: 1.7; letter-spacing: .04em; padding: 8px 12px; }
.cur-answer { min-width: 240px; min-height: 76px; padding: 8px 26px; border: 3px solid #ffcc00; border-radius: 14px; background: #1b1d1b; font-size: 3rem; font-weight: 900; font-variant-numeric: tabular-nums; display: inline-flex; align-items: center; justify-content: center; gap: 2px; }
.cur-caret { display: inline-block; width: 3px; height: 2.6rem; background: #ffcc00; animation: curBlink 1s steps(1) infinite; }
@keyframes curBlink { 50% { opacity: 0; } }
.cur-pad { display: grid; grid-template-columns: repeat(3, 84px); gap: 10px; }
.cur-key { height: 66px; border: 0; border-radius: 12px; background: #f4f4ec; color: #11110f; font-size: 1.8rem; font-weight: 900; cursor: pointer; box-shadow: 0 5px 0 #8a8a80; }
.cur-key:active { transform: translateY(4px); box-shadow: 0 1px 0 #8a8a80; }
.cur-input { width: min(520px, 100%); padding: 14px 18px; font-size: 1.8rem; border: 3px solid #ffcc00; border-radius: 0; background: #fff; color: #11110f; text-align: center; }
.cur-choices { width: 100%; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.cur-choice { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border: 3px solid #4c443b; border-radius: 0; background: #fff; color: #11110f; font-size: 1.5rem; font-weight: 800; cursor: pointer; text-align: left; }
.cur-choice i { flex: none; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: #ffcc00; font-style: normal; font-size: 1rem; }
.cur-choice:hover { border-color: #ffcc00; background: #fff8d8; }
.cur-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 4px; }
.cur-btn { padding: 14px 30px; border: 3px solid #f4f4ec; border-radius: 12px; background: transparent; color: #f4f4ec; font: 800 1.2rem "Noto Sans JP", sans-serif; cursor: pointer; }
.cur-btn.primary { background: #ffcc00; border-color: #11110f; color: #11110f; box-shadow: 0 5px 0 #11110f; }
.cur-btn.primary:active { transform: translateY(4px); box-shadow: 0 1px 0 #11110f; }
.cur-btn:hover { filter: brightness(1.1); }
.cur-fb { position: fixed; z-index: 5; left: 0; right: 0; bottom: 0; padding: 18px 20px 26px; display: none; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.cur-fb.show { display: flex; animation: curUp .25s ease-out; }
.cur-fb.ok { background: #23a043; color: #fff; box-shadow: 0 -8px 30px rgba(0,0,0,.5); }
.cur-fb.ng { background: #c0284a; color: #fff; box-shadow: 0 -8px 30px rgba(0,0,0,.5); }
.cur-fb-mark { font-size: 2rem; font-weight: 900; }
.cur-fb-ans { font-size: 1.4rem; }
.cur-fb-ans b { font-size: 1.9rem; color: #ffe27a; }
.cur-fb-exp { max-width: 640px; font-size: 1.05rem; line-height: 1.9; }
@keyframes curUp { from { transform: translateY(30px); opacity: 0; } to { transform: none; opacity: 1; } }
.cur-result .cur-score { font-size: 1.6rem; }
.cur-result .cur-score b { font-size: 3.4rem; color: #ffcc00; }
.cur-pt { padding: 6px 22px; border-radius: 999px; background: #a8ff18; color: #11110f; font-size: 1.4rem; font-weight: 900; animation: curPop .6s cubic-bezier(.2,1.6,.4,1); }
@keyframes curPop { from { transform: scale(.4); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.cur-wrong { width: 100%; padding: 12px 16px; border-radius: 12px; background: rgba(255,255,255,.07); text-align: left; line-height: 1.9; font-size: 1rem; }
.cur-wrong b:first-child { display: block; color: #ffcc00; margin-bottom: 4px; }
@media (max-width: 600px) { .cur-choices { grid-template-columns: 1fr; } .cur-pad { grid-template-columns: repeat(3, 72px); } .cur-key { height: 58px; } }
@media (prefers-reduced-motion: reduce) { .cur-caret, .cur-fb.show, .cur-pt { animation: none; } }

@media (max-height: 720px) {
  .cur-q { font-size: clamp(1.6rem, 5vw, 2.6rem); padding: 0; }
  .cur-answer { min-height: 58px; font-size: 2.2rem; }
  .cur-caret { height: 1.9rem; }
  .cur-pad { grid-template-columns: repeat(3, 70px); gap: 8px; }
  .cur-key { height: 48px; font-size: 1.4rem; }
  .cur-card { gap: 12px; }
}

/* #067: とじる（×）は 最初から目に入るよう 点滅して光らせ、マウスを乗せると「やめる」 */
.cur-x { position: relative; border-color: #ffcc00; color: #ffcc00; animation: curXBlink 1.4s ease-in-out infinite; }
.cur-x:hover, .cur-x:focus-visible { animation: none; background: #ffcc00; color: #11110f; box-shadow: 0 0 22px rgba(255,204,0,.8); outline: none; }
.cur-x::after { content: "やめる"; position: absolute; right: 0; top: calc(100% + 10px); padding: 5px 14px; border-radius: 999px; background: #ffcc00; color: #11110f; font: 800 .95rem/1.5 "Noto Sans JP", sans-serif; white-space: nowrap;
  opacity: 0; transform: translateY(-4px); pointer-events: none; transition: opacity .15s, transform .15s; }
.cur-x:hover::after, .cur-x:focus-visible::after { opacity: 1; transform: none; }
@keyframes curXBlink { 0%, 100% { box-shadow: 0 0 0 0 rgba(255,204,0,.75); } 50% { box-shadow: 0 0 0 12px rgba(255,204,0,0), 0 0 22px 6px rgba(255,204,0,.8); } }
@media (prefers-reduced-motion: reduce) { .cur-x { animation: none; } }