/* ===== 射撃訓練「撃墜」(shoot_drill.js / learn.js FlashRush、2026-10-02) =====
   #screen-flash の上で動く。敵機・星・レーザー・爆発は canvas 1枚(#sd-layer、コックピット枠より奥)、
   撃墜した単語(.sd-pop)・ヒント・「全機撃墜」は #sd-ui(コックピット枠より手前)。
   CSS の url() で resources/ を書かない(アプリで壊れる。画像は JS が API_BASE 付きで読む)。 */

/* 方式の切り替えボタンと「撃墜 n/20」の行(フラッシュ暗記のときもボタンだけ出る) */
.flash-mode-row {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin: 6px auto 0; min-height: 30px; align-self: center; box-sizing: border-box;
  width: calc(100% - 44px); max-width: 480px; /* ヘッダー(.flash-head)の幅に合わせる(タブレットで端に寄らない) */
}
.flash-mode-toggle {
  margin-left: auto; flex-shrink: 0;
  padding: 6px 12px; border-radius: 100px; cursor: pointer;
  background: rgba(0,229,255,0.10); border: 1px solid rgba(0,229,255,0.45);
  color: #bff6ff; font-size: 0.74rem; font-weight: 700; white-space: nowrap;
}
.flash-mode-toggle:active { transform: scale(0.94); }
.sd-counter {
  font-family: 'Orbitron', 'Noto Sans JP', sans-serif; font-weight: 900; font-size: 0.85rem;
  color: #9fefff; white-space: nowrap; text-shadow: 0 0 8px rgba(0,229,255,0.55);
}
.sd-counter b { font-size: 1.15rem; color: #fff; margin-left: 2px; }
.sd-counter.bump b { display: inline-block; animation: cdPop 0.3s cubic-bezier(0.175,0.885,0.32,1.275); }

/* 撃墜の間はフラッシュ暗記の舞台を隠し、タップを canvas に通す */
#screen-flash.sd-on .flash-stage { display: none; }
#screen-flash.sd-on .flash-combo { visibility: hidden; }

.sd-layer { position: absolute; inset: 0; z-index: 1; display: none; }
#screen-flash.sd-on .sd-layer { display: block; }
.sd-bg-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; pointer-events: none; }
.sd-canvas {
  position: relative; display: block; width: 100%; height: 100%;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent; -webkit-user-select: none; user-select: none;
}

.sd-ui { position: absolute; inset: 0; z-index: 3; pointer-events: none; display: none; }
#screen-flash.sd-on .sd-ui { display: block; }

/* 撃墜した単語: 爆発した場所に英語と意味が浮かび上がる(fx_space.css の .lw-pop と同じ見た目。
   ログイン画面の1秒では覚えきれないので約2.2秒。長さは JS が animation-duration で決め、位置は
   left/top で遊ぶ場所の内側に詰める。押せない=タップは下の canvas へ素通り) */
.sd-pop {
  position: absolute; left: 0; top: 0; pointer-events: none; text-align: center; box-sizing: border-box;
  width: max-content; max-width: 80%; /* 右へ寄せても折り返し幅が縮まない(max-width は JS が px で上書き) */
  font-family: 'Orbitron', 'Noto Sans JP', sans-serif; font-weight: 900; color: #fff;
  opacity: 0; transform: translate(-50%, -50%);
  animation: sdPop 2.2s ease-out forwards;
}
.sd-pop-en {
  display: block; font-size: 26px; line-height: 1.15; overflow-wrap: break-word; word-break: break-word;
  text-shadow: 0 0 10px #00e5ff, 0 0 4px #00e5ff, 0 2px 0 #000;
}
.sd-pop-ja {
  display: block; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden;
  margin-top: 3px; font-family: 'Noto Sans JP', sans-serif; font-size: 15px; font-weight: 700; line-height: 1.35;
  color: #ffd700; overflow-wrap: break-word; word-break: break-word;
  text-shadow: 0 0 6px rgba(0,0,0,0.9), 0 1px 0 #000, 0 0 10px rgba(255,170,0,0.45);
}
.sd-pop-etym {
  display: block; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden;
  margin-top: 2px; font-family: 'Noto Sans JP', sans-serif; font-size: 12px; font-weight: 700; line-height: 1.35;
  color: #bfefff; overflow-wrap: break-word; word-break: break-word;
  text-shadow: 0 0 6px rgba(0,0,0,0.9), 0 1px 0 #000;
}
/* 出る(0.25秒で拡大して落ち着く)→ ゆっくり上へ浮かびながら読める濃さを保つ → 最後の2割で消える */
@keyframes sdPop {
  0% { opacity: 0; transform: translate(-50%, -50%) translateY(14px) scale(0.6); }
  7% { opacity: 1; transform: translate(-50%, -50%) translateY(0) scale(1.1); }
  12% { opacity: 1; transform: translate(-50%, -50%) translateY(-4px) scale(1); }
  80% { opacity: 1; transform: translate(-50%, -50%) translateY(-26px) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -50%) translateY(-40px) scale(1); }
}
/* 控えめ: 動かさず、出して消すだけ */
@keyframes sdPopCalm {
  0% { opacity: 0; } 6% { opacity: 1; } 82% { opacity: 1; } 100% { opacity: 0; }
}

/* 始まりのヒント(約2.6秒で消える。タップは素通り) */
.sd-hint {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%);
  padding: 10px 18px; border-radius: 14px; text-align: center; white-space: nowrap;
  background: rgba(0,0,0,0.55); color: #fff; font-weight: 900; font-size: 1.05rem;
  text-shadow: 0 0 10px rgba(0,229,255,0.8); opacity: 0;
}
.sd-hint small { font-size: 0.75rem; font-weight: 700; color: #bff6ff; }
.sd-hint.show { animation: sdHint 2.6s ease forwards; }
@keyframes sdHint { 0% { opacity: 0; } 12% { opacity: 1; } 75% { opacity: 1; } 100% { opacity: 0; } }

/* 全部撃墜したときの一言 */
.sd-finale {
  position: absolute; left: 50%; top: 40%; transform: translate(-50%, -50%);
  font-size: 2.1rem; font-weight: 900; color: #ffd700; white-space: nowrap; opacity: 0;
  text-shadow: 0 0 16px rgba(255,200,0,0.9), 0 3px 0 #000;
}
.sd-finale.show { animation: sdFinale 1.1s cubic-bezier(0.175,0.885,0.32,1.275) forwards; }
@keyframes sdFinale {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  25% { opacity: 1; transform: translate(-50%, -50%) scale(1.12); }
  45% { transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

/* 控えめ(節目の文字の動きOFF): 文字は動かさず出すだけ */
body.learning-fx-reduced .sd-counter.bump b { animation: none; }
body.learning-fx-reduced .sd-pop { animation-name: sdPopCalm; }
body.learning-fx-reduced .sd-finale.show { animation: none; opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .sd-counter.bump b { animation: none; }
  .sd-pop { animation-name: sdPopCalm; }
  .sd-finale.show { animation: none; opacity: 1; }
}